NetsPresso_QA / tests /test_analysis_lucene8.py
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#
# Pyserini: Reproducible IR research with sparse and dense representations
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import os
import shutil
import tarfile
import unittest
from random import randint
from urllib.request import urlretrieve
from pyserini.analysis import get_lucene_analyzer
from pyserini.index.lucene import IndexReader
from pyserini.search.lucene import LuceneSearcher
class TestAnalyzersForLucene8(unittest.TestCase):
# This class contains the test cases from test_analysis that require Lucene 8 backwards compatibility.
def setUp(self):
# Download pre-built CACM index built using Lucene 8; append a random value to avoid filename clashes.
r = randint(0, 10000000)
self.collection_url = 'https://github.com/castorini/anserini-data/raw/master/CACM/lucene8-index.cacm.tar.gz'
self.tarball_name = 'lucene-index.cacm-{}.tar.gz'.format(r)
self.index_dir = 'index{}/'.format(r)
_, _ = urlretrieve(self.collection_url, self.tarball_name)
tarball = tarfile.open(self.tarball_name)
tarball.extractall(self.index_dir)
tarball.close()
self.searcher = LuceneSearcher(f'{self.index_dir}lucene-index.cacm')
self.index_utils = IndexReader(f'{self.index_dir}lucene-index.cacm')
def test_different_analyzers_are_different(self):
self.searcher.set_analyzer(get_lucene_analyzer(stemming=False))
hits_first = self.searcher.search('information retrieval')
self.searcher.set_analyzer(get_lucene_analyzer())
hits_second = self.searcher.search('information retrieval')
self.assertNotEqual(hits_first, hits_second)
def tearDown(self):
self.searcher.close()
os.remove(self.tarball_name)
shutil.rmtree(self.index_dir)