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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 14:29:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 14:29:10 +0000
commit2aa4a82499d4becd2284cdb482213d541b8804dd (patch)
treeb80bf8bf13c3766139fbacc530efd0dd9d54394c /js/src/tests/test262/built-ins/Promise/all/resolve-thenable.js
parentInitial commit. (diff)
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Adding upstream version 86.0.1.upstream/86.0.1upstream
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 thenable object value
+es6id: 25.4.4.1
+info: |
+ [...]
+ 6. Let promiseCapability be NewPromiseCapability(C).
+ [...]
+ 11. Let result be PerformPromiseAll(iteratorRecord, C, promiseCapability).
+ [...]
+
+ 25.4.4.1.1 Runtime Semantics: PerformPromiseAll
+ [...]
+ 6. Repeat
+ [...]
+ d. If next is false,
+ [...]
+ iii. If remainingElementsCount.[[value]] is 0,
+ 1. Let valuesArray be CreateArrayFromList(values).
+ 2. Let resolveResult be Call(resultCapability.[[Resolve]],
+ undefined, «valuesArray»).
+ 3. ReturnIfAbrupt(resolveResult)
+ iv. Return resultCapability.[[Promise]].
+
+ 7.3.16 CreateArrayFromList (elements)
+ [...]
+ 2. Let array be ArrayCreate(0) (see 9.4.2.2).
+
+ 9.4.2.2 ArrayCreate(length, proto)
+ [...]
+ 4. If the proto argument was not passed, let proto be the intrinsic object
+ %ArrayPrototype%.
+ 5. Let A be a newly created Array exotic object.
+ [...]
+ 8. Set the [[Prototype]] internal slot of A to proto.
+
+ 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 value = {};
+var promise;
+
+try {
+ Array.prototype.then = function(resolve) {
+ resolve(value);
+ };
+
+ promise = Promise.all([]);
+} finally {
+ delete Array.prototype.then;
+}
+
+promise.then(function(val) {
+ if (val !== value) {
+ $DONE('The promise should be resolved with the expected value.');
+ return;
+ }
+
+ $DONE();
+}, function() {
+ $DONE('The promise should not be rejected.');
+});