Introduce missing assertEquals(long, Long, String) overload

This reinstates a method that was introduced in
80e02ff but accidentally replaced in
89dc584.

testng-asserts/src/main/java/org/testng/Assert.java

@@ -968,6 +968,18 @@ public static void assertEquals(Long actual, long expected, String message) {
     assertEquals(actual, Long.valueOf(expected), message);
   }
 
+  /**
+   * Asserts that two longs are equal. If they are not, an AssertionError, with the given message,
+   * is thrown.
+   *
+   * @param actual the actual value
+   * @param expected the expected value
+   * @param message the assertion error message
+   */
+  public static void assertEquals(long actual, Long expected, String message) {
+    assertEquals(Long.valueOf(actual), expected, message);
+  }
+
   /**
    * Asserts that two longs are equal. If they are not, an AssertionError, with the given message,
    * is thrown.

testng-asserts/src/test/java/test/asserttests/AssertTest.java

@@ -51,6 +51,7 @@ public void assertEqualsBoxedUnboxedLong() {
     assertEquals(a, b);
     assertEquals(a, b, "");
     assertEquals(b, a);
+    assertEquals(b, a, "");
     assertEquals(Long.valueOf(b), a, "");
   }