JSTests/test262/test/language/statements/for-of/dstr/var-ary-ptrn-elem-id-init-fn-name-gen.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-gen.case
// - src/dstr-binding/default/for-of-var.template
/*---
description: SingleNameBinding assigns name to "anonymous" generator functions (for-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [generators, 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
       a. Let defaultValue be the result of evaluating Initializer.
       b. Let v be GetValue(defaultValue).
       c. ReturnIfAbrupt(v).
       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
          [...]
    7. If environment is undefined, return PutValue(lhs, v).
    8. Return InitializeReferencedBinding(lhs, v).

---*/

var iterCount = 0;

for (var [gen = function* () {}, xGen = function* x() {}] of [[]]) {
  assert.sameValue(gen.name, 'gen');
  assert.notSameValue(xGen.name, 'xGen');

  iterCount += 1;
}

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