diff --git a/README.md b/README.md
index 07259df..b421538 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 ![alt text](kotlin-algorithm-club.png "Logo Title Text 1")
 
-[![Kotlin](https://img.shields.io/badge/kotlin-1.2.41-blue.svg)](http://kotlinlang.org)
+[![Kotlin](https://img.shields.io/badge/kotlin-1.8.20-blue.svg)](http://kotlinlang.org)
 [![License](https://img.shields.io/github/license/bmaslakov/kotlin-algorithm-club.svg)](LICENSE)
 [![codebeat badge](https://codebeat.co/badges/9a90c6ce-eb29-4cd3-9e92-ed64181784dc)](https://codebeat.co/projects/github-com-bmaslakov-kotlin-algorithm-club-master)
 
diff --git a/build.gradle b/build.gradle
deleted file mode 100644
index 379ab27..0000000
--- a/build.gradle
+++ /dev/null
@@ -1,39 +0,0 @@
-apply plugin: 'idea'
-apply plugin: 'java'
-apply plugin: 'kotlin'
-apply plugin: 'jacoco'
-
-buildscript {
-    ext.kotlin_version = '1.3.21'
-
-    repositories {
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
-jacocoTestReport {
-    reports {
-        xml.enabled true
-        html.enabled false
-    }
-}
-
-test.finalizedBy jacocoTestReport
-
-sourceSets {
-    main.kotlin.srcDirs += 'src/main'
-    test.kotlin.srcDirs += 'src/test'
-}
-
-repositories {
-    mavenCentral()
-}
-
-dependencies {
-    testCompile 'junit:junit:4.12'
-    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-}
diff --git a/build.gradle.kts b/build.gradle.kts
new file mode 100644
index 0000000..af8e9b2
--- /dev/null
+++ b/build.gradle.kts
@@ -0,0 +1,59 @@
+plugins {
+    kotlin("jvm") version "1.8.20"
+    jacoco
+    idea
+    java
+}
+
+repositories {
+    mavenCentral()
+}
+
+
+buildscript {
+
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.8.20")
+    }
+}
+
+kotlin {
+    jvmToolchain(11)
+    sourceSets {
+        main {
+            kotlin.setSrcDirs(listOf("src/main"))
+        }
+        test {
+            kotlin.setSrcDirs(listOf("src/test"))
+        }
+    }
+}
+
+
+
+
+dependencies {
+    implementation(kotlin(("stdlib")))
+    testImplementation(kotlin("test-junit5"))
+    testCompileOnly(kotlin("test"))
+    testCompileOnly(kotlin("test-annotations-common"))
+    testCompileOnly("org.junit.jupiter:junit-jupiter-api:5.9.2")
+    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.9.2")
+}
+
+tasks.jacocoTestReport {
+    dependsOn(tasks.test) // tests are required to run before generating the report
+    reports {
+        xml.required.set(true)
+        html.required.set(false)
+    }
+}
+
+tasks.test {
+    useJUnitPlatform()
+    finalizedBy(tasks.jacocoTestReport) // report is always generated after tests run
+}
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index cc4fdc2..943f0cb 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 9492014..5083229 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-bin.zip
+networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 2fe81a7..65dcd68 100755
--- a/gradlew
+++ b/gradlew
@@ -1,7 +1,7 @@
-#!/usr/bin/env sh
+#!/bin/sh
 
 #
-# Copyright 2015 the original author or authors.
+# Copyright © 2015-2021 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,78 +17,113 @@
 #
 
 ##############################################################################
-##
-##  Gradle start up script for UN*X
-##
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
 ##############################################################################
 
 # Attempt to set APP_HOME
+
 # Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
 done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
 
-APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
+MAX_FD=maximum
 
 warn () {
     echo "$*"
-}
+} >&2
 
 die () {
     echo
     echo "$*"
     echo
     exit 1
-}
+} >&2
 
 # OS specific support (must be 'true' or 'false').
 cygwin=false
 msys=false
 darwin=false
 nonstop=false
-case "`uname`" in
-  CYGWIN* )
-    cygwin=true
-    ;;
-  Darwin* )
-    darwin=true
-    ;;
-  MINGW* )
-    msys=true
-    ;;
-  NONSTOP* )
-    nonstop=true
-    ;;
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
 esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
         # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD="$JAVA_HOME/jre/sh/java"
+        JAVACMD=$JAVA_HOME/jre/sh/java
     else
-        JAVACMD="$JAVA_HOME/bin/java"
+        JAVACMD=$JAVA_HOME/bin/java
     fi
     if [ ! -x "$JAVACMD" ] ; then
         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
@@ -97,7 +132,7 @@ Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
     fi
 else
-    JAVACMD="java"
+    JAVACMD=java
     which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
@@ -105,79 +140,105 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
-    MAX_FD_LIMIT=`ulimit -H -n`
-    if [ $? -eq 0 ] ; then
-        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
-            MAX_FD="$MAX_FD_LIMIT"
-        fi
-        ulimit -n $MAX_FD
-        if [ $? -ne 0 ] ; then
-            warn "Could not set maximum file descriptor limit: $MAX_FD"
-        fi
-    else
-        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
-    fi
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045 
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045 
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
 fi
 
-# For Darwin, add options to specify how the application appears in the dock
-if $darwin; then
-    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
-fi
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
 
 # For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
-    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
-    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-    JAVACMD=`cygpath --unix "$JAVACMD"`
-
-    # We build the pattern for arguments to be converted via cygpath
-    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
-    SEP=""
-    for dir in $ROOTDIRSRAW ; do
-        ROOTDIRS="$ROOTDIRS$SEP$dir"
-        SEP="|"
-    done
-    OURCYGPATTERN="(^($ROOTDIRS))"
-    # Add a user-defined pattern to the cygpath arguments
-    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
-        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
-    fi
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
     # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    i=0
-    for arg in "$@" ; do
-        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
-        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
-
-        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
-            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
-        else
-            eval `echo args$i`="\"$arg\""
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
         fi
-        i=`expr $i + 1`
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
     done
-    case $i in
-        0) set -- ;;
-        1) set -- "$args0" ;;
-        2) set -- "$args0" "$args1" ;;
-        3) set -- "$args0" "$args1" "$args2" ;;
-        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
-    esac
 fi
 
-# Escape application args
-save () {
-    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
-    echo " "
-}
-APP_ARGS=`save "$@"`
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
 
-# Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
 
 exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
index 24467a1..93e3f59 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -1,100 +1,92 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle.kts b/settings.gradle.kts
new file mode 100644
index 0000000..c17515c
--- /dev/null
+++ b/settings.gradle.kts
@@ -0,0 +1,4 @@
+// see https://gradlehero.com/update-to-gradle-8/
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version("0.4.0")
+}
\ No newline at end of file
diff --git a/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt b/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt
index 8cc2a9f..097f037 100644
--- a/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt
+++ b/src/main/io/uuddlrlrba/ktalgs/datastructures/tree/Tree.kt
@@ -30,7 +30,7 @@ class Tree(var value: Int) {
     }
 
     fun height(): Int {
-        return 1 + (children.map { it.size() }.max() ?: 0)
+        return 1 + (children.map { it.size() }.maxOrNull() ?: 0)
     }
 
     fun add(value: Int) {
diff --git a/src/main/io/uuddlrlrba/ktalgs/geometry/Voronoi.kt b/src/main/io/uuddlrlrba/ktalgs/geometry/Voronoi.kt
index 56a3158..14d615e 100644
--- a/src/main/io/uuddlrlrba/ktalgs/geometry/Voronoi.kt
+++ b/src/main/io/uuddlrlrba/ktalgs/geometry/Voronoi.kt
@@ -31,7 +31,7 @@ class Voronoi(private val points: Collection<Point>, private val distanceFunc: (
         get() = points.size
 
     fun region(p: Point): Point {
-        return points.minBy { distanceFunc(p, it) }!!
+        return points.minByOrNull { distanceFunc(p, it) }!!
     }
 
     init {
diff --git a/src/main/io/uuddlrlrba/ktalgs/geometry/convexhull/Quickhull.kt b/src/main/io/uuddlrlrba/ktalgs/geometry/convexhull/Quickhull.kt
index f4332e3..0cf196e 100644
--- a/src/main/io/uuddlrlrba/ktalgs/geometry/convexhull/Quickhull.kt
+++ b/src/main/io/uuddlrlrba/ktalgs/geometry/convexhull/Quickhull.kt
@@ -27,8 +27,8 @@ import io.uuddlrlrba.ktalgs.geometry.Point
 class Quickhull: ConvexHullAlgorithm {
     override fun convexHull(points: Array<Point>): Collection<Point> {
         if (points.size < 3) throw IllegalArgumentException("there must be at least 3 points")
-        val left = points.min()!!
-        val right = points.max()!!
+        val left = points.minOrNull()!!
+        val right = points.maxOrNull()!!
         return quickHull(points.asList(), left, right) + quickHull(points.asList(), right, left)
     }
 
@@ -39,7 +39,7 @@ class Quickhull: ConvexHullAlgorithm {
         if (pointsLeftOfLine.isEmpty()) {
             return listOf(second)
         } else {
-            val max = pointsLeftOfLine.maxBy { it.second }!!.first
+            val max = pointsLeftOfLine.maxByOrNull { it.second }!!.first
             val newPoints = pointsLeftOfLine.map { it.first }
             return quickHull(newPoints, first, max) + quickHull(newPoints, max, second)
         }
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/DequeueTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/DequeueTest.kt
index c716115..15400a9 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/DequeueTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/DequeueTest.kt
@@ -22,22 +22,26 @@
 
 package io.uuddlrlrba.ktalgs.datastructures
 
-import org.junit.Assert
-import org.junit.Test
-import java.util.*
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 class DequeueTest {
     @Test
     fun emptyTest() {
         val dequeue = Dequeue<Int>()
-        Assert.assertEquals(0, dequeue.size)
-        Assert.assertTrue(dequeue.isEmpty())
+        assertEquals(0, dequeue.size)
+        assertTrue(dequeue.isEmpty())
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun exceptionTest() {
-        val dequeue = Dequeue<Int>()
-        dequeue.peekFirst()
+        assertFailsWith<NoSuchElementException> {
+            val dequeue = Dequeue<Int>()
+            dequeue.peekFirst()
+        }
     }
 
     @Test
@@ -47,12 +51,12 @@ class DequeueTest {
             dequeue.add(i)
         }
         for (i in 0..5) {
-            Assert.assertEquals(i, dequeue.peekFirst())
-            Assert.assertEquals(i, dequeue.pollFirst())
+            assertEquals(i, dequeue.peekFirst())
+            assertEquals(i, dequeue.pollFirst())
         }
         for (i in 10..6) {
-            Assert.assertEquals(i, dequeue.peekLast())
-            Assert.assertEquals(i, dequeue.pollLast())
+            assertEquals(i, dequeue.peekLast())
+            assertEquals(i, dequeue.pollLast())
         }
     }
 
@@ -65,7 +69,7 @@ class DequeueTest {
 
         var k = 0
         for (i in dequeue) {
-            Assert.assertEquals(i, k++)
+            assertEquals(i, k++)
         }
     }
 
@@ -77,11 +81,11 @@ class DequeueTest {
         }
 
         for (i in 0..10) {
-            Assert.assertTrue(dequeue.contains(i))
+            assertTrue(dequeue.contains(i))
         }
 
-        Assert.assertFalse(dequeue.contains(100))
-        Assert.assertFalse(dequeue.contains(101))
-        Assert.assertFalse(dequeue.contains(103))
+        assertFalse(dequeue.contains(100))
+        assertFalse(dequeue.contains(101))
+        assertFalse(dequeue.contains(103))
     }
 }
\ No newline at end of file
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/DisjointSetTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/DisjointSetTest.kt
index 7df9a8e..2efafb7 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/DisjointSetTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/DisjointSetTest.kt
@@ -22,38 +22,40 @@
 
 package io.uuddlrlrba.ktalgs.datastructures
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 class DisjointSetTest {
     @Test
     fun sizeTest() {
         val set = DisjointSet(10)
-        Assert.assertEquals(10, set.count)
-        Assert.assertEquals(10, set.size)
+        assertEquals(10, set.count)
+        assertEquals(10, set.size)
         set.union(0, 1)
-        Assert.assertEquals(9, set.count)
-        Assert.assertEquals(10, set.size)
+        assertEquals(9, set.count)
+        assertEquals(10, set.size)
         set.union(0, 2)
-        Assert.assertEquals(8, set.count)
-        Assert.assertEquals(10, set.size)
+        assertEquals(8, set.count)
+        assertEquals(10, set.size)
     }
 
     @Test
     fun naiveTest() {
         val set = DisjointSet(10)
         for (i in 1..set.size-1) {
-            Assert.assertFalse(set.connected(i, i - 1))
+            assertFalse(set.connected(i, i - 1))
         }
         set.union(1, 2)
-        Assert.assertTrue(set.connected(1, 2))
+        assertTrue(set.connected(1, 2))
         set.union(1, 3)
-        Assert.assertTrue(set.connected(1, 3))
-        Assert.assertTrue(set.connected(2, 3))
+        assertTrue(set.connected(1, 3))
+        assertTrue(set.connected(2, 3))
         set.union(3, 4)
-        Assert.assertTrue(set.connected(2, 4))
-        Assert.assertFalse(set.connected(0, 1))
-        Assert.assertFalse(set.connected(0, 5))
-        Assert.assertFalse(set.connected(4, 5))
+        assertTrue(set.connected(2, 4))
+        assertFalse(set.connected(0, 1))
+        assertFalse(set.connected(0, 5))
+        assertFalse(set.connected(4, 5))
     }
 }
\ No newline at end of file
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/ImmutableSetTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/ImmutableSetTest.kt
index ae2b538..eeba19c 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/ImmutableSetTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/ImmutableSetTest.kt
@@ -22,42 +22,44 @@
 
 package io.uuddlrlrba.ktalgs.datastructures
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 class ImmutableSetTest {
     @Test
     fun test1() {
-        Assert.assertFalse(immutableSetOf(3).contains(1))
-        Assert.assertFalse(immutableSetOf(3).contains(2))
-        Assert.assertFalse(immutableSetOf(3).contains(4))
-        Assert.assertFalse(immutableSetOf(3).contains(5))
-        Assert.assertTrue(immutableSetOf(3).contains(3))
+        assertFalse(immutableSetOf(3).contains(1))
+        assertFalse(immutableSetOf(3).contains(2))
+        assertFalse(immutableSetOf(3).contains(4))
+        assertFalse(immutableSetOf(3).contains(5))
+        assertTrue(immutableSetOf(3).contains(3))
     }
 
     @Test
     fun test2() {
         val set = immutableSetOf(*(10 downTo 1).toList().toTypedArray())
         for (v in set) {
-            Assert.assertTrue(set.contains(v))
+            assertTrue(set.contains(v))
         }
-        Assert.assertEquals(10, set.size)
-        Assert.assertFalse(set.isEmpty())
-        Assert.assertFalse(set.contains(42))
-        Assert.assertFalse(set.contains(-42))
+        assertEquals(10, set.size)
+        assertFalse(set.isEmpty())
+        assertFalse(set.contains(42))
+        assertFalse(set.contains(-42))
     }
 
     @Test
     fun test3() {
         val set = immutableSetOf(*(0..100).toList().toTypedArray())
         for (v in -100..-1) {
-            Assert.assertFalse(set.contains(v))
+            assertFalse(set.contains(v))
         }
         for (v in 0..100) {
-            Assert.assertTrue(set.contains(v))
+            assertTrue(set.contains(v))
         }
         for (v in 101..200) {
-            Assert.assertFalse(set.contains(v))
+            assertFalse(set.contains(v))
         }
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/IndexedPriorityQueueTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/IndexedPriorityQueueTest.kt
index 3d69d58..ede4266 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/IndexedPriorityQueueTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/IndexedPriorityQueueTest.kt
@@ -22,22 +22,25 @@
 
 package io.uuddlrlrba.ktalgs.datastructures
 
-import org.junit.Assert
-import org.junit.Test
-import java.util.NoSuchElementException
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertTrue
 
 class IndexedPriorityQueueTest {
     @Test
     fun emptyTest() {
         val pq = IndexedPriorityQueue<Int>(3)
-        Assert.assertEquals(0, pq.size)
-        Assert.assertTrue(pq.isEmpty())
+        assertEquals(0, pq.size)
+        assertTrue(pq.isEmpty())
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun exceptionTest() {
-        val pq = IndexedPriorityQueue<Int>(3)
-        pq.peek()
+        assertFailsWith<NoSuchElementException> {
+            val pq = IndexedPriorityQueue<Int>(3)
+            pq.peek()
+        }
     }
 
     @Test
@@ -45,10 +48,10 @@ class IndexedPriorityQueueTest {
         val pq = IndexedPriorityQueue<Int>(20)
         for (i in 10 downTo 1) {
             pq.insert(20 - i, i)
-            Assert.assertEquals(Pair(20 - i, i), pq.peek())
+            assertEquals(Pair(20 - i, i), pq.peek())
         }
         for (i in 1..10) {
-            Assert.assertEquals(Pair(20 - i, i), pq.poll())
+            assertEquals(Pair(20 - i, i), pq.poll())
         }
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/PriorityQueueTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/PriorityQueueTest.kt
index 772fb67..1c7d473 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/PriorityQueueTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/PriorityQueueTest.kt
@@ -22,22 +22,25 @@
 
 package io.uuddlrlrba.ktalgs.datastructures
 
-import org.junit.Assert
-import org.junit.Test
-import java.util.NoSuchElementException
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertTrue
 
 class PriorityQueueTest {
     @Test
     fun emptyTest() {
         val pq = PriorityQueue<Int>(3)
-        Assert.assertEquals(0, pq.size)
-        Assert.assertTrue(pq.isEmpty())
+        assertEquals(0, pq.size)
+        assertTrue(pq.isEmpty())
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun exceptionTest() {
-        val pq = PriorityQueue<Int>(3)
-        pq.peek()
+        assertFailsWith<NoSuchElementException> {
+            val pq = PriorityQueue<Int>(3)
+            pq.peek()
+        }
     }
 
