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Diffstat (limited to 'js/src/tests/test262/language/expressions/arrow-function/dstr/obj-ptrn-prop-id-init-skipped.js')
-rw-r--r-- | js/src/tests/test262/language/expressions/arrow-function/dstr/obj-ptrn-prop-id-init-skipped.js | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/arrow-function/dstr/obj-ptrn-prop-id-init-skipped.js b/js/src/tests/test262/language/expressions/arrow-function/dstr/obj-ptrn-prop-id-init-skipped.js new file mode 100644 index 0000000000..394f871b01 --- /dev/null +++ b/js/src/tests/test262/language/expressions/arrow-function/dstr/obj-ptrn-prop-id-init-skipped.js @@ -0,0 +1,79 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/obj-ptrn-prop-id-init-skipped.case +// - src/dstr-binding/default/arrow-function.template +/*--- +description: Destructuring initializer is not evaluated when value is not `undefined` (arrow function expression) +esid: sec-arrow-function-definitions-runtime-semantics-evaluation +features: [destructuring-binding] +flags: [generated] +info: | + ArrowFunction : ArrowParameters => ConciseBody + + [...] + 4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, 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. + [...] + + 13.3.3.7 Runtime Semantics: KeyedBindingInitialization + + BindingElement : BindingPattern Initializeropt + + [...] + 3. If Initializer is present and v is undefined, then + [...] +---*/ +var initCount = 0; +function counter() { + initCount += 1; +} + +var callCount = 0; +var f; +f = ({ s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() }) => { + assert.sameValue(t, null); + assert.sameValue(v, 0); + assert.sameValue(x, false); + assert.sameValue(z, ''); + assert.sameValue(initCount, 0); + + assert.throws(ReferenceError, function() { + s; + }); + assert.throws(ReferenceError, function() { + u; + }); + assert.throws(ReferenceError, function() { + w; + }); + assert.throws(ReferenceError, function() { + y; + }); + callCount = callCount + 1; +}; + +f({ s: null, u: 0, w: false, y: '' }); +assert.sameValue(callCount, 1, 'arrow function invoked exactly once'); + +reportCompare(0, 0); |