def test_raise_exception_if_block_is_already_signed(self):
# Arrange
block = Block()
tx = Transaction(VERSION, Transaction.GUZI_CREATE, EMPTY_HASH, 0)
random_sign(block, REF_PUB_KEY, REF_PRIV_KEY)
# Act
with pytest.raises(FullBlockError):
block.add_transaction(tx)
def test_increase_transaction_count(self):
# Arrange
block = Block()
tx = Transaction(VERSION, Transaction.GUZI_CREATE, EMPTY_HASH, 0)
# Act
block.add_transaction(tx)
# Assert
assert len(block.transactions) == 1
def test_raise_exception_if_too_much_transactions_in_last_block(self):
# Arrange
block = Block()
tx = Transaction(VERSION, Transaction.PAYMENT, NEW_USER_PUB_KEY, 0)
for i in range(MAX_TX_IN_BLOCK):
block.add_transaction(
Transaction(VERSION, Transaction.PAYMENT, NEW_USER_PUB_KEY, i))
# Act
with pytest.raises(FullBlockError):
block.add_transaction(tx)
def test_shouldnt_add_existing_transaction_twice(self):
# Arrange
block = Block()
tx = Transaction(VERSION, Transaction.GUZI_CREATE, EMPTY_HASH, 0)
# Act
block.add_transaction(tx)
block.add_transaction(tx)
block.add_transaction(tx)
# Assert
assert len(block.transactions) == 1
def test_compute_merkle_root_1_tx(self):
"""
If there is only 1 transaction, merkle root should be :
hash(hash0 + hash0)
"""
# Arrange
tx = Transaction(VERSION, Transaction.GUZI_CREATE, NEW_USER_PUB_KEY, 0)
block = Block()
block.add_transaction(tx)
expected_merkle_root = guzi_hash(tx.to_hash() + tx.to_hash())
# Act
result = block.compute_merkle_root()
# Assert
assert result == expected_merkle_root