def test_valid_checksum(self):
"""Test checksum creation and validation."""
for test in VALID_CHECKSUM:
hrp, _ = segwit_addr.bech32_decode(test)
self.assertIsNotNone(hrp)
pos = test.rfind('1')
test = test[:pos + 1] + chr(ord(test[pos + 1]) ^ 1) + test[pos + 2:]
hrp, _ = segwit_addr.bech32_decode(test)
self.assertIsNone(hrp)
def test_invalid_checksum(self):
"""Test validation of invalid checksums."""
for test in INVALID_CHECKSUM:
hrp, _ = segwit_addr.bech32_decode(test)
self.assertIsNone(hrp)