refactor: Use fixtures for getUser graphQL tests

packages/backend/test/fixtures/user.ts

@@ -0,0 +1,27 @@
+import createRole from './role';
+import { faker } from '@faker-js/faker';
+
+type UserParams = {
+  roleId?: string;
+  fullName?: string;
+  email?: string;
+  password?: string;
+};
+
+const createUser = async (params: UserParams = {}) => {
+  const userData = {
+    role_id: params?.roleId || (await createRole()).id,
+    full_name: params?.fullName || faker.person.fullName(),
+    email: params?.email || faker.internet.email(),
+    password: params?.password || faker.internet.password(),
+  };
+
+  const [user] = await global.knex
+    .table('users')
+    .insert(userData)
+    .returning('*');
+
+  return user;
+};
+
+export default createUser;