test_required_dependencies() — langchain Function Reference

Architecture documentation for the test_required_dependencies() function in test_dependencies.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

LangChainCore→ MessageInterface→ test_required_dependencies() — langchain Function Reference

Dependency Diagram

graph TD
  fa7ff5e8_2821_9967_0f8c_ff570bd2ae29["test_required_dependencies()"]
  19ba0025_6dcf_3502_80e9_ed75a1ebe912["test_dependencies.py"]
  fa7ff5e8_2821_9967_0f8c_ff570bd2ae29 -->|defined in| 19ba0025_6dcf_3502_80e9_ed75a1ebe912
  style fa7ff5e8_2821_9967_0f8c_ff570bd2ae29 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/tests/unit_tests/test_dependencies.py lines 23–44

def test_required_dependencies(uv_conf: Mapping[str, Any]) -> None:
    """A test that checks if a new non-optional dependency is being introduced.

    If this test is triggered, it means that a contributor is trying to introduce a new
    required dependency. This should be avoided in most situations.
    """
    # Get the dependencies from the [tool.poetry.dependencies] section
    dependencies = uv_conf["project"]["dependencies"]
    required_dependencies = {Requirement(dep).name for dep in dependencies}

    assert sorted(required_dependencies) == sorted(
        [
            "PyYAML",
            "SQLAlchemy",
            "async-timeout",
            "langchain-core",
            "langchain-text-splitters",
            "langsmith",
            "pydantic",
            "requests",
        ],
    )