content: /*
   * 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.ambari.server.utils;
  
  import java.text.SimpleDateFormat;
  import java.util.Calendar;
  import java.util.Date;
  import java.util.TimeZone;
  
  import org.junit.Test;
  
  import junit.framework.Assert;
  
  public class TestDateUtils {
  
    @Test
    public void testConvertToReadableTime() throws Exception {
      Long timestamp = 1389125737000L;
      String readableTime = DateUtils.convertToReadableTime(timestamp);
  
      // expected format with tz set to utc
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
      sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
  
      //parse using formatter with TZ=local and format using above formatter with TZ=UTC
      Assert.assertEquals("2014-01-07 20:15:37",
          sdf.format(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(readableTime)));
    }
  
    @Test
    public void testConvertToDate() throws Exception {
      String time = "2013-11-18T14:29:29-0000";
      Date date = DateUtils.convertToDate(time);
      Assert.assertNotNull(date);
      Calendar calendar = Calendar.getInstance();
      calendar.setTimeZone(TimeZone.getTimeZone("UTC"));
      calendar.set(Calendar.YEAR, 2013);
      calendar.set(Calendar.MONTH, Calendar.NOVEMBER);
      calendar.set(Calendar.DAY_OF_MONTH, 18);
      calendar.set(Calendar.HOUR_OF_DAY, 14);
      calendar.set(Calendar.MINUTE, 29);
      calendar.set(Calendar.SECOND, 29);
      calendar.set(Calendar.MILLISECOND, 0);
      Assert.assertEquals(0, date.compareTo(calendar.getTime()));
    }
  
    @Test
    public void testGetDateDifferenceInMinutes() throws Exception {
      Calendar calendar = Calendar.getInstance();
      calendar.setTimeZone(TimeZone.getTimeZone("UTC"));
      calendar.set(Calendar.YEAR, 2013);
      calendar.set(Calendar.MONTH, Calendar.NOVEMBER);
      calendar.set(Calendar.DAY_OF_MONTH, 18);
      calendar.set(Calendar.HOUR_OF_DAY, 14);
      calendar.set(Calendar.MINUTE, 49);
      calendar.set(Calendar.SECOND, 29);
      calendar.set(Calendar.MILLISECOND, 0);
      String time = "2013-11-18T14:29:29-0000";
      Date date = DateUtils.convertToDate(time);
      Long diff = (Math.abs(date.getTime() - calendar.getTimeInMillis())) / (60 * 1000) % 60;
      Assert.assertEquals(Long.valueOf(20L).longValue(), diff.longValue());
    }
  }
  