     @Test
@@ -45,10 +48,10 @@ class PriorityQueueTest {
         val pq = PriorityQueue<Int>(3)
         for (i in 10 downTo 1) {
             pq.add(i)
-            Assert.assertEquals(i, pq.peek())
+            assertEquals(i, pq.peek())
         }
         for (i in 1..10) {
-            Assert.assertEquals(i, pq.poll())
+            assertEquals(i, pq.poll())
         }
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/QueueTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/QueueTest.kt
index 7bd33a9..7f404f1 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/QueueTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/QueueTest.kt
@@ -22,22 +22,26 @@
 
 package io.uuddlrlrba.ktalgs.datastructures
 
-import org.junit.Assert
-import org.junit.Test
-import java.util.*
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 class QueueTest {
     @Test
     fun emptyTest() {
         val queue = Queue<Int>()
-        Assert.assertEquals(0, queue.size)
-        Assert.assertTrue(queue.isEmpty())
+        assertEquals(0, queue.size)
+        assertTrue(queue.isEmpty())
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun exceptionTest() {
-        val queue = Queue<Int>()
-        queue.peek()
+        assertFailsWith<NoSuchElementException> {
+            val queue = Queue<Int>()
+            queue.peek()
+        }
     }
 
     @Test
@@ -47,10 +51,10 @@ class QueueTest {
             queue.add(i)
         }
         for (i in 0..10) {
-            Assert.assertEquals(i, queue.peek())
-            Assert.assertEquals(i, queue.poll())
+            assertEquals(i, queue.peek())
+            assertEquals(i, queue.poll())
         }
-        Assert.assertEquals(0, queue.size)
+        assertEquals(0, queue.size)
     }
 
     @Test
@@ -62,7 +66,7 @@ class QueueTest {
 
         var k = 0
         for (i in queue) {
-            Assert.assertEquals(i, k++)
+            assertEquals(i, k++)
         }
     }
 
@@ -74,11 +78,11 @@ class QueueTest {
         }
 
         for (i in 0..10) {
-            Assert.assertTrue(queue.contains(i))
+            assertTrue(queue.contains(i))
         }
 
-        Assert.assertFalse(queue.contains(100))
-        Assert.assertFalse(queue.contains(101))
-        Assert.assertFalse(queue.contains(103))
+        assertFalse(queue.contains(100))
+        assertFalse(queue.contains(101))
+        assertFalse(queue.contains(103))
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/StackTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/StackTest.kt
index 80c0654..8c038ed 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/StackTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/StackTest.kt
@@ -22,22 +22,26 @@
 
 package io.uuddlrlrba.ktalgs.datastructures
 
-import org.junit.Assert
-import org.junit.Test
-import java.util.*
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 class StackTest {
     @Test
     fun emptyTest() {
         val stack = Stack<Int>()
-        Assert.assertEquals(0, stack.size)
-        Assert.assertTrue(stack.isEmpty())
+        assertEquals(0, stack.size)
+        assertTrue(stack.isEmpty())
     }
 
-    @Test(expected=NoSuchElementException::class)
+    @Test
     fun exceptionTest() {
-        val stack = Stack<Int>()
-        stack.peek()
+        assertFailsWith<NoSuchElementException> {
+            val stack = Stack<Int>()
+            stack.peek()
+        }
     }
 
     @Test
@@ -47,10 +51,10 @@ class StackTest {
             stack.push(i)
         }
         for (i in 10 downTo 0) {
-            Assert.assertEquals(i, stack.peek())
-            Assert.assertEquals(i, stack.poll())
+            assertEquals(i, stack.peek())
+            assertEquals(i, stack.poll())
         }
-        Assert.assertEquals(0, stack.size)
+        assertEquals(0, stack.size)
     }
 
     @Test
@@ -62,7 +66,7 @@ class StackTest {
 
         var k = 10
         for (i in stack) {
-            Assert.assertEquals(i, k--)
+            assertEquals(i, k--)
         }
     }
 
@@ -74,11 +78,11 @@ class StackTest {
         }
 
         for (i in 0..10) {
-            Assert.assertTrue(stack.contains(i))
+            assertTrue(stack.contains(i))
         }
 
-        Assert.assertFalse(stack.contains(100))
-        Assert.assertFalse(stack.contains(101))
-        Assert.assertFalse(stack.contains(103))
+        assertFalse(stack.contains(100))
+        assertFalse(stack.contains(101))
+        assertFalse(stack.contains(103))
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/datastructures/tree/BinarySearchTreeTest.kt b/src/test/io/uuddlrlrba/ktalgs/datastructures/tree/BinarySearchTreeTest.kt
index cfb3785..0d57920 100644
--- a/src/test/io/uuddlrlrba/ktalgs/datastructures/tree/BinarySearchTreeTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/datastructures/tree/BinarySearchTreeTest.kt
@@ -22,29 +22,33 @@
 
 package io.uuddlrlrba.ktalgs.datastructures.tree
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 class BinarySearchTreeTest {
     @Test
     fun empty() {
         val tree = BinarySearchTree<Int, Int>()
-        Assert.assertEquals(0, tree.size)
-        Assert.assertTrue(tree.isEmpty())
+        assertEquals(0, tree.size)
+        assertTrue(tree.isEmpty())
     }
 
     @Test
     fun sizeOfOne() {
         val tree = BinarySearchTree<Int, String>()
         tree.add(1, "1")
-        Assert.assertFalse(tree.isEmpty())
-        Assert.assertEquals(1, tree.size)
-        Assert.assertEquals(1, tree.height())
-        Assert.assertEquals(1, tree.min())
-        Assert.assertEquals(1, tree.max())
-        Assert.assertEquals("1", tree[1])
+        assertFalse(tree.isEmpty())
+        assertEquals(1, tree.size)
+        assertEquals(1, tree.height())
+        assertEquals(1, tree.min())
+        assertEquals(1, tree.max())
+        assertEquals("1", tree[1])
         tree.pollMin()
-        Assert.assertTrue(tree.isEmpty())
+        assertTrue(tree.isEmpty())
     }
 
     @Test
@@ -53,124 +57,128 @@ class BinarySearchTreeTest {
         tree.add(1, "1")
         tree.add(2, "2")
         tree.add(3, "3")
-        Assert.assertFalse(tree.isEmpty())
-        Assert.assertEquals(3, tree.size)
-        Assert.assertEquals(3, tree.height())
-        Assert.assertEquals(1, tree.min())
-        Assert.assertEquals(3, tree.max())
-        Assert.assertEquals("1", tree[1])
-        Assert.assertEquals("2", tree[2])
-        Assert.assertEquals("3", tree[3])
+        assertFalse(tree.isEmpty())
+        assertEquals(3, tree.size)
+        assertEquals(3, tree.height())
+        assertEquals(1, tree.min())
+        assertEquals(3, tree.max())
+        assertEquals("1", tree[1])
+        assertEquals("2", tree[2])
+        assertEquals("3", tree[3])
         tree.pollMin()
-        Assert.assertEquals(2, tree.min())
-        Assert.assertEquals(3, tree.max())
-        Assert.assertEquals("2", tree[2])
-        Assert.assertEquals("3", tree[3])
+        assertEquals(2, tree.min())
+        assertEquals(3, tree.max())
+        assertEquals("2", tree[2])
+        assertEquals("3", tree[3])
         tree.pollMax()
-        Assert.assertEquals(2, tree.min())
-        Assert.assertEquals(2, tree.max())
-        Assert.assertEquals("2", tree[2])
+        assertEquals(2, tree.min())
+        assertEquals(2, tree.max())
+        assertEquals("2", tree[2])
     }
 
     @Test
     fun overwrite() {
         val tree = BinarySearchTree<Int, String>()
         tree.add(1, "1")
-        Assert.assertFalse(tree.isEmpty())
-        Assert.assertEquals(1, tree.size)
-        Assert.assertEquals(1, tree.height())
-        Assert.assertEquals("1", tree[1])
+        assertFalse(tree.isEmpty())
+        assertEquals(1, tree.size)
+        assertEquals(1, tree.height())
+        assertEquals("1", tree[1])
         tree.add(1, "2")
-        Assert.assertFalse(tree.isEmpty())
-        Assert.assertEquals(1, tree.size)
-        Assert.assertEquals(1, tree.height())
-        Assert.assertEquals(1, tree.min())
-        Assert.assertEquals(1, tree.max())
-        Assert.assertEquals("2", tree[1])
+        assertFalse(tree.isEmpty())
+        assertEquals(1, tree.size)
+        assertEquals(1, tree.height())
+        assertEquals(1, tree.min())
+        assertEquals(1, tree.max())
+        assertEquals("2", tree[1])
         tree.pollMin()
-        Assert.assertTrue(tree.isEmpty())
+        assertTrue(tree.isEmpty())
     }
 
     @Test
     fun letters() {
         val tree = BinarySearchTree<Char, String>()
-        val letters = arrayOf('j', 'p', 'q', 's', 'f', 'o', 'g', 'v', 'h', 'm', 'x', 'z',
-                'l', 'n', 'd', 'c', 'a', 'r', 'b', 't', 'i', 'u', 'w', 'k', 'y', 'e')
+        val letters = arrayOf(
+            'j', 'p', 'q', 's', 'f', 'o', 'g', 'v', 'h', 'm', 'x', 'z',
+            'l', 'n', 'd', 'c', 'a', 'r', 'b', 't', 'i', 'u', 'w', 'k', 'y', 'e'
+        )
         letters.forEach { tree.add(it, it.toString()) }
 
-        Assert.assertEquals(letters.toSet(), tree.keys)
-        Assert.assertArrayEquals(letters.map { it.toString() }.sorted().toTypedArray(),
-                tree.values.sorted().toTypedArray())
+        assertEquals(letters.toSet(), tree.keys)
+        assertContentEquals(
+            letters.map { it.toString() }.sorted().toTypedArray(),
+            tree.values.sorted().toTypedArray()
+        )
 
-        Assert.assertEquals(26, tree.size)
-        Assert.assertEquals('a', tree.min())
-        Assert.assertEquals('z', tree.max())
+        assertEquals(26, tree.size)
+        assertEquals('a', tree.min())
+        assertEquals('z', tree.max())
         tree.pollMin()
-        Assert.assertEquals(25, tree.size)
-        Assert.assertEquals('b', tree.min())
-        Assert.assertEquals('z', tree.max())
+        assertEquals(25, tree.size)
+        assertEquals('b', tree.min())
+        assertEquals('z', tree.max())
         tree.pollMax()
-        Assert.assertEquals(24, tree.size)
-        Assert.assertEquals('b', tree.min())
-        Assert.assertEquals('y', tree.max())
+        assertEquals(24, tree.size)
+        assertEquals('b', tree.min())
+        assertEquals('y', tree.max())
         tree.pollMin()
-        Assert.assertEquals(23, tree.size)
-        Assert.assertEquals('c', tree.min())
-        Assert.assertEquals('y', tree.max())
+        assertEquals(23, tree.size)
+        assertEquals('c', tree.min())
+        assertEquals('y', tree.max())
         tree.pollMax()
-        Assert.assertEquals(22, tree.size)
-        Assert.assertEquals('c', tree.min())
-        Assert.assertEquals('x', tree.max())
+        assertEquals(22, tree.size)
+        assertEquals('c', tree.min())
+        assertEquals('x', tree.max())
         tree.pollMin()
-        Assert.assertEquals(21, tree.size)
-        Assert.assertEquals('d', tree.min())
-        Assert.assertEquals('x', tree.max())
+        assertEquals(21, tree.size)
+        assertEquals('d', tree.min())
+        assertEquals('x', tree.max())
         tree.pollMax()
-        Assert.assertEquals(20, tree.size)
-        Assert.assertEquals('d', tree.min())
-        Assert.assertEquals('w', tree.max())
+        assertEquals(20, tree.size)
+        assertEquals('d', tree.min())
+        assertEquals('w', tree.max())
         tree.pollMin()
         tree.pollMin()
         tree.pollMin()
-        Assert.assertEquals(17, tree.size)
-        Assert.assertEquals('g', tree.min())
-        Assert.assertEquals('w', tree.max())
+        assertEquals(17, tree.size)
+        assertEquals('g', tree.min())
+        assertEquals('w', tree.max())
         tree.pollMax()
         tree.pollMax()
         tree.pollMax()
-        Assert.assertEquals(14, tree.size)
-        Assert.assertEquals('g', tree.min())
-        Assert.assertEquals('t', tree.max())
+        assertEquals(14, tree.size)
+        assertEquals('g', tree.min())
+        assertEquals('t', tree.max())
         tree.pollMin()
         tree.pollMin()
         tree.pollMin()
         tree.pollMin()
         tree.pollMin()
-        Assert.assertEquals(9, tree.size)
-        Assert.assertEquals('l', tree.min())
-        Assert.assertEquals('t', tree.max())
+        assertEquals(9, tree.size)
+        assertEquals('l', tree.min())
+        assertEquals('t', tree.max())
         tree.pollMax()
         tree.pollMax()
         tree.pollMax()
         tree.pollMax()
         tree.pollMax()
-        Assert.assertEquals(4, tree.size)
-        Assert.assertEquals('l', tree.min())
-        Assert.assertEquals('o', tree.max())
+        assertEquals(4, tree.size)
+        assertEquals('l', tree.min())
+        assertEquals('o', tree.max())
         tree.pollMin()
-        Assert.assertEquals(3, tree.size)
-        Assert.assertEquals('m', tree.min())
-        Assert.assertEquals('o', tree.max())
+        assertEquals(3, tree.size)
+        assertEquals('m', tree.min())
+        assertEquals('o', tree.max())
         tree.pollMax()
-        Assert.assertEquals(2, tree.size)
-        Assert.assertEquals('m', tree.min())
-        Assert.assertEquals('n', tree.max())
+        assertEquals(2, tree.size)
+        assertEquals('m', tree.min())
+        assertEquals('n', tree.max())
         tree.pollMin()
-        Assert.assertEquals(1, tree.size)
-        Assert.assertEquals('n', tree.min())
-        Assert.assertEquals('n', tree.max())
+        assertEquals(1, tree.size)
+        assertEquals('n', tree.min())
+        assertEquals('n', tree.max())
         tree.pollMin()
-        Assert.assertTrue(tree.isEmpty())
+        assertTrue(tree.isEmpty())
     }
 
     @Test
@@ -181,78 +189,78 @@ class BinarySearchTreeTest {
         }
 
         for (i in 0..30) {
-            Assert.assertEquals((i * i).toString(), tree[i])
+            assertEquals((i * i).toString(), tree[i])
         }
 
         var counter = 0
         for ((key, value) in tree) {
-            Assert.assertEquals(counter, key)
-            Assert.assertEquals((counter * counter).toString(), value)
+            assertEquals(counter, key)
+            assertEquals((counter * counter).toString(), value)
             counter++
         }
 
         tree.remove(15)
         tree.remove(0)
         tree.remove(30)
-        Assert.assertEquals(1, tree.min())
-        Assert.assertEquals(29, tree.max())
+        assertEquals(1, tree.min())
+        assertEquals(29, tree.max())
         tree.remove(14)
         tree.remove(16)
         tree.remove(1)
         tree.remove(29)
-        Assert.assertEquals(2, tree.min())
-        Assert.assertEquals(28, tree.max())
+        assertEquals(2, tree.min())
+        assertEquals(28, tree.max())
         tree.remove(13)
         tree.remove(17)
         tree.remove(2)
         tree.remove(28)
-        Assert.assertEquals(3, tree.min())
-        Assert.assertEquals(27, tree.max())
+        assertEquals(3, tree.min())
+        assertEquals(27, tree.max())
         tree.remove(12)
         tree.remove(18)
         tree.remove(3)
         tree.remove(27)
-        Assert.assertEquals(4, tree.min())
-        Assert.assertEquals(26, tree.max())
+        assertEquals(4, tree.min())
+        assertEquals(26, tree.max())
         tree.remove(11)
         tree.remove(19)
         tree.remove(4)
         tree.remove(26)
-        Assert.assertEquals(5, tree.min())
-        Assert.assertEquals(25, tree.max())
-        Assert.assertEquals(12, tree.size)
+        assertEquals(5, tree.min())
+        assertEquals(25, tree.max())
+        assertEquals(12, tree.size)
 
-        Assert.assertEquals("25", tree[5])
-        Assert.assertEquals("36", tree[6])
-        Assert.assertEquals("49", tree[7])
-        Assert.assertEquals("64", tree[8])
-        Assert.assertEquals("81", tree[9])
-        Assert.assertEquals("100", tree[10])
-        Assert.assertEquals("400", tree[20])
-        Assert.assertEquals("441", tree[21])
-        Assert.assertEquals("484", tree[22])
-        Assert.assertEquals("529", tree[23])
-        Assert.assertEquals("576", tree[24])
-        Assert.assertEquals("625", tree[25])
+        assertEquals("25", tree[5])
+        assertEquals("36", tree[6])
+        assertEquals("49", tree[7])
+        assertEquals("64", tree[8])
+        assertEquals("81", tree[9])
+        assertEquals("100", tree[10])
+        assertEquals("400", tree[20])
+        assertEquals("441", tree[21])
+        assertEquals("484", tree[22])
+        assertEquals("529", tree[23])
+        assertEquals("576", tree[24])
+        assertEquals("625", tree[25])
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun emptyMinFails() {
-        BinarySearchTree<Int, Unit>().min()
+        assertFailsWith<NoSuchElementException> { BinarySearchTree<Int, Unit>().min() }
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun emptyMaxFails() {
-        BinarySearchTree<Int, Unit>().max()
+        assertFailsWith<NoSuchElementException> { BinarySearchTree<Int, Unit>().max() }
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun emptyPollMinFails() {
-        BinarySearchTree<Int, Unit>().pollMin()
+        assertFailsWith<NoSuchElementException> { BinarySearchTree<Int, Unit>().pollMin() }
     }
 
