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test_prompt_cache_key_model_kwargs() — langchain Function Reference

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

Function python LangChainCore LanguageModelBase

Entity Profile

Dependency Diagram

graph TD
  1c658a68_c3aa_0fd8_ed95_ff160999e4db["test_prompt_cache_key_model_kwargs()"]
  adfe4542_d9fc_113e_aad7_23a86789157a["test_prompt_cache_key.py"]
  1c658a68_c3aa_0fd8_ed95_ff160999e4db -->|defined in| adfe4542_d9fc_113e_aad7_23a86789157a
  style 1c658a68_c3aa_0fd8_ed95_ff160999e4db 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 50–68

def test_prompt_cache_key_model_kwargs() -> None:
    """Test prompt_cache_key via model_kwargs and method precedence."""
    messages = [HumanMessage("Hello world")]

    # Test model-level via model_kwargs
    chat = ChatOpenAI(
        model="gpt-4o-mini",
        max_completion_tokens=10,
        model_kwargs={"prompt_cache_key": "model-level-cache"},
    )
    payload = chat._get_request_payload(messages)
    assert "prompt_cache_key" in payload
    assert payload["prompt_cache_key"] == "model-level-cache"

    # Test that per-call cache key overrides model-level
    payload_override = chat._get_request_payload(
        messages, prompt_cache_key="per-call-cache"
    )
    assert payload_override["prompt_cache_key"] == "per-call-cache"

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Frequently Asked Questions

What does test_prompt_cache_key_model_kwargs() do?
test_prompt_cache_key_model_kwargs() 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_model_kwargs() defined?
test_prompt_cache_key_model_kwargs() is defined in libs/partners/openai/tests/unit_tests/chat_models/test_prompt_cache_key.py at line 50.

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