feat: Ensure hand comprises unique cards

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/test_models.py b/tests/test_models.py
new file mode 100644
index 0000000..37e9c03
--- /dev/null
+++ b/tests/test_models.py
@@ -0,0 +1,28 @@
+import pytest
+from pydantic import ValidationError
+
+from poker.constants import Suit, Value
+from poker.models import Card, Hand
+
+
+def test_hand_should_contain_unique_cards() -> None:
+    with pytest.raises(ValidationError):
+        _ = Hand(
+            cards=(
+                Card(suit=Suit.CLUBS, value=Value.ACE),
+                Card(suit=Suit.CLUBS, value=Value.TWO),
+                Card(suit=Suit.CLUBS, value=Value.THREE),
+                Card(suit=Suit.CLUBS, value=Value.FOUR),
+                Card(suit=Suit.CLUBS, value=Value.FOUR),
+            )
+        )
+
+    _ = Hand(
+        cards=(
+            Card(suit=Suit.CLUBS, value=Value.ACE),
+            Card(suit=Suit.CLUBS, value=Value.TWO),
+            Card(suit=Suit.CLUBS, value=Value.THREE),
+            Card(suit=Suit.CLUBS, value=Value.FOUR),
+            Card(suit=Suit.CLUBS, value=Value.FIVE),
+        )
+    )