Implement Verify.assertNotInstanceOf. #28

Signed-off-by: Bhavana <bhavana.hindupur@gmail.com>

eclipse-collections-testutils/src/main/java/org/eclipse/collections/impl/test/Verify.java

@@ -785,6 +785,39 @@ public static void assertInstanceOf(String objectName, Class<?> expectedClassTyp
         }
     }
 
+    /**
+     * Assert that the given object is not an instanceof expectedClassType.
+     */
+    public static void assertNotInstanceOf(Class<?> expectedClassType, Object actualObject)
+    {
+        try
+        {
+            Verify.assertNotInstanceOf(actualObject.getClass().getName(), expectedClassType, actualObject);
+        }
+        catch (AssertionError e)
+        {
+            Verify.throwMangledException(e);
+        }
+    }
+
+    /**
+     * Assert that the given object is not an instanceof expectedClassType.
+     */
+    public static void assertNotInstanceOf(String objectName, Class<?> expectedClassType, Object actualObject)
+    {
+        try
+        {
+            if (expectedClassType.isInstance(actualObject))
+            {
+                Assert.fail(objectName + " is an instance of " + expectedClassType.getName());
+            }
+        }
+        catch (AssertionError e)
+        {
+            Verify.throwMangledException(e);
+        }
+    }
+
     /**
      * Assert that the given {@link Map} is empty.
      */

eclipse-collections-testutils/src/test/java/org/eclipse/collections/impl/test/VerifyTest.java

@@ -672,6 +672,22 @@ public void assertInstanceOf()
         }
     }
 
+    @Test
+    public void assertNotInstanceOf()
+    {
+        Verify.assertNotInstanceOf(Integer.class, 1L);
+
+        try
+        {
+            Verify.assertNotInstanceOf(Integer.class, 1);
+            Assert.fail();
+        }
+        catch (AssertionError e)
+        {
+            Verify.assertContains(VerifyTest.class.getName(), e.getStackTrace()[0].toString());
+        }
+    }
+
     @Test
     public void assertSortedSetsEqual()
     {