test_parse_with_nested_pydantic_model() — anthropic-sdk-python Function Reference

Source Code

tests/lib/_parse/test_messages.py lines 62–92

    def test_parse_with_nested_pydantic_model(self, client: Anthropic, respx_mock: MockRouter) -> None:
        """Test sync messages.parse() with nested Pydantic models."""

        def parse_message(c: Anthropic) -> ParsedMessage[OrderDetails]:
            return c.messages.parse(
                model="claude-sonnet-4-5",
                messages=[
                    {
                        "role": "user",
                        "content": "Extract order: 2 Green Tea at $5.50 and 1 Coffee at $3.00. Total $14.",
                    }
                ],
                output_format=OrderDetails,
                max_tokens=1024,
            )

        response = make_snapshot_request(
            parse_message,
            content_snapshot=snapshot(
                '{"model":"claude-sonnet-4-5","id":"msg_01ParseTest002","type":"message","role":"assistant","content":[{"type":"text","text":"{\\"items\\":[{\\"product_name\\":\\"Green Tea\\",\\"price\\":5.5,\\"quantity\\":2},{\\"product_name\\":\\"Coffee\\",\\"price\\":3.0,\\"quantity\\":1}],\\"total\\":14.0}"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":60,"output_tokens":40}}'
            ),
            respx_mock=respx_mock,
            mock_client=client,
            path="/v1/messages",
        )

        assert response.parsed_output is not None
        assert isinstance(response.parsed_output, OrderDetails)
        assert len(response.parsed_output.items) == 2
        assert response.parsed_output.items[0].product_name == "Green Tea"
        assert response.parsed_output.total == 14.0