mirror of
https://github.com/dashpay/dash.git
synced 2024-12-26 04:22:55 +01:00
9f4f52ae4e
68400d8b96 tests: Use explicit imports (practicalswift) Pull request description: Enable automatic detection of undefined names in Python tests scripts. Remove wildcard imports. Wildcard imports make it unclear which names are present in the namespace, confusing both readers and many automated tools. An additional benefit of not using wildcard imports in tests scripts is that readers of a test script then can infer the rough testing scope just by looking at the imports. Before this commit: ``` $ contrib/devtools/lint-python.sh | head -10 ./test/functional/feature_rbf.py:8:1: F403 'from test_framework.util import *' used; unable to detect undefined names ./test/functional/feature_rbf.py:9:1: F403 'from test_framework.script import *' used; unable to detect undefined names ./test/functional/feature_rbf.py:10:1: F403 'from test_framework.mininode import *' used; unable to detect undefined names ./test/functional/feature_rbf.py:15:12: F405 bytes_to_hex_str may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util ./test/functional/feature_rbf.py:17:58: F405 CScript may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util ./test/functional/feature_rbf.py:25:13: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util ./test/functional/feature_rbf.py:26:31: F405 satoshi_round may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util ./test/functional/feature_rbf.py:26:60: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util ./test/functional/feature_rbf.py:30:41: F405 satoshi_round may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util ./test/functional/feature_rbf.py:30:68: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util $ ``` After this commit: ``` $ contrib/devtools/lint-python.sh | head -10 $ ``` Tree-SHA512: 3f826d39cffb6438388e5efcb20a9622ff8238247e882d68f7b38609877421b2a8e10e9229575f8eb6a8fa42dec4256986692e92922c86171f750a0e887438d9
461 lines
19 KiB
Python
Executable File
461 lines
19 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# Copyright (c) 2015-2020 The Dash Core developers
|
|
# Distributed under the MIT software license, see the accompanying
|
|
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#
|
|
# Test deterministic masternodes
|
|
#
|
|
|
|
from decimal import Decimal
|
|
|
|
from test_framework.blocktools import create_block, create_coinbase, get_masternode_payment
|
|
from test_framework.messages import CCbTx, COIN, CTransaction, FromHex, ToHex, uint256_to_string
|
|
from test_framework.test_framework import BitcoinTestFramework
|
|
from test_framework.util import assert_equal, connect_nodes, force_finish_mnsync, get_bip9_status, p2p_port
|
|
|
|
class Masternode(object):
|
|
pass
|
|
|
|
class DIP3Test(BitcoinTestFramework):
|
|
def set_test_params(self):
|
|
self.num_initial_mn = 11 # Should be >= 11 to make sure quorums are not always the same MNs
|
|
self.num_nodes = 1 + self.num_initial_mn + 2 # +1 for controller, +1 for mn-qt, +1 for mn created after dip3 activation
|
|
self.setup_clean_chain = True
|
|
|
|
self.extra_args = ["-budgetparams=10:10:10"]
|
|
self.extra_args += ["-sporkkey=cP4EKFyJsHT39LDqgdcB43Y3YXjNyjb5Fuas1GQSeAtjnZWmZEQK"]
|
|
self.extra_args += ["-dip3params=135:150"]
