Act Method

Now, we move on the Act section. In our testing environment, when we call the HomeController, it needs to be filled with our mock of repository.

// Act
HomeController controller = new HomeController(productRepository);

Unfortunately, we don't have the constructor of HomeController that takes productRepositoty input. So, just make it.

private Repository repository;

public HomeController(Repository repo)
{
    repository = repo;
}

However, we must have an empty constructor of HomeController.

public HomeController()
{
    repository =  null;
}