+++ /dev/null
-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 NGramTokenizer} for correctness.
- */
-public class NGramTokenizerTest 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 NGramTokenizer(input, 2, 1);
- } catch (IllegalArgumentException e) {
- gotException = true;
- }
- assertTrue(gotException);
- }
-
- public void testInvalidInput2() throws Exception {
- boolean gotException = false;
- try {
- new NGramTokenizer(input, 0, 1);
- } catch (IllegalArgumentException e) {
- gotException = true;
- }
- assertTrue(gotException);
- }
-
- public void testUnigrams() throws Exception {
- NGramTokenizer tokenizer = new NGramTokenizer(input, 1, 1);
- assertTokenStreamContents(tokenizer, new String[]{"a","b","c","d","e"}, new int[]{0,1,2,3,4}, new int[]{1,2,3,4,5}, 5 /* abcde */);
- }
-
- public void testBigrams() throws Exception {
- NGramTokenizer tokenizer = new NGramTokenizer(input, 2, 2);
- assertTokenStreamContents(tokenizer, new String[]{"ab","bc","cd","de"}, new int[]{0,1,2,3}, new int[]{2,3,4,5}, 5 /* abcde */);
- }
-
- public void testNgrams() throws Exception {
- NGramTokenizer tokenizer = new NGramTokenizer(input, 1, 3);
- assertTokenStreamContents(tokenizer,
- new String[]{"a","b","c","d","e", "ab","bc","cd","de", "abc","bcd","cde"},
- new int[]{0,1,2,3,4, 0,1,2,3, 0,1,2},
- new int[]{1,2,3,4,5, 2,3,4,5, 3,4,5},
- 5 /* abcde */
- );
- }
-
- public void testOversizedNgrams() throws Exception {
- NGramTokenizer tokenizer = new NGramTokenizer(input, 6, 7);
- assertTokenStreamContents(tokenizer, new String[0], new int[0], new int[0], 5 /* abcde */);
- }
-
- public void testReset() throws Exception {
- NGramTokenizer tokenizer = new NGramTokenizer(input, 1, 1);
- assertTokenStreamContents(tokenizer, new String[]{"a","b","c","d","e"}, new int[]{0,1,2,3,4}, new int[]{1,2,3,4,5}, 5 /* abcde */);
- tokenizer.reset(new StringReader("abcde"));
- assertTokenStreamContents(tokenizer, new String[]{"a","b","c","d","e"}, new int[]{0,1,2,3,4}, new int[]{1,2,3,4,5}, 5 /* abcde */);
- }
-}