/** Tests the equals method. */
  public void testEquals() {
    TimePeriodValues s1 = new TimePeriodValues("Time Series 1");
    TimePeriodValues s2 = new TimePeriodValues("Time Series 2");
    boolean b1 = s1.equals(s2);
    assertFalse("b1", b1);

    s2.setKey("Time Series 1");
    boolean b2 = s1.equals(s2);
    assertTrue("b2", b2);

    // domain description
    s1.setDomainDescription("XYZ");
    assertFalse(s1.equals(s2));
    s2.setDomainDescription("XYZ");
    assertTrue(s1.equals(s2));

    // domain description - null
    s1.setDomainDescription(null);
    assertFalse(s1.equals(s2));
    s2.setDomainDescription(null);
    assertTrue(s1.equals(s2));

    // range description
    s1.setRangeDescription("XYZ");
    assertFalse(s1.equals(s2));
    s2.setRangeDescription("XYZ");
    assertTrue(s1.equals(s2));

    // range description - null
    s1.setRangeDescription(null);
    assertFalse(s1.equals(s2));
    s2.setRangeDescription(null);
    assertTrue(s1.equals(s2));

    RegularTimePeriod p1 = new Day();
    RegularTimePeriod p2 = p1.next();
    s1.add(p1, 100.0);
    s1.add(p2, 200.0);
    boolean b3 = s1.equals(s2);
    assertFalse("b3", b3);

    s2.add(p1, 100.0);
    s2.add(p2, 200.0);
    boolean b4 = s1.equals(s2);
    assertTrue("b4", b4);
  }