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Diffstat (limited to 'js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-nrml-close-null.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-nrml-close-null.js | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-nrml-close-null.js b/js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-nrml-close-null.js new file mode 100644 index 0000000000..72040af2d8 --- /dev/null +++ b/js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-nrml-close-null.js @@ -0,0 +1,76 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/dstr-assignment-for-await/array-elem-iter-nrml-close-null.case +// - src/dstr-assignment-for-await/async-generator/async-gen-decl.template +/*--- +description: IteratorClose throws a TypeError when `return` returns a non-Object value (for-await-of statement in an async generator declaration) +esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation +features: [Symbol.iterator, destructuring-binding, async-iteration] +flags: [generated, async] +info: | + IterationStatement : + for await ( 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 + + [...] + 5. 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. + [...] + + ArrayAssignmentPattern : [ AssignmentElementList ] + + [...] + 4. If iteratorRecord.[[Done]] is false, return ? IteratorClose(iterator, result). + 5. Return result. + + 7.4.6 IteratorClose( iterator, completion ) + + [...] + 5. Let innerResult be Call(return, iterator, « »). + 6. If completion.[[Type]] is throw, return Completion(completion). + 7. If innerResult.[[Type]] is throw, return Completion(innerResult). + 8. If Type(innerResult.[[Value]]) is not Object, throw a TypeError exception. + +---*/ +let _; +let nextCount = 0; +let iterator = { + next() { + nextCount += 1; + // Set an upper-bound to limit unnecessary iteration in non-conformant + // implementations + return { done: nextCount > 10 }; + }, + return() { + return null; + } +}; +let iterable = { + [Symbol.iterator]() { + return iterator; + } +}; + +let iterCount = 0; +async function * fn() { + for await ([ _ ] of [iterable]) { + + iterCount += 1; + } +} + +let iter = fn(); + +iter.next().then(() => $DONE('Promise incorrectly fulfilled.'), ({ constructor }) => { + assert.sameValue(nextCount, 1); + assert.sameValue(constructor, TypeError); +}).then($DONE, $DONE); + |