зеркало из https://github.com/mozilla/gecko-dev.git
845 строки
22 KiB
HTML
845 строки
22 KiB
HTML
<!--
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Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/
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-->
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<html>
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<head>
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<title>Basic Promise Test</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<p id="display"></p>
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<div id="content" style="display: none">
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</div>
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<pre id="test">
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<script type="application/javascript"><!--
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function promiseResolve() {
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ok(Promise, "Promise object should exist");
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var promise = new Promise(function(resolve, reject) {
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ok(resolve, "Promise.resolve exists");
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ok(reject, "Promise.reject exists");
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resolve(42);
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});
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promise.then(function(what) {
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ok(true, "Then - resolveCb has been called");
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is(what, 42, "ResolveCb received 42");
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runTest();
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}, function() {
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ok(false, "Then - rejectCb has been called");
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runTest();
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});
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}
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function promiseResolveNoArg() {
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var promise = new Promise(function(resolve, reject) {
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ok(resolve, "Promise.resolve exists");
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ok(reject, "Promise.reject exists");
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resolve();
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});
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promise.then(function(what) {
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ok(true, "Then - resolveCb has been called");
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is(what, undefined, "ResolveCb received undefined");
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runTest();
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}, function() {
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ok(false, "Then - rejectCb has been called");
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runTest();
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});
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}
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function promiseReject() {
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var promise = new Promise(function(resolve, reject) {
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reject(42);
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});
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promise.then(function(what) {
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ok(false, "Then - resolveCb has been called");
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runTest();
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}, function(what) {
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ok(true, "Then - rejectCb has been called");
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is(what, 42, "RejectCb received 42");
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runTest();
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});
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}
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function promiseRejectNoHandler() {
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// This test only checks that the code that reports unhandled errors in the
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// Promises implementation does not crash or leak.
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new Promise(function(res, rej) {
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// eslint-disable-next-line no-undef
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noSuchMethod();
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});
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runTest();
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}
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function promiseRejectNoArg() {
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var promise = new Promise(function(resolve, reject) {
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reject();
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});
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promise.then(function(what) {
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ok(false, "Then - resolveCb has been called");
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runTest();
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}, function(what) {
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ok(true, "Then - rejectCb has been called");
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is(what, undefined, "RejectCb received undefined");
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runTest();
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});
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}
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function promiseException() {
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var promise = new Promise(function(resolve, reject) {
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// eslint-disable-next-line no-throw-literal
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throw 42;
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});
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promise.then(function(what) {
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ok(false, "Then - resolveCb has been called");
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runTest();
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}, function(what) {
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ok(true, "Then - rejectCb has been called");
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is(what, 42, "RejectCb received 42");
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runTest();
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});
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}
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function promiseGC() {
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var resolve;
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var promise = new Promise(function(r1, r2) {
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resolve = r1;
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});
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promise.then(function(what) {
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ok(true, "Then - promise is still alive");
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runTest();
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});
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promise = null;
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SpecialPowers.gc();
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SpecialPowers.forceGC();
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SpecialPowers.forceCC();
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resolve(42);
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}
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function promiseAsync_TimeoutResolveThen() {
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var handlerExecuted = false;
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setTimeout(function() {
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ok(handlerExecuted, "Handler should have been called before the timeout.");
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// Allow other assertions to run so the test could fail before the next one.
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setTimeout(runTest, 0);
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}, 0);
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Promise.resolve().then(function() {
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handlerExecuted = true;
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});
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ok(!handlerExecuted, "Handlers are not called before 'then' returns.");
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}
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function promiseAsync_ResolveTimeoutThen() {
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var handlerExecuted = false;
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var promise = Promise.resolve();
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setTimeout(function() {
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ok(handlerExecuted, "Handler should have been called before the timeout.");
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// Allow other assertions to run so the test could fail before the next one.
