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

46 lines
1.4 KiB
JavaScript

// This file was procedurally generated from the following sources:
// - src/dstr-assignment/obj-rest-getter.case
// - src/dstr-assignment/default/for-of.template
/*---
description: Getter is called when obj is being deconstructed to a rest Object (For..of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
es6id: 13.7.5.11
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 x;
var count = 0;
var counter = 0;
for ({...x} of [{ get v() { count++; return 2; } }]) {
assert.sameValue(x.v, 2);
assert.sameValue(count, 1);
verifyEnumerable(x, "v");
verifyWritable(x, "v");
verifyConfigurable(x, "v");
counter += 1;
}
assert.sameValue(counter, 1);