From 1577df986e8f35d4c2bff27873187a9079ee3226 Mon Sep 17 00:00:00 2001
From: mrbandrews <bandrewsny@gmail.com>
Date: Thu, 4 Dec 2014 16:09:58 -0500
Subject: [PATCH] Port of walletbackup.sh to Python.

---
 qa/rpc-tests/walletbackup.py | 200 +++++++++++++++++++++++
 qa/rpc-tests/walletbackup.sh | 297 -----------------------------------
 2 files changed, 200 insertions(+), 297 deletions(-)
 create mode 100755 qa/rpc-tests/walletbackup.py
 delete mode 100755 qa/rpc-tests/walletbackup.sh

diff --git a/qa/rpc-tests/walletbackup.py b/qa/rpc-tests/walletbackup.py
new file mode 100755
index 000000000..6a42d9dfa
--- /dev/null
+++ b/qa/rpc-tests/walletbackup.py
@@ -0,0 +1,200 @@
+#!/usr/bin/env python2
+# Copyright (c) 2014 The Bitcoin Core developers
+# Distributed under the MIT/X11 software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+"""
+Exercise the wallet backup code.  Ported from walletbackup.sh.
+
+Test case is:
+4 nodes. 1 2 and 3 send transactions between each other,
+fourth node is a miner.
+1 2 3 each mine a block to start, then
+Miner creates 100 blocks so 1 2 3 each have 50 mature
+coins to spend.
+Then 5 iterations of 1/2/3 sending coins amongst
+themselves to get transactions in the wallets,
+and the miner mining one block.
+
+Wallets are backed up using dumpwallet/backupwallet.
+Then 5 more iterations of transactions and mining a block.
+
+Miner then generates 101 more blocks, so any
+transaction fees paid mature.
+
+Sanity check:
+  Sum(1,2,3,4 balances) == 114*50
+
+1/2/3 are shutdown, and their wallets erased.
+Then restore using wallet.dat backup. And
+confirm 1/2/3/4 balances are same as before.
+
+Shutdown again, restore using importwallet,
+and confirm again balances are correct.
+"""
+
+from test_framework import BitcoinTestFramework
+from util import *
+from random import randint
+import logging
+logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.INFO)
+
+class WalletBackupTest(BitcoinTestFramework):
+
+    def setup_chain(self):
+        logging.info("Initializing test directory "+self.options.tmpdir)
+        initialize_chain_clean(self.options.tmpdir, 4)
+
+    # This mirrors how the network was setup in the bash test
+    def setup_network(self, split=False):
+        # nodes 1, 2,3 are spenders, let's give them a keypool=100
+        extra_args = [["-keypool=100"], ["-keypool=100"], ["-keypool=100"], []]
+        self.nodes = start_nodes(4, self.options.tmpdir, extra_args)
+        connect_nodes(self.nodes[0], 3)
+        connect_nodes(self.nodes[1], 3)
+        connect_nodes(self.nodes[2], 3)
+        connect_nodes(self.nodes[2], 0)
+        self.is_network_split=False
+        self.sync_all()
+
+    def one_send(self, from_node, to_address):
+        if (randint(1,2) == 1):
+            amount = Decimal(randint(1,10)) / Decimal(10)
+            self.nodes[from_node].sendtoaddress(to_address, amount)
+
+    def do_one_round(self):
+        a0 = self.nodes[0].getnewaddress()
+        a1 = self.nodes[1].getnewaddress()
+        a2 = self.nodes[2].getnewaddress()
+
+        self.one_send(0, a1)
+        self.one_send(0, a2)
+        self.one_send(1, a0)
+        self.one_send(1, a2)
+        self.one_send(2, a0)
+        self.one_send(2, a1)
+
+        # Have the miner (node3) mine a block.
+        # Must sync mempools before mining.
+        sync_mempools(self.nodes)
+        self.nodes[3].setgenerate(True, 1)
+
+    # As above, this mirrors the original bash test.