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setTimeout(runTest, 0);
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}, 0);
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promise.then(function() {
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handlerExecuted = true;
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});
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ok(!handlerExecuted, "Handlers are not called before 'then' returns.");
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}
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function promiseAsync_ResolveThenTimeout() {
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var handlerExecuted = false;
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Promise.resolve().then(function() {
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handlerExecuted = true;
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});
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setTimeout(function() {
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ok(handlerExecuted, "Handler should have been called before the timeout.");
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// Allow other assertions to run so the test could fail before the next one.
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setTimeout(runTest, 0);
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}, 0);
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ok(!handlerExecuted, "Handlers are not called before 'then' returns.");
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}
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function promiseAsync_SyncXHR() {
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var handlerExecuted = false;
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Promise.resolve().then(function() {
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handlerExecuted = true;
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// Allow other assertions to run so the test could fail before the next one.
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setTimeout(runTest, 0);
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});
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ok(!handlerExecuted, "Handlers are not called until the next microtask.");
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var xhr = new XMLHttpRequest();
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xhr.open("GET", "testXHR.txt", false);
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xhr.send(null);
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ok(!handlerExecuted, "Sync XHR should not trigger microtask execution.");
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}
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function promiseDoubleThen() {
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var steps = 0;
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var promise = new Promise(function(r1, r2) {
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r1(42);
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});
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promise.then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 42, "Value == 42");
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steps++;
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}, function(what) {
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ok(false, "Then.reject has been called");
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});
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promise.then(function(what) {
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ok(true, "Then.resolve has been called");
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is(steps, 1, "Then.resolve - step == 1");
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is(what, 42, "Value == 42");
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runTest();
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}, function(what) {
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ok(false, "Then.reject has been called");
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});
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}
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function promiseThenException() {
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var promise = new Promise(function(resolve, reject) {
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resolve(42);
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});
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promise.then(function(what) {
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ok(true, "Then.resolve has been called");
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// eslint-disable-next-line no-throw-literal
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throw "booh";
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}).catch(function(e) {
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ok(true, "window.onerror has been called!");
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runTest();
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});
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}
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function promiseThenCatchThen() {
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var promise = new Promise(function(resolve, reject) {
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resolve(42);
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});
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var promise2 = promise.then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 42, "Value == 42");
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return what + 1;
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}, function(what) {
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ok(false, "Then.reject has been called");
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});
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isnot(promise, promise2, "These 2 promise objs are different");
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promise2.then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 43, "Value == 43");
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return what + 1;
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}, function(what) {
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ok(false, "Then.reject has been called");
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}).catch(function() {
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ok(false, "Catch has been called");
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}).then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 44, "Value == 44");
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runTest();
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}, function(what) {
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ok(false, "Then.reject has been called");
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});
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}
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function promiseThenNoArg() {
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var promise = new Promise(function(resolve, reject) {
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resolve(42);
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});
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var clone = promise.then();
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isnot(promise, clone, "These 2 promise objs are different");
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promise.then(function(v) {
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clone.then(function(cv) {
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is(v, cv, "Both resolve to the same value");
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runTest();
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});
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});
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}
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function promiseThenUndefinedResolveFunction() {
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var promise = new Promise(function(resolve, reject) {
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reject(42);
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});
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try {
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promise.then(undefined, function(v) {
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is(v, 42, "Promise rejected with 42");
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runTest();
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});
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} catch (e) {
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ok(false, "then should not throw on undefined resolve function");
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}
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}
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function promiseThenNullResolveFunction() {
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var promise = new Promise(function(resolve, reject) {
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reject(42);
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});
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try {
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promise.then(null, function(v) {
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is(v, 42, "Promise rejected with 42");
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runTest();
