diff --git a/packages/backend/src/serializers/app-auth-client.test.js b/packages/backend/src/serializers/app-auth-client.test.js
new file mode 100644
index 00000000..7352f70d
--- /dev/null
+++ b/packages/backend/src/serializers/app-auth-client.test.js
@@ -0,0 +1,22 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createAppAuthClient } from '../../test/factories/app-auth-client';
+import appAuthClientSerializer from './app-auth-client';
+
+describe('appAuthClient serializer', () => {
+  let appAuthClient;
+
+  beforeEach(async () => {
+    appAuthClient = await createAppAuthClient();
+  });
+
+  it('should return app auth client data', async () => {
+    const expectedPayload = {
+      id: appAuthClient.id,
+      appConfigId: appAuthClient.appConfigId,
+      name: appAuthClient.name,
+      active: appAuthClient.active,
+    };
+
+    expect(appAuthClientSerializer(appAuthClient)).toEqual(expectedPayload);
+  });
+});