How to test fresh_dio with a Mock HttpClientAdapter?

[sidroniolima]

Thanks for the package!

I'm trying to test an API that uses the fresh_dio passing a HttpClientAdapter Mock as a dio.httpClientAdapter.

I can make some tests pass. Like this one:

`final httpPostResponse = ResponseBody.fromString(
responseData,
200,
headers: {
Headers.contentTypeHeader: [Headers.jsonContentType],
},
);

    when(
      () => mockDioAdapter.fetch(
        any(
          that: isA<RequestOptions>().having(
            (options) => options.method,
            'POST method',
            equals('POST'),
          ),
        ),
        any(),
        any(),
      ),
    ).thenAnswer((_) async => httpPostResponse);

    await meuEspacoApiClient.authenticate(
      username: 'username',
      password: 'password',
    );

    expect(
      meuEspacoApiClient.authenticationStatus,
      emitsAnyOf([AuthenticationStatus.authenticated]),
    );

    verify(
      () => mockDioAdapter.fetch(
        any(
          that: isA<RequestOptions>()
              .having(
                (options) => options.method,
                'POST method',
                equals('POST'),
              )
              .having(
                (options) => options.baseUrl,
                'Base URL',
                equals('http://localhost:8080'),
              ),
        ),
        any(),
        any(),
      ),
    ).called(1);`

But when I return a response with a status code equals to 401, then a refresh function is not called and the following DioException occurs:

DioException [bad response]: The request returned an invalid status code of 401.

If I handle the exception it not trigger the refresh token even.

I'm using this package wrong or missing something?

Please, help me.