dflt-params-arg-val-undefined.js (2552B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/function-forms/dflt-params-arg-val-undefined.case 4 // - src/function-forms/default/cls-decl-async-gen-meth-static.template 5 /*--- 6 description: Use of initializer when argument value is `undefined` (static class declaration async generator method) 7 esid: sec-runtime-semantics-bindingclassdeclarationevaluation 8 features: [default-parameters, async-iteration] 9 flags: [generated, async] 10 info: | 11 ClassDeclaration : class BindingIdentifier ClassTail 12 13 1. Let className be StringValue of BindingIdentifier. 14 2. Let value be the result of ClassDefinitionEvaluation of ClassTail with 15 argument className. 16 [...] 17 18 14.5.14 Runtime Semantics: ClassDefinitionEvaluation 19 20 21. For each ClassElement m in order from methods 21 a. If IsStatic of m is false, then 22 b. Else, 23 Let status be the result of performing PropertyDefinitionEvaluation for 24 m with arguments F and false. 25 [...] 26 27 Runtime Semantics: PropertyDefinitionEvaluation 28 29 AsyncGeneratorMethod : 30 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) 31 { AsyncGeneratorBody } 32 33 1. Let propKey be the result of evaluating PropertyName. 34 2. ReturnIfAbrupt(propKey). 35 3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true. 36 Otherwise let strict be false. 37 4. Let scope be the running execution context's LexicalEnvironment. 38 5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters, 39 AsyncGeneratorBody, scope, strict). 40 [...] 41 42 43 14.1.19 Runtime Semantics: IteratorBindingInitialization 44 45 FormalsList : FormalsList , FormalParameter 46 47 [...] 48 23. Let iteratorRecord be Record {[[Iterator]]: 49 CreateListIterator(argumentsList), [[Done]]: false}. 50 24. If hasDuplicates is true, then 51 [...] 52 25. Else, 53 a. Perform ? IteratorBindingInitialization for formals with 54 iteratorRecord and env as arguments. 55 [...] 56 57 ---*/ 58 59 60 var callCount = 0; 61 class C { 62 static async *method(fromLiteral = 23, fromExpr = 45, fromHole = 99) { 63 assert.sameValue(fromLiteral, 23); 64 assert.sameValue(fromExpr, 45); 65 assert.sameValue(fromHole, 99); 66 callCount = callCount + 1; 67 } 68 } 69 70 // Stores a reference `ref` for case evaluation 71 var ref = C.method; 72 73 ref(undefined, void 0).next().then(() => { 74 assert.sameValue(callCount, 1, 'method invoked exactly once'); 75 }).then($DONE, $DONE);