|
|
|
|
|
|
def setup_network(self):
|
|
self.disable_mocktime()
|
|
self.add_nodes(1)
|
|
self.start_controller_node()
|
|
|
|
def start_controller_node(self):
|
|
self.log.info("starting controller node")
|
|
self.start_node(0, extra_args=self.extra_args)
|
|
for i in range(1, self.num_nodes):
|
|
if i < len(self.nodes) and self.nodes[i] is not None and self.nodes[i].process is not None:
|
|
connect_nodes(self.nodes[i], 0)
|
|
|
|
def stop_controller_node(self):
|
|
self.log.info("stopping controller node")
|
|
self.stop_node(0)
|
|
|
|
def restart_controller_node(self):
|
|
self.stop_controller_node()
|
|
self.start_controller_node()
|
|
|
|
def run_test(self):
|
|
self.log.info("funding controller node")
|
|
while self.nodes[0].getbalance() < (self.num_initial_mn + 3) * 1000:
|
|
self.nodes[0].generate(10) # generate enough for collaterals
|
|
self.log.info("controller node has {} dash".format(self.nodes[0].getbalance()))
|
|
|
|
# Make sure we're below block 135 (which activates dip3)
|
|
self.log.info("testing rejection of ProTx before dip3 activation")
|
|
assert(self.nodes[0].getblockchaininfo()['blocks'] < 135)
|
|
|
|
mns = []
|
|
|
|
# prepare mn which should still be accepted later when dip3 activates
|
|
self.log.info("creating collateral for mn-before-dip3")
|
|
before_dip3_mn = self.prepare_mn(self.nodes[0], 1, 'mn-before-dip3')
|
|
self.create_mn_collateral(self.nodes[0], before_dip3_mn)
|
|
mns.append(before_dip3_mn)
|
|
|
|
# block 150 starts enforcing DIP3 MN payments
|
|
self.nodes[0].generate(150 - self.nodes[0].getblockcount())
|
|
assert(self.nodes[0].getblockcount() == 150)
|
|
|
|
self.log.info("mining final block for DIP3 activation")
|
|
self.nodes[0].generate(1)
|
|
|
|
# We have hundreds of blocks to sync here, give it more time
|
|
self.log.info("syncing blocks for all nodes")
|
|
self.sync_blocks(self.nodes, timeout=120)
|
|
|
|
# DIP3 is fully enforced here
|
|
|
|
self.register_mn(self.nodes[0], before_dip3_mn)
|
|
self.start_mn(before_dip3_mn)
|
|
|
|
self.log.info("registering MNs")
|
|
for i in range(0, self.num_initial_mn):
|
|
mn = self.prepare_mn(self.nodes[0], i + 2, "mn-%d" % i)
|
|
mns.append(mn)
|
|
|
|
# start a few MNs before they are registered and a few after they are registered
|
|
start = (i % 3) == 0
|
|
if start:
|
|
self.start_mn(mn)
|
|
|
|
# let a few of the protx MNs refer to the existing collaterals
|
|
fund = (i % 2) == 0
|
|
if fund:
|
|
self.log.info("register_fund %s" % mn.alias)
|
|
self.register_fund_mn(self.nodes[0], mn)
|
|
else:
|
|
self.log.info("create_collateral %s" % mn.alias)
|
|
self.create_mn_collateral(self.nodes[0], mn)
|
|
self.log.info("register %s" % mn.alias)
|
|
self.register_mn(self.nodes[0], mn)
|
|
|
|
self.nodes[0].generate(1)
|
|
|
|
if not start:
|
|
self.start_mn(mn)
|
|
|
|
self.sync_all()
|
|
self.assert_mnlists(mns)
|
|
|
|
self.log.info("test that MNs disappear from the list when the ProTx collateral is spent")
|
|
spend_mns_count = 3
|
|
mns_tmp = [] + mns
|
|
dummy_txins = []
|
|
for i in range(spend_mns_count):
|
|
dummy_txin = self.spend_mn_collateral(mns[i], with_dummy_input_output=True)
|
|
dummy_txins.append(dummy_txin)
|
|
self.nodes[0].generate(1)
|
|
self.sync_all()
|
|
mns_tmp.remove(mns[i])
|
|
self.assert_mnlists(mns_tmp)