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});
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} catch (e) {
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ok(false, "then should not throw on null resolve function");
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}
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}
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function promiseRejectThenCatchThen() {
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var promise = new Promise(function(resolve, reject) {
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reject(42);
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});
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var promise2 = promise.then(function(what) {
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ok(false, "Then.resolve has been called");
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}, function(what) {
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ok(true, "Then.reject has been called");
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is(what, 42, "Value == 42");
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return what + 1;
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});
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isnot(promise, promise2, "These 2 promise objs are different");
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promise2.then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 43, "Value == 43");
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return what + 1;
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}).catch(function(what) {
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ok(false, "Catch has been called");
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}).then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 44, "Value == 44");
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runTest();
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});
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}
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function promiseRejectThenCatchThen2() {
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var promise = new Promise(function(resolve, reject) {
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reject(42);
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});
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promise.then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 42, "Value == 42");
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return what + 1;
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}).catch(function(what) {
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is(what, 42, "Value == 42");
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ok(true, "Catch has been called");
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return what + 1;
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}).then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 43, "Value == 43");
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runTest();
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});
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}
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function promiseRejectThenCatchExceptionThen() {
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var promise = new Promise(function(resolve, reject) {
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reject(42);
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});
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promise.then(function(what) {
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ok(false, "Then.resolve has been called");
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}, function(what) {
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ok(true, "Then.reject has been called");
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is(what, 42, "Value == 42");
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// eslint-disable-next-line no-throw-literal
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throw (what + 1);
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}).catch(function(what) {
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ok(true, "Catch has been called");
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is(what, 43, "Value == 43");
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return what + 1;
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}).then(function(what) {
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ok(true, "Then.resolve has been called");
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is(what, 44, "Value == 44");
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runTest();
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});
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}
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function promiseThenCatchOrderingResolve() {
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var global = 0;
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var f = new Promise(function(r1, r2) {
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r1(42);
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});
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f.then(function() {
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f.then(function() {
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global++;
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});
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f.catch(function() {
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global++;
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});
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f.then(function() {
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global++;
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});
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setTimeout(function() {
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is(global, 2, "Many steps... should return 2");
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runTest();
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}, 0);
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});
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}
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function promiseThenCatchOrderingReject() {
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var global = 0;
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var f = new Promise(function(r1, r2) {
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r2(42);
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});
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f.then(function() {}, function() {
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f.then(function() {
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global++;
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});
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f.catch(function() {
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global++;
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});
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f.then(function() {}, function() {
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global++;
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});
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setTimeout(function() {
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is(global, 2, "Many steps... should return 2");
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runTest();
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}, 0);
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});
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}
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function promiseCatchNoArg() {
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var promise = new Promise(function(resolve, reject) {
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reject(42);
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});
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var clone = promise.catch();
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isnot(promise, clone, "These 2 promise objs are different");
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promise.catch(function(v) {
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clone.catch(function(cv) {
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is(v, cv, "Both reject to the same value");
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runTest();
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});
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});
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}
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function promiseNestedPromise() {
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new Promise(function(resolve, reject) {
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resolve(new Promise(function(res, rej) {
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ok(true, "Nested promise is executed");
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res(42);
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}));
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}).then(function(value) {
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is(value, 42, "Nested promise is executed and then == 42");
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runTest();
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});
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}
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function promiseNestedNestedPromise() {
