qa/rpc-tests/forknotify.py

   1 #!/usr/bin/env python3
   2 # Copyright (c) 2014-2016 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
   6 #
   7 # Test -alertnotify
   8 #
   9
  10 from test_framework.test_framework import BitcoinTestFramework
  11 from test_framework.util import *
  12
  13 class ForkNotifyTest(BitcoinTestFramework):
  14
  15     def __init__(self):
  16         super().__init__()
  17         self.num_nodes = 2
  18         self.setup_clean_chain = False
  19
  20     alert_filename = None  # Set by setup_network
  21
  22     def setup_network(self):
  23         self.nodes = []
  24         self.alert_filename = os.path.join(self.options.tmpdir, "alert.txt")
  25         with open(self.alert_filename, 'w', encoding='utf8') as f:
  26             pass  # Just open then close to create zero-length file
  27         self.nodes.append(start_node(0, self.options.tmpdir,
  28                             ["-blockversion=2", "-alertnotify=echo %s >> \"" + self.alert_filename + "\""]))
  29         # Node1 mines block.version=211 blocks
  30         self.nodes.append(start_node(1, self.options.tmpdir,
  31                                 ["-blockversion=211"]))
  32         connect_nodes(self.nodes[1], 0)
  33
  34         self.is_network_split = False
  35         self.sync_all()
  36
  37     def run_test(self):
  38         # Mine 51 up-version blocks
  39         self.nodes[1].generate(51)
  40         self.sync_all()
  41         # -alertnotify should trigger on the 51'st,
  42         # but mine and sync another to give
  43         # -alertnotify time to write
  44         self.nodes[1].generate(1)
  45         self.sync_all()
  46
  47         with open(self.alert_filename, 'r', encoding='utf8') as f:
  48             alert_text = f.read()
  49
  50         if len(alert_text) == 0:
  51             raise AssertionError("-alertnotify did not warn of up-version blocks")
  52
  53         # Mine more up-version blocks, should not get more alerts:
  54         self.nodes[1].generate(1)
  55         self.sync_all()
  56         self.nodes[1].generate(1)
  57         self.sync_all()
  58
  59         with open(self.alert_filename, 'r', encoding='utf8') as f:
  60             alert_text2 = f.read()
  61
  62         if alert_text != alert_text2:
  63             raise AssertionError("-alertnotify excessive warning of up-version blocks")
  64
  65 if __name__ == '__main__':
  66     ForkNotifyTest().main()