/*
 * Jalview - A Sequence Alignment Editor and Viewer (2.11.2.2)
 * Copyright (C) 2022 The Jalview Authors
 * 
 * This file is part of Jalview.
 * 
 * Jalview is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License 
 * as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *  
 * Jalview 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
 * The Jalview Authors are detailed in the 'AUTHORS' file.
 */
package jalview.util;

import static org.testng.Assert.assertEquals;

import org.testng.annotations.Test;

public class MathUtilsTest
{
  @Test(groups = "Functional")
  public void testGcd()
  {
    assertEquals(MathUtils.gcd(0, 0), 0);
    assertEquals(MathUtils.gcd(0, 1), 1);
    assertEquals(MathUtils.gcd(1, 0), 1);
    assertEquals(MathUtils.gcd(1, 1), 1);
    assertEquals(MathUtils.gcd(1, -1), 1);
    assertEquals(MathUtils.gcd(-1, 1), 1);
    assertEquals(MathUtils.gcd(2, 3), 1);
    assertEquals(MathUtils.gcd(4, 2), 2);
    assertEquals(MathUtils.gcd(2, 4), 2);
    assertEquals(MathUtils.gcd(2, -4), 2);
    assertEquals(MathUtils.gcd(-2, 4), 2);
    assertEquals(MathUtils.gcd(-2, -4), 2);
    assertEquals(MathUtils.gcd(2 * 3 * 5 * 7 * 11, 3 * 7 * 13 * 17), 3 * 7);
  }
}
