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path: root/test/functional/wallet_multiwallet.py
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#!/usr/bin/env python3
# Copyright (c) 2017 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 multiwallet.

Verify that a bitcoind node can load multiple wallet files
"""
import os
import shutil

from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal, assert_raises_rpc_error

class MultiWalletTest(BitcoinTestFramework):
    def set_test_params(self):
        self.setup_clean_chain = True
        self.num_nodes = 2
        self.supports_cli = True

    def run_test(self):
        node = self.nodes[0]

        data_dir = lambda *p: os.path.join(node.datadir, 'regtest', *p)
        wallet_dir = lambda *p: data_dir('wallets', *p)
        wallet = lambda name: node.get_wallet_rpc(name)

        # check wallet.dat is created
        self.stop_nodes()
        assert_equal(os.path.isfile(wallet_dir('wallet.dat')), True)

        # create symlink to verify wallet directory path can be referenced
        # through symlink
        os.mkdir(wallet_dir('w7'))
        os.symlink('w7', wallet_dir('w7_symlink'))

        # rename wallet.dat to make sure plain wallet file paths (as opposed to
        # directory paths) can be loaded
        os.rename(wallet_dir("wallet.dat"), wallet_dir("w8"))

        # restart node with a mix of wallet names:
        #   w1, w2, w3 - to verify new wallets created when non-existing paths specified
        #   w          - to verify wallet name matching works when one wallet path is prefix of another
        #   sub/w5     - to verify relative wallet path is created correctly
        #   extern/w6  - to verify absolute wallet path is created correctly
        #   w7_symlink - to verify symlinked wallet path is initialized correctly
        #   w8         - to verify existing wallet file is loaded correctly
        #   ''         - to verify default wallet file is created correctly
        wallet_names = ['w1', 'w2', 'w3', 'w', 'sub/w5', os.path.join(self.options.tmpdir, 'extern/w6'), 'w7_symlink', 'w8', '']
        extra_args = ['-wallet={}'.format(n) for n in wallet_names]
        self.start_node(0, extra_args)
        assert_equal(set(node.listwallets()), set(wallet_names))

        # check that all requested wallets were created
        self.stop_node(0)
        for wallet_name in wallet_names:
            if os.path.isdir(wallet_dir(wallet_name)):
                assert_equal(os.path.isfile(wallet_dir(wallet_name, "wallet.dat")), True)
            else:
                assert_equal(os.path.isfile(wallet_dir(wallet_name)), True)

        # should not initialize if wallet path can't be created
        exp_stderr = "\n\n\*+\n" + \
                     "EXCEPTION: .*\n" + \
                     "boost::filesystem::create_directory: Not a directory:.*\n" + \
                     "bitcoin in .*\n"
        self.nodes[0].assert_start_raises_init_error(['-wallet=wallet.dat/bad'], exp_stderr)

        self.nodes[0].assert_start_raises_init_error(['-walletdir=wallets'], 'Error: Specified -walletdir "wallets" does not exist')
        self.nodes[0].assert_start_raises_init_error(['-walletdir=wallets'], 'Error: Specified -walletdir "wallets" is a relative path', cwd=data_dir())
        self.nodes[0].assert_start_raises_init_error(['-walletdir=debug.log'], 'Error: Specified -walletdir "debug.log" is not a directory', cwd=data_dir())

        # should not initialize if there are duplicate wallets
        self.nodes[0].assert_start_raises_init_error(['-wallet=w1', '-wallet=w1'], 'Error: Error loading wallet w1. Duplicate -wallet filename specified.')

