# ====================================================================
# 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.
# ====================================================================
from unittest import TestCase,main
from lucene import *
class StopAnalyzerTestCase(TestCase):
"""
Unit tests ported from Java Lucene
"""
def setUp(self):
self.stop = StopAnalyzer(Version.LUCENE_CURRENT)
self.invalidTokens = StopAnalyzer.ENGLISH_STOP_WORDS_SET
def testDefaults(self):
self.assert_(self.stop is not None)
reader = StringReader("This is a test of the english stop analyzer")
stream = self.stop.tokenStream("test", reader)
self.assert_(stream is not None)
termAtt = stream.getAttribute(TermAttribute.class_)
while stream.incrementToken():
self.assert_(termAtt.term() not in self.invalidTokens)
def testStopList(self):
stopWords = ["good", "test", "analyzer"]
stopWordsSet = HashSet()
for stopWord in stopWords:
stopWordsSet.add(stopWord)
newStop = StopAnalyzer(Version.LUCENE_24, stopWordsSet)
reader = StringReader("This is a good test of the english stop analyzer")
stream = newStop.tokenStream("test", reader)
self.assert_(stream is not None)
termAtt = stream.getAttribute(TermAttribute.class_)
posIncrAtt = stream.addAttribute(PositionIncrementAttribute.class_)
while stream.incrementToken():
text = termAtt.term()
self.assert_(text not in stopWordsSet)
# by default stop tokenizer does not apply increments.
self.assertEqual(1, posIncrAtt.getPositionIncrement())
def testStopListPositions(self):
stopWords = ["good", "test", "analyzer"]
stopWordsSet = HashSet()
for stopWord in stopWords:
stopWordsSet.add(stopWord)
newStop = StopAnalyzer(Version.LUCENE_CURRENT, stopWordsSet)
reader = StringReader("This is a good test of the english stop analyzer with positions")
expectedIncr = [ 1, 1, 1, 3, 1, 1, 1, 2, 1]
stream = newStop.tokenStream("test", reader)
self.assert_(stream is not None)
i = 0
termAtt = stream.getAttribute(TermAttribute.class_)
posIncrAtt = stream.addAttribute(PositionIncrementAttribute.class_)
while stream.incrementToken():
text = termAtt.term()
self.assert_(text not in stopWordsSet)
self.assertEqual(expectedIncr[i],
posIncrAtt.getPositionIncrement())
i += 1
if __name__ == "__main__":
import sys, lucene
lucene.initVM()
if '-loop' in sys.argv:
sys.argv.remove('-loop')
while True:
try:
main()
except:
pass
else:
main()
|