test_chat_prompt_w_msgs_placeholder_ser_des() — langchain Function Reference

Architecture documentation for the test_chat_prompt_w_msgs_placeholder_ser_des() function in test_chat.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

LangChainCore→ LanguageModelBase→ test_chat_prompt_w_msgs_placeholder_ser_des() — langchain Function Reference

Dependency Diagram

graph TD
  526c9655_f424_2f4e_1098_0df6282b7cd8["test_chat_prompt_w_msgs_placeholder_ser_des()"]
  00c8bbe0_a31c_1ac8_487a_bfd5a9d6b117["test_chat.py"]
  526c9655_f424_2f4e_1098_0df6282b7cd8 -->|defined in| 00c8bbe0_a31c_1ac8_487a_bfd5a9d6b117
  style 526c9655_f424_2f4e_1098_0df6282b7cd8 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/prompts/test_chat.py lines 1195–1206

def test_chat_prompt_w_msgs_placeholder_ser_des(snapshot: SnapshotAssertion) -> None:
    prompt = ChatPromptTemplate.from_messages(
        [
            ("system", "foo"),
            MessagesPlaceholder("bar"),
            ("human", "baz"),
        ]
    )
    assert dumpd(MessagesPlaceholder("bar")) == snapshot(name="placeholder")
    assert load(dumpd(MessagesPlaceholder("bar"))) == MessagesPlaceholder("bar")
    assert dumpd(prompt) == snapshot(name="chat_prompt")
    assert load(dumpd(prompt)) == prompt