test_transform_chain_bad_inputs() — langchain Function Reference

Architecture documentation for the test_transform_chain_bad_inputs() function in test_transform.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ test_transform_chain_bad_inputs() — langchain Function Reference

Dependency Diagram

graph TD
  7976e32f_1dcf_a481_a20f_658f1a1a5ad3["test_transform_chain_bad_inputs()"]
  ecc33835_be56_676c_ce64_c4e504342fbf["test_transform.py"]
  7976e32f_1dcf_a481_a20f_658f1a1a5ad3 -->|defined in| ecc33835_be56_676c_ce64_c4e504342fbf
  style 7976e32f_1dcf_a481_a20f_658f1a1a5ad3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/tests/unit_tests/chains/test_transform.py lines 32–43

def test_transform_chain_bad_inputs() -> None:
    """Test basic transform chain."""
    transform_chain = TransformChain(
        input_variables=["first_name", "last_name"],
        output_variables=["greeting"],
        transform=dummy_transform,
    )
    input_dict = {"name": "Leroy", "last_name": "Jenkins"}
    with pytest.raises(
        ValueError, match=re.escape("Missing some input keys: {'first_name'}")
    ):
        _ = transform_chain(input_dict)