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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: --expose-debug-as debug --harmony-async-await --allow-natives-syntax | |
6 // Test the mirror object for promises. | |
7 | |
8 var AsyncFunction = (async function() {}).constructor; | |
9 | |
10 function MirrorRefCache(json_refs) { | |
11 var tmp = eval('(' + json_refs + ')'); | |
12 this.refs_ = []; | |
13 for (var i = 0; i < tmp.length; i++) { | |
14 this.refs_[tmp[i].handle] = tmp[i]; | |
15 } | |
16 } | |
17 | |
18 MirrorRefCache.prototype.lookup = function(handle) { | |
19 return this.refs_[handle]; | |
20 } | |
21 | |
22 function testPromiseMirror(promise, status, value) { | |
23 // Create mirror and JSON representation. | |
24 var mirror = debug.MakeMirror(promise); | |
25 var serializer = debug.MakeMirrorSerializer(); | |
26 var json = JSON.stringify(serializer.serializeValue(mirror)); | |
27 var refs = new MirrorRefCache( | |
28 JSON.stringify(serializer.serializeReferencedObjects())); | |
29 | |
30 // Check the mirror hierachy. | |
31 assertTrue(mirror instanceof debug.Mirror); | |
32 assertTrue(mirror instanceof debug.ValueMirror); | |
33 assertTrue(mirror instanceof debug.ObjectMirror); | |
34 assertTrue(mirror instanceof debug.PromiseMirror); | |
35 | |
36 // Check the mirror properties. | |
37 assertEquals(status, mirror.status()); | |
38 assertTrue(mirror.isPromise()); | |
39 assertEquals('promise', mirror.type()); | |
40 assertFalse(mirror.isPrimitive()); | |
41 assertEquals("Object", mirror.className()); | |
42 assertEquals("#<Promise>", mirror.toText()); | |
43 assertSame(promise, mirror.value()); | |
44 assertTrue(mirror.promiseValue() instanceof debug.Mirror); | |
45 assertEquals(value, mirror.promiseValue().value()); | |
46 | |
47 // Parse JSON representation and check. | |
48 var fromJSON = eval('(' + json + ')'); | |
49 assertEquals('promise', fromJSON.type); | |
50 assertEquals('Object', fromJSON.className); | |
51 assertEquals('function', refs.lookup(fromJSON.constructorFunction.ref).type); | |
52 assertEquals('Promise', refs.lookup(fromJSON.constructorFunction.ref).name); | |
53 assertEquals(status, fromJSON.status); | |
54 assertEquals(value, refs.lookup(fromJSON.promiseValue.ref).value); | |
55 } | |
56 | |
57 // Test a number of different promises. | |
58 var resolved = (async function() {})(); | |
59 var rejected = (async function() { throw undefined; })(); | |
60 var pending = (async function() { await 1; })(); | |
61 | |
62 testPromiseMirror(resolved, "resolved", undefined); | |
63 testPromiseMirror(rejected, "rejected", undefined); | |
64 testPromiseMirror(pending, "pending", undefined); | |
65 | |
66 var resolvedv = (async function() { return "resolve"; })(); | |
67 var rejectedv = (async function() { return Promise.reject("reject"); })(); | |
68 var thrownv = (async function() { throw "throw"; })(); | |
69 | |
70 testPromiseMirror(resolvedv, "resolved", 'resolve'); | |
71 testPromiseMirror(rejectedv, "rejected", 'reject'); | |
72 testPromiseMirror(thrownv, "rejected", 'throw'); | |
73 | |
74 // Test internal properties of different promises. | |
75 var m1 = debug.MakeMirror((async function() { return 1; })()); | |
76 var ip = m1.internalProperties(); | |
77 assertEquals(2, ip.length); | |
78 assertEquals("[[PromiseStatus]]", ip[0].name()); | |
79 assertEquals("[[PromiseValue]]", ip[1].name()); | |
80 assertEquals("resolved", ip[0].value().value()); | |
81 assertEquals(1, ip[1].value().value()); | |
82 | |
83 var m2 = debug.MakeMirror((async function() { throw 2; })()); | |
84 ip = m2.internalProperties(); | |
85 assertEquals("rejected", ip[0].value().value()); | |
86 assertEquals(2, ip[1].value().value()); | |
87 | |
88 var m3 = debug.MakeMirror((async function() { await 1; })()); | |
89 ip = m3.internalProperties(); | |
90 assertEquals("pending", ip[0].value().value()); | |
91 assertEquals("undefined", typeof(ip[1].value().value())); | |
92 | |
93 %RunMicrotasks(); | |
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