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62 lines
2.1 KiB
62 lines
2.1 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2014-2017 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 the getchaintips RPC. |
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- introduce a network split |
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- work on chains of different lengths |
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- join the network together again |
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- verify that getchaintips now returns two chain tips. |
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""" |
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from test_framework.test_framework import BitcoinTestFramework |
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from test_framework.util import assert_equal |
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class GetChainTipsTest (BitcoinTestFramework): |
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def set_test_params(self): |
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self.num_nodes = 4 |
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def run_test (self): |
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tips = self.nodes[0].getchaintips () |
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assert_equal (len (tips), 1) |
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assert_equal (tips[0]['branchlen'], 0) |
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assert_equal (tips[0]['height'], 200) |
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assert_equal (tips[0]['status'], 'active') |
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# Split the network and build two chains of different lengths. |
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self.split_network () |
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self.nodes[0].generate(10) |
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self.nodes[2].generate(20) |
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self.sync_all([self.nodes[:2], self.nodes[2:]]) |
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tips = self.nodes[1].getchaintips () |
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assert_equal (len (tips), 1) |
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shortTip = tips[0] |
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assert_equal (shortTip['branchlen'], 0) |
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assert_equal (shortTip['height'], 210) |
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assert_equal (tips[0]['status'], 'active') |
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tips = self.nodes[3].getchaintips () |
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assert_equal (len (tips), 1) |
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longTip = tips[0] |
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assert_equal (longTip['branchlen'], 0) |
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assert_equal (longTip['height'], 220) |
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assert_equal (tips[0]['status'], 'active') |
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# Join the network halves and check that we now have two tips |
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# (at least at the nodes that previously had the short chain). |
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self.join_network () |
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tips = self.nodes[0].getchaintips () |
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assert_equal (len (tips), 2) |
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assert_equal (tips[0], longTip) |
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assert_equal (tips[1]['branchlen'], 10) |
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assert_equal (tips[1]['status'], 'valid-fork') |
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tips[1]['branchlen'] = 0 |
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tips[1]['status'] = 'active' |
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assert_equal (tips[1], shortTip) |
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if __name__ == '__main__': |
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GetChainTipsTest ().main ()
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