def test_index_higher_than_15_bits(self):
hash = '000000000000000000000000' + \
'aaaaaaaaaaaaaaaa000000000000000000000000'
dont_ignore_low_values = int('00000001', 16)
self.assertEqual(checksum(hash, dont_ignore_low_values),
0xaaaaaaaaaaaa8001)
ignore_high_values = int('10000000', 16)
self.assertEqual(checksum(hash, ignore_high_values),
0xaaaaaaaaaaaa8000)
def test_drop_high(self):
hash = 'ffffffffffffffffffffffff' + \
'aaaaaaaaaaaaaaaa' + \
'000000000000000000000000'
index = 0
self.assertEqual(checksum(hash, index), 0xaaaaaaaaaaaa8000)
hash = 'ffffffffffffffffffffffff' + \
'aaaaaaaaaaaaaaaa' + \
'000000000000000000000000'
self.assertEqual(checksum(hash, index), 0xaaaaaaaaaaaa8000)
def test_pattern(self):
hash = '000000000000000000000000' + \
'01234567aaaaaaaa' + \
'ffffffffffffffffffffffff'
index = int('89abcdef', 16)
self.assertEqual(hex(checksum(hash, index)), '0x1234567aaaacdef')
def test_index(self):
hash = 'ffffffffffffffffffffffff' + \
'aaaaaaaaaaaaaaaa000000000000000000000000'
index = 1
self.assertEqual(checksum(hash, index), 0xaaaaaaaaaaaa8001)
def test_all_zeros(self):
hash = '000000000000000000000000' + \
'0000000000000000' + \
'000000000000000000000000'
index = int('00000000', 16)
self.assertEqual(checksum(hash, index), 0)
def test_all_ones(self):
hash = 'ffffffffffffffffffffffff' + \
'ffffffffffffffff' + \
'ffffffffffffffffffffffff'
index = int('ffffffff', 16)
self.assertEqual(checksum(hash, index), 0xffffffffffffffff)