def test_integrity_modified_nonce(self):
block = Block(timestamp, transaction, index, previous_hash)
block.mine_block(2)
block.nonce = -1 # Pray it doesnt it the correct nonce...
self.assertNotEqual(block.currentHash, block.calculate_hash())
def test_integrity_modified_previous_hash(self):
block = Block(timestamp, transaction, index, previous_hash)
block.mine_block(2)
block.previousHash = "wrongHash"
self.assertNotEqual(block.currentHash, block.calculate_hash())
def test_integrity_modified_timestamp(self):
block = Block(timestamp, transaction, index, previous_hash)
block.mine_block(2)
block.timestamp = datetime.now()
self.assertNotEqual(block.currentHash, block.calculate_hash())
def test_integrity_modified_transaction_list_null(self):
block = Block(timestamp, [transaction, Transaction(from_address, to_address, amount, node_identifier)], index, previous_hash)
block.mine_block(2)
block.transactions = None
self.assertNotEqual(block.currentHash, block.calculate_hash())
def test_mining_correct_difficulty(self):
block = Block(timestamp, transaction, index, previous_hash)
block.mine_block(difficulty)
self.assertEqual(block.currentHash[0:difficulty], "".join((["0"] * difficulty)))