X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/cz/TestCzechStemmer.java diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/cz/TestCzechStemmer.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/cz/TestCzechStemmer.java new file mode 100644 index 0000000..b83a6f6 --- /dev/null +++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/cz/TestCzechStemmer.java @@ -0,0 +1,285 @@ +package org.apache.lucene.analysis.cz; + +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 java.io.IOException; +import java.io.StringReader; + +import org.apache.lucene.analysis.BaseTokenStreamTestCase; +import org.apache.lucene.analysis.CharArraySet; +import org.apache.lucene.analysis.KeywordMarkerFilter; +import org.apache.lucene.analysis.MockTokenizer; + +/** + * Test the Czech Stemmer. + * + * Note: its algorithmic, so some stems are nonsense + * + */ +public class TestCzechStemmer extends BaseTokenStreamTestCase { + + /** + * Test showing how masculine noun forms conflate + */ + public void testMasculineNouns() throws IOException { + CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT); + + /* animate ending with a hard consonant */ + assertAnalyzesTo(cz, "pán", new String[] { "pán" }); + assertAnalyzesTo(cz, "páni", new String[] { "pán" }); + assertAnalyzesTo(cz, "pánové", new String[] { "pán" }); + assertAnalyzesTo(cz, "pána", new String[] { "pán" }); + assertAnalyzesTo(cz, "pánů", new String[] { "pán" }); + assertAnalyzesTo(cz, "pánovi", new String[] { "pán" }); + assertAnalyzesTo(cz, "pánům", new String[] { "pán" }); + assertAnalyzesTo(cz, "pány", new String[] { "pán" }); + assertAnalyzesTo(cz, "páne", new String[] { "pán" }); + assertAnalyzesTo(cz, "pánech", new String[] { "pán" }); + assertAnalyzesTo(cz, "pánem", new String[] { "pán" }); + + /* inanimate ending with hard consonant */ + assertAnalyzesTo(cz, "hrad", new String[] { "hrad" }); + assertAnalyzesTo(cz, "hradu", new String[] { "hrad" }); + assertAnalyzesTo(cz, "hrade", new String[] { "hrad" }); + assertAnalyzesTo(cz, "hradem", new String[] { "hrad" }); + assertAnalyzesTo(cz, "hrady", new String[] { "hrad" }); + assertAnalyzesTo(cz, "hradech", new String[] { "hrad" }); + assertAnalyzesTo(cz, "hradům", new String[] { "hrad" }); + assertAnalyzesTo(cz, "hradů", new String[] { "hrad" }); + + /* animate ending with a soft consonant */ + assertAnalyzesTo(cz, "muž", new String[] { "muh" }); + assertAnalyzesTo(cz, "muži", new String[] { "muh" }); + assertAnalyzesTo(cz, "muže", new String[] { "muh" }); + assertAnalyzesTo(cz, "mužů", new String[] { "muh" }); + assertAnalyzesTo(cz, "mužům", new String[] { "muh" }); + assertAnalyzesTo(cz, "mužích", new String[] { "muh" }); + assertAnalyzesTo(cz, "mužem", new String[] { "muh" }); + + /* inanimate ending with a soft consonant */ + assertAnalyzesTo(cz, "stroj", new String[] { "stroj" }); + assertAnalyzesTo(cz, "stroje", new String[] { "stroj" }); + assertAnalyzesTo(cz, "strojů", new String[] { "stroj" }); + assertAnalyzesTo(cz, "stroji", new String[] { "stroj" }); + assertAnalyzesTo(cz, "strojům", new String[] { "stroj" }); + assertAnalyzesTo(cz, "strojích", new String[] { "stroj" }); + assertAnalyzesTo(cz, "strojem", new String[] { "stroj" }); + + /* ending with a */ + assertAnalyzesTo(cz, "předseda", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedové", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedy", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedů", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedovi", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedům", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedu", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedo", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedech", new String[] { "předsd" }); + assertAnalyzesTo(cz, "předsedou", new String[] { "předsd" }); + + /* ending with e */ + assertAnalyzesTo(cz, "soudce", new String[] { "soudk" }); + assertAnalyzesTo(cz, "soudci", new