def test_3_get_and_remove(self):
for block in self.blocks:
block.put()
for block in self.blocks:
new_block = Block.get(block.id)
self.assertEqual(new_block.id, block.id)
for block in self.blocks[:2]:
with self.assertRaisesRegex(Block.ChainOperationBlockedError, "can't remove: blocked by another block"):
block.remove()
self.assertCountEqual(Block.get_ids_list(), [block.id for block in self.blocks])
self.blocks[2].remove()
for block in self.blocks[:2]:
with self.assertRaisesRegex(Block.ChainOperationBlockedError, "can't remove: blocked by another block"):
block.remove()
self.blocks[3].remove()
self.assertCountEqual(Block.get_ids_list(), [block.id for block in self.blocks[:2]])
with self.assertRaisesRegex(Block.ChainOperationBlockedError, "can't remove: blocked by another block"):
self.blocks[0].remove()
self.blocks[1].remove()
self.blocks[0].remove()
for block in self.blocks:
with self.assertRaises(Block.DoesNotExist):
block.remove()
self.assertEqual(Block.get_ids_list(), [])
def test_no_database(self):
with self.assertRaisesRegex(pmpi.database.Database.InitialisationError, "initialise database first"):
Block.get_ids_list()
with self.assertRaisesRegex(pmpi.database.Database.InitialisationError, "initialise database first"):
Block.get(sha256(b'something').digest())
private_key = SigningKey.generate()
public_key = PublicKey.from_signing_key(private_key)
operations = [
Operation(OperationRev(), 'http://example0.com/', [public_key]),
Operation(OperationRev(), 'http://example1.com/', [public_key])
]
for op in operations:
sign_object(public_key, private_key, op)
block = Block.from_operations_list(BlockRev(), int(time.time()), operations)
block.mine()
sign_object(public_key, private_key, block)
with self.assertRaisesRegex(pmpi.database.Database.InitialisationError, "initialise database first"):
block.put()
with self.assertRaisesRegex(pmpi.database.Database.InitialisationError, "initialise database first"):
block.remove()
def setUp(self):
initialise_database('test_database_file')
self.private_key = SigningKey.generate()
self.public_key = PublicKey.from_signing_key(self.private_key)
# self.uuids = [uuid4() for _ in range(3)]
self.operations = [[
Operation(OperationRev(),'http://example0.com/v0/', [self.public_key]),
Operation(OperationRev(),'http://example1.com/v0/', [self.public_key])
]]
for op in self.operations[0]:
sign_object(self.public_key, self.private_key, op)
self.operations.append([
Operation(OperationRev.from_obj(self.operations[0][0]), 'http://example0.com/v1/', [self.public_key]),
Operation(OperationRev.from_obj(self.operations[0][1]), 'http://example1.com/v1/', [self.public_key]),
Operation(OperationRev(), 'http://example2.com/v0/', [self.public_key])
])
for op in self.operations[1]:
sign_object(self.public_key, self.private_key, op)
self.operations.append([
Operation(OperationRev.from_obj(self.operations[1][0]),'http://example0.com/v2/', [self.public_key]),
Operation(OperationRev.from_obj(self.operations[1][1]), 'http://example1.com/v2/', [self.public_key])
])
for op in self.operations[2]:
sign_object(self.public_key, self.private_key, op)
self.operations.append([
Operation(OperationRev.from_obj(self.operations[1][1]), 'http://alternative1.com/', [self.public_key]),
Operation(OperationRev.from_obj(self.operations[1][2]), 'http://alternative2.com/', [self.public_key])
])
for op in self.operations[3]:
sign_object(self.public_key, self.private_key, op)
timestamp = int(time.time()) - 100
self.blocks = [Block.from_operations_list(BlockRev(), timestamp, self.operations[0])]
self.blocks[0].mine()
sign_object(self.public_key, self.private_key, self.blocks[0])
