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ea7d894f44
We have a couple of tests in the t34xx range that rely on reflogs. This never really used to be a problem, but in a subsequent commit we will change the default maintenance strategy from "gc" to "geometric", and this will cause us to drop all reflogs in these tests. This may seem surprising and like a bug at first, but it's actually not. The main difference between these two strategies is that the "gc" strategy will skip all maintenance in case the object database is in a well-optimized state. The "geometric" strategy has separate subtasks though, and the conditions for each of these tasks is evaluated on a case by case basis. This means that even if the object database is in good shape, we may still decide to expire reflogs. So why is that a problem? The issue is that Git's test suite hardcodes the committer and author dates to a date in 2005. Interestingly though, these hardcoded dates not only impact the commits, but also the reflog entries. The consequence is that all newly written reflog entries are immediately considered stale as our reflog expiration threshold is in the range of weeks, only. It follows that executing `git reflog expire` will thus immediately purge all reflog entries. This hasn't been a problem in our test suite by pure chance, as the repository shapes simply didn't cause us to perform actual garbage collection. But with the upcoming "geometric" strategy we _will_ start to execute `git reflog expire`, thus surfacing this issue. Prepare for this by explicitly disabling reflog expiration in tests impacted by this upcoming change. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
122 lines
3.1 KiB
Bash
Executable File
122 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2019 Denton Liu
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#
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test_description='git rebase --fork-point test'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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. ./test-lib.sh
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# A---B---D---E (main)
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# \
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# C*---F---G (side)
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#
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# C was formerly part of main but main was rewound to remove C
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#
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test_expect_success setup '
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# Commit dates are hardcoded to 2005, and the reflog entries will have
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# a matching timestamp. Maintenance may thus immediately expire
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# reflogs if it was running.
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git config set gc.reflogExpire never &&
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git config set gc.reflogExpireUnreachable never &&
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test_commit A &&
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test_commit B &&
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test_commit C &&
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git branch -t side &&
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git reset --hard HEAD^ &&
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test_commit D &&
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test_commit E &&
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git checkout side &&
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test_commit F &&
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test_commit G
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'
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do_test_rebase () {
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expected="$1" &&
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shift &&
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git checkout main &&
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git reset --hard E &&
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git checkout side &&
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git reset --hard G &&
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git rebase $* &&
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test_write_lines $expected >expect &&
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git log --pretty=%s >actual &&
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test_cmp expect actual
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}
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test_rebase () {
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expected="$1" &&
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shift &&
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test_expect_success "git rebase $*" "do_test_rebase '$expected' $*"
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}
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test_rebase 'G F E D B A'
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test_rebase 'G F D B A' --onto D
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test_rebase 'G F C B A' --keep-base
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test_rebase 'G F C E D B A' --no-fork-point
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test_rebase 'G F C D B A' --no-fork-point --onto D
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test_rebase 'G F C B A' --no-fork-point --keep-base
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test_rebase 'G F E D B A' --fork-point refs/heads/main
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test_rebase 'G F E D B A' --fork-point main
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test_rebase 'G F D B A' --fork-point --onto D refs/heads/main
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test_rebase 'G F D B A' --fork-point --onto D main
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test_rebase 'G F B A' --fork-point --keep-base refs/heads/main
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test_rebase 'G F B A' --fork-point --keep-base main
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test_rebase 'G F C E D B A' refs/heads/main
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test_rebase 'G F C E D B A' main
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test_rebase 'G F C D B A' --onto D refs/heads/main
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test_rebase 'G F C D B A' --onto D main
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test_rebase 'G F C B A' --keep-base refs/heads/main
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test_rebase 'G F C B A' --keep-base main
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test_expect_success 'git rebase --fork-point with ambiguous refname' '
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git checkout main &&
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git checkout -b one &&
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git checkout side &&
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git tag one &&
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test_must_fail git rebase --fork-point --onto D one
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'
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test_expect_success '--fork-point and --root both given' '
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test_must_fail git rebase --fork-point --root 2>err &&
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test_grep "cannot be used together" err
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'
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test_expect_success 'rebase.forkPoint set to false' '
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test_config rebase.forkPoint false &&
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do_test_rebase "G F C E D B A"
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'
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test_expect_success 'rebase.forkPoint set to false and then to true' '
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test_config_global rebase.forkPoint false &&
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test_config rebase.forkPoint true &&
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do_test_rebase "G F E D B A"
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'
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test_expect_success 'rebase.forkPoint set to false and command line says --fork-point' '
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test_config rebase.forkPoint false &&
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do_test_rebase "G F E D B A" --fork-point
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'
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test_expect_success 'rebase.forkPoint set to true and command line says --no-fork-point' '
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test_config rebase.forkPoint true &&
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do_test_rebase "G F C E D B A" --no-fork-point
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'
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test_expect_success 'rebase.forkPoint set to true and --root given' '
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test_config rebase.forkPoint true &&
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git rebase --root
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'
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test_done
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