src/async-generators/yield-promise-reject-next-yield-star-async-iterator.case

// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
desc: yield * (async iterator) is treated as throw value
template: default
flags: [async]
---*/

//- setup
let error = new Error();
async function * readFile() {
  yield Promise.reject(error);
  yield "unreachable";
}
//- body
yield * readFile();

//- assertions
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);
}, $DONE).catch($DONE);