public static void ChangePerson_NotNull()
{
Person person = new Person();
person.BirthDay = DateTime.Now;
person.FirstName = "first name";
person.MiddleName = "middle Name";
person.LastName = "middle Name";
person.PersonID = 10;
var rezult = _authorsController.ChangePerson(person);
Assert.NotNull(rezult);
}