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Diffstat (limited to 'js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js')
-rw-r--r-- | js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js new file mode 100644 index 0000000000..8a5c0e44ba --- /dev/null +++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js @@ -0,0 +1,52 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-elision.case +// - src/dstr-binding/default/const-stmt.template +/*--- +description: Elision advances iterator (`const` statement) +esid: sec-let-and-const-declarations-runtime-semantics-evaluation +features: [generators, destructuring-binding] +flags: [generated] +info: | + 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 : [ 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; +}; + +const [,] = g(); + +assert.sameValue(first, 1); +assert.sameValue(second, 0); + +reportCompare(0, 0); |