def test_2019(self):
     assert 2019 == roman_num_translator.roman_to_arabic("MMXIX")
 def test_16(self):
     assert 16 == roman_num_translator.roman_to_arabic("XVI")
 def test_1545(self):
     assert 1545 == roman_num_translator.roman_to_arabic("MDXLV")
 def test_1111(self):
     assert 1111 == roman_num_translator.roman_to_arabic("MCXI")
 def test_1234(self):
     assert 1234 == roman_num_translator.roman_to_arabic("MCCXXXIV")