1 files changed, 122 insertions, 0 deletions
diff --git a/test/functional/wallet_hd.py b/test/functional/wallet_hd.py
new file mode 100755
index 0000000000..9f0e9acb47
--- /dev/null
+++ b/test/functional/wallet_hd.py
@@ -0,0 +1,122 @@
+#!/usr/bin/env python3
+# Copyright (c) 2016-2017 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 Hierarchical Deterministic wallet function."""
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import (
+    assert_equal,
+    connect_nodes_bi,
+)
+import shutil
+import os
+
+class WalletHDTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.setup_clean_chain = True
+        self.num_nodes = 2
+        self.extra_args = [[], ['-keypool=0']]
+
+    def run_test (self):
+        tmpdir = self.options.tmpdir
+
+        # Make sure can't switch off usehd after wallet creation
+        self.stop_node(1)
+        self.assert_start_raises_init_error(1, ['-usehd=0'], 'already existing HD wallet')
+        self.start_node(1)
+        connect_nodes_bi(self.nodes, 0, 1)
+
+        # Make sure we use hd, keep masterkeyid
+        masterkeyid = self.nodes[1].getwalletinfo()['hdmasterkeyid']
+        assert_equal(len(masterkeyid), 40)
+
+        # create an internal key
+        change_addr = self.nodes[1].getrawchangeaddress()
+        change_addrV= self.nodes[1].validateaddress(change_addr)
+        assert_equal(change_addrV["hdkeypath"], "m/0'/1'/0'") #first internal child key
+
+        # Import a non-HD private key in the HD wallet
+        non_hd_add = self.nodes[0].getnewaddress()
+        self.nodes[1].importprivkey(self.nodes[0].dumpprivkey(non_hd_add))
+
+        # This should be enough to keep the master key and the non-HD key
+        self.nodes[1].backupwallet(tmpdir + "/hd.bak")
+        #self.nodes[1].dumpwallet(tmpdir + "/hd.dump")
+
+        # Derive some HD addresses and remember the last
+        # Also send funds to each add
+        self.nodes[0].generate(101)
+        hd_add = None
+        num_hd_adds = 300
+        for i in range(num_hd_adds):
+            hd_add = self.nodes[1].getnewaddress()
+            hd_info = self.nodes[1].validateaddress(hd_add)
+            assert_equal(hd_info["hdkeypath"], "m/0'/0'/"+str(i)+"'")
+            assert_equal(hd_info["hdmasterkeyid"], masterkeyid)
+            self.nodes[0].sendtoaddress(hd_add, 1)
+            self.nodes[0].generate(1)
+        self.nodes[0].sendtoaddress(non_hd_add, 1)
+        self.nodes[0].generate(1)
+
+        # create an internal key (again)
+        change_addr = self.nodes[1].getrawchangeaddress()
+        change_addrV= self.nodes[1].validateaddress(change_addr)
+        assert_equal(change_addrV["hdkeypath"], "m/0'/1'/1'") #second internal child key
+
+        self.sync_all()
+        assert_equal(self.nodes[1].getbalance(), num_hd_adds + 1)
+
+        self.log.info("Restore backup ...")
+        self.stop_node(1)
+        # we need to delete the complete regtest directory
+        # otherwise node1 would auto-recover all funds in flag the keypool keys as used
+        shutil.rmtree(os.path.join(tmpdir, "node1/regtest/blocks"))
+        shutil.rmtree(os.path.join(tmpdir, "node1/regtest/chainstate"))
+        shutil.copyfile(os.path.join(tmpdir, "hd.bak"), os.path.join(tmpdir, "node1/regtest/wallets/wallet.dat"))
+        self.start_node(1)
+
+        # Assert that derivation is deterministic
+        hd_add_2 = None
+        for _ in range(num_hd_adds):
+            hd_add_2 = self.nodes[1].getnewaddress()
+            hd_info_2 = self.nodes[1].validateaddress(hd_add_2)
+            assert_equal(hd_info_2["hdkeypath"], "m/0'/0'/"+str(_)+"'")
+            assert_equal(hd_info_2["hdmasterkeyid"], masterkeyid)
+        assert_equal(hd_add, hd_add_2)
+        connect_nodes_bi(self.nodes, 0, 1)
+        self.sync_all()
+
+        # Needs rescan
+        self.stop_node(1)
+        self.start_node(1, extra_args=self.extra_args[1] + ['-rescan'])
+        assert_equal(self.nodes[1].getbalance(), num_hd_adds + 1)
+
+        # Try a RPC based rescan
+        self.stop_node(1)
+        shutil.rmtree(os.path.join(tmpdir, "node1/regtest/blocks"))
+        shutil.rmtree(os.path.join(tmpdir, "node1/regtest/chainstate"))
+        shutil.copyfile(os.path.join(tmpdir, "hd.bak"), os.path.join(tmpdir, "node1/regtest/wallet.dat"))
+        self.start_node(1, extra_args=self.extra_args[1])
+        connect_nodes_bi(self.nodes, 0, 1)
+        self.sync_all()
+        out = self.nodes[1].rescanblockchain(0, 1)
+        assert_equal(out['start_height'], 0)
+        assert_equal(out['stop_height'], 1)
+        out = self.nodes[1].rescanblockchain()
+        assert_equal(out['start_height'], 0)
+        assert_equal(out['stop_height'], self.nodes[1].getblockcount())
+        assert_equal(self.nodes[1].getbalance(), num_hd_adds + 1)
+
+        # send a tx and make sure its using the internal chain for the changeoutput
+        txid = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 1)
+        outs = self.nodes[1].decoderawtransaction(self.nodes[1].gettransaction(txid)['hex'])['vout']
+        keypath = ""
+        for out in outs:
+            if out['value'] != 1:
+                keypath = self.nodes[1].validateaddress(out['scriptPubKey']['addresses'][0])['hdkeypath']
+
+        assert_equal(keypath[0:7], "m/0'/1'")
+
+if __name__ == '__main__':
+    WalletHDTest().main ()