function assert_regexp_match(actual, expected, description) {
        /*
         * Test if a string (actual) matches a regexp (expected)
         */
        assert(expected.test(actual),
               "assert_regexp_match", description,
               "expected ${expected} but got ${actual}",
               {expected:expected, actual:actual});
    }
Assert that ``actual`` matches the RegExp ``expected``.

@param {String} actual - Test string.
@param {RegExp} expected - RegExp ``actual`` must match.
@param {string} [description] - Description of the condition being tested.