feat: Add connection serializer

packages/backend/src/serializers/connection.test.js

@@ -0,0 +1,28 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createConnection } from '../../test/factories/connection';
+import connectionSerializer from './connection';
+
+describe('connectionSerializer', () => {
+  let connection;
+
+  beforeEach(async () => {
+    connection = await createConnection();
+  });
+
+  it('should return connection data', async () => {
+    const expectedPayload = {
+      id: connection.id,
+      key: connection.key,
+      reconnectable: connection.reconnectable,
+      appAuthClientId: connection.appAuthClientId,
+      formattedData: {
+        screenName: connection.formattedData.screenName,
+      },
+      verified: connection.verified,
+      createdAt: connection.createdAt.getTime(),
+      updatedAt: connection.updatedAt.getTime(),
+    };
+
+    expect(connectionSerializer(connection)).toEqual(expectedPayload);
+  });
+});