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54 lines
1.8 KiB
54 lines
1.8 KiB
#!/usr/bin/env python |
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# Copyright (c) 2014 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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# Exercise the getchaintips API. We introduce a network split, work |
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# on chains of different lengths, and join the network together again. |
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# This gives us two tips, verify that it works. |
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from test_framework import BitcoinTestFramework |
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from util import assert_equal |
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class GetChainTipsTest (BitcoinTestFramework): |
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def run_test (self): |
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BitcoinTestFramework.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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# Split the network and build two chains of different lengths. |
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self.split_network () |
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self.nodes[0].setgenerate (True, 10); |
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self.nodes[2].setgenerate (True, 20); |
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self.sync_all () |
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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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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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# 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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tips[1]['branchlen'] = 0; |
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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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