JSTests/test262/test/language/statements/for-of/dstr/obj-rest-descriptors.js

// This file was procedurally generated from the following sources:
// - src/dstr-assignment/obj-rest-descriptors.case
// - src/dstr-assignment/default/for-of.template
/*---
description: Object created from rest deconstruction doesn't copy source object property descriptors. (For..of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [object-rest, 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.
    [...]
---*/
var rest;
var obj = {};
Object.defineProperty(obj, "a", { value: 3, configurable: false, enumerable: true });
Object.defineProperty(obj, "b", { value: 4, writable: false, enumerable: true });

var counter = 0;

for ({...rest} of [obj]) {
  verifyProperty(rest, "a", {
    enumerable: true,
    writable: true,
    configurable: true,
    value: 3
  });

  verifyProperty(rest, "b", {
    enumerable: true,
    writable: true,
    configurable: true,
    value: 4
  });

  counter += 1;
}

assert.sameValue(counter, 1);