String[] { "soudk" }); + assertAnalyzesTo(cz, "soudců", new String[] { "soudk" }); + assertAnalyzesTo(cz, "soudcům", new String[] { "soudk" }); + assertAnalyzesTo(cz, "soudcích", new String[] { "soudk" }); + assertAnalyzesTo(cz, "soudcem", new String[] { "soudk" }); + } + + /** + * Test showing how feminine noun forms conflate + */ + public void testFeminineNouns() throws IOException { + CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT); + + /* ending with hard consonant */ + assertAnalyzesTo(cz, "kost", new String[] { "kost" }); + assertAnalyzesTo(cz, "kosti", new String[] { "kost" }); + assertAnalyzesTo(cz, "kostí", new String[] { "kost" }); + assertAnalyzesTo(cz, "kostem", new String[] { "kost" }); + assertAnalyzesTo(cz, "kostech", new String[] { "kost" }); + assertAnalyzesTo(cz, "kostmi", new String[] { "kost" }); + + /* ending with a soft consonant */ + // note: in this example sing nom. and sing acc. don't conflate w/ the rest + assertAnalyzesTo(cz, "píseň", new String[] { "písň" }); + assertAnalyzesTo(cz, "písně", new String[] { "písn" }); + assertAnalyzesTo(cz, "písni", new String[] { "písn" }); + assertAnalyzesTo(cz, "písněmi", new String[] { "písn" }); + assertAnalyzesTo(cz, "písních", new String[] { "písn" }); + assertAnalyzesTo(cz, "písním", new String[] { "písn" }); + + /* ending with e */ + assertAnalyzesTo(cz, "růže", new String[] { "růh" }); + assertAnalyzesTo(cz, "růží", new String[] { "růh" }); + assertAnalyzesTo(cz, "růžím", new String[] { "růh" }); + assertAnalyzesTo(cz, "růžích", new String[] { "růh" }); + assertAnalyzesTo(cz, "růžemi", new String[] { "růh" }); + assertAnalyzesTo(cz, "růži", new String[] { "růh" }); + + /* ending with a */ + assertAnalyzesTo(cz, "žena", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženy", new String[] { "žn" }); + assertAnalyzesTo(cz, "žen", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženě", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženám", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženu", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženo", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženách", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženou", new String[] { "žn" }); + assertAnalyzesTo(cz, "ženami", new String[] { "žn" }); + } + + /** + * Test showing how neuter noun forms conflate + */ + public void testNeuterNouns() throws IOException { + CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT); + + /* ending with o */ + assertAnalyzesTo(cz, "město", new String[] { "měst" }); + assertAnalyzesTo(cz, "města", new String[] { "měst" }); + assertAnalyzesTo(cz, "měst", new String[] { "měst" }); + assertAnalyzesTo(cz, "městu", new String[] { "měst" }); + assertAnalyzesTo(cz, "městům", new String[] { "měst" }); + assertAnalyzesTo(cz, "městě", new String[] { "měst" }); + assertAnalyzesTo(cz, "městech", new String[] { "měst" }); + assertAnalyzesTo(cz, "městem", new String[] { "měst" }); + assertAnalyzesTo(cz, "městy", new String[] { "měst" }); + + /* ending with e */ + assertAnalyzesTo(cz, "moře", new String[] { "moř" }); + assertAnalyzesTo(cz, "moří", new String[] { "moř" }); + assertAnalyzesTo(cz, "mořím", new String[] { "moř" }); + assertAnalyzesTo(cz, "moři", new String[] { "moř" }); + assertAnalyzesTo(cz, "mořích", new String[] { "moř" }); + assertAnalyzesTo(cz, "mořem", new String[] { "moř" }); + + /* ending with ě */ + assertAnalyzesTo(cz, "kuře", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřata", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřete", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřat", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřeti", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřatům", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřatech", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřetem", new String[] { "kuř" }); + assertAnalyzesTo(cz, "kuřaty", new