test_prompt_jinja2_missing_input_variables() — langchain Function Reference

Architecture documentation for the test_prompt_jinja2_missing_input_variables() function in test_prompt.py from the langchain codebase.

Function python CoreAbstractions RunnableInterface

Entity Profile

CoreAbstractions→ RunnableInterface→ test_prompt_jinja2_missing_input_variables() — langchain Function Reference

Dependency Diagram

graph TD
  e94d969b_f56c_d33c_6314_7aaa4a4dab7e["test_prompt_jinja2_missing_input_variables()"]
  af1b998b_a7bf_9d5c_32ef_bab507a6bee3["test_prompt.py"]
  e94d969b_f56c_d33c_6314_7aaa4a4dab7e -->|defined in| af1b998b_a7bf_9d5c_32ef_bab507a6bee3
  style e94d969b_f56c_d33c_6314_7aaa4a4dab7e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/prompts/test_prompt.py lines 505–518

def test_prompt_jinja2_missing_input_variables() -> None:
    """Test error is raised when input variables are not provided."""
    template = "This is a {{ foo }} test."
    input_variables: list[str] = []
    with pytest.warns(UserWarning, match="Missing variables: {'foo'}"):
        PromptTemplate(
            input_variables=input_variables,
            template=template,
            template_format="jinja2",
            validate_template=True,
        )
    assert PromptTemplate(
        input_variables=input_variables, template=template, template_format="jinja2"
    ).input_variables == ["foo"]