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53 lines
2.0 KiB
53 lines
2.0 KiB
4 years ago
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#!/usr/bin/env python3
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# Copyright (c) 2017-2020 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test a pre-segwit node upgrading to segwit consensus"""
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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softfork_active,
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)
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class SegwitUpgradeTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 1
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self.extra_args = [["-segwitheight=10"]]
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def run_test(self):
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"""A pre-segwit node with insufficiently validated blocks needs to redownload blocks"""
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self.log.info("Testing upgrade behaviour for pre-segwit node to segwit rules")
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node = self.nodes[0]
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# Node hasn't been used or connected yet
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assert_equal(node.getblockcount(), 0)
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assert not softfork_active(node, "segwit")
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# Generate 8 blocks without witness data
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node.generate(8)
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assert_equal(node.getblockcount(), 8)
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self.stop_node(0)
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# Restarting the node (with segwit activation height set to 5) should result in a shutdown
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# because the blockchain consists of 3 insufficiently validated blocks per segwit consensus rules.
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node.assert_start_raises_init_error(
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extra_args=["-segwitheight=5"],
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expected_msg=": Witness data for blocks after height 5 requires validation. Please restart with -reindex..\nPlease restart with -reindex or -reindex-chainstate to recover.")
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# As directed, the user restarts the node with -reindex
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self.start_node(0, extra_args=["-reindex", "-segwitheight=5"])
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# With the segwit consensus rules, the node is able to validate only up to block 4
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assert_equal(node.getblockcount(), 4)
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# The upgraded node should now have segwit activated
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assert softfork_active(node, "segwit")
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if __name__ == '__main__':
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SegwitUpgradeTest().main()
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