/** Some simple checks for the hashCode() method. */
@Test
public void testHashCode() {
TimeSeries s1 = new TimeSeries("Test");
TimeSeries s2 = new TimeSeries("Test");
assertEquals(s1, s2);
assertEquals(s1.hashCode(), s2.hashCode());
s1.add(new Day(1, 1, 2007), 500.0);
s2.add(new Day(1, 1, 2007), 500.0);
assertEquals(s1, s2);
assertEquals(s1.hashCode(), s2.hashCode());
s1.add(new Day(2, 1, 2007), null);
s2.add(new Day(2, 1, 2007), null);
assertEquals(s1, s2);
assertEquals(s1.hashCode(), s2.hashCode());
s1.add(new Day(5, 1, 2007), 111.0);
s2.add(new Day(5, 1, 2007), 111.0);
assertEquals(s1, s2);
assertEquals(s1.hashCode(), s2.hashCode());
s1.add(new Day(9, 1, 2007), 1.0);
s2.add(new Day(9, 1, 2007), 1.0);
assertEquals(s1, s2);
assertEquals(s1.hashCode(), s2.hashCode());
}
