Question

我有一个Firestore数据库类，正在尝试测试。我有多个对象，可以根据提供的路径将其保存到不同的集合中。测试项目文档和审阅对象文档的创建时-尽管项目测试几乎相同，但项目对象测试通过并且审阅对象测试失败。这是一些示例代码：

///FirestoreService class - setData method
///I have an updated version of this method with a .catchError((e) => false);
///I have added it below, but I may be wrong on the syntax, I am adding this 
///from memory as I am not at my regular workspace at the moment

Future<bool> setData(

  {bool isAdd = false, String path, Map<String, dynamic> data}) async {

if (isAdd) {

  await Firestore.instance.collection(path).add(data).catchError((e) => false);

  print('$path: $data');

} else {

  final reference = Firestore.instance.document(path);

  print('$path: $data');

  await reference.setData(data).catchError((e) => false);

}
return true;

}


///FirestoreDatabase class

/// Paths.items() = "items"; references collection 'items'
/// Paths.reviews() = "reviews"; references collection 'reviews'

final _service = FirestoreService.instance;

FirestoreService set(FirestoreService service) => _service = service;


  @override

  Future<bool> addItem(Item item) async => await _service.setData(

      isAdd: true, path: Paths.items(), data: item.toMap());


  @override

  Future<bool> addReview(Review review) async => await _service.setData(

      isAdd: true, path: Paths.reviews(), data: review.toMap());

测试：


class MockFirestoreService extends Mock implements FirestoreService {}

main() {
  MockFirestoreService service;
  FirestoreDatabase db;
  Item item;
  Review review;

  setup() {
    service = MockFirestoreService();
    db = FirestoreDatabase();
    db.set(service); //Use the mock firestore service

    item = Item(id: 'abc', name: 'abc', description: 'abc test');
    review = Review(id: 'def' rating: 5.0, text: 'review of abc', itemId: 'abc');
  }

  test('This test passes', () async {
    when(service.setData(isAdd: true, path: Paths.items(), data: item.toMap())
.thenAnswer((_) => Future.value(true);

    final bool result = await db.addItem(item);

    expect(result, true);
  });

test('This test fails', () async {
    when(service.setData(isAdd: true, path: Paths.reviews(), data: review.toMap())
.thenAnswer((_) => Future.value(true);

    final bool result = await db.addReview(review);

    expect(result, true);
  });
}

第一个添加模拟项的测试通过，而第二个添加评论的测试失败，期望值为true，但返回null。

我也尝试过期望完成：

expect(db.setReview(review), completion(expect(true)));

我无法理解为什么一个测试通过了，而另一个却失败了。任何帮助，或对我的代码的改进表示赞赏！谢谢！

Answer 1

我通常会这样，并且没有问题：设置模拟函数，然后在其后立即分配模拟对象。例如：

 when(service.setData(isAdd: true, path: Paths.items(), data: item.toMap())
   .thenAnswer((_) => Future.value(true);
 db.set(service);

颤振单元测试：某些测试通过，而其他类似的测试失败

1 个答案: