test/functional/bip65-cltv.py

   1 #!/usr/bin/env python3
   2 # Copyright (c) 2015-2016 The Bitcoin Core developers
   3 # Distributed under the MIT software license, see the accompanying
   4 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5 """Test the CHECKLOCKTIMEVERIFY (BIP65) soft-fork logic."""
   6
   7 from test_framework.test_framework import BitcoinTestFramework
   8 from test_framework.util import *
   9
  10 class BIP65Test(BitcoinTestFramework):
  11     def __init__(self):
  12         super().__init__()
  13         self.num_nodes = 3
  14         self.setup_clean_chain = False
  15         self.extra_args = [[], ["-blockversion=3"], ["-blockversion=4"]]
  16
  17     def setup_network(self):
  18         self.setup_nodes()
  19         connect_nodes(self.nodes[1], 0)
  20         connect_nodes(self.nodes[2], 0)
  21         self.sync_all()
  22
  23     def run_test(self):
  24         cnt = self.nodes[0].getblockcount()
  25
  26         # Mine some old-version blocks
  27         self.nodes[1].generate(200)
  28         cnt += 100
  29         self.sync_all()
  30         if (self.nodes[0].getblockcount() != cnt + 100):
  31             raise AssertionError("Failed to mine 100 version=3 blocks")
  32
  33         # Mine 750 new-version blocks
  34         for i in range(15):
  35             self.nodes[2].generate(50)
  36         self.sync_all()
  37         if (self.nodes[0].getblockcount() != cnt + 850):
  38             raise AssertionError("Failed to mine 750 version=4 blocks")
  39
  40         # TODO: check that new CHECKLOCKTIMEVERIFY rules are not enforced
  41
  42         # Mine 1 new-version block
  43         self.nodes[2].generate(1)
  44         self.sync_all()
  45         if (self.nodes[0].getblockcount() != cnt + 851):
  46             raise AssertionError("Failed to mine a version=4 blocks")
  47
  48         # TODO: check that new CHECKLOCKTIMEVERIFY rules are enforced
  49
  50         # Mine 198 new-version blocks
  51         for i in range(2):
  52             self.nodes[2].generate(99)
  53         self.sync_all()
  54         if (self.nodes[0].getblockcount() != cnt + 1049):
  55             raise AssertionError("Failed to mine 198 version=4 blocks")
  56
  57         # Mine 1 old-version block
  58         self.nodes[1].generate(1)
  59         self.sync_all()
  60         if (self.nodes[0].getblockcount() != cnt + 1050):
  61             raise AssertionError("Failed to mine a version=3 block after 949 version=4 blocks")
  62
  63         # Mine 1 new-version blocks
  64         self.nodes[2].generate(1)
  65         self.sync_all()
  66         if (self.nodes[0].getblockcount() != cnt + 1051):
  67             raise AssertionError("Failed to mine a version=4 block")
  68
  69         # Mine 1 old-version blocks. This should fail
  70         assert_raises_jsonrpc(-1,"CreateNewBlock: TestBlockValidity failed: bad-version(0x00000003)", self.nodes[1].generate, 1)
  71         self.sync_all()
  72         if (self.nodes[0].getblockcount() != cnt + 1051):
  73             raise AssertionError("Accepted a version=3 block after 950 version=4 blocks")
  74
  75         # Mine 1 new-version blocks
  76         self.nodes[2].generate(1)
  77         self.sync_all()
  78         if (self.nodes[0].getblockcount() != cnt + 1052):
  79             raise AssertionError("Failed to mine a version=4 block")
  80
  81 if __name__ == '__main__':
  82     BIP65Test().main()