Added supporting for comparing CharSequence objects. Added tests.

src/main/java/org/junit/Assert.java

@@ -648,6 +648,36 @@ public static void assertEquals(String message, long expected, long actual) {
         }
     }
 
+    /**
+     * Asserts that two CharSequence instances are equal. If they are not, an
+     * {@link AssertionError} is thrown with the given message.
+     *
+     * @param message  the identifying message for the {@link AssertionError} (<code>null</code>
+     *                 okay)
+     * @param expected CharSequence expected value.
+     * @param actual   CharSequence actual value
+     */
+    public static void assertEquals(String message, CharSequence expected, CharSequence actual) {
+        boolean isContentEqual = actual.length() == expected.length()
+                && expected.toString().equals(actual.toString());
+        if (isContentEqual) {
+            return;
+        } else {
+            failNotEquals(message, expected, actual);
+        }
+    }
+
+    /**
+     * Asserts that two CharSequence instances are equal. If they are not, an
+     * {@link AssertionError} is thrown with the given message.
+     *
+     * @param expected CharSequence expected value.
+     * @param actual   CharSequence actual value
+     */
+    public static void assertEquals(CharSequence expected, CharSequence actual) {
+        assertEquals(null, expected, actual);
+    }
+
     /**
      * @deprecated Use
      *             <code>assertEquals(double expected, double actual, double delta)</code>

src/test/java/org/junit/tests/assertion/AssertionTest.java

@@ -396,6 +396,56 @@ public void arraysEqualWithMessage() {
         assertArrayEquals("equal", objects1, objects2);
     }
 
+    @Test
+    public void StringContentShouldBeEqualsCharSeqContent() {
+        String content = "abc";
+        CharSequence seqContent = "abc";
+        Assert.assertEquals(content, seqContent);
+    }
+
+    @Test
+    public void StringBuilderContentShouldBeEqualsCharSeqContent() {
+        StringBuilder builder = new StringBuilder();
+        builder.append("abc");
+        CharSequence seqContent = "abc";
+        Assert.assertEquals(builder, seqContent);
+    }
+
+    @Test
+    public void StringContentShouldBeEqualsStringBuilderContent() {
+        StringBuilder builder = new StringBuilder();
+        builder.append("abc");
+        String content = "abc";
+        String contentObj = new String("abc");
+        Assert.assertEquals(builder, content);
+        Assert.assertEquals(builder, contentObj);
+    }
+
+    @Test
+    public void StringContentShouldNotBeEqualsCharSeqContent() {
+        String content = "abc";
+        CharSequence seqContent = "abc1";
+        Assert.assertNotEquals(content, seqContent);
+    }
+
+    @Test
+    public void StringContentShouldNotBeEqualsStringBuilderContent() {
+        StringBuilder builder = new StringBuilder();
+        builder.append("abc1");
+        String content = "abc";
+        String contentObj = new String("abc");
+        Assert.assertNotEquals(builder, content);
+        Assert.assertNotEquals(builder, contentObj);
+    }
+
+    @Test
+    public void CharSequenceObjEqualWithMessage() {
+        String content = "abc";
+        CharSequence seqContent = "abc";
+        Assert.assertEquals("equal", content, seqContent);
+    }
+
+
     @Test
     public void equals() {
         Object o = new Object();