1 files changed, 63 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-of/dstr/var-obj-ptrn-id-init-skipped.js b/js/src/tests/test262/language/statements/for-of/dstr/var-obj-ptrn-id-init-skipped.js
new file mode 100644
index 0000000000..b7af3e4968
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for-of/dstr/var-obj-ptrn-id-init-skipped.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-skipped.case
+// - src/dstr-binding/default/for-of-var.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [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.
+          [...]
+
+    13.3.3.7 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() } of [{ w: null, x: 0, y: false, z: '' }]) {
+  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);