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"""Test document functionality."""
from langchain.docstore.document import Document
_PAGE_CONTENT = """This is a page about LangChain.
It is a really cool framework.
What isn't there to love about langchain?
Made in 2022."""
def test_document_summary() -> None:
"""Test that we extract the summary okay."""
page = Document(page_content=_PAGE_CONTENT)
assert page.summary == "This is a page about LangChain."
def test_document_lookup() -> None:
"""Test that can lookup things okay."""
page = Document(page_content=_PAGE_CONTENT)
# Start with lookup on "LangChain".
output = page.lookup("LangChain")
assert output == "(Result 1/2) This is a page about LangChain."
# Now switch to looking up "framework".
output = page.lookup("framework")
assert output == "(Result 1/1) It is a really cool framework."
# Now switch back to looking up "LangChain", should reset.
output = page.lookup("LangChain")
assert output == "(Result 1/2) This is a page about LangChain."
# Lookup "LangChain" again, should go to the next mention.
output = page.lookup("LangChain")
assert output == "(Result 2/2) What isn't there to love about langchain?"
def test_document_lookups_dont_exist() -> None:
"""Test lookup on term that doesn't exist in the document."""
page = Document(page_content=_PAGE_CONTENT)
# Start with lookup on "harrison".
output = page.lookup("harrison")
assert output == "No Results"
def test_document_lookups_too_many() -> None:
"""Test lookup on term too many times."""
page = Document(page_content=_PAGE_CONTENT)
# Start with lookup on "framework".
output = page.lookup("framework")
assert output == "(Result 1/1) It is a really cool framework."
# Now try again, should be exhausted.
output = page.lookup("framework")
assert output == "No More Results"
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