gecko/extensions/java/xpcom/tests/TestVersionComparator.java

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Java XPCOM Bindings.
 *
 * The Initial Developer of the Original Code is
 * IBM Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2005
 * IBM Corporation. All Rights Reserved.
 *
 * Contributor(s):
 *   Javier Pedemonte (jhpedemonte@gmail.com)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

import org.mozilla.xpcom.VersionComparator;

public class TestVersionComparator {

  public static void main(String[] args) {
    String[] comparisons = {
        "0.9",
        "0.9.1",
        "1.0pre1",
        "1.0pre2",
        "1.0",
        "1.1pre",
        "1.1pre1a",
        "1.1pre1",
        "1.1pre10a",
        "1.1pre10",
        "1.1",
        "1.1.0.1",
        "1.1.1",
        "1.1.*",
        "1.*",
        "2.0",
        "2.1",
        "3.0.-1",
        "3.0"
    };

    String[] equality = {
        "1.1pre",
        "1.1pre0",
        "1.0+"
    };

    VersionComparator comp = new VersionComparator();

    // test comparisons in both directions
    for (int i = 0; i < comparisons.length - 1; i++) {
      int res = comp.compare(comparisons[i], comparisons[i + 1]);
      _assert(res < 0);

      res = comp.compare(comparisons[i + 1], comparisons[i]);
      _assert(res > 0);
    }

    // test equality in both directions
    for (int i = 0; i < equality.length - 1; i++) {
      int res = comp.compare(equality[i], equality[i + 1]);
      _assert(res == 0);

      res = comp.compare(equality[i + 1], equality[i]);
      _assert(res == 0);
    }

    System.out.println("-- passed");
  }

  private static void _assert(boolean expression) {
    if (!expression) {
      Throwable t = new Throwable();
      t.printStackTrace();
      System.exit(1);
    }
  }
}