/*
 * 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.ja;

import java.io.IOException;
import java.io.StringReader;
import java.util.HashMap;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.tests.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.tests.util.StringMockResourceLoader;

/** Simple tests for {@link JapaneseKatakanaStemFilterFactory} */
public class TestJapaneseKatakanaStemFilterFactory extends BaseTokenStreamTestCase {
  public void testKatakanaStemming() throws IOException {
    JapaneseTokenizerFactory tokenizerFactory = new JapaneseTokenizerFactory(new HashMap<>());
    tokenizerFactory.inform(new StringMockResourceLoader(""));
    TokenStream tokenStream = tokenizerFactory.create(newAttributeFactory());
    ((Tokenizer) tokenStream).setReader(new StringReader("明後日パーティーに行く予定がある。図書館で資料をコピーしました。"));
    JapaneseKatakanaStemFilterFactory filterFactory =
        new JapaneseKatakanaStemFilterFactory(new HashMap<>());

    assertTokenStreamContents(
        filterFactory.create(tokenStream),
        new String[] {
          // パーティー should be stemmed
          "明後日",
          "パーティ",
          "に",
          "行く",
          "予定",
          "が",
          "ある",
          // コピー should not be stemmed
          "図書館",
          "で",
          "資料",
          "を",
          "コピー",
          "し",
          "まし",
          "た"
        });
  }

  /** Test that bogus arguments result in exception */
  public void testBogusArguments() throws Exception {
    IllegalArgumentException expected =
        expectThrows(
            IllegalArgumentException.class,
            () -> {
              new JapaneseKatakanaStemFilterFactory(
                  new HashMap<>() {
                    {
                      put("bogusArg", "bogusValue");
                    }
                  });
            });
    assertTrue(expected.getMessage().contains("Unknown parameters"));
  }
}
