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Diffstat (limited to 'js/src/tests/test262/language/expressions/object/dstr/gen-meth-dflt-ary-ptrn-empty.js')
-rw-r--r-- | js/src/tests/test262/language/expressions/object/dstr/gen-meth-dflt-ary-ptrn-empty.js | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/object/dstr/gen-meth-dflt-ary-ptrn-empty.js b/js/src/tests/test262/language/expressions/object/dstr/gen-meth-dflt-ary-ptrn-empty.js new file mode 100644 index 0000000000..370a417963 --- /dev/null +++ b/js/src/tests/test262/language/expressions/object/dstr/gen-meth-dflt-ary-ptrn-empty.js @@ -0,0 +1,68 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-empty.case +// - src/dstr-binding/default/gen-method-dflt.template +/*--- +description: No iteration occurs for an "empty" array binding pattern (generator method (default parameter)) +esid: sec-generator-function-definitions-runtime-semantics-propertydefinitionevaluation +features: [generators, destructuring-binding, default-parameters] +flags: [generated] +info: | + GeneratorMethod : + * PropertyName ( StrictFormalParameters ) { GeneratorBody } + + 1. Let propKey be the result of evaluating PropertyName. + 2. ReturnIfAbrupt(propKey). + 3. If the function code for this GeneratorMethod is strict mode code, + let strict be true. Otherwise let strict be false. + 4. Let scope be the running execution context's LexicalEnvironment. + 5. Let closure be GeneratorFunctionCreate(Method, + StrictFormalParameters, 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. + [...] + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + + ArrayBindingPattern : [ ] + + 1. Return NormalCompletion(empty). + +---*/ +var iterations = 0; +var iter = function*() { + iterations += 1; +}(); + +var callCount = 0; +var obj = { + *method([] = iter) { + assert.sameValue(iterations, 0); + callCount = callCount + 1; + } +}; + +obj.method().next(); +assert.sameValue(callCount, 1, 'generator method invoked exactly once'); + +reportCompare(0, 0); |