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-rwxr-xr-xtest/functional/feature_maxtipage.py56
1 files changed, 56 insertions, 0 deletions
diff --git a/test/functional/feature_maxtipage.py b/test/functional/feature_maxtipage.py
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+++ b/test/functional/feature_maxtipage.py
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+#!/usr/bin/env python3
+# Copyright (c) 2022 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 logic for setting nMaxTipAge on command line.
+
+Nodes don't consider themselves out of "initial block download" as long as
+their best known block header time is more than nMaxTipAge in the past.
+"""
+
+import time
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_equal
+
+
+DEFAULT_MAX_TIP_AGE = 24 * 60 * 60
+
+
+class MaxTipAgeTest(BitcoinTestFramework):
+ def set_test_params(self):
+ self.setup_clean_chain = True
+ self.num_nodes = 2
+
+ def test_maxtipage(self, maxtipage, set_parameter=True):
+ node_miner = self.nodes[0]
+ node_ibd = self.nodes[1]
+
+ self.restart_node(1, [f'-maxtipage={maxtipage}'] if set_parameter else None)
+ self.connect_nodes(0, 1)
+
+ # tips older than maximum age -> stay in IBD
+ cur_time = int(time.time())
+ node_ibd.setmocktime(cur_time)
+ for delta in [5, 4, 3, 2, 1]:
+ node_miner.setmocktime(cur_time - maxtipage - delta)
+ self.generate(node_miner, 1)
+ assert_equal(node_ibd.getblockchaininfo()['initialblockdownload'], True)
+
+ # tip within maximum age -> leave IBD
+ node_miner.setmocktime(cur_time - maxtipage)
+ self.generate(node_miner, 1)
+ assert_equal(node_ibd.getblockchaininfo()['initialblockdownload'], False)
+
+ def run_test(self):
+ self.log.info("Test IBD with maximum tip age of 24 hours (default).")
+ self.test_maxtipage(DEFAULT_MAX_TIP_AGE, set_parameter=False)
+
+ for hours in [20, 10, 5, 2, 1]:
+ maxtipage = hours * 60 * 60
+ self.log.info(f"Test IBD with maximum tip age of {hours} hours (-maxtipage={maxtipage}).")
+ self.test_maxtipage(maxtipage)
+
+
+if __name__ == '__main__':
+ MaxTipAgeTest().main()