|
|
|
|
self.log.info("test that reverting the blockchain on a single node results in the mnlist to be reverted as well")
|
|
for i in range(spend_mns_count):
|
|
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
|
|
mns_tmp.append(mns[spend_mns_count - 1 - i])
|
|
self.assert_mnlist(self.nodes[0], mns_tmp)
|
|
|
|
self.log.info("cause a reorg with a double spend and check that mnlists are still correct on all nodes")
|
|
self.mine_double_spend(self.nodes[0], dummy_txins, self.nodes[0].getnewaddress(), use_mnmerkleroot_from_tip=True)
|
|
self.nodes[0].generate(spend_mns_count)
|
|
self.sync_all()
|
|
self.assert_mnlists(mns_tmp)
|
|
|
|
self.log.info("test mn payment enforcement with deterministic MNs")
|
|
for i in range(20):
|
|
node = self.nodes[i % len(self.nodes)]
|
|
self.test_invalid_mn_payment(node)
|
|
self.nodes[0].generate(1)
|
|
self.sync_all()
|
|
|
|
self.log.info("testing ProUpServTx")
|
|
for mn in mns:
|
|
self.test_protx_update_service(mn)
|
|
|
|
self.log.info("testing P2SH/multisig for payee addresses")
|
|
|
|
# Create 1 of 2 multisig
|
|
addr1 = self.nodes[0].getnewaddress()
|
|
addr2 = self.nodes[0].getnewaddress()
|
|
|
|
addr1Obj = self.nodes[0].getaddressinfo(addr1)
|
|
addr2Obj = self.nodes[0].getaddressinfo(addr2)
|
|
|
|
multisig = self.nodes[0].createmultisig(1, [addr1Obj['pubkey'], addr2Obj['pubkey']])['address']
|
|
self.update_mn_payee(mns[0], multisig)
|
|
found_multisig_payee = False
|
|
for i in range(len(mns)):
|
|
bt = self.nodes[0].getblocktemplate()
|
|
expected_payee = bt['masternode'][0]['payee']
|
|
expected_amount = bt['masternode'][0]['amount']
|
|
self.nodes[0].generate(1)
|
|
self.sync_all()
|
|
if expected_payee == multisig:
|
|
block = self.nodes[0].getblock(self.nodes[0].getbestblockhash())
|
|
cbtx = self.nodes[0].getrawtransaction(block['tx'][0], 1)
|
|
for out in cbtx['vout']:
|
|
if 'addresses' in out['scriptPubKey']:
|
|
if expected_payee in out['scriptPubKey']['addresses'] and out['valueSat'] == expected_amount:
|
|
found_multisig_payee = True
|
|
assert(found_multisig_payee)
|
|
|
|
self.log.info("testing reusing of collaterals for replaced MNs")
|
|
for i in range(0, 5):
|
|
mn = mns[i]
|
|
# a few of these will actually refer to old ProRegTx internal collaterals,
|
|
# which should work the same as external collaterals
|
|
new_mn = self.prepare_mn(self.nodes[0], mn.idx, mn.alias)
|
|
new_mn.collateral_address = mn.collateral_address
|
|
new_mn.collateral_txid = mn.collateral_txid
|
|
new_mn.collateral_vout = mn.collateral_vout
|
|
|
|
self.register_mn(self.nodes[0], new_mn)
|
|
mns[i] = new_mn
|
|
self.nodes[0].generate(1)
|
|
self.sync_all()
|
|
self.assert_mnlists(mns)
|
|
self.log.info("restarting MN %s" % new_mn.alias)
|
|
self.stop_node(new_mn.idx)
|
|
self.start_mn(new_mn)
|
|
self.sync_all()
|
|
|
|
self.log.info("testing masternode status updates")
|
|
# change voting address and see if changes are reflected in `masternode status` rpc output
|
|
mn = mns[0]
|
|
node = self.nodes[0]
|
|
old_dmnState = mn.node.masternode("status")["dmnState"]
|
|
old_voting_address = old_dmnState["votingAddress"]
|
|
new_voting_address = node.getnewaddress()
|
|
assert(old_voting_address != new_voting_address)
|
|
# also check if funds from payout address are used when no fee source address is specified
|