-    @Test(expected= NoSuchElementException::class)
+    @Test
     fun emptyPollMaxFails() {
-        BinarySearchTree<Int, Unit>().pollMax()
+        assertFailsWith<NoSuchElementException> { BinarySearchTree<Int, Unit>().pollMax() }
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/geometry/QuadTreeTest.kt b/src/test/io/uuddlrlrba/ktalgs/geometry/QuadTreeTest.kt
index 27d8249..0a88476 100644
--- a/src/test/io/uuddlrlrba/ktalgs/geometry/QuadTreeTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/geometry/QuadTreeTest.kt
@@ -22,8 +22,8 @@
 
 package io.uuddlrlrba.ktalgs.geometry
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertEquals
 
 class QuadTreeTest {
     @Test
@@ -37,15 +37,15 @@ class QuadTreeTest {
         )
 
         val points1 = qt[Rect(4, 0, 51, 98)].sorted()
-        Assert.assertEquals(listOf("Bar", "Baz", "Bing", "Bong", "Foo"), points1)
+        assertEquals(listOf("Bar", "Baz", "Bing", "Bong", "Foo"), points1)
 
         val points2 = qt[Rect(5, 0, 50, 96)].sorted()
-        Assert.assertEquals(listOf("Bar", "Baz", "Bing", "Bong", "Foo"), points2)
+        assertEquals(listOf("Bar", "Baz", "Bing", "Bong", "Foo"), points2)
 
         val points3 = qt[Rect(55, 0, 50, 96)]
-        Assert.assertEquals(0, points3.count())
+        assertEquals(0, points3.count())
 
         val points4 = qt[Rect(4, 19, 6, 21)].sorted()
-        Assert.assertEquals(listOf("Foo"), points4)
+        assertEquals(listOf("Foo"), points4)
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/geometry/VoronoiTest.kt b/src/test/io/uuddlrlrba/ktalgs/geometry/VoronoiTest.kt
index c1e3d42..be0c4b2 100644
--- a/src/test/io/uuddlrlrba/ktalgs/geometry/VoronoiTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/geometry/VoronoiTest.kt
@@ -22,947 +22,948 @@
 
 package io.uuddlrlrba.ktalgs.geometry
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
 
 class VoronoiTest {
-    @Test(expected= IllegalArgumentException::class)
+    @Test
     fun testException() {
-        Voronoi(emptyList(), Point.EUCLIDEAN_DISTANCE_FUNC)
+        assertFailsWith<IllegalArgumentException> { Voronoi(emptyList(), Point.EUCLIDEAN_DISTANCE_FUNC) }
     }
 
     @Test
     fun test1() {
         val v = Voronoi(listOf(Point(0, 0)), Point.EUCLIDEAN_DISTANCE_FUNC)
-        Assert.assertEquals(1, v.count)
-        Assert.assertEquals(Point(0, 0), v.region(Point(-100, -100)))
-        Assert.assertEquals(Point(0, 0), v.region(Point(-100, 100)))
-        Assert.assertEquals(Point(0, 0), v.region(Point(100, 100)))
-        Assert.assertEquals(Point(0, 0), v.region(Point(100, -100)))
+        assertEquals(1, v.count)
+        assertEquals(Point(0, 0), v.region(Point(-100, -100)))
+        assertEquals(Point(0, 0), v.region(Point(-100, 100)))
+        assertEquals(Point(0, 0), v.region(Point(100, 100)))
+        assertEquals(Point(0, 0), v.region(Point(100, -100)))
     }
 
     @Test
     fun test2() {
         val v = Voronoi(
-                listOf(
-                        Point(41, 98),
-                        Point(59, 97),
-                        Point(87, 26),
-                        Point(3, 33),
-                        Point(18, 46),
-                        Point(57, 81),
-                        Point(65, 29),
-                        Point(20, 32),
-                        Point(73, 96),
-                        Point(81, 90)
-                ), Point.EUCLIDEAN_DISTANCE_FUNC
+            listOf(
+                Point(41, 98),
+                Point(59, 97),
+                Point(87, 26),
+                Point(3, 33),
+                Point(18, 46),
+                Point(57, 81),
+                Point(65, 29),
+                Point(20, 32),
+                Point(73, 96),
+                Point(81, 90)
+            ), Point.EUCLIDEAN_DISTANCE_FUNC
         )
-        Assert.assertEquals(10, v.count)
-        Assert.assertEquals(Point(3, 33), v.region(Point(0, 0)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(0, 10)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(0, 20)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(0, 30)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(0, 40)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(0, 50)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(0, 60)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(0, 70)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(0, 80)))
-        Assert.assertEquals(Point(41, 98), v.region(Point(0, 90)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(10, 0)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(10, 10)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(10, 20)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(10, 30)))
-        Assert.assertEquals(Point(3, 33), v.region(Point(10, 40)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(10, 50)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(10, 60)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(10, 70)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(10, 80)))
-        Assert.assertEquals(Point(41, 98), v.region(Point(10, 90)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(20, 0)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(20, 10)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(20, 20)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(20, 30)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(20, 40)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(20, 50)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(20, 60)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(20, 70)))
-        Assert.assertEquals(Point(41, 98), v.region(Point(20, 80)))
-        Assert.assertEquals(Point(41, 98), v.region(Point(20, 90)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(30, 0)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(30, 10)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(30, 20)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(30, 30)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(30, 40)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(30, 50)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(30, 60)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(30, 70)))
-        Assert.assertEquals(Point(41, 98), v.region(Point(30, 80)))
-        Assert.assertEquals(Point(41, 98), v.region(Point(30, 90)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(40, 0)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(40, 10)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(40, 20)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(40, 30)))
-        Assert.assertEquals(Point(20, 32), v.region(Point(40, 40)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(40, 50)))
-        Assert.assertEquals(Point(18, 46), v.region(Point(40, 60)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(40, 70)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(40, 80)))
-        Assert.assertEquals(Point(41, 98), v.region(Point(40, 90)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(50, 0)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(50, 10)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(50, 20)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(50, 30)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(50, 40)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(50, 50)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(50, 60)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(50, 70)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(50, 80)))
-        Assert.assertEquals(Point(59, 97), v.region(Point(50, 90)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(60, 0)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(60, 10)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(60, 20)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(60, 30)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(60, 40)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(60, 50)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(60, 60)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(60, 70)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(60, 80)))
-        Assert.assertEquals(Point(59, 97), v.region(Point(60, 90)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(70, 0)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(70, 10)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(70, 20)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(70, 30)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(70, 40)))
-        Assert.assertEquals(Point(65, 29), v.region(Point(70, 50)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(70, 60)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(70, 70)))
-        Assert.assertEquals(Point(57, 81), v.region(Point(70, 80)))
-        Assert.assertEquals(Point(73, 96), v.region(Point(70, 90)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(80, 0)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(80, 10)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(80, 20)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(80, 30)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(80, 40)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(80, 50)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(80, 60)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(80, 70)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(80, 80)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(80, 90)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(90, 0)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(90, 10)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(90, 20)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(90, 30)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(90, 40)))
-        Assert.assertEquals(Point(87, 26), v.region(Point(90, 50)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(90, 60)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(90, 70)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(90, 80)))
-        Assert.assertEquals(Point(81, 90), v.region(Point(90, 90)))
+        assertEquals(10, v.count)
+        assertEquals(Point(3, 33), v.region(Point(0, 0)))
+        assertEquals(Point(3, 33), v.region(Point(0, 10)))
+        assertEquals(Point(3, 33), v.region(Point(0, 20)))
+        assertEquals(Point(3, 33), v.region(Point(0, 30)))
+        assertEquals(Point(3, 33), v.region(Point(0, 40)))
+        assertEquals(Point(3, 33), v.region(Point(0, 50)))
+        assertEquals(Point(18, 46), v.region(Point(0, 60)))
+        assertEquals(Point(18, 46), v.region(Point(0, 70)))
+        assertEquals(Point(18, 46), v.region(Point(0, 80)))
+        assertEquals(Point(41, 98), v.region(Point(0, 90)))
+        assertEquals(Point(20, 32), v.region(Point(10, 0)))
+        assertEquals(Point(3, 33), v.region(Point(10, 10)))
+        assertEquals(Point(3, 33), v.region(Point(10, 20)))
+        assertEquals(Point(3, 33), v.region(Point(10, 30)))
+        assertEquals(Point(3, 33), v.region(Point(10, 40)))
+        assertEquals(Point(18, 46), v.region(Point(10, 50)))
+        assertEquals(Point(18, 46), v.region(Point(10, 60)))
+        assertEquals(Point(18, 46), v.region(Point(10, 70)))
+        assertEquals(Point(18, 46), v.region(Point(10, 80)))
+        assertEquals(Point(41, 98), v.region(Point(10, 90)))
+        assertEquals(Point(20, 32), v.region(Point(20, 0)))
+        assertEquals(Point(20, 32), v.region(Point(20, 10)))
+        assertEquals(Point(20, 32), v.region(Point(20, 20)))
+        assertEquals(Point(20, 32), v.region(Point(20, 30)))
+        assertEquals(Point(18, 46), v.region(Point(20, 40)))
+        assertEquals(Point(18, 46), v.region(Point(20, 50)))
+        assertEquals(Point(18, 46), v.region(Point(20, 60)))
+        assertEquals(Point(18, 46), v.region(Point(20, 70)))
+        assertEquals(Point(41, 98), v.region(Point(20, 80)))
+        assertEquals(Point(41, 98), v.region(Point(20, 90)))
+        assertEquals(Point(20, 32), v.region(Point(30, 0)))
+        assertEquals(Point(20, 32), v.region(Point(30, 10)))
+        assertEquals(Point(20, 32), v.region(Point(30, 20)))
+        assertEquals(Point(20, 32), v.region(Point(30, 30)))
+        assertEquals(Point(20, 32), v.region(Point(30, 40)))
+        assertEquals(Point(18, 46), v.region(Point(30, 50)))
+        assertEquals(Point(18, 46), v.region(Point(30, 60)))
+        assertEquals(Point(18, 46), v.region(Point(30, 70)))
+        assertEquals(Point(41, 98), v.region(Point(30, 80)))
+        assertEquals(Point(41, 98), v.region(Point(30, 90)))
+        assertEquals(Point(20, 32), v.region(Point(40, 0)))
+        assertEquals(Point(20, 32), v.region(Point(40, 10)))
+        assertEquals(Point(20, 32), v.region(Point(40, 20)))
+        assertEquals(Point(20, 32), v.region(Point(40, 30)))
+        assertEquals(Point(20, 32), v.region(Point(40, 40)))
+        assertEquals(Point(18, 46), v.region(Point(40, 50)))
+        assertEquals(Point(18, 46), v.region(Point(40, 60)))
+        assertEquals(Point(57, 81), v.region(Point(40, 70)))
+        assertEquals(Point(57, 81), v.region(Point(40, 80)))
+        assertEquals(Point(41, 98), v.region(Point(40, 90)))
+        assertEquals(Point(65, 29), v.region(Point(50, 0)))
+        assertEquals(Point(65, 29), v.region(Point(50, 10)))
+        assertEquals(Point(65, 29), v.region(Point(50, 20)))
+        assertEquals(Point(65, 29), v.region(Point(50, 30)))
+        assertEquals(Point(65, 29), v.region(Point(50, 40)))
+        assertEquals(Point(65, 29), v.region(Point(50, 50)))
+        assertEquals(Point(57, 81), v.region(Point(50, 60)))
+        assertEquals(Point(57, 81), v.region(Point(50, 70)))
+        assertEquals(Point(57, 81), v.region(Point(50, 80)))
+        assertEquals(Point(59, 97), v.region(Point(50, 90)))
+        assertEquals(Point(65, 29), v.region(Point(60, 0)))
+        assertEquals(Point(65, 29), v.region(Point(60, 10)))
+        assertEquals(Point(65, 29), v.region(Point(60, 20)))
+        assertEquals(Point(65, 29), v.region(Point(60, 30)))
+        assertEquals(Point(65, 29), v.region(Point(60, 40)))
+        assertEquals(Point(65, 29), v.region(Point(60, 50)))
+        assertEquals(Point(57, 81), v.region(Point(60, 60)))
+        assertEquals(Point(57, 81), v.region(Point(60, 70)))
+        assertEquals(Point(57, 81), v.region(Point(60, 80)))
+        assertEquals(Point(59, 97), v.region(Point(60, 90)))
+        assertEquals(Point(65, 29), v.region(Point(70, 0)))
+        assertEquals(Point(65, 29), v.region(Point(70, 10)))
+        assertEquals(Point(65, 29), v.region(Point(70, 20)))
+        assertEquals(Point(65, 29), v.region(Point(70, 30)))
+        assertEquals(Point(65, 29), v.region(Point(70, 40)))
+        assertEquals(Point(65, 29), v.region(Point(70, 50)))
+        assertEquals(Point(57, 81), v.region(Point(70, 60)))
+        assertEquals(Point(57, 81), v.region(Point(70, 70)))
+        assertEquals(Point(57, 81), v.region(Point(70, 80)))
+        assertEquals(Point(73, 96), v.region(Point(70, 90)))
+        assertEquals(Point(87, 26), v.region(Point(80, 0)))
+        assertEquals(Point(87, 26), v.region(Point(80, 10)))
+        assertEquals(Point(87, 26), v.region(Point(80, 20)))
+        assertEquals(Point(87, 26), v.region(Point(80, 30)))
+        assertEquals(Point(87, 26), v.region(Point(80, 40)))
+        assertEquals(Point(87, 26), v.region(Point(80, 50)))
+        assertEquals(Point(81, 90), v.region(Point(80, 60)))
+        assertEquals(Point(81, 90), v.region(Point(80, 70)))
+        assertEquals(Point(81, 90), v.region(Point(80, 80)))
+        assertEquals(Point(81, 90), v.region(Point(80, 90)))
+        assertEquals(Point(87, 26), v.region(Point(90, 0)))
+        assertEquals(Point(87, 26), v.region(Point(90, 10)))
+        assertEquals(Point(87, 26), v.region(Point(90, 20)))
+        assertEquals(Point(87, 26), v.region(Point(90, 30)))
+        assertEquals(Point(87, 26), v.region(Point(90, 40)))
+        assertEquals(Point(87, 26), v.region(Point(90, 50)))
+        assertEquals(Point(81, 90), v.region(Point(90, 60)))
+        assertEquals(Point(81, 90), v.region(Point(90, 70)))
+        assertEquals(Point(81, 90), v.region(Point(90, 80)))
+        assertEquals(Point(81, 90), v.region(Point(90, 90)))
     }
 
     @Test
     fun test3() {
         val v = Voronoi(
-                listOf(
-                        Point(16, 9),
-                        Point(17, 2),
-                        Point(5, 19),
-                        Point(3, 24),
-                        Point(17, 12),
-                        Point(15, 10),
-                        Point(12, 1),
-                        Point(21, 4),
-                        Point(11, 21),
-                        Point(1, 20),
-                        Point(11, 13),
-                        Point(13, 4),
-                        Point(15, 8),
-                        Point(22, 20),
-                        Point(21, 20),
-                        Point(24, 0),
-                        Point(2, 12),
-                        Point(3, 22),
-                        Point(19, 5),
-                        Point(19, 7),
-                        Point(19, 8),
-                        Point(0, 18),
-                        Point(17, 20),
-                        Point(17, 0),
-                        Point(13, 0)
-                ), Point.EUCLIDEAN_DISTANCE_FUNC
+            listOf(
+                Point(16, 9),
+                Point(17, 2),
+                Point(5, 19),
+                Point(3, 24),
+                Point(17, 12),
+                Point(15, 10),
+                Point(12, 1),
+                Point(21, 4),
+                Point(11, 21),
+                Point(1, 20),
+                Point(11, 13),
+                Point(13, 4),
+                Point(15, 8),
+                Point(22, 20),
+                Point(21, 20),
+                Point(24, 0),
+                Point(2, 12),
+                Point(3, 22),
+                Point(19, 5),
+                Point(19, 7),
+                Point(19, 8),
+                Point(0, 18),
+                Point(17, 20),
+                Point(17, 0),
+                Point(13, 0)
+            ), Point.EUCLIDEAN_DISTANCE_FUNC
         )
-        Assert.assertEquals(25, v.count)
-        Assert.assertEquals(Point(12, 1), v.region(Point(0, 0)))
-        Assert.assertEquals(Point(2, 12), v.region(Point(0, 5)))
-        Assert.assertEquals(Point(2, 12), v.region(Point(0, 10)))
-        Assert.assertEquals(Point(0, 18), v.region(Point(0, 15)))
-        Assert.assertEquals(Point(1, 20), v.region(Point(0, 20)))
-        Assert.assertEquals(Point(12, 1), v.region(Point(5, 0)))
-        Assert.assertEquals(Point(2, 12), v.region(Point(5, 5)))
-        Assert.assertEquals(Point(2, 12), v.region(Point(5, 10)))
-        Assert.assertEquals(Point(5, 19), v.region(Point(5, 15)))
-        Assert.assertEquals(Point(5, 19), v.region(Point(5, 20)))
-        Assert.assertEquals(Point(12, 1), v.region(Point(10, 0)))
-        Assert.assertEquals(Point(13, 4), v.region(Point(10, 5)))
-        Assert.assertEquals(Point(11, 13), v.region(Point(10, 10)))
-        Assert.assertEquals(Point(11, 13), v.region(Point(10, 15)))
-        Assert.assertEquals(Point(11, 21), v.region(Point(10, 20)))
-        Assert.assertEquals(Point(17, 0), v.region(Point(15, 0)))
-        Assert.assertEquals(Point(13, 4), v.region(Point(15, 5)))
-        Assert.assertEquals(Point(15, 10), v.region(Point(15, 10)))
-        Assert.assertEquals(Point(17, 12), v.region(Point(15, 15)))
-        Assert.assertEquals(Point(17, 20), v.region(Point(15, 20)))
-        Assert.assertEquals(Point(17, 0), v.region(Point(20, 0)))
-        Assert.assertEquals(Point(19, 5), v.region(Point(20, 5)))
-        Assert.assertEquals(Point(19, 8), v.region(Point(20, 10)))
-        Assert.assertEquals(Point(17, 12), v.region(Point(20, 15)))
-        Assert.assertEquals(Point(21, 20), v.region(Point(20, 20)))
+        assertEquals(25, v.count)
+        assertEquals(Point(12, 1), v.region(Point(0, 0)))
+        assertEquals(Point(2, 12), v.region(Point(0, 5)))
+        assertEquals(Point(2, 12), v.region(Point(0, 10)))
+        assertEquals(Point(0, 18), v.region(Point(0, 15)))
+        assertEquals(Point(1, 20), v.region(Point(0, 20)))
+        assertEquals(Point(12, 1), v.region(Point(5, 0)))
+        assertEquals(Point(2, 12), v.region(Point(5, 5)))
+        assertEquals(Point(2, 12), v.region(Point(5, 10)))
+        assertEquals(Point(5, 19), v.region(Point(5, 15)))
+        assertEquals(Point(5, 19), v.region(Point(5, 20)))
+        assertEquals(Point(12, 1), v.region(Point(10, 0)))
+        assertEquals(Point(13, 4), v.region(Point(10, 5)))
+        assertEquals(Point(11, 13), v.region(Point(10, 10)))
+        assertEquals(Point(11, 13), v.region(Point(10, 15)))
+        assertEquals(Point(11, 21), v.region(Point(10, 20)))
+        assertEquals(Point(17, 0), v.region(Point(15, 0)))
+        assertEquals(Point(13, 4), v.region(Point(15, 5)))
+        assertEquals(Point(15, 10), v.region(Point(15, 10)))
+        assertEquals(Point(17, 12), v.region(Point(15, 15)))
+        assertEquals(Point(17, 20), v.region(Point(15, 20)))
+        assertEquals(Point(17, 0), v.region(Point(20, 0)))
+        assertEquals(Point(19, 5), v.region(Point(20, 5)))
+        assertEquals(Point(19, 8), v.region(Point(20, 10)))
+        assertEquals(Point(17, 12), v.region(Point(20, 15)))
+        assertEquals(Point(21, 20), v.region(Point(20, 20)))
     }
 
