def test_nonce_in_tx_correct():
# test if the nonce is correct in the tx
w = wallet.generate_new_wallet()
t = Transaction(sender=w.get_address(),
receivers=["01"],
amounts=[1],
nonce=w.get_nonce(),
fee=100)
assert t.nonce == w.get_nonce()
tx_hash_old = ""
tx_sig_old = ""
for i in range(10):
# sign tx
w.sign_transaction(t)
# get sig
signature = t.get_signature()
# nonce gets bigger every signed tx
assert t.nonce == w.get_nonce() - 1
assert t.nonce == i
# make sure tx_signature changes
assert signature != tx_sig_old
# make sure tx_hash changes
assert t.hash() != tx_hash_old
# finally test if verify works
assert t.verify()
# save values for next iteration
tx_hash_old = t.hash()
tx_sig_old = signature
# assert that we counted correctly
assert w.get_nonce() == 10
def test_verify_tx():
"""
tests if a signed transaction can be validated
we just need the address for this, because address=public_key
"""
w = wallet.generate_new_wallet()
sender = w.get_address()
receivers = ["fe"]
amounts = [1]
fee = 100
t = Transaction(sender, receivers, amounts, fee)
w.sign_transaction(t)
assert cryptoutil.verify_transaction_sig(t, t.get_signature())
assert t.verify()