withoutExceptionHandling(); $admin = User::factory()->superuser()->create(); $user = User::factory()->forDepartment(['name' => 'Department A'])->create(); $department = Department::factory()->create(); $this->actingAsForApi($admin)->patch(route('api.users.update', $user), [ 'department_id' => ['id' => $department->id] ])->assertOk(); $this->assertTrue( $user->fresh()->department()->is($department), 'User is not associated with expected department' ); } }