pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/ngram/EdgeNGramTokenizerTest.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/ngram/EdgeNGramTokenizerTest.java
new file mode 100644 (file)
index 0000000..cf2686b
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+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/ngram/EdgeNGramTokenizerTest.java
@@ -0,0 +1,98 @@
+package org.apache.lucene.analysis.ngram;
+
+/**
+ * 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.StringReader;
+
+import org.apache.lucene.analysis.BaseTokenStreamTestCase;
+
+/**
+ * Tests {@link EdgeNGramTokenizer} for correctness.
+ */
+public class EdgeNGramTokenizerTest extends BaseTokenStreamTestCase {
+  private StringReader input;
+
+  @Override
+  public void setUp() throws Exception {
+    super.setUp();
+    input = new StringReader("abcde");
+  }
+
+  public void testInvalidInput() throws Exception {
+    boolean gotException = false;
+    try {        
+      new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.FRONT, 0, 0);
+    } catch (IllegalArgumentException e) {
+      gotException = true;
+    }
+    assertTrue(gotException);
+  }
+
+  public void testInvalidInput2() throws Exception {
+    boolean gotException = false;
+    try {        
+      new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.FRONT, 2, 1);
+    } catch (IllegalArgumentException e) {
+      gotException = true;
+    }
+    assertTrue(gotException);
+  }
+
+  public void testInvalidInput3() throws Exception {
+    boolean gotException = false;
+    try {        
+      new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.FRONT, -1, 2);
+    } catch (IllegalArgumentException e) {
+      gotException = true;
+    }
+    assertTrue(gotException);
+  }
+
+  public void testFrontUnigram() throws Exception {
+    EdgeNGramTokenizer tokenizer = new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.FRONT, 1, 1);
+    assertTokenStreamContents(tokenizer, new String[]{"a"}, new int[]{0}, new int[]{1}, 5 /* abcde */);
+  }
+
+  public void testBackUnigram() throws Exception {
+    EdgeNGramTokenizer tokenizer = new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.BACK, 1, 1);
+    assertTokenStreamContents(tokenizer, new String[]{"e"}, new int[]{4}, new int[]{5}, 5 /* abcde */);
+  }
+
+  public void testOversizedNgrams() throws Exception {
+    EdgeNGramTokenizer tokenizer = new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.FRONT, 6, 6);
+    assertTokenStreamContents(tokenizer, new String[0], new int[0], new int[0], 5 /* abcde */);
+  }
+
+  public void testFrontRangeOfNgrams() throws Exception {
+    EdgeNGramTokenizer tokenizer = new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.FRONT, 1, 3);
+    assertTokenStreamContents(tokenizer, new String[]{"a","ab","abc"}, new int[]{0,0,0}, new int[]{1,2,3}, 5 /* abcde */);
+  }
+
+  public void testBackRangeOfNgrams() throws Exception {
+    EdgeNGramTokenizer tokenizer = new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.BACK, 1, 3);
+    assertTokenStreamContents(tokenizer, new String[]{"e","de","cde"}, new int[]{4,3,2}, new int[]{5,5,5}, 5 /* abcde */);
+  }
+  
+  public void testReset() throws Exception {
+    EdgeNGramTokenizer tokenizer = new EdgeNGramTokenizer(input, EdgeNGramTokenizer.Side.FRONT, 1, 3);
+    assertTokenStreamContents(tokenizer, new String[]{"a","ab","abc"}, new int[]{0,0,0}, new int[]{1,2,3}, 5 /* abcde */);
+    tokenizer.reset(new StringReader("abcde"));
+    assertTokenStreamContents(tokenizer, new String[]{"a","ab","abc"}, new int[]{0,0,0}, new int[]{1,2,3}, 5 /* abcde */);
+  }
+}