     @Test
     fun test4() {
         val v = Voronoi(
-                listOf(
-                        Point(7, 2),
-                        Point(6, 6),
-                        Point(8, 9)
-                ), Point.EUCLIDEAN_DISTANCE_FUNC
+            listOf(
+                Point(7, 2),
+                Point(6, 6),
+                Point(8, 9)
+            ), Point.EUCLIDEAN_DISTANCE_FUNC
         )
-        Assert.assertEquals(Point(7, 2), v.region(Point(0, 0)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(0, 2)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(0, 4)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(0, 6)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(0, 8)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(2, 0)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(2, 2)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(2, 4)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(2, 6)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(2, 8)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(4, 0)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(4, 2)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(4, 4)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(4, 6)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(4, 8)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(6, 0)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(6, 2)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(6, 4)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(6, 6)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(6, 8)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(8, 0)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(8, 2)))
-        Assert.assertEquals(Point(7, 2), v.region(Point(8, 4)))
-        Assert.assertEquals(Point(6, 6), v.region(Point(8, 6)))
-        Assert.assertEquals(Point(8, 9), v.region(Point(8, 8)))
+        assertEquals(Point(7, 2), v.region(Point(0, 0)))
+        assertEquals(Point(7, 2), v.region(Point(0, 2)))
+        assertEquals(Point(6, 6), v.region(Point(0, 4)))
+        assertEquals(Point(6, 6), v.region(Point(0, 6)))
+        assertEquals(Point(6, 6), v.region(Point(0, 8)))
+        assertEquals(Point(7, 2), v.region(Point(2, 0)))
+        assertEquals(Point(7, 2), v.region(Point(2, 2)))
+        assertEquals(Point(6, 6), v.region(Point(2, 4)))
+        assertEquals(Point(6, 6), v.region(Point(2, 6)))
+        assertEquals(Point(6, 6), v.region(Point(2, 8)))
+        assertEquals(Point(7, 2), v.region(Point(4, 0)))
+        assertEquals(Point(7, 2), v.region(Point(4, 2)))
+        assertEquals(Point(6, 6), v.region(Point(4, 4)))
+        assertEquals(Point(6, 6), v.region(Point(4, 6)))
+        assertEquals(Point(6, 6), v.region(Point(4, 8)))
+        assertEquals(Point(7, 2), v.region(Point(6, 0)))
+        assertEquals(Point(7, 2), v.region(Point(6, 2)))
+        assertEquals(Point(6, 6), v.region(Point(6, 4)))
+        assertEquals(Point(6, 6), v.region(Point(6, 6)))
+        assertEquals(Point(6, 6), v.region(Point(6, 8)))
+        assertEquals(Point(7, 2), v.region(Point(8, 0)))
+        assertEquals(Point(7, 2), v.region(Point(8, 2)))
+        assertEquals(Point(7, 2), v.region(Point(8, 4)))
+        assertEquals(Point(6, 6), v.region(Point(8, 6)))
+        assertEquals(Point(8, 9), v.region(Point(8, 8)))
     }
 
