diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for/dstr/var-obj-ptrn-id-init-skipped.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for/dstr/var-obj-ptrn-id-init-skipped.js | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for/dstr/var-obj-ptrn-id-init-skipped.js b/js/src/tests/test262/language/statements/for/dstr/var-obj-ptrn-id-init-skipped.js new file mode 100644 index 0000000000..d03ad26240 --- /dev/null +++ b/js/src/tests/test262/language/statements/for/dstr/var-obj-ptrn-id-init-skipped.js @@ -0,0 +1,59 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/obj-ptrn-id-init-skipped.case +// - src/dstr-binding/default/for-var.template +/*--- +description: Destructuring initializer is not evaluated when value is not `undefined` (for statement) +esid: sec-for-statement-runtime-semantics-labelledevaluation +features: [destructuring-binding] +flags: [generated] +info: | + IterationStatement : + for ( var VariableDeclarationList ; Expressionopt ; Expressionopt ) Statement + + 1. Let varDcl be the result of evaluating VariableDeclarationList. + [...] + + 13.3.2.4 Runtime Semantics: Evaluation + + VariableDeclarationList : VariableDeclarationList , VariableDeclaration + + 1. Let next be the result of evaluating VariableDeclarationList. + 2. ReturnIfAbrupt(next). + 3. Return the result of evaluating VariableDeclaration. + + VariableDeclaration : BindingPattern Initializer + + 1. Let rhs be the result of evaluating Initializer. + 2. Let rval be GetValue(rhs). + 3. ReturnIfAbrupt(rval). + 4. Return the result of performing BindingInitialization for BindingPattern + passing rval and undefined as arguments. + + 13.3.3.7 Runtime Semantics: KeyedBindingInitialization + + SingleNameBinding : BindingIdentifier Initializeropt + + [...] + 6. If Initializer is present and v is undefined, then + [...] + [...] +---*/ +var initCount = 0; +function counter() { + initCount += 1; +} + +var iterCount = 0; + +for (var { w = counter(), x = counter(), y = counter(), z = counter() } = { w: null, x: 0, y: false, z: '' }; iterCount < 1; ) { + assert.sameValue(w, null); + assert.sameValue(x, 0); + assert.sameValue(y, false); + assert.sameValue(z, ''); + assert.sameValue(initCount, 0); + iterCount += 1; +} + +assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); + +reportCompare(0, 0); |