// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-elem-id-init-skipped.case
// - src/dstr-binding/default/for-of-var.template
/*---
description: Destructuring initializer is not evaluated when value is not `undefined` (for-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
es6id: 13.7.5.11
features: [destructuring-binding]
flags: [generated]
info: |
    IterationStatement :
        for ( var ForBinding of AssignmentExpression ) Statement

    [...]
    3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
       varBinding, labelSet).

    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.
          [...]

    13.3.3.6 Runtime Semantics: IteratorBindingInitialization

    SingleNameBinding : BindingIdentifier Initializeropt

    [...]
    6. If Initializer is present and v is undefined, then
       [...]
    7. If environment is undefined, return PutValue(lhs, v).
    8. Return InitializeReferencedBinding(lhs, v).
---*/
var initCount = 0;
function counter() {
  initCount += 1;
}

var iterCount = 0;

for (var [w = counter(), x = counter(), y = counter(), z = counter()] of [[null, 0, false, '']]) {
  assert.sameValue(w, null);
  assert.sameValue(x, 0);
  assert.sameValue(y, false);
  assert.sameValue(z, '');
  assert.sameValue(initCount, 0);

  iterCount += 1;
}

assert.sameValue(iterCount, 1, 'Iteration occurred as expected');
