feature/type-conversions

OnixLabs.Core.UnitTests.Data/Disposable.cs

@@ -0,0 +1,31 @@
+// Copyright 2020 ONIXLabs
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+namespace OnixLabs.Core.UnitTests.Data;
+
+public sealed class Disposable : IDisposable, IAsyncDisposable
+{
+    public bool IsDisposed { get; private set; }
+
+    public void Dispose()
+    {
+        IsDisposed = true;
+    }
+
+    public async ValueTask DisposeAsync()
+    {
+        IsDisposed = true;
+        await ValueTask.CompletedTask;
+    }
+}

OnixLabs.Core.UnitTests.Data/InvalidFormatProvider.cs

@@ -0,0 +1,26 @@
+// Copyright 2020 ONIXLabs
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+namespace OnixLabs.Core.UnitTests.Data;
+
+public sealed class InvalidFormatProvider : IFormatProvider
+{
+    public static readonly InvalidFormatProvider Instance = new();
+
+    private InvalidFormatProvider()
+    {
+    }
+
+    public object? GetFormat(Type? formatType) => null;
+}

OnixLabs.Core.UnitTests.Data/OnixLabs.Core.UnitTests.Data.csproj

@@ -8,13 +8,13 @@
         <IsTestProject>false</IsTestProject>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
-        <PackageReference Include="xunit" Version="2.6.4"/>
-        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+        <PackageReference Include="xunit" Version="2.8.1" />
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="coverlet.collector" Version="6.0.0">
+        <PackageReference Include="coverlet.collector" Version="6.0.2">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>

OnixLabs.Core.UnitTests/EnumerationTests.cs

@@ -29,6 +29,8 @@ public void EnumerationsShouldBeEqual()
 
         // Then
         Assert.Equal(a, b);
+        Assert.True(a == b);
+        Assert.False(a != b);
     }
 
     [Fact(DisplayName = "Enumerations should not be equal")]
@@ -40,6 +42,8 @@ public void EnumerationsShouldNotBeEqual()
 
         // Then
         Assert.NotEqual(a, b);
+        Assert.True(a != b);
+        Assert.False(a == b);
     }
 
     [Fact(DisplayName = "Enumeration should return all enumeration instances")]
@@ -149,4 +153,18 @@ public void EnumerationCompareToAsObjectShouldReturnTheCorrectValue()
         // Then
         Assert.Equal(-1, actual);
     }
+
+    [Fact(DisplayName = "Enumeration.ToString should produce the expected result")]
+    public void EnumerationToStringShouldProduceExpectedResult()
+    {
+        // Given
+        const string expected = "Red";
+        Color red = Color.Red;
+
+        // When
+        string actual = red.ToString();
+
+        // Then
+        Assert.Equal(expected, actual);
+    }
 }

OnixLabs.Core.UnitTests/Linq/IEnumerableExtensionTests.cs

@@ -480,6 +480,76 @@ public void NoneShouldProduceExpectedResultFalseAll()
         Assert.False(result);
     }
 