     @Test
     fun test5() {
         val v = Voronoi(
-                listOf(
-                        Point(44, 27),
-                        Point(2, 35),
-                        Point(24, 10),
-                        Point(45, 25),
-                        Point(29, 39),
-                        Point(32, 9),
-                        Point(15, 16),
-                        Point(17, 40),
-                        Point(7, 6),
-                        Point(6, 5),
-                        Point(39, 15),
-                        Point(20, 1),
-                        Point(29, 20),
-                        Point(6, 36),
-                        Point(40, 28),
-                        Point(41, 4),
-                        Point(41, 34),
-                        Point(36, 11),
-                        Point(8, 19),
-                        Point(37, 34),
-                        Point(29, 35),
-                        Point(44, 42),
-                        Point(20, 45),
-                        Point(10, 43),
-                        Point(37, 39),
-                        Point(42, 9),
-                        Point(11, 32),
-                        Point(16, 38),
-                        Point(32, 41),
-                        Point(23, 12),
-                        Point(15, 40),
-                        Point(5, 42),
-                        Point(7, 31),
-                        Point(2, 23),
-                        Point(42, 36),
-                        Point(10, 12),
-                        Point(47, 27),
-                        Point(27, 20),
-                        Point(26, 1),
-                        Point(23, 25),
-                        Point(47, 7),
-                        Point(4, 36),
-                        Point(49, 7),
-                        Point(40, 26),
-                        Point(13, 21),
-                        Point(11, 6),
-                        Point(34, 21),
-                        Point(1, 40),
-                        Point(43, 30),
-                        Point(12, 48)
-                ), Point.EUCLIDEAN_DISTANCE_FUNC
+            listOf(
+                Point(44, 27),
+                Point(2, 35),
+                Point(24, 10),
+                Point(45, 25),
+                Point(29, 39),
+                Point(32, 9),
+                Point(15, 16),
+                Point(17, 40),
+                Point(7, 6),
+                Point(6, 5),
+                Point(39, 15),
+                Point(20, 1),
+                Point(29, 20),
+                Point(6, 36),
+                Point(40, 28),
+                Point(41, 4),
+                Point(41, 34),
+                Point(36, 11),
+                Point(8, 19),
+                Point(37, 34),
+                Point(29, 35),
+                Point(44, 42),
+                Point(20, 45),
+                Point(10, 43),
+                Point(37, 39),
+                Point(42, 9),
+                Point(11, 32),
+                Point(16, 38),
+                Point(32, 41),
+                Point(23, 12),
+                Point(15, 40),
+                Point(5, 42),
+                Point(7, 31),
+                Point(2, 23),
+                Point(42, 36),
+                Point(10, 12),
+                Point(47, 27),
+                Point(27, 20),
+                Point(26, 1),
+                Point(23, 25),
+                Point(47, 7),
+                Point(4, 36),
+                Point(49, 7),
+                Point(40, 26),
+                Point(13, 21),
+                Point(11, 6),
+                Point(34, 21),
+                Point(1, 40),
+                Point(43, 30),
+                Point(12, 48)
+            ), Point.EUCLIDEAN_DISTANCE_FUNC
         )
-        Assert.assertEquals(50, v.count)
-        Assert.assertEquals(Point(6, 5), v.region(Point(0, 0)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(0, 2)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(0, 4)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(0, 6)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(0, 8)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(0, 10)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(0, 12)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 14)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 16)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 18)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 20)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 22)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 24)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 26)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(0, 28)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(0, 30)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(0, 32)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(0, 34)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(0, 36)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(0, 38)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(0, 40)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(0, 42)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(0, 44)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(0, 46)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(0, 48)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(2, 0)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(2, 2)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(2, 4)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(2, 6)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(2, 8)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(2, 10)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(2, 12)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(2, 14)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(2, 16)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(2, 18)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(2, 20)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(2, 22)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(2, 24)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(2, 26)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(2, 28)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(2, 30)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(2, 32)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(2, 34)))
-        Assert.assertEquals(Point(2, 35), v.region(Point(2, 36)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(2, 38)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(2, 40)))
-        Assert.assertEquals(Point(1, 40), v.region(Point(2, 42)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(2, 44)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(2, 46)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(2, 48)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(4, 0)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(4, 2)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(4, 4)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(4, 6)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(4, 8)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(4, 10)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(4, 12)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(4, 14)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(4, 16)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(4, 18)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(4, 20)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(4, 22)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(4, 24)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(4, 26)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(4, 28)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(4, 30)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(4, 32)))
-        Assert.assertEquals(Point(4, 36), v.region(Point(4, 34)))
-        Assert.assertEquals(Point(4, 36), v.region(Point(4, 36)))
-        Assert.assertEquals(Point(4, 36), v.region(Point(4, 38)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(4, 40)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(4, 42)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(4, 44)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(4, 46)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(4, 48)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(6, 0)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(6, 2)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(6, 4)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(6, 6)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(6, 8)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(6, 10)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(6, 12)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(6, 14)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(6, 16)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(6, 18)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(6, 20)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(6, 22)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(6, 24)))
-        Assert.assertEquals(Point(2, 23), v.region(Point(6, 26)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(6, 28)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(6, 30)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(6, 32)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(6, 34)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(6, 36)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(6, 38)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(6, 40)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(6, 42)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(6, 44)))
-        Assert.assertEquals(Point(5, 42), v.region(Point(6, 46)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(6, 48)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(8, 0)))
-        Assert.assertEquals(Point(6, 5), v.region(Point(8, 2)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(8, 4)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(8, 6)))
-        Assert.assertEquals(Point(7, 6), v.region(Point(8, 8)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(8, 10)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(8, 12)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(8, 14)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(8, 16)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(8, 18)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(8, 20)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(8, 22)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(8, 24)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(8, 26)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(8, 28)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(8, 30)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(8, 32)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(8, 34)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(8, 36)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(8, 38)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(8, 40)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(8, 42)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(8, 44)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(8, 46)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(8, 48)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(10, 0)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(10, 2)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(10, 4)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(10, 6)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(10, 8)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(10, 10)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(10, 12)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(10, 14)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(10, 16)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(10, 18)))
-        Assert.assertEquals(Point(8, 19), v.region(Point(10, 20)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(10, 22)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(10, 24)))
-        Assert.assertEquals(Point(7, 31), v.region(Point(10, 26)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(10, 28)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(10, 30)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(10, 32)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(10, 34)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(10, 36)))
-        Assert.assertEquals(Point(6, 36), v.region(Point(10, 38)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(10, 40)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(10, 42)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(10, 44)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(10, 46)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(10, 48)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(12, 0)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(12, 2)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(12, 4)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(12, 6)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(12, 8)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(12, 10)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(12, 12)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(12, 14)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(12, 16)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(12, 18)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(12, 20)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(12, 22)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(12, 24)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(12, 26)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(12, 28)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(12, 30)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(12, 32)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(12, 34)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(12, 36)))
-        Assert.assertEquals(Point(15, 40), v.region(Point(12, 38)))
-        Assert.assertEquals(Point(15, 40), v.region(Point(12, 40)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(12, 42)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(12, 44)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(12, 46)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(12, 48)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(14, 0)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(14, 2)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(14, 4)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(14, 6)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(14, 8)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(14, 10)))
-        Assert.assertEquals(Point(10, 12), v.region(Point(14, 12)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(14, 14)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(14, 16)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(14, 18)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(14, 20)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(14, 22)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(14, 24)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(14, 26)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(14, 28)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(14, 30)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(14, 32)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(14, 34)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(14, 36)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(14, 38)))
-        Assert.assertEquals(Point(15, 40), v.region(Point(14, 40)))
-        Assert.assertEquals(Point(15, 40), v.region(Point(14, 42)))
-        Assert.assertEquals(Point(10, 43), v.region(Point(14, 44)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(14, 46)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(14, 48)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(16, 0)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(16, 2)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(16, 4)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(16, 6)))
-        Assert.assertEquals(Point(11, 6), v.region(Point(16, 8)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(16, 10)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(16, 12)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(16, 14)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(16, 16)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(16, 18)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(16, 20)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(16, 22)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(16, 24)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(16, 26)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(16, 28)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(16, 30)))
-        Assert.assertEquals(Point(11, 32), v.region(Point(16, 32)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(16, 34)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(16, 36)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(16, 38)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(16, 40)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(16, 42)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(16, 44)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(16, 46)))
-        Assert.assertEquals(Point(12, 48), v.region(Point(16, 48)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(18, 0)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(18, 2)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(18, 4)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(18, 6)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(18, 8)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(18, 10)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(18, 12)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(18, 14)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(18, 16)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(18, 18)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(18, 20)))
-        Assert.assertEquals(Point(13, 21), v.region(Point(18, 22)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(18, 24)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(18, 26)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(18, 28)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(18, 30)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(18, 32)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(18, 34)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(18, 36)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(18, 38)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(18, 40)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(18, 42)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(18, 44)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(18, 46)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(18, 48)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(20, 0)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(20, 2)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(20, 4)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(20, 6)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(20, 8)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(20, 10)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(20, 12)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(20, 14)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(20, 16)))
-        Assert.assertEquals(Point(15, 16), v.region(Point(20, 18)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(20, 20)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(20, 22)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(20, 24)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(20, 26)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(20, 28)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(20, 30)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(20, 32)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(20, 34)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(20, 36)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(20, 38)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(20, 40)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(20, 42)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(20, 44)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(20, 46)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(20, 48)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(22, 0)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(22, 2)))
-        Assert.assertEquals(Point(20, 1), v.region(Point(22, 4)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(22, 6)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(22, 8)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(22, 10)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(22, 12)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(22, 14)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(22, 16)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(22, 18)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(22, 20)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(22, 22)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(22, 24)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(22, 26)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(22, 28)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(22, 30)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(22, 32)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(22, 34)))
-        Assert.assertEquals(Point(16, 38), v.region(Point(22, 36)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(22, 38)))
-        Assert.assertEquals(Point(17, 40), v.region(Point(22, 40)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(22, 42)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(22, 44)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(22, 46)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(22, 48)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(24, 0)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(24, 2)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(24, 4)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(24, 6)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(24, 8)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(24, 10)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(24, 12)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(24, 14)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(24, 16)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(24, 18)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(24, 20)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(24, 22)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(24, 24)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(24, 26)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(24, 28)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(24, 30)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(24, 32)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(24, 34)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(24, 36)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(24, 38)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(24, 40)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(24, 42)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(24, 44)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(24, 46)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(24, 48)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(26, 0)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(26, 2)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(26, 4)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(26, 6)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(26, 8)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(26, 10)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(26, 12)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(26, 14)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(26, 16)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(26, 18)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(26, 20)))
-        Assert.assertEquals(Point(27, 20), v.region(Point(26, 22)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(26, 24)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(26, 26)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(26, 28)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(26, 30)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(26, 32)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(26, 34)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(26, 36)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(26, 38)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(26, 40)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(26, 42)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(26, 44)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(26, 46)))
-        Assert.assertEquals(Point(20, 45), v.region(Point(26, 48)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(28, 0)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(28, 2)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(28, 4)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(28, 6)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(28, 8)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(28, 10)))
-        Assert.assertEquals(Point(24, 10), v.region(Point(28, 12)))
-        Assert.assertEquals(Point(23, 12), v.region(Point(28, 14)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(28, 16)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(28, 18)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(28, 20)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(28, 22)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(28, 24)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(28, 26)))
-        Assert.assertEquals(Point(23, 25), v.region(Point(28, 28)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(28, 30)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(28, 32)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(28, 34)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(28, 36)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(28, 38)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(28, 40)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(28, 42)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(28, 44)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(28, 46)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(28, 48)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(30, 0)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(30, 2)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(30, 4)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(30, 6)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(30, 8)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(30, 10)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(30, 12)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(30, 14)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(30, 16)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(30, 18)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(30, 20)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(30, 22)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(30, 24)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(30, 26)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(30, 28)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(30, 30)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(30, 32)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(30, 34)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(30, 36)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(30, 38)))
-        Assert.assertEquals(Point(29, 39), v.region(Point(30, 40)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(30, 42)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(30, 44)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(30, 46)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(30, 48)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(32, 0)))
-        Assert.assertEquals(Point(26, 1), v.region(Point(32, 2)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(32, 4)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(32, 6)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(32, 8)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(32, 10)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(32, 12)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(32, 14)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(32, 16)))
-        Assert.assertEquals(Point(29, 20), v.region(Point(32, 18)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(32, 20)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(32, 22)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(32, 24)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(32, 26)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(32, 28)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(32, 30)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(32, 32)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(32, 34)))
-        Assert.assertEquals(Point(29, 35), v.region(Point(32, 36)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(32, 38)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(32, 40)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(32, 42)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(32, 44)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(32, 46)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(32, 48)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(34, 0)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(34, 2)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(34, 4)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(34, 6)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(34, 8)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(34, 10)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(34, 12)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(34, 14)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(34, 16)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(34, 18)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(34, 20)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(34, 22)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(34, 24)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(34, 26)))
-        Assert.assertEquals(Point(40, 28), v.region(Point(34, 28)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(34, 30)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(34, 32)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(34, 34)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(34, 36)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(34, 38)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(34, 40)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(34, 42)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(34, 44)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(34, 46)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(34, 48)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(36, 0)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(36, 2)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(36, 4)))
-        Assert.assertEquals(Point(32, 9), v.region(Point(36, 6)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(36, 8)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(36, 10)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(36, 12)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(36, 14)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(36, 16)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(36, 18)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(36, 20)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(36, 22)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(36, 24)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(36, 26)))
-        Assert.assertEquals(Point(40, 28), v.region(Point(36, 28)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(36, 30)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(36, 32)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(36, 34)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(36, 36)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(36, 38)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(36, 40)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(36, 42)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(36, 44)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(36, 46)))
-        Assert.assertEquals(Point(32, 41), v.region(Point(36, 48)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(38, 0)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(38, 2)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(38, 4)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(38, 6)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(38, 8)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(38, 10)))
-        Assert.assertEquals(Point(36, 11), v.region(Point(38, 12)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(38, 14)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(38, 16)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(38, 18)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(38, 20)))
-        Assert.assertEquals(Point(34, 21), v.region(Point(38, 22)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(38, 24)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(38, 26)))
-        Assert.assertEquals(Point(40, 28), v.region(Point(38, 28)))
-        Assert.assertEquals(Point(40, 28), v.region(Point(38, 30)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(38, 32)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(38, 34)))
-        Assert.assertEquals(Point(37, 34), v.region(Point(38, 36)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(38, 38)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(38, 40)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(38, 42)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(38, 44)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(38, 46)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(38, 48)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(40, 0)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(40, 2)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(40, 4)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(40, 6)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(40, 8)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(40, 10)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(40, 12)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(40, 14)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(40, 16)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(40, 18)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(40, 20)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(40, 22)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(40, 24)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(40, 26)))
-        Assert.assertEquals(Point(40, 28), v.region(Point(40, 28)))
-        Assert.assertEquals(Point(40, 28), v.region(Point(40, 30)))
-        Assert.assertEquals(Point(41, 34), v.region(Point(40, 32)))
-        Assert.assertEquals(Point(41, 34), v.region(Point(40, 34)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(40, 36)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(40, 38)))
-        Assert.assertEquals(Point(37, 39), v.region(Point(40, 40)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(40, 42)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(40, 44)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(40, 46)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(40, 48)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(42, 0)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(42, 2)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(42, 4)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(42, 6)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(42, 8)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(42, 10)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(42, 12)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(42, 14)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(42, 16)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(42, 18)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(42, 20)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(42, 22)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(42, 24)))
-        Assert.assertEquals(Point(40, 26), v.region(Point(42, 26)))
-        Assert.assertEquals(Point(40, 28), v.region(Point(42, 28)))
-        Assert.assertEquals(Point(43, 30), v.region(Point(42, 30)))
-        Assert.assertEquals(Point(41, 34), v.region(Point(42, 32)))
-        Assert.assertEquals(Point(41, 34), v.region(Point(42, 34)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(42, 36)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(42, 38)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(42, 40)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(42, 42)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(42, 44)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(42, 46)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(42, 48)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(44, 0)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(44, 2)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(44, 4)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(44, 6)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(44, 8)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(44, 10)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(44, 12)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(44, 14)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(44, 16)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(44, 18)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(44, 20)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(44, 22)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(44, 24)))
-        Assert.assertEquals(Point(44, 27), v.region(Point(44, 26)))
-        Assert.assertEquals(Point(44, 27), v.region(Point(44, 28)))
-        Assert.assertEquals(Point(43, 30), v.region(Point(44, 30)))
-        Assert.assertEquals(Point(43, 30), v.region(Point(44, 32)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(44, 34)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(44, 36)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(44, 38)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(44, 40)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(44, 42)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(44, 44)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(44, 46)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(44, 48)))
-        Assert.assertEquals(Point(41, 4), v.region(Point(46, 0)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(46, 2)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(46, 4)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(46, 6)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(46, 8)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(46, 10)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(46, 12)))
-        Assert.assertEquals(Point(42, 9), v.region(Point(46, 14)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(46, 16)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(46, 18)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(46, 20)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(46, 22)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(46, 24)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(46, 26)))
-        Assert.assertEquals(Point(47, 27), v.region(Point(46, 28)))
-        Assert.assertEquals(Point(43, 30), v.region(Point(46, 30)))
