def test_hex_format(self):
blockchain_ref = make_blockchain()
outfile = BytesIO()
blockchain_ref.save_to_file(outfile)
outfile.seek(0)
blockchain = Blockchain(NEW_USER_PUB_KEY)
blockchain.from_file(outfile)
assert blockchain == blockchain_ref
def test_basic_ok(self):
# Arrange
blockchain = Blockchain(NEW_USER_PUB_KEY)
blockchain.new_block()
# Act
random_sign(blockchain.last_block())
# Assert
assert blockchain[0].is_signed() is True
def test_hex_format(self):
# Arrange
blockchain_ref = make_blockchain()
b = blockchain_ref.pack()
# Act
blockchain = Blockchain(NEW_USER_PUB_KEY)
blockchain.from_bytes(b)
# Assert
assert blockchain == blockchain_ref
def test_return_part_of_blockchain_at_second_contact(self):
# Arrange
blockchain = Blockchain(NEW_USER_PUB_KEY)
blockchain.new_block()
tx0 = Transaction(VERSION, Transaction.GUZI_CREATE, KEY_POOL[0]["pub"],
0)
tx1 = Transaction(VERSION, Transaction.GUZI_CREATE, KEY_POOL[1]["pub"],
0)
tx2 = Transaction(VERSION, Transaction.GUZI_CREATE, KEY_POOL[2]["pub"],
0)
tx3 = Transaction(VERSION, Transaction.GUZI_CREATE, KEY_POOL[3]["pub"],
0)
tx4 = Transaction(VERSION, Transaction.GUZI_CREATE, KEY_POOL[4]["pub"],
0)
blockchain[0].add_transactions([tx0, tx1, tx2])
random_sign(blockchain.last_block())
blockchain.new_block()
blockchain[0].add_transactions([tx3, tx4])
# Act
result = blockchain._reduce(KEY_POOL[3]["pub"])
# Assert
assert len(result) == 1
def test_transactions_are_the_same(self):
blockchain_ref = make_blockchain()
ref_transactions = blockchain_ref[0].transactions
outfile = BytesIO()
blockchain_ref.save_to_file(outfile)
outfile.seek(0)
blockchain = Blockchain(NEW_USER_PUB_KEY)
blockchain.from_file(outfile)
transactions = blockchain[0].transactions
assert len(transactions) == 3
assert transactions[0] == ref_transactions[0]
assert transactions[1] == ref_transactions[1]
assert transactions[2] == ref_transactions[2]
def test_signer_is_set(self):
bc = Blockchain(NEW_USER_PUB_KEY)
bc.new_block()
random_sign(bc.last_block())
assert bc.last_block().signer == REF_PUB_KEY
def test_raise_exception_if_last_block_not_signed(self):
# Arrange
blockchain = Blockchain(NEW_USER_PUB_KEY)
blockchain.new_block()
# Act
with pytest.raises(UnsignedPreviousBlockError):
blockchain.new_block()
def test_set_previous_block_hash(self):
# Arrange
blockchain = Blockchain(NEW_USER_PUB_KEY)
blockchain.new_block()
random_sign(blockchain.last_block())
# Act
blockchain.new_block()
# Assert
assert blockchain[1].previous_block_signature == blockchain[
0].signature
def test_empty_ko(self):
bc = Blockchain(NEW_USER_PUB_KEY)
result = bc.is_valid()
assert result is False