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diff --git a/qa/rpc-tests/listsinceblock.py b/qa/rpc-tests/listsinceblock.py
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+++ b/qa/rpc-tests/listsinceblock.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.
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_equal
+
+class ListSinceBlockTest (BitcoinTestFramework):
+
+ def __init__(self):
+ super().__init__()
+ self.setup_clean_chain = True
+ self.num_nodes = 4
+
+ def run_test (self):
+ '''
+ `listsinceblock` did not behave correctly when handed a block that was
+ no longer in the main chain:
+
+ ab0
+ / \
+ aa1 [tx0] bb1
+ | |
+ aa2 bb2
+ | |
+ aa3 bb3
+ |
+ bb4
+
+ Consider a client that has only seen block `aa3` above. It asks the node
+ to `listsinceblock aa3`. But at some point prior the main chain switched
+ to the bb chain.
+
+ Previously: listsinceblock would find height=4 for block aa3 and compare
+ this to height=5 for the tip of the chain (bb4). It would then return
+ results restricted to bb3-bb4.
+
+ Now: listsinceblock finds the fork at ab0 and returns results in the
+ range bb1-bb4.
+
+ This test only checks that [tx0] is present.
+ '''
+
+ assert_equal(self.is_network_split, False)
+ self.nodes[2].generate(101)
+ self.sync_all()
+
+ assert_equal(self.nodes[0].getbalance(), 0)
+ assert_equal(self.nodes[1].getbalance(), 0)
+ assert_equal(self.nodes[2].getbalance(), 50)
+ assert_equal(self.nodes[3].getbalance(), 0)
+
+ # Split network into two
+ self.split_network()
+ assert_equal(self.is_network_split, True)
+
+ # send to nodes[0] from nodes[2]
+ senttx = self.nodes[2].sendtoaddress(self.nodes[0].getnewaddress(), 1)
+
+ # generate on both sides
+ lastblockhash = self.nodes[1].generate(6)[5]
+ self.nodes[2].generate(7)
+ print('lastblockhash=%s' % (lastblockhash))
+
+ self.sync_all()
+
+ self.join_network()
+
+ # listsinceblock(lastblockhash) should now include tx, as seen from nodes[0]
+ lsbres = self.nodes[0].listsinceblock(lastblockhash)
+ found = False
+ for tx in lsbres['transactions']:
+ if tx['txid'] == senttx:
+ found = True
+ break
+ assert_equal(found, True)
+
+if __name__ == '__main__':
+ ListSinceBlockTest().main()