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test_prompt_cache_key_parameter_exclusion() — langchain Function Reference

Architecture documentation for the test_prompt_cache_key_parameter_exclusion() function in test_prompt_cache_key.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

Dependency Diagram

graph TD
  0a17b104_7c48_4a4b_1400_793e296fd265["test_prompt_cache_key_parameter_exclusion()"]
  adfe4542_d9fc_113e_aad7_23a86789157a["test_prompt_cache_key.py"]
  0a17b104_7c48_4a4b_1400_793e296fd265 -->|defined in| adfe4542_d9fc_113e_aad7_23a86789157a
  style 0a17b104_7c48_4a4b_1400_793e296fd265 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

libs/partners/openai/tests/unit_tests/chat_models/test_prompt_cache_key.py lines 18–26

def test_prompt_cache_key_parameter_exclusion() -> None:
    """Test that prompt_cache_key parameter behavior matches OpenAI API."""
    chat = ChatOpenAI(model="gpt-4o-mini", max_completion_tokens=10)
    messages = [HumanMessage("Hello")]

    # Test with explicit None (OpenAI should accept None values (marked Optional))
    payload = chat._get_request_payload(messages, prompt_cache_key=None)
    assert "prompt_cache_key" in payload
    assert payload["prompt_cache_key"] is None

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Frequently Asked Questions

What does test_prompt_cache_key_parameter_exclusion() do?
test_prompt_cache_key_parameter_exclusion() is a function in the langchain codebase, defined in libs/partners/openai/tests/unit_tests/chat_models/test_prompt_cache_key.py.
Where is test_prompt_cache_key_parameter_exclusion() defined?
test_prompt_cache_key_parameter_exclusion() is defined in libs/partners/openai/tests/unit_tests/chat_models/test_prompt_cache_key.py at line 18.

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