test_single_item() — langchain Function Reference

Architecture documentation for the test_single_item() function in test_list_parser.py from the langchain codebase.

Function python CoreAbstractions RunnableInterface

Entity Profile

CoreAbstractions→ RunnableInterface→ test_single_item() — langchain Function Reference

Dependency Diagram

graph TD
  eb0cddea_d4c0_a478_593e_8857948c8627["test_single_item()"]
  8ae9f33a_614d_1533_e9a3_2a17ed09b1eb["test_list_parser.py"]
  eb0cddea_d4c0_a478_593e_8857948c8627 -->|defined in| 8ae9f33a_614d_1533_e9a3_2a17ed09b1eb
  style eb0cddea_d4c0_a478_593e_8857948c8627 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/output_parsers/test_list_parser.py lines 12–27

def test_single_item() -> None:
    """Test that a string with a single item is parsed to a list with that item."""
    parser = CommaSeparatedListOutputParser()
    text = "foo"
    expected = ["foo"]

    assert parser.parse(text) == expected
    assert add(parser.transform(t for t in text)) == expected
    assert list(parser.transform(t for t in text)) == [[a] for a in expected]
    assert list(parser.transform(t for t in text.splitlines(keepends=True))) == [
        [a] for a in expected
    ]
    assert list(
        parser.transform(" " + t if i > 0 else t for i, t in enumerate(text.split(" ")))
    ) == [[a] for a in expected]
    assert list(parser.transform(iter([text]))) == [[a] for a in expected]