test(openai-agents): Remove test for unreachable state (#5584)

The OpenAI API always returns the response model for both Completions and Responses APIs. The test previously mocked a Responses object without a response model, which cannot occur when using the Responses API with `openai-agents`.

Author: alexander-alderman-webb

tests/integrations/openai_agents/test_openai_agents.py

@@ -2513,75 +2513,6 @@ def calculator(a: int, b: int) -> int:
     assert invoke_agent_span["data"]["gen_ai.usage.output_tokens.reasoning"] == 3
 
 
-@pytest.mark.asyncio
-async def test_response_model_not_set_when_unavailable(
-    sentry_init, capture_events, test_agent
-):
-    """
-    Test that response model is not set if the API response doesn't have a model field.
-    The request model should still be set correctly.
-    """
-
-    with patch.dict(os.environ, {"OPENAI_API_KEY": "test-key"}):
-        with patch(
-            "agents.models.openai_responses.OpenAIResponsesModel._fetch_response"
-        ) as mock_fetch_response:
-            # Create a mock response without a model field
-            mock_response = MagicMock()
-            mock_response.model = None  # No model in response
-            mock_response.id = "resp_123"
-            mock_response.output = [
-                ResponseOutputMessage(
-                    id="msg_123",
-                    type="message",
-                    status="completed",
-                    content=[
-                        ResponseOutputText(
-                            text="Response without model field",
-                            type="output_text",
-                            annotations=[],
-                        )
-                    ],
-                    role="assistant",
-                )
-            ]
-            mock_response.usage = MagicMock()
-            mock_response.usage.input_tokens = 10
-            mock_response.usage.output_tokens = 20
-            mock_response.usage.total_tokens = 30
-            mock_response.usage.input_tokens_details = InputTokensDetails(
-                cached_tokens=0
-            )
-            mock_response.usage.output_tokens_details = OutputTokensDetails(
-                reasoning_tokens=0
-            )
-
-            mock_fetch_response.return_value = mock_response
-
-            sentry_init(
-                integrations=[OpenAIAgentsIntegration()],
-                traces_sample_rate=1.0,
-            )
-
-            events = capture_events()
-
-            result = await agents.Runner.run(
-                test_agent, "Test input", run_config=test_run_config
-            )
-
-            assert result is not None
-
-    (transaction,) = events
-    spans = transaction["spans"]
-    _, ai_client_span = spans
-
-    # Response model should NOT be set when API doesn't return it
-    assert "gen_ai.response.model" not in ai_client_span["data"]
-    # But request model should still be set
-    assert "gen_ai.request.model" in ai_client_span["data"]
-    assert ai_client_span["data"]["gen_ai.request.model"] == "gpt-4"
-
-
 @pytest.mark.asyncio
 async def test_invoke_agent_span_includes_response_model(
     sentry_init, capture_events, test_agent