test262/test/language/statements/for-of/dstr-const-obj-ptrn-rest-ob...

64 lines
2.0 KiB
JavaScript

// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-rest-obj-nested-rest.case
// - src/dstr-binding/default/for-of-const.template
/*---
description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment and object rest desconstruction is allowed in that case. (for-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
es6id: 13.7.5.11
features: [destructuring-binding]
flags: [generated]
includes: [propertyHelper.js]
info: |
IterationStatement :
for ( ForDeclaration of AssignmentExpression ) Statement
[...]
3. Return ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
lexicalBinding, 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
[...]
iii. Else,
1. Assert: lhsKind is lexicalBinding.
2. Assert: lhs is a ForDeclaration.
3. Let status be the result of performing BindingInitialization
for lhs passing nextValue and iterationEnv as arguments.
[...]
---*/
var iterCount = 0;
for (const {a, b, ...{c, ...rest}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
assert.sameValue(a, 1);
assert.sameValue(b, 2);
assert.sameValue(c, 3);
assert.sameValue(rest.d, 4);
assert.sameValue(rest.e, 5);
verifyEnumerable(rest, "d");
verifyWritable(rest, "d");
verifyConfigurable(rest, "d");
verifyEnumerable(rest, "e");
verifyWritable(rest, "e");
verifyConfigurable(rest, "e");
iterCount += 1;
}
assert.sameValue(iterCount, 1, 'iteration occurred as expected');