| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| description: Resolving with a reference to the promise itself |
| es6id: 25.4.4.3 |
| info: | |
| [...] |
| 6. Let promiseCapability be NewPromiseCapability(C). |
| [...] |
| 11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C). |
| [...] |
| |
| 25.4.4.3.1 Runtime Semantics: PerformPromiseRace |
| 1. Repeat |
| [...] |
| j. Let result be Invoke(nextPromise, "then", |
| «promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»). |
| |
| 25.4.1.3.2 Promise Resolve Functions |
| [...] |
| 6. If SameValue(resolution, promise) is true, then |
| a. Let selfResolutionError be a newly created TypeError object. |
| b. Return RejectPromise(promise, selfResolutionError). |
| flags: [async] |
| ---*/ |
| |
| var self, resolve; |
| var builtinResolve = Promise.resolve; |
| var thenable = { |
| then: function(r) { |
| resolve = r; |
| } |
| }; |
| |
| try { |
| Promise.resolve = function(v) { |
| return v; |
| }; |
| self = Promise.race([thenable]); |
| } finally { |
| Promise.resolve = builtinResolve; |
| } |
| |
| resolve(self); |
| |
| self.then(function() { |
| $DONE('The promise should not be fulfilled.'); |
| }, function(value) { |
| if (!value) { |
| $DONE('The promise should be rejected with a value.'); |
| return; |
| } |
| if (value.constructor !== TypeError) { |
| $DONE('The promise should be rejected with a TypeError instance.'); |
| return; |
| } |
| $DONE(); |
| }); |