feat: add unified contest pool and realtime game modes

backend/contest/test_services.py

@@ -5,10 +5,12 @@ from django.utils import timezone
 from rest_framework.exceptions import ValidationError
 
 from accounts.models import User
+from contest.game_services import submit_game
 from contest.models import (
     Contest,
     ContestAttempt,
     ContestQuestion,
+    MathGameAttempt,
     Question,
     QuestionVersion,
     RatingHistory,
@@ -17,6 +19,7 @@ from contest.models import (
 from contest.services import (
     cancel_waiting_match,
     create_challenge,
+    finalize_game_match,
     finalize_match,
     find_match,
     join_challenge,
@@ -190,6 +193,21 @@ def test_find_match_同分玩家配对并由_finalize_match_唯一结算_rating(
         track=Question.Track.STANDARD,
         status=Contest.Status.PUBLISHED,
     )
+    question = Question.objects.create(
+        slug="realtime-rating-question",
+        track=Question.Track.STANDARD,
+    )
+    version = QuestionVersion.objects.create(
+        question=question,
+        version=1,
+        prompt="1 + 1",
+        answer="2",
+    )
+    ContestQuestion.objects.create(
+        contest=contest,
+        question_version=version,
+        order=1,
+    )
 
     waiting = find_match(first, contest)
     active = find_match(second, contest)
@@ -360,3 +378,104 @@ def test_challenge_owner_可取消等待中的联机码(realtime_contest):
             ),
             waiting.challenge_code,
         )
+
+
+@pytest.mark.django_db
+def test_practice_attempt_从完整题池保存随机快照(user):
+    contest = Contest.objects.create(
+        slug="random-practice",
+        title="随机练习",
+        kind=Contest.Kind.PRACTICE,
+        track=Question.Track.STANDARD,
+        status=Contest.Status.PUBLISHED,
+    )
+    for index in range(12):
+        question = Question.objects.create(
+            slug=f"random-question-{index}",
+            track=Question.Track.STANDARD,
+        )
+        version = QuestionVersion.objects.create(
+            question=question,
+            version=1,
+            prompt=f"{index} + 1",
+            answer=str(index + 1),
+        )
+        ContestQuestion.objects.create(
+            contest=contest,
+            question_version=version,
+            order=index + 1,
+        )
+
+    payloads = [start_attempt(user, contest) for _ in range(8)]
+    snapshots = {
+        tuple(
+            ContestAttempt.objects.get(id=payload["attempt_id"]).question_order
+        )
+        for payload in payloads
+    }
+
+    assert all(len(payload["questions"]) == 8 for payload in payloads)
+    assert len(snapshots) > 1
+
+
+@pytest.mark.django_db
+def test_twenty_four_realtime_共享题面按完成时间结算_rating(realtime_contest):
+    first = User.objects.create_user(
+        username="game_match_one",
+        password="StrongPass_2026",
+        nickname="竞速玩家一",
+    )
+    second = User.objects.create_user(
+        username="game_match_two",
+        password="StrongPass_2026",
+        nickname="竞速玩家二",
+    )
+    waiting = create_challenge(
+        first,
+        realtime_contest,
+        RealtimeMatch.GameKind.TWENTY_FOUR,
+    )
+    match = join_challenge(second, waiting.challenge_code)
+    attempts = {
+        attempt.user_id: attempt for attempt in match.game_attempts.all()
+    }
+    first_attempt = attempts[first.id]
+    second_attempt = attempts[second.id]
+    assert first_attempt.puzzle == second_attempt.puzzle
+    assert first_attempt.solution == second_attempt.solution
+
+    solutions = {
+        (2, 3, 4, 9): "(2/3)*4*9",
+        (3, 5, 7, 13): "(7+5*13)/3",
+        (4, 7, 8, 8): "8*(4+7-8)",
+    }
+    expression = solutions[tuple(sorted(first_attempt.puzzle["numbers"]))]
+    MathGameAttempt.objects.filter(id=first_attempt.id).update(
+        started_at=timezone.now() - timedelta(seconds=2)
+    )
+    MathGameAttempt.objects.filter(id=second_attempt.id).update(
+        started_at=timezone.now() - timedelta(seconds=5)
+    )
+    submit_game(
+        first,
+        first_attempt.id,
+        {"expression": expression},
+        "game-race-first",
+    )
+    assert finalize_game_match(match.id).status == RealtimeMatch.Status.ACTIVE
+    submit_game(
+        second,
+        second_attempt.id,
+        {"expression": expression},
+        "game-race-second",
+    )
+
+    completed = finalize_game_match(match.id)
+    first.refresh_from_db()
+    second.refresh_from_db()
+
+    assert completed.status == RealtimeMatch.Status.COMPLETED
+    assert completed.winner_id == first.id
+    assert first.rating == 1016
+    assert second.rating == 984
+    assert RatingHistory.objects.filter(match=match).count() == 2