def test_only_79_bytes() -> None:
fname = "block_1.bin"
filename = path.join(path.dirname(__file__), "test_data", fname)
header_bytes = open(filename, "rb").read()
header_bytes = header_bytes[:70]
with pytest.raises(IndexError):
BlockHeader.deserialize(header_bytes)
def deserialize(cls, data):
stream = bytesio_from_binarydata(data)
header = BlockHeader.deserialize(stream)
index = varint.decode(stream)
status = BlockStatus.from_bytes(stream.read(1), "little")
downloaded = bool(int.from_bytes(stream.read(1), "little"))
return cls(header, index, status, downloaded)
def deserialize(cls, data):
stream = bytesio_from_binarydata(data)
headers_num = varint.decode(stream)
headers = []
for x in range(headers_num):
header = BlockHeader.deserialize(stream)
stream.read(1)
headers.append(header)
return cls(headers)
def test_dataclasses_json_dict() -> None:
fname = "block_481824.bin"
filename = path.join(path.dirname(__file__), "test_data", fname)
block = open(filename, "rb").read()
# dataclass
block_data = Block.deserialize(block)
assert isinstance(block_data, Block)
# str
block_json_str = block_data.to_json()
assert isinstance(block_json_str, str)
assert block_data == Block.from_json(block_json_str)
# dict
block_dict = block_data.to_dict()
assert isinstance(block_dict, dict)
assert block_data == Block.from_dict(block_dict)
import json
datadir = path.join(path.dirname(__file__), "generated_files")
filename = path.join(datadir, "block_481824.json")
with open(filename, "w") as f:
json.dump(block_dict, f, indent=True)
block_header = block_data.header.serialize()
# dataclass
block_header_data = BlockHeader.deserialize(block_header)
assert isinstance(block_header_data, BlockHeader)
# str
block_header_s = block_header_data.to_json()
assert isinstance(block_header_s, str)
assert block_header_data == BlockHeader.from_json(block_header_s)
# dict
block_header_d = block_header_data.to_dict()
assert isinstance(block_header_d, dict)
assert block_header_data == BlockHeader.from_dict(block_header_d)
filename = path.join(datadir, "block_header_481824.json")
with open(filename, "w") as f:
json.dump(block_header_d, f, indent=True)
def deserialize(cls, data):
stream = bytesio_from_binarydata(data)
header = BlockHeader.deserialize(stream)
nonce = int.from_bytes(stream.read(8), "little")
short_ids = []
short_ids_length = varint.decode(stream)
for x in range(short_ids_length):
short_ids.append(stream.read(6)[::-1].hex())
prefilled_tx_list = []
prefilled_tx_num = varint.decode(stream)
for x in range(prefilled_tx_num):
tx_index = varint.decode(stream)
tx = Tx.deserialize(stream)
prefilled_tx_list.append((tx_index, tx))
return cls(
header=header,
nonce=nonce,
short_ids=short_ids,
prefilled_tx_list=prefilled_tx_list,
)