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Diffstat (limited to 'testing/web-platform/tests/resources/testharness.js')
| -rw-r--r-- | testing/web-platform/tests/resources/testharness.js | 4933 |
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, "&") + .replace(/</g, "<") + .replace(/"/g, """) + .replace(/'/g, "'"); + } + + 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: |