summaryrefslogtreecommitdiffstats
path: root/testing/web-platform/tests/resources/testharness.js
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/resources/testharness.js
parentInitial commit. (diff)
downloadfirefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz
firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/resources/testharness.js')
-rw-r--r--testing/web-platform/tests/resources/testharness.js4933
1 files changed, 4933 insertions, 0 deletions
diff --git a/testing/web-platform/tests/resources/testharness.js b/testing/web-platform/tests/resources/testharness.js
new file mode 100644
index 0000000000..413993089b
--- /dev/null
+++ b/testing/web-platform/tests/resources/testharness.js
@@ -0,0 +1,4933 @@
+/*global self*/
+/*jshint latedef: nofunc*/
+
+/* Documentation: https://web-platform-tests.org/writing-tests/testharness-api.html
+ * (../docs/_writing-tests/testharness-api.md) */
+
+(function (global_scope)
+{
+ // default timeout is 10 seconds, test can override if needed
+ var settings = {
+ output:true,
+ harness_timeout:{
+ "normal":10000,
+ "long":60000
+ },
+ test_timeout:null,
+ message_events: ["start", "test_state", "result", "completion"],
+ debug: false,
+ };
+
+ var xhtml_ns = "http://www.w3.org/1999/xhtml";
+
+ /*
+ * TestEnvironment is an abstraction for the environment in which the test
+ * harness is used. Each implementation of a test environment has to provide
+ * the following interface:
+ *
+ * interface TestEnvironment {
+ * // Invoked after the global 'tests' object has been created and it's
+ * // safe to call add_*_callback() to register event handlers.
+ * void on_tests_ready();
+ *
+ * // Invoked after setup() has been called to notify the test environment
+ * // of changes to the test harness properties.
+ * void on_new_harness_properties(object properties);
+ *
+ * // Should return a new unique default test name.
+ * DOMString next_default_test_name();
+ *
+ * // Should return the test harness timeout duration in milliseconds.
+ * float test_timeout();
+ * };
+ */
+
+ /*
+ * A test environment with a DOM. The global object is 'window'. By default
+ * test results are displayed in a table. Any parent windows receive
+ * callbacks or messages via postMessage() when test events occur. See
+ * apisample11.html and apisample12.html.
+ */
+ function WindowTestEnvironment() {
+ this.name_counter = 0;
+ this.window_cache = null;
+ this.output_handler = null;
+ this.all_loaded = false;
+ var this_obj = this;
+ this.message_events = [];
+ this.dispatched_messages = [];
+
+ this.message_functions = {
+ start: [add_start_callback, remove_start_callback,
+ function (properties) {
+ this_obj._dispatch("start_callback", [properties],
+ {type: "start", properties: properties});
+ }],
+
+ test_state: [add_test_state_callback, remove_test_state_callback,
+ function(test) {
+ this_obj._dispatch("test_state_callback", [test],
+ {type: "test_state",
+ test: test.structured_clone()});
+ }],
+ result: [add_result_callback, remove_result_callback,
+ function (test) {
+ this_obj.output_handler.show_status();
+ this_obj._dispatch("result_callback", [test],
+ {type: "result",
+ test: test.structured_clone()});
+ }],
+ completion: [add_completion_callback, remove_completion_callback,
+ function (tests, harness_status, asserts) {
+ var cloned_tests = map(tests, function(test) {
+ return test.structured_clone();
+ });
+ this_obj._dispatch("completion_callback", [tests, harness_status],
+ {type: "complete",
+ tests: cloned_tests,
+ status: harness_status.structured_clone(),
+ asserts: asserts.map(assert => assert.structured_clone())});
+ }]
+ }
+
+ on_event(window, 'load', function() {
+ this_obj.all_loaded = true;
+ });
+
+ on_event(window, 'message', function(event) {
+ if (event.data && event.data.type === "getmessages" && event.source) {
+ // A window can post "getmessages" to receive a duplicate of every
+ // message posted by this environment so far. This allows subscribers
+ // from fetch_tests_from_window to 'catch up' to the current state of
+ // this environment.
+ for (var i = 0; i < this_obj.dispatched_messages.length; ++i)
+ {
+ event.source.postMessage(this_obj.dispatched_messages[i], "*");
+ }
+ }
+ });
+ }
+
+ WindowTestEnvironment.prototype._dispatch = function(selector, callback_args, message_arg) {
+ this.dispatched_messages.push(message_arg);
+ this._forEach_windows(
+ function(w, same_origin) {
+ if (same_origin) {
+ try {
+ var has_selector = selector in w;
+ } catch(e) {
+ // If document.domain was set at some point same_origin can be
+ // wrong and the above will fail.
+ has_selector = false;
+ }
+ if (has_selector) {
+ try {
+ w[selector].apply(undefined, callback_args);
+ } catch (e) {}
+ }
+ }
+ if (w !== self) {
+ w.postMessage(message_arg, "*");
+ }
+ });
+ };
+
+ WindowTestEnvironment.prototype._forEach_windows = function(callback) {
+ // Iterate over the windows [self ... top, opener]. The callback is passed
+ // two objects, the first one is the window object itself, the second one
+ // is a boolean indicating whether or not it's on the same origin as the
+ // current window.
+ var cache = this.window_cache;
+ if (!cache) {
+ cache = [[self, true]];
+ var w = self;
+ var i = 0;
+ var so;
+ while (w != w.parent) {
+ w = w.parent;
+ so = is_same_origin(w);
+ cache.push([w, so]);
+ i++;
+ }
+ w = window.opener;
+ if (w) {
+ cache.push([w, is_same_origin(w)]);
+ }
+ this.window_cache = cache;
+ }
+
+ forEach(cache,
+ function(a) {
+ callback.apply(null, a);
+ });
+ };
+
+ WindowTestEnvironment.prototype.on_tests_ready = function() {
+ var output = new Output();
+ this.output_handler = output;
+
+ var this_obj = this;
+
+ add_start_callback(function (properties) {
+ this_obj.output_handler.init(properties);
+ });
+
+ add_test_state_callback(function(test) {
+ this_obj.output_handler.show_status();
+ });
+
+ add_result_callback(function (test) {
+ this_obj.output_handler.show_status();
+ });
+
+ add_completion_callback(function (tests, harness_status, asserts_run) {
+ this_obj.output_handler.show_results(tests, harness_status, asserts_run);
+ });
+ this.setup_messages(settings.message_events);
+ };
+
+ WindowTestEnvironment.prototype.setup_messages = function(new_events) {
+ var this_obj = this;
+ forEach(settings.message_events, function(x) {
+ var current_dispatch = this_obj.message_events.indexOf(x) !== -1;
+ var new_dispatch = new_events.indexOf(x) !== -1;
+ if (!current_dispatch && new_dispatch) {
+ this_obj.message_functions[x][0](this_obj.message_functions[x][2]);
+ } else if (current_dispatch && !new_dispatch) {
+ this_obj.message_functions[x][1](this_obj.message_functions[x][2]);
+ }
+ });
+ this.message_events = new_events;
+ }
+
+ WindowTestEnvironment.prototype.next_default_test_name = function() {
+ var suffix = this.name_counter > 0 ? " " + this.name_counter : "";
+ this.name_counter++;
+ return get_title() + suffix;
+ };
+
+ WindowTestEnvironment.prototype.on_new_harness_properties = function(properties) {
+ this.output_handler.setup(properties);
+ if (properties.hasOwnProperty("message_events")) {
+ this.setup_messages(properties.message_events);
+ }
+ };
+
+ WindowTestEnvironment.prototype.add_on_loaded_callback = function(callback) {
+ on_event(window, 'load', callback);
+ };
+
+ WindowTestEnvironment.prototype.test_timeout = function() {
+ var metas = document.getElementsByTagName("meta");
+ for (var i = 0; i < metas.length; i++) {
+ if (metas[i].name == "timeout") {
+ if (metas[i].content == "long") {
+ return settings.harness_timeout.long;
+ }
+ break;
+ }
+ }
+ return settings.harness_timeout.normal;
+ };
+
+ /*
+ * Base TestEnvironment implementation for a generic web worker.
+ *
+ * Workers accumulate test results. One or more clients can connect and
+ * retrieve results from a worker at any time.
+ *
+ * WorkerTestEnvironment supports communicating with a client via a
+ * MessagePort. The mechanism for determining the appropriate MessagePort
+ * for communicating with a client depends on the type of worker and is
+ * implemented by the various specializations of WorkerTestEnvironment
+ * below.
+ *
+ * A client document using testharness can use fetch_tests_from_worker() to
+ * retrieve results from a worker. See apisample16.html.
+ */
+ function WorkerTestEnvironment() {
+ this.name_counter = 0;
+ this.all_loaded = true;
+ this.message_list = [];
+ this.message_ports = [];
+ }
+
+ WorkerTestEnvironment.prototype._dispatch = function(message) {
+ this.message_list.push(message);
+ for (var i = 0; i < this.message_ports.length; ++i)
+ {
+ this.message_ports[i].postMessage(message);
+ }
+ };
+
+ // The only requirement is that port has a postMessage() method. It doesn't
+ // have to be an instance of a MessagePort, and often isn't.
+ WorkerTestEnvironment.prototype._add_message_port = function(port) {
+ this.message_ports.push(port);
+ for (var i = 0; i < this.message_list.length; ++i)
+ {
+ port.postMessage(this.message_list[i]);
+ }
+ };
+
+ WorkerTestEnvironment.prototype.next_default_test_name = function() {
+ var suffix = this.name_counter > 0 ? " " + this.name_counter : "";
+ this.name_counter++;
+ return get_title() + suffix;
+ };
+
+ WorkerTestEnvironment.prototype.on_new_harness_properties = function() {};
+
+ WorkerTestEnvironment.prototype.on_tests_ready = function() {
+ var this_obj = this;
+ add_start_callback(
+ function(properties) {
+ this_obj._dispatch({
+ type: "start",
+ properties: properties,
+ });
+ });
+ add_test_state_callback(
+ function(test) {
+ this_obj._dispatch({
+ type: "test_state",
+ test: test.structured_clone()
+ });
+ });
+ add_result_callback(
+ function(test) {
+ this_obj._dispatch({
+ type: "result",
+ test: test.structured_clone()
+ });
+ });
+ add_completion_callback(
+ function(tests, harness_status, asserts) {
+ this_obj._dispatch({
+ type: "complete",
+ tests: map(tests,
+ function(test) {
+ return test.structured_clone();
+ }),
+ status: harness_status.structured_clone(),
+ asserts: asserts.map(assert => assert.structured_clone()),
+ });
+ });
+ };
+
+ WorkerTestEnvironment.prototype.add_on_loaded_callback = function() {};
+
+ WorkerTestEnvironment.prototype.test_timeout = function() {
+ // Tests running in a worker don't have a default timeout. I.e. all
+ // worker tests behave as if settings.explicit_timeout is true.
+ return null;
+ };
+
+ /*
+ * Dedicated web workers.
+ * https://html.spec.whatwg.org/multipage/workers.html#dedicatedworkerglobalscope
+ *
+ * This class is used as the test_environment when testharness is running
+ * inside a dedicated worker.
+ */
+ function DedicatedWorkerTestEnvironment() {
+ WorkerTestEnvironment.call(this);
+ // self is an instance of DedicatedWorkerGlobalScope which exposes
+ // a postMessage() method for communicating via the message channel
+ // established when the worker is created.
+ this._add_message_port(self);
+ }
+ DedicatedWorkerTestEnvironment.prototype = Object.create(WorkerTestEnvironment.prototype);
+
+ DedicatedWorkerTestEnvironment.prototype.on_tests_ready = function() {
+ WorkerTestEnvironment.prototype.on_tests_ready.call(this);
+ // In the absence of an onload notification, we a require dedicated
+ // workers to explicitly signal when the tests are done.
+ tests.wait_for_finish = true;
+ };
+
+ /*
+ * Shared web workers.
+ * https://html.spec.whatwg.org/multipage/workers.html#sharedworkerglobalscope
+ *
+ * This class is used as the test_environment when testharness is running
+ * inside a shared web worker.
+ */
+ function SharedWorkerTestEnvironment() {
+ WorkerTestEnvironment.call(this);
+ var this_obj = this;
+ // Shared workers receive message ports via the 'onconnect' event for
+ // each connection.
+ self.addEventListener("connect",
+ function(message_event) {
+ this_obj._add_message_port(message_event.source);
+ }, false);
+ }
+ SharedWorkerTestEnvironment.prototype = Object.create(WorkerTestEnvironment.prototype);
+
+ SharedWorkerTestEnvironment.prototype.on_tests_ready = function() {
+ WorkerTestEnvironment.prototype.on_tests_ready.call(this);
+ // In the absence of an onload notification, we a require shared
+ // workers to explicitly signal when the tests are done.
+ tests.wait_for_finish = true;
+ };
+
+ /*
+ * Service workers.
+ * http://www.w3.org/TR/service-workers/
+ *
+ * This class is used as the test_environment when testharness is running
+ * inside a service worker.
+ */
+ function ServiceWorkerTestEnvironment() {
+ WorkerTestEnvironment.call(this);
+ this.all_loaded = false;
+ this.on_loaded_callback = null;
+ var this_obj = this;
+ self.addEventListener("message",
+ function(event) {
+ if (event.data && event.data.type && event.data.type === "connect") {
+ this_obj._add_message_port(event.source);
+ }
+ }, false);
+
+ // The oninstall event is received after the service worker script and
+ // all imported scripts have been fetched and executed. It's the
+ // equivalent of an onload event for a document. All tests should have
+ // been added by the time this event is received, thus it's not
+ // necessary to wait until the onactivate event. However, tests for
+ // installed service workers need another event which is equivalent to
+ // the onload event because oninstall is fired only on installation. The
+ // onmessage event is used for that purpose since tests using
+ // testharness.js should ask the result to its service worker by
+ // PostMessage. If the onmessage event is triggered on the service
+ // worker's context, that means the worker's script has been evaluated.
+ on_event(self, "install", on_all_loaded);
+ on_event(self, "message", on_all_loaded);
+ function on_all_loaded() {
+ if (this_obj.all_loaded)
+ return;
+ this_obj.all_loaded = true;
+ if (this_obj.on_loaded_callback) {
+ this_obj.on_loaded_callback();
+ }
+ }
+ }
+
+ ServiceWorkerTestEnvironment.prototype = Object.create(WorkerTestEnvironment.prototype);
+
+ ServiceWorkerTestEnvironment.prototype.add_on_loaded_callback = function(callback) {
+ if (this.all_loaded) {
+ callback();
+ } else {
+ this.on_loaded_callback = callback;
+ }
+ };
+
+ /*
+ * Shadow realms.
+ * https://github.com/tc39/proposal-shadowrealm
+ *
+ * This class is used as the test_environment when testharness is running
+ * inside a shadow realm.
+ */
+ function ShadowRealmTestEnvironment() {
+ WorkerTestEnvironment.call(this);
+ this.all_loaded = false;
+ this.on_loaded_callback = null;
+ }
+
+ ShadowRealmTestEnvironment.prototype = Object.create(WorkerTestEnvironment.prototype);
+
+ /**
+ * Signal to the test environment that the tests are ready and the on-loaded
+ * callback should be run.
+ *
+ * Shadow realms are not *really* a DOM context: they have no `onload` or similar
+ * event for us to use to set up the test environment; so, instead, this method
+ * is manually triggered from the incubating realm
+ *
+ * @param {Function} message_destination - a function that receives JSON-serializable
+ * data to send to the incubating realm, in the same format as used by RemoteContext
+ */
+ ShadowRealmTestEnvironment.prototype.begin = function(message_destination) {
+ if (this.all_loaded) {
+ throw new Error("Tried to start a shadow realm test environment after it has already started");
+ }
+ var fakeMessagePort = {};
+ fakeMessagePort.postMessage = message_destination;
+ this._add_message_port(fakeMessagePort);
+ this.all_loaded = true;
+ if (this.on_loaded_callback) {
+ this.on_loaded_callback();
+ }
+ };
+
+ ShadowRealmTestEnvironment.prototype.add_on_loaded_callback = function(callback) {
+ if (this.all_loaded) {
+ callback();
+ } else {
+ this.on_loaded_callback = callback;
+ }
+ };
+
+ /*
+ * JavaScript shells.
+ *
+ * This class is used as the test_environment when testharness is running
+ * inside a JavaScript shell.
+ */
+ function ShellTestEnvironment() {
+ this.name_counter = 0;
+ this.all_loaded = false;
+ this.on_loaded_callback = null;
+ Promise.resolve().then(function() {
+ this.all_loaded = true
+ if (this.on_loaded_callback) {
+ this.on_loaded_callback();
+ }
+ }.bind(this));
+ this.message_list = [];
+ this.message_ports = [];
+ }
+
+ ShellTestEnvironment.prototype.next_default_test_name = function() {
+ var suffix = this.name_counter > 0 ? " " + this.name_counter : "";
+ this.name_counter++;
+ return get_title() + suffix;
+ };
+
+ ShellTestEnvironment.prototype.on_new_harness_properties = function() {};
+
+ ShellTestEnvironment.prototype.on_tests_ready = function() {};
+
+ ShellTestEnvironment.prototype.add_on_loaded_callback = function(callback) {
+ if (this.all_loaded) {
+ callback();
+ } else {
+ this.on_loaded_callback = callback;
+ }
+ };
+
+ ShellTestEnvironment.prototype.test_timeout = function() {
+ // Tests running in a shell don't have a default timeout, so behave as
+ // if settings.explicit_timeout is true.
+ return null;
+ };
+
+ function create_test_environment() {
+ if ('document' in global_scope) {
+ return new WindowTestEnvironment();
+ }
+ if ('DedicatedWorkerGlobalScope' in global_scope &&
+ global_scope instanceof DedicatedWorkerGlobalScope) {
+ return new DedicatedWorkerTestEnvironment();
+ }
+ if ('SharedWorkerGlobalScope' in global_scope &&
+ global_scope instanceof SharedWorkerGlobalScope) {
+ return new SharedWorkerTestEnvironment();
+ }
+ if ('ServiceWorkerGlobalScope' in global_scope &&
+ global_scope instanceof ServiceWorkerGlobalScope) {
+ return new ServiceWorkerTestEnvironment();
+ }
+ if ('WorkerGlobalScope' in global_scope &&
+ global_scope instanceof WorkerGlobalScope) {
+ return new DedicatedWorkerTestEnvironment();
+ }
+ /* Shadow realm global objects are _ordinary_ objects (i.e. their prototype is
+ * Object) so we don't have a nice `instanceof` test to use; instead, we
+ * check if the there is a GLOBAL.isShadowRealm() property
+ * on the global object. that was set by the test harness when it
+ * created the ShadowRealm.
+ */
+ if (global_scope.GLOBAL && global_scope.GLOBAL.isShadowRealm()) {
+ return new ShadowRealmTestEnvironment();
+ }
+
+ return new ShellTestEnvironment();
+ }
+
+ var test_environment = create_test_environment();
+
+ function is_shared_worker(worker) {
+ return 'SharedWorker' in global_scope && worker instanceof SharedWorker;
+ }
+
+ function is_service_worker(worker) {
+ // The worker object may be from another execution context,
+ // so do not use instanceof here.
