test_simple_sequential_functionality() — langchain Function Reference

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

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ test_simple_sequential_functionality() — langchain Function Reference

Dependency Diagram

graph TD
  e22bc31a_8b34_ff23_0a96_5e311d4abfa1["test_simple_sequential_functionality()"]
  0021bb47_51ab_bafd_26b4_c2849000554a["test_sequential.py"]
  e22bc31a_8b34_ff23_0a96_5e311d4abfa1 -->|defined in| 0021bb47_51ab_bafd_26b4_c2849000554a
  style e22bc31a_8b34_ff23_0a96_5e311d4abfa1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/tests/unit_tests/chains/test_sequential.py lines 198–205

def test_simple_sequential_functionality() -> None:
    """Test simple sequential functionality."""
    chain_1 = FakeChain(input_variables=["foo"], output_variables=["bar"])
    chain_2 = FakeChain(input_variables=["bar"], output_variables=["baz"])
    chain = SimpleSequentialChain(chains=[chain_1, chain_2])
    output = chain({"input": "123"})
    expected_output = {"output": "123foofoo", "input": "123"}
    assert output == expected_output