+    def start_three(self):
+        self.nodes[0] = start_node(0, self.options.tmpdir)
+        self.nodes[1] = start_node(1, self.options.tmpdir)
+        self.nodes[2] = start_node(2, self.options.tmpdir)
+        connect_nodes(self.nodes[0], 3)
+        connect_nodes(self.nodes[1], 3)
+        connect_nodes(self.nodes[2], 3)
+        connect_nodes(self.nodes[2], 0)
+
+    def stop_three(self):
+        stop_node(self.nodes[0], 0)
+        stop_node(self.nodes[1], 1)
+        stop_node(self.nodes[2], 2)
+
+    def erase_three(self):
+        os.remove(self.options.tmpdir + "/node0/regtest/wallet.dat")
+        os.remove(self.options.tmpdir + "/node1/regtest/wallet.dat")
+        os.remove(self.options.tmpdir + "/node2/regtest/wallet.dat")
+
+    def run_test(self):
+        logging.info("Generating initial blockchain")
+        self.nodes[0].setgenerate(True, 1)
+        sync_blocks(self.nodes)
+        self.nodes[1].setgenerate(True, 1)
+        sync_blocks(self.nodes)
+        self.nodes[2].setgenerate(True, 1)
+        sync_blocks(self.nodes)
+        self.nodes[3].setgenerate(True, 100)
+        sync_blocks(self.nodes)
+
+        assert_equal(self.nodes[0].getbalance(), 50)
+        assert_equal(self.nodes[1].getbalance(), 50)
+        assert_equal(self.nodes[2].getbalance(), 50)
+        assert_equal(self.nodes[3].getbalance(), 0)
+
+        logging.info("Creating transactions")
+        # Five rounds of sending each other transactions.
+        for i in range(5):
+            self.do_one_round()
+
+        logging.info("Backing up")
+        tmpdir = self.options.tmpdir
+        self.nodes[0].backupwallet(tmpdir + "/node0/wallet.bak")
+        self.nodes[0].dumpwallet(tmpdir + "/node0/wallet.dump")
+        self.nodes[1].backupwallet(tmpdir + "/node1/wallet.bak")
+        self.nodes[1].dumpwallet(tmpdir + "/node1/wallet.dump")
+        self.nodes[2].backupwallet(tmpdir + "/node2/wallet.bak")
+        self.nodes[2].dumpwallet(tmpdir + "/node2/wallet.dump")
+
+        logging.info("More transactions")
+        for i in range(5):
+            self.do_one_round()
+
+        # Generate 101 more blocks, so any fees paid mature
+        self.nodes[3].setgenerate(True, 101)
+        self.sync_all()
+
+        balance0 = self.nodes[0].getbalance()
+        balance1 = self.nodes[1].getbalance()
+        balance2 = self.nodes[2].getbalance()
+        balance3 = self.nodes[3].getbalance()
+        total = balance0 + balance1 + balance2 + balance3
+
+        # At this point, there are 214 blocks (103 for setup, then 10 rounds, then 101.)
+        # 114 are mature, so the sum of all wallets should be 114 * 50 = 5700.
+        assert_equal(total, 5700)
+
+        ##
+        # Test restoring spender wallets from backups
+        ##
+        logging.info("Restoring using wallet.dat")
+        self.stop_three()
+        self.erase_three()
+
+        # Start node2 with no chain
+        shutil.rmtree(self.options.tmpdir + "/node2/regtest/blocks")
+        shutil.rmtree(self.options.tmpdir + "/node2/regtest/chainstate")
+
+        # Restore wallets from backup
+        shutil.copyfile(tmpdir + "/node0/wallet.bak", tmpdir + "/node0/regtest/wallet.dat")
+        shutil.copyfile(tmpdir + "/node1/wallet.bak", tmpdir + "/node1/regtest/wallet.dat")
+        shutil.copyfile(tmpdir + "/node2/wallet.bak", tmpdir + "/node2/regtest/wallet.dat")
+
+        logging.info("Re-starting nodes")
+        self.start_three()
+        sync_blocks(self.nodes)
+
+        assert_equal(self.nodes[0].getbalance(), balance0)
+        assert_equal(self.nodes[1].getbalance(), balance1)