+ return 'ServiceWorker' in global_scope &&
+ Object.prototype.toString.call(worker) == '[object ServiceWorker]';
+ }
+
+ var seen_func_name = Object.create(null);
+
+ function get_test_name(func, name)
+ {
+ if (name) {
+ return name;
+ }
+
+ if (func) {
+ var func_code = func.toString();
+
+ // Try and match with brackets, but fallback to matching without
+ var arrow = func_code.match(/^\(\)\s*=>\s*(?:{(.*)}\s*|(.*))$/);
+
+ // Check for JS line separators
+ if (arrow !== null && !/[\u000A\u000D\u2028\u2029]/.test(func_code)) {
+ var trimmed = (arrow[1] !== undefined ? arrow[1] : arrow[2]).trim();
+ // drop trailing ; if there's no earlier ones
+ trimmed = trimmed.replace(/^([^;]*)(;\s*)+$/, "$1");
+
+ if (trimmed) {
+ let name = trimmed;
+ if (seen_func_name[trimmed]) {
+ // This subtest name already exists, so add a suffix.
+ name += " " + seen_func_name[trimmed];
+ } else {
+ seen_func_name[trimmed] = 0;
+ }
+ seen_func_name[trimmed] += 1;
+ return name;
+ }
+ }
+ }
+
+ return test_environment.next_default_test_name();
+ }
+
+ /**
+ * @callback TestFunction
+ * @param {Test} test - The test currnetly being run.
+ * @param {Any[]} args - Additional args to pass to function.
+ *
+ */
+
+ /**
+ * Create a synchronous test
+ *
+ * @param {TestFunction} func - Test function. This is executed
+ * immediately. If it returns without error, the test status is
+ * set to ``PASS``. If it throws an :js:class:`AssertionError`, or
+ * any other exception, the test status is set to ``FAIL``
+ * (typically from an `assert` function).
+ * @param {String} name - Test name. This must be unique in a
+ * given file and must be invariant between runs.
+ */
+ function test(func, name, properties)
+ {
+ if (tests.promise_setup_called) {
+ tests.status.status = tests.status.ERROR;
+ tests.status.message = '`test` invoked after `promise_setup`';
+ tests.complete();
+ }
+ var test_name = get_test_name(func, name);
+ var test_obj = new Test(test_name, properties);
+ var value = test_obj.step(func, test_obj, test_obj);
+
+ if (value !== undefined) {
+ var msg = 'Test named "' + test_name +
+ '" passed a function to `test` that returned a value.';
+
+ try {
+ if (value && typeof value.then === 'function') {
+ msg += ' Consider using `promise_test` instead when ' +
+ 'using Promises or async/await.';
+ }
+ } catch (err) {}
+
+ tests.status.status = tests.status.ERROR;
+ tests.status.message = msg;
+ }
+
+ if (test_obj.phase === test_obj.phases.STARTED) {
+ test_obj.done();
+ }
+ }
+
+ /**
+ * Create an asynchronous test
+ *
+ * @param {TestFunction|string} funcOrName - Initial step function
+ * to call immediately with the test name as an argument (if any),
+ * or name of the test.
+ * @param {String} name - Test name (if a test function was
+ * provided). This must be unique in a given file and must be
+ * invariant between runs.
+ * @returns {Test} An object representing the ongoing test.
+ */
+ function async_test(func, name, properties)
+ {
+ if (tests.promise_setup_called) {
+ tests.status.status = tests.status.ERROR;
+ tests.status.message = '`async_test` invoked after `promise_setup`';
+ tests.complete();
+ }
+ if (typeof func !== "function") {
+ properties = name;
+ name = func;
+ func = null;
+ }
+ var test_name = get_test_name(func, name);
+ var test_obj = new Test(test_name, properties);
+ if (func) {
+ var value = test_obj.step(func, test_obj, test_obj);
+
+ // Test authors sometimes return values to async_test, expecting us
+ // to handle the value somehow. Make doing so a harness error to be
+ // clear this is invalid, and point authors to promise_test if it
+ // may be appropriate.
+ //
+ // Note that we only perform this check on the initial function
+ // passed to async_test, not on any later steps - we haven't seen a
+ // consistent problem with those (and it's harder to check).
+ if (value !== undefined) {
+ var msg = 'Test named "' + test_name +
+ '" passed a function to `async_test` that returned a value.';
+
+ try {
+ if (value && typeof value.then === 'function') {
+ msg += ' Consider using `promise_test` instead when ' +
+ 'using Promises or async/await.';
+ }
+ } catch (err) {}
+
+ tests.set_status(tests.status.ERROR, msg);
+ tests.complete();
+ }
+ }
+ return test_obj;
+ }
+
+ /**
+ * Create a promise test.
+ *
+ * Promise tests are tests which are represented by a promise
+ * object. If the promise is fulfilled the test passes, if it's
+ * rejected the test fails, otherwise the test passes.
+ *
+ * @param {TestFunction} func - Test function. This must return a
+ * promise. The test is automatically marked as complete once the
+ * promise settles.
+ * @param {String} name - Test name. This must be unique in a
+ * given file and must be invariant between runs.
+ */
+ function promise_test(func, name, properties) {
+ if (typeof func !== "function") {
+ properties = name;
+ name = func;
+ func = null;
+ }
+ var test_name = get_test_name(func, name);
+ var test = new Test(test_name, properties);
+ test._is_promise_test = true;
+
+ // If there is no promise tests queue make one.
+ if (!tests.promise_tests) {
+ tests.promise_tests = Promise.resolve();
+ }
+ tests.promise_tests = tests.promise_tests.then(function() {
+ return new Promise(function(resolve) {
+ var promise = test.step(func, test, test);
+
+ test.step(function() {
+ assert(!!promise, "promise_test", null,
+ "test body must return a 'thenable' object (received ${value})",
+ {value:promise});
+ assert(typeof promise.then === "function", "promise_test", null,
+ "test body must return a 'thenable' object (received an object with no `then` method)",
+ null);
+ });
+
+ // Test authors may use the `step` method within a
+ // `promise_test` even though this reflects a mixture of
+ // asynchronous control flow paradigms. The "done" callback
+ // should be registered prior to the resolution of the
+ // user-provided Promise to avoid timeouts in cases where the
+ // Promise does not settle but a `step` function has thrown an
+ // error.
+ add_test_done_callback(test, resolve);
+
+ Promise.resolve(promise)
+ .catch(test.step_func(
+ function(value) {
+ if (value instanceof AssertionError) {
+ throw value;
+ }
+ assert(false, "promise_test", null,
+ "Unhandled rejection with value: ${value}", {value:value});
+ }))
+ .then(function() {
+ test.done();
+ });
+ });
+ });
+ }
+
+ /**
+ * Make a copy of a Promise in the current realm.
+ *
+ * @param {Promise} promise the given promise that may be from a different
+ * realm
+ * @returns {Promise}
+ *
+ * An arbitrary promise provided by the caller may have originated
+ * in another frame that have since navigated away, rendering the
+ * frame's document inactive. Such a promise cannot be used with
+ * `await` or Promise.resolve(), as microtasks associated with it
+ * may be prevented from being run. See `issue
+ * 5319<https://github.com/whatwg/html/issues/5319>`_ for a
+ * particular case.
+ *
+ * In functions we define here, there is an expectation from the caller
+ * that the promise is from the current realm, that can always be used with
+ * `await`, etc. We therefore create a new promise in this realm that
+ * inherit the value and status from the given promise.
+ */
+
+ function bring_promise_to_current_realm(promise) {
+ return new Promise(promise.then.bind(promise));
+ }
+
+ /**
+ * Assert that a Promise is rejected with the right ECMAScript exception.
+ *
+ * @param {Test} test - the `Test` to use for the assertion.
+ * @param {Function} constructor - The expected exception constructor.
+ * @param {Promise} promise - The promise that's expected to
+ * reject with the given exception.
+ * @param {string} [description] Error message to add to assert in case of
+ * failure.
+ */
+ function promise_rejects_js(test, constructor, promise, description) {
+ return bring_promise_to_current_realm(promise)
+ .then(test.unreached_func("Should have rejected: " + description))
+ .catch(function(e) {
+ assert_throws_js_impl(constructor, function() { throw e },
+ description, "promise_rejects_js");
+ });
+ }
+
+ /**
+ * Assert that a Promise is rejected with the right DOMException.
+ *
+ * For the remaining arguments, there are two ways of calling
+ * promise_rejects_dom:
+ *
+ * 1) If the DOMException is expected to come from the current global, the
+ * third argument should be the promise expected to reject, and a fourth,
+ * optional, argument is the assertion description.
+ *
+ * 2) If the DOMException is expected to come from some other global, the
+ * third argument should be the DOMException constructor from that global,
+ * the fourth argument the promise expected to reject, and the fifth,
+ * optional, argument the assertion description.
+ *
+ * @param {Test} test - the `Test` to use for the assertion.
+ * @param {number|string} type - See documentation for
+ * `assert_throws_dom <#assert_throws_dom>`_.
+ * @param {Function} promiseOrConstructor - Either the constructor
+ * for the expected exception (if the exception comes from another
+ * global), or the promise that's expected to reject (if the
+ * exception comes from the current global).
+ * @param {Function|string} descriptionOrPromise - Either the
+ * promise that's expected to reject (if the exception comes from
+ * another global), or the optional description of the condition
+ * being tested (if the exception comes from the current global).
+ * @param {string} [description] - Description of the condition
+ * being tested (if the exception comes from another global).
+ *
+ */
+ function promise_rejects_dom(test, type, promiseOrConstructor, descriptionOrPromise, maybeDescription) {
+ let constructor, promise, description;
+ if (typeof promiseOrConstructor === "function" &&
+ promiseOrConstructor.name === "DOMException") {
+ constructor = promiseOrConstructor;
+ promise = descriptionOrPromise;
+ description = maybeDescription;
+ } else {
+ constructor = self.DOMException;
+ promise = promiseOrConstructor;
+ description = descriptionOrPromise;
+ assert(maybeDescription === undefined,
+ "Too many args pased to no-constructor version of promise_rejects_dom");
+ }
+ return bring_promise_to_current_realm(promise)
+ .then(test.unreached_func("Should have rejected: " + description))
+ .catch(function(e) {
+ assert_throws_dom_impl(type, function() { throw e }, description,
+ "promise_rejects_dom", constructor);
+ });
+ }
+
+ /**
+ * Assert that a Promise is rejected with the provided value.
+ *
+ * @param {Test} test - the `Test` to use for the assertion.
+ * @param {Any} exception - The expected value of the rejected promise.
+ * @param {Promise} promise - The promise that's expected to
+ * reject.
+ * @param {string} [description] Error message to add to assert in case of
+ * failure.
+ */
+ function promise_rejects_exactly(test, exception, promise, description) {
+ return bring_promise_to_current_realm(promise)
+ .then(test.unreached_func("Should have rejected: " + description))
+ .catch(function(e) {
+ assert_throws_exactly_impl(exception, function() { throw e },
+ description, "promise_rejects_exactly");
+ });
+ }
+
+ /**
+ * Allow DOM events to be handled using Promises.
+ *
+ * This can make it a lot easier to test a very specific series of events,
+ * including ensuring that unexpected events are not fired at any point.
+ *
+ * `EventWatcher` will assert if an event occurs while there is no `wait_for`
+ * created Promise waiting to be fulfilled, or if the event is of a different type
+ * to the type currently expected. This ensures that only the events that are
+ * expected occur, in the correct order, and with the correct timing.
+ *
+ * @constructor
+ * @param {Test} test - The `Test` to use for the assertion.
+ * @param {EventTarget} watchedNode - The target expected to receive the events.
+ * @param {string[]} eventTypes - List of events to watch for.
+ * @param {Promise} timeoutPromise - Promise that will cause the
+ * test to be set to `TIMEOUT` once fulfilled.
+ *
+ */
+ function EventWatcher(test, watchedNode, eventTypes, timeoutPromise)
+ {
+ if (typeof eventTypes == 'string') {
+ eventTypes = [eventTypes];
+ }
+
+ var waitingFor = null;
+
+ // This is null unless we are recording all events, in which case it
+ // will be an Array object.
+ var recordedEvents = null;
+
+ var eventHandler = test.step_func(function(evt) {
+ assert_true(!!waitingFor,
+ 'Not expecting event, but got ' + evt.type + ' event');
+ assert_equals(evt.type, waitingFor.types[0],
+ 'Expected ' + waitingFor.types[0] + ' event, but got ' +
+ evt.type + ' event instead');
+
+ if (Array.isArray(recordedEvents)) {
+ recordedEvents.push(evt);
+ }
+
+ if (waitingFor.types.length > 1) {
+ // Pop first event from array
+ waitingFor.types.shift();
+ return;
+ }
+ // We need to null out waitingFor before calling the resolve function
+ // since the Promise's resolve handlers may call wait_for() which will
+ // need to set waitingFor.
+ var resolveFunc = waitingFor.resolve;
+ waitingFor = null;
+ // Likewise, we should reset the state of recordedEvents.
+ var result = recordedEvents || evt;
+ recordedEvents = null;
+ resolveFunc(result);
+ });
+
+ for (var i = 0; i < eventTypes.length; i++) {
+ watchedNode.addEventListener(eventTypes[i], eventHandler, false);
+ }
+
+ /**
+ * Returns a Promise that will resolve after the specified event or
+ * series of events has occurred.
+ *
+ * @param {Object} options An optional options object. If the 'record' property
+ * on this object has the value 'all', when the Promise
+ * returned by this function is resolved, *all* Event
+ * objects that were waited for will be returned as an
+ * array.
+ *
+ * @example
+ * const watcher = new EventWatcher(t, div, [ 'animationstart',
+ * 'animationiteration',
+ * 'animationend' ]);
+ * return watcher.wait_for([ 'animationstart', 'animationend' ],
+ * { record: 'all' }).then(evts => {
+ * assert_equals(evts[0].elapsedTime, 0.0);
+ * assert_equals(evts[1].elapsedTime, 2.0);
+ * });
+ */
+ this.wait_for = function(types, options) {
+ if (waitingFor) {
+ return Promise.reject('Already waiting for an event or events');
+ }
+ if (typeof types == 'string') {
+ types = [types];
+ }
+ if (options && options.record && options.record === 'all') {
+ recordedEvents = [];
+ }
+ return new Promise(function(resolve, reject) {
+ var timeout = test.step_func(function() {
+ // If the timeout fires after the events have been received
+ // or during a subsequent call to wait_for, ignore it.
+ if (!waitingFor || waitingFor.resolve !== resolve)
+ return;
+
+ // This should always fail, otherwise we should have
+ // resolved the promise.
+ assert_true(waitingFor.types.length == 0,
+ 'Timed out waiting for ' + waitingFor.types.join(', '));
+ var result = recordedEvents;
+ recordedEvents = null;
+ var resolveFunc = waitingFor.resolve;
+ waitingFor = null;
+ resolveFunc(result);
+ });
+
+ if (timeoutPromise) {
+ timeoutPromise().then(timeout);
+ }
+
+ waitingFor = {
+ types: types,
+ resolve: resolve,
+ reject: reject
+ };
+ });
+ };
+
+ /**
+ * Stop listening for events
+ */
+ function stop_watching() {
+ for (var i = 0; i < eventTypes.length; i++) {
+ watchedNode.removeEventListener(eventTypes[i], eventHandler, false);
+ }
+ };
+
+ test._add_cleanup(stop_watching);
+
+ return this;
+ }
+ expose(EventWatcher, 'EventWatcher');
+
+ /**
+ * @typedef {Object} SettingsObject
+ * @property {bool} single_test - Use the single-page-test
+ * mode. In this mode the Document represents a single
+ * `async_test`. Asserts may be used directly without requiring
+ * `Test.step` or similar wrappers, and any exceptions set the
+ * status of the test rather than the status of the harness.
+ * @property {bool} allow_uncaught_exception - don't treat an
+ * uncaught exception as an error; needed when e.g. testing the
+ * `window.onerror` handler.
+ * @property {boolean} explicit_done - Wait for a call to `done()`
+ * before declaring all tests complete (this is always true for
+ * single-page tests).
+ * @property hide_test_state - hide the test state output while
+ * the test is running; This is helpful when the output of the test state
+ * may interfere the test results.
+ * @property {bool} explicit_timeout - disable file timeout; only
+ * stop waiting for results when the `timeout()` function is
+ * called This should typically only be set for manual tests, or
+ * by a test runner that providees its own timeout mechanism.
+ * @property {number} timeout_multiplier - Multiplier to apply to
+ * per-test timeouts. This should only be set by a test runner.
+ * @property {Document} output_document - The document to which
+ * results should be logged. By default this is the current
+ * document but could be an ancestor document in some cases e.g. a
+ * SVG test loaded in an HTML wrapper
+ *
+ */
+
+ /**
+ * Configure the harness
+ *
+ * @param {Function|SettingsObject} funcOrProperties - Either a
+ * setup function to run, or a set of properties. If this is a
+ * function that function is run synchronously. Any exception in
+ * the function will set the overall harness status to `ERROR`.
+ * @param {SettingsObject} maybeProperties - An object containing
+ * the settings to use, if the first argument is a function.
+ *
+ */
+ function setup(func_or_properties, maybe_properties)
+ {
+ var func = null;
+ var properties = {};
+ if (arguments.length === 2) {
+ func = func_or_properties;
+ properties = maybe_properties;
+ } else if (func_or_properties instanceof Function) {
+ func = func_or_properties;
+ } else {
+ properties = func_or_properties;
+ }
+ tests.setup(func, properties);
+ test_environment.on_new_harness_properties(properties);
+ }
+
+ /**
+ * Configure the harness, waiting for a promise to resolve
+ * before running any `promise_test` tests.
+ *
+ * @param {Function} func - Function returning a promise that's
+ * run synchronously. Promise tests are not run until after this
+ * function has resolved.
+ * @param {SettingsObject} [properties] - An object containing
+ * the harness settings to use.
+ *
+ */
+ function promise_setup(func, properties={})
+ {
+ if (typeof func !== "function") {
+ tests.set_status(tests.status.ERROR,
+ "promise_test invoked without a function");
+ tests.complete();
+ return;
+ }
+ tests.promise_setup_called = true;
+
+ if (!tests.promise_tests) {
+ tests.promise_tests = Promise.resolve();
+ }
+
+ tests.promise_tests = tests.promise_tests
+ .then(function()
+ {
+ var result;
+
+ tests.setup(null, properties);
+ result = func();
+ test_environment.on_new_harness_properties(properties);
+
+ if (!result || typeof result.then !== "function") {
+ throw "Non-thenable returned by function passed to `promise_setup`";
+ }
+ return result;
+ })
+ .catch(function(e)
+ {
+ tests.set_status(tests.status.ERROR,
+ String(e),
+ e && e.stack);
+ tests.complete();
+ });
+ }
+
+ /**
+ * Mark test loading as complete.
+ *
+ * Typically this function is called implicitly on page load; it's
+ * only necessary for users to call this when either the
+ * ``explicit_done`` or ``single_page`` properties have been set
+ * via the :js:func:`setup` function.
+ *
+ * For single page tests this marks the test as complete and sets its status.
+ * For other tests, this marks test loading as complete, but doesn't affect ongoing tests.
+ */
+ function done() {
+ if (tests.tests.length === 0) {
+ // `done` is invoked after handling uncaught exceptions, so if the
+ // harness status is already set, the corresponding message is more
+ // descriptive than the generic message defined here.
