public void AddTodo()
{
var todo = new Todo()
{
Text = "Text123",
TodoListId = 1,
};
var result = _controller.AddTodo(todo) as ObjectResult;
Assert.True(result.Value != null, "result is null");
Assert.True(((Todo)result.Value).Text == "Text123", "Text is not Text123");
Assert.True(result.StatusCode == 200, "Status code is not OK");
}