|
node.sendtoaddress(mn.rewards_address, 0.001)
|
|
node.protx('update_registrar', mn.protx_hash, "", new_voting_address, "")
|
|
node.generate(1)
|
|
self.sync_all()
|
|
new_dmnState = mn.node.masternode("status")["dmnState"]
|
|
new_voting_address_from_rpc = new_dmnState["votingAddress"]
|
|
assert(new_voting_address_from_rpc == new_voting_address)
|
|
# make sure payoutAddress is the same as before
|
|
assert(old_dmnState["payoutAddress"] == new_dmnState["payoutAddress"])
|
|
|
|
def prepare_mn(self, node, idx, alias):
|
|
mn = Masternode()
|
|
mn.idx = idx
|
|
mn.alias = alias
|
|
mn.is_protx = True
|
|
mn.p2p_port = p2p_port(mn.idx)
|
|
|
|
blsKey = node.bls('generate')
|
|
mn.fundsAddr = node.getnewaddress()
|
|
mn.ownerAddr = node.getnewaddress()
|
|
mn.operatorAddr = blsKey['public']
|
|
mn.votingAddr = mn.ownerAddr
|
|
mn.blsMnkey = blsKey['secret']
|
|
|
|
return mn
|
|
|
|
def create_mn_collateral(self, node, mn):
|
|
mn.collateral_address = node.getnewaddress()
|
|
mn.collateral_txid = node.sendtoaddress(mn.collateral_address, 1000)
|
|
mn.collateral_vout = -1
|
|
node.generate(1)
|
|
|
|
rawtx = node.getrawtransaction(mn.collateral_txid, 1)
|
|
for txout in rawtx['vout']:
|
|
if txout['value'] == Decimal(1000):
|
|
mn.collateral_vout = txout['n']
|
|
break
|
|
assert(mn.collateral_vout != -1)
|
|
|
|
# register a protx MN and also fund it (using collateral inside ProRegTx)
|
|
def register_fund_mn(self, node, mn):
|
|
node.sendtoaddress(mn.fundsAddr, 1000.001)
|
|
mn.collateral_address = node.getnewaddress()
|
|
mn.rewards_address = node.getnewaddress()
|
|
|
|
mn.protx_hash = node.protx('register_fund', mn.collateral_address, '127.0.0.1:%d' % mn.p2p_port, mn.ownerAddr, mn.operatorAddr, mn.votingAddr, 0, mn.rewards_address, mn.fundsAddr)
|
|
mn.collateral_txid = mn.protx_hash
|
|
mn.collateral_vout = -1
|
|
|
|
rawtx = node.getrawtransaction(mn.collateral_txid, 1)
|
|
for txout in rawtx['vout']:
|
|
if txout['value'] == Decimal(1000):
|
|
mn.collateral_vout = txout['n']
|
|
break
|
|
assert(mn.collateral_vout != -1)
|
|
|
|
# create a protx MN which refers to an existing collateral
|
|
def register_mn(self, node, mn):
|
|
node.sendtoaddress(mn.fundsAddr, 0.001)
|
|
mn.rewards_address = node.getnewaddress()
|
|
|
|
mn.protx_hash = node.protx('register', mn.collateral_txid, mn.collateral_vout, '127.0.0.1:%d' % mn.p2p_port, mn.ownerAddr, mn.operatorAddr, mn.votingAddr, 0, mn.rewards_address, mn.fundsAddr)
|
|
node.generate(1)
|
|
|
|
def start_mn(self, mn):
|
|
while len(self.nodes) <= mn.idx:
|
|
self.add_nodes(1)
|
|
extra_args = ['-masternodeblsprivkey=%s' % mn.blsMnkey]
|
|
self.start_node(mn.idx, extra_args = self.extra_args + extra_args)
|
|
force_finish_mnsync(self.nodes[mn.idx])
|
|
mn.node = self.nodes[mn.idx]
|
|
connect_nodes(mn.node, 0)
|
|
self.sync_all()
|
|
|
|
def spend_mn_collateral(self, mn, with_dummy_input_output=False):
|
|
return self.spend_input(mn.collateral_txid, mn.collateral_vout, 1000, with_dummy_input_output)
|
|
|
|
def update_mn_payee(self, mn, payee):
|
|
self.nodes[0].sendtoaddress(mn.fundsAddr, 0.001)
|
|
self.nodes[0].protx('update_registrar', mn.protx_hash, '', '', payee, mn.fundsAddr)
|
|
self.nodes[0].generate(1)
|
|
self.sync_all()
|
|