+ if (tests.status.status === null) {
+ tests.status.status = tests.status.ERROR;
+ tests.status.message = "done() was called without first defining any tests";
+ }
+
+ tests.complete();
+ return;
+ }
+ if (tests.file_is_test) {
+ // file is test files never have asynchronous cleanup logic,
+ // meaning the fully-synchronous `done` function can be used here.
+ tests.tests[0].done();
+ }
+ tests.end_wait();
+ }
+
+ /**
+ * @deprecated generate a list of tests from a function and list of arguments
+ *
+ * This is deprecated because it runs all the tests outside of the test functions
+ * and as a result any test throwing an exception will result in no tests being
+ * run. In almost all cases, you should simply call test within the loop you would
+ * use to generate the parameter list array.
+ *
+ * @param {Function} func - The function that will be called for each generated tests.
+ * @param {Any[][]} args - An array of arrays. Each nested array
+ * has the structure `[testName, ...testArgs]`. For each of these nested arrays
+ * array, a test is generated with name `testName` and test function equivalent to
+ * `func(..testArgs)`.
+ */
+ function generate_tests(func, args, properties) {
+ forEach(args, function(x, i)
+ {
+ var name = x[0];
+ test(function()
+ {
+ func.apply(this, x.slice(1));
+ },
+ name,
+ Array.isArray(properties) ? properties[i] : properties);
+ });
+ }
+
+ /**
+ * @deprecated
+ *
+ * Register a function as a DOM event listener to the
+ * given object for the event bubbling phase.
+ *
+ * @param {EventTarget} object - Event target
+ * @param {string} event - Event name
+ * @param {Function} callback - Event handler.
+ */
+ function on_event(object, event, callback)
+ {
+ object.addEventListener(event, callback, false);
+ }
+
+ /**
+ * Global version of :js:func:`Test.step_timeout` for use in single page tests.
+ *
+ * @param {Function} func - Function to run after the timeout
+ * @param {number} timeout - Time in ms to wait before running the
+ * test step. The actual wait time is ``timeout`` x
+ * ``timeout_multiplier``.
+ */
+ function step_timeout(func, timeout) {
+ var outer_this = this;
+ var args = Array.prototype.slice.call(arguments, 2);
+ return setTimeout(function() {
+ func.apply(outer_this, args);
+ }, timeout * tests.timeout_multiplier);
+ }
+
+ expose(test, 'test');
+ expose(async_test, 'async_test');
+ expose(promise_test, 'promise_test');
+ expose(promise_rejects_js, 'promise_rejects_js');
+ expose(promise_rejects_dom, 'promise_rejects_dom');
+ expose(promise_rejects_exactly, 'promise_rejects_exactly');
+ expose(generate_tests, 'generate_tests');
+ expose(setup, 'setup');
+ expose(promise_setup, 'promise_setup');
+ expose(done, 'done');
+ expose(on_event, 'on_event');
+ expose(step_timeout, 'step_timeout');
+
+ /*
+ * Return a string truncated to the given length, with ... added at the end
+ * if it was longer.
+ */
+ function truncate(s, len)
+ {
+ if (s.length > len) {
+ return s.substring(0, len - 3) + "...";
+ }
+ return s;
+ }
+
+ /*
+ * Return true if object is probably a Node object.
+ */
+ function is_node(object)
+ {
+ // I use duck-typing instead of instanceof, because
+ // instanceof doesn't work if the node is from another window (like an
+ // iframe's contentWindow):
+ // http://www.w3.org/Bugs/Public/show_bug.cgi?id=12295
+ try {
+ var has_node_properties = ("nodeType" in object &&
+ "nodeName" in object &&
+ "nodeValue" in object &&
+ "childNodes" in object);
+ } catch (e) {
+ // We're probably cross-origin, which means we aren't a node
+ return false;
+ }
+
+ if (has_node_properties) {
+ try {
+ object.nodeType;
+ } catch (e) {
+ // The object is probably Node.prototype or another prototype
+ // object that inherits from it, and not a Node instance.
+ return false;
+ }
+ return true;
+ }
+ return false;
+ }
+
+ var replacements = {
+ "0": "0",
+ "1": "x01",
+ "2": "x02",
+ "3": "x03",
+ "4": "x04",
+ "5": "x05",
+ "6": "x06",
+ "7": "x07",
+ "8": "b",
+ "9": "t",
+ "10": "n",
+ "11": "v",
+ "12": "f",
+ "13": "r",
+ "14": "x0e",
+ "15": "x0f",
+ "16": "x10",
+ "17": "x11",
+ "18": "x12",
+ "19": "x13",
+ "20": "x14",
+ "21": "x15",
+ "22": "x16",
+ "23": "x17",
+ "24": "x18",
+ "25": "x19",
+ "26": "x1a",
+ "27": "x1b",
+ "28": "x1c",
+ "29": "x1d",
+ "30": "x1e",
+ "31": "x1f",
+ "0xfffd": "ufffd",
+ "0xfffe": "ufffe",
+ "0xffff": "uffff",
+ };
+
+ /**
+ * Convert a value to a nice, human-readable string
+ *
+ * When many JavaScript Object values are coerced to a String, the
+ * resulting value will be ``"[object Object]"``. This obscures
+ * helpful information, making the coerced value unsuitable for
+ * use in assertion messages, test names, and debugging
+ * statements. `format_value` produces more distinctive string
+ * representations of many kinds of objects, including arrays and
+ * the more important DOM Node types. It also translates String
+ * values containing control characters to include human-readable
+ * representations.
+ *
+ * @example
+ * // "Document node with 2 children"
+ * format_value(document);
+ * @example
+ * // "\"foo\\uffffbar\""
+ * format_value("foo\uffffbar");
+ * @example
+ * // "[-0, Infinity]"
+ * format_value([-0, Infinity]);
+ * @param {Any} val - The value to convert to a string.
+ * @returns {string} - A string representation of ``val``, optimised for human readability.
+ */
+ function format_value(val, seen)
+ {
+ if (!seen) {
+ seen = [];
+ }
+ if (typeof val === "object" && val !== null) {
+ if (seen.indexOf(val) >= 0) {
+ return "[...]";
+ }
+ seen.push(val);
+ }
+ if (Array.isArray(val)) {
+ let output = "[";
+ if (val.beginEllipsis !== undefined) {
+ output += "…, ";
+ }
+ output += val.map(function(x) {return format_value(x, seen);}).join(", ");
+ if (val.endEllipsis !== undefined) {
+ output += ", …";
+ }
+ return output + "]";
+ }
+
+ switch (typeof val) {
+ case "string":
+ val = val.replace(/\\/g, "\\\\");
+ for (var p in replacements) {
+ var replace = "\\" + replacements[p];
+ val = val.replace(RegExp(String.fromCharCode(p), "g"), replace);
+ }
+ return '"' + val.replace(/"/g, '\\"') + '"';
+ case "boolean":
+ case "undefined":
+ return String(val);
+ case "number":
+ // In JavaScript, -0 === 0 and String(-0) == "0", so we have to
+ // special-case.
+ if (val === -0 && 1/val === -Infinity) {
+ return "-0";
+ }
+ return String(val);
+ case "object":
+ if (val === null) {
+ return "null";
+ }
+
+ // Special-case Node objects, since those come up a lot in my tests. I
+ // ignore namespaces.
+ if (is_node(val)) {
+ switch (val.nodeType) {
+ case Node.ELEMENT_NODE:
+ var ret = "<" + val.localName;
+ for (var i = 0; i < val.attributes.length; i++) {
+ ret += " " + val.attributes[i].name + '="' + val.attributes[i].value + '"';
+ }
+ ret += ">" + val.innerHTML + "</" + val.localName + ">";
+ return "Element node " + truncate(ret, 60);
+ case Node.TEXT_NODE:
+ return 'Text node "' + truncate(val.data, 60) + '"';
+ case Node.PROCESSING_INSTRUCTION_NODE:
+ return "ProcessingInstruction node with target " + format_value(truncate(val.target, 60)) + " and data " + format_value(truncate(val.data, 60));
+ case Node.COMMENT_NODE:
+ return "Comment node <!--" + truncate(val.data, 60) + "-->";
+ case Node.DOCUMENT_NODE:
+ return "Document node with " + val.childNodes.length + (val.childNodes.length == 1 ? " child" : " children");
+ case Node.DOCUMENT_TYPE_NODE:
+ return "DocumentType node";
+ case Node.DOCUMENT_FRAGMENT_NODE:
+ return "DocumentFragment node with " + val.childNodes.length + (val.childNodes.length == 1 ? " child" : " children");
+ default:
+ return "Node object of unknown type";
+ }
+ }
+
+ /* falls through */
+ default:
+ try {
+ return typeof val + ' "' + truncate(String(val), 1000) + '"';
+ } catch(e) {
+ return ("[stringifying object threw " + String(e) +
+ " with type " + String(typeof e) + "]");
+ }
+ }
+ }
+ expose(format_value, "format_value");
+
+ /*
+ * Assertions
+ */
+
+ function expose_assert(f, name) {
+ function assert_wrapper(...args) {
+ let status = Test.statuses.TIMEOUT;
+ let stack = null;
+ let new_assert_index = null;
+ try {
+ if (settings.debug) {
+ console.debug("ASSERT", name, tests.current_test && tests.current_test.name, args);
+ }
+ if (tests.output) {
+ tests.set_assert(name, args);
+ // Remember the newly pushed assert's index, because `apply`
+ // below might push new asserts.
+ new_assert_index = tests.asserts_run.length - 1;
+ }
+ const rv = f.apply(undefined, args);
+ status = Test.statuses.PASS;
+ return rv;
+ } catch(e) {
+ status = Test.statuses.FAIL;
+ stack = e.stack ? e.stack : null;
+ throw e;
+ } finally {
+ if (tests.output && !stack) {
+ stack = get_stack();
+ }
+ if (tests.output) {
+ tests.set_assert_status(new_assert_index, status, stack);
+ }
+ }
+ }
+ expose(assert_wrapper, name);
+ }
+
+ /**
+ * Assert that ``actual`` is strictly true
+ *
+ * @param {Any} actual - Value that is asserted to be true
+ * @param {string} [description] - Description of the condition being tested
+ */
+ function assert_true(actual, description)
+ {
+ assert(actual === true, "assert_true", description,
+ "expected true got ${actual}", {actual:actual});
+ }
+ expose_assert(assert_true, "assert_true");
+
+ /**
+ * Assert that ``actual`` is strictly false
+ *
+ * @param {Any} actual - Value that is asserted to be false
+ * @param {string} [description] - Description of the condition being tested
+ */
+ function assert_false(actual, description)
+ {
+ assert(actual === false, "assert_false", description,
+ "expected false got ${actual}", {actual:actual});
+ }
+ expose_assert(assert_false, "assert_false");
+
+ function same_value(x, y) {
+ if (y !== y) {
+ //NaN case
+ return x !== x;
+ }
+ if (x === 0 && y === 0) {
+ //Distinguish +0 and -0
+ return 1/x === 1/y;
+ }
+ return x === y;
+ }
+
+ /**
+ * Assert that ``actual`` is the same value as ``expected``.
+ *
+ * For objects this compares by cobject identity; for primitives
+ * this distinguishes between 0 and -0, and has correct handling
+ * of NaN.
+ *
+ * @param {Any} actual - Test value.
+ * @param {Any} expected - Expected value.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_equals(actual, expected, description)
+ {
+ /*
+ * Test if two primitives are equal or two objects
+ * are the same object
+ */
+ if (typeof actual != typeof expected) {
+ assert(false, "assert_equals", description,
+ "expected (" + typeof expected + ") ${expected} but got (" + typeof actual + ") ${actual}",
+ {expected:expected, actual:actual});
+ return;
+ }
+ assert(same_value(actual, expected), "assert_equals", description,
+ "expected ${expected} but got ${actual}",
+ {expected:expected, actual:actual});
+ }
+ expose_assert(assert_equals, "assert_equals");
+
+ /**
+ * 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.
+ */
+ function assert_not_equals(actual, expected, description)
+ {
+ assert(!same_value(actual, expected), "assert_not_equals", description,
+ "got disallowed value ${actual}",
+ {actual:actual});
+ }
+ expose_assert(assert_not_equals, "assert_not_equals");
+
+ /**
+ * Assert that ``expected`` is an array and ``actual`` is one of the members.
+ * This is implemented using ``indexOf``, so doesn't handle NaN or ±0 correctly.
+ *
+ * @param {Any} actual - Test value.
+ * @param {Array} expected - An array that ``actual`` is expected to
+ * be a member of.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_in_array(actual, expected, description)
+ {
+ assert(expected.indexOf(actual) != -1, "assert_in_array", description,
+ "value ${actual} not in array ${expected}",
+ {actual:actual, expected:expected});
+ }
+ expose_assert(assert_in_array, "assert_in_array");
+
+ // This function was deprecated in July of 2015.
+ // See https://github.com/web-platform-tests/wpt/issues/2033
+ /**
+ * @deprecated
+ * Recursively compare two objects for equality.
+ *
+ * See `Issue 2033
+ * <https://github.com/web-platform-tests/wpt/issues/2033>`_ for
+ * more information.
+ *
+ * @param {Object} actual - Test value.
+ * @param {Object} expected - Expected value.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_object_equals(actual, expected, description)
+ {
+ assert(typeof actual === "object" && actual !== null, "assert_object_equals", description,
+ "value is ${actual}, expected object",
+ {actual: actual});
+ //This needs to be improved a great deal
+ function check_equal(actual, expected, stack)
+ {
+ stack.push(actual);
+
+ var p;
+ for (p in actual) {
+ assert(expected.hasOwnProperty(p), "assert_object_equals", description,
+ "unexpected property ${p}", {p:p});
+
+ if (typeof actual[p] === "object" && actual[p] !== null) {
+ if (stack.indexOf(actual[p]) === -1) {
+ check_equal(actual[p], expected[p], stack);
+ }
+ } else {
+ assert(same_value(actual[p], expected[p]), "assert_object_equals", description,
+ "property ${p} expected ${expected} got ${actual}",
+ {p:p, expected:expected[p], actual:actual[p]});
+ }
+ }
+ for (p in expected) {
+ assert(actual.hasOwnProperty(p),
+ "assert_object_equals", description,
+ "expected property ${p} missing", {p:p});
+ }
+ stack.pop();
+ }
+ check_equal(actual, expected, []);
+ }
+ expose_assert(assert_object_equals, "assert_object_equals");
+
+ /**
+ * Assert that ``actual`` and ``expected`` are both arrays, and that the array properties of
+ * ``actual`` and ``expected`` are all the same value (as for :js:func:`assert_equals`).
+ *
+ * @param {Array} actual - Test array.
+ * @param {Array} expected - Array that is expected to contain the same values as ``actual``.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_array_equals(actual, expected, description)
+ {
+ const max_array_length = 20;
+ function shorten_array(arr, offset = 0) {
+ // Make ", …" only show up when it would likely reduce the length, not accounting for
+ // fonts.
+ if (arr.length < max_array_length + 2) {
+ return arr;
+ }
+ // By default we want half the elements after the offset and half before
+ // But if that takes us past the end of the array, we have more before, and
+ // if it takes us before the start we have more after.
+ const length_after_offset = Math.floor(max_array_length / 2);
+ let upper_bound = Math.min(length_after_offset + offset, arr.length);
+ const lower_bound = Math.max(upper_bound - max_array_length, 0);
+
+ if (lower_bound === 0) {
+ upper_bound = max_array_length;
+ }
+
+ const output = arr.slice(lower_bound, upper_bound);
+ if (lower_bound > 0) {
+ output.beginEllipsis = true;
+ }
+ if (upper_bound < arr.length) {
+ output.endEllipsis = true;
+ }
+ return output;
+ }
+
+ assert(typeof actual === "object" && actual !== null && "length" in actual,
+ "assert_array_equals", description,
+ "value is ${actual}, expected array",
+ {actual:actual});
+ assert(actual.length === expected.length,
+ "assert_array_equals", description,
+ "lengths differ, expected array ${expected} length ${expectedLength}, got ${actual} length ${actualLength}",
+ {expected:shorten_array(expected, expected.length - 1), expectedLength:expected.length,
+ actual:shorten_array(actual, actual.length - 1), actualLength:actual.length
+ });
+
+ for (var i = 0; i < actual.length; i++) {
+ assert(actual.hasOwnProperty(i) === expected.hasOwnProperty(i),
+ "assert_array_equals", description,
+ "expected property ${i} to be ${expected} but was ${actual} (expected array ${arrayExpected} got ${arrayActual})",
+ {i:i, expected:expected.hasOwnProperty(i) ? "present" : "missing",
+ actual:actual.hasOwnProperty(i) ? "present" : "missing",
+ arrayExpected:shorten_array(expected, i), arrayActual:shorten_array(actual, i)});
+ assert(same_value(expected[i], actual[i]),
+ "assert_array_equals", description,
+ "expected property ${i} to be ${expected} but got ${actual} (expected array ${arrayExpected} got ${arrayActual})",
+ {i:i, expected:expected[i], actual:actual[i],
+ arrayExpected:shorten_array(expected, i), arrayActual:shorten_array(actual, i)});
+ }
+ }
+ expose_assert(assert_array_equals, "assert_array_equals");
+
+ /**
+ * Assert that each array property in ``actual`` is a number within
+ * ± `epsilon` of the corresponding property in `expected`.
+ *
+ * @param {Array} actual - Array of test values.
+ * @param {Array} expected - Array of values expected to be close to the values in ``actual``.
+ * @param {number} epsilon - Magnitude of allowed difference
+ * between each value in ``actual`` and ``expected``.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_array_approx_equals(actual, expected, epsilon, description)
+ {
+ /*
+ * Test if two primitive arrays are equal within +/- epsilon
+ */
+ assert(actual.length === expected.length,
+ "assert_array_approx_equals", description,
+ "lengths differ, expected ${expected} got ${actual}",
+ {expected:expected.length, actual:actual.length});
+
+ for (var i = 0; i < actual.length; i++) {
+ assert(actual.hasOwnProperty(i) === expected.hasOwnProperty(i),
+ "assert_array_approx_equals", description,
+ "property ${i}, property expected to be ${expected} but was ${actual}",
+ {i:i, expected:expected.hasOwnProperty(i) ? "present" : "missing",
+ actual:actual.hasOwnProperty(i) ? "present" : "missing"});
+ assert(typeof actual[i] === "number",
+ "assert_array_approx_equals", description,
+ "property ${i}, expected a number but got a ${type_actual}",
+ {i:i, type_actual:typeof actual[i]});
+ assert(Math.abs(actual[i] - expected[i]) <= epsilon,
+ "assert_array_approx_equals", description,
+ "property ${i}, expected ${expected} +/- ${epsilon}, expected ${expected} but got ${actual}",
+ {i:i, expected:expected[i], actual:actual[i], epsilon:epsilon});
+ }
+ }
+ expose_assert(assert_array_approx_equals, "assert_array_approx_equals");
+
+ /**
+ * Assert that ``actual`` is within ± ``epsilon`` of ``expected``.
+ *
+ * @param {number} actual - Test value.
+ * @param {number} expected - Value number is expected to be close to.
