1 files changed, 79 insertions, 0 deletions
diff --git a/test/functional/wallet_zapwallettxes.py b/test/functional/wallet_zapwallettxes.py
new file mode 100755
index 0000000000..87f44b2737
--- /dev/null
+++ b/test/functional/wallet_zapwallettxes.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+# Copyright (c) 2014-2017 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 the zapwallettxes functionality.
+
+- start two bitcoind nodes
+- create two transactions on node 0 - one is confirmed and one is unconfirmed.
+- restart node 0 and verify that both the confirmed and the unconfirmed
+  transactions are still available.
+- restart node 0 with zapwallettxes and persistmempool, and verify that both
+  the confirmed and the unconfirmed transactions are still available.
+- restart node 0 with just zapwallettxes and verify that the confirmed
+  transactions are still available, but that the unconfirmed transaction has
+  been zapped.
+"""
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import (
+    assert_equal,
+    assert_raises_rpc_error,
+    wait_until,
+)
+
+class ZapWalletTXesTest (BitcoinTestFramework):
+    def set_test_params(self):
+        self.setup_clean_chain = True
+        self.num_nodes = 2
+
+    def run_test(self):
+        self.log.info("Mining blocks...")
+        self.nodes[0].generate(1)
+        self.sync_all()
+        self.nodes[1].generate(100)
+        self.sync_all()
+
+        # This transaction will be confirmed
+        txid1 = self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 10)
+
+        self.nodes[0].generate(1)
+        self.sync_all()
+
+        # This transaction will not be confirmed
+        txid2 = self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 20)
+
+        # Confirmed and unconfirmed transactions are now in the wallet.
+        assert_equal(self.nodes[0].gettransaction(txid1)['txid'], txid1)
+        assert_equal(self.nodes[0].gettransaction(txid2)['txid'], txid2)
+
+        # Stop-start node0. Both confirmed and unconfirmed transactions remain in the wallet.
+        self.stop_node(0)
+        self.start_node(0)
+
+        assert_equal(self.nodes[0].gettransaction(txid1)['txid'], txid1)
+        assert_equal(self.nodes[0].gettransaction(txid2)['txid'], txid2)
+
+        # Stop node0 and restart with zapwallettxes and persistmempool. The unconfirmed
+        # transaction is zapped from the wallet, but is re-added when the mempool is reloaded.
+        self.stop_node(0)
+        self.start_node(0, ["-persistmempool=1", "-zapwallettxes=2"])
+
+        wait_until(lambda: self.nodes[0].getmempoolinfo()['size'] == 1, timeout=3)
+        self.nodes[0].syncwithvalidationinterfacequeue()  # Flush mempool to wallet
+
+        assert_equal(self.nodes[0].gettransaction(txid1)['txid'], txid1)
+        assert_equal(self.nodes[0].gettransaction(txid2)['txid'], txid2)
+
+        # Stop node0 and restart with zapwallettxes, but not persistmempool.
+        # The unconfirmed transaction is zapped and is no longer in the wallet.
+        self.stop_node(0)
+        self.start_node(0, ["-zapwallettxes=2"])
+
+        # tx1 is still be available because it was confirmed
+        assert_equal(self.nodes[0].gettransaction(txid1)['txid'], txid1)
+
+        # This will raise an exception because the unconfirmed transaction has been zapped
+        assert_raises_rpc_error(-5, 'Invalid or non-wallet transaction id', self.nodes[0].gettransaction, txid2)
+
+if __name__ == '__main__':
+    ZapWalletTXesTest().main()