function assert_not_equals(actual, expected, description)
    {
        assert(!same_value(actual, expected), "assert_not_equals", description,
                                              "got disallowed value ${actual}",
                                              {actual:actual});
    }
Assert that ``actual`` is not the same value as ``expected``.

Comparison is as for :js:func:`assert_equals`.

@param {Any} actual - Test value.
@param {Any} expected - The value ``actual`` is expected to be different to.
@param {string} [description] - Description of the condition being tested.