def test_check_sequence(self):
record1 = BinaryRecord(0, None, b'abc')
record2 = BinaryRecord(3, None, b'def')
records = [record1, record2]
BinaryRecord.check_sequence(records)
record2.address = 1
record2.update_checksum()
with pytest.raises(ValueError):
BinaryRecord.check_sequence(records)
record1.address = 3
record2.address = 0
record1.update_checksum()
record2.update_checksum()
with pytest.raises(ValueError):
BinaryRecord.check_sequence(records)
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'