JSTests/test262/test/built-ins/Promise/reject-via-fn-deferred.js

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Rejecting through deferred invocation of the provided resolving function
es6id: 25.4.3.1
info: |
    [...]
    9. Let completion be Call(executor, undefined,
       «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
    10. If completion is an abrupt completion, then
        [...]
    11. Return promise.

    25.4.1.3.1 Promise Reject Functions
    [...]
    6. Return RejectPromise(promise, reason).
flags: [async]
---*/

var thenable = new Promise(function() {});
var returnValue = null;
var reject;
var p = new Promise(function(_, _reject) {
  reject = _reject;
});

p.then(function() {
  $DONE('The promise should not be fulfilled.');
}, function(x) {
  if (x !== thenable) {
    $DONE('The promise should be rejected with the resolution value.');
    return;
  }

  $DONE();
});

returnValue = reject(thenable);

assert.sameValue(returnValue, undefined, '"reject" function return value');