langchain Architecture Docs
Home / Function/ test_trim_messages_token_counter_shortcut_with_options() — langchain Function Reference

test_trim_messages_token_counter_shortcut_with_options() — langchain Function Reference

Architecture documentation for the test_trim_messages_token_counter_shortcut_with_options() function in test_utils.py from the langchain codebase.

Function python CoreAbstractions MessageSchema

Entity Profile

Dependency Diagram

graph TD
  53b6a430_5261_086a_daa3_a2f4af719a89["test_trim_messages_token_counter_shortcut_with_options()"]
  ea3f8d89_f44b_6738_3cb9_a740a73cfca4["test_utils.py"]
  53b6a430_5261_086a_daa3_a2f4af719a89 -->|defined in| ea3f8d89_f44b_6738_3cb9_a740a73cfca4
  style 53b6a430_5261_086a_daa3_a2f4af719a89 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/messages/test_utils.py lines 728–753

def test_trim_messages_token_counter_shortcut_with_options() -> None:
    """Test that `'approximate'` shortcut works with different trim options."""
    messages = [
        SystemMessage("System instructions"),
        HumanMessage("First human message", id="first"),
        AIMessage("First AI response", id="ai1"),
        HumanMessage("Second human message", id="second"),
        AIMessage("Second AI response", id="ai2"),
    ]
    messages_copy = [m.model_copy(deep=True) for m in messages]

    # Test with various options
    result = trim_messages(
        messages,
        max_tokens=100,
        token_counter="approximate",
        strategy="last",
        include_system=True,
        start_on="human",
    )

    # Should include system message and start on human
    assert len(result) >= 2
    assert isinstance(result[0], SystemMessage)
    assert any(isinstance(msg, HumanMessage) for msg in result[1:])
    assert messages == messages_copy

Domain

Subdomains

Defined In

Source

Frequently Asked Questions

What does test_trim_messages_token_counter_shortcut_with_options() do?
test_trim_messages_token_counter_shortcut_with_options() is a function in the langchain codebase, defined in libs/core/tests/unit_tests/messages/test_utils.py.
Where is test_trim_messages_token_counter_shortcut_with_options() defined?
test_trim_messages_token_counter_shortcut_with_options() is defined in libs/core/tests/unit_tests/messages/test_utils.py at line 728.

Analyze Your Own Codebase

Get architecture documentation, dependency graphs, and domain analysis for your codebase in minutes.

Try Supermodel Free