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17bb230d74
7148b74dc[tests] Functional tests must explicitly set num_nodes (John Newbery)5448a1471[tests] don't override __init__() in individual tests (John Newbery)6cf094a02[tests] Avoid passing around member variables in test_framework (John Newbery)36b626867[tests] TestNode: separate add_node from start_node (John Newbery)be2a2ab6a[tests] fix - use rpc_timeout as rpc timeout (John Newbery) Pull request description: Some additional tidyups after the introduction of TestNode: - commit 1 makes TestNode use the correct rpc timeout. This should have been included in #11077 - commit 2 separates `add_node()` from `start_node()` as originally discussed here: https://github.com/bitcoin/bitcoin/pull/10556#discussion_r121161453 with @kallewoof . The test writer no longer needs to assign to `self.nodes` when starting/stopping nodes. - commit 3 adds a `set_test_params()` method, so individual tests don't need to override `__init__()` and call `super().__init__()` Tree-SHA512: 0adb030623b96675b5c29e2890ce99ccd837ed05f721d0c91b35378c5ac01b6658174aac12f1f77402e1d38b61f39b3c43b4df85c96952565dde1cda05b0db84
66 lines
2.3 KiB
Python
Executable File
66 lines
2.3 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2014-2016 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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# We already checked that the long tip is the active one,
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# update data to verify that the short tip matches the expected one.
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tips[1]['branchlen'] = 0
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tips[1]['status'] = 'active'
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tips[1]['forkpoint'] = tips[1]['hash']
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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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