1 files changed, 23 insertions, 0 deletions
diff --git a/spec/frontend/user_lists/store/utils_spec.js b/spec/frontend/user_lists/store/utils_spec.js
new file mode 100644
index 00000000000..9547b463eec
--- /dev/null
+++ b/spec/frontend/user_lists/store/utils_spec.js
@@ -0,0 +1,23 @@
+import { parseUserIds, stringifyUserIds } from '~/user_lists/store/utils';
+
+describe('User List Store Utils', () => {
+  describe('parseUserIds', () => {
+    it('should split comma-seperated user IDs into an array', () => {
+      expect(parseUserIds('1,2,3')).toEqual(['1', '2', '3']);
+    });
+
+    it('should filter whitespace before the comma', () => {
+      expect(parseUserIds('1\t,2     ,3')).toEqual(['1', '2', '3']);
+    });
+
+    it('should filter whitespace after the comma', () => {
+      expect(parseUserIds('1,\t2,    3')).toEqual(['1', '2', '3']);
+    });
+  });
+
+  describe('stringifyUserIds', () => {
+    it('should convert a list of user IDs into a comma-separated string', () => {
+      expect(stringifyUserIds(['1', '2', '3'])).toBe('1,2,3');
+    });
+  });
+});