tests.py

import unittest

from romanos import RomanNumber

class RomanNumberTest(unittest.TestCase):

    def test_crear_numero_romano(self):
        uno_numero = RomanNumber(1)
        self.assertEqual(uno_numero.valor,1)
        self.assertEqual(uno_numero.cadena,"I")

        uno_cadena = RomanNumber('I')
        self.assertEqual(uno_cadena.valor,1)
        self.assertEqual(uno_cadena.cadena,'I')
        
        self.assertRaises(ValueError,RomanNumber,4000)
        self.assertRaises(ValueError,RomanNumber,0)

    def test_representacion_de_cadena(self):
        tres = RomanNumber(3)
        self.assertEqual(str(tres),"III")

    def test_comparaciones(self):
        uno = RomanNumber(1)
        otro_uno =RomanNumber(1)
        dos = RomanNumber(2)
        
        self.assertEqual(uno,1)
        self.assertEqual(uno,'I')
        self.assertEqual(uno,otro_uno)

        self.assertNotEqual(uno,dos)
        self.assertNotEqual(uno,'II')

    def test_suma(self):
        uno = RomanNumber(1)
        dos = RomanNumber(2)

        self.assertEqual(uno+dos,3)
        self.assertEqual(uno +3,4)
        self.assertEqual(dos+"VI",8)

        self.assertEqual(3+uno,4)
        self.assertEqual("VI"+dos,8)

    def test_resta(self):
        uno = RomanNumber(1)
        dos = RomanNumber(2)

        self.assertEqual(dos - uno, 1)
        self.assertEqual(dos - 1, 1)
        self.assertEqual(dos - "I",1)
        self.assertEqual(4 - dos,2)
        self.assertEqual("IV" - uno, 3)

    def test_multiplicacion(self):
        dos = RomanNumber(2)
        tres = RomanNumber(3)
        self.assertEqual(dos * dos, 4)
        self.assertEqual(dos * 3, 6)
        self.assertEqual(dos * 'II',4)

    
    def test_no_admitir_caracteres_extraños(self):
         self.assertRaises(ValueError,RomanNumber,"hola")

        

if __name__ == "__main__":
    unittest.main()