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40 lines
1.3 KiB
JavaScript
40 lines
1.3 KiB
JavaScript
// Copyright (C) 2019 Sergey Rubanov. 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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Invocation of the instance's `then` method
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esid: sec-promise.any
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info: |
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5. Let result be PerformPromiseAny(iteratorRecord, C, promiseCapability).
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6. If result is an abrupt completion, then
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a. If iteratorRecord.[[Done]] is false, set result to IteratorClose(iteratorRecord, result).
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b. IfAbruptRejectPromise(result, promiseCapability).
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Runtime Semantics: PerformPromiseAny
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r. Perform ? Invoke(nextPromise, "then", « resultCapability.[[Resolve]], rejectElement »).
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flags: [async]
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features: [Promise.any, arrow-function]
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---*/
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let promise = Promise.resolve();
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let boundThen = promise.then.bind(promise);
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let callCount = 0;
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promise.then = function(resolver, rejectElement) {
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assert.sameValue(this, promise);
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assert.sameValue(typeof resolver, 'function');
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assert.sameValue(resolver.length, 1, 'resolver.length is 1');
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assert.sameValue(typeof rejectElement, 'function');
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assert.sameValue(rejectElement.length, 1, 'rejectElement.length is 0');
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callCount++;
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return boundThen(resolver, rejectElement);
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};
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Promise.any([promise]).then(() => {
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assert.sameValue(callCount, 1);
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$DONE();
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}, $DONE);
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