/*
 * 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.index;


import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.lucene.document.Document;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.InfoStream;
import org.apache.lucene.util.LuceneTestCase;

/** Tests indexwriter's infostream */
public class TestInfoStream extends LuceneTestCase {
  
  /** we shouldn't have test points unless we ask */
  public void testTestPointsOff() throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig iwc = new IndexWriterConfig(null);
    iwc.setInfoStream(new InfoStream() {
      @Override
      public void close() throws IOException {}

      @Override
      public void message(String component, String message) {
        assertFalse("TP".equals(component));
      }

      @Override
      public boolean isEnabled(String component) {
        assertFalse("TP".equals(component));
        return true;
      }
    });
    IndexWriter iw = new IndexWriter(dir, iwc);
    iw.addDocument(new Document());
    iw.close();
    dir.close();
  }
  
  /** but they should work when we need */
  public void testTestPointsOn() throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig iwc = new IndexWriterConfig(null);
    AtomicBoolean seenTestPoint = new AtomicBoolean();
    iwc.setInfoStream(new InfoStream() {
      @Override
      public void close() throws IOException {}

      @Override
      public void message(String component, String message) {
        if ("TP".equals(component)) {
          seenTestPoint.set(true);
        }
      }

      @Override
      public boolean isEnabled(String component) {
        return true;
      }
    });
    IndexWriter iw = new IndexWriter(dir, iwc);
    iw.enableTestPoints = true;
    iw.addDocument(new Document());
    iw.close();
    dir.close();
    assertTrue(seenTestPoint.get());
  }
}