fix(unittest): fit http llm (#5)

Author: Alchuang22-dev

oxygent/test/unittest/test_http_llm.py

@@ -34,7 +34,7 @@ async def passthrough(self, req: OxyRequest):
         name="http_llm",
         desc="UT HTTP LLM",
         api_key="sk-123",
-        base_url="https://api.fake.com/v1/chat",
+        base_url="https://api.fake.com/v1/chat/completions",
         model_name="gpt-ut",
         llm_params={"temperature": 0.3},
     )
@@ -95,7 +95,7 @@ async def post(self, url, headers=None, json=None):
     assert resp.state is OxyState.COMPLETED
     assert resp.output == "Hi there!"
 
-    assert captured["url"] == "https://api.fake.com/v1/chat"
+    assert captured["url"] == "https://api.fake.com/v1/chat/completions"
     assert captured["headers"]["Authorization"] == "Bearer sk-123"
 
     pay = captured["payload"]