1 files changed, 42 insertions, 0 deletions
diff --git a/test/functional/p2p_ibd_txrelay.py b/test/functional/p2p_ibd_txrelay.py
new file mode 100755
index 0000000000..c3e758b021
--- /dev/null
+++ b/test/functional/p2p_ibd_txrelay.py
@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+# Copyright (c) 2020 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 fee filters during and after IBD."""
+
+from decimal import Decimal
+
+from test_framework.messages import COIN
+from test_framework.test_framework import BitcoinTestFramework
+
+MAX_FEE_FILTER = Decimal(9170997) / COIN
+NORMAL_FEE_FILTER = Decimal(100) / COIN
+
+
+class P2PIBDTxRelayTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.setup_clean_chain = True
+        self.num_nodes = 2
+        self.extra_args = [
+            ["-minrelaytxfee={}".format(NORMAL_FEE_FILTER)],
+            ["-minrelaytxfee={}".format(NORMAL_FEE_FILTER)],
+        ]
+
+    def run_test(self):
+        self.log.info("Check that nodes set minfilter to MAX_MONEY while still in IBD")
+        for node in self.nodes:
+            assert node.getblockchaininfo()['initialblockdownload']
+            self.wait_until(lambda: all(peer['minfeefilter'] == MAX_FEE_FILTER for peer in node.getpeerinfo()))
+
+        # Come out of IBD by generating a block
+        self.nodes[0].generate(1)
+        self.sync_all()
+
+        self.log.info("Check that nodes reset minfilter after coming out of IBD")
+        for node in self.nodes:
+            assert not node.getblockchaininfo()['initialblockdownload']
+            self.wait_until(lambda: all(peer['minfeefilter'] == NORMAL_FEE_FILTER for peer in node.getpeerinfo()))
+
+
+if __name__ == '__main__':
+    P2PIBDTxRelayTest().main()