/*
 * 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;

import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.lucene.tests.analysis.CannedTokenStream;
import org.apache.lucene.tests.util.LuceneTestCase;

public class TestAnalyzerWrapper extends LuceneTestCase {

  public void testSourceDelegation() throws IOException {

    AtomicBoolean sourceCalled = new AtomicBoolean(false);

    Analyzer analyzer =
        new Analyzer() {
          @Override
          protected TokenStreamComponents createComponents(String fieldName) {
            return new TokenStreamComponents(
                r -> {
                  sourceCalled.set(true);
                },
                new CannedTokenStream());
          }
        };

    Analyzer wrapped =
        new AnalyzerWrapper(analyzer.getReuseStrategy()) {
          @Override
          protected Analyzer getWrappedAnalyzer(String fieldName) {
            return analyzer;
          }

          @Override
          protected TokenStreamComponents wrapComponents(
              String fieldName, TokenStreamComponents components) {
            return new TokenStreamComponents(
                components.getSource(), new LowerCaseFilter(components.getTokenStream()));
          }
        };

    try (TokenStream ts = wrapped.tokenStream("", "text")) {
      assert ts != null;
      assertTrue(sourceCalled.get());
    }
  }
}
