diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for-await-of/async-func-dstr-const-async-obj-ptrn-empty.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-await-of/async-func-dstr-const-async-obj-ptrn-empty.js | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-await-of/async-func-dstr-const-async-obj-ptrn-empty.js b/js/src/tests/test262/language/statements/for-await-of/async-func-dstr-const-async-obj-ptrn-empty.js new file mode 100644 index 0000000000..7ad1910a90 --- /dev/null +++ b/js/src/tests/test262/language/statements/for-await-of/async-func-dstr-const-async-obj-ptrn-empty.js @@ -0,0 +1,67 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/dstr-binding-for-await/obj-ptrn-empty.case +// - src/dstr-binding-for-await/default/for-await-of-async-func-const-async.template +/*--- +description: No property access occurs for an "empty" object binding pattern (for-await-of statement) +esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation +features: [destructuring-binding, async-iteration] +flags: [generated, async] +info: | + IterationStatement : + for await ( ForDeclaration of AssignmentExpression ) Statement + + [...] + 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, + lexicalBinding, labelSet, async). + + 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation + + [...] + 4. Let destructuring be IsDestructuring of lhs. + [...] + 6. Repeat + [...] + j. If destructuring is false, then + [...] + k. 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. + [...] + + Runtime Semantics: BindingInitialization + + ObjectBindingPattern : { } + + 1. Return NormalCompletion(empty). +---*/ +var accessCount = 0; +var obj = Object.defineProperty({}, 'attr', { + get: function() { + accessCount += 1; + } +}); + +var iterCount = 0; +var asyncIter = (async function*() { + yield* [obj]; +})(); + +async function fn() { + for await (const {} of asyncIter) { + assert.sameValue(accessCount, 0); + + iterCount += 1; + } +} + +fn() + .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) + .then($DONE, $DONE); |