1 // Copyright 2014 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: --expose-debug-as debug 6 // Test the mirror object for promises. 7 8 function MirrorRefCache(json_refs) { 9 var tmp = eval('(' + json_refs + ')'); 10 this.refs_ = []; 11 for (var i = 0; i < tmp.length; i++) { 12 this.refs_[tmp[i].handle] = tmp[i]; 13 } 14 } 15 16 MirrorRefCache.prototype.lookup = function(handle) { 17 return this.refs_[handle]; 18 } 19 20 function testPromiseMirror(promise, status, value) { 21 // Create mirror and JSON representation. 22 var mirror = debug.MakeMirror(promise); 23 var serializer = debug.MakeMirrorSerializer(); 24 var json = JSON.stringify(serializer.serializeValue(mirror)); 25 var refs = new MirrorRefCache( 26 JSON.stringify(serializer.serializeReferencedObjects())); 27 28 // Check the mirror hierachy. 29 assertTrue(mirror instanceof debug.Mirror); 30 assertTrue(mirror instanceof debug.ValueMirror); 31 assertTrue(mirror instanceof debug.ObjectMirror); 32 assertTrue(mirror instanceof debug.PromiseMirror); 33 34 // Check the mirror properties. 35 assertEquals(status, mirror.status()); 36 assertTrue(mirror.isPromise()); 37 assertEquals('promise', mirror.type()); 38 assertFalse(mirror.isPrimitive()); 39 assertEquals("Object", mirror.className()); 40 assertEquals("#<Promise>", mirror.toText()); 41 assertSame(promise, mirror.value()); 42 assertTrue(mirror.promiseValue() instanceof debug.Mirror); 43 assertEquals(value, mirror.promiseValue().value()); 44 45 // Parse JSON representation and check. 46 var fromJSON = eval('(' + json + ')'); 47 assertEquals('promise', fromJSON.type); 48 assertEquals('Object', fromJSON.className); 49 assertEquals('function', refs.lookup(fromJSON.constructorFunction.ref).type); 50 assertEquals('Promise', refs.lookup(fromJSON.constructorFunction.ref).name); 51 assertEquals(status, fromJSON.status); 52 assertEquals(value, refs.lookup(fromJSON.promiseValue.ref).value); 53 } 54 55 // Test a number of different promises. 56 var resolved = new Promise(function(resolve, reject) { resolve() }); 57 var rejected = new Promise(function(resolve, reject) { reject() }); 58 var pending = new Promise(function(resolve, reject) {}); 59 60 testPromiseMirror(resolved, "resolved", undefined); 61 testPromiseMirror(rejected, "rejected", undefined); 62 testPromiseMirror(pending, "pending", undefined); 63 64 var resolvedv = new Promise(function(resolve, reject) { resolve('resolve') }); 65 var rejectedv = new Promise(function(resolve, reject) { reject('reject') }); 66 var thrownv = new Promise(function(resolve, reject) { throw 'throw' }); 67 68 testPromiseMirror(resolvedv, "resolved", 'resolve'); 69 testPromiseMirror(rejectedv, "rejected", 'reject'); 70 testPromiseMirror(thrownv, "rejected", 'throw'); 71 72 // Test internal properties of different promises. 73 var m1 = debug.MakeMirror(new Promise( 74 function(resolve, reject) { resolve(1) })); 75 var ip = m1.internalProperties(); 76 assertEquals(2, ip.length); 77 assertEquals("[[PromiseStatus]]", ip[0].name()); 78 assertEquals("[[PromiseValue]]", ip[1].name()); 79 assertEquals("resolved", ip[0].value().value()); 80 assertEquals(1, ip[1].value().value()); 81 82 var m2 = debug.MakeMirror(new Promise(function(resolve, reject) { reject(2) })); 83 ip = m2.internalProperties(); 84 assertEquals("rejected", ip[0].value().value()); 85 assertEquals(2, ip[1].value().value()); 86 87 var m3 = debug.MakeMirror(new Promise(function(resolve, reject) { })); 88 ip = m3.internalProperties(); 89 assertEquals("pending", ip[0].value().value()); 90 assertEquals("undefined", typeof(ip[1].value().value())); 91