+    [Fact(DisplayName = "IEnumerable.SequenceEqualOrNull should return true when the current and other enumerables are null.")]
+    public void SequenceEqualOrNullShouldReturnTrueWhenCurrentAndOtherEnumerablesAreNull()
+    {
+        // Given
+        IEnumerable<int>? enumerable = null;
+        IEnumerable<int>? other = null;
+
+        // When
+        bool result = enumerable.SequenceEqualOrNull(other);
+
+        // Then
+        Assert.True(result);
+    }
+
+    [Fact(DisplayName = "IEnumerable.SequenceEqualOrNull should return false when the current enumerable is not null and other enumerable is null.")]
+    public void SequenceEqualOrNullShouldReturnTrueWhenCurrentEnumerableIsNotNullAndOtherEnumerableIsNull()
+    {
+        // Given
+        IEnumerable<int> enumerable = [1, 2, 3];
+        IEnumerable<int>? other = null;
+
+        // When
+        bool result = enumerable.SequenceEqualOrNull(other);
+
+        // Then
+        Assert.False(result);
+    }
+
+    [Fact(DisplayName = "IEnumerable.SequenceEqualOrNull should return false when the current enumerable is null and other enumerable is not null.")]
+    public void SequenceEqualOrNullShouldReturnTrueWhenCurrentEnumerableIsNullAndOtherEnumerableIsNotNull()
+    {
+        // Given
+        IEnumerable<int>? enumerable = null;
+        IEnumerable<int> other = [1, 2, 3];
+
+        // When
+        bool result = enumerable.SequenceEqualOrNull(other);
+
+        // Then
+        Assert.False(result);
+    }
+
+    [Fact(DisplayName = "IEnumerable.SequenceEqualOrNull should return true when the current enumerable is equal to the other enumerable.")]
+    public void SequenceEqualOrNullShouldReturnTrueWhenCurrentEnumerableIsEqualToTheOtherEnumerable()
+    {
+        // Given
+        IEnumerable<int>? enumerable = [1, 2, 3];
+        IEnumerable<int> other = [1, 2, 3];
+
+        // When
+        bool result = enumerable.SequenceEqualOrNull(other);
+
+        // Then
+        Assert.True(result);
+    }
+
+    [Fact(DisplayName = "IEnumerable.SequenceEqualOrNull should return false when the current enumerable is not equal to the other enumerable.")]
+    public void SequenceEqualOrNullShouldReturnTrueWhenCurrentEnumerableIsNotEqualToTheOtherEnumerable()
+    {
+        // Given
+        IEnumerable<int>? enumerable = [1, 2, 3];
+        IEnumerable<int> other = [3, 2, 1];
+
+        // When
+        bool result = enumerable.SequenceEqualOrNull(other);
+
+        // Then
+        Assert.False(result);
+    }
+
     [Fact(DisplayName = "IEnumerable.SingleOrNone should return success none when the enumerable contains no elements.")]
     public void SingleOrNoneShouldReturnSuccessNoneWhenEnumerableContainsNoElements()
     {

OnixLabs.Core.UnitTests/ObjectExtensionTests.cs

@@ -50,6 +50,68 @@ public void IsWithinRangeExclusiveShouldProduceExpectedResult(int value, int min
         Assert.Equal(expected, actual);
     }
 
+    [Fact(DisplayName = "CompareToObject should produce zero if the current IComparable<T> is equal to the specified object.")]
+    public void CompareToObjectShouldProduceZeroIfTheCurrentIComparableIsEqualToTheSpecifiedObject()
+    {
+        // Given
+        const int expected = 0;
+
+        // When
+        int actual = 123.CompareToObject(123);
+
+        // Then
+        Assert.Equal(expected, actual);
+    }
+
+    [Fact(DisplayName = "CompareToObject should produce positive one if the specified object is null.")]
+    public void CompareToObjectShouldProducePositiveOneIfTheSpecifiedObjectIsNull()
+    {
+        // Given
+        const int expected = 1;
+
+        // When
+        int actual = 124.CompareToObject(null);
+
+        // Then
+        Assert.Equal(expected, actual);
+    }
+
+    [Fact(DisplayName = "CompareToObject should produce positive one if the current IComparable<T> greater than the specified object.")]
+    public void CompareToObjectShouldProducePositiveOneIfTheCurrentIComparableIsGreaterThanTheSpecifiedObject()
+    {
+        // Given
+        const int expected = 1;
+
+        // When
+        int actual = 124.CompareToObject(123);
+
+        // Then
+        Assert.Equal(expected, actual);
+    }
+
+    [Fact(DisplayName = "CompareToObject should produce negative one if the current IComparable<T> greater than the specified object.")]
+    public void CompareToObjectShouldProduceNegativeOneIfTheCurrentIComparableIsGreaterThanTheSpecifiedObject()
+    {
+        // Given
+        const int expected = -1;
+
+        // When
+        int actual = 122.CompareToObject(123);
+
+        // Then
+        Assert.Equal(expected, actual);
+    }
+
+    [Fact(DisplayName = "CompareToObject should throw ArgumentException if the specified object is of the incorrect type.")]
+    public void CompareToObjectShouldThrowArgumentExceptionIfSpecifiedObjectIsOfIncorrectType()
+    {
+        // When
+        Exception exception = Assert.Throws<ArgumentException>(() => 122.CompareToObject(123.456));
+
+        // Then
+        Assert.Equal("Object must be of type System.Int32 (Parameter 'obj')", exception.Message);
+    }
+
     [Fact(DisplayName = "ToRecordString should produce a record formatted string")]
     public void ToRecordStringShouldProduceExpectedResult()
     {

