task4

tests/shortdeck/test_hand_ranking.py

@@ -0,0 +1,177 @@
+"""
+Tests for Short Deck HandRanking and HandType classes
+"""
+
+import pytest
+from poker.card import Card, ShortDeckRank, Suit  # 使用统一的Card类
+from shortdeck.hand_ranking import ShortDeckHandRanking, ShortDeckHandType
+
+
+class TestShortDeckHandType:
+    """Test cases for ShortDeckHandType enum"""
+    
+    def test_hand_type_values(self):
+        """Test hand type strength values - Flush beats Full House in Short Deck"""
+        assert ShortDeckHandType.HIGH_CARD.strength == 1
+        assert ShortDeckHandType.ONE_PAIR.strength == 2
+        assert ShortDeckHandType.TWO_PAIR.strength == 3
+        assert ShortDeckHandType.THREE_OF_A_KIND.strength == 4
+        assert ShortDeckHandType.STRAIGHT.strength == 5
+        assert ShortDeckHandType.FULL_HOUSE.strength == 6
+        assert ShortDeckHandType.FLUSH.strength == 7  # Higher than Full House!
+        assert ShortDeckHandType.FOUR_OF_A_KIND.strength == 8
+        assert ShortDeckHandType.STRAIGHT_FLUSH.strength == 9
+        assert ShortDeckHandType.ROYAL_FLUSH.strength == 10
+    
+    def test_hand_type_names(self):
+        """Test hand type names"""
+        assert ShortDeckHandType.HIGH_CARD.type_name == "High Card"
+        assert ShortDeckHandType.FOUR_OF_A_KIND.type_name == "Four of a Kind"
+        assert ShortDeckHandType.ROYAL_FLUSH.type_name == "Royal Flush"
+        assert ShortDeckHandType.FLUSH.type_name == "Flush"
+        assert ShortDeckHandType.FULL_HOUSE.type_name == "Full House"
+    
+    def test_hand_type_string_representation(self):
+        """Test string representation of hand types"""
+        assert str(ShortDeckHandType.HIGH_CARD) == "High Card"
+        assert str(ShortDeckHandType.ROYAL_FLUSH) == "Royal Flush"
+    
+    def test_hand_type_comparison(self):
+        """Test hand type comparison - KEY: Flush > Full House in Short Deck"""
+        assert ShortDeckHandType.HIGH_CARD < ShortDeckHandType.ONE_PAIR
+        assert ShortDeckHandType.FLUSH > ShortDeckHandType.FULL_HOUSE  # Short Deck rule!
+        assert ShortDeckHandType.ROYAL_FLUSH >= ShortDeckHandType.STRAIGHT_FLUSH
+        assert ShortDeckHandType.TWO_PAIR <= ShortDeckHandType.THREE_OF_A_KIND
+        assert ShortDeckHandType.STRAIGHT < ShortDeckHandType.FULL_HOUSE
+        assert ShortDeckHandType.FULL_HOUSE < ShortDeckHandType.FLUSH
+    
+    def test_hand_type_equality(self):
+        """Test hand type equality"""
+        assert ShortDeckHandType.FLUSH == ShortDeckHandType.FLUSH
+        assert ShortDeckHandType.FLUSH != ShortDeckHandType.FULL_HOUSE
+
+
+class TestShortDeckHandRanking:
+    """Test cases for ShortDeckHandRanking class"""
+    
+    def test_hand_ranking_creation(self):
+        """Test hand ranking creation"""
+        cards = [
+            Card(ShortDeckRank.ACE, Suit.SPADES),
+            Card(ShortDeckRank.ACE, Suit.HEARTS),
+            Card(ShortDeckRank.ACE, Suit.DIAMONDS),
+            Card(ShortDeckRank.ACE, Suit.CLUBS),
+            Card(ShortDeckRank.KING, Suit.SPADES)
+        ]
+        ranking = ShortDeckHandRanking(ShortDeckHandType.FOUR_OF_A_KIND, [ShortDeckRank.ACE, ShortDeckRank.KING], cards)
+        
+        assert ranking.hand_type == ShortDeckHandType.FOUR_OF_A_KIND
+        assert ranking.key_ranks == [ShortDeckRank.ACE, ShortDeckRank.KING]
+        assert ranking.cards == cards
+    
+    def test_quad_string_representation(self):
+        """Test string representation for four of a kind"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.FOUR_OF_A_KIND, [ShortDeckRank.ACE, ShortDeckRank.KING], cards)
+        assert str(ranking) == "Quad(A)"
+    
+    def test_full_house_string_representation(self):
+        """Test string representation for full house"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.FULL_HOUSE, [ShortDeckRank.ACE, ShortDeckRank.KING], cards)
+        assert str(ranking) == "Full House(A over K)"
+    
+    def test_flush_string_representation(self):
+        """Test string representation for flush"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.FLUSH, [ShortDeckRank.ACE], cards)
+        assert str(ranking) == "Flush(A high)"
+    
+    def test_straight_string_representation(self):
