public void Card_HashCodes_ShouldBe_Equal_Fails()
{
var card1 = new Card_GetHashCodeThrowsException(CardValue.Ace, CardSuit.Diamond);
var card2 = new Card_GetHashCodeThrowsException(CardValue.Ace, CardSuit.Diamond);
Assert.Equal(card1.GetHashCode(), card2.GetHashCode()); //ArgumentException
}
public void CardEquality()
{
var card1 = new Card_GetHashCodeThrowsException(CardValue.Two, CardSuit.Club);
var card2 = new Card_GetHashCodeThrowsException(CardValue.Two, CardSuit.Club);
Assert.Equal(card1, card2);
}
public void HashTable_Key_MustBe_Unique_Fails()
{
var card1 = new Card_GetHashCodeThrowsException(CardValue.Two, CardSuit.Club);
var card2 = new Card_GetHashCodeThrowsException(CardValue.Two, CardSuit.Club);
//we can't add to a hashtable, because GetHashCode() throws NotImplementedException
var hash = new Hashtable();
hash.Add(card1, ""); //fails: throws NotImplementedException
Assert.Throws <ArgumentException>(() => hash.Add(card2, "")); //fails: throws NotImplementedException
}
public void HashTable_ContainsKey_ShouldBe_True_For_Like_Values_Fails()
{
var card1 = new Card_GetHashCodeThrowsException(CardValue.Two, CardSuit.Club);
var card2 = new Card_GetHashCodeThrowsException(CardValue.Two, CardSuit.Club);
//we can't add to a hashtable, because GetHashCode() throws NotImplementedException
var hash = new Hashtable();
hash.Add(card1, ""); //fails: throws NotImplementedException
Assert.True(hash.ContainsKey(card1)); //fails: false
Assert.True(hash.ContainsKey(card2)); //fails: false
}
public void Card_Dictionary_ShouldNotContain_DuplicateKeys()
{
var card1 = new Card_GetHashCodeThrowsException(CardValue.Ace, CardSuit.Diamond);
var card2 = new Card_GetHashCodeThrowsException(CardValue.Ace, CardSuit.Diamond);
var dictionary = new Dictionary <Card_GetHashCodeThrowsException, string>();
dictionary.Add(card1, "");
Assert.True(dictionary.ContainsKey(card1));
Assert.Throws <ArgumentException>(() =>
dictionary.Add(card2, "")
);
Assert.Single(dictionary);
}