+ * @param {number} epsilon - Magnitude of allowed difference between ``actual`` and ``expected``.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_approx_equals(actual, expected, epsilon, description)
+ {
+ /*
+ * Test if two primitive numbers are equal within +/- epsilon
+ */
+ assert(typeof actual === "number",
+ "assert_approx_equals", description,
+ "expected a number but got a ${type_actual}",
+ {type_actual:typeof actual});
+
+ // The epsilon math below does not place nice with NaN and Infinity
+ // But in this case Infinity = Infinity and NaN = NaN
+ if (isFinite(actual) || isFinite(expected)) {
+ assert(Math.abs(actual - expected) <= epsilon,
+ "assert_approx_equals", description,
+ "expected ${expected} +/- ${epsilon} but got ${actual}",
+ {expected:expected, actual:actual, epsilon:epsilon});
+ } else {
+ assert_equals(actual, expected);
+ }
+ }
+ expose_assert(assert_approx_equals, "assert_approx_equals");
+
+ /**
+ * Assert that ``actual`` is a number less than ``expected``.
+ *
+ * @param {number} actual - Test value.
+ * @param {number} expected - Number that ``actual`` must be less than.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_less_than(actual, expected, description)
+ {
+ /*
+ * Test if a primitive number is less than another
+ */
+ assert(typeof actual === "number",
+ "assert_less_than", description,
+ "expected a number but got a ${type_actual}",
+ {type_actual:typeof actual});
+
+ assert(actual < expected,
+ "assert_less_than", description,
+ "expected a number less than ${expected} but got ${actual}",
+ {expected:expected, actual:actual});
+ }
+ expose_assert(assert_less_than, "assert_less_than");
+
+ /**
+ * Assert that ``actual`` is a number greater than ``expected``.
+ *
+ * @param {number} actual - Test value.
+ * @param {number} expected - Number that ``actual`` must be greater than.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_greater_than(actual, expected, description)
+ {
+ /*
+ * Test if a primitive number is greater than another
+ */
+ assert(typeof actual === "number",
+ "assert_greater_than", description,
+ "expected a number but got a ${type_actual}",
+ {type_actual:typeof actual});
+
+ assert(actual > expected,
+ "assert_greater_than", description,
+ "expected a number greater than ${expected} but got ${actual}",
+ {expected:expected, actual:actual});
+ }
+ expose_assert(assert_greater_than, "assert_greater_than");
+
+ /**
+ * Assert that ``actual`` is a number greater than ``lower`` and less
+ * than ``upper`` but not equal to either.
+ *
+ * @param {number} actual - Test value.
+ * @param {number} lower - Number that ``actual`` must be greater than.
+ * @param {number} upper - Number that ``actual`` must be less than.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_between_exclusive(actual, lower, upper, description)
+ {
+ /*
+ * Test if a primitive number is between two others
+ */
+ assert(typeof actual === "number",
+ "assert_between_exclusive", description,
+ "expected a number but got a ${type_actual}",
+ {type_actual:typeof actual});
+
+ assert(actual > lower && actual < upper,
+ "assert_between_exclusive", description,
+ "expected a number greater than ${lower} " +
+ "and less than ${upper} but got ${actual}",
+ {lower:lower, upper:upper, actual:actual});
+ }
+ expose_assert(assert_between_exclusive, "assert_between_exclusive");
+
+ /**
+ * Assert that ``actual`` is a number less than or equal to ``expected``.
+ *
+ * @param {number} actual - Test value.
+ * @param {number} expected - Number that ``actual`` must be less
+ * than or equal to.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_less_than_equal(actual, expected, description)
+ {
+ /*
+ * Test if a primitive number is less than or equal to another
+ */
+ assert(typeof actual === "number",
+ "assert_less_than_equal", description,
+ "expected a number but got a ${type_actual}",
+ {type_actual:typeof actual});
+
+ assert(actual <= expected,
+ "assert_less_than_equal", description,
+ "expected a number less than or equal to ${expected} but got ${actual}",
+ {expected:expected, actual:actual});
+ }
+ expose_assert(assert_less_than_equal, "assert_less_than_equal");
+
+ /**
+ * Assert that ``actual`` is a number greater than or equal to ``expected``.
+ *
+ * @param {number} actual - Test value.
+ * @param {number} expected - Number that ``actual`` must be greater
+ * than or equal to.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_greater_than_equal(actual, expected, description)
+ {
+ /*
+ * Test if a primitive number is greater than or equal to another
+ */
+ assert(typeof actual === "number",
+ "assert_greater_than_equal", description,
+ "expected a number but got a ${type_actual}",
+ {type_actual:typeof actual});
+
+ assert(actual >= expected,
+ "assert_greater_than_equal", description,
+ "expected a number greater than or equal to ${expected} but got ${actual}",
+ {expected:expected, actual:actual});
+ }
+ expose_assert(assert_greater_than_equal, "assert_greater_than_equal");
+
+ /**
+ * Assert that ``actual`` is a number greater than or equal to ``lower`` and less
+ * than or equal to ``upper``.
+ *
+ * @param {number} actual - Test value.
+ * @param {number} lower - Number that ``actual`` must be greater than or equal to.
+ * @param {number} upper - Number that ``actual`` must be less than or equal to.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_between_inclusive(actual, lower, upper, description)
+ {
+ /*
+ * Test if a primitive number is between to two others or equal to either of them
+ */
+ assert(typeof actual === "number",
+ "assert_between_inclusive", description,
+ "expected a number but got a ${type_actual}",
+ {type_actual:typeof actual});
+
+ assert(actual >= lower && actual <= upper,
+ "assert_between_inclusive", description,
+ "expected a number greater than or equal to ${lower} " +
+ "and less than or equal to ${upper} but got ${actual}",
+ {lower:lower, upper:upper, actual:actual});
+ }
+ expose_assert(assert_between_inclusive, "assert_between_inclusive");
+
+ /**
+ * 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.
+ */
+ 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});
+ }
+ expose_assert(assert_regexp_match, "assert_regexp_match");
+
+ /**
+ * Assert that the class string of ``object`` as returned in
+ * ``Object.prototype.toString`` is equal to ``class_name``.
+ *
+ * @param {Object} object - Object to stringify.
+ * @param {string} class_string - Expected class string for ``object``.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_class_string(object, class_string, description) {
+ var actual = {}.toString.call(object);
+ var expected = "[object " + class_string + "]";
+ assert(same_value(actual, expected), "assert_class_string", description,
+ "expected ${expected} but got ${actual}",
+ {expected:expected, actual:actual});
+ }
+ expose_assert(assert_class_string, "assert_class_string");
+
+ /**
+ * Assert that ``object`` has an own property with name ``property_name``.
+ *
+ * @param {Object} object - Object that should have the given property.
+ * @param {string} property_name - Expected property name.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_own_property(object, property_name, description) {
+ assert(object.hasOwnProperty(property_name),
+ "assert_own_property", description,
+ "expected property ${p} missing", {p:property_name});
+ }
+ expose_assert(assert_own_property, "assert_own_property");
+
+ /**
+ * Assert that ``object`` does not have an own property with name ``property_name``.
+ *
+ * @param {Object} object - Object that should not have the given property.
+ * @param {string} property_name - Property name to test.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_not_own_property(object, property_name, description) {
+ assert(!object.hasOwnProperty(property_name),
+ "assert_not_own_property", description,
+ "unexpected property ${p} is found on object", {p:property_name});
+ }
+ expose_assert(assert_not_own_property, "assert_not_own_property");
+
+ function _assert_inherits(name) {
+ return function (object, property_name, description)
+ {
+ assert((typeof object === "object" && object !== null) ||
+ typeof object === "function" ||
+ // Or has [[IsHTMLDDA]] slot
+ String(object) === "[object HTMLAllCollection]",
+ name, description,
+ "provided value is not an object");
+
+ assert("hasOwnProperty" in object,
+ name, description,
+ "provided value is an object but has no hasOwnProperty method");
+
+ assert(!object.hasOwnProperty(property_name),
+ name, description,
+ "property ${p} found on object expected in prototype chain",
+ {p:property_name});
+
+ assert(property_name in object,
+ name, description,
+ "property ${p} not found in prototype chain",
+ {p:property_name});
+ };
+ }
+
+ /**
+ * Assert that ``object`` does not have an own property with name
+ * ``property_name``, but inherits one through the prototype chain.
+ *
+ * @param {Object} object - Object that should have the given property in its prototype chain.
+ * @param {string} property_name - Expected property name.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_inherits(object, property_name, description) {
+ return _assert_inherits("assert_inherits")(object, property_name, description);
+ }
+ expose_assert(assert_inherits, "assert_inherits");
+
+ /**
+ * Alias for :js:func:`insert_inherits`.
+ *
+ * @param {Object} object - Object that should have the given property in its prototype chain.
+ * @param {string} property_name - Expected property name.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_idl_attribute(object, property_name, description) {
+ return _assert_inherits("assert_idl_attribute")(object, property_name, description);
+ }
+ expose_assert(assert_idl_attribute, "assert_idl_attribute");
+
+
+ /**
+ * Assert that ``object`` has a property named ``property_name`` and that the property is readonly.
+ *
+ * Note: The implementation tries to update the named property, so
+ * any side effects of updating will be triggered. Users are
+ * encouraged to instead inspect the property descriptor of ``property_name`` on ``object``.
+ *
+ * @param {Object} object - Object that should have the given property in its prototype chain.
+ * @param {string} property_name - Expected property name.
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_readonly(object, property_name, description)
+ {
+ var initial_value = object[property_name];
+ try {
+ //Note that this can have side effects in the case where
+ //the property has PutForwards
+ object[property_name] = initial_value + "a"; //XXX use some other value here?
+ assert(same_value(object[property_name], initial_value),
+ "assert_readonly", description,
+ "changing property ${p} succeeded",
+ {p:property_name});
+ } finally {
+ object[property_name] = initial_value;
+ }
+ }
+ expose_assert(assert_readonly, "assert_readonly");
+
+ /**
+ * Assert a JS Error with the expected constructor is thrown.
+ *
+ * @param {object} constructor The expected exception constructor.
+ * @param {Function} func Function which should throw.
+ * @param {string} [description] Error description for the case that the error is not thrown.
+ */
+ function assert_throws_js(constructor, func, description)
+ {
+ assert_throws_js_impl(constructor, func, description,
+ "assert_throws_js");
+ }
+ expose_assert(assert_throws_js, "assert_throws_js");
+
+ /**
+ * Like assert_throws_js but allows specifying the assertion type
+ * (assert_throws_js or promise_rejects_js, in practice).
+ */
+ function assert_throws_js_impl(constructor, func, description,
+ assertion_type)
+ {
+ try {
+ func.call(this);
+ assert(false, assertion_type, description,
+ "${func} did not throw", {func:func});
+ } catch (e) {
+ if (e instanceof AssertionError) {
+ throw e;
+ }
+
+ // Basic sanity-checks on the thrown exception.
+ assert(typeof e === "object",
+ assertion_type, description,
+ "${func} threw ${e} with type ${type}, not an object",
+ {func:func, e:e, type:typeof e});
+
+ assert(e !== null,
+ assertion_type, description,
+ "${func} threw null, not an object",
+ {func:func});
+
+ // Basic sanity-check on the passed-in constructor
+ assert(typeof constructor == "function",
+ assertion_type, description,
+ "${constructor} is not a constructor",
+ {constructor:constructor});
+ var obj = constructor;
+ while (obj) {
+ if (typeof obj === "function" &&
+ obj.name === "Error") {
+ break;
+ }
+ obj = Object.getPrototypeOf(obj);
+ }
+ assert(obj != null,
+ assertion_type, description,
+ "${constructor} is not an Error subtype",
+ {constructor:constructor});
+
+ // And checking that our exception is reasonable
+ assert(e.constructor === constructor &&
+ e.name === constructor.name,
+ assertion_type, description,
+ "${func} threw ${actual} (${actual_name}) expected instance of ${expected} (${expected_name})",
+ {func:func, actual:e, actual_name:e.name,
+ expected:constructor,
+ expected_name:constructor.name});
+ }
+ }
+
+ // TODO: Figure out how to document the overloads better.
+ // sphinx-js doesn't seem to handle @variation correctly,
+ // and only expects a single JSDoc entry per function.
+ /**
+ * Assert a DOMException with the expected type is thrown.
+ *
+ * There are two ways of calling assert_throws_dom:
+ *
+ * 1) If the DOMException is expected to come from the current global, the
+ * second argument should be the function expected to throw and a third,
+ * optional, argument is the assertion description.
+ *
+ * 2) If the DOMException is expected to come from some other global, the
+ * second argument should be the DOMException constructor from that global,
+ * the third argument the function expected to throw, and the fourth, optional,
+ * argument the assertion description.
+ *
+ * @param {number|string} type - The expected exception name or
+ * code. See the `table of names and codes
+ * <https://webidl.spec.whatwg.org/#dfn-error-names-table>`_. If a
+ * number is passed it should be one of the numeric code values in
+ * that table (e.g. 3, 4, etc). If a string is passed it can
+ * either be an exception name (e.g. "HierarchyRequestError",
+ * "WrongDocumentError") or the name of the corresponding error
+ * code (e.g. "``HIERARCHY_REQUEST_ERR``", "``WRONG_DOCUMENT_ERR``").
+ * @param {Function} descriptionOrFunc - The function expected to
+ * throw (if the exception comes from another global), or the
+ * optional description of the condition being tested (if the
+ * exception comes from the current global).
+ * @param {string} [description] - Description of the condition
+ * being tested (if the exception comes from another global).
+ *
+ */
+ function assert_throws_dom(type, funcOrConstructor, descriptionOrFunc, maybeDescription)
+ {
+ let constructor, func, description;
+ if (funcOrConstructor.name === "DOMException") {
+ constructor = funcOrConstructor;
+ func = descriptionOrFunc;
+ description = maybeDescription;
+ } else {
+ constructor = self.DOMException;
+ func = funcOrConstructor;
+ description = descriptionOrFunc;
+ assert(maybeDescription === undefined,
+ "Too many args pased to no-constructor version of assert_throws_dom");
+ }
+ assert_throws_dom_impl(type, func, description, "assert_throws_dom", constructor)
+ }
+ expose_assert(assert_throws_dom, "assert_throws_dom");
+
+ /**
+ * Similar to assert_throws_dom but allows specifying the assertion type
+ * (assert_throws_dom or promise_rejects_dom, in practice). The
+ * "constructor" argument must be the DOMException constructor from the
+ * global we expect the exception to come from.
+ */
+ function assert_throws_dom_impl(type, func, description, assertion_type, constructor)
+ {
+ try {
+ func.call(this);
+ assert(false, assertion_type, description,
+ "${func} did not throw", {func:func});
+ } catch (e) {
+ if (e instanceof AssertionError) {
+ throw e;
+ }
+
+ // Basic sanity-checks on the thrown exception.
+ assert(typeof e === "object",
+ assertion_type, description,
+ "${func} threw ${e} with type ${type}, not an object",
+ {func:func, e:e, type:typeof e});
+
+ assert(e !== null,
+ assertion_type, description,
+ "${func} threw null, not an object",
+ {func:func});
+
+ // Sanity-check our type
+ assert(typeof type == "number" ||
+ typeof type == "string",
+ assertion_type, description,
+ "${type} is not a number or string",
+ {type:type});
+
+ var codename_name_map = {
+ INDEX_SIZE_ERR: 'IndexSizeError',
+ HIERARCHY_REQUEST_ERR: 'HierarchyRequestError',
+ WRONG_DOCUMENT_ERR: 'WrongDocumentError',
+ INVALID_CHARACTER_ERR: 'InvalidCharacterError',
+ NO_MODIFICATION_ALLOWED_ERR: 'NoModificationAllowedError',
+ NOT_FOUND_ERR: 'NotFoundError',
+ NOT_SUPPORTED_ERR: 'NotSupportedError',
+ INUSE_ATTRIBUTE_ERR: 'InUseAttributeError',
+ INVALID_STATE_ERR: 'InvalidStateError',
+ SYNTAX_ERR: 'SyntaxError',
+ INVALID_MODIFICATION_ERR: 'InvalidModificationError',
+ NAMESPACE_ERR: 'NamespaceError',
+ INVALID_ACCESS_ERR: 'InvalidAccessError',
+ TYPE_MISMATCH_ERR: 'TypeMismatchError',
+ SECURITY_ERR: 'SecurityError',
+ NETWORK_ERR: 'NetworkError',
+ ABORT_ERR: 'AbortError',
+ URL_MISMATCH_ERR: 'URLMismatchError',
+ QUOTA_EXCEEDED_ERR: 'QuotaExceededError',
+ TIMEOUT_ERR: 'TimeoutError',
+ INVALID_NODE_TYPE_ERR: 'InvalidNodeTypeError',
+ DATA_CLONE_ERR: 'DataCloneError'
+ };
+
+ var name_code_map = {
+ IndexSizeError: 1,
+ HierarchyRequestError: 3,
+ WrongDocumentError: 4,
+ InvalidCharacterError: 5,
+ NoModificationAllowedError: 7,
+ NotFoundError: 8,
+ NotSupportedError: 9,
+ InUseAttributeError: 10,
+ InvalidStateError: 11,
+ SyntaxError: 12,
+ InvalidModificationError: 13,
+ NamespaceError: 14,
+ InvalidAccessError: 15,
+ TypeMismatchError: 17,
+ SecurityError: 18,
+ NetworkError: 19,
+ AbortError: 20,
+ URLMismatchError: 21,
+ QuotaExceededError: 22,
+ TimeoutError: 23,
+ InvalidNodeTypeError: 24,
+ DataCloneError: 25,
+
+ EncodingError: 0,
+ NotReadableError: 0,
+ UnknownError: 0,
+ ConstraintError: 0,
+ DataError: 0,
+ TransactionInactiveError: 0,
+ ReadOnlyError: 0,
+ VersionError: 0,
+ OperationError: 0,
+ NotAllowedError: 0,
+ OptOutError: 0
+ };
+
+ var code_name_map = {};
+ for (var key in name_code_map) {
+ if (name_code_map[key] > 0) {
+ code_name_map[name_code_map[key]] = key;
+ }
+ }
+
+ var required_props = {};
+ var name;
+
+ if (typeof type === "number") {
+ if (type === 0) {
+ throw new AssertionError('Test bug: ambiguous DOMException code 0 passed to assert_throws_dom()');
+ } else if (!(type in code_name_map)) {
+ throw new AssertionError('Test bug: unrecognized DOMException code "' + type + '" passed to assert_throws_dom()');
+ }
+ name = code_name_map[type];
+ required_props.code = type;
+ } else if (typeof type === "string") {
+ name = type in codename_name_map ? codename_name_map[type] : type;
+ if (!(name in name_code_map)) {
+ throw new AssertionError('Test bug: unrecognized DOMException code name or name "' + type + '" passed to assert_throws_dom()');
+ }
+
+ required_props.code = name_code_map[name];
+ }
+
+ if (required_props.code === 0 ||
+ ("name" in e &&
+ e.name !== e.name.toUpperCase() &&
+ e.name !== "DOMException")) {
+ // New style exception: also test the name property.
+ required_props.name = name;
+ }
+
+ for (var prop in required_props) {
+ assert(prop in e && e[prop] == required_props[prop],
+ assertion_type, description,
+ "${func} threw ${e} that is not a DOMException " + type + ": property ${prop} is equal to ${actual}, expected ${expected}",
+ {func:func, e:e, prop:prop, actual:e[prop], expected:required_props[prop]});
+ }
+
+ // Check that the exception is from the right global. This check is last
+ // so more specific, and more informative, checks on the properties can
+ // happen in case a totally incorrect exception is thrown.
