public void AddAndRemoveContactTypeTest()
{
ContactsRepository repo = new ContactsRepository();
int i = repo.GetContactTypes().Count;
string name = "It's a contact type";
repo.AddContactType(name);
Assert.AreEqual(i + 1, repo.GetContactTypes().Count);
repo.RemoveContactType(repo.GetContactIDByName(name));
Assert.AreEqual(i, repo.GetContactTypes().Count);
}