numberkittest.java

JGAP是一种遗传算法和遗传规划的组成部分提供了一个Java框架。它提供了基本的遗传机制

/*
 * This file is part of JGAP.
 *
 * JGAP offers a dual license model containing the LGPL as well as the MPL.
 *
 * For licensing information please see the file license.txt included with JGAP
 * or have a look at the top of class org.jgap.Chromosome which representatively
 * includes the JGAP license policy applicable for any file delivered with JGAP.
 */
package org.jgap.util;

import org.jgap.*;

import junit.framework.*;

/**
 * Tests the NumberKit class.
 *
 * @author Klaus Meffert
 * @since 3.3.3
 */
public class NumberKitTest
    extends JGAPTestCase {
  /** String containing the CVS revision. Read out via reflection!*/
  private final static String CVS_REVISION = "$Revision: 1.1 $";

  public static Test suite() {
    return new TestSuite(NumberKitTest.class);
  }

  public NumberKitTest() {
  }

  public void testNiceDecimalNumber_0()
      throws Exception {
    double d = 12d;
    String s = NumberKit.niceDecimalNumber(d, 2);
    assertEquals("12.0", s);/**@todo this is not an optimal result*/
  }

  public void testNiceDecimalNumber_1()
      throws Exception {
    double d = 12.123d;
    String s = NumberKit.niceDecimalNumber(d, 2);
    assertEquals("12.12", s);
    d = 12.127d;
    s = NumberKit.niceDecimalNumber(d, 2);
    assertEquals("12.12", s);
  }

  public void testNiceDecimalNumber_2()
      throws Exception {
    double d = 0d;
    String s = NumberKit.niceDecimalNumber(d, 2);
    assertEquals("0.0", s);
  }

  public void testNiceDecimalNumber_3()
      throws Exception {
    double d = 127.98765d;
    String s = NumberKit.niceDecimalNumber(d, 2);
    assertEquals("127.98", s);
    s = NumberKit.niceDecimalNumber(d, 3);
    assertEquals("127.987", s);
    s = NumberKit.niceDecimalNumber(d, 0);
    assertEquals("127", s);
    s = NumberKit.niceDecimalNumber(d, 1);
    assertEquals("127.9", s);
    s = NumberKit.niceDecimalNumber(d, 6);
    assertEquals("127.98765", s);
  }

}