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 assertEqualsAsync("[1,2,3]", () => (function() { 35 return (async () => JSON.stringify([...arguments]))(); 36 })(1, 2, 3)); 37 38 assertEqualsAsync("[4,5,6]", 39 () => (function() { 40 return (async () => { 41 return JSON.stringify([...await arguments]) })(); 42 })(4, 5, 6)); 43