+        """Test string representation for straight"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.STRAIGHT, [ShortDeckRank.ACE], cards)
+        assert str(ranking) == "Straight(A high)"
+    
+    def test_straight_flush_string_representation(self):
+        """Test string representation for straight flush"""
+        cards = [Card(ShortDeckRank.KING, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.STRAIGHT_FLUSH, [ShortDeckRank.KING], cards)
+        assert str(ranking) == "Straight Flush(K high)"
+    
+    def test_royal_flush_string_representation(self):
+        """Test string representation for royal flush"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        
+        # Direct royal flush
+        ranking1 = ShortDeckHandRanking(ShortDeckHandType.ROYAL_FLUSH, [ShortDeckRank.ACE], cards)
+        assert str(ranking1) == "Royal Flush"
+        
+        # Straight flush with Ace high should also show as Royal Flush
+        ranking2 = ShortDeckHandRanking(ShortDeckHandType.STRAIGHT_FLUSH, [ShortDeckRank.ACE], cards)
+        assert str(ranking2) == "Royal Flush"
+    
+    def test_three_of_a_kind_string_representation(self):
+        """Test string representation for three of a kind"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.THREE_OF_A_KIND, [ShortDeckRank.ACE], cards)
+        assert str(ranking) == "Three of a Kind(A)"
+    
+    def test_two_pair_string_representation(self):
+        """Test string representation for two pair"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.TWO_PAIR, [ShortDeckRank.ACE, ShortDeckRank.KING], cards)
+        assert str(ranking) == "Two Pair(A and K)"
+    
+    def test_one_pair_string_representation(self):
+        """Test string representation for one pair"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.ONE_PAIR, [ShortDeckRank.ACE], cards)
+        assert str(ranking) == "Pair(A)"
+    
+    def test_high_card_string_representation(self):
+        """Test string representation for high card"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        ranking = ShortDeckHandRanking(ShortDeckHandType.HIGH_CARD, [ShortDeckRank.ACE], cards)
+        assert str(ranking) == "High Card(A)"
+    
+    def test_hand_ranking_comparison(self):
+        """Test hand ranking comparison"""
+        # Create some test cards
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        
+        # Create different rankings
+        quad_aces = ShortDeckHandRanking(ShortDeckHandType.FOUR_OF_A_KIND, [ShortDeckRank.ACE], cards)
+        flush_ace = ShortDeckHandRanking(ShortDeckHandType.FLUSH, [ShortDeckRank.ACE], cards)
+        full_house = ShortDeckHandRanking(ShortDeckHandType.FULL_HOUSE, [ShortDeckRank.ACE, ShortDeckRank.KING], cards)
+        straight_ace = ShortDeckHandRanking(ShortDeckHandType.STRAIGHT, [ShortDeckRank.ACE], cards)
+        
+        # Test Short Deck specific comparison: Flush > Full House
+        assert flush_ace > full_house
+        assert full_house < flush_ace
+        
+        # Test other comparisons
+        assert quad_aces > flush_ace
+        assert straight_ace < full_house
+    
+    def test_hand_ranking_equality(self):
+        """Test hand ranking equality"""
+        cards1 = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        cards2 = [Card(ShortDeckRank.KING, Suit.HEARTS)] * 5
+        
+        ranking1 = ShortDeckHandRanking(ShortDeckHandType.FLUSH, [ShortDeckRank.ACE], cards1)
+        ranking2 = ShortDeckHandRanking(ShortDeckHandType.FLUSH, [ShortDeckRank.ACE], cards2)
+        ranking3 = ShortDeckHandRanking(ShortDeckHandType.FLUSH, [ShortDeckRank.KING], cards2)
+        
+        assert ranking1 == ranking2  # Same hand type and key ranks
+        assert ranking1 != ranking3  # Different key ranks
+    
+    def test_same_type_different_ranks(self):
+        """Test comparison of same hand type with different key ranks"""
+        cards = [Card(ShortDeckRank.ACE, Suit.SPADES)] * 5
+        
+        ace_high = ShortDeckHandRanking(ShortDeckHandType.HIGH_CARD, [ShortDeckRank.ACE], cards)
+        king_high = ShortDeckHandRanking(ShortDeckHandType.HIGH_CARD, [ShortDeckRank.KING], cards)
+        
+        assert ace_high > king_high
+        assert king_high < ace_high