refactor: Use fixtures for getUser graphQL tests

packages/backend/test/fixtures/permission.ts

@@ -0,0 +1,24 @@
+import createRole from './role';
+
+type PermissionParams = {
+  roleId?: string;
+  action?: string;
+  subject?: string;
+};
+
+const createPermission = async (params: PermissionParams = {}) => {
+  const permissionData = {
+    role_id: params?.roleId || (await createRole()).id,
+    action: params?.action || 'read',
+    subject: params?.subject || 'User',
+  };
+
+  const [permission] = await global.knex
+    .table('permissions')
+    .insert(permissionData)
+    .returning('*');
+
+  return permission;
+};
+
+export default createPermission;