self.blocks.append(
Block.from_operations_list(BlockRev.from_obj(self.blocks[0]), timestamp + 20, self.operations[1]))
self.blocks[1].mine()
sign_object(self.public_key, self.private_key, self.blocks[1])
self.blocks.append(
Block.from_operations_list(BlockRev.from_obj(self.blocks[1]), timestamp + 40, self.operations[2]))
self.blocks[2].mine()
sign_object(self.public_key, self.private_key, self.blocks[2])
self.blocks.append(
Block.from_operations_list(BlockRev.from_obj(self.blocks[1]), timestamp + 60, self.operations[3]))
self.blocks[3].mine()
sign_object(self.public_key, self.private_key, self.blocks[3])
def test_wrong_limit(self):
block = Block.from_operations_list(BlockRev(), int(time.time()), self.operations)
block.operations_limit = Block.MAX_OPERATIONS + 1
block.mine()
sign_object(self.public_key, self.private_key, block)
with self.assertRaisesRegex(Block.VerifyError, "operations_limit out of range"):
block.verify()
def test_too_much(self):
block = Block.from_operations_list(BlockRev(), int(time.time()), self.operations)
block.operations_limit = Block.MIN_OPERATIONS
block.mine()
sign_object(self.public_key, self.private_key, block)
with self.assertRaisesRegex(Block.VerifyError, "number of operations doesn't satisfy limitations"):
block.verify()
def test_unsigned_operation(self):
with self.assertRaisesRegex(Block.VerifyError, "at least one of the operations is not properly signed"):
self.block = Block.from_operations_list(self.block.previous_block_rev, self.block.timestamp, (
Operation(self.block.operations[0].previous_operation_rev,
'http://different.example.com/', self.block.operations[0].owners),
self.block.operations[1]
))
def test_only_one_genesis_block(self):
ops = self.add_operations()
blocks = [
Block.from_operations_list(BlockRev(), 42, [ops[1], ops[3], ops[4]]),
Block.from_operations_list(BlockRev(), 43, [ops[5], ops[7], ops[9]])
]
for block in blocks:
block.mine()
sign_object(self.public_keys[0], self.private_keys[0], block)
blocks[0].put()
for block in blocks:
with self.assertRaisesRegex(Block.GenesisBlockDuplicationError, "trying to create multiple genesis blocks"):
block.put()
def add_blocks(self, ops):
"""
create blocks:
blocks[0] -> blocks[1] -> blocks[2] -> blocks[3] -> blocks[5]
\-> blocks[4] -> blocks[6]
"""
start_time = 42
blocks = [Block.from_operations_list(BlockRev(), start_time, [ops[0], ops[1]])]
blocks[0].mine()
sign_object(self.public_keys[0], self.private_keys[0], blocks[0])
blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[0]), start_time + 10, [ops[2], ops[6]]))
blocks[1].mine()
sign_object(self.public_keys[0], self.private_keys[0], blocks[1])
blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[1]), start_time + 20, [ops[3], ops[5]]))
blocks[2].mine()
sign_object(self.public_keys[0], self.private_keys[0], blocks[2])
blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[2]), start_time + 30, [ops[8], ops[4]]))
blocks[3].mine()
sign_object(self.public_keys[0], self.private_keys[0], blocks[3])
blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[2]), start_time + 40, [ops[4], ops[7]]))
blocks[4].mine()
sign_object(self.public_keys[0], self.private_keys[0], blocks[4])
blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[3]), start_time + 50, [ops[7], ops[9]]))
blocks[5].mine()
sign_object(self.public_keys[0], self.private_keys[0], blocks[5])
blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[4]), start_time + 60, [ops[8], ops[9]]))
blocks[6].mine()
sign_object(self.public_keys[0], self.private_keys[0], blocks[6])
return blocks
def test_from_raw(self):
new_block = Block.from_raw_with_operations(self.block.raw_with_operations())
