feat: add SQLAlchemy models for Category, CategoryWord, Game, Word

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/unit/test_models.py

@@ -0,0 +1,74 @@
+from models.category import Category, CategoryWord
+from models.game import Game, Word
+
+
+def test_create_category(db_session):
+    cat = Category(name="animals")
+    db_session.add(cat)
+    db_session.commit()
+    assert cat.id is not None
+    assert cat.name == "animals"
+
+
+def test_create_category_word(db_session):
+    cat = Category(name="animals")
+    db_session.add(cat)
+    db_session.flush()
+    word = CategoryWord(category_id=cat.id, word="TIGER")
+    db_session.add(word)
+    db_session.commit()
+    assert word.category_id == cat.id
+    assert word.word == "TIGER"
+
+
+def test_create_game(db_session):
+    cat = Category(name="animals")
+    db_session.add(cat)
+    db_session.flush()
+    game = Game(
+        category_id=cat.id,
+        board_size=10,
+        grid=[["A"] * 10 for _ in range(10)],
+    )
+    db_session.add(game)
+    db_session.commit()
+    assert game.id is not None
+    assert len(game.id) == 36  # UUID
+    assert game.status == "in_progress"
+    assert game.started_at is not None
+    assert game.completed_at is None
+
+
+def test_create_word(db_session):
+    cat = Category(name="animals")
+    db_session.add(cat)
+    db_session.flush()
+    game = Game(category_id=cat.id, board_size=10, grid=[])
+    db_session.add(game)
+    db_session.flush()
+    word = Word(
+        game_id=game.id,
+        text="TIGER",
+        start_row=0,
+        start_col=0,
+        direction="E",
+    )
+    db_session.add(word)
+    db_session.commit()
+    assert word.found is False
+    assert word.found_at is None
+
+
+def test_game_words_relationship(db_session):
+    cat = Category(name="animals")
+    db_session.add(cat)
+    db_session.flush()
+    game = Game(category_id=cat.id, board_size=10, grid=[])
+    db_session.add(game)
+    db_session.flush()
+    w1 = Word(game_id=game.id, text="TIGER", start_row=0, start_col=0, direction="E")
+    w2 = Word(game_id=game.id, text="LION", start_row=1, start_col=0, direction="S")
+    db_session.add_all([w1, w2])
+    db_session.commit()
+    db_session.refresh(game)
+    assert len(game.words) == 2