'Sort columns.'

def test_sorting(self):

    sorted_data = self.founders.sort(col='first_name')
    self.assertEqual(sorted_data.title, 'Founders')
    first_row = sorted_data[0]
    second_row = sorted_data[2]
    third_row = sorted_data[1]
    expected_first = self.founders[1]
    expected_second = self.founders[2]
    expected_third = self.founders[0]
    self.assertEqual(first_row, expected_first)
    self.assertEqual(second_row, expected_second)
    self.assertEqual(third_row, expected_third)