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new Promise(function(resolve, reject) {
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resolve(new Promise(function(res, rej) {
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ok(true, "Nested promise is executed");
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res(42);
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}).then(function(what) { return what + 1; }));
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}).then(function(value) {
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is(value, 43, "Nested promise is executed and then == 43");
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runTest();
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});
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}
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function promiseWrongNestedPromise() {
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new Promise(function(resolve, reject) {
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resolve(new Promise(function(r, r2) {
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ok(true, "Nested promise is executed");
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r(42);
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}));
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reject(42);
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}).then(function(value) {
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is(value, 42, "Nested promise is executed and then == 42");
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runTest();
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}, function(value) {
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ok(false, "This is wrong");
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});
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}
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function promiseLoop() {
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new Promise(function(resolve, reject) {
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resolve(new Promise(function(res, rej) {
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ok(true, "Nested promise is executed");
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res(new Promise(function(resInner, rejInner) {
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ok(true, "Nested nested promise is executed");
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resInner(42);
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}));
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}));
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}).then(function(value) {
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is(value, 42, "Nested nested promise is executed and then == 42");
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runTest();
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}, function(value) {
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ok(false, "This is wrong");
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});
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}
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function promiseStaticReject() {
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var promise = Promise.reject(42);
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promise.then(function(what) {
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ok(false, "This should not be called");
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}, function(what) {
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is(what, 42, "Value == 42");
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runTest();
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});
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}
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function promiseStaticResolve() {
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var promise = Promise.resolve(42);
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promise.then(function(what) {
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is(what, 42, "Value == 42");
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runTest();
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}, function() {
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ok(false, "This should not be called");
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});
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}
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function promiseResolveNestedPromise() {
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var promise = Promise.resolve(new Promise(function(r, r2) {
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ok(true, "Nested promise is executed");
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r(42);
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}, function() {
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ok(false, "This should not be called");
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}));
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promise.then(function(what) {
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is(what, 42, "Value == 42");
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runTest();
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}, function() {
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ok(false, "This should not be called");
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});
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}
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function promiseSimpleThenableResolve() {
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var thenable = { then(resolve) { resolve(5); } };
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var promise = new Promise(function(resolve, reject) {
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resolve(thenable);
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});
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promise.then(function(v) {
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ok(v === 5, "promiseSimpleThenableResolve");
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runTest();
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}, function(e) {
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ok(false, "promiseSimpleThenableResolve: Should not reject");
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});
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}
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function promiseSimpleThenableReject() {
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var thenable = { then(resolve, reject) { reject(5); } };
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var promise = new Promise(function(resolve, reject) {
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resolve(thenable);
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});
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promise.then(function() {
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ok(false, "promiseSimpleThenableReject: Should not resolve");
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runTest();
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}, function(e) {
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ok(e === 5, "promiseSimpleThenableReject");
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runTest();
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});
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}
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function promiseThenableThrowsBeforeCallback() {
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var thenable = { then(resolve) {
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throw new TypeError("Hi there");
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// eslint-disable-next-line no-unreachable
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resolve(5);
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}};
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var promise = Promise.resolve(thenable);
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promise.then(function(v) {
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ok(false, "promiseThenableThrowsBeforeCallback: Should've rejected");
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runTest();
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}, function(e) {
|
|
ok(e instanceof TypeError, "promiseThenableThrowsBeforeCallback");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseThenableThrowsAfterCallback() {
|
|
var thenable = { then(resolve) {
|
|
resolve(5);
|
|
throw new TypeError("Hi there");
|
|
}};
|
|
|
|
var promise = Promise.resolve(thenable);
|
|
promise.then(function(v) {
|
|
ok(v === 5, "promiseThenableThrowsAfterCallback");
|
|
runTest();
|
|
}, function(e) {
|
|
ok(false, "promiseThenableThrowsAfterCallback: Should've resolved");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseThenableRejectThenResolve() {
|
|
var thenable = { then(resolve, reject) {
|
|
reject(new TypeError("Hi there"));
|
|
resolve(5);
|
|
}};
|
|
|
|
var promise = Promise.resolve(thenable);
|
|
promise.then(function(v) {
|
|
ok(false, "promiseThenableRejectThenResolve should have rejected");
|
|
runTest();
|
|
}, function(e) {
|
|
ok(e instanceof TypeError, "promiseThenableRejectThenResolve");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseWithThenReplaced() {
|
|
// Ensure that we call the 'then' on the promise and not the internal then.
|
|
var promise = new Promise(function(resolve, reject) {
|
|
resolve(5);
|
|
});
|
|
|
|
// Rogue `then` always rejects.
