1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
load('test/mjsunit/test-async.js');
// .return() from state suspendedStart with undefined
testAsync(test => {
test.plan(3);
async function* gen() {
test.unreachable();
}
let didResolvePromise = false;
let g = gen();
g.return(undefined).then(
(iterResult) => {
test.equals(true, didResolvePromise);
test.equals({ value: undefined, done: true }, iterResult);
},
test.unexpectedRejection());
g.next().then(
(iterResult) => {
test.equals({ value: undefined, done: true }, iterResult);
},
test.unexpectedRejection());
// Race: generator request's promise should resolve after this Promise.
Promise.resolve("already-resolved").then(
_ => { didResolvePromise = true },
test.unexpectedRejection());
}, "AsyncGenerator.return(undefined) / suspendStart");
// .return() from state suspendedStart with thenable
testAsync(test => {
test.plan(3);
async function* gen() {
test.unreachable();
}
let didResolvePromise = false;
let g = gen();
let resolve;
let awaitedThenable = { then(resolveFn) { resolve = resolveFn; } };
g.return(awaitedThenable).then(
(iterResult) => {
test.equals(true, didResolvePromise);
test.equals({ value: "resolvedPromise", done: true }, iterResult);
},
test.unexpectedRejection());
g.next().then(
(iterResult) => {
test.equals({ value: undefined, done: true }, iterResult);
},
test.unexpectedRejection());
test.drainMicrotasks();
resolve("resolvedPromise");
// Race: generator request's promise should resolve after this Promise.
Promise.resolve("already-resolved").then(
_ => { didResolvePromise = true },
test.unexpectedRejection());
}, "AsyncGenerator.return(thenable) / suspendStart");
// .return() from state suspendedYield with undefined
testAsync(test => {
test.plan(4);
async function* gen() {
yield;
test.unreachable();
}
let didResolvePromise = false;
let g = gen();
g.next().then(
(iterResult) => {
test.equals({ value: undefined, done: false }, iterResult);
},
test.unexpectedRejection());
g.return(undefined).then(
(iterResult) => {
test.equals(true, didResolvePromise);
test.equals({ value: undefined, done: true }, iterResult);
},
test.unexpectedRejection());
g.next().then(
(iterResult) => {
test.equals({ value: undefined, done: true }, iterResult);
},
test.unexpectedRejection());
// Race: generator request's promise should resolve after this Promise.
Promise.resolve("already-resolved").then(
_ => { didResolvePromise = true },
test.unexpectedRejection());
}, "AsyncGenerator.return(undefined) / suspendedYield");
// .return() from state suspendedYield with thenable
testAsync(test => {
test.plan(4);
async function* gen() {
yield;
test.unreachable();
}
let didResolvePromise = false;
let g = gen();
let resolve;
let awaitedThenable = { then(resolveFn) { resolve = resolveFn; } };
g.next().then(
(iterResult) => {
test.equals({ value: undefined, done: false }, iterResult);
},
test.unexpectedRejection());
g.return(awaitedThenable).then(
(iterResult) => {
test.equals(true, didResolvePromise);
test.equals({ value: "resolvedPromise", done: true }, iterResult);
},
test.unexpectedRejection());
g.next().then(
(iterResult) => {
test.equals({ value: undefined, done: true }, iterResult);
},
test.unexpectedRejection());
test.drainMicrotasks();
resolve("resolvedPromise");
// Race: generator request's promise should resolve after this Promise.
Promise.resolve("already-resolved").then(
_ => { didResolvePromise = true },
test.unexpectedRejection());
}, "AsyncGenerator.return(thenable) / suspendYield");
|