-        Assert.assertEquals(Point(43, 30), v.region(Point(46, 32)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(46, 34)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(46, 36)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(46, 38)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(46, 40)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(46, 42)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(46, 44)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(46, 46)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(46, 48)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 0)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 2)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 4)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 6)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 8)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 10)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 12)))
-        Assert.assertEquals(Point(47, 7), v.region(Point(48, 14)))
-        Assert.assertEquals(Point(39, 15), v.region(Point(48, 16)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(48, 18)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(48, 20)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(48, 22)))
-        Assert.assertEquals(Point(45, 25), v.region(Point(48, 24)))
-        Assert.assertEquals(Point(47, 27), v.region(Point(48, 26)))
-        Assert.assertEquals(Point(47, 27), v.region(Point(48, 28)))
-        Assert.assertEquals(Point(47, 27), v.region(Point(48, 30)))
-        Assert.assertEquals(Point(47, 27), v.region(Point(48, 32)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(48, 34)))
-        Assert.assertEquals(Point(42, 36), v.region(Point(48, 36)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(48, 38)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(48, 40)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(48, 42)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(48, 44)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(48, 46)))
-        Assert.assertEquals(Point(44, 42), v.region(Point(48, 48)))
+        assertEquals(50, v.count)
+        assertEquals(Point(6, 5), v.region(Point(0, 0)))
+        assertEquals(Point(6, 5), v.region(Point(0, 2)))
+        assertEquals(Point(6, 5), v.region(Point(0, 4)))
+        assertEquals(Point(6, 5), v.region(Point(0, 6)))
+        assertEquals(Point(6, 5), v.region(Point(0, 8)))
+        assertEquals(Point(6, 5), v.region(Point(0, 10)))
+        assertEquals(Point(7, 6), v.region(Point(0, 12)))
+        assertEquals(Point(2, 23), v.region(Point(0, 14)))
+        assertEquals(Point(2, 23), v.region(Point(0, 16)))
+        assertEquals(Point(2, 23), v.region(Point(0, 18)))
+        assertEquals(Point(2, 23), v.region(Point(0, 20)))
+        assertEquals(Point(2, 23), v.region(Point(0, 22)))
+        assertEquals(Point(2, 23), v.region(Point(0, 24)))
+        assertEquals(Point(2, 23), v.region(Point(0, 26)))
+        assertEquals(Point(2, 23), v.region(Point(0, 28)))
+        assertEquals(Point(2, 35), v.region(Point(0, 30)))
+        assertEquals(Point(2, 35), v.region(Point(0, 32)))
+        assertEquals(Point(2, 35), v.region(Point(0, 34)))
+        assertEquals(Point(2, 35), v.region(Point(0, 36)))
+        assertEquals(Point(1, 40), v.region(Point(0, 38)))
+        assertEquals(Point(1, 40), v.region(Point(0, 40)))
+        assertEquals(Point(1, 40), v.region(Point(0, 42)))
+        assertEquals(Point(1, 40), v.region(Point(0, 44)))
+        assertEquals(Point(1, 40), v.region(Point(0, 46)))
+        assertEquals(Point(5, 42), v.region(Point(0, 48)))
+        assertEquals(Point(6, 5), v.region(Point(2, 0)))
+        assertEquals(Point(6, 5), v.region(Point(2, 2)))
+        assertEquals(Point(6, 5), v.region(Point(2, 4)))
+        assertEquals(Point(6, 5), v.region(Point(2, 6)))
+        assertEquals(Point(6, 5), v.region(Point(2, 8)))
+        assertEquals(Point(7, 6), v.region(Point(2, 10)))
+        assertEquals(Point(7, 6), v.region(Point(2, 12)))
+        assertEquals(Point(8, 19), v.region(Point(2, 14)))
+        assertEquals(Point(8, 19), v.region(Point(2, 16)))
+        assertEquals(Point(2, 23), v.region(Point(2, 18)))
+        assertEquals(Point(2, 23), v.region(Point(2, 20)))
+        assertEquals(Point(2, 23), v.region(Point(2, 22)))
+        assertEquals(Point(2, 23), v.region(Point(2, 24)))
+        assertEquals(Point(2, 23), v.region(Point(2, 26)))
+        assertEquals(Point(2, 23), v.region(Point(2, 28)))
+        assertEquals(Point(2, 35), v.region(Point(2, 30)))
+        assertEquals(Point(2, 35), v.region(Point(2, 32)))
+        assertEquals(Point(2, 35), v.region(Point(2, 34)))
+        assertEquals(Point(2, 35), v.region(Point(2, 36)))
+        assertEquals(Point(1, 40), v.region(Point(2, 38)))
+        assertEquals(Point(1, 40), v.region(Point(2, 40)))
+        assertEquals(Point(1, 40), v.region(Point(2, 42)))
+        assertEquals(Point(5, 42), v.region(Point(2, 44)))
+        assertEquals(Point(5, 42), v.region(Point(2, 46)))
+        assertEquals(Point(5, 42), v.region(Point(2, 48)))
+        assertEquals(Point(6, 5), v.region(Point(4, 0)))
+        assertEquals(Point(6, 5), v.region(Point(4, 2)))
+        assertEquals(Point(6, 5), v.region(Point(4, 4)))
+        assertEquals(Point(6, 5), v.region(Point(4, 6)))
+        assertEquals(Point(7, 6), v.region(Point(4, 8)))
+        assertEquals(Point(7, 6), v.region(Point(4, 10)))
+        assertEquals(Point(10, 12), v.region(Point(4, 12)))
+        assertEquals(Point(10, 12), v.region(Point(4, 14)))
+        assertEquals(Point(8, 19), v.region(Point(4, 16)))
+        assertEquals(Point(8, 19), v.region(Point(4, 18)))
+        assertEquals(Point(2, 23), v.region(Point(4, 20)))
+        assertEquals(Point(2, 23), v.region(Point(4, 22)))
+        assertEquals(Point(2, 23), v.region(Point(4, 24)))
+        assertEquals(Point(2, 23), v.region(Point(4, 26)))
+        assertEquals(Point(7, 31), v.region(Point(4, 28)))
+        assertEquals(Point(7, 31), v.region(Point(4, 30)))
+        assertEquals(Point(7, 31), v.region(Point(4, 32)))
+        assertEquals(Point(4, 36), v.region(Point(4, 34)))
+        assertEquals(Point(4, 36), v.region(Point(4, 36)))
+        assertEquals(Point(4, 36), v.region(Point(4, 38)))
+        assertEquals(Point(5, 42), v.region(Point(4, 40)))
+        assertEquals(Point(5, 42), v.region(Point(4, 42)))
+        assertEquals(Point(5, 42), v.region(Point(4, 44)))
+        assertEquals(Point(5, 42), v.region(Point(4, 46)))
+        assertEquals(Point(5, 42), v.region(Point(4, 48)))
+        assertEquals(Point(6, 5), v.region(Point(6, 0)))
+        assertEquals(Point(6, 5), v.region(Point(6, 2)))
+        assertEquals(Point(6, 5), v.region(Point(6, 4)))
+        assertEquals(Point(7, 6), v.region(Point(6, 6)))
+        assertEquals(Point(7, 6), v.region(Point(6, 8)))
+        assertEquals(Point(7, 6), v.region(Point(6, 10)))
+        assertEquals(Point(10, 12), v.region(Point(6, 12)))
+        assertEquals(Point(10, 12), v.region(Point(6, 14)))
+        assertEquals(Point(8, 19), v.region(Point(6, 16)))
+        assertEquals(Point(8, 19), v.region(Point(6, 18)))
+        assertEquals(Point(8, 19), v.region(Point(6, 20)))
+        assertEquals(Point(8, 19), v.region(Point(6, 22)))
+        assertEquals(Point(2, 23), v.region(Point(6, 24)))
+        assertEquals(Point(2, 23), v.region(Point(6, 26)))
+        assertEquals(Point(7, 31), v.region(Point(6, 28)))
+        assertEquals(Point(7, 31), v.region(Point(6, 30)))
+        assertEquals(Point(7, 31), v.region(Point(6, 32)))
+        assertEquals(Point(6, 36), v.region(Point(6, 34)))
+        assertEquals(Point(6, 36), v.region(Point(6, 36)))
+        assertEquals(Point(6, 36), v.region(Point(6, 38)))
+        assertEquals(Point(5, 42), v.region(Point(6, 40)))
+        assertEquals(Point(5, 42), v.region(Point(6, 42)))
+        assertEquals(Point(5, 42), v.region(Point(6, 44)))
+        assertEquals(Point(5, 42), v.region(Point(6, 46)))
+        assertEquals(Point(12, 48), v.region(Point(6, 48)))
+        assertEquals(Point(6, 5), v.region(Point(8, 0)))
+        assertEquals(Point(6, 5), v.region(Point(8, 2)))
+        assertEquals(Point(7, 6), v.region(Point(8, 4)))
+        assertEquals(Point(7, 6), v.region(Point(8, 6)))
+        assertEquals(Point(7, 6), v.region(Point(8, 8)))
+        assertEquals(Point(10, 12), v.region(Point(8, 10)))
+        assertEquals(Point(10, 12), v.region(Point(8, 12)))
+        assertEquals(Point(10, 12), v.region(Point(8, 14)))
+        assertEquals(Point(8, 19), v.region(Point(8, 16)))
+        assertEquals(Point(8, 19), v.region(Point(8, 18)))
+        assertEquals(Point(8, 19), v.region(Point(8, 20)))
+        assertEquals(Point(8, 19), v.region(Point(8, 22)))
+        assertEquals(Point(8, 19), v.region(Point(8, 24)))
+        assertEquals(Point(7, 31), v.region(Point(8, 26)))
+        assertEquals(Point(7, 31), v.region(Point(8, 28)))
+        assertEquals(Point(7, 31), v.region(Point(8, 30)))
+        assertEquals(Point(7, 31), v.region(Point(8, 32)))
+        assertEquals(Point(6, 36), v.region(Point(8, 34)))
+        assertEquals(Point(6, 36), v.region(Point(8, 36)))
+        assertEquals(Point(6, 36), v.region(Point(8, 38)))
+        assertEquals(Point(10, 43), v.region(Point(8, 40)))
+        assertEquals(Point(10, 43), v.region(Point(8, 42)))
+        assertEquals(Point(10, 43), v.region(Point(8, 44)))
+        assertEquals(Point(10, 43), v.region(Point(8, 46)))
+        assertEquals(Point(12, 48), v.region(Point(8, 48)))
+        assertEquals(Point(11, 6), v.region(Point(10, 0)))
+        assertEquals(Point(11, 6), v.region(Point(10, 2)))
+        assertEquals(Point(11, 6), v.region(Point(10, 4)))
+        assertEquals(Point(11, 6), v.region(Point(10, 6)))
+        assertEquals(Point(11, 6), v.region(Point(10, 8)))
+        assertEquals(Point(10, 12), v.region(Point(10, 10)))
+        assertEquals(Point(10, 12), v.region(Point(10, 12)))
+        assertEquals(Point(10, 12), v.region(Point(10, 14)))
+        assertEquals(Point(8, 19), v.region(Point(10, 16)))
+        assertEquals(Point(8, 19), v.region(Point(10, 18)))
+        assertEquals(Point(8, 19), v.region(Point(10, 20)))
+        assertEquals(Point(13, 21), v.region(Point(10, 22)))
+        assertEquals(Point(13, 21), v.region(Point(10, 24)))
+        assertEquals(Point(7, 31), v.region(Point(10, 26)))
+        assertEquals(Point(11, 32), v.region(Point(10, 28)))
+        assertEquals(Point(11, 32), v.region(Point(10, 30)))
+        assertEquals(Point(11, 32), v.region(Point(10, 32)))
+        assertEquals(Point(11, 32), v.region(Point(10, 34)))
+        assertEquals(Point(6, 36), v.region(Point(10, 36)))
+        assertEquals(Point(6, 36), v.region(Point(10, 38)))
+        assertEquals(Point(10, 43), v.region(Point(10, 40)))
+        assertEquals(Point(10, 43), v.region(Point(10, 42)))
+        assertEquals(Point(10, 43), v.region(Point(10, 44)))
+        assertEquals(Point(12, 48), v.region(Point(10, 46)))
+        assertEquals(Point(12, 48), v.region(Point(10, 48)))
+        assertEquals(Point(11, 6), v.region(Point(12, 0)))
+        assertEquals(Point(11, 6), v.region(Point(12, 2)))
+        assertEquals(Point(11, 6), v.region(Point(12, 4)))
+        assertEquals(Point(11, 6), v.region(Point(12, 6)))
+        assertEquals(Point(11, 6), v.region(Point(12, 8)))
+        assertEquals(Point(10, 12), v.region(Point(12, 10)))
+        assertEquals(Point(10, 12), v.region(Point(12, 12)))
+        assertEquals(Point(10, 12), v.region(Point(12, 14)))
+        assertEquals(Point(15, 16), v.region(Point(12, 16)))
+        assertEquals(Point(13, 21), v.region(Point(12, 18)))
+        assertEquals(Point(13, 21), v.region(Point(12, 20)))
+        assertEquals(Point(13, 21), v.region(Point(12, 22)))
+        assertEquals(Point(13, 21), v.region(Point(12, 24)))
+        assertEquals(Point(13, 21), v.region(Point(12, 26)))
+        assertEquals(Point(11, 32), v.region(Point(12, 28)))
+        assertEquals(Point(11, 32), v.region(Point(12, 30)))
+        assertEquals(Point(11, 32), v.region(Point(12, 32)))
+        assertEquals(Point(11, 32), v.region(Point(12, 34)))
+        assertEquals(Point(11, 32), v.region(Point(12, 36)))
+        assertEquals(Point(15, 40), v.region(Point(12, 38)))
+        assertEquals(Point(15, 40), v.region(Point(12, 40)))
+        assertEquals(Point(10, 43), v.region(Point(12, 42)))
+        assertEquals(Point(10, 43), v.region(Point(12, 44)))
+        assertEquals(Point(12, 48), v.region(Point(12, 46)))
+        assertEquals(Point(12, 48), v.region(Point(12, 48)))
+        assertEquals(Point(20, 1), v.region(Point(14, 0)))
+        assertEquals(Point(11, 6), v.region(Point(14, 2)))
+        assertEquals(Point(11, 6), v.region(Point(14, 4)))
+        assertEquals(Point(11, 6), v.region(Point(14, 6)))
+        assertEquals(Point(11, 6), v.region(Point(14, 8)))
+        assertEquals(Point(10, 12), v.region(Point(14, 10)))
+        assertEquals(Point(10, 12), v.region(Point(14, 12)))
+        assertEquals(Point(15, 16), v.region(Point(14, 14)))
+        assertEquals(Point(15, 16), v.region(Point(14, 16)))
+        assertEquals(Point(15, 16), v.region(Point(14, 18)))
+        assertEquals(Point(13, 21), v.region(Point(14, 20)))
+        assertEquals(Point(13, 21), v.region(Point(14, 22)))
+        assertEquals(Point(13, 21), v.region(Point(14, 24)))
+        assertEquals(Point(13, 21), v.region(Point(14, 26)))
+        assertEquals(Point(11, 32), v.region(Point(14, 28)))
+        assertEquals(Point(11, 32), v.region(Point(14, 30)))
+        assertEquals(Point(11, 32), v.region(Point(14, 32)))
+        assertEquals(Point(11, 32), v.region(Point(14, 34)))
+        assertEquals(Point(16, 38), v.region(Point(14, 36)))
+        assertEquals(Point(16, 38), v.region(Point(14, 38)))
+        assertEquals(Point(15, 40), v.region(Point(14, 40)))
+        assertEquals(Point(15, 40), v.region(Point(14, 42)))
+        assertEquals(Point(10, 43), v.region(Point(14, 44)))
+        assertEquals(Point(12, 48), v.region(Point(14, 46)))
+        assertEquals(Point(12, 48), v.region(Point(14, 48)))
+        assertEquals(Point(20, 1), v.region(Point(16, 0)))
+        assertEquals(Point(20, 1), v.region(Point(16, 2)))
+        assertEquals(Point(20, 1), v.region(Point(16, 4)))
+        assertEquals(Point(11, 6), v.region(Point(16, 6)))
+        assertEquals(Point(11, 6), v.region(Point(16, 8)))
+        assertEquals(Point(15, 16), v.region(Point(16, 10)))
+        assertEquals(Point(15, 16), v.region(Point(16, 12)))
+        assertEquals(Point(15, 16), v.region(Point(16, 14)))
+        assertEquals(Point(15, 16), v.region(Point(16, 16)))
+        assertEquals(Point(15, 16), v.region(Point(16, 18)))
+        assertEquals(Point(13, 21), v.region(Point(16, 20)))
+        assertEquals(Point(13, 21), v.region(Point(16, 22)))
+        assertEquals(Point(13, 21), v.region(Point(16, 24)))
+        assertEquals(Point(13, 21), v.region(Point(16, 26)))
+        assertEquals(Point(11, 32), v.region(Point(16, 28)))
+        assertEquals(Point(11, 32), v.region(Point(16, 30)))
+        assertEquals(Point(11, 32), v.region(Point(16, 32)))
+        assertEquals(Point(16, 38), v.region(Point(16, 34)))
+        assertEquals(Point(16, 38), v.region(Point(16, 36)))
+        assertEquals(Point(16, 38), v.region(Point(16, 38)))
+        assertEquals(Point(17, 40), v.region(Point(16, 40)))
+        assertEquals(Point(17, 40), v.region(Point(16, 42)))
+        assertEquals(Point(17, 40), v.region(Point(16, 44)))
+        assertEquals(Point(20, 45), v.region(Point(16, 46)))
+        assertEquals(Point(12, 48), v.region(Point(16, 48)))
+        assertEquals(Point(20, 1), v.region(Point(18, 0)))
+        assertEquals(Point(20, 1), v.region(Point(18, 2)))
+        assertEquals(Point(20, 1), v.region(Point(18, 4)))
+        assertEquals(Point(20, 1), v.region(Point(18, 6)))
+        assertEquals(Point(24, 10), v.region(Point(18, 8)))
+        assertEquals(Point(23, 12), v.region(Point(18, 10)))
+        assertEquals(Point(15, 16), v.region(Point(18, 12)))
+        assertEquals(Point(15, 16), v.region(Point(18, 14)))
+        assertEquals(Point(15, 16), v.region(Point(18, 16)))
+        assertEquals(Point(15, 16), v.region(Point(18, 18)))
+        assertEquals(Point(15, 16), v.region(Point(18, 20)))
+        assertEquals(Point(13, 21), v.region(Point(18, 22)))
+        assertEquals(Point(23, 25), v.region(Point(18, 24)))
+        assertEquals(Point(23, 25), v.region(Point(18, 26)))
+        assertEquals(Point(23, 25), v.region(Point(18, 28)))
+        assertEquals(Point(23, 25), v.region(Point(18, 30)))
+        assertEquals(Point(16, 38), v.region(Point(18, 32)))
+        assertEquals(Point(16, 38), v.region(Point(18, 34)))
+        assertEquals(Point(16, 38), v.region(Point(18, 36)))
+        assertEquals(Point(16, 38), v.region(Point(18, 38)))
+        assertEquals(Point(17, 40), v.region(Point(18, 40)))
+        assertEquals(Point(17, 40), v.region(Point(18, 42)))
+        assertEquals(Point(20, 45), v.region(Point(18, 44)))
+        assertEquals(Point(20, 45), v.region(Point(18, 46)))
+        assertEquals(Point(20, 45), v.region(Point(18, 48)))
+        assertEquals(Point(20, 1), v.region(Point(20, 0)))
+        assertEquals(Point(20, 1), v.region(Point(20, 2)))
+        assertEquals(Point(20, 1), v.region(Point(20, 4)))
+        assertEquals(Point(20, 1), v.region(Point(20, 6)))
+        assertEquals(Point(24, 10), v.region(Point(20, 8)))
+        assertEquals(Point(23, 12), v.region(Point(20, 10)))
+        assertEquals(Point(23, 12), v.region(Point(20, 12)))
+        assertEquals(Point(23, 12), v.region(Point(20, 14)))
+        assertEquals(Point(15, 16), v.region(Point(20, 16)))
+        assertEquals(Point(15, 16), v.region(Point(20, 18)))
+        assertEquals(Point(23, 25), v.region(Point(20, 20)))
+        assertEquals(Point(23, 25), v.region(Point(20, 22)))
+        assertEquals(Point(23, 25), v.region(Point(20, 24)))
+        assertEquals(Point(23, 25), v.region(Point(20, 26)))
+        assertEquals(Point(23, 25), v.region(Point(20, 28)))
+        assertEquals(Point(23, 25), v.region(Point(20, 30)))
+        assertEquals(Point(16, 38), v.region(Point(20, 32)))
+        assertEquals(Point(16, 38), v.region(Point(20, 34)))
+        assertEquals(Point(16, 38), v.region(Point(20, 36)))
+        assertEquals(Point(17, 40), v.region(Point(20, 38)))
+        assertEquals(Point(17, 40), v.region(Point(20, 40)))
+        assertEquals(Point(20, 45), v.region(Point(20, 42)))
+        assertEquals(Point(20, 45), v.region(Point(20, 44)))
+        assertEquals(Point(20, 45), v.region(Point(20, 46)))
+        assertEquals(Point(20, 45), v.region(Point(20, 48)))
+        assertEquals(Point(20, 1), v.region(Point(22, 0)))
+        assertEquals(Point(20, 1), v.region(Point(22, 2)))
+        assertEquals(Point(20, 1), v.region(Point(22, 4)))
+        assertEquals(Point(24, 10), v.region(Point(22, 6)))
+        assertEquals(Point(24, 10), v.region(Point(22, 8)))
+        assertEquals(Point(24, 10), v.region(Point(22, 10)))
+        assertEquals(Point(23, 12), v.region(Point(22, 12)))
+        assertEquals(Point(23, 12), v.region(Point(22, 14)))
+        assertEquals(Point(23, 12), v.region(Point(22, 16)))
+        assertEquals(Point(27, 20), v.region(Point(22, 18)))
+        assertEquals(Point(27, 20), v.region(Point(22, 20)))
+        assertEquals(Point(23, 25), v.region(Point(22, 22)))
+        assertEquals(Point(23, 25), v.region(Point(22, 24)))
+        assertEquals(Point(23, 25), v.region(Point(22, 26)))
+        assertEquals(Point(23, 25), v.region(Point(22, 28)))
+        assertEquals(Point(23, 25), v.region(Point(22, 30)))
+        assertEquals(Point(23, 25), v.region(Point(22, 32)))
+        assertEquals(Point(29, 35), v.region(Point(22, 34)))
+        assertEquals(Point(16, 38), v.region(Point(22, 36)))
+        assertEquals(Point(17, 40), v.region(Point(22, 38)))
+        assertEquals(Point(17, 40), v.region(Point(22, 40)))
+        assertEquals(Point(20, 45), v.region(Point(22, 42)))
+        assertEquals(Point(20, 45), v.region(Point(22, 44)))
+        assertEquals(Point(20, 45), v.region(Point(22, 46)))
+        assertEquals(Point(20, 45), v.region(Point(22, 48)))
+        assertEquals(Point(26, 1), v.region(Point(24, 0)))
+        assertEquals(Point(26, 1), v.region(Point(24, 2)))
+        assertEquals(Point(26, 1), v.region(Point(24, 4)))
+        assertEquals(Point(24, 10), v.region(Point(24, 6)))
+        assertEquals(Point(24, 10), v.region(Point(24, 8)))
+        assertEquals(Point(24, 10), v.region(Point(24, 10)))
+        assertEquals(Point(23, 12), v.region(Point(24, 12)))
+        assertEquals(Point(23, 12), v.region(Point(24, 14)))
+        assertEquals(Point(23, 12), v.region(Point(24, 16)))
+        assertEquals(Point(27, 20), v.region(Point(24, 18)))
+        assertEquals(Point(27, 20), v.region(Point(24, 20)))
+        assertEquals(Point(23, 25), v.region(Point(24, 22)))
+        assertEquals(Point(23, 25), v.region(Point(24, 24)))
+        assertEquals(Point(23, 25), v.region(Point(24, 26)))
+        assertEquals(Point(23, 25), v.region(Point(24, 28)))
+        assertEquals(Point(23, 25), v.region(Point(24, 30)))
+        assertEquals(Point(29, 35), v.region(Point(24, 32)))
+        assertEquals(Point(29, 35), v.region(Point(24, 34)))
+        assertEquals(Point(29, 35), v.region(Point(24, 36)))
+        assertEquals(Point(29, 39), v.region(Point(24, 38)))
+        assertEquals(Point(29, 39), v.region(Point(24, 40)))
+        assertEquals(Point(20, 45), v.region(Point(24, 42)))
+        assertEquals(Point(20, 45), v.region(Point(24, 44)))
+        assertEquals(Point(20, 45), v.region(Point(24, 46)))
+        assertEquals(Point(20, 45), v.region(Point(24, 48)))
+        assertEquals(Point(26, 1), v.region(Point(26, 0)))
+        assertEquals(Point(26, 1), v.region(Point(26, 2)))
+        assertEquals(Point(26, 1), v.region(Point(26, 4)))
+        assertEquals(Point(24, 10), v.region(Point(26, 6)))
+        assertEquals(Point(24, 10), v.region(Point(26, 8)))
+        assertEquals(Point(24, 10), v.region(Point(26, 10)))
+        assertEquals(Point(24, 10), v.region(Point(26, 12)))
+        assertEquals(Point(23, 12), v.region(Point(26, 14)))
+        assertEquals(Point(27, 20), v.region(Point(26, 16)))
+        assertEquals(Point(27, 20), v.region(Point(26, 18)))
+        assertEquals(Point(27, 20), v.region(Point(26, 20)))
+        assertEquals(Point(27, 20), v.region(Point(26, 22)))
+        assertEquals(Point(23, 25), v.region(Point(26, 24)))
+        assertEquals(Point(23, 25), v.region(Point(26, 26)))
+        assertEquals(Point(23, 25), v.region(Point(26, 28)))
+        assertEquals(Point(29, 35), v.region(Point(26, 30)))
+        assertEquals(Point(29, 35), v.region(Point(26, 32)))
+        assertEquals(Point(29, 35), v.region(Point(26, 34)))
+        assertEquals(Point(29, 35), v.region(Point(26, 36)))
+        assertEquals(Point(29, 39), v.region(Point(26, 38)))
+        assertEquals(Point(29, 39), v.region(Point(26, 40)))
+        assertEquals(Point(29, 39), v.region(Point(26, 42)))
+        assertEquals(Point(29, 39), v.region(Point(26, 44)))
+        assertEquals(Point(20, 45), v.region(Point(26, 46)))
+        assertEquals(Point(20, 45), v.region(Point(26, 48)))
+        assertEquals(Point(26, 1), v.region(Point(28, 0)))
+        assertEquals(Point(26, 1), v.region(Point(28, 2)))
+        assertEquals(Point(26, 1), v.region(Point(28, 4)))
+        assertEquals(Point(32, 9), v.region(Point(28, 6)))
+        assertEquals(Point(32, 9), v.region(Point(28, 8)))
+        assertEquals(Point(24, 10), v.region(Point(28, 10)))
+        assertEquals(Point(24, 10), v.region(Point(28, 12)))
+        assertEquals(Point(23, 12), v.region(Point(28, 14)))
+        assertEquals(Point(29, 20), v.region(Point(28, 16)))
+        assertEquals(Point(29, 20), v.region(Point(28, 18)))
+        assertEquals(Point(29, 20), v.region(Point(28, 20)))
+        assertEquals(Point(29, 20), v.region(Point(28, 22)))
+        assertEquals(Point(29, 20), v.region(Point(28, 24)))
+        assertEquals(Point(23, 25), v.region(Point(28, 26)))
+        assertEquals(Point(23, 25), v.region(Point(28, 28)))
+        assertEquals(Point(29, 35), v.region(Point(28, 30)))
+        assertEquals(Point(29, 35), v.region(Point(28, 32)))
+        assertEquals(Point(29, 35), v.region(Point(28, 34)))
+        assertEquals(Point(29, 35), v.region(Point(28, 36)))
+        assertEquals(Point(29, 39), v.region(Point(28, 38)))
+        assertEquals(Point(29, 39), v.region(Point(28, 40)))
+        assertEquals(Point(29, 39), v.region(Point(28, 42)))
+        assertEquals(Point(32, 41), v.region(Point(28, 44)))
+        assertEquals(Point(32, 41), v.region(Point(28, 46)))
+        assertEquals(Point(32, 41), v.region(Point(28, 48)))
+        assertEquals(Point(26, 1), v.region(Point(30, 0)))
+        assertEquals(Point(26, 1), v.region(Point(30, 2)))
+        assertEquals(Point(26, 1), v.region(Point(30, 4)))
+        assertEquals(Point(32, 9), v.region(Point(30, 6)))
+        assertEquals(Point(32, 9), v.region(Point(30, 8)))
+        assertEquals(Point(32, 9), v.region(Point(30, 10)))
+        assertEquals(Point(32, 9), v.region(Point(30, 12)))
+        assertEquals(Point(32, 9), v.region(Point(30, 14)))
+        assertEquals(Point(29, 20), v.region(Point(30, 16)))
+        assertEquals(Point(29, 20), v.region(Point(30, 18)))
+        assertEquals(Point(29, 20), v.region(Point(30, 20)))
+        assertEquals(Point(29, 20), v.region(Point(30, 22)))
+        assertEquals(Point(29, 20), v.region(Point(30, 24)))
+        assertEquals(Point(29, 20), v.region(Point(30, 26)))
+        assertEquals(Point(29, 35), v.region(Point(30, 28)))
+        assertEquals(Point(29, 35), v.region(Point(30, 30)))
+        assertEquals(Point(29, 35), v.region(Point(30, 32)))
+        assertEquals(Point(29, 35), v.region(Point(30, 34)))
+        assertEquals(Point(29, 35), v.region(Point(30, 36)))
+        assertEquals(Point(29, 39), v.region(Point(30, 38)))
+        assertEquals(Point(29, 39), v.region(Point(30, 40)))
+        assertEquals(Point(32, 41), v.region(Point(30, 42)))
+        assertEquals(Point(32, 41), v.region(Point(30, 44)))
+        assertEquals(Point(32, 41), v.region(Point(30, 46)))
+        assertEquals(Point(32, 41), v.region(Point(30, 48)))
+        assertEquals(Point(26, 1), v.region(Point(32, 0)))
+        assertEquals(Point(26, 1), v.region(Point(32, 2)))
+        assertEquals(Point(32, 9), v.region(Point(32, 4)))
+        assertEquals(Point(32, 9), v.region(Point(32, 6)))
+        assertEquals(Point(32, 9), v.region(Point(32, 8)))
+        assertEquals(Point(32, 9), v.region(Point(32, 10)))
+        assertEquals(Point(32, 9), v.region(Point(32, 12)))
+        assertEquals(Point(32, 9), v.region(Point(32, 14)))
+        assertEquals(Point(29, 20), v.region(Point(32, 16)))
+        assertEquals(Point(29, 20), v.region(Point(32, 18)))
+        assertEquals(Point(34, 21), v.region(Point(32, 20)))
+        assertEquals(Point(34, 21), v.region(Point(32, 22)))
+        assertEquals(Point(34, 21), v.region(Point(32, 24)))
+        assertEquals(Point(34, 21), v.region(Point(32, 26)))
+        assertEquals(Point(34, 21), v.region(Point(32, 28)))
+        assertEquals(Point(29, 35), v.region(Point(32, 30)))
+        assertEquals(Point(29, 35), v.region(Point(32, 32)))
+        assertEquals(Point(29, 35), v.region(Point(32, 34)))
+        assertEquals(Point(29, 35), v.region(Point(32, 36)))
+        assertEquals(Point(32, 41), v.region(Point(32, 38)))
+        assertEquals(Point(32, 41), v.region(Point(32, 40)))
+        assertEquals(Point(32, 41), v.region(Point(32, 42)))
+        assertEquals(Point(32, 41), v.region(Point(32, 44)))
+        assertEquals(Point(32, 41), v.region(Point(32, 46)))
+        assertEquals(Point(32, 41), v.region(Point(32, 48)))
+        assertEquals(Point(41, 4), v.region(Point(34, 0)))
+        assertEquals(Point(32, 9), v.region(Point(34, 2)))
+        assertEquals(Point(32, 9), v.region(Point(34, 4)))
+        assertEquals(Point(32, 9), v.region(Point(34, 6)))
+        assertEquals(Point(32, 9), v.region(Point(34, 8)))
+        assertEquals(Point(32, 9), v.region(Point(34, 10)))
+        assertEquals(Point(36, 11), v.region(Point(34, 12)))
+        assertEquals(Point(36, 11), v.region(Point(34, 14)))
+        assertEquals(Point(34, 21), v.region(Point(34, 16)))
+        assertEquals(Point(34, 21), v.region(Point(34, 18)))
+        assertEquals(Point(34, 21), v.region(Point(34, 20)))
+        assertEquals(Point(34, 21), v.region(Point(34, 22)))
+        assertEquals(Point(34, 21), v.region(Point(34, 24)))
+        assertEquals(Point(34, 21), v.region(Point(34, 26)))
+        assertEquals(Point(40, 28), v.region(Point(34, 28)))
+        assertEquals(Point(37, 34), v.region(Point(34, 30)))
+        assertEquals(Point(37, 34), v.region(Point(34, 32)))
+        assertEquals(Point(37, 34), v.region(Point(34, 34)))
+        assertEquals(Point(37, 34), v.region(Point(34, 36)))
+        assertEquals(Point(37, 39), v.region(Point(34, 38)))
+        assertEquals(Point(32, 41), v.region(Point(34, 40)))
+        assertEquals(Point(32, 41), v.region(Point(34, 42)))
+        assertEquals(Point(32, 41), v.region(Point(34, 44)))
+        assertEquals(Point(32, 41), v.region(Point(34, 46)))
+        assertEquals(Point(32, 41), v.region(Point(34, 48)))
+        assertEquals(Point(41, 4), v.region(Point(36, 0)))
+        assertEquals(Point(41, 4), v.region(Point(36, 2)))
+        assertEquals(Point(41, 4), v.region(Point(36, 4)))
+        assertEquals(Point(32, 9), v.region(Point(36, 6)))
+        assertEquals(Point(36, 11), v.region(Point(36, 8)))
+        assertEquals(Point(36, 11), v.region(Point(36, 10)))
+        assertEquals(Point(36, 11), v.region(Point(36, 12)))
+        assertEquals(Point(36, 11), v.region(Point(36, 14)))
+        assertEquals(Point(39, 15), v.region(Point(36, 16)))
+        assertEquals(Point(34, 21), v.region(Point(36, 18)))
+        assertEquals(Point(34, 21), v.region(Point(36, 20)))
+        assertEquals(Point(34, 21), v.region(Point(36, 22)))
+        assertEquals(Point(34, 21), v.region(Point(36, 24)))
+        assertEquals(Point(40, 26), v.region(Point(36, 26)))
+        assertEquals(Point(40, 28), v.region(Point(36, 28)))
+        assertEquals(Point(37, 34), v.region(Point(36, 30)))
+        assertEquals(Point(37, 34), v.region(Point(36, 32)))
+        assertEquals(Point(37, 34), v.region(Point(36, 34)))
+        assertEquals(Point(37, 34), v.region(Point(36, 36)))
+        assertEquals(Point(37, 39), v.region(Point(36, 38)))
+        assertEquals(Point(37, 39), v.region(Point(36, 40)))
+        assertEquals(Point(37, 39), v.region(Point(36, 42)))
+        assertEquals(Point(32, 41), v.region(Point(36, 44)))
+        assertEquals(Point(32, 41), v.region(Point(36, 46)))
+        assertEquals(Point(32, 41), v.region(Point(36, 48)))
+        assertEquals(Point(41, 4), v.region(Point(38, 0)))
+        assertEquals(Point(41, 4), v.region(Point(38, 2)))
+        assertEquals(Point(41, 4), v.region(Point(38, 4)))
+        assertEquals(Point(41, 4), v.region(Point(38, 6)))
+        assertEquals(Point(36, 11), v.region(Point(38, 8)))
+        assertEquals(Point(36, 11), v.region(Point(38, 10)))
+        assertEquals(Point(36, 11), v.region(Point(38, 12)))
+        assertEquals(Point(39, 15), v.region(Point(38, 14)))
+        assertEquals(Point(39, 15), v.region(Point(38, 16)))
+        assertEquals(Point(39, 15), v.region(Point(38, 18)))
+        assertEquals(Point(34, 21), v.region(Point(38, 20)))
+        assertEquals(Point(34, 21), v.region(Point(38, 22)))
+        assertEquals(Point(40, 26), v.region(Point(38, 24)))
+        assertEquals(Point(40, 26), v.region(Point(38, 26)))
+        assertEquals(Point(40, 28), v.region(Point(38, 28)))
+        assertEquals(Point(40, 28), v.region(Point(38, 30)))
+        assertEquals(Point(37, 34), v.region(Point(38, 32)))
+        assertEquals(Point(37, 34), v.region(Point(38, 34)))
+        assertEquals(Point(37, 34), v.region(Point(38, 36)))
+        assertEquals(Point(37, 39), v.region(Point(38, 38)))
+        assertEquals(Point(37, 39), v.region(Point(38, 40)))
+        assertEquals(Point(37, 39), v.region(Point(38, 42)))
+        assertEquals(Point(37, 39), v.region(Point(38, 44)))
+        assertEquals(Point(37, 39), v.region(Point(38, 46)))
+        assertEquals(Point(44, 42), v.region(Point(38, 48)))
+        assertEquals(Point(41, 4), v.region(Point(40, 0)))
+        assertEquals(Point(41, 4), v.region(Point(40, 2)))
+        assertEquals(Point(41, 4), v.region(Point(40, 4)))
+        assertEquals(Point(41, 4), v.region(Point(40, 6)))
+        assertEquals(Point(42, 9), v.region(Point(40, 8)))
+        assertEquals(Point(42, 9), v.region(Point(40, 10)))
+        assertEquals(Point(39, 15), v.region(Point(40, 12)))
+        assertEquals(Point(39, 15), v.region(Point(40, 14)))
+        assertEquals(Point(39, 15), v.region(Point(40, 16)))
+        assertEquals(Point(39, 15), v.region(Point(40, 18)))
+        assertEquals(Point(39, 15), v.region(Point(40, 20)))
+        assertEquals(Point(40, 26), v.region(Point(40, 22)))
+        assertEquals(Point(40, 26), v.region(Point(40, 24)))
+        assertEquals(Point(40, 26), v.region(Point(40, 26)))
+        assertEquals(Point(40, 28), v.region(Point(40, 28)))
+        assertEquals(Point(40, 28), v.region(Point(40, 30)))
+        assertEquals(Point(41, 34), v.region(Point(40, 32)))
+        assertEquals(Point(41, 34), v.region(Point(40, 34)))
+        assertEquals(Point(42, 36), v.region(Point(40, 36)))
+        assertEquals(Point(42, 36), v.region(Point(40, 38)))
+        assertEquals(Point(37, 39), v.region(Point(40, 40)))
+        assertEquals(Point(44, 42), v.region(Point(40, 42)))
+        assertEquals(Point(44, 42), v.region(Point(40, 44)))
+        assertEquals(Point(44, 42), v.region(Point(40, 46)))
+        assertEquals(Point(44, 42), v.region(Point(40, 48)))
+        assertEquals(Point(41, 4), v.region(Point(42, 0)))
+        assertEquals(Point(41, 4), v.region(Point(42, 2)))
+        assertEquals(Point(41, 4), v.region(Point(42, 4)))
+        assertEquals(Point(41, 4), v.region(Point(42, 6)))
+        assertEquals(Point(42, 9), v.region(Point(42, 8)))
+        assertEquals(Point(42, 9), v.region(Point(42, 10)))
+        assertEquals(Point(42, 9), v.region(Point(42, 12)))
+        assertEquals(Point(39, 15), v.region(Point(42, 14)))
+        assertEquals(Point(39, 15), v.region(Point(42, 16)))
+        assertEquals(Point(39, 15), v.region(Point(42, 18)))
+        assertEquals(Point(45, 25), v.region(Point(42, 20)))
+        assertEquals(Point(45, 25), v.region(Point(42, 22)))
+        assertEquals(Point(40, 26), v.region(Point(42, 24)))
+        assertEquals(Point(40, 26), v.region(Point(42, 26)))
+        assertEquals(Point(40, 28), v.region(Point(42, 28)))
+        assertEquals(Point(43, 30), v.region(Point(42, 30)))
+        assertEquals(Point(41, 34), v.region(Point(42, 32)))
+        assertEquals(Point(41, 34), v.region(Point(42, 34)))
+        assertEquals(Point(42, 36), v.region(Point(42, 36)))
+        assertEquals(Point(42, 36), v.region(Point(42, 38)))
+        assertEquals(Point(44, 42), v.region(Point(42, 40)))
+        assertEquals(Point(44, 42), v.region(Point(42, 42)))
+        assertEquals(Point(44, 42), v.region(Point(42, 44)))
+        assertEquals(Point(44, 42), v.region(Point(42, 46)))
+        assertEquals(Point(44, 42), v.region(Point(42, 48)))
+        assertEquals(Point(41, 4), v.region(Point(44, 0)))
+        assertEquals(Point(41, 4), v.region(Point(44, 2)))
+        assertEquals(Point(41, 4), v.region(Point(44, 4)))
+        assertEquals(Point(47, 7), v.region(Point(44, 6)))
+        assertEquals(Point(42, 9), v.region(Point(44, 8)))
+        assertEquals(Point(42, 9), v.region(Point(44, 10)))
+        assertEquals(Point(42, 9), v.region(Point(44, 12)))
+        assertEquals(Point(39, 15), v.region(Point(44, 14)))
+        assertEquals(Point(39, 15), v.region(Point(44, 16)))
+        assertEquals(Point(39, 15), v.region(Point(44, 18)))
+        assertEquals(Point(45, 25), v.region(Point(44, 20)))
+        assertEquals(Point(45, 25), v.region(Point(44, 22)))
+        assertEquals(Point(45, 25), v.region(Point(44, 24)))
+        assertEquals(Point(44, 27), v.region(Point(44, 26)))
+        assertEquals(Point(44, 27), v.region(Point(44, 28)))
+        assertEquals(Point(43, 30), v.region(Point(44, 30)))
+        assertEquals(Point(43, 30), v.region(Point(44, 32)))
+        assertEquals(Point(42, 36), v.region(Point(44, 34)))
+        assertEquals(Point(42, 36), v.region(Point(44, 36)))
+        assertEquals(Point(42, 36), v.region(Point(44, 38)))
+        assertEquals(Point(44, 42), v.region(Point(44, 40)))
+        assertEquals(Point(44, 42), v.region(Point(44, 42)))
+        assertEquals(Point(44, 42), v.region(Point(44, 44)))
+        assertEquals(Point(44, 42), v.region(Point(44, 46)))
+        assertEquals(Point(44, 42), v.region(Point(44, 48)))
+        assertEquals(Point(41, 4), v.region(Point(46, 0)))
+        assertEquals(Point(47, 7), v.region(Point(46, 2)))
+        assertEquals(Point(47, 7), v.region(Point(46, 4)))
+        assertEquals(Point(47, 7), v.region(Point(46, 6)))
+        assertEquals(Point(47, 7), v.region(Point(46, 8)))
+        assertEquals(Point(47, 7), v.region(Point(46, 10)))
+        assertEquals(Point(42, 9), v.region(Point(46, 12)))
+        assertEquals(Point(42, 9), v.region(Point(46, 14)))
+        assertEquals(Point(39, 15), v.region(Point(46, 16)))
+        assertEquals(Point(45, 25), v.region(Point(46, 18)))
+        assertEquals(Point(45, 25), v.region(Point(46, 20)))
+        assertEquals(Point(45, 25), v.region(Point(46, 22)))
+        assertEquals(Point(45, 25), v.region(Point(46, 24)))
+        assertEquals(Point(45, 25), v.region(Point(46, 26)))
+        assertEquals(Point(47, 27), v.region(Point(46, 28)))
+        assertEquals(Point(43, 30), v.region(Point(46, 30)))
+        assertEquals(Point(43, 30), v.region(Point(46, 32)))
+        assertEquals(Point(42, 36), v.region(Point(46, 34)))
+        assertEquals(Point(42, 36), v.region(Point(46, 36)))
+        assertEquals(Point(44, 42), v.region(Point(46, 38)))
+        assertEquals(Point(44, 42), v.region(Point(46, 40)))
+        assertEquals(Point(44, 42), v.region(Point(46, 42)))
+        assertEquals(Point(44, 42), v.region(Point(46, 44)))
+        assertEquals(Point(44, 42), v.region(Point(46, 46)))
+        assertEquals(Point(44, 42), v.region(Point(46, 48)))
+        assertEquals(Point(47, 7), v.region(Point(48, 0)))
+        assertEquals(Point(47, 7), v.region(Point(48, 2)))
+        assertEquals(Point(47, 7), v.region(Point(48, 4)))
+        assertEquals(Point(47, 7), v.region(Point(48, 6)))
+        assertEquals(Point(47, 7), v.region(Point(48, 8)))
+        assertEquals(Point(47, 7), v.region(Point(48, 10)))
+        assertEquals(Point(47, 7), v.region(Point(48, 12)))
+        assertEquals(Point(47, 7), v.region(Point(48, 14)))
+        assertEquals(Point(39, 15), v.region(Point(48, 16)))
+        assertEquals(Point(45, 25), v.region(Point(48, 18)))
+        assertEquals(Point(45, 25), v.region(Point(48, 20)))
+        assertEquals(Point(45, 25), v.region(Point(48, 22)))
+        assertEquals(Point(45, 25), v.region(Point(48, 24)))
+        assertEquals(Point(47, 27), v.region(Point(48, 26)))
+        assertEquals(Point(47, 27), v.region(Point(48, 28)))
+        assertEquals(Point(47, 27), v.region(Point(48, 30)))
+        assertEquals(Point(47, 27), v.region(Point(48, 32)))
+        assertEquals(Point(42, 36), v.region(Point(48, 34)))
+        assertEquals(Point(42, 36), v.region(Point(48, 36)))
+        assertEquals(Point(44, 42), v.region(Point(48, 38)))
+        assertEquals(Point(44, 42), v.region(Point(48, 40)))
+        assertEquals(Point(44, 42), v.region(Point(48, 42)))
+        assertEquals(Point(44, 42), v.region(Point(48, 44)))
+        assertEquals(Point(44, 42), v.region(Point(48, 46)))
+        assertEquals(Point(44, 42), v.region(Point(48, 48)))
     }
 