|
|
promise.then = function(onFulfill, onReject) {
|
|
onReject(new TypeError("Foo"));
|
|
};
|
|
|
|
var promise2 = Promise.resolve(promise);
|
|
promise2.then(function(v) {
|
|
ok(false, "promiseWithThenReplaced: Should've rejected");
|
|
runTest();
|
|
}, function(e) {
|
|
ok(e instanceof TypeError, "promiseWithThenReplaced");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseStrictHandlers() {
|
|
var promise = Promise.resolve(5);
|
|
promise.then(function() {
|
|
"use strict";
|
|
ok(this === undefined, "Strict mode callback should have this === undefined.");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseStrictExecutorThisArg() {
|
|
new Promise(function(resolve, reject) {
|
|
"use strict";
|
|
ok(this === undefined, "thisArg should be undefined.");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseResolveArray() {
|
|
var p = Promise.resolve([1, 2, 3]);
|
|
ok(p instanceof Promise, "Should return a Promise.");
|
|
p.then(function(v) {
|
|
ok(Array.isArray(v), "Resolved value should be an Array");
|
|
is(v.length, 3, "Length should match");
|
|
is(v[0], 1, "Resolved value should match original");
|
|
is(v[1], 2, "Resolved value should match original");
|
|
is(v[2], 3, "Resolved value should match original");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseResolveThenable() {
|
|
var p = Promise.resolve({ then(onFulfill, onReject) { onFulfill(2); } });
|
|
ok(p instanceof Promise, "Should cast to a Promise.");
|
|
p.then(function(v) {
|
|
is(v, 2, "Should resolve to 2.");
|
|
runTest();
|
|
}, function(e) {
|
|
ok(false, "promiseResolveThenable should've resolved");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
function promiseResolvePromise() {
|
|
var original = Promise.resolve(true);
|
|
var cast = Promise.resolve(original);
|
|
|
|
ok(cast instanceof Promise, "Should cast to a Promise.");
|
|
is(cast, original, "Should return original Promise.");
|
|
cast.then(function(v) {
|
|
is(v, true, "Should resolve to true.");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
// Bug 1009569.
|
|
// Ensure that thenables are run on a clean stack asynchronously.
|
|
// Test case adopted from
|
|
// https://gist.github.com/getify/d64bb01751b50ed6b281#file-bug1-js.
|
|
function promiseResolveThenableCleanStack() {
|
|
function immed(s) { x++; s(); }
|
|
function incX() { x++; }
|
|
|
|
var x = 0;
|
|
var thenable = { then: immed };
|
|
var results = [];
|
|
|
|
var p = Promise.resolve(thenable).then(incX);
|
|
results.push(x);
|
|
|
|
// check what happens after all "next cycle" steps
|
|
// have had a chance to complete
|
|
setTimeout(function() {
|
|
// Result should be [0, 2] since `thenable` will be called async.
|
|
is(results[0], 0, "Expected thenable to be called asynchronously");
|
|
// See Bug 1023547 comment 13 for why this check has to be gated on p.
|
|
p.then(function() {
|
|
results.push(x);
|
|
is(results[1], 2, "Expected thenable to be called asynchronously");
|
|
runTest();
|
|
});
|
|
}, 1000);
|
|
}
|
|
|
|
// Bug 1008467 - Promise fails with "too much recursion".
|
|
// The bug was that the callbacks passed to a thenable would resolve the
|
|
// promise synchronously when the fulfill handler returned a non-thenable.
|
|
//
|
|
// For example:
|
|
// var p = new Promise(function(resolve) {
|
|
// resolve(5);
|
|
// });
|
|
// var m = Promise.resolve(p);
|
|
//
|
|
// At this point `m` is a Promise that is resolved with a thenable `p`, so it
|
|
// calls `p.then()` with two callbacks, both of which would synchronously resolve
|
|
// `m` when `p` invoked them (on account of itself being resolved, possibly
|
|
// synchronously. A chain of these 'Promise resolved by a Promise' would lead to
|
|
// stack overflow.