String[] { "kuř" }); + + /* ending with í */ + assertAnalyzesTo(cz, "stavení", new String[] { "stavn" }); + assertAnalyzesTo(cz, "stavením", new String[] { "stavn" }); + assertAnalyzesTo(cz, "staveních", new String[] { "stavn" }); + assertAnalyzesTo(cz, "staveními", new String[] { "stavn" }); + } + + /** + * Test showing how adjectival forms conflate + */ + public void testAdjectives() throws IOException { + CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT); + + /* ending with ý/á/é */ + assertAnalyzesTo(cz, "mladý", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladí", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladého", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladých", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladému", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladým", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladé", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladém", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladými", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladá", new String[] { "mlad" }); + assertAnalyzesTo(cz, "mladou", new String[] { "mlad" }); + + /* ending with í */ + assertAnalyzesTo(cz, "jarní", new String[] { "jarn" }); + assertAnalyzesTo(cz, "jarního", new String[] { "jarn" }); + assertAnalyzesTo(cz, "jarních", new String[] { "jarn" }); + assertAnalyzesTo(cz, "jarnímu", new String[] { "jarn" }); + assertAnalyzesTo(cz, "jarním", new String[] { "jarn" }); + assertAnalyzesTo(cz, "jarními", new String[] { "jarn" }); + } + + /** + * Test some possessive suffixes + */ + public void testPossessive() throws IOException { + CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT); + assertAnalyzesTo(cz, "Karlův", new String[] { "karl" }); + assertAnalyzesTo(cz, "jazykový", new String[] { "jazyk" }); + } + + /** + * Test some exceptional rules, implemented as rewrites. + */ + public void testExceptions() throws IOException { + CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT); + + /* rewrite of št -> sk */ + assertAnalyzesTo(cz, "český", new String[] { "česk" }); + assertAnalyzesTo(cz, "čeští", new String[] { "česk" }); + + /* rewrite of čt -> ck */ + assertAnalyzesTo(cz, "anglický", new String[] { "anglick" }); + assertAnalyzesTo(cz, "angličtí", new String[] { "anglick" }); + + /* rewrite of z -> h */ + assertAnalyzesTo(cz, "kniha", new String[] { "knih" }); + assertAnalyzesTo(cz, "knize", new String[] { "knih" }); + + /* rewrite of ž -> h */ + assertAnalyzesTo(cz, "mazat", new String[] { "mah" }); + assertAnalyzesTo(cz, "mažu", new String[] { "mah" }); + + /* rewrite of c -> k */ + assertAnalyzesTo(cz, "kluk", new String[] { "kluk" }); + assertAnalyzesTo(cz, "kluci", new String[] { "kluk" }); + assertAnalyzesTo(cz, "klucích", new String[] { "kluk" }); + + /* rewrite of č -> k */ + assertAnalyzesTo(cz, "hezký", new String[] { "hezk" }); + assertAnalyzesTo(cz, "hezčí", new String[] { "hezk" }); + + /* rewrite of *ů* -> *o* */ + assertAnalyzesTo(cz, "hůl", new String[] { "hol" }); + assertAnalyzesTo(cz, "hole", new String[] { "hol" }); + + /* rewrite of e* -> * */ + assertAnalyzesTo(cz, "deska", new String[] { "desk" }); + assertAnalyzesTo(cz, "desek", new String[] { "desk" }); + } + + /** + * Test that very short words are not stemmed. + */ + public void testDontStem() throws IOException { + CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT); + assertAnalyzesTo(cz, "e", new String[] { "e" }); + assertAnalyzesTo(cz, "zi", new String[] { "zi" }); + } + + public void testWithKeywordAttribute() throws IOException { + CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, 1, true); + set.add("hole"); + CzechStemFilter filter = new CzechStemFilter(new KeywordMarkerFilter( + new MockTokenizer(new StringReader("hole desek"), MockTokenizer.WHITESPACE, false), set)); + assertTokenStreamContents(filter, new String[] { "hole", "desk" }); + } + +}