mirror of https://github.com/tc39/test262.git
68 lines
2.1 KiB
JavaScript
68 lines
2.1 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/obj-ptrn-rest-obj-nested-rest.case
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// - src/dstr-binding/default/for-await-of-async-gen-let.template
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/*---
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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-await-of statement)
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esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
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features: [object-rest, destructuring-binding, async-iteration]
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flags: [generated, async]
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includes: [propertyHelper.js]
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info: |
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IterationStatement :
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for await ( ForDeclaration of AssignmentExpression ) Statement
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[...]
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2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
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lexicalBinding, labelSet, async).
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13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
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[...]
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4. Let destructuring be IsDestructuring of lhs.
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[...]
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6. Repeat
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[...]
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j. If destructuring is false, then
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[...]
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k. Else
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i. If lhsKind is assignment, then
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[...]
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ii. Else if lhsKind is varBinding, then
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[...]
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iii. Else,
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1. Assert: lhsKind is lexicalBinding.
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2. Assert: lhs is a ForDeclaration.
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3. Let status be the result of performing BindingInitialization
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for lhs passing nextValue and iterationEnv as arguments.
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[...]
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---*/
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var iterCount = 0;
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async function *fn() {
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for await (let {a, b, ...{c, ...rest}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
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assert.sameValue(a, 1);
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assert.sameValue(b, 2);
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assert.sameValue(c, 3);
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assert.sameValue(rest.d, 4);
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assert.sameValue(rest.e, 5);
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verifyEnumerable(rest, "d");
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verifyWritable(rest, "d");
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verifyConfigurable(rest, "d");
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verifyEnumerable(rest, "e");
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verifyWritable(rest, "e");
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verifyConfigurable(rest, "e");
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iterCount += 1;
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}
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}
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fn().next()
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.then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
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.then($DONE, $DONE);
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