test262/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-init-ary.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding-for-await/ary-ptrn-rest-init-ary.case
// - src/dstr-binding-for-await/default/for-await-of-async-func-var.template
/*---
description: Rest element (nested array pattern) does not support initializer (for-await-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [destructuring-binding, async-iteration]
flags: [generated]
negative:
  phase: parse
  type: SyntaxError
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

    [...]
    4. Let destructuring be IsDestructuring of lhs.
    [...]
    6. Repeat
       [...]
       j. If destructuring is false, then
          [...]
       k. 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.
          [...]

    13.3.3 Destructuring Binding Patterns
    ArrayBindingPattern[Yield] :
        [ Elisionopt BindingRestElement[?Yield]opt ]
        [ BindingElementList[?Yield] ]
        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
---*/
$DONOTEVALUATE();

var iterCount = 0;

async function fn() {
  for await (var [...[ x ] = []] of [[]]) {
    

    iterCount += 1;
  }
}

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