fixed a bug:translate maybe timeout

sentence_api/tests/test_api.py

@@ -268,6 +268,53 @@ def test_subtitle_translation_uses_full_document_and_is_cached(tmp_path, monkeyp
     assert requested[0][0] == [(0, "Hello."), (1, "Nice to meet you.")]
 
 
+def test_subtitle_translation_is_shared_with_other_users(tmp_path, monkeypatch):
+    client = make_client(tmp_path)
+    _ready_video(client.app.state.video_repository)
+    requested = []
+
+    def translate_sentences(sentences, **kwargs):
+        requested.append((sentences, kwargs))
+        return {index: f"中文{index}" for index, _text in sentences}
+
+    class StubAITutor:
+        pass
+
+    stub = StubAITutor()
+    stub.translate_sentences = translate_sentences
+    monkeypatch.setattr(client.app.state, "ai_tutor", stub)
+
+    first = client.post(f"/api/v1/videos/{VIDEO_HASH}/subtitle-translation")
+    assert first.status_code == 200, first.text
+
+    stored = client.get(f"/api/v1/videos/{VIDEO_HASH}/subtitle-translation")
+    assert stored.status_code == 200
+    assert stored.json() == first.json()
+
+    other = TestClient(client.app)
+    signup = other.post(
+        "/api/v1/auth/register",
+        json={"username": "viewer2", "password": "password-123"},
+    )
+    assert signup.status_code == 201, signup.text
+    other.headers.update({"Authorization": f"Bearer {signup.json()['token']}"})
+
+    shared = other.get(f"/api/v1/videos/{VIDEO_HASH}/subtitle-translation")
+    assert shared.status_code == 200
+    assert shared.json()["translations"] == [
+        {"index": 0, "zh_text": "中文0"},
+        {"index": 1, "zh_text": "中文1"},
+    ]
+    boundaries = other.get(f"/api/v1/videos/{VIDEO_HASH}/sentence-boundaries")
+    assert boundaries.status_code == 200
+    assert [item["zh_text"] for item in boundaries.json()["sentences"]] == ["中文0", "中文1"]
+
+    reused = other.post(f"/api/v1/videos/{VIDEO_HASH}/subtitle-translation")
+    assert reused.status_code == 200
+    assert reused.json() == first.json()
+    assert len(requested) == 1
+
+
 def test_oss_video_url_is_used_for_catalog_and_content(tmp_path):
     index_path = tmp_path / "boundaries.json"
     index_path.write_text("{}", encoding="utf-8")