public async void AuthApi_Login_CallsCorrectUrl() { // arrange var username = _fixture.Create <string>(); var password = _fixture.Create <string>(); var otpCode = _fixture.Create <string>(); var expectedResponse = new ApiResponse <LoginResponse> { Success = true, Data = _fixture.Create <LoginResponse>() }; _httpTest.RespondWithJson(expectedResponse); // act await _authApi.LoginAsync(username, password, otpCode); // assert _httpTest .ShouldHaveCalled($"{_synologyFixture.BaseUrl}/{_apiInfo.Path}*") .WithQueryParams(new { api = _apiInfo.Name, version = _apiInfo.Version, method = "login", account = username, passwd = password, session = _apiInfo.SessionName, format = "sid", otp_code = otpCode }); }