def test_init(self):
r = Racional()
self.assertEqual(r.num, 0)
self.assertEqual(r.den, 1)
r = Racional(3, 2)
self.assertEqual(r.num, 3)
self.assertEqual(r.den, 2)
def test_add(self):
r = Racional() + Racional(3)
self.assertEqual(r.num, 3)
self.assertEqual(r.den, 1)
r = Racional(3, 2) + Racional(3)
self.assertEqual(r.num, 9)
self.assertEqual(r.den, 2)
def test_entero(self):
r = Racional(6, 2)
self.assertEqual(r.entero, 3)
r = Racional(6, 7)
self.assertRaises(ValueError, lambda: r.entero)
def test_den_not_equal_one(self):
r = Racional(3, 2)
assert r.__str__() == '3/2'
def test_str(self):
r = Racional()
self.assertEqual(str(r), '(0/1)')
r = Racional(3, 2)
self.assertEqual(str(r), '(3/2)')
def test_div_if_r2_zero(self):
r1 = Racional(1, 2)
r2 = Racional()
d = r1 / r2
assert d == 'Error'
def test_den_equal_one(self):
r = Racional(3)
assert r.__str__() == '3'
def test_div(self):
r1 = Racional(3, 2)
r2 = Racional(1, 2)
d = r1 / r2
assert d.__str__() == '3'
def test_div_if_r1_zero(self):
r1 = Racional()
r2 = Racional(1, 2)
d = r1 / r2
assert d.__str__() == '0'
def test_mul_zero(self):
r1 = Racional(3, 2)
r2 = Racional(0)
m = r1 * r2
assert m.__str__() == '0'
def test_mul(self):
r1 = Racional(3, 2)
r2 = Racional(1, 2)
m = r1 * r2
assert m.__str__() == '3/4'
def test_sub(self):
r1 = Racional(3, 2)
r2 = Racional(1, 2)
s = r1 - r2
assert s.__str__() == '1'
def test_add(self):
r1 = Racional(1, 2)
r2 = Racional(3, 2)
a = r1 + r2
assert a.__str__() == '2'
def test_str(self):
r = Racional(1, 2)
assert r.__str__() == '1/2'