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(x) { 36 this.name_ = x; 37 } 38 get name() { return this.name_; } 39 }; 40 41 class DeferredSuperCall extends BaseClass { 42 constructor(x) { 43 return async() => super(x); 44 } 45 }; 46 47 assertEqualsAsync( 48 "LexicalSuperCall", 49 () => new DeferredSuperCall("LexicalSuperCall")().then(x => x.name)); 50 51 52 class DeferredSuperProperty extends BaseClass { 53 deferredName() { return async() => super.name; } 54 }; 55 56 assertEqualsAsync( 57 "LexicalSuperProperty", 58 () => new DeferredSuperProperty("LexicalSuperProperty").deferredName()()); 59