+ assert(e.constructor === constructor,
+ assertion_type, description,
+ "${func} threw an exception from the wrong global",
+ {func});
+
+ }
+ }
+
+ /**
+ * Assert the provided value is thrown.
+ *
+ * @param {value} exception The expected exception.
+ * @param {Function} func Function which should throw.
+ * @param {string} [description] Error description for the case that the error is not thrown.
+ */
+ function assert_throws_exactly(exception, func, description)
+ {
+ assert_throws_exactly_impl(exception, func, description,
+ "assert_throws_exactly");
+ }
+ expose_assert(assert_throws_exactly, "assert_throws_exactly");
+
+ /**
+ * Like assert_throws_exactly but allows specifying the assertion type
+ * (assert_throws_exactly or promise_rejects_exactly, in practice).
+ */
+ function assert_throws_exactly_impl(exception, func, description,
+ assertion_type)
+ {
+ try {
+ func.call(this);
+ assert(false, assertion_type, description,
+ "${func} did not throw", {func:func});
+ } catch (e) {
+ if (e instanceof AssertionError) {
+ throw e;
+ }
+
+ assert(same_value(e, exception), assertion_type, description,
+ "${func} threw ${e} but we expected it to throw ${exception}",
+ {func:func, e:e, exception:exception});
+ }
+ }
+
+ /**
+ * Asserts if called. Used to ensure that a specific codepath is
+ * not taken e.g. that an error event isn't fired.
+ *
+ * @param {string} [description] - Description of the condition being tested.
+ */
+ function assert_unreached(description) {
+ assert(false, "assert_unreached", description,
+ "Reached unreachable code");
+ }
+ expose_assert(assert_unreached, "assert_unreached");
+
+ /**
+ * @callback AssertFunc
+ * @param {Any} actual
+ * @param {Any} expected
+ * @param {Any[]} args
+ */
+
+ /**
+ * Asserts that ``actual`` matches at least one value of ``expected``
+ * according to a comparison defined by ``assert_func``.
+ *
+ * Note that tests with multiple allowed pass conditions are bad
+ * practice unless the spec specifically allows multiple
+ * behaviours. Test authors should not use this method simply to
+ * hide UA bugs.
+ *
+ * @param {AssertFunc} assert_func - Function to compare actual
+ * and expected. It must throw when the comparison fails and
+ * return when the comparison passes.
+ * @param {Any} actual - Test value.
+ * @param {Array} expected_array - Array of possible expected values.
+ * @param {Any[]} args - Additional arguments to pass to ``assert_func``.
+ */
+ function assert_any(assert_func, actual, expected_array, ...args)
+ {
+ var errors = [];
+ var passed = false;
+ forEach(expected_array,
+ function(expected)
+ {
+ try {
+ assert_func.apply(this, [actual, expected].concat(args));
+ passed = true;
+ } catch (e) {
+ errors.push(e.message);
+ }
+ });
+ if (!passed) {
+ throw new AssertionError(errors.join("\n\n"));
+ }
+ }
+ // FIXME: assert_any cannot use expose_assert, because assert_wrapper does
+ // not support nested assert calls (e.g. to assert_func). We need to
+ // support bypassing assert_wrapper for the inner asserts here.
+ expose(assert_any, "assert_any");
+
+ /**
+ * 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(window.Foo, 'Foo is not supported');
+ *
+ * @param {object} condition The truthy value to test
+ * @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")
+
+ /**
+ * Assert that an optional 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 an explicitly optional spec or
+ * spec feature. For example:
+ *
+ * assert_implements_optional(video.canPlayType("video/webm"),
+ * "webm video playback not supported");
+ *
+ * @param {object} condition The truthy value to test
+ * @param {string} [description] Error description for the case that the condition is not truthy.
+ */
+ function assert_implements_optional(condition, description) {
+ if (!condition) {
+ throw new OptionalFeatureUnsupportedError(description);
+ }
+ }
+ expose_assert(assert_implements_optional, "assert_implements_optional");
+
+ /**
+ * @class
+ *
+ * A single subtest. A Test is not constructed directly but via the
+ * :js:func:`test`, :js:func:`async_test` or :js:func:`promise_test` functions.
+ *
+ * @param {string} name - This must be unique in a given file and must be
+ * invariant between runs.
+ *
+ */
+ function Test(name, properties)
+ {
+ if (tests.file_is_test && tests.tests.length) {
+ throw new Error("Tried to create a test with file_is_test");
+ }
+ /** The test name. */
+ this.name = name;
+
+ this.phase = (tests.is_aborted || tests.phase === tests.phases.COMPLETE) ?
+ this.phases.COMPLETE : this.phases.INITIAL;
+
+ /** The test status code.*/
+ this.status = this.NOTRUN;
+ this.timeout_id = null;
+ this.index = null;
+
+ this.properties = properties || {};
+ this.timeout_length = settings.test_timeout;
+ if (this.timeout_length !== null) {
+ this.timeout_length *= tests.timeout_multiplier;
+ }
+
+ /** A message indicating the reason for test failure. */
+ this.message = null;
+ /** Stack trace in case of failure. */
+ this.stack = null;
+
+ this.steps = [];
+ this._is_promise_test = false;
+
+ this.cleanup_callbacks = [];
+ this._user_defined_cleanup_count = 0;
+ this._done_callbacks = [];
+
+ if (typeof AbortController === "function") {
+ this._abortController = new AbortController();
+ }
+
+ // Tests declared following harness completion are likely an indication
+ // of a programming error, but they cannot be reported
+ // deterministically.
+ if (tests.phase === tests.phases.COMPLETE) {
+ return;
+ }
+
+ tests.push(this);
+ }
+
+ /**
+ * Enum of possible test statuses.
+ *
+ * :values:
+ * - ``PASS``
+ * - ``FAIL``
+ * - ``TIMEOUT``
+ * - ``NOTRUN``
+ * - ``PRECONDITION_FAILED``
+ */
+ Test.statuses = {
+ PASS:0,
+ FAIL:1,
+ TIMEOUT:2,
+ NOTRUN:3,
+ PRECONDITION_FAILED:4
+ };
+
+ Test.prototype = merge({}, Test.statuses);
+
+ Test.prototype.phases = {
+ INITIAL:0,
+ STARTED:1,
+ HAS_RESULT:2,
+ CLEANING:3,
+ COMPLETE:4
+ };
+
+ Test.prototype.status_formats = {
+ 0: "Pass",
+ 1: "Fail",
+ 2: "Timeout",
+ 3: "Not Run",
+ 4: "Optional Feature Unsupported",
+ }
+
+ Test.prototype.format_status = function() {
+ return this.status_formats[this.status];
+ }
+
+ Test.prototype.structured_clone = function()
+ {
+ if (!this._structured_clone) {
+ var msg = this.message;
+ msg = msg ? String(msg) : msg;
+ this._structured_clone = merge({
+ name:String(this.name),
+ properties:merge({}, this.properties),
+ phases:merge({}, this.phases)
+ }, Test.statuses);
+ }
+ this._structured_clone.status = this.status;
+ this._structured_clone.message = this.message;
+ this._structured_clone.stack = this.stack;
+ this._structured_clone.index = this.index;
+ this._structured_clone.phase = this.phase;
+ return this._structured_clone;
+ };
+
+ /**
+ * Run a single step of an ongoing test.
+ *
+ * @param {string} func - Callback function to run as a step. If
+ * this throws an :js:func:`AssertionError`, or any other
+ * exception, the :js:class:`Test` status is set to ``FAIL``.
+ * @param {Object} [this_obj] - The object to use as the this
+ * value when calling ``func``. Defaults to the :js:class:`Test` object.
+ */
+ Test.prototype.step = function(func, this_obj)
+ {
+ if (this.phase > this.phases.STARTED) {
+ return;
+ }
+
+ if (settings.debug && this.phase !== this.phases.STARTED) {
+ console.log("TEST START", this.name);
+ }
+ this.phase = this.phases.STARTED;
+ //If we don't get a result before the harness times out that will be a test timeout
+ this.set_status(this.TIMEOUT, "Test timed out");
+
+ tests.started = true;
+ tests.current_test = this;
+ tests.notify_test_state(this);
+
+ if (this.timeout_id === null) {
+ this.set_timeout();
+ }
+
+ this.steps.push(func);
+
+ if (arguments.length === 1) {
+ this_obj = this;
+ }
+
+ if (settings.debug) {
+ console.debug("TEST STEP", this.name);
+ }
+
+ try {
+ return func.apply(this_obj, Array.prototype.slice.call(arguments, 2));
+ } catch (e) {
+ if (this.phase >= this.phases.HAS_RESULT) {
+ return;
+ }
+ var status = e instanceof OptionalFeatureUnsupportedError ? this.PRECONDITION_FAILED : this.FAIL;
+ var message = String((typeof e === "object" && e !== null) ? e.message : e);
+ var stack = e.stack ? e.stack : null;
+
+ this.set_status(status, message, stack);
+ this.phase = this.phases.HAS_RESULT;
+ this.done();
+ } finally {
+ this.current_test = null;
+ }
+ };
+
+ /**
+ * Wrap a function so that it runs as a step of the current test.
+ *
+ * This allows creating a callback function that will run as a
+ * test step.
+ *
+ * @example
+ * let t = async_test("Example");
+ * onload = t.step_func(e => {
+ * assert_equals(e.name, "load");
+ * // Mark the test as complete.
+ * t.done();
+ * })
+ *
+ * @param {string} func - Function to run as a step. If this
+ * throws an :js:func:`AssertionError`, or any other exception,
+ * the :js:class:`Test` status is set to ``FAIL``.
+ * @param {Object} [this_obj] - The object to use as the this
+ * value when calling ``func``. Defaults to the :js:class:`Test` object.
+ */
+ Test.prototype.step_func = function(func, this_obj)
+ {
+ var test_this = this;
+
+ if (arguments.length === 1) {
+ this_obj = test_this;
+ }
+
+ return function()
+ {
+ return test_this.step.apply(test_this, [func, this_obj].concat(
+ Array.prototype.slice.call(arguments)));
+ };
+ };
+
+ /**
+ * Wrap a function so that it runs as a step of the current test,
+ * and automatically marks the test as complete if the function
+ * returns without error.
+ *
+ * @param {string} func - Function to run as a step. If this
+ * throws an :js:func:`AssertionError`, or any other exception,
+ * the :js:class:`Test` status is set to ``FAIL``. If it returns
+ * without error the status is set to ``PASS``.
+ * @param {Object} [this_obj] - The object to use as the this
+ * value when calling `func`. Defaults to the :js:class:`Test` object.
+ */
+ Test.prototype.step_func_done = function(func, this_obj)
+ {
+ var test_this = this;
+
+ if (arguments.length === 1) {
+ this_obj = test_this;
+ }
+
+ return function()
+ {
+ if (func) {
+ test_this.step.apply(test_this, [func, this_obj].concat(
+ Array.prototype.slice.call(arguments)));
+ }
+ test_this.done();
+ };
+ };
+
+ /**
+ * Return a function that automatically sets the current test to
+ * ``FAIL`` if it's called.
+ *
+ * @param {string} [description] - Error message to add to assert
+ * in case of failure.
+ *
+ */
+ Test.prototype.unreached_func = function(description)
+ {
+ return this.step_func(function() {
+ assert_unreached(description);
+ });
+ };
+
+ /**
+ * Run a function as a step of the test after a given timeout.
+ *
+ * This multiplies the timeout by the global timeout multiplier to
+ * account for the expected execution speed of the current test
+ * environment. For example ``test.step_timeout(f, 2000)`` with a
+ * timeout multiplier of 2 will wait for 4000ms before calling ``f``.
+ *
+ * In general it's encouraged to use :js:func:`Test.step_wait` or
+ * :js:func:`step_wait_func` in preference to this function where possible,
+ * as they provide better test performance.
+ *
+ * @param {Function} func - Function to run as a test
+ * step.
+ * @param {number} timeout - Time in ms to wait before running the
+ * test step. The actual wait time is ``timeout`` x
+ * ``timeout_multiplier``.
+ *
+ */
+ Test.prototype.step_timeout = function(func, timeout) {
+ var test_this = this;
+ var args = Array.prototype.slice.call(arguments, 2);
+ return setTimeout(this.step_func(function() {
+ return func.apply(test_this, args);
+ }), timeout * tests.timeout_multiplier);
+ };
+
+ /**
+ * Poll for a function to return true, and call a callback
+ * function once it does, or assert if a timeout is
+ * reached. This is preferred over a simple step_timeout
+ * whenever possible since it allows the timeout to be longer
+ * to reduce intermittents without compromising test execution
+ * speed when the condition is quickly met.
+ *
+ * @param {Function} cond A function taking no arguments and
+ * returning a boolean. The callback is called
+ * when this function returns true.
+ * @param {Function} func A function taking no arguments to call once
+ * the condition is met.
+ * @param {string} [description] Error message to add to assert in case of
+ * failure.
+ * @param {number} timeout Timeout in ms. This is multiplied by the global
+ * timeout_multiplier
+ * @param {number} interval Polling interval in ms
+ *
+ */
+ Test.prototype.step_wait_func = function(cond, func, description,
+ timeout=3000, interval=100) {
+ var timeout_full = timeout * tests.timeout_multiplier;
+ var remaining = Math.ceil(timeout_full / interval);
+ var test_this = this;
+
+ var wait_for_inner = test_this.step_func(() => {
+ if (cond()) {
+ func();
+ } else {
+ if(remaining === 0) {
+ assert(false, "step_wait_func", description,
+ "Timed out waiting on condition");
+ }
+ remaining--;
+ setTimeout(wait_for_inner, interval);
+ }
+ });
+
+ wait_for_inner();
+ };
+
+ /**
+ * Poll for a function to return true, and invoke a callback
+ * followed by this.done() once it does, or assert if a timeout
+ * is reached. This is preferred over a simple step_timeout
+ * whenever possible since it allows the timeout to be longer
+ * to reduce intermittents without compromising test execution speed
+ * when the condition is quickly met.
+ *
+ * @example
+ * async_test(t => {
+ * const popup = window.open("resources/coop-coep.py?coop=same-origin&coep=&navigate=about:blank");
+ * t.add_cleanup(() => popup.close());
+ * assert_equals(window, popup.opener);
+ *
+ * popup.onload = t.step_func(() => {
+ * assert_true(popup.location.href.endsWith("&navigate=about:blank"));
+ * // Use step_wait_func_done as about:blank cannot message back.
+ * t.step_wait_func_done(() => popup.location.href === "about:blank");
+ * });
+ * }, "Navigating a popup to about:blank");
+ *
+ * @param {Function} cond A function taking no arguments and
+ * returning a boolean. The callback is called
+ * when this function returns true.
+ * @param {Function} func A function taking no arguments to call once
+ * the condition is met.
+ * @param {string} [description] Error message to add to assert in case of
+ * failure.
+ * @param {number} timeout Timeout in ms. This is multiplied by the global
+ * timeout_multiplier
+ * @param {number} interval Polling interval in ms
+ *
+ */
+ Test.prototype.step_wait_func_done = function(cond, func, description,
+ timeout=3000, interval=100) {
+ this.step_wait_func(cond, () => {
+ if (func) {
+ func();
+ }
+ this.done();
+ }, description, timeout, interval);
+ };
+
+ /**
+ * Poll for a function to return true, and resolve a promise
+ * once it does, or assert if a timeout is reached. This is
+ * preferred over a simple step_timeout whenever possible
+ * since it allows the timeout to be longer to reduce
+ * intermittents without compromising test execution speed
+ * when the condition is quickly met.
+ *
+ * @example
+ * promise_test(async t => {
+ * // …
+ * await t.step_wait(() => frame.contentDocument === null, "Frame navigated to a cross-origin document");
+ * // …
+ * }, "");
+ *
+ * @param {Function} cond A function taking no arguments and
+ * returning a boolean.
+ * @param {string} [description] Error message to add to assert in case of
+ * failure.
+ * @param {number} timeout Timeout in ms. This is multiplied by the global
+ * timeout_multiplier
+ * @param {number} interval Polling interval in ms
+ * @returns {Promise} Promise resolved once cond is met.
+ *
+ */
+ Test.prototype.step_wait = function(cond, description, timeout=3000, interval=100) {
+ return new Promise(resolve => {
+ this.step_wait_func(cond, resolve, description, timeout, interval);
+ });
+ }
+
+ /*
+ * Private method for registering cleanup functions. `testharness.js`
+ * internals should use this method instead of the public `add_cleanup`
+ * method in order to hide implementation details from the harness status
+ * message in the case errors.
+ */
+ Test.prototype._add_cleanup = function(callback) {
+ this.cleanup_callbacks.push(callback);
+ };
+
+ /**
+ * Schedule a function to be run after the test result is known, regardless
+ * of passing or failing state.
+ *
+ * The behavior of this function will not
+ * influence the result of the test, but if an exception is thrown, the
+ * test harness will report an error.
+ *
+ * @param {Function} callback - The cleanup function to run. This
+ * is called with no arguments.
+ */
+ Test.prototype.add_cleanup = function(callback) {
+ this._user_defined_cleanup_count += 1;
+ this._add_cleanup(callback);
+ };
+
+ Test.prototype.set_timeout = function()
+ {
+ if (this.timeout_length !== null) {
+ var this_obj = this;
+ this.timeout_id = setTimeout(function()
+ {
+ this_obj.timeout();
+ }, this.timeout_length);
+ }
+ };
+
+ Test.prototype.set_status = function(status, message, stack)
+ {
+ this.status = status;
+ this.message = message;
+ this.stack = stack ? stack : null;
+ };
+
+ /**
+ * Manually set the test status to ``TIMEOUT``.
+ */
+ Test.prototype.timeout = function()
+ {
+ this.timeout_id = null;
+ this.set_status(this.TIMEOUT, "Test timed out");
+ this.phase = this.phases.HAS_RESULT;
+ this.done();
+ };
+
+ /**
+ * Manually set the test status to ``TIMEOUT``.
+ *
+ * Alias for `Test.timeout <#Test.timeout>`_.
+ */
+ Test.prototype.force_timeout = function() {
+ return this.timeout();
+ };
+
+ /**
+ * Mark the test as complete.
+ *
+ * This sets the test status to ``PASS`` if no other status was
+ * already recorded. Any subsequent attempts to run additional
+ * test steps will be ignored.
+ *
+ * After setting the test status any test cleanup functions will
+ * be run.
+ */
+ Test.prototype.done = function()
+ {
+ if (this.phase >= this.phases.CLEANING) {
+ return;
+ }
+
+ if (this.phase <= this.phases.STARTED) {
+ this.set_status(this.PASS, null);
+ }
+
+ if (global_scope.clearTimeout) {
+ clearTimeout(this.timeout_id);
+ }
+
+ if (settings.debug) {
+ console.log("TEST DONE",
+ this.status,
+ this.name);
+ }
+
+ this.cleanup();
+ };
+
+ function add_test_done_callback(test, callback)
+ {
+ if (test.phase === test.phases.COMPLETE) {
+ callback();
+ return;
+ }
+
+ test._done_callbacks.push(callback);
+ }
+
+ /*
+ * Invoke all specified cleanup functions. If one or more produce an error,
+ * the context is in an unpredictable state, so all further testing should
+ * be cancelled.
+ */
+ Test.prototype.cleanup = function() {
+ var errors = [];
+ var bad_value_count = 0;
+ function on_error(e) {
+ errors.push(e);
+ // Abort tests immediately so that tests declared within subsequent
+ // cleanup functions are not run.
