yield-star-getiter-sync-returns-abrupt.case

// Copyright 2017 Tooru Fujisawa. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
template: default
desc: Abrupt completion while calling [Symbol.iterator]
info: |
    YieldExpression: yield * AssignmentExpression

    1. Let exprRef be the result of evaluating AssignmentExpression.
    2. Let value be ? GetValue(exprRef).
    3. Let generatorKind be ! GetGeneratorKind().
    4. Let iterator be ? GetIterator(value, generatorKind).
    ...

    GetIterator ( obj [ , hint ] )

    ...
    3. If hint is async,
      a. Set method to ? GetMethod(obj, @@asyncIterator).
        i. Let syncMethod be ? GetMethod(obj, @@iterator).
        ii. Let syncIterator be ? Call(syncMethod, obj).
    ...

features: [Symbol.iterator, Symbol.asyncIterator]
flags: [async]
---*/

//- setup
var reason = {};
var obj = {
  [Symbol.iterator]() {
    throw reason;
  }
};

//- body
  yield* obj;
  throw new Test262Error('abrupt completion closes iter');

//- assertions
iter.next().then(() => {
  throw new Test262Error('Promise incorrectly fulfilled.');
}, v => {
  assert.sameValue(v, reason, "reject reason");

  iter.next().then(({ done, value }) => {
    assert.sameValue(done, true, 'the iterator is completed');
    assert.sameValue(value, undefined, 'value is undefined');
  }).then($DONE, $DONE);
}).catch($DONE);