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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
8function 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
16MirrorRefCache.prototype.lookup = function(handle) {
17  return this.refs_[handle];
18}
19
20function 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.
56var resolved = new Promise(function(resolve, reject) { resolve() });
57var rejected = new Promise(function(resolve, reject) { reject() });
58var pending = new Promise(function(resolve, reject) {});
59
60testPromiseMirror(resolved, "resolved", undefined);
61testPromiseMirror(rejected, "rejected", undefined);
62testPromiseMirror(pending, "pending", undefined);
63
64var resolvedv = new Promise(function(resolve, reject) { resolve('resolve') });
65var rejectedv = new Promise(function(resolve, reject) { reject('reject') });
66var thrownv = new Promise(function(resolve, reject) { throw 'throw' });
67
68testPromiseMirror(resolvedv, "resolved", 'resolve');
69testPromiseMirror(rejectedv, "rejected", 'reject');
70testPromiseMirror(thrownv, "rejected", 'throw');
71
72// Test internal properties of different promises.
73var m1 = debug.MakeMirror(new Promise(
74    function(resolve, reject) { resolve(1) }));
75var ip = m1.internalProperties();
76assertEquals(2, ip.length);
77assertEquals("[[PromiseStatus]]", ip[0].name());
78assertEquals("[[PromiseValue]]", ip[1].name());
79assertEquals("resolved", ip[0].value().value());
80assertEquals(1, ip[1].value().value());
81
82var m2 = debug.MakeMirror(new Promise(function(resolve, reject) { reject(2) }));
83ip = m2.internalProperties();
84assertEquals("rejected", ip[0].value().value());
85assertEquals(2, ip[1].value().value());
86
87var m3 = debug.MakeMirror(new Promise(function(resolve, reject) { }));
88ip = m3.internalProperties();
89assertEquals("pending", ip[0].value().value());
90assertEquals("undefined", typeof(ip[1].value().value()));
91