text: // This file was procedurally generated from the following sources:
  // - src/async-generators/yield-star-getiter-sync-returns-undefined-throw.case
  // - src/async-generators/default/async-expression-named.template
  /*---
  description: Non object returned by [Symbol.iterator]() - undefined (Named async generator expression)
  esid: prod-AsyncGeneratorExpression
  features: [Symbol.iterator, async-iteration]
  flags: [generated, async]
  info: |
      Async Generator Function Definitions
  
      AsyncGeneratorExpression :
        async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
          AsyncGeneratorBody }
  
  
      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).
          iii. Return ? CreateAsyncFromSyncIterator(syncIterator).
      ...
  
      CreateAsyncFromSyncIterator(syncIterator)
  
      1. If Type(syncIterator) is not Object, throw a TypeError exception.
      ...
  
  ---*/
  var obj = {
    [Symbol.iterator]() {
      return undefined;
    }
  };
  
  
  
  var callCount = 0;
  
  var gen = async function *g() {
    callCount += 1;
    yield* obj;
      throw new Test262Error('abrupt completion closes iter');
  
  };
  
  var iter = gen();
  
  iter.next().then(() => {
    throw new Test262Error('Promise incorrectly fulfilled.');
  }, v => {
    assert.sameValue(v.constructor, TypeError, "TypeError");
  
    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);
  
  assert.sameValue(callCount, 1);
  