test__merge_messages() — langchain Function Reference

Architecture documentation for the test__merge_messages() function in test_chat_models.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

LangChainCore→ LanguageModelBase→ test__merge_messages() — langchain Function Reference

Dependency Diagram

graph TD
  7aba916a_ea05_b3b0_40b4_9d3063ec3fb9["test__merge_messages()"]
  18428dc5_a41b_90c6_88ad_615296ee3311["test_chat_models.py"]
  7aba916a_ea05_b3b0_40b4_9d3063ec3fb9 -->|defined in| 18428dc5_a41b_90c6_88ad_615296ee3311
  style 7aba916a_ea05_b3b0_40b4_9d3063ec3fb9 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/partners/anthropic/tests/unit_tests/test_chat_models.py lines 255–393

def test__merge_messages() -> None:
    messages = [
        SystemMessage("foo"),  # type: ignore[misc]
        HumanMessage("bar"),  # type: ignore[misc]
        AIMessage(  # type: ignore[misc]
            [
                {"text": "baz", "type": "text"},
                {
                    "tool_input": {"a": "b"},
                    "type": "tool_use",
                    "id": "1",
                    "text": None,
                    "name": "buz",
                },
                {"text": "baz", "type": "text"},
                {
                    "tool_input": {"a": "c"},
                    "type": "tool_use",
                    "id": "2",
                    "text": None,
                    "name": "blah",
                },
                {
                    "tool_input": {"a": "c"},
                    "type": "tool_use",
                    "id": "3",
                    "text": None,
                    "name": "blah",
                },
            ],
        ),
        ToolMessage("buz output", tool_call_id="1", status="error"),  # type: ignore[misc]
        ToolMessage(
            content=[
                {
                    "type": "image",
                    "source": {
                        "type": "base64",
                        "media_type": "image/jpeg",
                        "data": "fake_image_data",
                    },
                },
            ],
            tool_call_id="2",
        ),  # type: ignore[misc]
        ToolMessage([], tool_call_id="3"),  # type: ignore[misc]
        HumanMessage("next thing"),  # type: ignore[misc]
    ]
    expected = [
        SystemMessage("foo"),  # type: ignore[misc]
        HumanMessage("bar"),  # type: ignore[misc]
        AIMessage(  # type: ignore[misc]
            [
                {"text": "baz", "type": "text"},
                {
                    "tool_input": {"a": "b"},
                    "type": "tool_use",
                    "id": "1",
                    "text": None,
                    "name": "buz",
                },
                {"text": "baz", "type": "text"},
                {
                    "tool_input": {"a": "c"},
                    "type": "tool_use",
                    "id": "2",
                    "text": None,
                    "name": "blah",
                },
                {
                    "tool_input": {"a": "c"},
                    "type": "tool_use",
                    "id": "3",
                    "text": None,
                    "name": "blah",
                },
            ],
        ),
        HumanMessage(  # type: ignore[misc]
            [
                {