diff --git a/static_src/shared/test/constants-stars.js b/static_src/shared/test/constants-stars.js
new file mode 100644
index 0000000..42e7012
--- /dev/null
+++ b/static_src/shared/test/constants-stars.js
@@ -0,0 +1,18 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'shared/typedef.js';
+
+export const PROJECT_STAR_NAME = 'users/1234/projectStars/monorail';
+export const PROJECT_STAR_NAME_2 = 'users/1234/projectStars/chromium';
+
+/** @type {ProjectStar} */
+export const PROJECT_STAR = Object.freeze({
+  name: PROJECT_STAR_NAME,
+});
+
+/** @type {ProjectStar} */
+export const PROJECT_STAR_2 = Object.freeze({
+  name: PROJECT_STAR_NAME_2,
+});