public void ChangePhone_OldBeingReplacedWithExisting()
{
Phonebook book = new Phonebook();
List<string> phones = new List<string>();
phones.Add("+3592221431");
phones.Add("+3593484374");
phones.Add("+3598438748");
book.AddPhone("John", phones);
int oldPhonesCount = book.NamesDictionary["john"].PhoneNumbers.Count;
book.ChangePhone("+3592221431", "+3593484374");
int newPhonesCount = book.NamesDictionary["john"].PhoneNumbers.Count;
Assert.AreEqual(3, oldPhonesCount);
Assert.AreEqual(2, newPhonesCount); // instead of 3 with 2 being duplicated (+3593484374)
}
public void ChangePhone_WorksOnMultipleChanges()
{
Phonebook book = new Phonebook();
List<string> phones = new List<string>();
phones.Add("+35988199283");
phones.Add("+359848374");
phones.Add("+3599033874");
book.AddPhone("Test", phones);
int changes = book.ChangePhone("+359848374", "+4839474387");
Assert.AreEqual(1, changes);
changes = book.ChangePhone("+4839474387", "+359848374");
Assert.AreEqual(1, changes);
}
public void ChangePhone_WorksOnEqualOldAndNewNumbers()
{
Phonebook book = new Phonebook();
List<string> phones = new List<string>();
phones.Add("+3592221431");
phones.Add("+3593484374");
phones.Add("+3598438748");
book.AddPhone("John", phones);
int phonesChanged = book.ChangePhone("+359222111", "+359222111");
Assert.AreEqual(0, phonesChanged);
}
public void ChangePhone_WorksOnReplaceingNonExistingWithNoExisting()
{
Phonebook book = new Phonebook();
List<string> phones = new List<string>();
int changes = book.ChangePhone("+83948384", "+48394839843");
Assert.AreEqual(0, changes);
}
