/// <summary>
/// Returns less than one if _this_ hand is the losing hand.
/// Returns greater than one if _this_ hand is the winning hand.
/// Returns zero if the hands are a tie.
/// </summary>
/// <param name="other"></param>
/// <returns></returns>
public int CompareTo(PokerHand other)
{
List<Card> rankedAndOrderedCards;
List<Card> otherRankedAndOrderedCards;
var thisRank = ParseRank(out rankedAndOrderedCards);
var otherRank = other.ParseRank(out otherRankedAndOrderedCards);
if (thisRank != otherRank)
{
return thisRank - otherRank;
}
Debug.WriteLine("Comparing ({0})({1})", ShortNotationFromCardList(rankedAndOrderedCards), ShortNotationFromCardList(otherRankedAndOrderedCards));
Card highCard;
Card otherHighCard;
int idx = 0;
do
{
highCard = rankedAndOrderedCards[idx];
otherHighCard = otherRankedAndOrderedCards[idx];
idx++;
} while (highCard.Value == otherHighCard.Value && idx < rankedAndOrderedCards.Count);
return (int)highCard.Value - (int)otherHighCard.Value;
}
public void WhenHandIsRanked(string shortNotation, PokerHand.Rank expectedResult, string expectedOrderedList)
{
var hand = new PokerHand(shortNotation);
var remainingCards = new List<Card>();
var actualResult = hand.ParseRank(out remainingCards);
Assert.That(actualResult, Is.EqualTo(expectedResult));
Assert.That(remainingCards, Is.EqualTo(PokerHand.CardListFromShortNotation(expectedOrderedList)));
}
static void Main(string[] args)
{
Console.WriteLine("Beginning long-running tests with machine-learning test cases...");
using (var tr = new StreamReader(@"poker-hand-testing.data"))
{
int testNumber = 0;
int failedTests = 0;
string testcase;
while (null != (testcase = tr.ReadLine()))
{
if (!string.IsNullOrWhiteSpace(testcase))
{
++testNumber;
var testcaseArray = testcase.Split(',');
var testcaseData = new int[10];
for (int i = 0; i < 10; i++) testcaseData[i] = int.Parse(testcaseArray[i]);
var hand = BuildPokerHandFromData(testcaseData);
List<Card> orderedCards;
if ((int)hand.ParseRank(out orderedCards) != int.Parse(testcaseArray[10]))
{
++failedTests;
Console.WriteLine("Test case failed: {0}", hand.ToString());
}
}
}
Console.WriteLine("{0} tests executed, {1} tests failed", testNumber, failedTests);
}
Console.WriteLine("Beginning tests from project Euler...");
using (var tr = new StreamReader(@"poker-hand-testing-project-euler.data"))
{
int iWonByPlayer1 = 0;
string testcase;
while (null != (testcase = tr.ReadLine()))
{
if (!string.IsNullOrWhiteSpace(testcase))
{
var testcaseArray = testcase.Split(' ');
var hand1 = new PokerHand(string.Join(" ", testcaseArray.Take(5)));
var hand2 = new PokerHand(string.Join(" ", testcaseArray.Skip(5).Take(5)));
if (hand1.CompareTo(hand2) > 0) ++iWonByPlayer1;
}
}
Console.WriteLine(iWonByPlayer1 == 376 ? "Passed.": "Failed.");
}
}
[TestCase("QH QC 2C 2D 2H", "4S 5D 3H 3S 3D", false)] // Rule: Full-house (FH) beats Taok
// TODO: Four-of-a-Kind (Foak)
// TODO: Straight Flush
public void WhenHandIsCompared(string win, string lose, bool expectTie)
{
var winningHand = new PokerHand(win);
var losingHand = new PokerHand(lose);
if (expectTie)
{
Assert.That(winningHand.CompareTo(losingHand), Is.EqualTo(0));
Assert.That(losingHand.CompareTo(winningHand), Is.EqualTo(0));
}
else
{
Assert.That(winningHand.CompareTo(losingHand), Is.GreaterThan(0));
Assert.That(losingHand.CompareTo(winningHand), Is.LessThan(0));
}
}