Use parse_spec_no_baseline with :/ for all 2.47.* on CI
#1774
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The bug in Git that causes GitoxideLabs#1622 has been fixed since 2.48.0 and does not affect any versions prior to 2.47, but the fix is not backported to subsequent 2.47.* point releases. In particular, 2.47.2 has been released, with backported security fixes, but it does not have backported fixes for this non-security bug. This builds on GitoxideLabs#1635 and GitoxideLabs#1719 by updating the range of Git versions where we skip the affected baseline checks on CI (for platforms this affects on our CI) from `(2, 47, 0)..(2, 47, 2)` to `(2, 47, 0)..(2, 48, 0)`, i.e., with the exclusive upper bound changed from 2.47.2 to the correct value of 2.48.0. This also revises the comments accordingly. For further details, see: GitoxideLabs#1622 (comment) (This change is item (1) there.)
EliahKagan
changed the title
:/ for all 2.47.* on CIparse_spec_no_baseline with :/ for all 2.47.* on CI
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Thanks a lot for taking such good care of this and following up. The sequence of actions in #1622 (comment) seems reasonable as well. |
EliahKagan
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May 5, 2025
For GitoxideLabs#1622, baseline comparisons in `find_youngest_matching_commit` where Git 2.47.* produces incorrect results were conditionally suppressed in the `regex_matches` test case in GitoxideLabs#1635. That was refined in GitoxideLabs#1719, and further refined in GitoxideLabs#1774. This builds on those, making substantial changes, in view of how: - We expect that CI have a very recent Git. The runners have been past 2.47.* for some time, and now have 2.49.*. Therefore it is no longer desirable to suppress the baseline comparison on CI. - GitoxideLabs#1774 only examined the `regex_matches` test case. That test runs when the `revparse-regex` feature, which is a default `gix` feature, is enabled. But when `revparse-regex` is not enabled, the `contained_string_matches` test case runs instead. This test suffers the same baseline comparison failures with the same Git versions, due to assertions analogous to those that were adjusted to let `regex_matches` proceed and pass. This can be verified by running PATH="$HOME/git-2.47.2/bin:$PATH" GIX_TEST_IGNORE_ARCHIVES=1 \ cargo nextest run -p gix \ revision::spec::from_bytes::regex::find_youngest_matching_commit \ --no-fail-fast --no-default-features \ --features max-performance-safe,comfort,basic where the `PATH` environment variable is set differently if the `git` command provided in a Git 2.47.* installation is elsewhere than `~/git-2.47.2/bin`. Output from such a run can be seen in: https://gist.github.com/EliahKagan/bd8525d048350fc80a7666d8819089db Therefore, if a conditional suppression of the baseline comparison is to be preserved in `regex_matches`, then an analogous suppression under the same conditions should be added to `contained_string_matches`. - Although most operating systems that package Git seem not to have 2.47.* as their latest available downstream version in any release, it seems a few do. In particular, Alpine Linux v3.21 has git 2.47.2-r0, as shown at: https://pkgs.alpinelinux.org/packages?name=git&branch=v3.21&repo=&arch=x86_64&origin=&flagged=&maintainer= Therefore, if it is desirable to work with as wide a range as possible of (currently supported) operating system releases as development environments, there may be a benefit to conditionally suppressing the baseline tests when Git 2.47.* is used *locally*. - However, doing this locally carries two downsides. First, the test code (even if refactored to decrease duplication) will be more complicated than if this is not done. Second, such an environment will still not be suitable for all development tasks, because generating the relevant test fixtures on it will contain incorrect baselines and therefore must not be committed. If they were to be committed by accident, then the problem would most likely be caught, because the tests would fail on CI, in other environments, and even in the same environment when run without `GIX_TEST_IGNORE_ARCHIVES` (in the absence of which the baseline comparisons are not suppressed). So this is not likely to have severely harmful effects. But it could be frustrating, because suppressing the baseline comparisons locally hides the usual evidence that the generated archives might not be suitable for committing. This commit keeps the baseline comparison in `regex_matches` but inverts its CI check so the suppression is only done locally rather than only on CI, adds the same (modified) suppression to the analogous `contained_string_matches` test case, and updates comments accordingly. We may or may not keep this approach.
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The bug in Git that causes #1622 has been fixed since 2.48.0 and does not affect any versions prior to 2.47, but the fix is not backported to subsequent 2.47.* point releases. In particular, 2.47.2 has been released, with backported security fixes, but it does not have a backported fix for this non-security bug.
This builds on #1635 and #1719 by updating the range of Git versions where we skip the affected baseline checks on CI (for platforms this affects on our CI) from
(2, 47, 0)..(2, 47, 2)to(2, 47, 0)..(2, 48, 0), i.e., with the exclusive upper bound changed from 2.47.2 to the correct value of 2.48.0. This also revises the comments accordingly.For further details, see #1622 (comment). This change is item (1) there.