From 5825b34783545f9470d5ab94b87c918980715675 Mon Sep 17 00:00:00 2001 From: Jon Atack Date: Fri, 24 Sep 2021 12:26:59 +0200 Subject: [PATCH] test: avoid non-determinism in asmap-addrman test This is the same approach as for the addpeeraddress test in `test/functional/rpc_net.py` in commit 869f1368. The probability of collision when adding an addrman entry is expected to be 1/2^16 = 1/65536 for an address from a different /16. This change hopes to avoid these collisions by adding 1 tried entry before adding 1 new table one, instead of 2 tried entries followed by 2 new entries, which appears to have caused a collision in the CI. To verify the regression test stills fails when expected: - git checkout 181a120 && git cherry-pick ef242f5 - recompile bitcoind - git checkout this branch and run test/functional/feature_asmap.py. Expected output: ``` AssertionError: Unexpected stderr bitcoind: ./addrman.h:739: void CAddrMan::Check() const: Assertion `false' failed. != ``` Co-authored-by: Martin Zumsande --- test/functional/feature_asmap.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/test/functional/feature_asmap.py b/test/functional/feature_asmap.py index 2dc1e3a7cb..debd87962f 100755 --- a/test/functional/feature_asmap.py +++ b/test/functional/feature_asmap.py @@ -42,8 +42,8 @@ class AsmapTest(BitcoinTestFramework): self.extra_args = [["-checkaddrman=1"]] # Do addrman checks on all operations. def fill_addrman(self, node_id): - """Add 2 tried addresses to the addrman, followed by 2 new addresses.""" - for addr, tried in [[0, True], [1, True], [2, False], [3, False]]: + """Add 1 tried address to the addrman, followed by 1 new address.""" + for addr, tried in [[0, True], [1, False]]: self.nodes[node_id].addpeeraddress(address=f"101.{addr}.0.0", tried=tried, port=8333) def test_without_asmap_arg(self): @@ -89,7 +89,7 @@ class AsmapTest(BitcoinTestFramework): self.restart_node(0, ["-asmap", "-checkaddrman=1"]) with self.node.assert_debug_log( expected_msgs=[ - "Addrman checks started: new 2, tried 2, total 4", + "Addrman checks started: new 1, tried 1, total 2", "Addrman checks completed successfully", ] ):