test_stream_emits_deprecation_warning() — anthropic-sdk-python Function Reference

Source Code

tests/api_resources/beta/test_output_format_conversion.py lines 219–243

    def test_stream_emits_deprecation_warning(self, client: Anthropic, respx_mock: MockRouter) -> None:
        """Verify .stream() emits DeprecationWarning when output_format is used."""
        respx_mock.post("/v1/messages?beta=true").mock(
            return_value=httpx.Response(
                200,
                json={
                    "id": "msg_123",
                    "type": "message",
                    "role": "assistant",
                    "model": "claude-sonnet-4-5",
                    "content": [{"text": "test", "type": "text"}],
                    "stop_reason": "end_turn",
                    "usage": {"input_tokens": 10, "output_tokens": 20},
                },
            )
        )

        with pytest.warns(DeprecationWarning, match="output_format.*deprecated.*output_config.format"):
            with client.beta.messages.stream(
                max_tokens=1024,
                messages=[{"role": "user", "content": "Test"}],
                model="claude-sonnet-4-5",
                output_format={"type": "json_schema", "schema": {"type": "string"}},
            ) as stream:  # type: ignore
                pass