# File test/unit/assertions.rb, line 251
                        def assert_not_equal(expected, actual, message="")
                                _wrap_assertion {
                                        full_message = build_message(message, expected, actual) {
                                                | arg1, arg2 |
                                                "<#{arg1}> expected to be != to\n" +
                                                "<#{arg2}>"
                                        }
                                        assert_block(full_message) {
                                                expected != actual
                                        }
                                }
                        end