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test_prompt_cache_key_invoke() — langchain Function Reference

Architecture documentation for the test_prompt_cache_key_invoke() function in test_base.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

Dependency Diagram

graph TD
  703b5de4_fffd_816e_569b_1950957d13df["test_prompt_cache_key_invoke()"]
  bd382a4e_442c_13ae_530c_6e34bc43623d["test_base.py"]
  703b5de4_fffd_816e_569b_1950957d13df -->|defined in| bd382a4e_442c_13ae_530c_6e34bc43623d
  style 703b5de4_fffd_816e_569b_1950957d13df fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

libs/partners/openai/tests/integration_tests/chat_models/test_base.py lines 1176–1193

def test_prompt_cache_key_invoke() -> None:
    """Test that `prompt_cache_key` works with invoke calls."""
    chat = ChatOpenAI(model="gpt-5-nano", max_completion_tokens=500)
    messages = [HumanMessage("Say hello")]

    # Test that invoke works with prompt_cache_key parameter
    response = chat.invoke(messages, prompt_cache_key="integration-test-v1")

    assert isinstance(response, AIMessage)
    assert isinstance(response.content, str)
    assert len(response.content) > 0

    # Test that subsequent call with same cache key also works
    response2 = chat.invoke(messages, prompt_cache_key="integration-test-v1")

    assert isinstance(response2, AIMessage)
    assert isinstance(response2.content, str)
    assert len(response2.content) > 0

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Frequently Asked Questions

What does test_prompt_cache_key_invoke() do?
test_prompt_cache_key_invoke() is a function in the langchain codebase, defined in libs/partners/openai/tests/integration_tests/chat_models/test_base.py.
Where is test_prompt_cache_key_invoke() defined?
test_prompt_cache_key_invoke() is defined in libs/partners/openai/tests/integration_tests/chat_models/test_base.py at line 1176.

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