mirror of https://github.com/tc39/test262.git
38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
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// Copyright (C) 2024 Julián Espina. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: |
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assert.throwsAsync returns a promise that never settles if func returns a thenable that never settles.
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flags: [async]
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includes: [asyncHelpers.js]
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---*/
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var realDone = $DONE;
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var doneCalls = 0
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globalThis.$DONE = function () {
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doneCalls++;
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}
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function delay() {
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var later = Promise.resolve();
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for (var i = 0; i < 100; i++) {
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later = later.then();
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}
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return later;
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}
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(async function () {
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// Spy on the promise returned by an invocation of assert.throwsAsync
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// with a function that returns a thenable which never settles.
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var neverSettlingThenable = { then: function () { } };
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const p = assert.throwsAsync(TypeError, function () { return neverSettlingThenable });
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assert(p instanceof Promise, "assert.throwsAsync should return a promise");
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p.then($DONE, $DONE);
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})()
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// Give it a long time to try.
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.then(delay, delay)
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.then(function () {
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assert.sameValue(doneCalls, 0, "$DONE should not have been called")
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})
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.then(realDone, realDone);
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