[英]How to get Right of Future<Either<Error, List<dynamic>>> in Flutter?
[英]Dartz, flutter test - Can't get a Right part of Future<Either<L, R>>, instead of that - instance of Future<Either<L, R>> as a actual result
這是我第一次嘗試編寫測試。 我使用 Dartz 包,但我不知道如何根據我的測試只得到一個部件。 錯誤是:
預期:Right<dynamic, NumberTrivia>:<Right(NumberTrivia(test, 1))> 實際:<Instance of 'Future<Either<Failure, NumberTrivia>>'>
存儲庫中的功能:
abstract class NumberTriviaRepository {
Future<Either<Failure, NumberTrivia>> getConcreteNumberTrivia(int number);
Future<Either<Failure, NumberTrivia>> getRandomNumberTrivia();
}
用例中的功能:
class GetConcreteNumberTrivia {
final NumberTriviaRepository numberTriviaRepository;
GetConcreteNumberTrivia(this.numberTriviaRepository);
Future<Either<Failure, NumberTrivia>> execute({
required int number,
}) async {
return await numberTriviaRepository.getConcreteNumberTrivia(number);
}
}
和測試類:
import 'package:dartz/dartz.dart';
import 'package:mockito/annotations.dart';
import 'package:mockito/mockito.dart';
import 'package:number_trivia/features/number_trivia/domain/entities/number_trivia.dart';
import 'package:number_trivia/features/number_trivia/domain/repositories/number_trivia_repository.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:number_trivia/features/number_trivia/domain/usecases/get_concrete_number_trivia.dart';
import 'get_concrete_number_trivia_test.mocks.dart';
@GenerateMocks([NumberTriviaRepository])
void main() {
late GetConcreteNumberTrivia usecase;
late MockNumberTriviaRepository mockNumberTriviaRepository;
setUp(() {
mockNumberTriviaRepository = MockNumberTriviaRepository();
usecase = GetConcreteNumberTrivia(mockNumberTriviaRepository);
});
final tNumber = 1;
final tNumberTrivia = NumberTrivia(text: 'test', number: tNumber);
test('should get trivia for the number from the repository', () async {
// arrange
when(mockNumberTriviaRepository.getConcreteNumberTrivia(tNumber))
.thenAnswer((_) async => Right(tNumberTrivia));
// act
final result = usecase.execute(number: tNumber);
// assets
expect(result, Right(tNumberTrivia));
verify(mockNumberTriviaRepository.getConcreteNumberTrivia(tNumber));
verifyNoMoreInteractions(mockNumberTriviaRepository);
});
}
我的 git 代碼: https ://github.com/VeronikaHaichenko/clean_architecture_education
問題來了,因為usecase.execute(number: tNumber);
重新調整未來,在它之前使用await
。
// act
final result = await usecase.execute(number: tNumber);
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