Feat/add backend tests

backend/pyproject.toml

@@ -24,7 +24,9 @@ dev-dependencies = [
     "pytest>=8.3.4",
     "coverage>=7.8.0",
     "ruff>=0.9.5",
-    "pre-commit>=4.2.0"
+    "pre-commit>=4.2.0",
+    "pytest-cov>=6.1.1",
+    "pytest-asyncio>=0.26.0",
 ]
 
 [tool.hatch.build.targets.wheel]

backend/src/flashcards/services.py

@@ -314,23 +314,6 @@ def get_practice_cards(
     return practice_cards, count
 
 
-def get_next_card(
-    session: Session, practice_session_id: uuid.UUID
-) -> tuple[Card, PracticeCard] | None:
-    statement = (
-        select(PracticeCard, Card)
-        .join(Card, PracticeCard.card_id == Card.id)
-        .where(
-            PracticeCard.session_id == practice_session_id,
-            PracticeCard.is_practiced.is_not(True),
-        )
-        .limit(1)
-    )
-    result = session.exec(statement).first()
-    if result:
-        return result[1], result[0]
-
-
 def get_practice_card(
     session: Session,
     practice_session_id: uuid.UUID,
@@ -373,12 +356,6 @@ def record_practice_card_result(
     return practice_card
 
 
-def get_session_statistics(
-    session: Session, practice_session_id: uuid.UUID
-) -> PracticeSession:
-    return session.get(PracticeSession, practice_session_id)
-
-
 def get_card_by_id(session: Session, card_id: uuid.UUID) -> Card | None:
     statement = select(Card).where(Card.id == card_id)
     return session.exec(statement).first()