test_sequential_overlapping_inputs() — langchain Function Reference

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

Function python LangChainCore ApiManagement

Entity Profile

LangChainCore→ ApiManagement→ test_sequential_overlapping_inputs() — langchain Function Reference

Dependency Diagram

graph TD
  bfbedca0_5299_d6c3_7455_57f3283619aa["test_sequential_overlapping_inputs()"]
  0021bb47_51ab_bafd_26b4_c2849000554a["test_sequential.py"]
  bfbedca0_5299_d6c3_7455_57f3283619aa -->|defined in| 0021bb47_51ab_bafd_26b4_c2849000554a
  style bfbedca0_5299_d6c3_7455_57f3283619aa fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/tests/unit_tests/chains/test_sequential.py lines 187–195

def test_sequential_overlapping_inputs() -> None:
    """Test error is raised when input variables are overlapping."""
    chain_1 = FakeChain(input_variables=["foo"], output_variables=["bar", "test"])
    chain_2 = FakeChain(input_variables=["bar"], output_variables=["baz"])
    with pytest.raises(
        ValueError, match="Value error, Chain returned keys that already exist"
    ):
        # "test" is specified as an input, but also is an output of one step
        SequentialChain(chains=[chain_1, chain_2], input_variables=["foo", "test"])  # type: ignore[call-arg]