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Diffstat (limited to 'js/src/tests/test262/language/statements/generators/dflt-params-arg-val-not-undefined.js')
-rw-r--r-- | js/src/tests/test262/language/statements/generators/dflt-params-arg-val-not-undefined.js | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/generators/dflt-params-arg-val-not-undefined.js b/js/src/tests/test262/language/statements/generators/dflt-params-arg-val-not-undefined.js new file mode 100644 index 0000000000..d9b8460c22 --- /dev/null +++ b/js/src/tests/test262/language/statements/generators/dflt-params-arg-val-not-undefined.js @@ -0,0 +1,87 @@ +// This file was procedurally generated from the following sources: +// - src/function-forms/dflt-params-arg-val-not-undefined.case +// - src/function-forms/default/gen-func-decl.template +/*--- +description: Use of initializer when argument value is not `undefined` (generator function declaration) +esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject +features: [default-parameters, generators] +flags: [generated] +info: | + GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody } + + [...] + 2. Let F be GeneratorFunctionCreate(Normal, FormalParameters, + GeneratorBody, scope, strict). + [...] + + 9.2.1 [[Call]] ( thisArgument, argumentsList) + + [...] + 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). + [...] + + 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) + + 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). + [...] + + 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) + + [...] + 23. Let iteratorRecord be Record {[[iterator]]: + CreateListIterator(argumentsList), [[done]]: false}. + 24. If hasDuplicates is true, then + [...] + 25. Else, + b. Let formalStatus be IteratorBindingInitialization for formals with + iteratorRecord and env as arguments. + [...] + + + 14.1.19 Runtime Semantics: IteratorBindingInitialization + + FormalsList : FormalsList , FormalParameter + + [...] + 23. Let iteratorRecord be Record {[[Iterator]]: + CreateListIterator(argumentsList), [[Done]]: false}. + 24. If hasDuplicates is true, then + [...] + 25. Else, + a. Perform ? IteratorBindingInitialization for formals with + iteratorRecord and env as arguments. + [...] + +---*/ +var obj = {}; +var falseCount = 0; +var stringCount = 0; +var nanCount = 0; +var zeroCount = 0; +var nullCount = 0; +var objCount = 0; + +var callCount = 0; +// Stores a reference `ref` for case evaluation +function* ref(aFalse = falseCount +=1, aString = stringCount += 1, aNaN = nanCount += 1, a0 = zeroCount += 1, aNull = nullCount += 1, aObj = objCount +=1) { + assert.sameValue(aFalse, false); + assert.sameValue(aString, ''); + assert.sameValue(aNaN, NaN); + assert.sameValue(a0, 0); + assert.sameValue(aNull, null); + assert.sameValue(aObj, obj); + callCount = callCount + 1; +} + +ref(false, '', NaN, 0, null, obj).next(); + +assert.sameValue(callCount, 1, 'generator function invoked exactly once'); + +assert.sameValue(falseCount, 0, 'initializer not evaluated: false'); +assert.sameValue(stringCount, 0, 'initializer not evaluated: string'); +assert.sameValue(nanCount, 0, 'initializer not evaluated: NaN'); +assert.sameValue(zeroCount, 0, 'initializer not evaluated: 0'); +assert.sameValue(nullCount, 0, 'initializer not evaluated: null'); +assert.sameValue(objCount, 0, 'initializer not evaluated: object'); + +reportCompare(0, 0); |