v0.2 Preview: Construction Plan.

backend/content/test_services.py

@@ -0,0 +1,64 @@
+import pytest
+from rest_framework.exceptions import ValidationError
+
+from accounts.models import User
+from content.models import ContentInteraction, ContentItem, VideoProgress
+from content.services import complete_video
+from progression.models import RewardTransaction, UserAbility
+
+
+@pytest.mark.django_db
+def test_complete_video_重复提交只发放一次能力碎片():
+    user = User.objects.create_user(
+        username="video_user",
+        password="StrongPass_2026",
+        nickname="视频用户",
+    )
+    video = ContentItem.objects.create(
+        slug="video-modeling",
+        title="建模视频",
+        kind=ContentItem.Kind.VIDEO,
+        ability_dimension=ContentItem.Ability.MODELING,
+        duration_seconds=360,
+        is_published=True,
+    )
+
+    first, first_reward = complete_video(user, video)
+    second, second_reward = complete_video(user, video)
+
+    ability = UserAbility.objects.get(
+        user=user,
+        dimension=UserAbility.Dimension.MODELING,
+    )
+    assert first.completed is True
+    assert second.reward_granted is True
+    assert first_reward == {"ability": "modeling", "fragments": 1}
+    assert second_reward is None
+    assert ability.fragments == 1
+    assert RewardTransaction.objects.filter(user=user).count() == 1
+    assert VideoProgress.objects.filter(user=user, content=video).count() == 1
+    assert ContentInteraction.objects.filter(
+        user=user,
+        content=video,
+        action=ContentInteraction.Action.COMPLETE,
+    ).count() == 1
+
+
+@pytest.mark.django_db
+def test_complete_video_非视频内容拒绝完成():
+    user = User.objects.create_user(
+        username="knowledge_user",
+        password="StrongPass_2026",
+        nickname="知识用户",
+    )
+    content = ContentItem.objects.create(
+        slug="knowledge-item",
+        title="知识卡片",
+        kind=ContentItem.Kind.KNOWLEDGE,
+        is_published=True,
+    )
+
+    with pytest.raises(ValidationError, match="只有视频"):
+        complete_video(user, content)
+
+    assert RewardTransaction.objects.count() == 0