def test_convert_to_roman_tens_eq_4(self):
     self.assertEqual(roman_numbers.convert_to_roman_tens(4), "XL")
 def test_convert_to_roman_tens_eq_1(self):
     self.assertEqual(roman_numbers.convert_to_roman_tens(1), "X")
 def test_convert_to_roman_tens_gt_5(self):
     self.assertEqual(roman_numbers.convert_to_roman_tens(7), "LXX")
 def test_convert_to_roman_tens_eq_9(self):
     self.assertEqual(roman_numbers.convert_to_roman_tens(9), "XC")
 def test_convert_to_roman_tens_eq_5(self):
     self.assertEqual(roman_numbers.convert_to_roman_tens(5), "L")