1 files changed, 81 insertions, 0 deletions
diff --git a/test/functional/listsinceblock.py b/test/functional/listsinceblock.py
new file mode 100755
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+++ b/test/functional/listsinceblock.py
@@ -0,0 +1,81 @@
+#!/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 the listsincelast RPC."""
+
+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)
+        self.log.info('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()