test_sequential_usage_single_inputs() — langchain Function Reference

Architecture documentation for the test_sequential_usage_single_inputs() function in test_sequential.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

LangChainCore→ MessageInterface→ test_sequential_usage_single_inputs() — langchain Function Reference

Dependency Diagram

graph TD
  ee8993a5_c44e_5acf_de3b_931fbd475b5e["test_sequential_usage_single_inputs()"]
  0021bb47_51ab_bafd_26b4_c2849000554a["test_sequential.py"]
  ee8993a5_c44e_5acf_de3b_931fbd475b5e -->|defined in| 0021bb47_51ab_bafd_26b4_c2849000554a
  style ee8993a5_c44e_5acf_de3b_931fbd475b5e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/tests/unit_tests/chains/test_sequential.py lines 60–67

def test_sequential_usage_single_inputs() -> None:
    """Test sequential on single input chains."""
    chain_1 = FakeChain(input_variables=["foo"], output_variables=["bar"])
    chain_2 = FakeChain(input_variables=["bar"], output_variables=["baz"])
    chain = SequentialChain(chains=[chain_1, chain_2], input_variables=["foo"])  # type: ignore[call-arg]
    output = chain({"foo": "123"})
    expected_output = {"baz": "123foofoo", "foo": "123"}
    assert output == expected_output