/**
 * This file is part of the Meeds project (https://meeds.io/).
 *
 * Copyright (C) 2020 - 2025 Meeds Association contact@meeds.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.exoplatform.commons.utils;

import static org.junit.Assert.*;

import java.util.*;

import org.junit.Test;

public class TimeZoneUtilsTest {

  @Test
  public void testGetTimezones() {
    List<TimeZone> timezones = TimeZoneUtils.getTimeZones();
    assertNotNull(timezones);
    assertTrue("List timezones must cover at least 24 timezones", timezones.size() > 24);
    int oldOffset = -13 * 3600 * 1000;
    for (TimeZone timeZone : timezones) {
      assertTrue(timeZone.getRawOffset() > oldOffset);
      oldOffset = timeZone.getRawOffset();
    }
  }

  @Test
  public void testGetTimezoneDisplayName() {
    List<TimeZone> timezones = TimeZoneUtils.getTimeZones();
    for (TimeZone timeZone : timezones) {
      String timeZoneDisplay = TimeZoneUtils.getTimeZoneDisplay(timeZone, Locale.ENGLISH);
      assertNotNull(timeZoneDisplay);
      assertTrue(timeZoneDisplay.startsWith("(GMT"));
    }
  }

}