info = self.nodes[0].protx('info', mn.protx_hash)
|
|
assert(info['state']['payoutAddress'] == payee)
|
|
|
|
def test_protx_update_service(self, mn):
|
|
self.nodes[0].sendtoaddress(mn.fundsAddr, 0.001)
|
|
self.nodes[0].protx('update_service', mn.protx_hash, '127.0.0.2:%d' % mn.p2p_port, mn.blsMnkey, "", mn.fundsAddr)
|
|
self.nodes[0].generate(1)
|
|
self.sync_all()
|
|
for node in self.nodes:
|
|
protx_info = node.protx('info', mn.protx_hash)
|
|
mn_list = node.masternode('list')
|
|
assert_equal(protx_info['state']['service'], '127.0.0.2:%d' % mn.p2p_port)
|
|
assert_equal(mn_list['%s-%d' % (mn.collateral_txid, mn.collateral_vout)]['address'], '127.0.0.2:%d' % mn.p2p_port)
|
|
|
|
# undo
|
|
self.nodes[0].protx('update_service', mn.protx_hash, '127.0.0.1:%d' % mn.p2p_port, mn.blsMnkey, "", mn.fundsAddr)
|
|
self.nodes[0].generate(1)
|
|
|
|
def assert_mnlists(self, mns):
|
|
for node in self.nodes:
|
|
self.assert_mnlist(node, mns)
|
|
|
|
def assert_mnlist(self, node, mns):
|
|
if not self.compare_mnlist(node, mns):
|
|
expected = []
|
|
for mn in mns:
|
|
expected.append('%s-%d' % (mn.collateral_txid, mn.collateral_vout))
|
|
self.log.error('mnlist: ' + str(node.masternode('list', 'status')))
|
|
self.log.error('expected: ' + str(expected))
|
|
raise AssertionError("mnlists does not match provided mns")
|
|
|
|
def compare_mnlist(self, node, mns):
|
|
mnlist = node.masternode('list', 'status')
|
|
for mn in mns:
|
|
s = '%s-%d' % (mn.collateral_txid, mn.collateral_vout)
|
|
in_list = s in mnlist
|
|
if not in_list:
|
|
return False
|
|
mnlist.pop(s, None)
|
|
if len(mnlist) != 0:
|
|
return False
|
|
return True
|
|
|
|
def spend_input(self, txid, vout, amount, with_dummy_input_output=False):
|
|
# with_dummy_input_output is useful if you want to test reorgs with double spends of the TX without touching the actual txid/vout
|
|
address = self.nodes[0].getnewaddress()
|
|
|
|
txins = [
|
|
{'txid': txid, 'vout': vout}
|
|
]
|
|
targets = {address: amount}
|
|
|
|
dummy_txin = None
|
|
if with_dummy_input_output:
|
|
dummyaddress = self.nodes[0].getnewaddress()
|
|
unspent = self.nodes[0].listunspent(110)
|
|
for u in unspent:
|
|
if u['amount'] > Decimal(1):
|
|
dummy_txin = {'txid': u['txid'], 'vout': u['vout']}
|
|
txins.append(dummy_txin)
|
|
targets[dummyaddress] = float(u['amount'] - Decimal(0.0001))
|
|
break
|
|
|
|
rawtx = self.nodes[0].createrawtransaction(txins, targets)
|
|
rawtx = self.nodes[0].fundrawtransaction(rawtx)['hex']
|
|
rawtx = self.nodes[0].signrawtransactionwithwallet(rawtx)['hex']
|
|
self.nodes[0].sendrawtransaction(rawtx)
|
|
|
|
return dummy_txin
|
|
|
|
def mine_block(self, node, vtx=[], miner_address=None, mn_payee=None, mn_amount=None, use_mnmerkleroot_from_tip=False, expected_error=None):
|
|
bt = node.getblocktemplate()
|
|
height = bt['height']
|
|
tip_hash = bt['previousblockhash']
|
|
|
|
tip_block = node.getblock(tip_hash)
|
|
|
|
coinbasevalue = bt['coinbasevalue']
|
|
if miner_address is None:
|
|
miner_address = self.nodes[0].getnewaddress()
|
|
if mn_payee is None:
|
|
if isinstance(bt['masternode'], list):
|
|
mn_payee = bt['masternode'][0]['payee']
|
|
else:
|
|
mn_payee = bt['masternode']['payee']
|
|
# we can't take the masternode payee amount from the template here as we might have additional fees in vtx
|
