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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html>
+<head>
+ <title>Basic Promise Test</title>
+ <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript"><!--
+
+function promiseResolve() {
+ ok(Promise, "Promise object should exist");
+
+ var promise = new Promise(function(resolve, reject) {
+ ok(resolve, "Promise.resolve exists");
+ ok(reject, "Promise.reject exists");
+
+ resolve(42);
+ }).then(function(what) {
+ ok(true, "Then - resolveCb has been called");
+ is(what, 42, "ResolveCb received 42");
+ runTest();
+ }, function() {
+ ok(false, "Then - rejectCb has been called");
+ runTest();
+ });
+}
+
+function promiseResolveNoArg() {
+ var promise = new Promise(function(resolve, reject) {
+ ok(resolve, "Promise.resolve exists");
+ ok(reject, "Promise.reject exists");
+
+ resolve();
+ }).then(function(what) {
+ ok(true, "Then - resolveCb has been called");
+ is(what, undefined, "ResolveCb received undefined");
+ runTest();
+ }, function() {
+ ok(false, "Then - rejectCb has been called");
+ runTest();
+ });
+}
+
+function promiseReject() {
+ var promise = new Promise(function(resolve, reject) {
+ reject(42);
+ }).then(function(what) {
+ ok(false, "Then - resolveCb has been called");
+ runTest();
+ }, function(what) {
+ ok(true, "Then - rejectCb has been called");
+ is(what, 42, "RejectCb received 42");
+ runTest();
+ });
+}
+
+function promiseRejectNoHandler() {
+ // This test only checks that the code that reports unhandled errors in the
+ // Promises implementation does not crash or leak.
+ var promise = new Promise(function(res, rej) {
+ noSuchMethod();
+ });
+ runTest();
+}
+
+function promiseRejectNoArg() {
+ var promise = new Promise(function(resolve, reject) {
+ reject();
+ }).then(function(what) {
+ ok(false, "Then - resolveCb has been called");
+ runTest();
+ }, function(what) {
+ ok(true, "Then - rejectCb has been called");
+ is(what, undefined, "RejectCb received undefined");
+ runTest();
+ });
+}
+
+function promiseException() {
+ var promise = new Promise(function(resolve, reject) {
+ throw 42;
+ }).then(function(what) {
+ ok(false, "Then - resolveCb has been called");
+ runTest();
+ }, function(what) {
+ ok(true, "Then - rejectCb has been called");
+ is(what, 42, "RejectCb received 42");
+ runTest();
+ });
+}
+
+function promiseGC() {
+ var resolve;
+ var promise = new Promise(function(r1, r2) {
+ resolve = r1;
+ }).then(function(what) {
+ ok(true, "Then - promise is still alive");
+ runTest();
+ });
+
+ promise = null;
+
+ SpecialPowers.gc();
+ SpecialPowers.forceGC();
+ SpecialPowers.forceCC();
+
+ resolve(42);
+}
+
+function promiseAsync_TimeoutResolveThen() {
+ var handlerExecuted = false;
+
+ setTimeout(function() {
+ ok(handlerExecuted, "Handler should have been called before the timeout.");
+
+ // Allow other assertions to run so the test could fail before the next one.
+ setTimeout(runTest, 0);
+ }, 0);
+
+ Promise.resolve().then(function() {
+ handlerExecuted = true;
+ });
+
+ ok(!handlerExecuted, "Handlers are not called before 'then' returns.");
+}
+
+function promiseAsync_ResolveTimeoutThen() {
+ var handlerExecuted = false;
+
+ var promise = Promise.resolve();
+
+ setTimeout(function() {
+ ok(handlerExecuted, "Handler should have been called before the timeout.");
+
+ // Allow other assertions to run so the test could fail before the next one.
+ setTimeout(runTest, 0);
+ }, 0);
+
+ promise.then(function() {
+ handlerExecuted = true;
+ });
+
+ ok(!handlerExecuted, "Handlers are not called before 'then' returns.");
+}
+
+function promiseAsync_ResolveThenTimeout() {
+ var handlerExecuted = false;
+
+ Promise.resolve().then(function() {
+ handlerExecuted = true;
+ });
+
+ setTimeout(function() {
+ ok(handlerExecuted, "Handler should have been called before the timeout.");
+
+ // Allow other assertions to run so the test could fail before the next one.
+ setTimeout(runTest, 0);
+ }, 0);
+
+ ok(!handlerExecuted, "Handlers are not called before 'then' returns.");
+}
+
+function promiseAsync_SyncXHR()
+{
+ var handlerExecuted = false;
+
+ Promise.resolve().then(function() {
+ handlerExecuted = true;
+
+ // Allow other assertions to run so the test could fail before the next one.
