diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for/dstr/let-ary-ptrn-rest-id-elision.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for/dstr/let-ary-ptrn-rest-id-elision.js | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for/dstr/let-ary-ptrn-rest-id-elision.js b/js/src/tests/test262/language/statements/for/dstr/let-ary-ptrn-rest-id-elision.js new file mode 100644 index 0000000000..51e1dcf888 --- /dev/null +++ b/js/src/tests/test262/language/statements/for/dstr/let-ary-ptrn-rest-id-elision.js @@ -0,0 +1,65 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-rest-id-elision.case +// - src/dstr-binding/default/for-let.template +/*--- +description: Rest element following elision elements (for statement) +esid: sec-for-statement-runtime-semantics-labelledevaluation +features: [destructuring-binding] +flags: [generated] +info: | + IterationStatement : + for ( LexicalDeclaration Expressionopt ; Expressionopt ) Statement + + [...] + 7. Let forDcl be the result of evaluating LexicalDeclaration. + [...] + + LexicalDeclaration : LetOrConst BindingList ; + + 1. Let next be the result of evaluating BindingList. + 2. ReturnIfAbrupt(next). + 3. Return NormalCompletion(empty). + + BindingList : BindingList , LexicalBinding + + 1. Let next be the result of evaluating BindingList. + 2. ReturnIfAbrupt(next). + 3. Return the result of evaluating LexicalBinding. + + LexicalBinding : BindingPattern Initializer + + 1. Let rhs be the result of evaluating Initializer. + 2. Let value be GetValue(rhs). + 3. ReturnIfAbrupt(value). + 4. Let env be the running execution context’s LexicalEnvironment. + 5. Return the result of performing BindingInitialization for BindingPattern + using value and env as the arguments. + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + ArrayBindingPattern : [ Elisionopt BindingRestElement ] + 1. If Elision is present, then + a. Let status be the result of performing + IteratorDestructuringAssignmentEvaluation of Elision with + iteratorRecord as the argument. + b. ReturnIfAbrupt(status). + 2. Return the result of performing IteratorBindingInitialization for + BindingRestElement with iteratorRecord and environment as arguments. +---*/ +var values = [1, 2, 3, 4, 5]; + +var iterCount = 0; + +for (let [ , , ...x] = values; iterCount < 1; ) { + assert(Array.isArray(x)); + assert.sameValue(x.length, 3); + assert.sameValue(x[0], 3); + assert.sameValue(x[1], 4); + assert.sameValue(x[2], 5); + assert.notSameValue(x, values); + + iterCount += 1; +} + +assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); + +reportCompare(0, 0); |