/*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() {
setTimeout(() => {
this_obj.all_loaded = true;
if (tests.all_done()) {
tests.complete();
}
},0);
});
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 passed to no-constructor version of promise_rejects_dom, or accidentally explicitly passed undefined");
}
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);
}
// Internal helper function to provide timeout-like functionality in
// environments where there is no setTimeout(). (No timeout ID or
// clearTimeout().)
function fake_set_timeout(callback, delay) {
var p = Promise.resolve();
var start = Date.now();
var end = start + delay;
function check() {
if ((end - Date.now()) > 0) {
p.then(check);
} else {
callback();
}
}
p.then(check);
}
/**
* 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);
var local_set_timeout = typeof global_scope.setTimeout === "undefined" ? fake_set_timeout : setTimeout;
return local_set_timeout(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 object 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 passed to no-constructor version of assert_throws_dom, or accidentally explicitly passed undefined");
}
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);
var local_set_timeout = typeof global_scope.setTimeout === "undefined" ? fake_set_timeout : setTimeout;
return local_set_timeout(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 or a Promise. The callback is
* called when this function returns true, or the
* returned Promise is resolved with 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 local_set_timeout = typeof global_scope.setTimeout === 'undefined' ? fake_set_timeout : setTimeout;
const step = test_this.step_func((result) => {
if (result) {
func();
} else {
if (remaining === 0) {
assert(false, "step_wait_func", description,
"Timed out waiting on condition");
}
remaining--;
local_set_timeout(wait_for_inner, interval);
}
});
var wait_for_inner = test_this.step_func(() => {
Promise.resolve(cond()).then(
step,
test_this.unreached_func("step_wait_func"));
});
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 or a Promise. The callback is
* called when this function returns true, or the
* returned Promise is resolved with 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 or a Promise.
* @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", {"id":"rerun"}, "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));
output_document.getElementById("rerun").addEventListener("click",
function() {
let evt = new Event('__test_restart');
let canceled = !window.dispatchEvent(evt);
if (!canceled) { location.reload(); }
});
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);
}
});
});
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) {
const asserts_output = render(
["details", {},
["summary", {}, "Asserts run"],
["table", {}, ""] ]);
var asserts = asserts_run_by_test.get(test);
if (!asserts) {
asserts_output.querySelector("summary").insertAdjacentText("afterend", "No asserts ran");
return asserts_output;
}
const table = asserts_output.querySelector("table");
for (const assert of asserts) {
const status_class_name = status_class(Test.prototype.status_formats[assert.status]);
var output_fn = "(" + assert.args.join(", ") + ")";
if (assert.stack) {
output_fn += "\n";
output_fn += assert.stack.split("\n", 1)[0].replace(/@?\w+:\/\/[^ "\/]+(?::\d+)?/g, " ");
}
table.appendChild(render(
["tr", {"class":"overall-" + status_class_name},
["td", {"class":status_class_name}, Test.prototype.status_formats[assert.status]],
["td", {}, ["pre", {}, ["strong", {}, assert.assert_name], output_fn]] ]));
}
return asserts_output;
}
var assertions = has_assertions();
const section = render(
["section", {},
["h2", {}, "Details"],
["table", {"id":"results", "class":(assertions ? "assertions" : "")},
["thead", {},
["tr", {},
["th", {}, "Result"],
["th", {}, "Test Name"],
(assertions ? ["th", {}, "Assertion"] : ""),
["th", {}, "Message" ]]],
["tbody", {}]]]);
const tbody = section.querySelector("tbody");
for (const test of tests) {
const status = test.format_status();
const status_class_name = status_class(status);
tbody.appendChild(render(
["tr", {"class":"overall-" + status_class_name},
["td", {"class":status_class_name}, status],
["td", {}, test.name],
(assertions ? ["td", {}, get_assertion(test)] : ""),
["td", {},
test.message ?? "",
["pre", {}, test.stack ?? ""]]]));
if (!(test instanceof RemoteTest)) {
tbody.lastChild.lastChild.appendChild(get_asserts_output(test));
}
}
log.appendChild(section);
};
/*
* 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 = [];
if (components.length === 1) {
rv = components;
} else if (substitutions) {
for (var i = 0; i < components.length; i += 2) {
if (components[i]) {
rv.push(components[i]);
}
if (substitutions[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";
}
/** Fetches a JSON resource and parses it */
async function fetch_json(resource) {
const response = await fetch(resource);
return await response.json();
}
if (!global_scope.GLOBAL || !global_scope.GLOBAL.isShadowRealm()) {
expose(fetch_json, 'fetch_json');
}
/**
* 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:
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