diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/async-generator/dstr/ary-init-iter-no-close.js')
-rw-r--r-- | js/src/tests/test262/language/statements/async-generator/dstr/ary-init-iter-no-close.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/async-generator/dstr/ary-init-iter-no-close.js b/js/src/tests/test262/language/statements/async-generator/dstr/ary-init-iter-no-close.js new file mode 100644 index 0000000000..f42a6ef574 --- /dev/null +++ b/js/src/tests/test262/language/statements/async-generator/dstr/ary-init-iter-no-close.js @@ -0,0 +1,52 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-init-iter-no-close.case +// - src/dstr-binding/default/async-gen-func-decl.template +/*--- +description: Iterator is not closed when exhausted by pattern evaluation (async generator function declaration) +esid: sec-asyncgenerator-definitions-instantiatefunctionobject +features: [Symbol.iterator, async-iteration] +flags: [generated, async] +info: | + AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier + ( FormalParameters ) { AsyncGeneratorBody } + + [...] + 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, + scope, strict). + [...] + + + 13.3.3.5 Runtime Semantics: BindingInitialization + + BindingPattern : ArrayBindingPattern + + [...] + 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator, + result). + [...] + +---*/ +var doneCallCount = 0; +var iter = {}; +iter[Symbol.iterator] = function() { + return { + next: function() { + return { value: null, done: true }; + }, + return: function() { + doneCallCount += 1; + return {}; + } + }; +}; + + +var callCount = 0; +async function* f([x]) { + assert.sameValue(doneCallCount, 0); + callCount = callCount + 1; +}; +f(iter).next().then(() => { + assert.sameValue(callCount, 1, 'invoked exactly once'); +}).then($DONE, $DONE); |