fix/various fixes

api/tests/test_session_history.py

@@ -0,0 +1,44 @@
+"""session_history 纯映射测试（ConversationService 的会话层，非 Agent）。"""
+
+import unittest
+from datetime import datetime, timezone
+
+from app.features.conversation.models import Segment
+from app.features.conversation.session_history import segments_to_redis_history
+
+
+class SegmentsToRedisHistoryTest(unittest.TestCase):
+    def test_text_turn_maps_to_human_and_ai(self):
+        seg = Segment(
+            id="s1",
+            conversation_id="c1",
+            transcript_text="我在杭州长大",
+            audio_url=None,
+            created_at=datetime(2024, 1, 2, 3, 4, 5, tzinfo=timezone.utc),
+            agent_response="听起来很温润的城市。",
+        )
+        h = segments_to_redis_history([seg])
+        self.assertEqual(len(h), 2)
+        self.assertEqual(h[0]["role"], "human")
+        self.assertEqual(h[0]["messageType"], "text")
+        self.assertEqual(h[0]["content"], "我在杭州长大")
+        self.assertEqual(h[1]["role"], "ai")
+        self.assertEqual(h[1]["content"], "听起来很温润的城市。")
+
+    def test_voice_segment_sets_voice_session_id(self):
+        seg = Segment(
+            id="s1",
+            conversation_id="c1",
+            transcript_text="嗯",
+            audio_url="audio-segment:vs-9:0",
+            created_at=datetime(2024, 1, 2, tzinfo=timezone.utc),
+            agent_response=None,
+        )
+        h = segments_to_redis_history([seg])
+        self.assertEqual(len(h), 1)
+        self.assertEqual(h[0]["messageType"], "audio")
+        self.assertEqual(h[0]["voiceSessionId"], "vs-9")
+
+
+if __name__ == "__main__":
+    unittest.main()