public void MapTakeSurveyVMToSurveyFailsIfSurveyNotFound()
{
// Testing for a NullReferenceException if the survey cannot
// be found. This would bubble up to be handled by the
// application error handler.
// Assert
// 1 Mock the SurveyRepository class
var mockSurveyRepository = new Mock<ISurveyRepository>();
mockSurveyRepository.Setup(r => r.GetSurvey(0)).Returns(mockData.GetSurvey3());
// 2 Mock the RespondentFactory class
var mockRespondentFactory = new Mock<RespondentFactory>();
mockRespondentFactory.Setup(r => r.Create()).Returns(mockData.CreateRespondent());
// 3 Mock the ActualResponseFactory class
var mockActualResponseFactory = new Mock<ActualResponseFactory>();
mockActualResponseFactory.Setup(f => f.Create()).Returns(mockData.CreateResponse());
// 4 set up the TakeSurveyViewModel class
var inputViewModel = mockData.SetTakeSurveyViewModel_3();
// Instantiate the class being tested
var mapper = new THSurveys.Mappings.MapTakeSurveyViewModelToSurvey(mockSurveyRepository.Object, mockRespondentFactory.Object, mockActualResponseFactory.Object);
// Act
// Execute the Map method
try
{
var mappedSurvey = mapper.Map(inputViewModel);
// Assert failure
Assert.Fail("No exception thrown, expected a NullReferenece exception");
}
catch (Exception e)
{
// Assert pass, the exception has been thrown.
Assert.IsNotNull(e, "Exception expected");
Assert.IsInstanceOfType(e, typeof(NullReferenceException), "Expected NullReferenceException");
}
}
public void MapTakeSurveyVMToSurveyOK()
{
// Assert
// 1 Mock the SurveyRepository class
var mockSurveyRepository = new Mock<ISurveyRepository>();
mockSurveyRepository.Setup(r => r.GetSurvey(3)).Returns(mockData.GetSurvey3());
// 2 Mock the RespondentFactory class
var mockRespondentFactory = new Mock<RespondentFactory>();
mockRespondentFactory.Setup(r => r.Create()).Returns(mockData.CreateRespondent());
// 3 Mock the ActualResponseFactory class
var mockActualResponseFactory = new Mock<ActualResponseFactory>();
mockActualResponseFactory.Setup(f => f.Create()).Returns(mockData.CreateResponse());
// 4 set up the TakeSurveyViewModel class
var inputViewModel = mockData.SetTakeSurveyViewModel_3();
// Instantiate the class being tested
var mapper = new THSurveys.Mappings.MapTakeSurveyViewModelToSurvey(mockSurveyRepository.Object, mockRespondentFactory.Object, mockActualResponseFactory.Object);
// Act
// Execute the Map method
var mappedSurvey = mapper.Map(inputViewModel);
// Assert
// 1 Check the Survey class is not null
Assert.IsNotNull(mappedSurvey, "Should have returned an instance of Survey class.");
// 2 Check the Survey class has the correct survey
Assert.AreEqual(3D, mappedSurvey.SurveyId, "Expected survey 3 to be returned");
// 3 Check the Survey class has the correct number of responses
Assert.AreEqual(1, mappedSurvey.Respondents.Count(), "Expected 2 responses, as there are 2 questions.");
// 4 Check the Survey class has the correct answer for the 1st question.
var respondent = mappedSurvey.Respondents.First();
var q1Response = respondent.Responses.First();
Assert.AreEqual(5, q1Response.Response, "Expected answer 5 to question 1");
}
