public void IsValidLogin_ShouldReturnTrue_WhenExistAccount()
{
// arrange
UserRepository_Stub stub = new UserRepository_Stub();
stub.ShouldBeValid = true;
UserService service = new UserService();
service.UserRepository = stub;
// act
LoginModel model = new LoginModel() { Username = "******", Password = "******" };
bool result = service.IsValidLogin(model);
// assert
Assert.AreEqual(true, result);
}
public bool IsValidLogin(LoginModel model)
{
// some validation
return UserRepository.IsExist(model.Username, model.Password);
}