1abcecc40c Tests: Use self.chain instead of 'regtest' in almost all current tests (Jorge Timón)
Pull request description:
Simply avoiding the hardcoded string in more places for consistency.
It can also allow for more easily reusing tests for other chains other than regtest.
Separated from #8994 .
Continues #16509 .
It is still not complete (ie to be complete, we need the -chain parameter in #16680 and make whether acceptnonstdtxs is allowed for that chain or not customizable for regtest [or for custom chains like in #8994 ] ). But while being incomplete like #16509 , it's quite simple to review and another step forward IMO.
ACKs for top commit:
Sjors:
re-ACK 1abcecc. I think it's an improvement even if incomplete and if some PR's might accidentally bring "regtest" back. Subsequent improvements hopefully don't have to touch 16 files.
elichai:
Code review ACK 1abcecc40c
ryanofsky:
Code review ACK 1abcecc40c.
ryanofsky:
Code review ACK 1abcecc40c
Tree-SHA512: 5620de6dab235ca8bd8670d6366c7b9f04f0e3ca9c5e7f87765b38e16ed80c17d7d1630c0d5fd7c5526f070830d94dc74cc2096d8ede87dc7180ed20569509ee
This commit adds test coverage in `test/functional/tool_wallet.py` to reproduce unexpected writes to the wallet as described in https://github.com/bitcoin/bitcoin/issues/15608:
- wallet tool `info` unexpectedly writes to the wallet file if the wallet file permissions are read/write.
- wallet tool `info` raises with "Error loading . Is wallet being used by another process?" if the wallet file permissions are read-only.
1. Reproduce the reported issue, define the current unexpected behavior, and add test coverage to guide a future fix in the form of commented-out assertions to be uncommented when testing/fixing.
2. Provisionally extend the same coverage to the wallet tool create test and the getwalletinfo test as regression tests while fixing the issue.
3. Add some logging for sanity checking.
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Changes after rebase:
5. Make wallet_path an instance method instead of a function in tool_wallet.py as per Marco Falke review suggestion.
6. Assert wallet permissions instead of logging them in tool_wallet.py. This ran into an issue with Appveyor keeping permissions at 666 so allowed for 666 as a workaround.
7. Change the added logging from info to debug level.
8. More helpful assertions order in tool_wallet.py#assert_tool_output. This change makes #assert_tool_output raise "Error loading wallet.dat. Is wallet being used by another process?" rather than a less-helpful message when debugging the read-only wallet permissions issue.