        # should not initialize if one wallet is a copy of another
        shutil.copyfile(wallet_dir('w8'), wallet_dir('w8_copy'))
        exp_stderr = "\n\n\*+\n" + \
                     "EXCEPTION: .*\n" + \
                     "CDB: Can't open database w8_copy \(duplicates fileid \w+ from w8\)\s*\n" + \
                     "bitcoin in .*\n"
        self.nodes[0].assert_start_raises_init_error(['-wallet=w8', '-wallet=w8_copy'], exp_stderr)

        # should not initialize if wallet file is a symlink
        os.symlink('w8', wallet_dir('w8_symlink'))
        self.nodes[0].assert_start_raises_init_error(['-wallet=w8_symlink'], 'Error: Invalid -wallet path \'w8_symlink\'\. .*')

        # should not initialize if the specified walletdir does not exist
        self.nodes[0].assert_start_raises_init_error(['-walletdir=bad'], 'Error: Specified -walletdir "bad" does not exist')
        # should not initialize if the specified walletdir is not a directory
        not_a_dir = wallet_dir('notadir')
        open(not_a_dir, 'a').close()
        self.nodes[0].assert_start_raises_init_error(['-walletdir=' + not_a_dir], 'Error: Specified -walletdir "' + not_a_dir + '" is not a directory')

        # if wallets/ doesn't exist, datadir should be the default wallet dir
        wallet_dir2 = data_dir('walletdir')
        os.rename(wallet_dir(), wallet_dir2)
        self.start_node(0, ['-wallet=w4', '-wallet=w5'])
        assert_equal(set(node.listwallets()), {"w4", "w5"})
        w5 = wallet("w5")
        w5.generate(1)

        # now if wallets/ exists again, but the rootdir is specified as the walletdir, w4 and w5 should still be loaded
        os.rename(wallet_dir2, wallet_dir())
        self.restart_node(0, ['-wallet=w4', '-wallet=w5', '-walletdir=' + data_dir()])
        assert_equal(set(node.listwallets()), {"w4", "w5"})
        w5 = wallet("w5")
        w5_info = w5.getwalletinfo()
        assert_equal(w5_info['immature_balance'], 50)

        competing_wallet_dir = os.path.join(self.options.tmpdir, 'competing_walletdir')
        os.mkdir(competing_wallet_dir)
        self.restart_node(0, ['-walletdir=' + competing_wallet_dir])
        exp_stderr = "Error: Error initializing wallet database environment \"\S+competing_walletdir\"!"
        self.nodes[1].assert_start_raises_init_error(['-walletdir=' + competing_wallet_dir], exp_stderr)

        self.restart_node(0, extra_args)

        wallets = [wallet(w) for w in wallet_names]
        wallet_bad = wallet("bad")

        # check wallet names and balances
        wallets[0].generate(1)
        for wallet_name, wallet in zip(wallet_names, wallets):
            info = wallet.getwalletinfo()
            assert_equal(info['immature_balance'], 50 if wallet is wallets[0] else 0)
            assert_equal(info['walletname'], wallet_name)

        # accessing invalid wallet fails
        assert_raises_rpc_error(-18, "Requested wallet does not exist or is not loaded", wallet_bad.getwalletinfo)

        # accessing wallet RPC without using wallet endpoint fails
        assert_raises_rpc_error(-19, "Wallet file not specified", node.getwalletinfo)

        w1, w2, w3, w4, *_ = wallets
        w1.generate(101)
        assert_equal(w1.getbalance(), 100)
        assert_equal(w2.getbalance(), 0)
        assert_equal(w3.getbalance(), 0)
        assert_equal(w4.getbalance(), 0)

        w1.sendtoaddress(w2.getnewaddress(), 1)
        w1.sendtoaddress(w3.getnewaddress(), 2)
        w1.sendtoaddress(w4.getnewaddress(), 3)
        w1.generate(1)
        assert_equal(w2.getbalance(), 1)
        assert_equal(w3.getbalance(), 2)
        assert_equal(w4.getbalance(), 3)

        batch = w1.batch([w1.getblockchaininfo.get_request(), w1.getwalletinfo.get_request()])
        assert_equal(batch[0]["result"]["chain"], "regtest")
        assert_equal(batch[1]["result"]["walletname"], "w1")

if __name__ == '__main__':
    MultiWalletTest().main()