def test__get_checksum(self):
record = BinaryRecord(0, None, b'Hello, World!')
assert hex(record._get_checksum()) == '0x69'
record.checksum = None
assert hex(record._get_checksum()) == '0x69'
record = MotorolaRecord(0, MotorolaTag.DATA_16, b'Hello, World!')
assert hex(record._get_checksum()) == '0x86'
record.checksum = None
assert hex(record._get_checksum()) == '0x86'
record = IntelRecord(0, IntelTag.DATA, b'Hello, World!')
assert hex(record._get_checksum()) == '0x8a'
record.checksum = None
assert hex(record._get_checksum()) == '0x8a'
def test_update_checksum(self):
record = BinaryRecord(0, None, b'Hello, World!')
record.checksum = None
record.update_checksum()
assert str(record) == '48656C6C6F2C20576F726C6421'
assert hex(record.checksum or -1) == '0x69'
record = MotorolaRecord(0, MotorolaTag.DATA_16, b'Hello, World!')
record.checksum = None
record.update_checksum()
assert str(record) == 'S110000048656C6C6F2C20576F726C642186'
assert hex(record.checksum or -1) == '0x86'
record = IntelRecord(0, IntelTag.DATA, b'Hello, World!')
record.checksum = None
record.update_checksum()
assert str(record) == ':0D00000048656C6C6F2C20576F726C64218A'
assert hex(record.checksum or -1) == '0x8a'
def test_check(self):
with pytest.raises(ValueError):
Record(-1, None, b'Hello, World!').check()
record = Record(0, None, b'')
record.data = None
with pytest.raises(ValueError):
record.check()
record = Record(0, None, b'Hello, World!')
record.checksum = None
record.check()
record = Record(0, None, b'Hello, World!')
record.checksum = -1
with pytest.raises(ValueError):
record.check()
record = Record(0, None, b'Hello, World!')
record.checksum = 256
with pytest.raises(ValueError):
record.check()
record = Record(0, None, b'')
record.checksum ^= 0xFF
with pytest.raises(ValueError):
record.check()
record = Record(0, None, b'')
record.tag = -1
with pytest.raises(ValueError):
record.check()
record = Record(0, None, b'')
record.count = -1
with pytest.raises(ValueError):
record.check()