def test_basic_simenv():
network = Network(num_nodes=4, simenv=True)
network.connect_nodes()
network.normvariate_base_latencies()
network.start()
network.run(5)
r = network.check_consistency()
assert_maxrounds(r)
assert_heightdistance(r)
assert_blocktime(r, 0.5)
def test_basic_singlenode():
network = Network(num_nodes=1, simenv=True)
network.connect_nodes()
network.normvariate_base_latencies()
network.start()
network.run(5)
r = network.check_consistency()
assert_maxrounds(r)
assert_heightdistance(r)
assert_blocktime(r, 1.5)
def test_transactions():
sim_time = 5
num_txs = 2
_num_initial_blocks_orig = ConsensusManager.num_initial_blocks
num_initial_blocks = 2
ConsensusManager.num_initial_blocks = num_initial_blocks
network = Network(num_nodes=4, simenv=True)
network.connect_nodes()
network.normvariate_base_latencies()
app = network.nodes[0]
chainservice = app.services.chainservice
def cb(blk):
log.DEV('ON NEW HEAD', blk=blk)
if blk.number >= num_initial_blocks and blk.number < num_initial_blocks + num_txs:
if blk.number > num_initial_blocks:
assert blk.num_transactions() == 1
sender = chainservice.chain.coinbase
to = 'x' * 20
nonce = chainservice.chain.head.get_nonce(sender)
log.DEV('CREATING TX', nonce=nonce)
gas = 21000
gasprice = 1
value = 1
assert chainservice.chain.head.get_balance(sender) > gas * gasprice + value
tx = Transaction(nonce, gasprice, gas, to, value, data='')
app.services.accounts.sign_tx(sender, tx)
assert tx.sender == sender
success = chainservice.add_transaction(tx)
chainservice.on_new_head_cbs.append(cb)
network.start()
network.run(sim_time)
r = network.check_consistency()
print r
expected_head_number = num_initial_blocks + num_txs
assert chainservice.chain.head.number == expected_head_number
assert_maxrounds(r)
assert_heightdistance(r, max_distance=1)
assert_blocktime(r, 1.5)
# set to old value
ConsensusManager.num_initial_blocks = _num_initial_blocks_orig