Aprog/test/net/sourceforge/aprog/tools/MathToolsTest.java

   1 /*
   2  *  The MIT License
   3  *
   4  *  Copyright 2011 Codist Monk.
   5  *
   6  *  Permission is hereby granted, free of charge, to any person obtaining a copy
   7  *  of this software and associated documentation files (the "Software"), to deal
   8  *  in the Software without restriction, including without limitation the rights
   9  *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  *  copies of the Software, and to permit persons to whom the Software is
  11  *  furnished to do so, subject to the following conditions:
  12  *
  13  *  The above copyright notice and this permission notice shall be included in
  14  *  all copies or substantial portions of the Software.
  15  *
  16  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  *  THE SOFTWARE.
  23  */
  24
  25 package net.sourceforge.aprog.tools;
  26
  27 import static org.junit.Assert.*;
  28
  29 import org.junit.Test;
  30
  31 /**
  32  * Automated tests using JUnit for {@link MathTools}.
  33  *
  34  * @author codistmonk (creation 2011-09-02)
  35  */
  36 public final class MathToolsTest {
  37
  38     // TODO add more tests
  39
  40     @Test
  41     public final void testGcd() {
  42         assertEquals(4L, MathTools.gcd(8L, 12L));
  43     }
  44
  45     @Test
  46     public final void testLcm() {
  47         assertEquals(24L, MathTools.lcm(6L, 8L));
  48     }
  49
  50     @Test
  51     public final void testFactorial() {
  52         assertEquals(6L, MathTools.factorial(3L));
  53     }
  54
  55     @Test
  56     public final void testNPk() {
  57         assertEquals(12L, MathTools.nPk(4L, 2L));
  58     }
  59
  60     @Test
  61     public void testMultichoose() {
  62         assertEquals(126L, MathTools.multichoose(5L, 5L));
  63     }
  64
  65     @Test
  66     public final void testNCk() {
  67         assertEquals(1L, MathTools.nCk(0L, 0L));
  68         assertEquals(1L, MathTools.nCk(4L, 0L));
  69         assertEquals(6L, MathTools.nCk(4L, 2L));
  70         assertEquals(1L, MathTools.nCk(4L, 4L));
  71     }
  72
  73 }