public async Task CreateAsync_Should_Add_New_Entity_To_Database()
{
//Arrange
var createTodoListModel = Builder <CreateTodoListModel> .CreateNew().Build();
var todoList = Mapper.Map <TodoList>(createTodoListModel);
todoList.Id = Guid.NewGuid();
TodoListRepository.AddAsync(Arg.Any <TodoList>()).Returns(todoList);
//Act
var result = await _sut.CreateAsync(createTodoListModel);
//Assert
result.Id.Should().Be(todoList.Id);
await TodoListRepository.Received().AddAsync(Arg.Any <TodoList>());
}