diff options
Diffstat (limited to 'js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elem-id-init-skipped.js')
-rw-r--r-- | js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elem-id-init-skipped.js | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elem-id-init-skipped.js b/js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elem-id-init-skipped.js new file mode 100644 index 0000000000..7f383fd9c7 --- /dev/null +++ b/js/src/tests/test262/language/expressions/function/dstr/dflt-ary-ptrn-elem-id-init-skipped.js @@ -0,0 +1,69 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-elem-id-init-skipped.case +// - src/dstr-binding/default/func-expr-dflt.template +/*--- +description: Destructuring initializer is not evaluated when value is not `undefined` (function expression (default parameter)) +esid: sec-function-definitions-runtime-semantics-evaluation +features: [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 + + SingleNameBinding : BindingIdentifier Initializeropt + + [...] + 6. If Initializer is present and v is undefined, then + [...] + 7. If environment is undefined, return PutValue(lhs, v). + 8. Return InitializeReferencedBinding(lhs, v). +---*/ +var initCount = 0; +function counter() { + initCount += 1; +} + +var callCount = 0; +var f; +f = function([w = counter(), x = counter(), y = counter(), z = counter()] = [null, 0, false, '']) { + assert.sameValue(w, null); + assert.sameValue(x, 0); + assert.sameValue(y, false); + assert.sameValue(z, ''); + assert.sameValue(initCount, 0); + callCount = callCount + 1; +}; + +f(); +assert.sameValue(callCount, 1, 'function invoked exactly once'); + +reportCompare(0, 0); |