1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/async-generator/dstr/dflt-obj-ptrn-prop-id-trailing-comma.js b/js/src/tests/test262/language/statements/async-generator/dstr/dflt-obj-ptrn-prop-id-trailing-comma.js
new file mode 100644
index 0000000000..308f9f5aca
--- /dev/null
+++ b/js/src/tests/test262/language/statements/async-generator/dstr/dflt-obj-ptrn-prop-id-trailing-comma.js
@@ -0,0 +1,40 @@
+// |reftest| async
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-trailing-comma.case
+// - src/dstr-binding/default/async-gen-func-decl-dflt.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (async generator function declaration (default parameter))
+esid: sec-asyncgenerator-definitions-instantiatefunctionobject
+features: [async-iteration]
+flags: [generated, async]
+info: |
+    AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
+        ( FormalParameters ) { AsyncGeneratorBody }
+
+        [...]
+        3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
+            scope, strict).
+        [...]
+
+
+    13.3.3 Destructuring Binding Patterns
+
+    ObjectBindingPattern[Yield] :
+        { }
+        { BindingPropertyList[?Yield] }
+        { BindingPropertyList[?Yield] , }
+---*/
+
+
+var callCount = 0;
+async function* f({ x: y, } = { x: 23 }) {
+  assert.sameValue(y, 23);
+
+  assert.throws(ReferenceError, function() {
+    x;
+  });
+  callCount = callCount + 1;
+};
+f().next().then(() => {
+    assert.sameValue(callCount, 1, 'invoked exactly once');
+}).then($DONE, $DONE);