def test_serialization():
from serialization import namedtuple_cls_registry
assert len(namedtuple_cls_registry) > 0
json_str = genesis_block.serialize()
deserialized_block = Block.deserialize(json_str)
assert hasattr(deserialized_block, 'mine')
assert deserialized_block.version == 0
def load_blockchain(self):
from models import CentralBank
try:
with open(self.BLOCKCHAIN_PATH) as f:
blocks_data = json.loads(f.read())
if not (isinstance(blocks_data, dict) or isinstance(blocks_data, list)):
raise Exception("blockchain.json file is not valid")
if isinstance(blocks_data, dict):
blocks_data = [blocks_data]
self.blockchain = 'pending'
self.central_bank = CentralBank.get_central_bank()
if not self.central_bank.has_valid_configuration():
raise Exception('central bank configuration is not properly set')
self.blockchain = BlockChain(self.central_bank.difficulty)
self.all_utxos = {}
for block_data in blocks_data:
block = Block.deserialize(block_data)
self.blockchain.append_block(block, mine_block=False)
for transaction in block.transactions:
for inp in transaction.inputs:
del self.all_utxos[inp.transaction_output_id]
for output in transaction.outputs:
self.all_utxos[output.id] = output
except Exception as exp:
print("Error occurred while loading blockchain")
print(exp)
self.blockchain = None
return
self.blockchain.print()
def test_serialize(self):
s = json.dumps(self.b1.serialize())
b = Block.deserialize(s)
assert (b.equals(self.b1))
def test_get_block(self):
response = get_json(self.app.get('block/1'))
block = Block.deserialize(response)
assert (block.equals(self.chain.chain[1]))
