1 files changed, 53 insertions, 0 deletions
diff --git a/test/functional/mempool_limit.py b/test/functional/mempool_limit.py
new file mode 100755
index 0000000000..a7ca576aee
--- /dev/null
+++ b/test/functional/mempool_limit.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+# Copyright (c) 2014-2016 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 mempool limiting together/eviction with the wallet."""
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import *
+
+class MempoolLimitTest(BitcoinTestFramework):
+
+    def setup_network(self):
+        self.nodes = []
+        self.nodes.append(start_node(0, self.options.tmpdir, ["-maxmempool=5", "-spendzeroconfchange=0"]))
+        self.is_network_split = False
+        self.sync_all()
+        self.relayfee = self.nodes[0].getnetworkinfo()['relayfee']
+
+    def __init__(self):
+        super().__init__()
+        self.setup_clean_chain = True
+        self.num_nodes = 1
+
+        self.txouts = gen_return_txouts()
+
+    def run_test(self):
+        txids = []
+        utxos = create_confirmed_utxos(self.relayfee, self.nodes[0], 91)
+
+        #create a mempool tx that will be evicted
+        us0 = utxos.pop()
+        inputs = [{ "txid" : us0["txid"], "vout" : us0["vout"]}]
+        outputs = {self.nodes[0].getnewaddress() : 0.0001}
+        tx = self.nodes[0].createrawtransaction(inputs, outputs)
+        self.nodes[0].settxfee(self.relayfee) # specifically fund this tx with low fee
+        txF = self.nodes[0].fundrawtransaction(tx)
+        self.nodes[0].settxfee(0) # return to automatic fee selection
+        txFS = self.nodes[0].signrawtransaction(txF['hex'])
+        txid = self.nodes[0].sendrawtransaction(txFS['hex'])
+
+        relayfee = self.nodes[0].getnetworkinfo()['relayfee']
+        base_fee = relayfee*100
+        for i in range (3):
+            txids.append([])
+            txids[i] = create_lots_of_big_transactions(self.nodes[0], self.txouts, utxos[30*i:30*i+30], 30, (i+1)*base_fee)
+
+        # by now, the tx should be evicted, check confirmation state
+        assert(txid not in self.nodes[0].getrawmempool())
+        txdata = self.nodes[0].gettransaction(txid)
+        assert(txdata['confirmations'] ==  0) #confirmation should still be 0
+
+if __name__ == '__main__':
+    MempoolLimitTest().main()