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49 lines
2.4 KiB
Python
49 lines
2.4 KiB
Python
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from haystack.schema import Document
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from haystack.nodes import TransformersSummarizer
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DOCS = [
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Document(
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content="""
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PG&E stated it scheduled the blackouts in response to forecasts for high winds amid dry conditions.
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The aim is to reduce the risk of wildfires. Nearly 800 thousand customers were scheduled to be affected
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by the shutoffs which were expected to last through at least midday tomorrow.
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"""
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),
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Document(
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content="""
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The tower is 324 metres (1,063 ft) tall, about the same height as an 81-storey building, and the tallest
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structure in Paris. Its base is square, measuring 125 metres (410 ft) on each side. During its construction,
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the Eiffel Tower surpassed the Washington Monument to become the tallest man-made structure in the world, a
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title it held for 41 years until the Chrysler Building in New York City was finished in 1930. It was the first
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structure to reach a height of 300 metres. Due to the addition of a broadcasting aerial at the top of the tower
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in 1957, it is now taller than the Chrysler Building by 5.2 metres (17 ft). Excluding transmitters, the Eiffel
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Tower is the second tallest free-standing structure in France after the Millau Viaduct.
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"""
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),
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]
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EXPECTED_SUMMARIES = [
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"Hundreds of thousands of customers in California have been left without power after a power cut.",
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"The Eiffel Tower in Paris is the world's tallest man-made structure.",
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]
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def test_summarization():
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summarizer = TransformersSummarizer(model_name_or_path="sshleifer/distilbart-xsum-12-6", use_gpu=False)
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summarized_docs = summarizer.predict(documents=DOCS)
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assert len(summarized_docs) == len(DOCS)
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for expected_summary, summary in zip(EXPECTED_SUMMARIES, summarized_docs):
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assert expected_summary.strip() == summary.meta["summary"].strip()
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def test_summarization_batch():
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summarizer = TransformersSummarizer(model_name_or_path="sshleifer/distilbart-xsum-12-6", use_gpu=False)
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summarized_docs = summarizer.predict_batch(documents=[DOCS, DOCS])
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assert len(summarized_docs) == 2 # Number of document lists
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assert len(summarized_docs[0]) == len(DOCS)
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assert len(summarized_docs[1]) == len(DOCS)
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for expected_summary, summary_1, summary_2 in zip(EXPECTED_SUMMARIES, summarized_docs[0], summarized_docs[1]):
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assert expected_summary.strip() == summary_1.meta["summary"].strip()
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assert expected_summary.strip() == summary_2.meta["summary"].strip()
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