     @Test
     fun testManhattanDistance() {
         val v = Voronoi(
-                listOf(
-                        Point(1, 6),
-                        Point(4, 3),
-                        Point(5, 3),
-                        Point(6, 8),
-                        Point(9, 6),
-                        Point(3, 3),
-                        Point(5, 1),
-                        Point(1, 0),
-                        Point(4, 3),
-                        Point(3, 6)
-                ), Point.MANHATTAN_DISTANCE_FUNC
+            listOf(
+                Point(1, 6),
+                Point(4, 3),
+                Point(5, 3),
+                Point(6, 8),
+                Point(9, 6),
+                Point(3, 3),
+                Point(5, 1),
+                Point(1, 0),
+                Point(4, 3),
+                Point(3, 6)
+            ), Point.MANHATTAN_DISTANCE_FUNC
         )
-        Assert.assertEquals(Point(1, 0), v.region(Point(0, 0)))
-        Assert.assertEquals(Point(1, 6), v.region(Point(0, 4)))
-        Assert.assertEquals(Point(1, 6), v.region(Point(0, 8)))
-        Assert.assertEquals(Point(5, 1), v.region(Point(4, 0)))
-        Assert.assertEquals(Point(4, 3), v.region(Point(4, 4)))
-        Assert.assertEquals(Point(6, 8), v.region(Point(4, 8)))
-        Assert.assertEquals(Point(5, 1), v.region(Point(8, 0)))
-        Assert.assertEquals(Point(9, 6), v.region(Point(8, 4)))
-        Assert.assertEquals(Point(6, 8), v.region(Point(8, 8)))
+        assertEquals(Point(1, 0), v.region(Point(0, 0)))
+        assertEquals(Point(1, 6), v.region(Point(0, 4)))
+        assertEquals(Point(1, 6), v.region(Point(0, 8)))
+        assertEquals(Point(5, 1), v.region(Point(4, 0)))
+        assertEquals(Point(4, 3), v.region(Point(4, 4)))
+        assertEquals(Point(6, 8), v.region(Point(4, 8)))
+        assertEquals(Point(5, 1), v.region(Point(8, 0)))
+        assertEquals(Point(9, 6), v.region(Point(8, 4)))
+        assertEquals(Point(6, 8), v.region(Point(8, 8)))
     }
 }
\ No newline at end of file
diff --git a/src/test/io/uuddlrlrba/ktalgs/geometry/convexhull/ConvexHullTest.kt b/src/test/io/uuddlrlrba/ktalgs/geometry/convexhull/ConvexHullTest.kt
index a2afabd..7665c23 100644
--- a/src/test/io/uuddlrlrba/ktalgs/geometry/convexhull/ConvexHullTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/geometry/convexhull/ConvexHullTest.kt
@@ -23,96 +23,97 @@
 package io.uuddlrlrba.ktalgs.geometry.convexhull
 