|
|
function promiseTestAsyncThenableResolution() {
|
|
var k = 3000;
|
|
Promise.resolve().then(function next() {
|
|
k--;
|
|
if (k > 0) return Promise.resolve().then(next);
|
|
return undefined;
|
|
}).then(function() {
|
|
ok(true, "Resolution of a chain of thenables should not be synchronous.");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
// Bug 1062323
|
|
function promiseWrapperAsyncResolution() {
|
|
var p = new Promise(function(resolve, reject) {
|
|
resolve();
|
|
});
|
|
|
|
var results = [];
|
|
var q = p.then(function() {
|
|
results.push("1-1");
|
|
}).then(function() {
|
|
results.push("1-2");
|
|
}).then(function() {
|
|
results.push("1-3");
|
|
});
|
|
|
|
var r = p.then(function() {
|
|
results.push("2-1");
|
|
}).then(function() {
|
|
results.push("2-2");
|
|
}).then(function() {
|
|
results.push("2-3");
|
|
});
|
|
|
|
Promise.all([q, r]).then(function() {
|
|
var match = results[0] == "1-1" &&
|
|
results[1] == "2-1" &&
|
|
results[2] == "1-2" &&
|
|
results[3] == "2-2" &&
|
|
results[4] == "1-3" &&
|
|
results[5] == "2-3";
|
|
info(results);
|
|
ok(match, "Chained promises should resolve asynchronously.");
|
|
runTest();
|
|
}, function() {
|
|
ok(false, "promiseWrapperAsyncResolution: One of the promises failed.");
|
|
runTest();
|
|
});
|
|
}
|
|
|
|
var tests = [ promiseResolve, promiseReject,
|
|
promiseException, promiseGC,
|
|
promiseAsync_TimeoutResolveThen,
|
|
promiseAsync_ResolveTimeoutThen,
|
|
promiseAsync_ResolveThenTimeout,
|
|
promiseAsync_SyncXHR,
|
|
promiseDoubleThen, promiseThenException,
|
|
promiseThenCatchThen, promiseRejectThenCatchThen,
|
|
promiseRejectThenCatchThen2,
|
|
promiseRejectThenCatchExceptionThen,
|
|
promiseThenCatchOrderingResolve,
|
|
promiseThenCatchOrderingReject,
|
|
promiseNestedPromise, promiseNestedNestedPromise,
|
|
promiseWrongNestedPromise, promiseLoop,
|
|
promiseStaticReject, promiseStaticResolve,
|
|
promiseResolveNestedPromise,
|
|
promiseResolveNoArg,
|
|
promiseRejectNoArg,
|
|
promiseThenNoArg,
|
|
promiseThenUndefinedResolveFunction,
|
|
promiseThenNullResolveFunction,
|
|
promiseCatchNoArg,
|
|
promiseRejectNoHandler,
|
|
promiseSimpleThenableResolve,
|
|
promiseSimpleThenableReject,
|
|
promiseThenableThrowsBeforeCallback,
|
|
promiseThenableThrowsAfterCallback,
|
|
promiseThenableRejectThenResolve,
|
|
promiseWithThenReplaced,
|
|
promiseStrictHandlers,
|
|
promiseStrictExecutorThisArg,
|
|
promiseResolveArray,
|
|
promiseResolveThenable,
|
|
promiseResolvePromise,
|
|
promiseResolveThenableCleanStack,
|
|
promiseTestAsyncThenableResolution,
|
|
promiseWrapperAsyncResolution,
|
|
];
|
|
|
|
function runTest() {
|
|
if (!tests.length) {
|
|
SimpleTest.finish();
|
|
return;
|
|
}
|
|
|
|
var test = tests.shift();
|
|
test();
|
|
}
|
|
|
|
SimpleTest.waitForExplicitFinish();
|
|
SimpleTest.requestFlakyTimeout("untriaged");
|
|
runTest();
|
|
// -->
|
|
</script>
|
|
</pre>
|
|
</body>
|
|
</html>
|