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| 1 // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --harmony-async-await --allow-natives-syntax |
| 6 |
| 7 function assertEqualsAsync(expected, run, msg) { |
| 8 var actual; |
| 9 var hadValue = false; |
| 10 var hadError = false; |
| 11 var promise = run(); |
| 12 |
| 13 if (typeof promise !== "object" || typeof promise.then !== "function") { |
| 14 throw new MjsUnitAssertionError( |
| 15 "Expected " + run.toString() + |
| 16 " to return a Promise, but it returned " + PrettyPrint(promise)); |
| 17 } |
| 18 |
| 19 promise.then(function(value) { hadValue = true; actual = value; }, |
| 20 function(error) { hadError = true; actual = error; }); |
| 21 |
| 22 assertFalse(hadValue || hadError); |
| 23 |
| 24 %RunMicrotasks(); |
| 25 |
| 26 if (hadError) throw actual; |
| 27 |
| 28 assertTrue( |
| 29 hadValue, "Expected '" + run.toString() + "' to produce a value"); |
| 30 |
| 31 assertEquals(expected, actual, msg); |
| 32 }; |
| 33 |
| 34 class BaseClass { |
| 35 constructor() { |
| 36 return async () => new.target; |
| 37 } |
| 38 } |
| 39 |
| 40 class ChildClass extends BaseClass {} |
| 41 |
| 42 assertEqualsAsync(BaseClass, () => new BaseClass()()); |
| 43 assertEqualsAsync(ChildClass, () => new ChildClass()()); |
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