|
|
|
# calculate fees that the block template included (we'll have to remove it from the coinbase as we won't
|
|
# include the template's transactions
|
|
bt_fees = 0
|
|
for tx in bt['transactions']:
|
|
bt_fees += tx['fee']
|
|
|
|
new_fees = 0
|
|
for tx in vtx:
|
|
in_value = 0
|
|
out_value = 0
|
|
for txin in tx.vin:
|
|
txout = node.gettxout(uint256_to_string(txin.prevout.hash), txin.prevout.n, False)
|
|
in_value += int(txout['value'] * COIN)
|
|
for txout in tx.vout:
|
|
out_value += txout.nValue
|
|
new_fees += in_value - out_value
|
|
|
|
# fix fees
|
|
coinbasevalue -= bt_fees
|
|
coinbasevalue += new_fees
|
|
|
|
if mn_amount is None:
|
|
realloc_info = get_bip9_status(self.nodes[0], 'realloc')
|
|
realloc_height = 99999999
|
|
if realloc_info['status'] == 'active':
|
|
realloc_height = realloc_info['since']
|
|
mn_amount = get_masternode_payment(height, coinbasevalue, realloc_height)
|
|
miner_amount = coinbasevalue - mn_amount
|
|
|
|
outputs = {miner_address: str(Decimal(miner_amount) / COIN)}
|
|
if mn_amount > 0:
|
|
outputs[mn_payee] = str(Decimal(mn_amount) / COIN)
|
|
|
|
coinbase = FromHex(CTransaction(), node.createrawtransaction([], outputs))
|
|
coinbase.vin = create_coinbase(height).vin
|
|
|
|
# We can't really use this one as it would result in invalid merkle roots for masternode lists
|
|
if len(bt['coinbase_payload']) != 0:
|
|
cbtx = FromHex(CCbTx(version=1), bt['coinbase_payload'])
|
|
if use_mnmerkleroot_from_tip:
|
|
if 'cbTx' in tip_block:
|
|
cbtx.merkleRootMNList = int(tip_block['cbTx']['merkleRootMNList'], 16)
|
|
else:
|
|
cbtx.merkleRootMNList = 0
|
|
coinbase.nVersion = 3
|
|
coinbase.nType = 5 # CbTx
|
|
coinbase.vExtraPayload = cbtx.serialize()
|
|
|
|
coinbase.calc_sha256()
|
|
|
|
block = create_block(int(tip_hash, 16), coinbase)
|
|
block.vtx += vtx
|
|
|
|
# Add quorum commitments from template
|
|
for tx in bt['transactions']:
|
|
tx2 = FromHex(CTransaction(), tx['data'])
|
|
if tx2.nType == 6:
|
|
block.vtx.append(tx2)
|
|
|
|
block.hashMerkleRoot = block.calc_merkle_root()
|
|
block.solve()
|
|
result = node.submitblock(ToHex(block))
|
|
if expected_error is not None and result != expected_error:
|
|
raise AssertionError('mining the block should have failed with error %s, but submitblock returned %s' % (expected_error, result))
|
|
elif expected_error is None and result is not None:
|
|
raise AssertionError('submitblock returned %s' % (result))
|
|
|
|
def mine_double_spend(self, node, txins, target_address, use_mnmerkleroot_from_tip=False):
|
|
amount = Decimal(0)
|
|
for txin in txins:
|
|
txout = node.gettxout(txin['txid'], txin['vout'], False)
|
|
amount += txout['value']
|
|
amount -= Decimal("0.001") # fee
|
|
|
|
rawtx = node.createrawtransaction(txins, {target_address: amount})
|
|
rawtx = node.signrawtransactionwithwallet(rawtx)['hex']
|
|
tx = FromHex(CTransaction(), rawtx)
|
|
|
|
self.mine_block(node, [tx], use_mnmerkleroot_from_tip=use_mnmerkleroot_from_tip)
|
|
|
|
def test_invalid_mn_payment(self, node):
|
|
mn_payee = self.nodes[0].getnewaddress()
|
|
self.mine_block(node, mn_payee=mn_payee, expected_error='bad-cb-payee')
|
|
self.mine_block(node, mn_amount=1, expected_error='bad-cb-payee')
|
|
|
|
if __name__ == '__main__':
|
|
DIP3Test().main()
|