public void test_difference_hours() { Date d1 = Dates.newDate(2010, 1, 1, 12, 30, 0); Date d2 = Dates.newDate(2010, 1, 1, 10, 0, 0); assertEquals(2, Dates.differenceHours(d1, d2)); Date d3 = Dates.newDate(2010, 1, 1, 12, 30, 0); assertEquals(0, Dates.differenceHours(d1, d3)); }