be16f80abc
Any projects which want to use Hush code from now on will need to be licensed as GPLv3 or we will send the lawyers: https://www.softwarefreedom.org/ Notably, Komodo (KMD) is licensed as GPLv2 and is no longer compatible to receive code changes, without causing legal issues. MIT projects, such as Zcash, also cannot pull in changes from the Hush Full Node without permission from The Hush Developers, which may in some circumstances grant an MIT license on a case-by-case basis.
86 lines
3.3 KiB
Python
Executable File
86 lines
3.3 KiB
Python
Executable File
#!/usr/bin/env python2
|
|
# Copyright (c) 2018 The Zcash developers
|
|
# Distributed under the GPLv3 software license, see the accompanying
|
|
# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
|
|
|
|
from test_framework.test_framework import BitcoinTestFramework
|
|
from test_framework.util import assert_equal, initialize_chain_clean, \
|
|
start_nodes, start_node, connect_nodes_bi, bitcoind_processes
|
|
|
|
import time
|
|
|
|
|
|
class RewindBlockIndexTest (BitcoinTestFramework):
|
|
|
|
def setup_chain(self):
|
|
print("Initializing test directory "+self.options.tmpdir)
|
|
initialize_chain_clean(self.options.tmpdir, 3)
|
|
|
|
def setup_network(self, split=False):
|
|
# Node 0 - Overwinter, then Sprout, then Overwinter again
|
|
# Node 1 - Sprout
|
|
# Node 2 - Overwinter
|
|
self.nodes = start_nodes(3, self.options.tmpdir, extra_args=[['-nuparams=5ba81b19:10'], [], ['-nuparams=5ba81b19:10']])
|
|
connect_nodes_bi(self.nodes,0,1)
|
|
connect_nodes_bi(self.nodes,1,2)
|
|
connect_nodes_bi(self.nodes,0,2)
|
|
self.is_network_split=False
|
|
self.sync_all()
|
|
|
|
def run_test (self):
|
|
# Bring all nodes to just before the activation block
|
|
print("Mining blocks...")
|
|
self.nodes[0].generate(8)
|
|
block9 = self.nodes[0].generate(1)[0]
|
|
self.sync_all()
|
|
|
|
assert_equal(self.nodes[0].getbestblockhash(), block9)
|
|
assert_equal(self.nodes[1].getbestblockhash(), block9)
|
|
|
|
print("Mining diverging blocks")
|
|
block10s = self.nodes[1].generate(1)[0]
|
|
block10o = self.nodes[2].generate(1)[0]
|
|
self.sync_all()
|
|
|
|
assert_equal(self.nodes[0].getbestblockhash(), block10o)
|
|
assert_equal(self.nodes[1].getbestblockhash(), block10s)
|
|
assert_equal(self.nodes[2].getbestblockhash(), block10o)
|
|
|
|
# Restart node 0 using Sprout instead of Overwinter
|
|
print("Switching node 0 from Overwinter to Sprout")
|
|
self.nodes[0].stop()
|
|
bitcoind_processes[0].wait()
|
|
self.nodes[0] = start_node(0,self.options.tmpdir)
|
|
connect_nodes_bi(self.nodes,0,1)
|
|
connect_nodes_bi(self.nodes,1,2)
|
|
connect_nodes_bi(self.nodes,0,2)
|
|
|
|
# Assume node 1 will send block10s to node 0 quickly
|
|
# (if we used self.sync_all() here and there was a bug, the test would hang)
|
|
time.sleep(2)
|
|
|
|
# Node 0 has rewound and is now on the Sprout chain
|
|
assert_equal(self.nodes[0].getblockcount(), 10)
|
|
assert_equal(self.nodes[0].getbestblockhash(), block10s)
|
|
|
|
# Restart node 0 using Overwinter instead of Sprout
|
|
print("Switching node 0 from Sprout to Overwinter")
|
|
self.nodes[0].stop()
|
|
bitcoind_processes[0].wait()
|
|
self.nodes[0] = start_node(0,self.options.tmpdir, extra_args=['-nuparams=5ba81b19:10'])
|
|
connect_nodes_bi(self.nodes,0,1)
|
|
connect_nodes_bi(self.nodes,1,2)
|
|
connect_nodes_bi(self.nodes,0,2)
|
|
|
|
# Assume node 2 will send block10o to node 0 quickly
|
|
# (if we used self.sync_all() here and there was a bug, the test would hang)
|
|
time.sleep(2)
|
|
|
|
# Node 0 has rewound and is now on the Overwinter chain again
|
|
assert_equal(self.nodes[0].getblockcount(), 10)
|
|
assert_equal(self.nodes[0].getbestblockhash(), block10o)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
RewindBlockIndexTest().main()
|