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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elision-exhausted.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elision-exhausted.js b/js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elision-exhausted.js new file mode 100644 index 0000000000..36ee1dd508 --- /dev/null +++ b/js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elision-exhausted.js @@ -0,0 +1,48 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-elision-exhausted.case +// - src/dstr-binding/default/async-gen-func-decl-dflt.template +/*--- +description: Elision accepts exhausted iterator (async generator function declaration (default parameter)) +esid: sec-asyncgenerator-definitions-instantiatefunctionobject +features: [generators, 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). + [...] + + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + + ArrayBindingPattern : [ Elision ] + + 1. Return the result of performing + IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord + as the argument. + + 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation + + Elision : , + + 1. If iteratorRecord.[[done]] is false, then + [...] + 2. Return NormalCompletion(empty). + +---*/ +var iter = function*() {}(); +iter.next(); + + +var callCount = 0; +async function* f([,] = iter) { + + callCount = callCount + 1; +}; +f().next().then(() => { + assert.sameValue(callCount, 1, 'invoked exactly once'); +}).then($DONE, $DONE); |