OnixLabs.Core.UnitTests/OnixLabs.Core.UnitTests.csproj

@@ -6,13 +6,13 @@
         <Nullable>enable</Nullable>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
-        <PackageReference Include="xunit" Version="2.6.4"/>
-        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+        <PackageReference Include="xunit" Version="2.8.1" />
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="coverlet.collector" Version="6.0.0">
+        <PackageReference Include="coverlet.collector" Version="6.0.2">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>

OnixLabs.Core.UnitTests/OptionalTests.cs

@@ -201,39 +201,51 @@ public void OptionalNoneExplicitOperatorShouldProduceExpectedResult()
     public void OptionalSomeValuesShouldBeConsideredEqual()
     {
         // Given
-        Optional<int> a = Optional<int>.Some(123);
-        Optional<int> b = Optional<int>.Some(123);
+        Some<int> a = Optional<int>.Some(123);
+        Some<int> b = Optional<int>.Some(123);
+        object bObject = b;
 
         // When / Then
         Assert.Equal(a, b);
-        Assert.True(a == b);
+        Assert.Equal(a, bObject);
         Assert.True(a.Equals(b));
+        Assert.True(a.Equals(bObject));
+        Assert.True(a == b);
+        Assert.False(a != b);
     }
 
     [Fact(DisplayName = "Optional Some values should not be considered equal.")]
     public void OptionalSomeValuesShouldNotBeConsideredEqual()
     {
         // Given
-        Optional<int> a = Optional<int>.Some(123);
-        Optional<int> b = Optional<int>.Some(456);
+        Some<int> a = Optional<int>.Some(123);
+        Some<int> b = Optional<int>.Some(456);
+        object bObject = b;
 
         // When / Then
         Assert.NotEqual(a, b);
-        Assert.True(a != b);
+        Assert.NotEqual(a, bObject);
         Assert.False(a.Equals(b));
+        Assert.False(a.Equals(bObject));
+        Assert.False(a == b);
+        Assert.True(a != b);
     }
 
     [Fact(DisplayName = "Optional None values should be considered equal.")]
     public void OptionalNoneValuesShouldBeConsideredEqual()
     {
         // Given
-        Optional<int> a = Optional<int>.None;
-        Optional<int> b = Optional<int>.None;
+        None<int> a = Optional<int>.None;
+        None<int> b = Optional<int>.None;
+        object bObject = b;
 
         // When / Then
         Assert.Equal(a, b);
-        Assert.True(a == b);
+        Assert.Equal(a, bObject);
         Assert.True(a.Equals(b));
+        Assert.True(a.Equals(bObject));
+        Assert.True(a == b);
+        Assert.False(a != b);
     }
 
     [Fact(DisplayName = "Optional Some and None values should not be considered equal.")]
@@ -242,11 +254,15 @@ public void OptionalSomeAndNoneValuesShouldNotBeConsideredEqual()
         // Given
         Optional<int> a = Optional<int>.Some(123);
         Optional<int> b = Optional<int>.None;
+        object bObject = b;
 
         // When / Then
         Assert.NotEqual(a, b);
-        Assert.True(a != b);
+        Assert.NotEqual(a, bObject);
         Assert.False(a.Equals(b));
+        Assert.False(a.Equals(bObject));
+        Assert.False(a == b);
+        Assert.True(a != b);
     }
 
     [Fact(DisplayName = "Optional Some.GetHashCode should produce the expected result.")]
@@ -317,7 +333,8 @@ public void OptionalSomeGetValueOrDefaultWithDefaultValueShouldProduceExpectedRe
         Optional<string> text = "abc";
 
         // When
-        int actualNumber = number.GetValueOrDefault(456);
+        int? actualNumber = number.GetValueOrDefault(456);
+        // ReSharper disable once VariableCanBeNotNullable
         string? actualText = text.GetValueOrDefault("xyz");
 
         // Then