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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/jit-test/tests/promise/promise-race-with-non-default-resolving.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>
Diffstat (limited to 'js/src/jit-test/tests/promise/promise-race-with-non-default-resolving.js')
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diff --git a/js/src/jit-test/tests/promise/promise-race-with-non-default-resolving.js b/js/src/jit-test/tests/promise/promise-race-with-non-default-resolving.js
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+function newPromiseCapability() {
+ var resolve, reject, promise = new Promise(function(r1, r2) {
+ resolve = r1;
+ reject = r2;
+ });
+ return {promise, resolve, reject};
+}
+
+function neverCalled() {
+ // Quit with non-zero exit code to ensure a test suite error is shown,
+ // even when this function is called within promise handlers which normally
+ // swallow any exceptions.
+ quit(1);
+}
+
+var {promise, resolve} = newPromiseCapability();
+
+var getterCount = 0;
+
+class P extends Promise {
+ constructor(executor) {
+ var {promise, resolve, reject} = newPromiseCapability();
+
+ executor(function(v) {
+ // Resolve the promise.
+ resolve(v);
+
+ // But then return an object from the resolve function. This object
+ // must be treated as the resolution value for the otherwise
+ // skipped promise which gets created when Promise.prototype.then is
+ // called in PerformPromiseRace.
+ return {
+ get then() {
+ getterCount++;
+ }
+ };
+ }, neverCalled);
+
+ return promise;
+ }
+
+ // Default to the standard Promise.resolve function, so we don't create
+ // another instance of this class when resolving the passed promise objects
+ // in Promise.race.
+ static resolve(v) {
+ return Promise.resolve(v);
+ }
+}
+
+P.race([promise]);
+
+resolve(0);
+
+drainJobQueue();
+
+assertEq(getterCount, 1);