def test_unsigned_hash():
"""test the unisgned_hash of tx"""
sender = "abcd"
receivers = ["fe"]
amounts = [1]
nonce = 1
fee = 100
tx = Transaction(sender, receivers, amounts, nonce, fee)
# get hashes
tx_signed_hash = tx.hash()
tx_unsigned_hash = tx.unsigned_hash()
# set signature
tx.signature = "abcd"
# assert signed hash has changed
assert tx.hash() != tx_signed_hash
# assert unsigned hash has not changed
assert tx.unsigned_hash() == tx_unsigned_hash
def test_tx_from_json():
"""test serialization and deserialization"""
sender = "abcd"
receivers = ["fe"]
amounts = [1]
fee = 100
t1 = Transaction(sender, receivers, amounts, fee)
t2 = transaction.from_json(t1.string())
assert t1.string() == t2.string()
assert t1.hash() == t2.hash()
assert t1.unsigned_hash() == t2.unsigned_hash()