/**
 * 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.hadoop.yarn.server.timelineservice.reader;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;

import java.util.List;

import org.junit.Test;

/**
 * Tests helper methods in {@link TimelineReaderUtils}.
 */
public class TestTimelineReaderUtils {

  @Test
  public void testSplitUsingEscapeAndDelimChar() throws Exception {
    List<String> list =
        TimelineReaderUtils.split("*!cluster!*!b**o***!xer!oozie**", '!', '*');
    String[] arr = new String[list.size()];
    arr = list.toArray(arr);
    assertArrayEquals(new String[] {"!cluster", "!b*o*!xer", "oozie*"}, arr);
    list = TimelineReaderUtils.split("*!cluster!*!b**o***!xer!!", '!', '*');
    arr = new String[list.size()];
    arr = list.toArray(arr);
    assertArrayEquals(new String[] {"!cluster", "!b*o*!xer", "", ""}, arr);
  }

  @Test
  public void testJoinAndEscapeStrings() throws Exception {
    assertEquals("*!cluster!*!b**o***!xer!oozie**",
        TimelineReaderUtils.joinAndEscapeStrings(
            new String[] {"!cluster", "!b*o*!xer", "oozie*"}, '!', '*'));
    assertEquals("*!cluster!*!b**o***!xer!!",
        TimelineReaderUtils.joinAndEscapeStrings(
            new String[] {"!cluster", "!b*o*!xer", "", ""}, '!', '*'));
    assertNull(TimelineReaderUtils.joinAndEscapeStrings(
        new String[] {"!cluster", "!b*o*!xer", null, ""}, '!', '*'));
  }
}