test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-val-obj.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-rest-val-obj.case
// - src/dstr-binding/default/for-await-of-var.template
/*---
description: Rest object contains just unextracted data (for-await-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [object-rest, destructuring-binding, async-iteration]
flags: [generated, async]
includes: [propertyHelper.js]
info: |
    IterationStatement :
        for await ( var ForBinding of AssignmentExpression ) Statement

    [...]
    2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
        varBinding, labelSet, async).

    13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation

    [...]
    3. Let destructuring be IsDestructuring of lhs.
    [...]
    5. Repeat
       [...]
       h. If destructuring is false, then
          [...]
       i. Else
          i. If lhsKind is assignment, then
             [...]
          ii. Else if lhsKind is varBinding, then
              1. Assert: lhs is a ForBinding.
              2. Let status be the result of performing BindingInitialization
                 for lhs passing nextValue and undefined as the arguments.
          [...]
---*/

var iterCount = 0;

async function fn() {
  for await (var {a, b, ...rest} of [{x: 1, y: 2, a: 5, b: 3}]) {
    assert.sameValue(rest.x, 1);
    assert.sameValue(rest.y, 2);
    assert.sameValue(rest.a, undefined);
    assert.sameValue(rest.b, undefined);

    verifyEnumerable(rest, "x");
    verifyWritable(rest, "x");
    verifyConfigurable(rest, "x");

    verifyEnumerable(rest, "y");
    verifyWritable(rest, "y");
    verifyConfigurable(rest, "y");


    iterCount += 1;
  }
}

fn()
  .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
  .then($DONE, $DONE);