diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for-of/dstr/var-ary-ptrn-rest-ary-elision.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-of/dstr/var-ary-ptrn-rest-ary-elision.js | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-of/dstr/var-ary-ptrn-rest-ary-elision.js b/js/src/tests/test262/language/statements/for-of/dstr/var-ary-ptrn-rest-ary-elision.js new file mode 100644 index 0000000000..ab25275749 --- /dev/null +++ b/js/src/tests/test262/language/statements/for-of/dstr/var-ary-ptrn-rest-ary-elision.js @@ -0,0 +1,87 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-rest-ary-elision.case +// - src/dstr-binding/default/for-of-var.template +/*--- +description: Rest element containing an elision (for-of statement) +esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation +features: [generators, destructuring-binding] +flags: [generated] +info: | + IterationStatement : + for ( var ForBinding of AssignmentExpression ) Statement + + [...] + 3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, + varBinding, labelSet). + + 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation + + [...] + 3. Let destructuring be IsDestructuring of lhs. + [...] + 5. Repeat + [...] + h. If destructuring is false, then + [...] + i. Else + i. If lhsKind is assignment, then + [...] + ii. Else if lhsKind is varBinding, then + 1. Assert: lhs is a ForBinding. + 2. Let status be the result of performing BindingInitialization + for lhs passing nextValue and undefined as the arguments. + [...] + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + + BindingRestElement : ... BindingPattern + + 1. Let A be ArrayCreate(0). + [...] + 3. Repeat + [...] + b. If iteratorRecord.[[done]] is true, then + i. Return the result of performing BindingInitialization of + BindingPattern with A and environment as the 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 iterCount = 0; + +for (var [...[,]] of [g()]) { + assert.sameValue(first, 1); + assert.sameValue(second, 1); + + iterCount += 1; +} + +assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); + +reportCompare(0, 0); |