js/src/tests/test262/language/statements/async-generator/yield-promise-reject-next-yield-star-sync-iterator.js


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

// |reftest| async
// This file was procedurally generated from the following sources:
// - src/async-generators/yield-promise-reject-next-yield-star-sync-iterator.case
// - src/async-generators/default/async-declaration.template
/*---
description: yield * (async iterator) is treated as throw value (Async generator Function declaration)
esid: prod-AsyncGeneratorDeclaration
features: [async-iteration]
flags: [generated, async]
info: |
    Async Generator Function Definitions

    AsyncGeneratorDeclaration:
      async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
        AsyncGeneratorBody }

---*/
let error = new Error();
let iterable = [
  Promise.reject(error),
  "unreachable"
];


var callCount = 0;

async function *gen() {
  callCount += 1;
  yield * iterable;
}

var iter = gen();

iter.next().then(() => {
  throw new Test262Error("Promise incorrectly resolved.");
}, rejectValue => {
  // yield Promise.reject(error);
  assert.sameValue(rejectValue, error);

  iter.next().then(({done, value}) => {
    // iter is closed now.
    assert.sameValue(done, true, "The value of IteratorResult.done is `true`");
    assert.sameValue(value, undefined, "The value of IteratorResult.value is `undefined`");
  }).then($DONE, $DONE);
}).catch($DONE);

assert.sameValue(callCount, 1);