def test_abs(self):
a = IntNum(-1)
b = IntNum(0)
c = IntNum(1)
self.assertEquals(abs(a), abs(c))
self.assertEquals(abs(a) - abs(c), abs(b))
def test_xor(self):
a = IntNum(-234)
b = IntNum(432)
c = a ^ b
self.assertEquals(a, -234)
self.assertEquals(b, 432)
self.assertEquals(c, -234 ^ 432)
def test_ixor(self):
a = IntNum(-234)
b = IntNum(432)
a ^= b
b ^= a
a ^= b
self.assertEquals(a, 432)
self.assertEquals(b, -234)
def test_exceptions(self):
self.assertRaises(ZeroDivisionError, IntNum(1).__div__, 0)
IntNum(1) / 1 # make sure the above error is cleared
try: IntNum(1) / 0
except ZeroDivisionError, err:
self.assertEquals('divide by zero', str(err))
def test_cmp(self):
a = IntNum(-1)
b = IntNum(0)
c = IntNum(1)
self.assert_(a < b < c)
self.assert_(a <= b <= c)
self.assert_(c >= b >= a)
self.assert_(c > b > a)
self.assert_(a != b != c)
def test_to_from(self):
for i in self.legal_values:
self.assertEquals(i, int(IntNum(i)))
self.assertEquals(i, long(IntNum(i)))