text: import pytest
  
  from .. import Rumetr
  
  
  @pytest.mark.parametrize('input, expected', [
      ('0', '0.00'),
      ('1', '1.00'),
      ('1.2', '1.20'),
      ('1.20', '1.20'),
      ('1.205000', '1.20'),
      ('1.208000', '1.21'),
  ])
  def test_rouding_decimal_numbers(input, expected):
      assert Rumetr._format_decimal(input) == expected
  