You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
19 lines
787 B
Python
19 lines
787 B
Python
from unittest import TestCase
|
|
|
|
from riscemu.helpers import *
|
|
|
|
|
|
class TestHelpers(TestCase):
|
|
|
|
def test_bind_twos_complement(self):
|
|
minval = -(1 << 31)
|
|
maxval = ((1 << 31)-1)
|
|
|
|
self.assertEqual(bind_twos_complement(minval), minval, "minval preserves")
|
|
self.assertEqual(bind_twos_complement(minval), minval, )
|
|
self.assertEqual(bind_twos_complement(maxval), maxval, "maxval preserves")
|
|
self.assertEqual(bind_twos_complement(minval - 1), maxval, "minval-1 wraps")
|
|
self.assertEqual(bind_twos_complement(maxval + 1), minval, "maxval+1 wraps")
|
|
self.assertEqual(bind_twos_complement(0), 0, "0 is 0")
|
|
self.assertEqual(bind_twos_complement(1), 1, "1 is 1")
|
|
self.assertEqual(bind_twos_complement(-1), -1, "-1 is -1") |