From 41dcf61504b6cde377a4c5c313539d098947388b Mon Sep 17 00:00:00 2001
From: Gavin Andresen <gavinandresen@gmail.com>
Date: Tue, 18 Feb 2014 09:42:37 -0500
Subject: Test for walletbackup/walletdump RPC calls

---
 qa/rpc-tests/README.md       |  23 +++-
 qa/rpc-tests/walletbackup.sh | 293 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 314 insertions(+), 2 deletions(-)
 create mode 100755 qa/rpc-tests/walletbackup.sh

diff --git a/qa/rpc-tests/README.md b/qa/rpc-tests/README.md
index c8537247d9..ee9e8b35ca 100644
--- a/qa/rpc-tests/README.md
+++ b/qa/rpc-tests/README.md
@@ -1,6 +1,25 @@
 Regression tests of RPC interface
 =================================
 
-wallet.sh : Test wallet send/receive code (see comments for details)
+wallet.sh : Exercise wallet send/receive code.
 
-util.sh : useful re-usable functions 
+walletbackup.sh : Exercise wallet backup / dump / import
+
+txnmall.sh : Test proper accounting of malleable transactions
+
+conflictedbalance.sh : More testing of malleable transaction handling
+
+util.sh : useful re-usable bash functions
+
+
+Tips for creating new tests
+===========================
+
+To cleanup after a failed or interrupted test:
+  killall bitcoind
+  rm -rf test.*
+
+The most difficult part of writing reproducible tests is
+keeping multiple nodes in sync. See WaitBlocks,
+WaitPeers, and WaitMemPools for how other tests
+deal with this.
diff --git a/qa/rpc-tests/walletbackup.sh b/qa/rpc-tests/walletbackup.sh
new file mode 100755
index 0000000000..9207243b62
--- /dev/null
+++ b/qa/rpc-tests/walletbackup.sh
@@ -0,0 +1,293 @@
+#!/usr/bin/env bash
+
+# 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. $0 ../../src"
+        exit 1
+fi
+
+BITCOIND=${1}/bitcoind
+CLI=${1}/bitcoin-cli
+
+DIR="${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 [[ $TXID == "" ]] ; then
+      echoerr "node${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
-- 
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