+ tests.abort();
+ }
+ var this_obj = this;
+ var results = [];
+
+ this.phase = this.phases.CLEANING;
+
+ if (this._abortController) {
+ this._abortController.abort("Test cleanup");
+ }
+
+ forEach(this.cleanup_callbacks,
+ function(cleanup_callback) {
+ var result;
+
+ try {
+ result = cleanup_callback();
+ } catch (e) {
+ on_error(e);
+ return;
+ }
+
+ if (!is_valid_cleanup_result(this_obj, result)) {
+ bad_value_count += 1;
+ // Abort tests immediately so that tests declared
+ // within subsequent cleanup functions are not run.
+ tests.abort();
+ }
+
+ results.push(result);
+ });
+
+ if (!this._is_promise_test) {
+ cleanup_done(this_obj, errors, bad_value_count);
+ } else {
+ all_async(results,
+ function(result, done) {
+ if (result && typeof result.then === "function") {
+ result
+ .then(null, on_error)
+ .then(done);
+ } else {
+ done();
+ }
+ },
+ function() {
+ cleanup_done(this_obj, errors, bad_value_count);
+ });
+ }
+ };
+
+ /*
+ * Determine if the return value of a cleanup function is valid for a given
+ * test. Any test may return the value `undefined`. Tests created with
+ * `promise_test` may alternatively return "thenable" object values.
+ */
+ function is_valid_cleanup_result(test, result) {
+ if (result === undefined) {
+ return true;
+ }
+
+ if (test._is_promise_test) {
+ return result && typeof result.then === "function";
+ }
+
+ return false;
+ }
+
+ function cleanup_done(test, errors, bad_value_count) {
+ if (errors.length || bad_value_count) {
+ var total = test._user_defined_cleanup_count;
+
+ tests.status.status = tests.status.ERROR;
+ tests.status.stack = null;
+ tests.status.message = "Test named '" + test.name +
+ "' specified " + total +
+ " 'cleanup' function" + (total > 1 ? "s" : "");
+
+ if (errors.length) {
+ tests.status.message += ", and " + errors.length + " failed";
+ tests.status.stack = ((typeof errors[0] === "object" &&
+ errors[0].hasOwnProperty("stack")) ?
+ errors[0].stack : null);
+ }
+
+ if (bad_value_count) {
+ var type = test._is_promise_test ?
+ "non-thenable" : "non-undefined";
+ tests.status.message += ", and " + bad_value_count +
+ " returned a " + type + " value";
+ }
+
+ tests.status.message += ".";
+ }
+
+ test.phase = test.phases.COMPLETE;
+ tests.result(test);
+ forEach(test._done_callbacks,
+ function(callback) {
+ callback();
+ });
+ test._done_callbacks.length = 0;
+ }
+
+ /**
+ * Gives an AbortSignal that will be aborted when the test finishes.
+ */
+ Test.prototype.get_signal = function() {
+ if (!this._abortController) {
+ throw new Error("AbortController is not supported in this browser");
+ }
+ return this._abortController.signal;
+ }
+
+ /**
+ * A RemoteTest object mirrors a Test object on a remote worker. The
+ * associated RemoteWorker updates the RemoteTest object in response to
+ * received events. In turn, the RemoteTest object replicates these events
+ * on the local document. This allows listeners (test result reporting
+ * etc..) to transparently handle local and remote events.
+ */
+ function RemoteTest(clone) {
+ var this_obj = this;
+ Object.keys(clone).forEach(
+ function(key) {
+ this_obj[key] = clone[key];
+ });
+ this.index = null;
+ this.phase = this.phases.INITIAL;
+ this.update_state_from(clone);
+ this._done_callbacks = [];
+ tests.push(this);
+ }
+
+ RemoteTest.prototype.structured_clone = function() {
+ var clone = {};
+ Object.keys(this).forEach(
+ (function(key) {
+ var value = this[key];
+ // `RemoteTest` instances are responsible for managing
+ // their own "done" callback functions, so those functions
+ // are not relevant in other execution contexts. Because of
+ // this (and because Function values cannot be serialized
+ // for cross-realm transmittance), the property should not
+ // be considered when cloning instances.
+ if (key === '_done_callbacks' ) {
+ return;
+ }
+
+ if (typeof value === "object" && value !== null) {
+ clone[key] = merge({}, value);
+ } else {
+ clone[key] = value;
+ }
+ }).bind(this));
+ clone.phases = merge({}, this.phases);
+ return clone;
+ };
+
+ /**
+ * `RemoteTest` instances are objects which represent tests running in
+ * another realm. They do not define "cleanup" functions (if necessary,
+ * such functions are defined on the associated `Test` instance within the
+ * external realm). However, `RemoteTests` may have "done" callbacks (e.g.
+ * as attached by the `Tests` instance responsible for tracking the overall
+ * test status in the parent realm). The `cleanup` method delegates to
+ * `done` in order to ensure that such callbacks are invoked following the
+ * completion of the `RemoteTest`.
+ */
+ RemoteTest.prototype.cleanup = function() {
+ this.done();
+ };
+ RemoteTest.prototype.phases = Test.prototype.phases;
+ RemoteTest.prototype.update_state_from = function(clone) {
+ this.status = clone.status;
+ this.message = clone.message;
+ this.stack = clone.stack;
+ if (this.phase === this.phases.INITIAL) {
+ this.phase = this.phases.STARTED;
+ }
+ };
+ RemoteTest.prototype.done = function() {
+ this.phase = this.phases.COMPLETE;
+
+ forEach(this._done_callbacks,
+ function(callback) {
+ callback();
+ });
+ }
+
+ RemoteTest.prototype.format_status = function() {
+ return Test.prototype.status_formats[this.status];
+ }
+
+ /*
+ * A RemoteContext listens for test events from a remote test context, such
+ * as another window or a worker. These events are then used to construct
+ * and maintain RemoteTest objects that mirror the tests running in the
+ * remote context.
+ *
+ * An optional third parameter can be used as a predicate to filter incoming
+ * MessageEvents.
+ */
+ function RemoteContext(remote, message_target, message_filter) {
+ this.running = true;
+ this.started = false;
+ this.tests = new Array();
+ this.early_exception = null;
+
+ var this_obj = this;
+ // If remote context is cross origin assigning to onerror is not
+ // possible, so silently catch those errors.
+ try {
+ remote.onerror = function(error) { this_obj.remote_error(error); };
+ } catch (e) {
+ // Ignore.
+ }
+
+ // Keeping a reference to the remote object and the message handler until
+ // remote_done() is seen prevents the remote object and its message channel
+ // from going away before all the messages are dispatched.
+ this.remote = remote;
+ this.message_target = message_target;
+ this.message_handler = function(message) {
+ var passesFilter = !message_filter || message_filter(message);
+ // The reference to the `running` property in the following
+ // condition is unnecessary because that value is only set to
+ // `false` after the `message_handler` function has been
+ // unsubscribed.
+ // TODO: Simplify the condition by removing the reference.
+ if (this_obj.running && message.data && passesFilter &&
+ (message.data.type in this_obj.message_handlers)) {
+ this_obj.message_handlers[message.data.type].call(this_obj, message.data);
+ }
+ };
+
+ if (self.Promise) {
+ this.done = new Promise(function(resolve) {
+ this_obj.doneResolve = resolve;
+ });
+ }
+
+ this.message_target.addEventListener("message", this.message_handler);
+ }
+
+ RemoteContext.prototype.remote_error = function(error) {
+ if (error.preventDefault) {
+ error.preventDefault();
+ }
+
+ // Defer interpretation of errors until the testing protocol has
+ // started and the remote test's `allow_uncaught_exception` property
+ // is available.
+ if (!this.started) {
+ this.early_exception = error;
+ } else if (!this.allow_uncaught_exception) {
+ this.report_uncaught(error);
+ }
+ };
+
+ RemoteContext.prototype.report_uncaught = function(error) {
+ var message = error.message || String(error);
+ var filename = (error.filename ? " " + error.filename: "");
+ // FIXME: Display remote error states separately from main document
+ // error state.
+ tests.set_status(tests.status.ERROR,
+ "Error in remote" + filename + ": " + message,
+ error.stack);
+ };
+
+ RemoteContext.prototype.start = function(data) {
+ this.started = true;
+ this.allow_uncaught_exception = data.properties.allow_uncaught_exception;
+
+ if (this.early_exception && !this.allow_uncaught_exception) {
+ this.report_uncaught(this.early_exception);
+ }
+ };
+
+ RemoteContext.prototype.test_state = function(data) {
+ var remote_test = this.tests[data.test.index];
+ if (!remote_test) {
+ remote_test = new RemoteTest(data.test);
+ this.tests[data.test.index] = remote_test;
+ }
+ remote_test.update_state_from(data.test);
+ tests.notify_test_state(remote_test);
+ };
+
+ RemoteContext.prototype.test_done = function(data) {
+ var remote_test = this.tests[data.test.index];
+ remote_test.update_state_from(data.test);
+ remote_test.done();
+ tests.result(remote_test);
+ };
+
+ RemoteContext.prototype.remote_done = function(data) {
+ if (tests.status.status === null &&
+ data.status.status !== data.status.OK) {
+ tests.set_status(data.status.status, data.status.message, data.status.stack);
+ }
+
+ for (let assert of data.asserts) {
+ var record = new AssertRecord();
+ record.assert_name = assert.assert_name;
+ record.args = assert.args;
+ record.test = assert.test != null ? this.tests[assert.test.index] : null;
+ record.status = assert.status;
+ record.stack = assert.stack;
+ tests.asserts_run.push(record);
+ }
+
+ this.message_target.removeEventListener("message", this.message_handler);
+ this.running = false;
+
+ // If remote context is cross origin assigning to onerror is not
+ // possible, so silently catch those errors.
+ try {
+ this.remote.onerror = null;
+ } catch (e) {
+ // Ignore.
+ }
+
+ this.remote = null;
+ this.message_target = null;
+ if (this.doneResolve) {
+ this.doneResolve();
+ }
+
+ if (tests.all_done()) {
+ tests.complete();
+ }
+ };
+
+ RemoteContext.prototype.message_handlers = {
+ start: RemoteContext.prototype.start,
+ test_state: RemoteContext.prototype.test_state,
+ result: RemoteContext.prototype.test_done,
+ complete: RemoteContext.prototype.remote_done
+ };
+
+ /**
+ * @class
+ * Status of the overall harness
+ */
+ function TestsStatus()
+ {
+ /** The status code */
+ this.status = null;
+ /** Message in case of failure */
+ this.message = null;
+ /** Stack trace in case of an exception. */
+ this.stack = null;
+ }
+
+ /**
+ * Enum of possible harness statuses.
+ *
+ * :values:
+ * - ``OK``
+ * - ``ERROR``
+ * - ``TIMEOUT``
+ * - ``PRECONDITION_FAILED``
+ */
+ TestsStatus.statuses = {
+ OK:0,
+ ERROR:1,
+ TIMEOUT:2,
+ PRECONDITION_FAILED:3
+ };
+
+ TestsStatus.prototype = merge({}, TestsStatus.statuses);
+
+ TestsStatus.prototype.formats = {
+ 0: "OK",
+ 1: "Error",
+ 2: "Timeout",
+ 3: "Optional Feature Unsupported"
+ };
+
+ TestsStatus.prototype.structured_clone = function()
+ {
+ if (!this._structured_clone) {
+ var msg = this.message;
+ msg = msg ? String(msg) : msg;
+ this._structured_clone = merge({
+ status:this.status,
+ message:msg,
+ stack:this.stack
+ }, TestsStatus.statuses);
+ }
+ return this._structured_clone;
+ };
+
+ TestsStatus.prototype.format_status = function() {
+ return this.formats[this.status];
+ };
+
+ /**
+ * @class
+ * Record of an assert that ran.
+ *
+ * @param {Test} test - The test which ran the assert.
+ * @param {string} assert_name - The function name of the assert.
+ * @param {Any} args - The arguments passed to the assert function.
+ */
+ function AssertRecord(test, assert_name, args = []) {
+ /** Name of the assert that ran */
+ this.assert_name = assert_name;
+ /** Test that ran the assert */
+ this.test = test;
+ // Avoid keeping complex objects alive
+ /** Stringification of the arguments that were passed to the assert function */
+ this.args = args.map(x => format_value(x).replace(/\n/g, " "));
+ /** Status of the assert */
+ this.status = null;
+ }
+
+ AssertRecord.prototype.structured_clone = function() {
+ return {
+ assert_name: this.assert_name,
+ test: this.test ? this.test.structured_clone() : null,
+ args: this.args,
+ status: this.status,
+ };
+ };
+
+ function Tests()
+ {
+ this.tests = [];
+ this.num_pending = 0;
+
+ this.phases = {
+ INITIAL:0,
+ SETUP:1,
+ HAVE_TESTS:2,
+ HAVE_RESULTS:3,
+ COMPLETE:4
+ };
+ this.phase = this.phases.INITIAL;
+
+ this.properties = {};
+
+ this.wait_for_finish = false;
+ this.processing_callbacks = false;
+
+ this.allow_uncaught_exception = false;
+
+ this.file_is_test = false;
+ // This value is lazily initialized in order to avoid introducing a
+ // dependency on ECMAScript 2015 Promises to all tests.
+ this.promise_tests = null;
+ this.promise_setup_called = false;
+
+ this.timeout_multiplier = 1;
+ this.timeout_length = test_environment.test_timeout();
+ this.timeout_id = null;
+
+ this.start_callbacks = [];
+ this.test_state_callbacks = [];
+ this.test_done_callbacks = [];
+ this.all_done_callbacks = [];
+
+ this.hide_test_state = false;
+ this.pending_remotes = [];
+
+ this.current_test = null;
+ this.asserts_run = [];
+
+ // Track whether output is enabled, and thus whether or not we should
+ // track asserts.
+ //
+ // On workers we don't get properties set from testharnessreport.js, so
+ // we don't know whether or not to track asserts. To avoid the
+ // resulting performance hit, we assume we are not meant to. This means
+ // that assert tracking does not function on workers.
+ this.output = settings.output && 'document' in global_scope;
+
+ this.status = new TestsStatus();
+
+ var this_obj = this;
+
+ test_environment.add_on_loaded_callback(function() {
+ if (this_obj.all_done()) {
+ this_obj.complete();
+ }
+ });
+
+ this.set_timeout();
+ }
+
+ Tests.prototype.setup = function(func, properties)
+ {
+ if (this.phase >= this.phases.HAVE_RESULTS) {
+ return;
+ }
+
+ if (this.phase < this.phases.SETUP) {
+ this.phase = this.phases.SETUP;
+ }
+
+ this.properties = properties;
+
+ for (var p in properties) {
+ if (properties.hasOwnProperty(p)) {
+ var value = properties[p];
+ if (p == "allow_uncaught_exception") {
+ this.allow_uncaught_exception = value;
+ } else if (p == "explicit_done" && value) {
+ this.wait_for_finish = true;
+ } else if (p == "explicit_timeout" && value) {
+ this.timeout_length = null;
+ if (this.timeout_id)
+ {
+ clearTimeout(this.timeout_id);
+ }
+ } else if (p == "single_test" && value) {
+ this.set_file_is_test();
+ } else if (p == "timeout_multiplier") {
+ this.timeout_multiplier = value;
+ if (this.timeout_length) {
+ this.timeout_length *= this.timeout_multiplier;
+ }
+ } else if (p == "hide_test_state") {
+ this.hide_test_state = value;
+ } else if (p == "output") {
+ this.output = value;
+ } else if (p === "debug") {
+ settings.debug = value;
+ }
+ }
+ }
+
+ if (func) {
+ try {
+ func();
+ } catch (e) {
+ this.status.status = e instanceof OptionalFeatureUnsupportedError ? this.status.PRECONDITION_FAILED : this.status.ERROR;
+ this.status.message = String(e);
+ this.status.stack = e.stack ? e.stack : null;
+ this.complete();
+ }
+ }
+ this.set_timeout();
+ };
+
+ Tests.prototype.set_file_is_test = function() {
+ if (this.tests.length > 0) {
+ throw new Error("Tried to set file as test after creating a test");
+ }
+ this.wait_for_finish = true;
+ this.file_is_test = true;
+ // Create the test, which will add it to the list of tests
+ tests.current_test = async_test();
+ };
+
+ Tests.prototype.set_status = function(status, message, stack)
+ {
+ this.status.status = status;
+ this.status.message = message;
+ this.status.stack = stack ? stack : null;
+ };
+
+ Tests.prototype.set_timeout = function() {
+ if (global_scope.clearTimeout) {
+ var this_obj = this;
+ clearTimeout(this.timeout_id);
+ if (this.timeout_length !== null) {
+ this.timeout_id = setTimeout(function() {
+ this_obj.timeout();
+ }, this.timeout_length);
+ }
+ }
+ };
+
+ Tests.prototype.timeout = function() {
+ var test_in_cleanup = null;
+
+ if (this.status.status === null) {
+ forEach(this.tests,
+ function(test) {
+ // No more than one test is expected to be in the
+ // "CLEANUP" phase at any time
+ if (test.phase === test.phases.CLEANING) {
+ test_in_cleanup = test;
+ }
+
+ test.phase = test.phases.COMPLETE;
+ });
+
+ // Timeouts that occur while a test is in the "cleanup" phase
+ // indicate that some global state was not properly reverted. This
+ // invalidates the overall test execution, so the timeout should be
+ // reported as an error and cancel the execution of any remaining
+ // tests.
+ if (test_in_cleanup) {
+ this.status.status = this.status.ERROR;
+ this.status.message = "Timeout while running cleanup for " +
+ "test named \"" + test_in_cleanup.name + "\".";
+ tests.status.stack = null;
+ } else {
+ this.status.status = this.status.TIMEOUT;
+ }
+ }
+
+ this.complete();
+ };
+
+ Tests.prototype.end_wait = function()
+ {
+ this.wait_for_finish = false;
+ if (this.all_done()) {
+ this.complete();
+ }
+ };
+
+ Tests.prototype.push = function(test)
+ {
+ if (this.phase < this.phases.HAVE_TESTS) {
+ this.start();
+ }
+ this.num_pending++;
+ test.index = this.tests.push(test);
+ this.notify_test_state(test);
+ };
+
+ Tests.prototype.notify_test_state = function(test) {
+ var this_obj = this;
+ forEach(this.test_state_callbacks,
+ function(callback) {
+ callback(test, this_obj);
+ });
+ };
+
+ Tests.prototype.all_done = function() {
+ return (this.tests.length > 0 || this.pending_remotes.length > 0) &&
+ test_environment.all_loaded &&
+ (this.num_pending === 0 || this.is_aborted) && !this.wait_for_finish &&
+ !this.processing_callbacks &&
+ !this.pending_remotes.some(function(w) { return w.running; });
+ };
+
+ Tests.prototype.start = function() {
+ this.phase = this.phases.HAVE_TESTS;
+ this.notify_start();
+ };
+
+ Tests.prototype.notify_start = function() {
+ var this_obj = this;
+ forEach (this.start_callbacks,
+ function(callback)
+ {
+ callback(this_obj.properties);
+ });
+ };
+
+ Tests.prototype.result = function(test)
+ {
+ // If the harness has already transitioned beyond the `HAVE_RESULTS`
+ // phase, subsequent tests should not cause it to revert.
