Files
langchain/tests/integration_tests/llms/test_replicate.py
Taqi Jaffri 973593c5c7 Added streaming support to Replicate (#8045)
Streaming support is useful if you are doing long-running completions or
need interactivity e.g. for chat... adding it to replicate, using a
similar pattern to other LLMs that support streaming.

Housekeeping: I ran `make format` and `make lint`, no issues reported in
the files I touched.

I did update the replicate integration test but ran into some issues,
specifically:

1. The original test was failing for me due to the model argument not
being specified... perhaps this test is not regularly run? I fixed it by
adding a call to the lightweight hello world model which should not be
burdensome for replicate infra.
2. I couldn't get the `make integration_tests` command to pass... a lot
of failures in other integration tests due to missing dependencies...
however I did make sure the particluar test file I updated does pass, by
running `poetry run pytest
tests/integration_tests/llms/test_replicate.py`

Finally, I am @tjaffri https://twitter.com/tjaffri for feature
announcement tweets... or if you could please tag @docugami
https://twitter.com/docugami we would really appreciate that :-)

Tagging model maintainers @hwchase17  @baskaryan 

Thank for all the awesome work you folks are doing.

---------

Co-authored-by: Taqi Jaffri <tjaffri@docugami.com>
2023-07-20 18:59:54 -07:00

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Python

"""Test Replicate API wrapper."""
from langchain.callbacks.manager import CallbackManager
from langchain.llms.replicate import Replicate
from tests.unit_tests.callbacks.fake_callback_handler import FakeCallbackHandler
TEST_MODEL_NAME = "replicate/hello-world"
TEST_MODEL_VER = "5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa"
TEST_MODEL = TEST_MODEL_NAME + ":" + TEST_MODEL_VER
def test_replicate_call() -> None:
"""Test simple non-streaming call to Replicate."""
llm = Replicate(model=TEST_MODEL)
output = llm("LangChain")
assert output == "hello LangChain"
def test_replicate_streaming_call() -> None:
"""Test streaming call to Replicate."""
callback_handler = FakeCallbackHandler()
callback_manager = CallbackManager([callback_handler])
llm = Replicate(streaming=True, callback_manager=callback_manager, model=TEST_MODEL)
output = llm("LangChain")
assert output == "hello LangChain"
assert callback_handler.llm_streams == 15