+        assert_equal(self.nodes[2].getbalance(), balance2)
+
+        logging.info("Restoring using dumped wallet")
+        self.stop_three()
+        self.erase_three()
+
+        #start node2 with no chain
+        shutil.rmtree(self.options.tmpdir + "/node2/regtest/blocks")
+        shutil.rmtree(self.options.tmpdir + "/node2/regtest/chainstate")
+
+        self.start_three()
+
+        assert_equal(self.nodes[0].getbalance(), 0)
+        assert_equal(self.nodes[1].getbalance(), 0)
+        assert_equal(self.nodes[2].getbalance(), 0)
+
+        self.nodes[0].importwallet(tmpdir + "/node0/wallet.dump")
+        self.nodes[1].importwallet(tmpdir + "/node1/wallet.dump")
+        self.nodes[2].importwallet(tmpdir + "/node2/wallet.dump")
+
+        sync_blocks(self.nodes)
+
+        assert_equal(self.nodes[0].getbalance(), balance0)
+        assert_equal(self.nodes[1].getbalance(), balance1)
+        assert_equal(self.nodes[2].getbalance(), balance2)
+
+
+if __name__ == '__main__':
+    WalletBackupTest().main()
diff --git a/qa/rpc-tests/walletbackup.sh b/qa/rpc-tests/walletbackup.sh
deleted file mode 100755
index 4af3d97f3..000000000
--- a/qa/rpc-tests/walletbackup.sh
+++ /dev/null
@@ -1,297 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2014 The Bitcoin Core developers
-# Distributed under the MIT software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-# Test wallet backup / dump / restore functionality
-
-# Test case is:
-# 4 nodes. 1 2 3 and send transactions between each other,
-# fourth node is a miner.
-# 1 2 3 and each mine a block to start, then
-# miner creates 100 blocks so 1 2 3 each have 50 mature
-# coins to spend.
-# Then 5 iterations of 1/2/3 sending coins amongst
-# themselves to get transactions in the wallets,
-# and the miner mining one block.
-#
-# Wallets are backed up using dumpwallet/backupwallet.
-# Then 5 more iterations of transactions, then block.
-#
-# Miner then generates 101 more blocks, so any
-# transaction fees paid mature.
-#
-# Sanity checks done:
-#   Miner balance >= 150*50
-#   Sum(1,2,3,4 balances) == 153*150
-#
-# 1/2/3 are shutdown, and their wallets erased.
-# Then restore using wallet.dat backup. And
-# confirm 1/2/3/4 balances are same as before.
-#
-# Shutdown again, restore using importwallet,
-# and confirm again balances are correct.
-#
-
-if [ $# -lt 1 ]; then
-        echo "Usage: $0 path_to_binaries"
-        echo "e.g. $0 ../../src"
-        echo "Env vars BITCOIND and BITCOINCLI may be used to specify the exact binaries used"
-        exit 1
-fi
-
-BITCOIND=${BITCOIND:-${1}/bitcoind}
-CLI=${BITCOINCLI:-${1}/bitcoin-cli}
-
-DIR="${BASH_SOURCE%/*}"
-SENDANDWAIT="${DIR}/send.sh"
-if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi
-. "$DIR/util.sh"
-
-D=$(mktemp -d test.XXXXX)
-
-echo "Starting nodes..."
-
-# "Miner":
-D4=${D}/node4
-CreateDataDir $D4 port=11030 rpcport=11031
-B4ARGS="-datadir=$D4"
-$BITCOIND $BITCOINDARGS $B4ARGS &
-B4PID=$!
-
-# Want default keypool for 1/2/3, and
-# don't need send-and-wait functionality,
-# so don't use CreateDataDir:
-function CreateConfDir {
-  DIR=$1
-  mkdir -p $DIR
-  CONF=$DIR/bitcoin.conf
-  echo "regtest=1" >> $CONF
-  echo "rpcuser=rt" >> $CONF
-  echo "rpcpassword=rt" >> $CONF
-  echo "rpcwait=1" >> $CONF
-  shift
-  while (( "$#" )); do
-      echo $1 >> $CONF
-      shift
-  done
-}
-
-# "Spenders" 1/2/3
-D1=${D}/node1
-CreateConfDir $D1 port=11000 rpcport=11001 addnode=127.0.0.1:11030
-B1ARGS="-datadir=$D1"
-$BITCOIND $B1ARGS &
-B1PID=$!
-D2=${D}/node2
-CreateConfDir $D2 port=11010 rpcport=11011 addnode=127.0.0.1:11030
-B2ARGS="-datadir=$D2"
-$BITCOIND $B2ARGS &
-B2PID=$!
