JSTests/test262/test/language/statements/for-of/dstr/obj-id-init-fn-name-gen.js

// This file was procedurally generated from the following sources:
// - src/dstr-assignment/obj-id-init-fn-name-gen.case
// - src/dstr-assignment/default/for-of.template
/*---
description: Assignment of function `name` attribute (GeneratorExpression) (For..of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
es6id: 13.7.5.11
features: [generators, destructuring-binding]
flags: [generated]
includes: [propertyHelper.js]
info: |
    IterationStatement :
      for ( LeftHandSideExpression of AssignmentExpression ) Statement

    1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« »,
       AssignmentExpression, iterate).
    2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement,
       keyResult, assignment, labelSet).

    13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation

    [...]
    4. If destructuring is true and if lhsKind is assignment, then
       a. Assert: lhs is a LeftHandSideExpression.
       b. Let assignmentPattern be the parse of the source text corresponding to
          lhs using AssignmentPattern as the goal symbol.
    [...]

    AssignmentProperty : IdentifierReference Initializeropt
    [...] 6. If Initializeropt is present and v is undefined, then
       [...]
       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
          i. Let hasNameProperty be HasOwnProperty(v, "name").
          ii. ReturnIfAbrupt(hasNameProperty).
          iii. If hasNameProperty is false, perform SetFunctionName(v, P).

---*/
var xGen, gen;

var counter = 0;

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

  verifyProperty(gen, 'name', {
    enumerable: false,
    writable: false,
    configurable: true,
    value: 'gen'
  });
  counter += 1;
}

assert.sameValue(counter, 1);