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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/arguments-object/async-gen-named-func-expr-args-trailing-comma-undefined.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/arguments-object/async-gen-named-func-expr-args-trailing-comma-undefined.js b/js/src/tests/test262/language/arguments-object/async-gen-named-func-expr-args-trailing-comma-undefined.js new file mode 100644 index 0000000000..0eaa11cb5a --- /dev/null +++ b/js/src/tests/test262/language/arguments-object/async-gen-named-func-expr-args-trailing-comma-undefined.js @@ -0,0 +1,49 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/arguments/args-trailing-comma-undefined.case +// - src/arguments/default/async-gen-named-func-expr.template +/*--- +description: A trailing comma after undefined should not increase the arguments.length (async generator named function expression) +esid: sec-asyncgenerator-definitions-evaluation +features: [async-iteration] +flags: [generated, async] +info: | + AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier + ( FormalParameters ) { AsyncGeneratorBody } + + [...] + 7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, + AsyncGeneratorBody, funcEnv, strict). + [...] + + + Trailing comma in the arguments list + + Left-Hand-Side Expressions + + Arguments : + ( ) + ( ArgumentList ) + ( ArgumentList , ) + + ArgumentList : + AssignmentExpression + ... AssignmentExpression + ArgumentList , AssignmentExpression + ArgumentList , ... AssignmentExpression +---*/ + + +var callCount = 0; +// Stores a reference `ref` for case evaluation +var ref; +ref = async function* g() { + assert.sameValue(arguments.length, 2); + assert.sameValue(arguments[0], 42); + assert.sameValue(arguments[1], undefined); + callCount = callCount + 1; +}; + +ref(42, undefined,).next().then(() => { + assert.sameValue(callCount, 1, 'generator function invoked exactly once'); +}).then($DONE, $DONE); |