Function assert_implements

test/fixtures/wpt/resources/testharness.js:2686–2688

* Assert that a feature is implemented, based on a 'truthy' condition. * * This function should be used to early-exit from tests in which there is * no point continuing without support for a non-optional spec or spec * feature. For example: * * assert_implements(win

(condition, description)

     * @param {string} [description] Error description for the case that the condition is not truthy.
     */
    function assert_implements(condition, description) {
        assert(!!condition, "assert_implements", description);
    }
    expose_assert(assert_implements, "assert_implements");

    /**