mirror of
https://github.com/hwchase17/langchain.git
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32d294b89a
- use latest models in examples to highlight support - standardize on using IDs in examples - no more aliases to improve determinism in future tests - bump lock - in integration tests, fix stale casettes and use `MODEL_NAME` uniformly where possible - add case for default max tokens for sonnet-4-5 (was missing)
79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
"""Test Anthropic API wrapper."""
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from collections.abc import Generator
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import pytest
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from langchain_core.callbacks import CallbackManager
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from langchain_core.outputs import LLMResult
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from langchain_anthropic import AnthropicLLM
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from tests.unit_tests._utils import FakeCallbackHandler
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MODEL = "claude-sonnet-4-5-20250929"
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@pytest.mark.requires("anthropic")
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def test_anthropic_model_name_param() -> None:
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llm = AnthropicLLM(model_name="foo")
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assert llm.model == "foo"
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@pytest.mark.requires("anthropic")
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def test_anthropic_model_param() -> None:
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llm = AnthropicLLM(model="foo") # type: ignore[call-arg]
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assert llm.model == "foo"
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def test_anthropic_call() -> None:
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"""Test valid call to anthropic."""
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llm = AnthropicLLM(model=MODEL) # type: ignore[call-arg]
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output = llm.invoke("Say foo:")
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assert isinstance(output, str)
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def test_anthropic_streaming() -> None:
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"""Test streaming tokens from anthropic."""
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llm = AnthropicLLM(model=MODEL) # type: ignore[call-arg]
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generator = llm.stream("I'm Pickle Rick")
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assert isinstance(generator, Generator)
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for token in generator:
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assert isinstance(token, str)
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def test_anthropic_streaming_callback() -> None:
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"""Test that streaming correctly invokes on_llm_new_token callback."""
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callback_handler = FakeCallbackHandler()
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callback_manager = CallbackManager([callback_handler])
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llm = AnthropicLLM(
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model=MODEL, # type: ignore[call-arg]
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streaming=True,
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callbacks=callback_manager,
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verbose=True,
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)
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llm.invoke("Write me a sentence with 100 words.")
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assert callback_handler.llm_streams > 1
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async def test_anthropic_async_generate() -> None:
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"""Test async generate."""
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llm = AnthropicLLM(model=MODEL) # type: ignore[call-arg]
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output = await llm.agenerate(["How many toes do dogs have?"])
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assert isinstance(output, LLMResult)
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async def test_anthropic_async_streaming_callback() -> None:
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"""Test that streaming correctly invokes on_llm_new_token callback."""
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callback_handler = FakeCallbackHandler()
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callback_manager = CallbackManager([callback_handler])
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llm = AnthropicLLM(
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model=MODEL, # type: ignore[call-arg]
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streaming=True,
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callbacks=callback_manager,
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verbose=True,
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)
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result = await llm.agenerate(["How many toes do dogs have?"])
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assert callback_handler.llm_streams > 1
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assert isinstance(result, LLMResult)
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