def test_encode_unsigned_integer(integer_value, value_bit_size,
data_byte_size):
if value_bit_size > data_byte_size * 8:
with pytest.raises(ValueError) as exception_info:
UnsignedIntegerEncoder(
value_bit_size=value_bit_size,
data_byte_size=data_byte_size,
)
return
encoder = UnsignedIntegerEncoder(
value_bit_size=value_bit_size,
data_byte_size=data_byte_size,
)
lower_bound, upper_bound = compute_unsigned_integer_bounds(value_bit_size)
if not is_integer(integer_value):
with pytest.raises(EncodingTypeError) as exception_info:
encoder(integer_value)
assert 'UnsignedInteger' in str(exception_info.value)
return
elif integer_value < lower_bound or integer_value > upper_bound:
with pytest.raises(ValueOutOfBounds):
encoder(integer_value)
return
if integer_value >= 0:
expected_value = zpad(int_to_big_endian(integer_value), data_byte_size)
else:
expected_value = fpad(int_to_big_endian(integer_value), data_byte_size)
encoded_value = encoder(integer_value)
assert encoded_value == expected_value
def test_multi_encoder():
encoder = MultiEncoder.as_encoder(encoders=(
UnsignedIntegerEncoder.as_encoder(value_bit_size=256),
StringEncoder.as_encoder(),
))
expected = decode_hex('0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000')
actual = encoder((0, b''))
assert actual == expected
def test_tuple_encoder():
encoder = TupleEncoder(encoders=(
UnsignedIntegerEncoder(value_bit_size=256),
ByteStringEncoder(),
))
expected = decode_hex(
'0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
) # noqa: E501
actual = encoder((0, b''))
assert actual == expected