-D3=${D}/node3
-CreateConfDir $D3 port=11020 rpcport=11021 addnode=127.0.0.1:11030 addnode=127.0.0.1:11000
-B3ARGS="-datadir=$D3"
-$BITCOIND $BITCOINDARGS $B3ARGS &
-B3PID=$!
-
-# Wait until all nodes are at the same block number
-function WaitBlocks {
-    while :
-    do
-        sleep 1
-        BLOCKS1=$( GetBlocks "$B1ARGS" )
-        BLOCKS2=$( GetBlocks "$B2ARGS" )
-        BLOCKS3=$( GetBlocks "$B3ARGS" )
-        BLOCKS4=$( GetBlocks "$B4ARGS" )
-        if (( BLOCKS1 == BLOCKS4 && BLOCKS2 == BLOCKS4 && BLOCKS3 == BLOCKS4 ))
-        then
-            break
-        fi
-    done
-}
-
-# Wait until all nodes have the same txns in
-# their memory pools
-function WaitMemPools {
-    while :
-    do
-        sleep 1
-        MEMPOOL1=$( $CLI "$B1ARGS" getrawmempool | sort | shasum )
-        MEMPOOL2=$( $CLI "$B2ARGS" getrawmempool | sort | shasum )
-        MEMPOOL3=$( $CLI "$B3ARGS" getrawmempool | sort | shasum )
-        MEMPOOL4=$( $CLI "$B4ARGS" getrawmempool | sort | shasum )
-        if [[ $MEMPOOL1 = $MEMPOOL4 && $MEMPOOL2 = $MEMPOOL4 && $MEMPOOL3 = $MEMPOOL4 ]]
-        then
-            break
-        fi
-    done
-}
-
-echo "Generating initial blockchain..."
-
-# 1 block, 50 XBT each == 50 BTC
-$CLI $B1ARGS setgenerate true 1
-WaitBlocks
-$CLI $B2ARGS setgenerate true 1
-WaitBlocks
-$CLI $B3ARGS setgenerate true 1
-WaitBlocks
-
-# 100 blocks, 0 mature
-$CLI $B4ARGS setgenerate true 100
-WaitBlocks
-
-CheckBalance "$B1ARGS" 50
-CheckBalance "$B2ARGS" 50
-CheckBalance "$B3ARGS" 50
-CheckBalance "$B4ARGS" 0
-
-echo "Creating transactions..."
-
-function S {
-  TXID=$( $CLI -datadir=${D}/node${1} sendtoaddress ${2} "${3}" 0 )
-  if [ x$TXID = x ] ; then
-      echoerr "node${1}: error sending ${3} btc"
-      echo -n "node${1} balance: "
-      $CLI -datadir=${D}/node${1} getbalance "*" 0
-      exit 1
-  fi
-}
-
-function OneRound {
-  A1=$( $CLI $B1ARGS getnewaddress )
-  A2=$( $CLI $B2ARGS getnewaddress )
-  A3=$( $CLI $B3ARGS getnewaddress )
-  if [[ $(( $RANDOM%2 )) < 1 ]] ; then
-      N=$(( $RANDOM % 9 + 1 ))
-      S 1 $A2 "0.$N"
-  fi
-  if [[ $(( $RANDOM%2 )) < 1 ]] ; then
-      N=$(( $RANDOM % 9 + 1 ))
-      S 1 $A3 "0.0$N"
-  fi
-  if [[ $(( $RANDOM%2 )) < 1 ]] ; then
-      N=$(( $RANDOM % 9 + 1 ))
-      S 2 $A1 "0.$N"
-  fi
-  if [[ $(( $RANDOM%2 )) < 1 ]] ; then
-      N=$(( $RANDOM % 9 + 1 ))
-      S 2 $A3 "0.$N"
-  fi
-  if [[ $(( $RANDOM%2 )) < 1 ]] ; then
-      N=$(( $RANDOM % 9 + 1 ))
-      S 3 $A1 "0.$N"
-  fi
-  if [[ $(( $RANDOM%2 )) < 1 ]] ; then
-      N=$(( $RANDOM % 9 + 1 ))
-      S 3 $A2 "0.0$N"
-  fi
-  $CLI "$B4ARGS" setgenerate true 1
-}
-
-for i in {1..5}; do OneRound ; done
-
-echo "Backing up..."
