async-gen-meth-params-trailing-comma-multiple.js (1622B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/function-forms/params-trailing-comma-multiple.case 4 // - src/function-forms/default/async-gen-meth.template 5 /*--- 6 description: A trailing comma should not increase the respective length, using multiple parameters (async generator method) 7 esid: sec-asyncgenerator-definitions-propertydefinitionevaluation 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 AsyncGeneratorMethod : 12 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) 13 { AsyncGeneratorBody } 14 15 1. Let propKey be the result of evaluating PropertyName. 16 2. ReturnIfAbrupt(propKey). 17 3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true. 18 Otherwise let strict be false. 19 4. Let scope be the running execution context's LexicalEnvironment. 20 5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters, 21 AsyncGeneratorBody, scope, strict). 22 [...] 23 24 25 Trailing comma in the parameters list 26 27 14.1 Function Definitions 28 29 FormalParameters[Yield, Await] : FormalParameterList[?Yield, ?Await] , 30 ---*/ 31 32 var callCount = 0; 33 var obj = { 34 async *method(a, b,) { 35 assert.sameValue(a, 42); 36 assert.sameValue(b, 39); 37 callCount = callCount + 1; 38 } 39 }; 40 41 // Stores a reference `ref` for case evaluation 42 var ref = obj.method; 43 44 ref(42, 39, 1).next().then(() => { 45 assert.sameValue(callCount, 1, 'generator method invoked exactly once'); 46 }).then($DONE, $DONE); 47 48 assert.sameValue(ref.length, 2, 'length is properly set');