// Copyright (C) 2019 Leo Balter. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- description: > Gets constructor's `resolve` method once from zero to many invocations. esid: sec-promise.all info: | Runtime Semantics: PerformPromiseAll 1. Let promiseResolve be ? Get(constructor, `"resolve"`). 1. If IsCallable(promiseResolve) is false, throw a TypeError exception. ... 1. Repeat, ... 1. Let nextPromise be ? Call(promiseResolve, constructor, « nextValue »). ---*/ var p1 = Promise.resolve(1); var p2 = Promise.resolve(1); var p3 = Promise.reject(1); var p4 = Promise.resolve(1); var resolve = Promise.resolve; var getCount = 0; var callCount = 0; Object.defineProperty(Promise, 'resolve', { configurable: true, get() { getCount += 1; return function() { callCount += 1; return resolve.apply(Promise, arguments); }; } }); Promise.all([p1, p2, p3, p4]); assert.sameValue( getCount, 1, 'Got `resolve` only once for each iterated value' ); assert.sameValue( callCount, 4, '`resolve` invoked once for each iterated value' ); reportCompare(0, 0);