Add test verifying fix of #4577 (via jackson-core/1308) (#4578)

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -15,6 +15,9 @@ Project: jackson-databind
 #4575: StdDelegatingSerializer does not consider a Converter that may
   return null for a non-null input
  (reported, fix contributed by Peter L)
+#4577: Cannot deserialize value of type `java.math.BigDecimal` from
+   String "3." (not a valid representation)
+ (reported by @dmelisso)
 
 2.17.1 (04-May-2024)
 

src/test/java/com/fasterxml/jackson/databind/deser/jdk/BigNumbersDeserTest.java

@@ -106,24 +106,23 @@ public void testBigIntegerUnlimited() throws Exception
     @Test
     public void testNumberStartingWithDot() throws Exception {
         _testNumberWith(".555555555555555555555555555555");
-    }
-
-    // [databind#4435]
-    @Test
-    public void testNumberStartingWithMinusDot() throws Exception {
         _testNumberWith("-.555555555555555555555555555555");
+        _testNumberWith("+.555555555555555555555555555555");
     }
 
-    // [databind#4435]
+    // [databind#4577]
     @Test
-    public void testNumberStartingWithPlusDot() throws Exception {
-        _testNumberWith("+.555555555555555555555555555555");
+    public void testNumberEndingWithDot() throws Exception {
+        _testNumberWith("55.");
+        _testNumberWith("-55.");
+        _testNumberWith("+55.");
     }
-
+    
     private void _testNumberWith(String num) throws Exception
     {
+        BigDecimal exp = new BigDecimal(num);
         BigDecimalWrapper w = MAPPER.readValue("{\"number\":\"" + num + "\"}", BigDecimalWrapper.class);
-        assertEquals(new BigDecimal(num), w.number);
+        assertEquals(exp, w.number);
     }
 
     private String generateJson(final String fieldName) {