'When the second date occurs before the first, we should always
get 0 minutes.'

def test_display_second_before_first(self):

    self.assertEqual(timesince(self.t, (self.t - self.onemicrosecond)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (self.t - self.onesecond)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (self.t - self.oneminute)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (self.t - self.onehour)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (self.t - self.oneday)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (self.t - self.oneweek)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (self.t - self.onemonth)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (self.t - self.oneyear)), '0\xa0minutes')
    self.assertEqual(timesince(self.t, ((self.t - (2 * self.oneday)) - (6 * self.onehour))), '0\xa0minutes')
    self.assertEqual(timesince(self.t, ((self.t - (2 * self.oneweek)) - (2 * self.oneday))), '0\xa0minutes')
    self.assertEqual(timesince(self.t, (((self.t - (2 * self.oneweek)) - (3 * self.onehour)) - (4 * self.oneminute))), '0\xa0minutes')
    self.assertEqual(timesince(self.t, ((self.t - (4 * self.oneday)) - (5 * self.oneminute))), '0\xa0minutes')
