* A basic check for the testPreviousStandardDate() method when the
* tick unit is 6 hours (just for the sake of having a multiple).
*/
public void testPreviousStandardDateHourB() {
MyDateAxis axis = new MyDateAxis("Hour");
Hour h0 = new Hour(12, 1, 4, 2007);
Hour h1 = new Hour(13, 1, 4, 2007);
// five dates to check...
Date d0 = new Date(h0.getFirstMillisecond());
Date d1 = new Date(h0.getFirstMillisecond() + 500L);
Date d2 = new Date(h0.getMiddleMillisecond());
Date d3 = new Date(h0.getMiddleMillisecond() + 500L);
Date d4 = new Date(h0.getLastMillisecond());
Date end = new Date(h1.getLastMillisecond());
DateTickUnit unit = new DateTickUnit(DateTickUnit.HOUR, 6);
axis.setTickUnit(unit);
// START: check d0 and d1