public void ValidRemoveData()
{
var array = new Person[1]
{
new Person(1, "Ivan1"),
};
var database = new ExtendedDatabasee(array);
database.Remove();
Assert.IsTrue(database.Count == 0);
}
public void RemovePersonWhenDatabaseIsEmpty()
{
var database = new ExtendedDatabasee();
Assert.Throws <InvalidOperationException>(() => database.Remove());
}