'Test the style 1 of time_format.'

def test_style_1(self):

    self.assertEqual(utils.time_format(0, 1), '0s')
    self.assertEqual(utils.time_format(28, 1), '28s')
    self.assertEqual(utils.time_format(92, 1), '1m')
    self.assertEqual(utils.time_format(300, 1), '5m')
    self.assertEqual(utils.time_format(660, 1), '11m')
    self.assertEqual(utils.time_format(3600, 1), '1h')
    self.assertEqual(utils.time_format(3725, 1), '1h')
    self.assertEqual(utils.time_format(86350, 1), '23h')
    self.assertEqual(utils.time_format(86800, 1), '1d')
    self.assertEqual(utils.time_format(130800, 1), '1d')
    self.assertEqual(utils.time_format(530800, 1), '6d')
