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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/tests/test262/built-ins/Promise/resolve-prms-cstm-then-immed.js
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+// |reftest| async
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+ Resolving with a resolved Promise instance whose `then` method has been
+ overridden from within the executor function
+es6id: 25.4.3.1
+info: |
+ [...]
+ 8. Let resolvingFunctions be CreateResolvingFunctions(promise).
+ 9. Let completion be Call(executor, undefined,
+ «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
+
+ 25.4.1.3.2 Promise Resolve Functions
+ [...]
+ 8. Let then be Get(resolution, "then").
+ 9. If then is an abrupt completion, then
+ [...]
+ 10. Let thenAction be then.[[value]].
+ 11. If IsCallable(thenAction) is false, then
+ [...]
+ 12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
+ «promise, resolution, thenAction»)
+flags: [async]
+---*/
+
+var returnValue = null;
+var value = {};
+var lateCallCount = 0;
+var thenable = new Promise(function(resolve) {
+ resolve();
+});
+
+thenable.then = function(resolve) {
+ resolve(value);
+};
+
+var promise = new Promise(function(resolve) {
+ returnValue = resolve(thenable);
+});
+
+assert.sameValue(returnValue, undefined, '"resolve" return value');
+
+thenable.then = function() {
+ lateCallCount += 1;
+};
+
+promise.then(function(val) {
+ if (val !== value) {
+ $DONE('The promise should be fulfilled with the provided value.');
+ return;
+ }
+
+ if (lateCallCount > 0) {
+ $DONE('The `then` method should be executed synchronously.');
+ }
+
+ $DONE();
+}, function() {
+ $DONE('The promise should not be rejected.');
+});