self.assertIsInstance(new_block, Block)
for attr in ('previous_block_rev', 'timestamp', 'operations_limit', 'difficulty',
'padding', 'signature'):
self.assertEqual(getattr(new_block, attr), getattr(self.block, attr))
self.assertEqual(new_block.operations_full_raw(), self.block.operations_full_raw())
self.assertEqual(new_block.public_key.der, self.block.public_key.der)
self.assertEqual(new_block.is_checksum_correct(), self.block.is_checksum_correct())
def setUp(self):
self.private_key = SigningKey.generate()
self.public_key = PublicKey.from_signing_key(self.private_key)
self.timestamp = int(time.time())
self.operations = (
Operation(OperationRev(), 'http://example1.com/', [self.public_key]),
Operation(OperationRev(), 'http://example2.com/', [self.public_key])
)
for op in self.operations:
sign_object(self.public_key, self.private_key, op)
self.block = Block.from_operations_list(BlockRev(), self.timestamp, self.operations)
self.block.mine()
sign_object(self.public_key, self.private_key, self.block)
def setUp(self):
initialise_database('test_database_file')
self.operations = [
Operation(OperationRev(), 'http://example.com/' + url, [PublicKey.from_signing_key(SigningKey.generate())])
for url in ('first/', 'second/')]
for op in self.operations:
sk = SigningKey.generate()
sign_object(PublicKey.from_signing_key(sk), sk, op)
block = Block.from_operations_list(BlockRev(), 42, self.operations)
block.mine()
sk = SigningKey.generate()
sign_object(PublicKey.from_signing_key(sk), sk, block)
block.put()
self.identifiers = [Identifier.from_operation(op) for op in self.operations]
def test_2_put(self):
self.blocks[0].put()
with self.assertRaisesRegex(Block.GenesisBlockDuplicationError, "trying to create multiple genesis blocks"):
self.blocks[0].put()
self.blocks[1].put()
with self.assertRaisesRegex(Block.DuplicationError, "object id already in the database"):
self.blocks[1].put()
self.blocks[2].put()
self.blocks[3].put()
revision_id_list = Block.get_ids_list()
self.assertEqual(len(revision_id_list), 4)
self.assertCountEqual(revision_id_list, [block.id for block in self.blocks])
def mint_block():
if len(ops) >= MIN_OPS_IN_BLOCK:
print("Preparing block with {} operations.".format(len(ops)))
blockchain = pmpi.core.get_blockchain()
rev = BlockRev.from_id(blockchain.head) if blockchain.max_depth > 0 else BlockRev()
block = Block.from_operations_list(rev, int(time.time()), ops)
block.difficulty = 10 # TODO difficulty!
block.mine()
self.user.sign_object(block)
block.verify()
print("Block minted. Sending.")
self.transport.write(b'BL' + block.raw_with_operations())
else:
print("There are not enough operations to mint a block")
for op in ops:
asyncio.ensure_future(operation_queue.put(op))
def test():
try:
os.remove('test_database_file')
except OSError:
pass
initialise_database('test_database_file')
obj_private_key = SigningKey.generate()
obj_public_key = PublicKey.from_signing_key(obj_private_key)
obj_uuids = [uuid4() for _ in range(3)]
obj_operations = [[
Operation(OperationRev(), 'http://example0.com/v0/', [obj_public_key]),
Operation(OperationRev(), 'http://example1.com/v0/', [obj_public_key])
]]
for op in obj_operations[0]:
sign_object(obj_public_key, obj_private_key, op)
obj_operations.append([
Operation(OperationRev.from_obj(obj_operations[0][0]), 'http://example0.com/v1/', [obj_public_key]),
Operation(OperationRev.from_obj(obj_operations[0][1]), 'http://example1.com/v1/', [obj_public_key]),
Operation(OperationRev(), 'http://example2.com/v0/', [obj_public_key])
])
for op in obj_operations[1]:
sign_object(obj_public_key, obj_private_key, op)
obj_operations.append([