+ setTimeout(runTest, 0);
+ });
+
+ ok(!handlerExecuted, "Handlers are not called until the next microtask.");
+
+ var xhr = new XMLHttpRequest();
+ xhr.open("GET", "testXHR.txt", false);
+ xhr.send(null);
+
+ todo(!handlerExecuted, "Sync XHR should not trigger microtask execution.");
+}
+
+function promiseDoubleThen() {
+ var steps = 0;
+ var promise = new Promise(function(r1, r2) {
+ r1(42);
+ });
+
+ promise.then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 42, "Value == 42");
+ steps++;
+ }, function(what) {
+ ok(false, "Then.reject has been called");
+ });
+
+ promise.then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(steps, 1, "Then.resolve - step == 1");
+ is(what, 42, "Value == 42");
+ runTest();
+ }, function(what) {
+ ok(false, "Then.reject has been called");
+ });
+}
+
+function promiseThenException() {
+ var promise = new Promise(function(resolve, reject) {
+ resolve(42);
+ });
+
+ promise.then(function(what) {
+ ok(true, "Then.resolve has been called");
+ throw "booh";
+ }).catch(function(e) {
+ ok(true, "window.onerror has been called!");
+ runTest();
+ });
+}
+
+function promiseThenCatchThen() {
+ var promise = new Promise(function(resolve, reject) {
+ resolve(42);
+ });
+
+ var promise2 = promise.then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 42, "Value == 42");
+ return what + 1;
+ }, function(what) {
+ ok(false, "Then.reject has been called");
+ });
+
+ isnot(promise, promise2, "These 2 promise objs are different");
+
+ promise2.then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 43, "Value == 43");
+ return what + 1;
+ }, function(what) {
+ ok(false, "Then.reject has been called");
+ }).catch(function() {
+ ok(false, "Catch has been called");
+ }).then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 44, "Value == 44");
+ runTest();
+ }, function(what) {
+ ok(false, "Then.reject has been called");
+ });
+}
+
+function promiseThenNoArg() {
+ var promise = new Promise(function(resolve, reject) {
+ resolve(42);
+ });
+
+ var clone = promise.then();
+ isnot(promise, clone, "These 2 promise objs are different");
+ promise.then(function(v) {
+ clone.then(function(cv) {
+ is(v, cv, "Both resolve to the same value");
+ runTest();
+ });
+ });
+}
+
+function promiseThenUndefinedResolveFunction() {
+ var promise = new Promise(function(resolve, reject) {
+ reject(42);
+ });
+
+ try {
+ promise.then(undefined, function(v) {
+ is(v, 42, "Promise rejected with 42");
+ runTest();
+ });
+ } catch (e) {
+ ok(false, "then should not throw on undefined resolve function");
+ }
+}
+
+function promiseThenNullResolveFunction() {
+ var promise = new Promise(function(resolve, reject) {
+ reject(42);
+ });
+
+ try {
+ promise.then(null, function(v) {
+ is(v, 42, "Promise rejected with 42");
+ runTest();
+ });
+ } catch (e) {
+ ok(false, "then should not throw on null resolve function");
+ }
+}
+
+function promiseRejectThenCatchThen() {
+ var promise = new Promise(function(resolve, reject) {
+ reject(42);
+ });
+
+ var promise2 = promise.then(function(what) {
+ ok(false, "Then.resolve has been called");
+ }, function(what) {
+ ok(true, "Then.reject has been called");
+ is(what, 42, "Value == 42");
+ return what + 1;
+ });
+
+ isnot(promise, promise2, "These 2 promise objs are different");
+
+ promise2.then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 43, "Value == 43");
+ return what+1;
+ }).catch(function(what) {
+ ok(false, "Catch has been called");
+ }).then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 44, "Value == 44");
+ runTest();
+ });
+}
+
+function promiseRejectThenCatchThen2() {
+ var promise = new Promise(function(resolve, reject) {
+ reject(42);
+ });
+
+ promise.then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 42, "Value == 42");
+ return what+1;
+ }).catch(function(what) {
+ is(what, 42, "Value == 42");
+ ok(true, "Catch has been called");
+ return what+1;
+ }).then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 43, "Value == 43");
+ runTest();
+ });
+}
+
+function promiseRejectThenCatchExceptionThen() {
+ var promise = new Promise(function(resolve, reject) {
+ reject(42);
+ });
+
+ promise.then(function(what) {
+ ok(false, "Then.resolve has been called");
+ }, function(what) {
+ ok(true, "Then.reject has been called");
+ is(what, 42, "Value == 42");
+ throw(what + 1);
+ }).catch(function(what) {
+ ok(true, "Catch has been called");
+ is(what, 43, "Value == 43");
+ return what + 1;
+ }).then(function(what) {
+ ok(true, "Then.resolve has been called");
+ is(what, 44, "Value == 44");
+ runTest();
+ });
+}
+
+function promiseThenCatchOrderingResolve() {
+ var global = 0;
+ var f = new Promise(function(r1, r2) {
+ r1(42);
+ });
+
+ f.then(function() {
+ f.then(function() {
+ global++;
+ });
