1 files changed, 22 insertions, 0 deletions
diff --git a/test/language/expressions/optional-chaining/iteration-statement-for-in.js b/test/language/expressions/optional-chaining/iteration-statement-for-in.js
new file mode 100644
index 000000000..2823b8053
--- /dev/null
+++ b/test/language/expressions/optional-chaining/iteration-statement-for-in.js
@@ -0,0 +1,22 @@
+// Copyright 2019 Google, LLC.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: prod-OptionalExpression
+description: >
+  optional chain in test portion of do while statement
+info: |
+  IterationStatement
+    for (LeftHandSideExpression in Expression) Statement
+features: [optional-chaining]
+---*/
+const obj = {
+  inner: {
+    a: 1,
+    b: 2
+  }
+};
+let str = '';
+for (const key in obj?.inner) {
+  str += key;
+}
+assert.sameValue('ab', str);