test_typed_init() — langchain Function Reference

Architecture documentation for the test_typed_init() function in test_messages.py from the langchain codebase.

Function python CoreAbstractions MessageSchema

Entity Profile

CoreAbstractions→ MessageSchema→ test_typed_init() — langchain Function Reference

Dependency Diagram

graph TD
  41c9978f_004c_bb0c_d048_3f0d7cf77c57["test_typed_init()"]
  3f9e7dd9_29c9_13fc_d3d8_a14d452f0d26["test_messages.py"]
  41c9978f_004c_bb0c_d048_3f0d7cf77c57 -->|defined in| 3f9e7dd9_29c9_13fc_d3d8_a14d452f0d26
  style 41c9978f_004c_bb0c_d048_3f0d7cf77c57 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/test_messages.py lines 1277–1314

def test_typed_init() -> None:
    ai_message = AIMessage(content_blocks=[{"type": "text", "text": "Hello"}])
    assert ai_message.content == [{"type": "text", "text": "Hello"}]
    assert ai_message.content_blocks == ai_message.content

    human_message = HumanMessage(content_blocks=[{"type": "text", "text": "Hello"}])
    assert human_message.content == [{"type": "text", "text": "Hello"}]
    assert human_message.content_blocks == human_message.content

    system_message = SystemMessage(content_blocks=[{"type": "text", "text": "Hello"}])
    assert system_message.content == [{"type": "text", "text": "Hello"}]
    assert system_message.content_blocks == system_message.content

    tool_message = ToolMessage(
        content_blocks=[{"type": "text", "text": "Hello"}],
        tool_call_id="abc123",
    )
    assert tool_message.content == [{"type": "text", "text": "Hello"}]
    assert tool_message.content_blocks == tool_message.content

    for message_class in [AIMessage, HumanMessage, SystemMessage]:
        message = message_class("Hello")
        assert message.content == "Hello"
        assert message.content_blocks == [{"type": "text", "text": "Hello"}]

        message = message_class(content="Hello")
        assert message.content == "Hello"
        assert message.content_blocks == [{"type": "text", "text": "Hello"}]

    # Test we get type errors for malformed blocks (type checker will complain if
    # below type-ignores are unused).
    _ = AIMessage(content_blocks=[{"type": "text", "bad": "Hello"}])  # type: ignore[list-item]
    _ = HumanMessage(content_blocks=[{"type": "text", "bad": "Hello"}])  # type: ignore[list-item]
    _ = SystemMessage(content_blocks=[{"type": "text", "bad": "Hello"}])  # type: ignore[list-item]
    _ = ToolMessage(
        content_blocks=[{"type": "text", "bad": "Hello"}],  # type: ignore[list-item]
        tool_call_id="abc123",
    )