mirror of
https://github.com/hwchase17/langchain
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24 lines
773 B
Python
24 lines
773 B
Python
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"""Test text splitters that require an integration."""
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import pytest
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from langchain.text_splitter import CharacterTextSplitter
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def test_huggingface_type_check() -> None:
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"""Test that type checks are done properly on input."""
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with pytest.raises(ValueError):
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CharacterTextSplitter.from_huggingface_tokenizer("foo")
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def test_huggingface_tokenizer() -> None:
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"""Test text splitter that uses a HuggingFace tokenizer."""
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from transformers import GPT2TokenizerFast
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tokenizer = GPT2TokenizerFast.from_pretrained("gpt2")
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text_splitter = CharacterTextSplitter.from_huggingface_tokenizer(
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tokenizer, separator=" ", chunk_size=1, chunk_overlap=0
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)
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output = text_splitter.split_text("foo bar")
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assert output == ["foo", "bar"]
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