Flutter import 'utils.dart'失败

测试以下代码时报错 1 'utils.dart'不存在；2 initNorthChina 未定义。请问该怎么处理？谢谢！

import 'package:flutter_test/flutter_test.dart';
import 'package:leancloud_storage/leancloud.dart';

import 'utils.dart';

void main() {
  group('cloud', () {
    setUp(() => initNorthChina());

    test('call', () async {
      Map response = await LCCloud.run('hello', params: {'name': 'world'});
      print(response['result']);
      assert(response['result'] == 'hello, world');
    });

    test('call no params', () async {
      await LCCloud.run('hello');
    });

    test('rpc', () async {
      Map result = await LCCloud.rpc('getTycoonList');
      List tycoonList = result['result'];
      tycoonList.forEach((item) {
        print(item.objectId);
        assert(item.objectId != null);
      });
    });
  });
}

原来是整个一个项目里test的一部分，我之前理解错了。感谢！