haystack/test/nodes/test_preprocessor.py
tstadel 1168f6365d
Fix using id_hash_keys as pipeline params (#2717)
* Fix using id_hash_keys as pipeline params

* Update Documentation & Code Style

* add tests

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2022-06-24 09:55:09 +02:00

130 lines
4.9 KiB
Python

import sys
from pathlib import Path
import pytest
from haystack import Document
from haystack.nodes.file_converter.pdf import PDFToTextConverter
from haystack.nodes.preprocessor.preprocessor import PreProcessor
from ..conftest import SAMPLES_PATH
TEXT = """
This is a sample sentence in paragraph_1. This is a sample sentence in paragraph_1. This is a sample sentence in
paragraph_1. This is a sample sentence in paragraph_1. This is a sample sentence in paragraph_1.
This is a sample sentence in paragraph_2. This is a sample sentence in paragraph_2. This is a sample sentence in
paragraph_2. This is a sample sentence in paragraph_2. This is a sample sentence in paragraph_2.
This is a sample sentence in paragraph_3. This is a sample sentence in paragraph_3. This is a sample sentence in
paragraph_3. This is a sample sentence in paragraph_3. This is to trick the test with using an abbreviation like Dr.
in the sentence.
"""
def test_preprocess_sentence_split():
document = Document(content=TEXT)
preprocessor = PreProcessor(
split_length=1, split_overlap=0, split_by="sentence", split_respect_sentence_boundary=False
)
documents = preprocessor.process(document)
assert len(documents) == 15
preprocessor = PreProcessor(
split_length=10, split_overlap=0, split_by="sentence", split_respect_sentence_boundary=False
)
documents = preprocessor.process(document)
assert len(documents) == 2
def test_preprocess_word_split():
document = Document(content=TEXT)
preprocessor = PreProcessor(
split_length=10, split_overlap=0, split_by="word", split_respect_sentence_boundary=False
)
documents = preprocessor.process(document)
assert len(documents) == 11
preprocessor = PreProcessor(split_length=15, split_overlap=0, split_by="word", split_respect_sentence_boundary=True)
documents = preprocessor.process(document)
for i, doc in enumerate(documents):
if i == 0:
assert len(doc.content.split(" ")) == 14
assert len(doc.content.split(" ")) <= 15 or doc.content.startswith("This is to trick")
assert len(documents) == 8
preprocessor = PreProcessor(
split_length=40, split_overlap=10, split_by="word", split_respect_sentence_boundary=True
)
documents = preprocessor.process(document)
assert len(documents) == 5
preprocessor = PreProcessor(split_length=5, split_overlap=0, split_by="word", split_respect_sentence_boundary=True)
documents = preprocessor.process(document)
assert len(documents) == 15
def test_preprocess_passage_split():
document = Document(content=TEXT)
preprocessor = PreProcessor(
split_length=1, split_overlap=0, split_by="passage", split_respect_sentence_boundary=False
)
documents = preprocessor.process(document)
assert len(documents) == 3
preprocessor = PreProcessor(
split_length=2, split_overlap=0, split_by="passage", split_respect_sentence_boundary=False
)
documents = preprocessor.process(document)
assert len(documents) == 2
@pytest.mark.skipif(sys.platform in ["win32", "cygwin"], reason="FIXME Footer not detected correctly on Windows")
def test_clean_header_footer():
converter = PDFToTextConverter()
document = converter.convert(
file_path=Path(SAMPLES_PATH / "pdf" / "sample_pdf_2.pdf")
) # file contains header/footer
preprocessor = PreProcessor(clean_header_footer=True, split_by=None)
documents = preprocessor.process(document)
assert len(documents) == 1
assert "This is a header." not in documents[0].content
assert "footer" not in documents[0].content
def test_remove_substrings():
document = Document(content="This is a header. Some additional text. wiki. Some emoji ✨ 🪲 Weird whitespace\b\b\b.")
# check that the file contains the substrings we are about to remove
assert "This is a header." in document.content
assert "wiki" in document.content
assert "🪲" in document.content
assert "whitespace" in document.content
assert "" in document.content
preprocessor = PreProcessor(remove_substrings=["This is a header.", "wiki", "🪲"])
documents = preprocessor.process(document)
assert "This is a header." not in documents[0].content
assert "wiki" not in documents[0].content
assert "🪲" not in documents[0].content
assert "whitespace" in documents[0].content
assert "" in documents[0].content
def test_id_hash_keys_from_pipeline_params():
document_1 = Document(content="This is a document.", meta={"key": "a"})
document_2 = Document(content="This is a document.", meta={"key": "b"})
assert document_1.id == document_2.id
preprocessor = PreProcessor(split_length=2, split_respect_sentence_boundary=False)
output, _ = preprocessor.run(documents=[document_1, document_2], id_hash_keys=["content", "meta"])
documents = output["documents"]
unique_ids = set(d.id for d in documents)
assert len(documents) == 4
assert len(unique_ids) == 4