错误状态：没有从 `when()` 中调用方法存根

Question

我正在尝试在我的 signInAnonyymous() 函数中测试我的捕获量。然而，我不断收到标题中所述的错误。

这是我的模拟验证 class（为简洁起见进行了编辑）：

class MockFirebaseAuth extends Mock implements FirebaseAuth {
  final bool signedIn;
  final bool isEmployee;

  MockFirebaseAuth({this.isEmployee = false, this.signedIn = false});

  @override
  Future<UserCredential> signInAnonymously() async {
  return MockUserCredential(isAnonymous: true);
  }
}

而且，这是我的测试：

group('Sign-In-Anonymously', () {
setUp(() {
  mockFunctions = MockFirebaseFunctions();
  mockAuth = MockFirebaseAuth();
  mockCrashltyics = MockCrashlytics();
  mockFirestore = MockFirebaseFirestore();
  authRemoteService = AuthServiceFirebase(
    crashlytics: mockCrashltyics,
    firestoreService: mockFirestore,
    functions: mockFunctions,
    service: mockAuth,
  );
  authProvider = AuthProvider(authRemoteService);
});

test(
    'Should return a null AuthUser and non-null errorMessage on exception thrown',
    () async {
  when(mockAuth.signInAnonymously())
      .thenThrow(MockFirebaseAuthException('message', 'code'));
  //act
  await authProvider.signInAnonymously();
  //assert
  expect(authProvider.authUser, isNull);
  expect(authProvider.errorMessage, isNotNull);
});
});

我已经研究并尝试了很多不同的方法，但仍然无法测试我的捕获量。任何帮助，将不胜感激。提前谢谢你。

Answer 1

如果您要使用 'when'，则不能覆盖 mock 中的方法。您需要提供来自“thenAnswer”的答案。

错误状态：没有从 `when()` 中调用方法存根

Bad state: No method stub was called from within `when()`

mockito

flutter