def testIsValidBlockJumpDifficulty(lastBlock, block):
jumpDifficulty = 10
block.dificulty = jumpDifficulty
block.hash = f'{"0" * jumpDifficulty}111abc'
with pytest.raises(Exception, match='difficulty must only adjust by 1'):
Block.isValidBlock(lastBlock, block)
def testMineBlockDicifultyLimitRaTE_1():
lastblock = Block(time.time_ns(), 'testLastHash', 'testHash', 'testData',
1, 0)
time.sleep(MINE_RATE / SEC)
mineBlock = Block.mineBlock(lastblock, "bar")
assert mineBlock.dificulty == 1
def testMineBlock():
lastBlock = Block.genesis()
data = 'test-data'
block = Block.mineBlock(lastBlock, data)
assert isinstance(block, Block)
assert block.data == data
assert block.lasthash == lastBlock.hash
assert HexToBinary(block.hash)[0:block.dificulty] == '0' * block.dificulty
def testGenesis():
genesis = Block.genesis()
assert isinstance(genesis, Block)
# uzyskujemy atrybut
for key, value in GENESIS_DATA.items():
getattr(genesis, key) == value
def msg(self, pubnub, msgObject):
print(f'\n-- Channel: {msgObject.channel} | Message:{msgObject.msg}')
if msgObject.channel == Channels['BLOCK']:
block = Block.from_json(msgObject.msg)
potentialChain = self.blockchain.chain[:]
potentialChain.append(block)
try:
self.blockchain.replaceChain(potentialChain)
self.transactionPool.clearTransaction(self.blockchain)
print('\n -- Succesful replacing the chain')
except Exception as e:
print(f'\n -- Did not replace chain:{e}')
elif msgObject.channel == Channels['TRANSACTION']:
transaction = Trasaction.from_json(msgObject.msg)
self.transactionPool.setTransaction(transaction)
print(f'\n-- Set the new transaction in the transaction pool')
def testIsValidBadProofOfWork(lastBlock, block):
block.hash = 'fff'
with pytest.raises(Exception,
match='proof of work requirement was not met'):
Block.isValidBlock(lastBlock, block)
def testIsValidBlockBadLastHash(lastBlock, block):
block.lasthash = 'evil_LastHash'
with pytest.raises(Exception, match='lastHash must be correct'):
Block.isValidBlock(lastBlock, block)
def testIsValidBlock(lastBlock, block):
Block.isValidBlock(lastBlock, block)
def block(lastBlock):
return Block.mineBlock(lastBlock, 'test-data')
def lastBlock():
return Block.genesis()
def testSlowlyMineBlock():
lastBlock = Block.mineBlock(Block.genesis(), 'foo')
time.sleep(MINE_RATE / SEC)
mineBlock = Block.mineBlock(lastBlock, 'bar')
assert mineBlock.dificulty == lastBlock.dificulty - 1
def testQuicklyMineBlock():
lastBlock = Block.mineBlock(Block.genesis(), 'foo')
mineBlock = Block.mineBlock(lastBlock, 'bar')
assert mineBlock.dificulty == lastBlock.dificulty + 1
def testIsValidBlockBadHash(lastBlock, block):
block.hash = '0000000000000000bbbabc'
with pytest.raises(Exception, match='block hash must be correct'):
Block.isValidBlock(lastBlock, block)