public void CardEquality()
{
var card1 = new Card_IsMutable(CardValue.Two, CardSuit.Club);
var card2 = new Card_IsMutable(CardValue.Two, CardSuit.Club);
Assert.Equal(card1, card2);
}
public void Card_IsMutable_CausesProblems_OnHashTable()
{
// var AceOfDiamonds = new Card_IsMutable(CardValue.Ace, CardSuit.Diamond);
// var AceOfHearts = new Card_IsMutable(CardValue.Ace, CardSuit.Heart);
var mutableCard = new Card_IsMutable(CardValue.Ace, CardSuit.Diamond);
//add the Ace Of Diamonds to the hash table
var hash = new HashSet <Card_IsMutable>();
hash.Add(mutableCard);
Assert.Equal(mutableCard, new Card_IsMutable(CardValue.Ace, CardSuit.Diamond));
Assert.True(hash.Contains(new Card_IsMutable(CardValue.Ace, CardSuit.Diamond)));
//now we mutate the mutableCard from an Ace Of Diamonds to an Ace Of Hearts
mutableCard.Suit = CardSuit.Heart;
//the mutated card is equal to an Ace of Hearts
Assert.Equal(mutableCard, new Card_IsMutable(CardValue.Ace, CardSuit.Heart));
//but the Hashtable doesn't contain an ace of hearts
Assert.False(hash.Contains(new Card_IsMutable(CardValue.Ace, CardSuit.Heart))); //so this fails
Assert.False(hash.Contains(new Card_IsMutable(CardValue.Ace, CardSuit.Diamond)));
var i = hash.GetEnumerator();
i.MoveNext();
var cardFromHashTable = i.Current;
Assert.Equal(cardFromHashTable, new Card_IsMutable(CardValue.Ace, CardSuit.Heart));
//now we mutate the mutableCard from an Ace Of Diamonds to an Ace Of Hearts
mutableCard.Suit = CardSuit.Diamond;
Assert.False(hash.Contains(new Card_IsMutable(CardValue.Ace, CardSuit.Heart))); //so this fails
Assert.True(hash.Contains(new Card_IsMutable(CardValue.Ace, CardSuit.Diamond)));
}
public void Card_IsMutable_CausesProblems()
{
// var AceOfDiamonds = new Card_IsMutable(CardValue.Ace, CardSuit.Diamond);
// var AceOfHearts = new Card_IsMutable(CardValue.Ace, CardSuit.Heart);
var mutableCard = new Card_IsMutable(CardValue.Ace, CardSuit.Diamond);
//add the Ace Of Diamonds to the hash table
var hash = new Hashtable();
hash.Add(mutableCard, "");
Assert.Equal(mutableCard, new Card_IsMutable(CardValue.Ace, CardSuit.Diamond));
Assert.True(hash.ContainsKey(new Card_IsMutable(CardValue.Ace, CardSuit.Diamond)));
//now we mutate the mutableCard from an Ace Of Diamonds to an Ace Of Hearts
mutableCard.Suit = CardSuit.Heart;
//the mutated card is equal to an Ace of Hearts
Assert.Equal(mutableCard, new Card_IsMutable(CardValue.Ace, CardSuit.Heart));
//but the Hashtable doesn't contain an ace of hearts
Assert.True(hash.ContainsKey(new Card_IsMutable(CardValue.Ace, CardSuit.Heart))); //so this fails
}