Operation(OperationRev.from_obj(obj_operations[1][0]), 'http://example0.com/v2/', [obj_public_key]),
Operation(OperationRev.from_obj(obj_operations[1][1]), 'http://example1.com/v2/', [obj_public_key])
])
for op in obj_operations[2]:
sign_object(obj_public_key, obj_private_key, op)
obj_operations.append([
Operation(OperationRev.from_obj(obj_operations[1][1]), 'http://alternative1.com/', [obj_public_key]),
Operation(OperationRev.from_obj(obj_operations[1][2]), 'http://alternative2.com/', [obj_public_key])
])
for op in obj_operations[3]:
sign_object(obj_public_key, obj_private_key, op)
timestamp = int(time.time()) - 100
obj_blocks = [Block.from_operations_list(BlockRev(), timestamp, obj_operations[0])]
obj_blocks[0].mine()
sign_object(obj_public_key, obj_private_key, obj_blocks[0])
obj_blocks.append(
Block.from_operations_list(BlockRev.from_obj(obj_blocks[0]), timestamp + 20, obj_operations[1]))
obj_blocks[1].mine()
sign_object(obj_public_key, obj_private_key, obj_blocks[1])
obj_blocks.append(
Block.from_operations_list(BlockRev.from_obj(obj_blocks[1]), timestamp + 40, obj_operations[2]))
obj_blocks[2].mine()
sign_object(obj_public_key, obj_private_key, obj_blocks[2])
obj_blocks.append(
Block.from_operations_list(BlockRev.from_obj(obj_blocks[1]), timestamp + 60, obj_operations[3]))
obj_blocks[3].mine()
sign_object(obj_public_key, obj_private_key, obj_blocks[3])
for block in obj_blocks:
block.put()
for block in obj_blocks:
new_block = Block.get(block.id)
assert new_block.id == block.id
for block in obj_blocks[:2]:
try:
block.remove()
raise AssertionError
except Block.ChainOperationBlockedError:
pass
assert sorted(Block.get_ids_list()) == sorted([block.id for block in obj_blocks])
obj_blocks[2].remove()
for block in obj_blocks[:2]:
try:
block.remove()
raise AssertionError
except Block.ChainOperationBlockedError:
pass
obj_blocks[3].remove()
try:
obj_blocks[0].remove()
raise AssertionError
except Block.ChainOperationBlockedError:
pass
obj_blocks[1].remove()
obj_blocks[0].remove()
for block in obj_blocks:
try:
block.remove()
raise AssertionError
except Block.DoesNotExist:
pass
assert Block.get_ids_list() == []
close_database()
os.remove('test_database_file')
def test_mangled_raw(self):
raw = self.block.raw_with_operations()
with self.assertRaisesRegex(RawFormatError, "raw input too short"):
Block.from_raw_with_operations(raw[:-1])
with self.assertRaisesRegex(RawFormatError, "raw input too long"):
Block.from_raw_with_operations(raw + b'\x00')
with self.assertRaisesRegex(Block.VerifyError, "wrong signature"):
mangled_raw = bytearray(raw)
mangled_raw[-1] = 0
Block.from_raw_with_operations(mangled_raw).verify_id(self.block.id)
with self.assertRaisesRegex(Block.VerifyError, "wrong object id"):
Block.from_raw_with_operations(raw).verify_id(b'wrong hash')
with self.assertRaisesRegex(Block.VerifyError, "wrong object id"):
Block.from_raw_with_operations(raw).verify_id(sha256(b'wrong hash'))
with self.assertRaisesRegex(RawFormatError, "version number mismatch"):
Block.from_raw((2).to_bytes(4, 'big') + self.block.raw()[4:])
def test_block_not_signed(self):
block = Block.from_operations_list(BlockRev(), int(time.time()), self.operations)
with self.assertRaisesRegex(Block.VerifyError, "object is not signed"):
block.verify()
def test_1_get_from_empty(self):
with self.assertRaises(Block.DoesNotExist):
Block.get(self.blocks[0].id)
def test_0_empty(self):
self.assertEqual(len(Block.get_ids_list()), 0)
def process_block(self, raw_block):
block = Block.from_raw_with_operations(raw_block)
with patch.object(BlockChain, '_get_new_blocks', return_value=[block]):
pmpi.core.get_blockchain().update_blocks()