Question

New to Moq and Mocking in general. Testing a class that has a generic RepositoryFactory and uses several of it’s repositories. Should I initialize like this or is there some better way?

Mock<IRepositoryFactory> factory;
        Mock<IRepository<User>> userRepository;
        Mock<IRepository<Role>> roleRepository;
        Mock<IRepository<Meeting>> meetingRepository;

        [TestInitialize()]
        public void MyTestInitialize()
        {
            meetingRepository = new Mock<IRepository<Meeting>>();
            //some meeting setup

            userRepository = new Mock<IRepository<User>>();
            //some user setup

            roleRepository = new Mock<IRepository<Role>>();
            //some role setup

            factory = new Mock<IRepositoryFactory>();
            factory.Setup(f => f.CreateRepository<Meeting>()).Returns(meetingRepository.Object);
            factory.Setup(f => f.CreateRepository<User>()).Returns(userRepository.Object);
            factory.Setup(f => f.CreateRepository<Role>()).Returns(roleRepository.Object);

Note that I could have mcuh more.

here I’m doing it all in my initialize method but guess I should do it individually or something also.

Answer 1

I don’t know of a way to set up f => f.CreateRepository<T>(), considering that your repository setup could be different for each T. Aside from that, you can use functional specifications (see this blog post), which makes things a bit cleaner.

For your example, it would look like this:

var factory = Mock.Of<IRepositoryFactory>(
    x => 
    x.CreateRepository<Meeting>() == Mock.Of<IRepository<Meeting>>() &&
    x.CreateRepository<Role>() == Mock.Of<IRepository<Role>>() &&
    x.CreateRepository<User>() == Mock.Of<IRepository<User>>()
    );