1  from unittest.mock import MagicMock, patch
 2  
 3  from run_agent import AIAgent
 4  
 5  
 6  def _make_copilot_agent():
 7      with patch("run_agent.OpenAI") as mock_openai:
 8          mock_openai.return_value = MagicMock()
 9          agent = AIAgent(
10              api_key="gh-token",
11              base_url="https://api.githubcopilot.com",
12              provider="copilot",
13              model="gpt-5.4",
14              quiet_mode=True,
15              skip_context_files=True,
16              skip_memory=True,
17          )
18      return agent
19  
20  
21  def test_request_client_adds_copilot_vision_header_for_native_image_payload():
22      agent = _make_copilot_agent()
23      built_kwargs = []
24  
25      def fake_create(kwargs, *, reason, shared):
26          built_kwargs.append(dict(kwargs))
27          return MagicMock()
28  
29      api_kwargs = {
30          "model": "gpt-5.4",
31          "messages": [
32              {
33                  "role": "user",
34                  "content": [
35                      {"type": "text", "text": "What is in this image?"},
36                      {"type": "image_url", "image_url": {"url": "data:image/png;base64,abc"}},
37                  ],
38              }
39          ],
40      }
41  
42      agent.client = object()
43      with patch.object(agent, "_is_openai_client_closed", return_value=False), patch.object(
44          agent, "_create_openai_client", side_effect=fake_create
45      ):
46          agent._create_request_openai_client(reason="test", api_kwargs=api_kwargs)
47  
48      headers = built_kwargs[-1]["default_headers"]
49      assert headers["Copilot-Vision-Request"] == "true"
50  
51  
52  def test_request_client_leaves_copilot_text_requests_without_vision_header():
53      agent = _make_copilot_agent()
54      built_kwargs = []
55  
56      def fake_create(kwargs, *, reason, shared):
57          built_kwargs.append(dict(kwargs))
58          return MagicMock()
59  
60      api_kwargs = {"model": "gpt-5.4", "messages": [{"role": "user", "content": "hello"}]}
61  
62      agent.client = object()
63      with patch.object(agent, "_is_openai_client_closed", return_value=False), patch.object(
64          agent, "_create_openai_client", side_effect=fake_create
65      ):
66          agent._create_request_openai_client(reason="test", api_kwargs=api_kwargs)
67  
68      headers = built_kwargs[-1]["default_headers"]
69      assert "Copilot-Vision-Request" not in headers
70  
71  
72  def test_request_client_does_not_add_vision_header_after_non_vision_fallback():
73      agent = _make_copilot_agent()
74      built_kwargs = []
75  
76      def fake_create(kwargs, *, reason, shared):
77          built_kwargs.append(dict(kwargs))
78          return MagicMock()
79  
80      # This is the shape after _prepare_messages_for_non_vision_model has
81      # replaced image parts with text, so Copilot should not get the vision route.
82      api_kwargs = {
83          "model": "gpt-5.4",
84          "messages": [
85              {"role": "user", "content": "[user image: a dog]\n\nWhat is in this image?"}
86          ],
87      }
88  
89      agent.client = object()
90      with patch.object(agent, "_is_openai_client_closed", return_value=False), patch.object(
91          agent, "_create_openai_client", side_effect=fake_create
92      ):
93          agent._create_request_openai_client(reason="test", api_kwargs=api_kwargs)
94  
95      headers = built_kwargs[-1]["default_headers"]
96      assert "Copilot-Vision-Request" not in headers