src/dstr-assignment-for-await/array-rest-yield-expr.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: >
    When a `yield` token appears within the DestructuringAssignmentTarget of
    an AssignmentRestElement and within the body of a generator function, it
    should behave as a YieldExpression.
template: async-generator
features: [generators]
---*/

//- setup
let x = {};

//- elems
[...x[yield]]
//- vals
[33, 44, 55]
//- teardown
iter.next().then(iterationResult => {
  assert.sameValue(iterationResult.value, undefined);
  assert.sameValue(iterationResult.done, false);
  assert.sameValue(x.prop, undefined);

  iter.next('prop').then(iterationResult => {
    assert.sameValue(iterationResult.value, undefined);
    assert.sameValue(iterationResult.done, true);
    assert.sameValue(x.prop.length, 3);
    assert.sameValue(x.prop[0], 33);
    assert.sameValue(x.prop[1], 44);
    assert.sameValue(x.prop[2], 55);
    assert.sameValue(iterCount, 1);
  }).then($DONE, $DONE);
});