def test_rounds_to_three_decimal_places(self):
     table = SarpamTable(None)
     test_data = [0.12346]
     first_column = 0
     table.round_to_three_decimal_places(test_data, first_column)
     
     self.assertAlmostEquals(0.123, test_data[first_column]) 
    def test_no_data_return_when_none_value_rounded(self):
        table = SarpamTable(None)
        test_data = [None]
        first_column = 0
        table.round_to_three_decimal_places(test_data, first_column)
        
        self.assertEquals("--", test_data[first_column])