a945f09fa6
2cc8ca19f4[test] Use deterministic addrman in addrman info tests (stratospher)a897866109[test] Restart a node with empty addrman (stratospher)71c19915c0[test] Use deterministic addrman in addpeeraddress test (stratospher)7b868e6b67Revert "test: avoid non-determinism in asmap-addrman test" (stratospher)69e091f3e1[init] Create deterministic addrman in tests using -test=addrman (stratospher)be25ac3092[init] Remove -addrmantest command line arg (stratospher)802e6e128b[init] Add new command line arg for use only in functional tests (stratospher) Pull request description: An address is placed in a `[bucket,position]` in the addrman table (new table or tried table) using the `addpeeraddress` RPC. This `[bucket,position]` is calculated using `nKey`(and other metrics) for the addrman which is chosen randomly during every run. Supposing there are 2 addresses to be placed in an addrman table. During every test run, a different `[bucket,position]` would be calculated for each address.These calculated `[bucket,position]` could even be the same for the 2 addresses in some test runs and result in collisions in the addrman. We wouldn't be able to predict when the collisions are going to happen because we can't predict the `nKey` value which is chosen at random. This can cause flaky tests. Because of these non deterministic collisions, we are limited in what we can do to test addrman functionality. Currently in our tests don't add a second address to prevent these collisions from happening - we only keep 1 address in the new table and 1 address in the tried table. See https://github.com/bitcoin/bitcoin/pull/26988#discussion_r1091145647, https://github.com/bitcoin/bitcoin/pull/23084, [#22831(comment)](https://github.com/bitcoin/bitcoin/pull/22831/files#r708302639). This PR lets us create a deterministic addrman with fixed `nKey` so that we can know the `[bucket,position]` collisions beforehand, safely add more addresses in an addrman table and write more extensive tests. ACKs for top commit: amitiuttarwar: ACK2cc8ca19f4achow101: ACK2cc8ca19f40xB10C: ACK2cc8ca19f4mzumsande: Code Review ACK2cc8ca19f4Tree-SHA512: 8acd9bdfe7de1eb44d22373bf13533d8ecf602df966fdd5b8b78afcd8cc35a286c95d2712f67a89473a0d68dded7d38f5599f6e4bf95a6589475444545bfb189
Bitcoin Core integration/staging tree
For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.
What is Bitcoin Core?
Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.
Further information about Bitcoin Core is available in the doc folder.
License
Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.
Development Process
The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be
completely stable. Tags are created
regularly from release branches to indicate new official, stable release versions of Bitcoin Core.
The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.
The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.
Testing
Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.
Automated Testing
Developers are strongly encouraged to write unit tests for new code, and to
submit new unit tests for old code. Unit tests can be compiled and run
(assuming they weren't disabled in configure) with: make check. Further details on running
and extending unit tests can be found in /src/test/README.md.
There are also regression and integration tests, written
in Python.
These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py
The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.
Manual Quality Assurance (QA) Testing
Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.
Translations
Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.
Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.
Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.