Move promise_test and assert_promise_rejects out of worker-test-harness.

LayoutTests/http/tests/serviceworker/resources/worker-test-harness.js

-/*
- * worker-test-harness should be considered a temporary polyfill around
- * testharness.js for supporting Service Worker based tests. It should not be
- * necessary once the test harness is able to drive worker based tests natively.
- * See https://github.com/w3c/testharness.js/pull/82 for status of effort to
- * update upstream testharness.js. Once the upstreaming is complete, tests that
- * reference worker-test-harness should be updated to directly import
- * testharness.js.
- */
-
-// The following are necessary to appease attempts by testharness to access the
-// DOM.
-self.document = {getElementsByTagName: function() { return []; }};
-self.window = self;
-self.parent = self;
-
-// An onload event handler is used to indicate to the testharness that the
-// document has finished loading. At this point the test suite would be
-// considered complete if there are no more pending tests and the test isn't
-// marked as requring an explicit done() call.
-//
-// Since ServiceWorkers don't have an onload event, we monkey-patch
-// addEventListener to rewire the event to be fired at oninstall which is
-// functionally equivalent to onload.
-(function() {
-  var previous_addEventListener = self.addEventListener;
-  self.addEventListener = function() {
-    if (arguments.length > 0 && arguments[0] == 'load') {
-      arguments[0] = 'install';
-    }
-    previous_addEventListener.apply(this, arguments);
-  };
-})();
-
-importScripts('/resources/testharness.js');
-
-(function() {
-  // This prevents the worker from attempting to display test results using the
-  // DOM.
-  setup({output: false});
-
-  // Once the test are considered complete, this logic packages up all the
-  // results into a promise resolution so that it can be passed back to the
-  // client document when it connects.
-  var completion_promise = new Promise(function(resolve, reject) {
-      add_completion_callback(function(tests, harness_status) {
-          var results = {
-            tests: tests.map(function(test) {
-                return test.structured_clone();
-              }),
-            status: harness_status.structured_clone()
-          };
-          resolve(results);
-        });
-    });
-
-  // The 'fetch_results' message is sent by the client document to signal that
-  // it is now ready to receive test results. It also includes a MessagePort
-  // which the worker should use to communicate.
-  self.addEventListener('message', function(ev) {
-      var message = ev.data;
-      if (message.type == 'fetch_results') {
-        var port = ev.ports[0];
-        completion_promise.then(function(results) {
-            var message = {
-              type: 'complete',
-              tests: results.tests,
-              status: results.status
-            };
-            port.postMessage(message);
-          });
-      }
-    });
-})();
-
-// 'promise_test' is a new kind of testharness test that handles some
-// boilerplate for testing with promises.
-function promise_test(func, name, properties) {
-  properties = properties || {};
-  var test = async_test(name, properties);
-  Promise.resolve(test.step(func, test, test))
-    .then(function() { test.done(); })
-    .catch(test.step_func(function(value) {
-        throw value;
-      }));
-}
-
-// Returns a promise that fulfills after the provided |promise| is fulfilled.
-// The |test| succeeds only if |promise| rejects with an exception matching
-// |code|. Accepted values for |code| follow those accepted for assert_throws().
-// The optional |description| describes the test being performed.
-// E.g.:
-//   assert_promise_rejects(
-//       new Promise(...), // something that should throw an exception.
-//       'NotFoundError',
-//       'Should throw NotFoundError.');
-//
-//   assert_promise_rejects(
-//       new Promise(...),
-//       new TypeError(),
-//       'Should throw TypeError');
-function assert_promise_rejects(promise, code, description) {
-  return promise.then(
-    function() {
-      throw 'assert_promise_rejects: ' + description + ' Promise did not throw.';
-    },
-    function(e) {
-      if (code !== undefined) {
-        assert_throws(code, function() { throw e; }, description);
-      }
-    });
-}