+ if (this.phase <= this.phases.HAVE_RESULTS) {
+ this.phase = this.phases.HAVE_RESULTS;
+ }
+ this.num_pending--;
+ this.notify_result(test);
+ };
+
+ Tests.prototype.notify_result = function(test) {
+ var this_obj = this;
+ this.processing_callbacks = true;
+ forEach(this.test_done_callbacks,
+ function(callback)
+ {
+ callback(test, this_obj);
+ });
+ this.processing_callbacks = false;
+ if (this_obj.all_done()) {
+ this_obj.complete();
+ }
+ };
+
+ Tests.prototype.complete = function() {
+ if (this.phase === this.phases.COMPLETE) {
+ return;
+ }
+ var this_obj = this;
+ var all_complete = function() {
+ this_obj.phase = this_obj.phases.COMPLETE;
+ this_obj.notify_complete();
+ };
+ var incomplete = filter(this.tests,
+ function(test) {
+ return test.phase < test.phases.COMPLETE;
+ });
+
+ /**
+ * To preserve legacy behavior, overall test completion must be
+ * signaled synchronously.
+ */
+ if (incomplete.length === 0) {
+ all_complete();
+ return;
+ }
+
+ all_async(incomplete,
+ function(test, testDone)
+ {
+ if (test.phase === test.phases.INITIAL) {
+ test.phase = test.phases.COMPLETE;
+ testDone();
+ } else {
+ add_test_done_callback(test, testDone);
+ test.cleanup();
+ }
+ },
+ all_complete);
+ };
+
+ Tests.prototype.set_assert = function(assert_name, args) {
+ this.asserts_run.push(new AssertRecord(this.current_test, assert_name, args))
+ }
+
+ Tests.prototype.set_assert_status = function(index, status, stack) {
+ let assert_record = this.asserts_run[index];
+ assert_record.status = status;
+ assert_record.stack = stack;
+ }
+
+ /**
+ * Update the harness status to reflect an unrecoverable harness error that
+ * should cancel all further testing. Update all previously-defined tests
+ * which have not yet started to indicate that they will not be executed.
+ */
+ Tests.prototype.abort = function() {
+ this.status.status = this.status.ERROR;
+ this.is_aborted = true;
+
+ forEach(this.tests,
+ function(test) {
+ if (test.phase === test.phases.INITIAL) {
+ test.phase = test.phases.COMPLETE;
+ }
+ });
+ };
+
+ /*
+ * Determine if any tests share the same `name` property. Return an array
+ * containing the names of any such duplicates.
+ */
+ Tests.prototype.find_duplicates = function() {
+ var names = Object.create(null);
+ var duplicates = [];
+
+ forEach (this.tests,
+ function(test)
+ {
+ if (test.name in names && duplicates.indexOf(test.name) === -1) {
+ duplicates.push(test.name);
+ }
+ names[test.name] = true;
+ });
+
+ return duplicates;
+ };
+
+ function code_unit_str(char) {
+ return 'U+' + char.charCodeAt(0).toString(16);
+ }
+
+ function sanitize_unpaired_surrogates(str) {
+ return str.replace(
+ /([\ud800-\udbff]+)(?![\udc00-\udfff])|(^|[^\ud800-\udbff])([\udc00-\udfff]+)/g,
+ function(_, low, prefix, high) {
+ var output = prefix || ""; // prefix may be undefined
+ var string = low || high; // only one of these alternates can match
+ for (var i = 0; i < string.length; i++) {
+ output += code_unit_str(string[i]);
+ }
+ return output;
+ });
+ }
+
+ function sanitize_all_unpaired_surrogates(tests) {
+ forEach (tests,
+ function (test)
+ {
+ var sanitized = sanitize_unpaired_surrogates(test.name);
+
+ if (test.name !== sanitized) {
+ test.name = sanitized;
+ delete test._structured_clone;
+ }
+ });
+ }
+
+ Tests.prototype.notify_complete = function() {
+ var this_obj = this;
+ var duplicates;
+
+ if (this.status.status === null) {
+ duplicates = this.find_duplicates();
+
+ // Some transports adhere to UTF-8's restriction on unpaired
+ // surrogates. Sanitize the titles so that the results can be
+ // consistently sent via all transports.
+ sanitize_all_unpaired_surrogates(this.tests);
+
+ // Test names are presumed to be unique within test files--this
+ // allows consumers to use them for identification purposes.
+ // Duplicated names violate this expectation and should therefore
+ // be reported as an error.
+ if (duplicates.length) {
+ this.status.status = this.status.ERROR;
+ this.status.message =
+ duplicates.length + ' duplicate test name' +
+ (duplicates.length > 1 ? 's' : '') + ': "' +
+ duplicates.join('", "') + '"';
+ } else {
+ this.status.status = this.status.OK;
+ }
+ }
+
+ forEach (this.all_done_callbacks,
+ function(callback)
+ {
+ callback(this_obj.tests, this_obj.status, this_obj.asserts_run);
+ });
+ };
+
+ /*
+ * Constructs a RemoteContext that tracks tests from a specific worker.
+ */
+ Tests.prototype.create_remote_worker = function(worker) {
+ var message_port;
+
+ if (is_service_worker(worker)) {
+ message_port = navigator.serviceWorker;
+ worker.postMessage({type: "connect"});
+ } else if (is_shared_worker(worker)) {
+ message_port = worker.port;
+ message_port.start();
+ } else {
+ message_port = worker;
+ }
+
+ return new RemoteContext(worker, message_port);
+ };
+
+ /*
+ * Constructs a RemoteContext that tracks tests from a specific window.
+ */
+ Tests.prototype.create_remote_window = function(remote) {
+ remote.postMessage({type: "getmessages"}, "*");
+ return new RemoteContext(
+ remote,
+ window,
+ function(msg) {
+ return msg.source === remote;
+ }
+ );
+ };
+
+ Tests.prototype.fetch_tests_from_worker = function(worker) {
+ if (this.phase >= this.phases.COMPLETE) {
+ return;
+ }
+
+ var remoteContext = this.create_remote_worker(worker);
+ this.pending_remotes.push(remoteContext);
+ return remoteContext.done;
+ };
+
+ /**
+ * Get test results from a worker and include them in the current test.
+ *
+ * @param {Worker|SharedWorker|ServiceWorker|MessagePort} port -
+ * Either a worker object or a port connected to a worker which is
+ * running tests..
+ * @returns {Promise} - A promise that's resolved once all the remote tests are complete.
+ */
+ function fetch_tests_from_worker(port) {
+ return tests.fetch_tests_from_worker(port);
+ }
+ expose(fetch_tests_from_worker, 'fetch_tests_from_worker');
+
+ Tests.prototype.fetch_tests_from_window = function(remote) {
+ if (this.phase >= this.phases.COMPLETE) {
+ return;
+ }
+
+ var remoteContext = this.create_remote_window(remote);
+ this.pending_remotes.push(remoteContext);
+ return remoteContext.done;
+ };
+
+ /**
+ * Aggregate tests from separate windows or iframes
+ * into the current document as if they were all part of the same test file.
+ *
+ * The document of the second window (or iframe) should include
+ * ``testharness.js``, but not ``testharnessreport.js``, and use
+ * :js:func:`test`, :js:func:`async_test`, and :js:func:`promise_test` in
+ * the usual manner.
+ *
+ * @param {Window} window - The window to fetch tests from.
+ */
+ function fetch_tests_from_window(window) {
+ return tests.fetch_tests_from_window(window);
+ }
+ expose(fetch_tests_from_window, 'fetch_tests_from_window');
+
+ /**
+ * Get test results from a shadow realm and include them in the current test.
+ *
+ * @param {ShadowRealm} realm - A shadow realm also running the test harness
+ * @returns {Promise} - A promise that's resolved once all the remote tests are complete.
+ */
+ function fetch_tests_from_shadow_realm(realm) {
+ var chan = new MessageChannel();
+ function receiveMessage(msg_json) {
+ chan.port1.postMessage(JSON.parse(msg_json));
+ }
+ var done = tests.fetch_tests_from_worker(chan.port2);
+ realm.evaluate("begin_shadow_realm_tests")(receiveMessage);
+ chan.port2.start();
+ return done;
+ }
+ expose(fetch_tests_from_shadow_realm, 'fetch_tests_from_shadow_realm');
+
+ /**
+ * Begin running tests in this shadow realm test harness.
+ *
+ * To be called after all tests have been loaded; it is an error to call
+ * this more than once or in a non-Shadow Realm environment
+ *
+ * @param {Function} postMessage - A function to send test updates to the
+ * incubating realm-- accepts JSON-encoded messages in the format used by
+ * RemoteContext
+ */
+ function begin_shadow_realm_tests(postMessage) {
+ if (!(test_environment instanceof ShadowRealmTestEnvironment)) {
+ throw new Error("begin_shadow_realm_tests called in non-Shadow Realm environment");
+ }
+
+ test_environment.begin(function (msg) {
+ postMessage(JSON.stringify(msg));
+ });
+ }
+ expose(begin_shadow_realm_tests, 'begin_shadow_realm_tests');
+
+ /**
+ * Timeout the tests.
+ *
+ * This only has an effect when ``explicit_timeout`` has been set
+ * in :js:func:`setup`. In other cases any call is a no-op.
+ *
+ */
+ function timeout() {
+ if (tests.timeout_length === null) {
+ tests.timeout();
+ }
+ }
+ expose(timeout, 'timeout');
+
+ /**
+ * Add a callback that's triggered when the first :js:class:`Test` is created.
+ *
+ * @param {Function} callback - Callback function. This is called
+ * without arguments.
+ */
+ function add_start_callback(callback) {
+ tests.start_callbacks.push(callback);
+ }
+
+ /**
+ * Add a callback that's triggered when a test state changes.
+ *
+ * @param {Function} callback - Callback function, called with the
+ * :js:class:`Test` as the only argument.
+ */
+ function add_test_state_callback(callback) {
+ tests.test_state_callbacks.push(callback);
+ }
+
+ /**
+ * Add a callback that's triggered when a test result is received.
+ *
+ * @param {Function} callback - Callback function, called with the
+ * :js:class:`Test` as the only argument.
+ */
+ function add_result_callback(callback) {
+ tests.test_done_callbacks.push(callback);
+ }
+
+ /**
+ * Add a callback that's triggered when all tests are complete.
+ *
+ * @param {Function} callback - Callback function, called with an
+ * array of :js:class:`Test` objects, a :js:class:`TestsStatus`
+ * object and an array of :js:class:`AssertRecord` objects. If the
+ * debug setting is ``false`` the final argument will be an empty
+ * array.
+ *
+ * For performance reasons asserts are only tracked when the debug
+ * setting is ``true``. In other cases the array of asserts will be
+ * empty.
+ */
+ function add_completion_callback(callback) {
+ tests.all_done_callbacks.push(callback);
+ }
+
+ expose(add_start_callback, 'add_start_callback');
+ expose(add_test_state_callback, 'add_test_state_callback');
+ expose(add_result_callback, 'add_result_callback');
+ expose(add_completion_callback, 'add_completion_callback');
+
+ function remove(array, item) {
+ var index = array.indexOf(item);
+ if (index > -1) {
+ array.splice(index, 1);
+ }
+ }
+
+ function remove_start_callback(callback) {
+ remove(tests.start_callbacks, callback);
+ }
+
+ function remove_test_state_callback(callback) {
+ remove(tests.test_state_callbacks, callback);
+ }
+
+ function remove_result_callback(callback) {
+ remove(tests.test_done_callbacks, callback);
+ }
+
+ function remove_completion_callback(callback) {
+ remove(tests.all_done_callbacks, callback);
+ }
+
+ /*
+ * Output listener
+ */
+
+ function Output() {
+ this.output_document = document;
+ this.output_node = null;
+ this.enabled = settings.output;
+ this.phase = this.INITIAL;
+ }
+
+ Output.prototype.INITIAL = 0;
+ Output.prototype.STARTED = 1;
+ Output.prototype.HAVE_RESULTS = 2;
+ Output.prototype.COMPLETE = 3;
+
+ Output.prototype.setup = function(properties) {
+ if (this.phase > this.INITIAL) {
+ return;
+ }
+
+ //If output is disabled in testharnessreport.js the test shouldn't be
+ //able to override that
+ this.enabled = this.enabled && (properties.hasOwnProperty("output") ?
+ properties.output : settings.output);
+ };
+
+ Output.prototype.init = function(properties) {
+ if (this.phase >= this.STARTED) {
+ return;
+ }
+ if (properties.output_document) {
+ this.output_document = properties.output_document;
+ } else {
+ this.output_document = document;
+ }
+ this.phase = this.STARTED;
+ };
+
+ Output.prototype.resolve_log = function() {
+ var output_document;
+ if (this.output_node) {
+ return;
+ }
+ if (typeof this.output_document === "function") {
+ output_document = this.output_document.apply(undefined);
+ } else {
+ output_document = this.output_document;
+ }
+ if (!output_document) {
+ return;
+ }
+ var node = output_document.getElementById("log");
+ if (!node) {
+ if (output_document.readyState === "loading") {
+ return;
+ }
+ node = output_document.createElementNS("http://www.w3.org/1999/xhtml", "div");
+ node.id = "log";
+ if (output_document.body) {
+ output_document.body.appendChild(node);
+ } else {
+ var root = output_document.documentElement;
+ var is_html = (root &&
+ root.namespaceURI == "http://www.w3.org/1999/xhtml" &&
+ root.localName == "html");
+ var is_svg = (output_document.defaultView &&
+ "SVGSVGElement" in output_document.defaultView &&
+ root instanceof output_document.defaultView.SVGSVGElement);
+ if (is_svg) {
+ var foreignObject = output_document.createElementNS("http://www.w3.org/2000/svg", "foreignObject");
+ foreignObject.setAttribute("width", "100%");
+ foreignObject.setAttribute("height", "100%");
+ root.appendChild(foreignObject);
+ foreignObject.appendChild(node);
+ } else if (is_html) {
+ root.appendChild(output_document.createElementNS("http://www.w3.org/1999/xhtml", "body"))
+ .appendChild(node);
+ } else {
+ root.appendChild(node);
+ }
+ }
+ }
+ this.output_document = output_document;
+ this.output_node = node;
+ };
+
+ Output.prototype.show_status = function() {
+ if (this.phase < this.STARTED) {
+ this.init({});
+ }
+ if (!this.enabled || this.phase === this.COMPLETE) {
+ return;
+ }
+ this.resolve_log();
+ if (this.phase < this.HAVE_RESULTS) {
+ this.phase = this.HAVE_RESULTS;
+ }
+ var done_count = tests.tests.length - tests.num_pending;
+ if (this.output_node && !tests.hide_test_state) {
+ if (done_count < 100 ||
+ (done_count < 1000 && done_count % 100 === 0) ||
+ done_count % 1000 === 0) {
+ this.output_node.textContent = "Running, " +
+ done_count + " complete, " +
+ tests.num_pending + " remain";
+ }
+ }
+ };
+
+ Output.prototype.show_results = function (tests, harness_status, asserts_run) {
+ if (this.phase >= this.COMPLETE) {
+ return;
+ }
+ if (!this.enabled) {
+ return;
+ }
+ if (!this.output_node) {
+ this.resolve_log();
+ }
+ this.phase = this.COMPLETE;
+
+ var log = this.output_node;
+ if (!log) {
+ return;
+ }
+ var output_document = this.output_document;
+
+ while (log.lastChild) {
+ log.removeChild(log.lastChild);
+ }
+
+ var stylesheet = output_document.createElementNS(xhtml_ns, "style");
+ stylesheet.textContent = stylesheetContent;
+ var heads = output_document.getElementsByTagName("head");
+ if (heads.length) {
+ heads[0].appendChild(stylesheet);
+ }
+
+ var status_number = {};
+ forEach(tests,
+ function(test) {
+ var status = test.format_status();
+ if (status_number.hasOwnProperty(status)) {
+ status_number[status] += 1;
+ } else {
+ status_number[status] = 1;
+ }
+ });
+
+ function status_class(status)
+ {
+ return status.replace(/\s/g, '').toLowerCase();
+ }
+
+ var summary_template = ["section", {"id":"summary"},
+ ["h2", {}, "Summary"],
+ function()
+ {
+ var status = harness_status.format_status();
+ var rv = [["section", {},
+ ["p", {},
+ "Harness status: ",
+ ["span", {"class":status_class(status)},
+ status
+ ],
+ ],
+ ["button",
+ {"onclick": "let evt = new Event('__test_restart'); " +
+ "let canceled = !window.dispatchEvent(evt);" +
+ "if (!canceled) { location.reload() }"},
+ "Rerun"]
+ ]];
+
+ if (harness_status.status === harness_status.ERROR) {
+ rv[0].push(["pre", {}, harness_status.message]);
+ if (harness_status.stack) {
+ rv[0].push(["pre", {}, harness_status.stack]);
+ }
+ }
+ return rv;
+ },
+ ["p", {}, "Found ${num_tests} tests"],
+ function() {
+ var rv = [["div", {}]];
+ var i = 0;
+ while (Test.prototype.status_formats.hasOwnProperty(i)) {
+ if (status_number.hasOwnProperty(Test.prototype.status_formats[i])) {
+ var status = Test.prototype.status_formats[i];
+ rv[0].push(["div", {},
+ ["label", {},
+ ["input", {type:"checkbox", checked:"checked"}],
+ status_number[status] + " ",
+ ["span", {"class":status_class(status)}, status]]]);
+ }
+ i++;
+ }
+ return rv;
+ },
+ ];
+
+ log.appendChild(render(summary_template, {num_tests:tests.length}, output_document));
+
+ forEach(output_document.querySelectorAll("section#summary label"),
+ function(element)
+ {
+ on_event(element, "click",
+ function(e)
+ {
+ if (output_document.getElementById("results") === null) {
+ e.preventDefault();
+ return;
+ }
+ var result_class = element.querySelector("span[class]").getAttribute("class");
+ var style_element = output_document.querySelector("style#hide-" + result_class);
+ var input_element = element.querySelector("input");
+ if (!style_element && !input_element.checked) {
+ style_element = output_document.createElementNS(xhtml_ns, "style");
+ style_element.id = "hide-" + result_class;
+ style_element.textContent = "table#results > tbody > tr.overall-"+result_class+"{display:none}";
+ output_document.body.appendChild(style_element);
+ } else if (style_element && input_element.checked) {
+ style_element.parentNode.removeChild(style_element);
+ }
+ });
+ });
+
+ // This use of innerHTML plus manual escaping is not recommended in
+ // general, but is necessary here for performance. Using textContent
+ // on each individual <td> adds tens of seconds of execution time for
+ // large test suites (tens of thousands of tests).