 import io.uuddlrlrba.ktalgs.geometry.Point
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
 
 abstract class ConvexHullTest(val strategy: ConvexHullAlgorithm) {
     @Test
     fun test1() {
         val points = arrayOf(
-                Point(1, 1),
-                Point(2, 5),
-                Point(3, 3),
-                Point(5, 3),
-                Point(3, 2),
-                Point(2, 2)
+            Point(1, 1),
+            Point(2, 5),
+            Point(3, 3),
+            Point(5, 3),
+            Point(3, 2),
+            Point(2, 2)
         )
         val expected = sortedSetOf(
-                Point(1, 1),
-                Point(2, 5),
-                Point(5, 3)
+            Point(1, 1),
+            Point(2, 5),
+            Point(5, 3)
         )
         val hull = strategy.convexHull(points)
-        Assert.assertEquals(expected, hull.toSortedSet())
+        assertEquals(expected, hull.toSortedSet())
     }
 
     @Test
     fun test2() {
         val points = arrayOf(
-                Point(3, 2),
-                Point(2, 5),
-                Point(4, 5)
+            Point(3, 2),
+            Point(2, 5),
+            Point(4, 5)
         )
         val expected = points.toSortedSet()
         val hull = strategy.convexHull(points)
-        Assert.assertEquals(expected, hull.toSortedSet())
+        assertEquals(expected, hull.toSortedSet())
     }
 
     @Test
     fun test3() {
         val points = arrayOf(
-                Point(0, 3),
-                Point(2, 2),
-                Point(1, 1),
-                Point(2, 1),
-                Point(3, 0),
-                Point(0, 0),
-                Point(3, 3)
+            Point(0, 3),
+            Point(2, 2),
+            Point(1, 1),
+            Point(2, 1),
+            Point(3, 0),
+            Point(0, 0),
+            Point(3, 3)
         )
         val expected = sortedSetOf(
-                Point(0, 3),
-                Point(3, 0),
-                Point(0, 0),
-                Point(3, 3)
+            Point(0, 3),
+            Point(3, 0),
+            Point(0, 0),
+            Point(3, 3)
         )
         val hull = strategy.convexHull(points)
-        Assert.assertEquals(expected, hull.toSortedSet())
+        assertEquals(expected, hull.toSortedSet())
     }
 
     @Test
     fun test4() {
         val expected = arrayOf(
-                Point(10, 3),
-                Point(8, 0),
-                Point(2, 0),
-                Point(0, 3),
-                Point(2, 6),
-                Point(8, 6)
+            Point(10, 3),
+            Point(8, 0),
+            Point(2, 0),
+            Point(0, 3),
+            Point(2, 6),
+            Point(8, 6)
         )
         val points = expected + arrayOf(
-                Point(3, 5),
-                Point(3, 3),
-                Point(6, 3),
-                Point(6, 3),
-                Point(7, 1),
-                Point(8, 4)
+            Point(3, 5),
+            Point(3, 3),
+            Point(6, 3),
+            Point(6, 3),
+            Point(7, 1),
+            Point(8, 4)
         )
         val hull = strategy.convexHull(points)
-        Assert.assertEquals(expected.toSortedSet(), hull.toSortedSet())
+        assertEquals(expected.toSortedSet(), hull.toSortedSet())
     }
 
-    @Test(expected= IllegalArgumentException::class)
+    @Test
     fun exceptionTest0() {
-        strategy.convexHull(emptyArray())
+        assertFailsWith<IllegalArgumentException> { strategy.convexHull(emptyArray()) }
     }
 
-    @Test(expected= IllegalArgumentException::class)
+    @Test
     fun exceptionTest1() {
-        strategy.convexHull(arrayOf(Point(0, 0)))
+        assertFailsWith<IllegalArgumentException> { strategy.convexHull(arrayOf(Point(0, 0))) }
     }
 
-    @Test(expected= IllegalArgumentException::class)
+    @Test
     fun exceptionTest2() {
-        strategy.convexHull(arrayOf(Point(0, 0), Point(1, 1)))
+        assertFailsWith<IllegalArgumentException> { strategy.convexHull(arrayOf(Point(0, 0), Point(1, 1))) }
     }
 }
\ No newline at end of file
diff --git a/src/test/io/uuddlrlrba/ktalgs/graphs/undirected/weighted/MSTTest.kt b/src/test/io/uuddlrlrba/ktalgs/graphs/undirected/weighted/MSTTest.kt
index bb14071..ff7bb5f 100644
--- a/src/test/io/uuddlrlrba/ktalgs/graphs/undirected/weighted/MSTTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/graphs/undirected/weighted/MSTTest.kt
@@ -22,10 +22,10 @@
 
 package io.uuddlrlrba.ktalgs.graphs.undirected.weighted
 
-import org.junit.Assert
-import org.junit.Test
 import java.net.URL
 import java.util.*
+import kotlin.test.Test
+import kotlin.test.assertEquals
 
 abstract class MSTTest(val strategy: (UWGraph) -> (MST)) {
     @Test
@@ -38,7 +38,7 @@ abstract class MSTTest(val strategy: (UWGraph) -> (MST)) {
         graph.addEdge(0, 1, 4.0)
         graph.addEdge(1, 3, 3.0)
         val mst = strategy(graph)
-        Assert.assertEquals(7.0, mst.weight(), 1e-12)
+        assertEquals(7.0, mst.weight(), 1e-12)
     }
 
     @Test
@@ -52,35 +52,35 @@ abstract class MSTTest(val strategy: (UWGraph) -> (MST)) {
         graph.addEdge(1, 4, 3.0)
         graph.addEdge(1, 3, 5.0)
         val mst = strategy(graph)
-        Assert.assertEquals(11.0, mst.weight(), 1e-12)
+        assertEquals(11.0, mst.weight(), 1e-12)
     }
 
     @Test
     fun test3() {
         val graph = readFromURL(URL("https://algs4.cs.princeton.edu/43mst/tinyEWG.txt"))
         val mst = strategy(graph)
-        Assert.assertEquals(1.81, mst.weight(), 1e-12)
+        assertEquals(1.81, mst.weight(), 1e-12)
     }
 
     @Test
     fun test4() {
         val graph = readFromURL(URL("https://algs4.cs.princeton.edu/43mst/mediumEWG.txt"))
         val mst = strategy(graph)
-        Assert.assertEquals(10.46351, mst.weight(), 1e-12)
+        assertEquals(10.46351, mst.weight(), 1e-12)
     }
 
     @Test
     fun test5() {
         val graph = readFromURL(URL("https://algs4.cs.princeton.edu/43mst/1000EWG.txt"))
         val mst = strategy(graph)
-        Assert.assertEquals(20.77320, mst.weight(), 1e-12)
+        assertEquals(20.77320, mst.weight(), 1e-12)
     }
 
     @Test
     fun test6() {
         val graph = readFromURL(URL("https://algs4.cs.princeton.edu/43mst/10000EWG.txt"))
         val mst = strategy(graph)
-        Assert.assertEquals(65.24072, mst.weight(), 1e-12)
+        assertEquals(65.24072, mst.weight(), 1e-12)
     }
 
     fun readFromURL(url: URL): UWGraph {
diff --git a/src/test/io/uuddlrlrba/ktalgs/math/BinomialTest.kt b/src/test/io/uuddlrlrba/ktalgs/math/BinomialTest.kt
index 871e89e..5941faf 100644
--- a/src/test/io/uuddlrlrba/ktalgs/math/BinomialTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/math/BinomialTest.kt
@@ -22,32 +22,32 @@
 
 package io.uuddlrlrba.ktalgs.math
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertEquals
 
 class BinomialTest {
     @Test
     fun test1() {
-        Assert.assertEquals(0, binomial(0, 1))
-        Assert.assertEquals(1, binomial(1, 1))
-        Assert.assertEquals(2, binomial(2, 1))
-        Assert.assertEquals(3, binomial(3, 1))
-        Assert.assertEquals(3, binomial(3, 2))
-        Assert.assertEquals(4, binomial(4, 1))
+        assertEquals(0, binomial(0, 1))
+        assertEquals(1, binomial(1, 1))
+        assertEquals(2, binomial(2, 1))
+        assertEquals(3, binomial(3, 1))
+        assertEquals(3, binomial(3, 2))
+        assertEquals(4, binomial(4, 1))
 
-        Assert.assertEquals(1, binomial(5, 0))
-        Assert.assertEquals(5, binomial(5, 1))
-        Assert.assertEquals(10, binomial(5, 2))
-        Assert.assertEquals(10, binomial(5, 3))
-        Assert.assertEquals(5, binomial(5, 4))
-        Assert.assertEquals(1, binomial(5, 5))
+        assertEquals(1, binomial(5, 0))
+        assertEquals(5, binomial(5, 1))
+        assertEquals(10, binomial(5, 2))
+        assertEquals(10, binomial(5, 3))
+        assertEquals(5, binomial(5, 4))
+        assertEquals(1, binomial(5, 5))
 
-        Assert.assertEquals(1, binomial(6, 0))
-        Assert.assertEquals(6, binomial(6, 1))
-        Assert.assertEquals(15, binomial(6, 2))
-        Assert.assertEquals(20, binomial(6, 3))
-        Assert.assertEquals(15, binomial(6, 4))
-        Assert.assertEquals(6, binomial(6, 5))
-        Assert.assertEquals(1, binomial(6, 6))
+        assertEquals(1, binomial(6, 0))
+        assertEquals(6, binomial(6, 1))
+        assertEquals(15, binomial(6, 2))
+        assertEquals(20, binomial(6, 3))
+        assertEquals(15, binomial(6, 4))
+        assertEquals(6, binomial(6, 5))
+        assertEquals(1, binomial(6, 6))
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/math/GcdKtTest.kt b/src/test/io/uuddlrlrba/ktalgs/math/GcdKtTest.kt
index d992e5b..d3ed401 100644
--- a/src/test/io/uuddlrlrba/ktalgs/math/GcdKtTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/math/GcdKtTest.kt
@@ -22,9 +22,8 @@
 
 package io.uuddlrlrba.ktalgs.math
 
-import org.junit.Test
-
-import org.junit.Assert.*
+import kotlin.test.Test
+import kotlin.test.assertEquals
 
 class GcdKtTest {
     @Test
diff --git a/src/test/io/uuddlrlrba/ktalgs/math/NewtonMethodKtTest.kt b/src/test/io/uuddlrlrba/ktalgs/math/NewtonMethodKtTest.kt
index 5b766b5..0a8a3da 100644
--- a/src/test/io/uuddlrlrba/ktalgs/math/NewtonMethodKtTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/math/NewtonMethodKtTest.kt
@@ -22,9 +22,10 @@
 
 package io.uuddlrlrba.ktalgs.math
 
-import org.junit.Test
-
-import org.junit.Assert.*
+import kotlin.math.absoluteValue
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
 
 class NewtonMethodKtTest {
     @Test
@@ -34,8 +35,8 @@ class NewtonMethodKtTest {
         assertEquals(2.toDouble(), sqrt(4.toDouble()), 1e-15)
         assertEquals(4.toDouble(), sqrt(16.toDouble()), 1e-12)
         for (i in 7 until 99) {
-            for (j in -15 until -1) {
-                assertEquals(sqrt(i.toDouble()), sqrt(i.toDouble()), j.toDouble())
+            for (j in 2 until 16) {
+                assertEquals(sqrt(i.toDouble()), sqrt(i.toDouble()), j.toDouble().absoluteValue)
             }
         }
     }
@@ -46,7 +47,7 @@ class NewtonMethodKtTest {
         assertEquals(2.toDouble(), sqrt(4), 1e-15)
         assertEquals(4.toDouble(), sqrt(16), 1e-12)
         for (i in 7 until 99) {
-            for (j in -15 until -1) {
+            for (j in 2 until 16) {
                 assertEquals(sqrt(i), sqrt(i), j.toDouble())
             }
         }
diff --git a/src/test/io/uuddlrlrba/ktalgs/search/AbstractSearchTest.kt b/src/test/io/uuddlrlrba/ktalgs/search/AbstractSearchTest.kt
index 557b647..93f12a1 100644
--- a/src/test/io/uuddlrlrba/ktalgs/search/AbstractSearchTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/search/AbstractSearchTest.kt
@@ -22,41 +22,41 @@
 
 package io.uuddlrlrba.ktalgs.search
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertEquals
 
 abstract class AbstractSearchTest<out T: AbstractSearchStrategy<Int>>(val strategy: T) {
     @Test
     fun emptyTest() {
-        Assert.assertEquals(-1, strategy.perform(emptyArray(), 1))
+        assertEquals(-1, strategy.perform(emptyArray(), 1))
     }
 
     @Test
     fun singletonTest() {
-        Assert.assertEquals(0, strategy.perform(arrayOf(1), 1))
-        Assert.assertEquals(-1, strategy.perform(arrayOf(1), 2))
+        assertEquals(0, strategy.perform(arrayOf(1), 1))
+        assertEquals(-1, strategy.perform(arrayOf(1), 2))
     }
 
     @Test
     fun twoElementsTest() {
-        Assert.assertEquals(0, strategy.perform(arrayOf(1, 2), 1))
-        Assert.assertEquals(1, strategy.perform(arrayOf(1, 2), 2))
-        Assert.assertEquals(-1, strategy.perform(arrayOf(1, 2), 3))
+        assertEquals(0, strategy.perform(arrayOf(1, 2), 1))
+        assertEquals(1, strategy.perform(arrayOf(1, 2), 2))
+        assertEquals(-1, strategy.perform(arrayOf(1, 2), 3))
     }
 
     @Test
     fun tenElementsTest() {
-        Assert.assertEquals(0, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 1))
-        Assert.assertEquals(1, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 2))
-        Assert.assertEquals(2, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 3))
-        Assert.assertEquals(3, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 4))
-        Assert.assertEquals(4, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 5))
-        Assert.assertEquals(5, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 6))
-        Assert.assertEquals(6, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 7))
-        Assert.assertEquals(7, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 8))
-        Assert.assertEquals(8, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 9))
-        Assert.assertEquals(9, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 10))
-        Assert.assertEquals(-1, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 0))
-        Assert.assertEquals(-1, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 11))
+        assertEquals(0, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 1))
+        assertEquals(1, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 2))
+        assertEquals(2, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 3))
+        assertEquals(3, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 4))
+        assertEquals(4, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 5))
+        assertEquals(5, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 6))
+        assertEquals(6, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 7))
+        assertEquals(7, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 8))
+        assertEquals(8, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 9))
+        assertEquals(9, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 10))
+        assertEquals(-1, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 0))
+        assertEquals(-1, strategy.perform(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), 11))
     }
 }
diff --git a/src/test/io/uuddlrlrba/ktalgs/sorts/AbstractSortTest.kt b/src/test/io/uuddlrlrba/ktalgs/sorts/AbstractSortTest.kt
index 0eeea73..7bffaf4 100644
--- a/src/test/io/uuddlrlrba/ktalgs/sorts/AbstractSortTest.kt
+++ b/src/test/io/uuddlrlrba/ktalgs/sorts/AbstractSortTest.kt
@@ -22,56 +22,56 @@
 
 package io.uuddlrlrba.ktalgs.sorts
 
-import org.junit.Assert
-import org.junit.Test
+import kotlin.test.Test
+import kotlin.test.assertContentEquals
 
 abstract class AbstractSortTest<out T: AbstractSortStrategy>(val strategy: T) {
     @Test
     fun emptyTest() {
         val arr = arrayOf<Int>()
         strategy.perform(arr)
-        Assert.assertArrayEquals(arrayOf<Int>(), arr)
+        assertContentEquals(arrayOf(), arr)
     }
 
     @Test
     fun singletonTest() {
         val arr = arrayOf(1)
         strategy.perform(arr)
-        Assert.assertArrayEquals(arrayOf(1), arr)
+        assertContentEquals(arrayOf(1), arr)
     }
 
     @Test
     fun twoElementsInOrderTest() {
         val arr = arrayOf(42, 43)
         strategy.perform(arr)
-        Assert.assertArrayEquals(arrayOf(42, 43), arr)
+        assertContentEquals(arrayOf(42, 43), arr)
     }
 
     @Test
     fun twoElementsOutOfOrderTest() {
         val arr = arrayOf(43, 42)
         strategy.perform(arr)
-        Assert.assertArrayEquals(arrayOf(42, 43), arr)
+        assertContentEquals(arrayOf(42, 43), arr)
     }
 
     @Test
     fun twoElementsEqualTest() {
         val arr = arrayOf(42, 42)
         strategy.perform(arr)
-        Assert.assertArrayEquals(arrayOf(42, 42), arr)
+        assertContentEquals(arrayOf(42, 42), arr)
     }
 
     @Test
     fun tenElementsReverseTest() {
         val arr = arrayOf(10, 9, 8, 7, 6, 5, 4, 3, 2, 1)
         strategy.perform(arr)
-        Assert.assertArrayEquals(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), arr)
+        assertContentEquals(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), arr)
     }
 
     @Test
     fun tenElementsTest() {
         val arr = arrayOf(3, 2, 7, 6, 1, 8, 10, 9, 4, 5)
         strategy.perform(arr)
-        Assert.assertArrayEquals(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), arr)
+        assertContentEquals(arrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), arr)
     }
 }