private void _ValidateDataAccess(IQuizDataAccess quizDataAccess)
{
if (quizDataAccess == null)
{
throw new ArgumentNullException("quizDataAccess");
}
}
private void _PrepareMockedQuizDataAccess()
{
//prepare the repository's db dependency using the moq framework
_MockingService = new Mock <IQuizDataAccess>();
var returnQuizList = PrepareTestQuizCollection();
//Setup the mock object to return a collection of quiz objects
//when calling the GetAllQuizesFromDatabase method
_MockingService
.Setup <IEnumerable <Quiz> >(q => q.GetAllQuizesFromDatabase())
.Returns(returnQuizList);
//Set the quiz sql data access to the mocked object reference
//The IQuizDataAccess reference will return the Quiz list
//that we've configured above. This allows us to test
//the repository without depending on the database which
//can't be relied on.
_QuizSqlDataAccess = _MockingService.Object;
}
public TopicRepository(IQuizDataAccess <Topic> dataAccess,
IQuizCache <Topic> quizCache)
{
_quizDataAccess = dataAccess;
_quizCache = quizCache;
}
/// <summary>
/// QuizRepository constructor
/// that allows dependency injection
/// upon instantiation.
/// </summary>
/// <param name="quizDataAccess">
/// A reference to the IQuizDataAccess
/// dependency that provides
/// access to the database.
/// </param>
public QuizRepository(IQuizDataAccess quizDataAccess)
{
_ValidateDataAccess(quizDataAccess);
this._QuizDataAccess = quizDataAccess;
}
public QuestionRepository(IQuizDataAccess <Question> quizDataAccess,
IQuizCache <Question> cache)
{
_quizDataAccess = quizDataAccess;
_quizCache = cache;
}
public AnswerRepository(IQuizDataAccess <Answer> quizDataAccess,
IQuizCache <Answer> cache)
{
_quizDataAccess = quizDataAccess;
_cache = cache;
}