+ f.catch(function() {
+ global++;
+ });
+ f.then(function() {
+ global++;
+ });
+ setTimeout(function() {
+ is(global, 2, "Many steps... should return 2");
+ runTest();
+ }, 0);
+ });
+}
+
+function promiseThenCatchOrderingReject() {
+ var global = 0;
+ var f = new Promise(function(r1, r2) {
+ r2(42);
+ })
+
+ f.then(function() {}, function() {
+ f.then(function() {
+ global++;
+ });
+ f.catch(function() {
+ global++;
+ });
+ f.then(function() {}, function() {
+ global++;
+ });
+ setTimeout(function() {
+ is(global, 2, "Many steps... should return 2");
+ runTest();
+ }, 0);
+ });
+}
+
+function promiseCatchNoArg() {
+ var promise = new Promise(function(resolve, reject) {
+ reject(42);
+ });
+
+ var clone = promise.catch();
+ isnot(promise, clone, "These 2 promise objs are different");
+ promise.catch(function(v) {
+ clone.catch(function(cv) {
+ is(v, cv, "Both reject to the same value");
+ runTest();
+ });
+ });
+}
+
+function promiseNestedPromise() {
+ new Promise(function(resolve, reject) {
+ resolve(new Promise(function(resolve, reject) {
+ ok(true, "Nested promise is executed");
+ resolve(42);
+ }));
+ }).then(function(value) {
+ is(value, 42, "Nested promise is executed and then == 42");
+ runTest();
+ });
+}
+
+function promiseNestedNestedPromise() {
+ new Promise(function(resolve, reject) {
+ resolve(new Promise(function(resolve, reject) {
+ ok(true, "Nested promise is executed");
+ resolve(42);
+ }).then(function(what) { return what+1; }));
+ }).then(function(value) {
+ is(value, 43, "Nested promise is executed and then == 43");
+ runTest();
+ });
+}
+
+function promiseWrongNestedPromise() {
+ new Promise(function(resolve, reject) {
+ resolve(new Promise(function(r, r2) {
+ ok(true, "Nested promise is executed");
+ r(42);
+ }));
+ reject(42);
+ }).then(function(value) {
+ is(value, 42, "Nested promise is executed and then == 42");
+ runTest();
+ }, function(value) {
+ ok(false, "This is wrong");
+ });
+}
+
+function promiseLoop() {
+ new Promise(function(resolve, reject) {
+ resolve(new Promise(function(r1, r2) {
+ ok(true, "Nested promise is executed");
+ r1(new Promise(function(r1, r2) {
+ ok(true, "Nested nested promise is executed");
+ r1(42);
+ }));
+ }));
+ }).then(function(value) {
+ is(value, 42, "Nested nested promise is executed and then == 42");
+ runTest();
+ }, function(value) {
+ ok(false, "This is wrong");
+ });
+}
+
+function promiseStaticReject() {
+ var promise = Promise.reject(42).then(function(what) {
+ ok(false, "This should not be called");
+ }, function(what) {
+ is(what, 42, "Value == 42");
+ runTest();
+ });
+}
+
+function promiseStaticResolve() {
+ var promise = Promise.resolve(42).then(function(what) {
+ is(what, 42, "Value == 42");
+ runTest();
+ }, function() {
+ ok(false, "This should not be called");
+ });
+}
+
+function promiseResolveNestedPromise() {
+ var promise = Promise.resolve(new Promise(function(r, r2) {
+ ok(true, "Nested promise is executed");
+ r(42);
+ }, function() {
+ ok(false, "This should not be called");
+ })).then(function(what) {
+ is(what, 42, "Value == 42");
+ runTest();
+ }, function() {
+ ok(false, "This should not be called");
+ });
+}
+
+function promiseSimpleThenableResolve() {
+ var thenable = { then: function(resolve) { resolve(5); } };
+ var promise = new Promise(function(resolve, reject) {
+ resolve(thenable);
+ });
+
+ promise.then(function(v) {
+ ok(v === 5, "promiseSimpleThenableResolve");
+ runTest();
+ }, function(e) {
+ ok(false, "promiseSimpleThenableResolve: Should not reject");
+ });
+}
+
+function promiseSimpleThenableReject() {
+ var thenable = { then: function(resolve, reject) { reject(5); } };
+ var promise = new Promise(function(resolve, reject) {
+ resolve(thenable);
+ });
+
+ promise.then(function() {
+ ok(false, "promiseSimpleThenableReject: Should not resolve");
+ runTest();
+ }, function(e) {
+ ok(e === 5, "promiseSimpleThenableReject");
+ runTest();
+ });
+}
+
+function promiseThenableThrowsBeforeCallback() {
+ var thenable = { then: function(resolve) {
+ throw new TypeError("Hi there");
+ resolve(5);
+ }};
+
+ var promise = Promise.resolve(thenable);
+ promise.then(function(v) {
+ ok(false, "promiseThenableThrowsBeforeCallback: Should've rejected");
+ runTest();
+ }, function(e) {
+ ok(e instanceof TypeError, "promiseThenableThrowsBeforeCallback");
+ runTest();
+ });
+}
+
+function promiseThenableThrowsAfterCallback() {
+ var thenable = { then: function(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: function(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() {
+ var promise = 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: function(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);
+ }).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>
+