summaryrefslogtreecommitdiffstats
path: root/js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-elision.js
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-elision.js')
-rw-r--r--js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-elision.js77
1 files changed, 77 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-elision.js b/js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-elision.js
new file mode 100644
index 0000000000..dacc91f8e5
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-elision.js
@@ -0,0 +1,77 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision.case
+// - src/dstr-binding/default/for-const.template
+/*---
+description: Elision advances iterator (for statement)
+esid: sec-for-statement-runtime-semantics-labelledevaluation
+features: [generators, 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 : [ 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 (const [,] = g(); iterCount < 1; ) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 0);
+
+ iterCount += 1;
+}
+
+assert.sameValue(iterCount, 1, 'Iteration occurred as expected');
+
+reportCompare(0, 0);