-
-$CLI "$B1ARGS" backupwallet "$D1/wallet.bak"
-$CLI "$B1ARGS" dumpwallet "$D1/wallet.dump"
-$CLI "$B2ARGS" backupwallet "$D2/wallet.bak"
-$CLI "$B2ARGS" dumpwallet "$D2/wallet.dump"
-$CLI "$B3ARGS" backupwallet "$D3/wallet.bak"
-$CLI "$B3ARGS" dumpwallet "$D3/wallet.dump"
-
-echo "More transactions..."
-for i in {1..5}; do OneRound ; done
-
-WaitMemPools
-
-# Generate 101 more blocks, so any fees paid
-# mature
-$CLI "$B4ARGS" setgenerate true 101
-
-BALANCE1=$( $CLI "$B1ARGS" getbalance )
-BALANCE2=$( $CLI "$B2ARGS" getbalance )
-BALANCE3=$( $CLI "$B3ARGS" getbalance )
-BALANCE4=$( $CLI "$B4ARGS" getbalance )
-
-TOTAL=$( dc -e "$BALANCE1 $BALANCE2 $BALANCE3 $BALANCE4 + + + p" )
-
-AssertEqual $TOTAL 5700.00000000
-
-function StopThree {
-  $CLI $B1ARGS stop > /dev/null 2>&1
-  $CLI $B2ARGS stop > /dev/null 2>&1
-  $CLI $B3ARGS stop > /dev/null 2>&1
-  wait $B1PID
-  wait $B2PID
-  wait $B3PID
-}
-function EraseThree {
-  rm $D1/regtest/wallet.dat
-  rm $D2/regtest/wallet.dat
-  rm $D3/regtest/wallet.dat
-}
-function StartThree {
-  $BITCOIND $BITCOINDARGS $B1ARGS &
-  B1PID=$!
-  $BITCOIND $BITCOINDARGS $B2ARGS &
-  B2PID=$!
-  $BITCOIND $BITCOINDARGS $B3ARGS &
-  B3PID=$!
-}
-
-echo "Restoring using wallet.dat"
-
-StopThree
-EraseThree
-
-# Start node3 with no chain
-rm -rf $D3/regtest/blocks
-rm -rf $D3/regtest/chainstate
-rm -rf $D3/regtest/database
-
-cp $D1/wallet.bak $D1/regtest/wallet.dat
-cp $D2/wallet.bak $D2/regtest/wallet.dat
-cp $D3/wallet.bak $D3/regtest/wallet.dat
-
-StartThree
-WaitBlocks
-
-AssertEqual $BALANCE1 $( $CLI "$B1ARGS" getbalance )
-AssertEqual $BALANCE2 $( $CLI "$B2ARGS" getbalance )
-AssertEqual $BALANCE3 $( $CLI "$B3ARGS" getbalance )
-
-echo "Restoring using dumped wallet"
-
-StopThree
-EraseThree
-
-# Start node3 with no chain
-rm -rf $D3/regtest/blocks
-rm -rf $D3/regtest/chainstate
-rm -rf $D3/regtest/database
-
-StartThree
-
-AssertEqual 0 $( $CLI "$B1ARGS" getbalance )
-AssertEqual 0 $( $CLI "$B2ARGS" getbalance )
-AssertEqual 0 $( $CLI "$B3ARGS" getbalance )
-
-$CLI "$B1ARGS" importwallet $D1/wallet.dump
-$CLI "$B2ARGS" importwallet $D2/wallet.dump
-$CLI "$B3ARGS" importwallet $D3/wallet.dump
-
-WaitBlocks
-
-AssertEqual $BALANCE1 $( $CLI "$B1ARGS" getbalance )
-AssertEqual $BALANCE2 $( $CLI "$B2ARGS" getbalance )
-AssertEqual $BALANCE3 $( $CLI "$B3ARGS" getbalance )
-
-StopThree
-$CLI $B4ARGS stop > /dev/null 2>&1
-wait $B4PID
-
-echo "Tests successful, cleaning up"
-trap "" EXIT
-rm -rf $D
-exit 0