pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / analyzers / common / src / test / org / apache / lucene / analysis / en / TestKStemmer.java

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/en/TestKStemmer.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/en/TestKStemmer.java
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+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/en/TestKStemmer.java
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+package org.apache.lucene.analysis.en;
+
+/**
+ * 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 static org.apache.lucene.analysis.VocabularyAssert.assertVocabulary;
+
+import java.io.Reader;
+
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.BaseTokenStreamTestCase;
+import org.apache.lucene.analysis.MockTokenizer;
+import org.apache.lucene.analysis.Tokenizer;
+import org.apache.lucene.analysis.ReusableAnalyzerBase;
+
+/**
+ * Tests for {@link KStemmer}
+ */
+public class TestKStemmer extends BaseTokenStreamTestCase {
+  Analyzer a = new ReusableAnalyzerBase() {
+    @Override
+    protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
+      Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, true);
+      return new TokenStreamComponents(tokenizer, new KStemFilter(tokenizer));
+    }
+  };
+ 
+  /** blast some random strings through the analyzer */
+  public void testRandomStrings() throws Exception {
+    checkRandomData(random, a, 10000*RANDOM_MULTIPLIER);
+  }
+  
+  /** 
+   * test the kstemmer optimizations against a bunch of words
+   * that were stemmed with the original java kstemmer (generated from
+   * testCreateMap, commented out below).
+   */
+  public void testVocabulary() throws Exception {
+    assertVocabulary(a, getDataFile("kstemTestData.zip"), "kstem_examples.txt");
+  }
+
+  /****** requires original java kstem source code to create map
+  public void testCreateMap() throws Exception {
+    String input = getBigDoc();
+    Reader r = new StringReader(input);
+    TokenFilter tf = new LowerCaseFilter(new LetterTokenizer(r));
+    // tf = new KStemFilter(tf);
+
+    KStemmer kstem = new KStemmer();
+    Map<String,String> map = new TreeMap<String,String>();
+    for(;;) {
+      Token t = tf.next();
+      if (t==null) break;
+      String s = t.termText();
+      if (map.containsKey(s)) continue;
+      map.put(s, kstem.stem(s));
+    }
+
+    Writer out = new BufferedWriter(new FileWriter("kstem_examples.txt"));
+    for (String key : map.keySet()) {
+      out.write(key);
+      out.write('\t');
+      out.write(map.get(key));
+      out.write('\n');
+    }
+    out.close();
+  }
+  ******/
+
+}