invoke-resolve.js - mozsearch

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// Copyright (C) 2019 Leo Balter. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

description: >

  Invocation of the constructor's `resolve` method

esid: sec-promise.allsettled

info: |

  6. Let result be PerformPromiseAllSettled(iteratorRecord, C, promiseCapability).

  Runtime Semantics: PerformPromiseAllSettled

  6. Repeat

...

    i. Let nextPromise be ? Invoke(constructor, "resolve", « nextValue »).

...

    z. Perform ? Invoke(nextPromise, "then", « resolveElement, rejectElement »).

features: [Promise.allSettled]

---*/

var p1 = new Promise(function() {});

var p2 = new Promise(function() {});

var p3 = new Promise(function() {});

var resolve = Promise.resolve;

var callCount = 0;

var current = p1;

var next = p2;

var afterNext = p3;

Promise.resolve = function(nextValue) {

  assert.sameValue(

    nextValue, current, '`resolve` invoked with next iterated value'

);

  assert.sameValue(

    arguments.length, 1, '`resolve` invoked with a single argument'

);

  assert.sameValue(this, Promise, '`this` value is the constructor');

  current = next;

  next = afterNext;

  afterNext = null;

  callCount += 1;

  return resolve.apply(Promise, arguments);

};

Promise.allSettled([p1, p2, p3]);

assert.sameValue(

  callCount, 3, '`resolve` invoked once for each iterated value'

);

reportCompare(0, 0);