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Diffstat (limited to 'js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elision.js')
-rw-r--r-- | js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elision.js | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elision.js b/js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elision.js new file mode 100644 index 0000000000..cf230f2386 --- /dev/null +++ b/js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elision.js @@ -0,0 +1,79 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-elision.case +// - src/dstr-binding/default/func-expr-dflt.template +/*--- +description: Elision advances iterator (function expression (default parameter)) +esid: sec-function-definitions-runtime-semantics-evaluation +features: [generators, destructuring-binding, default-parameters] +flags: [generated] +info: | + FunctionExpression : function ( FormalParameters ) { FunctionBody } + + [...] + 3. Let closure be FunctionCreate(Normal, FormalParameters, FunctionBody, + 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 : [ Elision ] + + 1. Return the result of performing + IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord + as the argument. + + 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation + + Elision : , + + 1. If iteratorRecord.[[done]] is false, then + a. Let next be IteratorStep(iteratorRecord.[[iterator]]). + b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. + c. ReturnIfAbrupt(next). + d. If next is false, set iteratorRecord.[[done]] to true. + 2. Return NormalCompletion(empty). + +---*/ +var first = 0; +var second = 0; +function* g() { + first += 1; + yield; + second += 1; +}; + +var callCount = 0; +var f; +f = function([,] = g()) { + assert.sameValue(first, 1); + assert.sameValue(second, 0); + callCount = callCount + 1; +}; + +f(); +assert.sameValue(callCount, 1, 'function invoked exactly once'); + +reportCompare(0, 0); |