| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| es6id: 25.4.5.3 |
| description: > |
| The Promise built-in is used when the `this` value has no `constructor` property |
| info: | |
| 1. Let promise be the this value. |
| 2. If IsPromise(promise) is false, throw a TypeError exception. |
| 3. Let C be SpeciesConstructor(promise, %Promise%). |
| 4. ReturnIfAbrupt(C). |
| 5. Let resultCapability be NewPromiseCapability(C). |
| ---*/ |
| |
| var p1 = new Promise(function() {}); |
| delete p1.constructor; |
| |
| var p2 = p1.then(); |
| |
| assert(p2 instanceof Promise); |
