params-trailing-comma-single.js (1772B)
1 // This file was procedurally generated from the following sources: 2 // - src/function-forms/params-trailing-comma-single.case 3 // - src/function-forms/default/func-decl.template 4 /*--- 5 description: A trailing comma should not increase the respective length, using a single parameter (function declaration) 6 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject 7 flags: [generated] 8 info: | 9 FunctionDeclaration : 10 function BindingIdentifier ( FormalParameters ) { FunctionBody } 11 12 [...] 13 3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody, 14 scope, strict). 15 [...] 16 17 9.2.1 [[Call]] ( thisArgument, argumentsList) 18 19 [...] 20 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 21 [...] 22 23 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 24 25 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 26 [...] 27 28 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 29 30 [...] 31 23. Let iteratorRecord be Record {[[iterator]]: 32 CreateListIterator(argumentsList), [[done]]: false}. 33 24. If hasDuplicates is true, then 34 [...] 35 25. Else, 36 b. Let formalStatus be IteratorBindingInitialization for formals with 37 iteratorRecord and env as arguments. 38 [...] 39 40 Trailing comma in the parameters list 41 42 14.1 Function Definitions 43 44 FormalParameters[Yield, Await] : FormalParameterList[?Yield, ?Await] , 45 ---*/ 46 47 var callCount = 0; 48 // Stores a reference `ref` for case evaluation 49 function ref(a,) { 50 assert.sameValue(a, 42); 51 callCount = callCount + 1; 52 } 53 54 ref(42, 39); 55 56 assert.sameValue(callCount, 1, 'function invoked exactly once'); 57 58 assert.sameValue(ref.length, 1, 'length is properly set'); 59 60 reportCompare(0, 0);