lucene/analysis/common/src/test/org/apache/lucene/analysis/miscellaneous/TestKeepFilterFactory.java

/*
 * 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.
 */
package org.apache.lucene.analysis.miscellaneous;


import org.apache.lucene.analysis.CharArraySet;
import org.apache.lucene.analysis.util.BaseTokenStreamFactoryTestCase;
import org.apache.lucene.analysis.util.ClasspathResourceLoader;
import org.apache.lucene.analysis.util.ResourceLoader;

public class TestKeepFilterFactory extends BaseTokenStreamFactoryTestCase {

  public void testInform() throws Exception {
    ResourceLoader loader = new ClasspathResourceLoader(getClass());
    assertTrue("loader is null and it shouldn't be", loader != null);
    KeepWordFilterFactory factory = (KeepWordFilterFactory) tokenFilterFactory("KeepWord",
        "words", "keep-1.txt",
        "ignoreCase", "true");
    CharArraySet words = factory.getWords();
    assertTrue("words is null and it shouldn't be", words != null);
    assertTrue("words Size: " + words.size() + " is not: " + 2, words.size() == 2);

    factory = (KeepWordFilterFactory) tokenFilterFactory("KeepWord",
        "words", "keep-1.txt, keep-2.txt",
        "ignoreCase", "true");
    words = factory.getWords();
    assertTrue("words is null and it shouldn't be", words != null);
    assertTrue("words Size: " + words.size() + " is not: " + 4, words.size() == 4);

    factory =
        (KeepWordFilterFactory)
            tokenFilterFactory(
                "KeepWord",
                "words",
                "keep-snowball.txt",
                "format",
                "snowball",
                "ignoreCase",
                "true");
    words = factory.getWords();
    assertEquals(8, words.size());
    assertTrue(words.contains("he"));
    assertTrue(words.contains("him"));
    assertTrue(words.contains("his"));
    assertTrue(words.contains("himself"));
    assertTrue(words.contains("she"));
    assertTrue(words.contains("her"));
    assertTrue(words.contains("hers"));
    assertTrue(words.contains("herself"));

    // defaults
    factory = (KeepWordFilterFactory) tokenFilterFactory("KeepWord");
    assertTrue(factory.getWords() == null);
    assertEquals(false, factory.isIgnoreCase());
  }
  
  /** Test that bogus arguments result in exception */
  public void testBogusArguments() throws Exception {
    IllegalArgumentException expected = expectThrows(IllegalArgumentException.class, () -> {
      tokenFilterFactory("KeepWord", "bogusArg", "bogusValue");
    });
    assertTrue(expected.getMessage().contains("Unknown parameters"));
  }
}