+ function escape_html(s)
+ {
+ return s.replace(/\&/g, "&amp;")
+ .replace(/</g, "&lt;")
+ .replace(/"/g, "&quot;")
+ .replace(/'/g, "&#39;");
+ }
+
+ function has_assertions()
+ {
+ for (var i = 0; i < tests.length; i++) {
+ if (tests[i].properties.hasOwnProperty("assert")) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ function get_assertion(test)
+ {
+ if (test.properties.hasOwnProperty("assert")) {
+ if (Array.isArray(test.properties.assert)) {
+ return test.properties.assert.join(' ');
+ }
+ return test.properties.assert;
+ }
+ return '';
+ }
+
+ var asserts_run_by_test = new Map();
+ asserts_run.forEach(assert => {
+ if (!asserts_run_by_test.has(assert.test)) {
+ asserts_run_by_test.set(assert.test, []);
+ }
+ asserts_run_by_test.get(assert.test).push(assert);
+ });
+
+ function get_asserts_output(test) {
+ var asserts = asserts_run_by_test.get(test);
+ if (!asserts) {
+ return "No asserts ran";
+ }
+ rv = "<table>";
+ rv += asserts.map(assert => {
+ var output_fn = "<strong>" + escape_html(assert.assert_name) + "</strong>(";
+ var prefix_len = output_fn.length;
+ var output_args = assert.args;
+ var output_len = output_args.reduce((prev, current) => prev+current, prefix_len);
+ if (output_len[output_len.length - 1] > 50) {
+ output_args = output_args.map((x, i) =>
+ (i > 0 ? " ".repeat(prefix_len) : "" )+ x + (i < output_args.length - 1 ? ",\n" : ""));
+ } else {
+ output_args = output_args.map((x, i) => x + (i < output_args.length - 1 ? ", " : ""));
+ }
+ output_fn += escape_html(output_args.join(""));
+ output_fn += ')';
+ var output_location;
+ if (assert.stack) {
+ output_location = assert.stack.split("\n", 1)[0].replace(/@?\w+:\/\/[^ "\/]+(?::\d+)?/g, " ");
+ }
+ return "<tr class='overall-" +
+ status_class(Test.prototype.status_formats[assert.status]) + "'>" +
+ "<td class='" +
+ status_class(Test.prototype.status_formats[assert.status]) + "'>" +
+ Test.prototype.status_formats[assert.status] + "</td>" +
+ "<td><pre>" +
+ output_fn +
+ (output_location ? "\n" + escape_html(output_location) : "") +
+ "</pre></td></tr>";
+ }
+ ).join("\n");
+ rv += "</table>";
+ return rv;
+ }
+
+ log.appendChild(document.createElementNS(xhtml_ns, "section"));
+ var assertions = has_assertions();
+ var html = "<h2>Details</h2><table id='results' " + (assertions ? "class='assertions'" : "" ) + ">" +
+ "<thead><tr><th>Result</th><th>Test Name</th>" +
+ (assertions ? "<th>Assertion</th>" : "") +
+ "<th>Message</th></tr></thead>" +
+ "<tbody>";
+ for (var i = 0; i < tests.length; i++) {
+ var test = tests[i];
+ html += '<tr class="overall-' +
+ status_class(test.format_status()) +
+ '">' +
+ '<td class="' +
+ status_class(test.format_status()) +
+ '">' +
+ test.format_status() +
+ "</td><td>" +
+ escape_html(test.name) +
+ "</td><td>" +
+ (assertions ? escape_html(get_assertion(test)) + "</td><td>" : "") +
+ escape_html(test.message ? tests[i].message : " ") +
+ (tests[i].stack ? "<pre>" +
+ escape_html(tests[i].stack) +
+ "</pre>": "");
+ if (!(test instanceof RemoteTest)) {
+ html += "<details><summary>Asserts run</summary>" + get_asserts_output(test) + "</details>"
+ }
+ html += "</td></tr>";
+ }
+ html += "</tbody></table>";
+ try {
+ log.lastChild.innerHTML = html;
+ } catch (e) {
+ log.appendChild(document.createElementNS(xhtml_ns, "p"))
+ .textContent = "Setting innerHTML for the log threw an exception.";
+ log.appendChild(document.createElementNS(xhtml_ns, "pre"))
+ .textContent = html;
+ }
+ };
+
+ /*
+ * Template code
+ *
+ * A template is just a JavaScript structure. An element is represented as:
+ *
+ * [tag_name, {attr_name:attr_value}, child1, child2]
+ *
+ * the children can either be strings (which act like text nodes), other templates or
+ * functions (see below)
+ *
+ * A text node is represented as
+ *
+ * ["{text}", value]
+ *
+ * String values have a simple substitution syntax; ${foo} represents a variable foo.
+ *
+ * It is possible to embed logic in templates by using a function in a place where a
+ * node would usually go. The function must either return part of a template or null.
+ *
+ * In cases where a set of nodes are required as output rather than a single node
+ * with children it is possible to just use a list
+ * [node1, node2, node3]
+ *
+ * Usage:
+ *
+ * render(template, substitutions) - take a template and an object mapping
+ * variable names to parameters and return either a DOM node or a list of DOM nodes
+ *
+ * substitute(template, substitutions) - take a template and variable mapping object,
+ * make the variable substitutions and return the substituted template
+ *
+ */
+
+ function is_single_node(template)
+ {
+ return typeof template[0] === "string";
+ }
+
+ function substitute(template, substitutions)
+ {
+ if (typeof template === "function") {
+ var replacement = template(substitutions);
+ if (!replacement) {
+ return null;
+ }
+
+ return substitute(replacement, substitutions);
+ }
+
+ if (is_single_node(template)) {
+ return substitute_single(template, substitutions);
+ }
+
+ return filter(map(template, function(x) {
+ return substitute(x, substitutions);
+ }), function(x) {return x !== null;});
+ }
+
+ function substitute_single(template, substitutions)
+ {
+ var substitution_re = /\$\{([^ }]*)\}/g;
+
+ function do_substitution(input) {
+ var components = input.split(substitution_re);
+ var rv = [];
+ for (var i = 0; i < components.length; i += 2) {
+ rv.push(components[i]);
+ if (components[i + 1]) {
+ rv.push(String(substitutions[components[i + 1]]));
+ }
+ }
+ return rv;
+ }
+
+ function substitute_attrs(attrs, rv)
+ {
+ rv[1] = {};
+ for (var name in template[1]) {
+ if (attrs.hasOwnProperty(name)) {
+ var new_name = do_substitution(name).join("");
+ var new_value = do_substitution(attrs[name]).join("");
+ rv[1][new_name] = new_value;
+ }
+ }
+ }
+
+ function substitute_children(children, rv)
+ {
+ for (var i = 0; i < children.length; i++) {
+ if (children[i] instanceof Object) {
+ var replacement = substitute(children[i], substitutions);
+ if (replacement !== null) {
+ if (is_single_node(replacement)) {
+ rv.push(replacement);
+ } else {
+ extend(rv, replacement);
+ }
+ }
+ } else {
+ extend(rv, do_substitution(String(children[i])));
+ }
+ }
+ return rv;
+ }
+
+ var rv = [];
+ rv.push(do_substitution(String(template[0])).join(""));
+
+ if (template[0] === "{text}") {
+ substitute_children(template.slice(1), rv);
+ } else {
+ substitute_attrs(template[1], rv);
+ substitute_children(template.slice(2), rv);
+ }
+
+ return rv;
+ }
+
+ function make_dom_single(template, doc)
+ {
+ var output_document = doc || document;
+ var element;
+ if (template[0] === "{text}") {
+ element = output_document.createTextNode("");
+ for (var i = 1; i < template.length; i++) {
+ element.data += template[i];
+ }
+ } else {
+ element = output_document.createElementNS(xhtml_ns, template[0]);
+ for (var name in template[1]) {
+ if (template[1].hasOwnProperty(name)) {
+ element.setAttribute(name, template[1][name]);
+ }
+ }
+ for (var i = 2; i < template.length; i++) {
+ if (template[i] instanceof Object) {
+ var sub_element = make_dom(template[i]);
+ element.appendChild(sub_element);
+ } else {
+ var text_node = output_document.createTextNode(template[i]);
+ element.appendChild(text_node);
+ }
+ }
+ }
+
+ return element;
+ }
+
+ function make_dom(template, substitutions, output_document)
+ {
+ if (is_single_node(template)) {
+ return make_dom_single(template, output_document);
+ }
+
+ return map(template, function(x) {
+ return make_dom_single(x, output_document);
+ });
+ }
+
+ function render(template, substitutions, output_document)
+ {
+ return make_dom(substitute(template, substitutions), output_document);
+ }
+
+ /*
+ * Utility functions
+ */
+ function assert(expected_true, function_name, description, error, substitutions)
+ {
+ if (expected_true !== true) {
+ var msg = make_message(function_name, description,
+ error, substitutions);
+ throw new AssertionError(msg);
+ }
+ }
+
+ /**
+ * @class
+ * Exception type that represents a failing assert.
+ *
+ * @param {string} message - Error message.
+ */
+ function AssertionError(message)
+ {
+ if (typeof message == "string") {
+ message = sanitize_unpaired_surrogates(message);
+ }
+ this.message = message;
+ this.stack = get_stack();
+ }
+ expose(AssertionError, "AssertionError");
+
+ AssertionError.prototype = Object.create(Error.prototype);
+
+ const get_stack = function() {
+ var stack = new Error().stack;
+
+ // 'Error.stack' is not supported in all browsers/versions
+ if (!stack) {
+ return "(Stack trace unavailable)";
+ }
+
+ var lines = stack.split("\n");
+
+ // Create a pattern to match stack frames originating within testharness.js. These include the
+ // script URL, followed by the line/col (e.g., '/resources/testharness.js:120:21').
+ // Escape the URL per http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
+ // in case it contains RegExp characters.
+ var script_url = get_script_url();
+ var re_text = script_url ? script_url.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&') : "\\btestharness.js";
+ var re = new RegExp(re_text + ":\\d+:\\d+");
+
+ // Some browsers include a preamble that specifies the type of the error object. Skip this by
+ // advancing until we find the first stack frame originating from testharness.js.
+ var i = 0;
+ while (!re.test(lines[i]) && i < lines.length) {
+ i++;
+ }
+
+ // Then skip the top frames originating from testharness.js to begin the stack at the test code.
+ while (re.test(lines[i]) && i < lines.length) {
+ i++;
+ }
+
+ // Paranoid check that we didn't skip all frames. If so, return the original stack unmodified.
+ if (i >= lines.length) {
+ return stack;
+ }
+
+ return lines.slice(i).join("\n");
+ }
+
+ function OptionalFeatureUnsupportedError(message)
+ {
+ AssertionError.call(this, message);
+ }
+ OptionalFeatureUnsupportedError.prototype = Object.create(AssertionError.prototype);
+ expose(OptionalFeatureUnsupportedError, "OptionalFeatureUnsupportedError");
+
+ function make_message(function_name, description, error, substitutions)
+ {
+ for (var p in substitutions) {
+ if (substitutions.hasOwnProperty(p)) {
+ substitutions[p] = format_value(substitutions[p]);
+ }
+ }
+ var node_form = substitute(["{text}", "${function_name}: ${description}" + error],
+ merge({function_name:function_name,
+ description:(description?description + " ":"")},
+ substitutions));
+ return node_form.slice(1).join("");
+ }
+
+ function filter(array, callable, thisObj) {
+ var rv = [];
+ for (var i = 0; i < array.length; i++) {
+ if (array.hasOwnProperty(i)) {
+ var pass = callable.call(thisObj, array[i], i, array);
+ if (pass) {
+ rv.push(array[i]);
+ }
+ }
+ }
+ return rv;
+ }
+
+ function map(array, callable, thisObj)
+ {
+ var rv = [];
+ rv.length = array.length;
+ for (var i = 0; i < array.length; i++) {
+ if (array.hasOwnProperty(i)) {
+ rv[i] = callable.call(thisObj, array[i], i, array);
+ }
+ }
+ return rv;
+ }
+
+ function extend(array, items)
+ {
+ Array.prototype.push.apply(array, items);
+ }
+
+ function forEach(array, callback, thisObj)
+ {
+ for (var i = 0; i < array.length; i++) {
+ if (array.hasOwnProperty(i)) {
+ callback.call(thisObj, array[i], i, array);
+ }
+ }
+ }
+
+ /**
+ * Immediately invoke a "iteratee" function with a series of values in
+ * parallel and invoke a final "done" function when all of the "iteratee"
+ * invocations have signaled completion.
+ *
+ * If all callbacks complete synchronously (or if no callbacks are
+ * specified), the ``done_callback`` will be invoked synchronously. It is the
+ * responsibility of the caller to ensure asynchronicity in cases where
+ * that is desired.
+ *
+ * @param {array} value Zero or more values to use in the invocation of
+ * ``iter_callback``
+ * @param {function} iter_callback A function that will be invoked
+ * once for each of the values min
+ * ``value``. Two arguments will
+ * be available in each
+ * invocation: the value from
+ * ``value`` and a function that
+ * must be invoked to signal
+ * completion
+ * @param {function} done_callback A function that will be invoked after
+ * all operations initiated by the
+ * ``iter_callback`` function have signaled
+ * completion
+ */
+ function all_async(values, iter_callback, done_callback)
+ {
+ var remaining = values.length;
+
+ if (remaining === 0) {
+ done_callback();
+ }
+
+ forEach(values,
+ function(element) {
+ var invoked = false;
+ var elDone = function() {
+ if (invoked) {
+ return;
+ }
+
+ invoked = true;
+ remaining -= 1;
+
+ if (remaining === 0) {
+ done_callback();
+ }
+ };
+
+ iter_callback(element, elDone);
+ });
+ }
+
+ function merge(a,b)
+ {
+ var rv = {};
+ var p;
+ for (p in a) {
+ rv[p] = a[p];
+ }
+ for (p in b) {
+ rv[p] = b[p];
+ }
+ return rv;
+ }
+
+ function expose(object, name)
+ {
+ var components = name.split(".");
+ var target = global_scope;
+ for (var i = 0; i < components.length - 1; i++) {
+ if (!(components[i] in target)) {
+ target[components[i]] = {};
+ }
+ target = target[components[i]];
+ }
+ target[components[components.length - 1]] = object;
+ }
+
+ function is_same_origin(w) {
+ try {
+ 'random_prop' in w;
+ return true;
+ } catch (e) {
+ return false;
+ }
+ }
+
+ /** Returns the 'src' URL of the first <script> tag in the page to include the file 'testharness.js'. */
+ function get_script_url()
+ {
+ if (!('document' in global_scope)) {
+ return undefined;
+ }
+
+ var scripts = document.getElementsByTagName("script");
+ for (var i = 0; i < scripts.length; i++) {
+ var src;
+ if (scripts[i].src) {
+ src = scripts[i].src;
+ } else if (scripts[i].href) {
+ //SVG case
+ src = scripts[i].href.baseVal;
+ }
+
+ var matches = src && src.match(/^(.*\/|)testharness\.js$/);
+ if (matches) {
+ return src;
+ }
+ }
+ return undefined;
+ }
+
+ /** Returns the <title> or filename or "Untitled" */
+ function get_title()
+ {
+ if ('document' in global_scope) {
+ //Don't use document.title to work around an Opera/Presto bug in XHTML documents
+ var title = document.getElementsByTagName("title")[0];
+ if (title && title.firstChild && title.firstChild.data) {
+ return title.firstChild.data;
+ }
+ }
+ if ('META_TITLE' in global_scope && META_TITLE) {
+ return META_TITLE;
+ }
+ if ('location' in global_scope && 'pathname' in location) {
+ return location.pathname.substring(location.pathname.lastIndexOf('/') + 1, location.pathname.indexOf('.'));
+ }
+ return "Untitled";
+ }
+
+ /**
+ * Setup globals
+ */
+
+ var tests = new Tests();
+
+ if (global_scope.addEventListener) {
+ var error_handler = function(error, message, stack) {
+ var optional_unsupported = error instanceof OptionalFeatureUnsupportedError;
+ if (tests.file_is_test) {
+ var test = tests.tests[0];
+ if (test.phase >= test.phases.HAS_RESULT) {
+ return;
+ }
+ var status = optional_unsupported ? test.PRECONDITION_FAILED : test.FAIL;
+ test.set_status(status, message, stack);
+ test.phase = test.phases.HAS_RESULT;
+ } else if (!tests.allow_uncaught_exception) {
+ var status = optional_unsupported ? tests.status.PRECONDITION_FAILED : tests.status.ERROR;
+ tests.status.status = status;
+ tests.status.message = message;
+ tests.status.stack = stack;
+ }
+
+ // Do not transition to the "complete" phase if the test has been
+ // configured to allow uncaught exceptions. This gives the test an
+ // opportunity to define subtests based on the exception reporting
+ // behavior.
+ if (!tests.allow_uncaught_exception) {
+ done();
+ }
+ };
+
+ addEventListener("error", function(e) {
+ var message = e.message;
+ var stack;
+ if (e.error && e.error.stack) {
+ stack = e.error.stack;
+ } else {
+ stack = e.filename + ":" + e.lineno + ":" + e.colno;
+ }
+ error_handler(e.error, message, stack);
+ }, false);
+
+ addEventListener("unhandledrejection", function(e) {
+ var message;
+ if (e.reason && e.reason.message) {
+ message = "Unhandled rejection: " + e.reason.message;
+ } else {
+ message = "Unhandled rejection";
+ }
+ var stack;
+ if (e.reason && e.reason.stack) {
+ stack = e.reason.stack;
+ }
+ error_handler(e.reason, message, stack);
+ }, false);
+ }
+
+ test_environment.on_tests_ready();
+
+ /**
+ * Stylesheet
+ */
+ var stylesheetContent = "\
+html {\
+ font-family:DejaVu Sans, Bitstream Vera Sans, Arial, Sans;\
+}\
+\
+#log .warning,\
+#log .warning a {\
+ color: black;\
+ background: yellow;\
+}\
+\
+#log .error,\
+#log .error a {\
+ color: white;\
+ background: red;\
+}\
+\
+section#summary {\
+ margin-bottom:1em;\
+}\
+\
+table#results {\
+ border-collapse:collapse;\
+ table-layout:fixed;\
+ width:100%;\
+}\
+\
+table#results > thead > tr > th:first-child,\
+table#results > tbody > tr > td:first-child {\
+ width:8em;\
+}\
+\
+table#results > thead > tr > th:last-child,\
+table#results > thead > tr > td:last-child {\
+ width:50%;\
+}\
+\
+table#results.assertions > thead > tr > th:last-child,\
+table#results.assertions > tbody > tr > td:last-child {\
+ width:35%;\
+}\
+\
+table#results > thead > > tr > th {\
+ padding:0;\
+ padding-bottom:0.5em;\
+ border-bottom:medium solid black;\
+}\
+\
+table#results > tbody > tr> td {\
+ padding:1em;\
+ padding-bottom:0.5em;\
+ border-bottom:thin solid black;\
+}\
+\
+.pass {\
+ color:green;\
+}\
+\
+.fail {\
+ color:red;\
+}\
+\
+tr.timeout {\
+ color:red;\
+}\
+\
+tr.notrun {\
+ color:blue;\
+}\
+\
+tr.optionalunsupported {\
+ color:blue;\
+}\
+\
+.ok {\
+ color:green;\
+}\
+\
+.error {\
+ color:red;\
+}\
+\
+.pass, .fail, .timeout, .notrun, .optionalunsupported .ok, .timeout, .error {\
+ font-variant:small-caps;\
+}\
+\
+table#results span {\
+ display:block;\
+}\
+\
+table#results span.expected {\
+ font-family:DejaVu Sans Mono, Bitstream Vera Sans Mono, Monospace;\
+ white-space:pre;\
+}\
+\
+table#results span.actual {\
+ font-family:DejaVu Sans Mono, Bitstream Vera Sans Mono, Monospace;\
+ white-space:pre;\
+}\
+";
+
+})(self);
+// vim: set expandtab shiftwidth=4 tabstop=4: