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![Johannes Schindelin](/assets/img/avatar_default.png)
This operation has quadratic complexity, which is especially painful on Windows, where shell scripts are *already* slow (mainly due to the overhead of the POSIX emulation layer). Let's reimplement this with linear complexity (using a hash map to match the commits' subject lines) for the common case; Sadly, the fixup/squash feature's design neglected performance considerations, allowing arbitrary prefixes (read: `fixup! hell` will match the commit subject `hello world`), which means that we are stuck with quadratic performance in the worst case. The reimplemented logic also happens to fix a bug where commented-out lines (representing empty patches) were dropped by the previous code. While at it, clarify how the fixup/squash feature works in `git rebase -i`'s man page. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
334 lines
8.7 KiB
Bash
Executable file
334 lines
8.7 KiB
Bash
Executable file
#!/bin/sh
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test_description='auto squash'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/lib-rebase.sh
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test_expect_success setup '
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echo 0 >file0 &&
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git add . &&
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test_tick &&
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git commit -m "initial commit" &&
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echo 0 >file1 &&
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echo 2 >file2 &&
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git add . &&
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test_tick &&
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git commit -m "first commit" &&
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git tag first-commit &&
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echo 3 >file3 &&
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git add . &&
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test_tick &&
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git commit -m "second commit" &&
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git tag base
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'
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test_auto_fixup () {
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "fixup! first" &&
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git tag $1 &&
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test_tick &&
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git rebase $2 -i HEAD^^^ &&
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git log --oneline >actual &&
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test_line_count = 3 actual &&
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git diff --exit-code $1 &&
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test 1 = "$(git cat-file blob HEAD^:file1)" &&
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test 1 = $(git cat-file commit HEAD^ | grep first | wc -l)
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}
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test_expect_success 'auto fixup (option)' '
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test_auto_fixup final-fixup-option --autosquash
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'
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test_expect_success 'auto fixup (config)' '
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git config rebase.autosquash true &&
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test_auto_fixup final-fixup-config-true &&
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test_must_fail test_auto_fixup fixup-config-true-no --no-autosquash &&
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git config rebase.autosquash false &&
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test_must_fail test_auto_fixup final-fixup-config-false
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'
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test_auto_squash () {
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! first" &&
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git tag $1 &&
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test_tick &&
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git rebase $2 -i HEAD^^^ &&
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git log --oneline >actual &&
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test_line_count = 3 actual &&
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git diff --exit-code $1 &&
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test 1 = "$(git cat-file blob HEAD^:file1)" &&
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test 2 = $(git cat-file commit HEAD^ | grep first | wc -l)
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}
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test_expect_success 'auto squash (option)' '
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test_auto_squash final-squash --autosquash
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'
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test_expect_success 'auto squash (config)' '
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git config rebase.autosquash true &&
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test_auto_squash final-squash-config-true &&
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test_must_fail test_auto_squash squash-config-true-no --no-autosquash &&
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git config rebase.autosquash false &&
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test_must_fail test_auto_squash final-squash-config-false
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'
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test_expect_success 'misspelled auto squash' '
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! forst" &&
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git tag final-missquash &&
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test_tick &&
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git rebase --autosquash -i HEAD^^^ &&
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git log --oneline >actual &&
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test_line_count = 4 actual &&
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git diff --exit-code final-missquash &&
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test 0 = $(git rev-list final-missquash...HEAD | wc -l)
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'
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test_expect_success 'auto squash that matches 2 commits' '
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git reset --hard base &&
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echo 4 >file4 &&
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git add file4 &&
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test_tick &&
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git commit -m "first new commit" &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! first" &&
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git tag final-multisquash &&
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test_tick &&
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git rebase --autosquash -i HEAD~4 &&
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git log --oneline >actual &&
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test_line_count = 4 actual &&
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git diff --exit-code final-multisquash &&
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test 1 = "$(git cat-file blob HEAD^^:file1)" &&
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test 2 = $(git cat-file commit HEAD^^ | grep first | wc -l) &&
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test 1 = $(git cat-file commit HEAD | grep first | wc -l)
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'
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test_expect_success 'auto squash that matches a commit after the squash' '
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! third" &&
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echo 4 >file4 &&
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git add file4 &&
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test_tick &&
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git commit -m "third commit" &&
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git tag final-presquash &&
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test_tick &&
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git rebase --autosquash -i HEAD~4 &&
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git log --oneline >actual &&
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test_line_count = 5 actual &&
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git diff --exit-code final-presquash &&
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test 0 = "$(git cat-file blob HEAD^^:file1)" &&
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test 1 = "$(git cat-file blob HEAD^:file1)" &&
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test 1 = $(git cat-file commit HEAD | grep third | wc -l) &&
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test 1 = $(git cat-file commit HEAD^ | grep third | wc -l)
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'
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test_expect_success 'auto squash that matches a sha1' '
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! $(git rev-parse --short HEAD^)" &&
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git tag final-shasquash &&
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test_tick &&
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git rebase --autosquash -i HEAD^^^ &&
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git log --oneline >actual &&
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test_line_count = 3 actual &&
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git diff --exit-code final-shasquash &&
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test 1 = "$(git cat-file blob HEAD^:file1)" &&
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test 1 = $(git cat-file commit HEAD^ | grep squash | wc -l)
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'
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test_expect_success 'auto squash that matches longer sha1' '
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! $(git rev-parse --short=11 HEAD^)" &&
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git tag final-longshasquash &&
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test_tick &&
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git rebase --autosquash -i HEAD^^^ &&
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git log --oneline >actual &&
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test_line_count = 3 actual &&
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git diff --exit-code final-longshasquash &&
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test 1 = "$(git cat-file blob HEAD^:file1)" &&
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test 1 = $(git cat-file commit HEAD^ | grep squash | wc -l)
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'
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test_auto_commit_flags () {
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit --$1 first-commit &&
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git tag final-commit-$1 &&
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test_tick &&
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git rebase --autosquash -i HEAD^^^ &&
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git log --oneline >actual &&
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test_line_count = 3 actual &&
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git diff --exit-code final-commit-$1 &&
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test 1 = "$(git cat-file blob HEAD^:file1)" &&
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test $2 = $(git cat-file commit HEAD^ | grep first | wc -l)
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}
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test_expect_success 'use commit --fixup' '
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test_auto_commit_flags fixup 1
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'
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test_expect_success 'use commit --squash' '
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test_auto_commit_flags squash 2
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'
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test_auto_fixup_fixup () {
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git reset --hard base &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "$1! first" &&
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echo 2 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "$1! $2! first" &&
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git tag "final-$1-$2" &&
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test_tick &&
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(
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set_cat_todo_editor &&
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test_must_fail git rebase --autosquash -i HEAD^^^^ >actual &&
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cat >expected <<-EOF &&
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pick $(git rev-parse --short HEAD^^^) first commit
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$1 $(git rev-parse --short HEAD^) $1! first
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$1 $(git rev-parse --short HEAD) $1! $2! first
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pick $(git rev-parse --short HEAD^^) second commit
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EOF
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test_cmp expected actual
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) &&
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git rebase --autosquash -i HEAD^^^^ &&
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git log --oneline >actual &&
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test_line_count = 3 actual
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git diff --exit-code "final-$1-$2" &&
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test 2 = "$(git cat-file blob HEAD^:file1)" &&
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if test "$1" = "fixup"
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then
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test 1 = $(git cat-file commit HEAD^ | grep first | wc -l)
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elif test "$1" = "squash"
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then
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test 3 = $(git cat-file commit HEAD^ | grep first | wc -l)
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else
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false
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fi
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}
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test_expect_success C_LOCALE_OUTPUT 'fixup! fixup!' '
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test_auto_fixup_fixup fixup fixup
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'
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test_expect_success C_LOCALE_OUTPUT 'fixup! squash!' '
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test_auto_fixup_fixup fixup squash
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'
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test_expect_success C_LOCALE_OUTPUT 'squash! squash!' '
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test_auto_fixup_fixup squash squash
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'
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test_expect_success C_LOCALE_OUTPUT 'squash! fixup!' '
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test_auto_fixup_fixup squash fixup
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'
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test_expect_success C_LOCALE_OUTPUT 'autosquash with custom inst format' '
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git reset --hard base &&
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git config --add rebase.instructionFormat "[%an @ %ar] %s" &&
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echo 2 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! $(git rev-parse --short HEAD^)" &&
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echo 1 >file1 &&
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git add -u &&
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test_tick &&
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git commit -m "squash! $(git log -n 1 --format=%s HEAD~2)" &&
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git tag final-squash-instFmt &&
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test_tick &&
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git rebase --autosquash -i HEAD~4 &&
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git log --oneline >actual &&
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test_line_count = 3 actual &&
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git diff --exit-code final-squash-instFmt &&
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test 1 = "$(git cat-file blob HEAD^:file1)" &&
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test 2 = $(git cat-file commit HEAD^ | grep squash | wc -l)
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'
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test_expect_success 'autosquash with empty custom instructionFormat' '
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git reset --hard base &&
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test_commit empty-instructionFormat-test &&
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(
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set_cat_todo_editor &&
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test_must_fail git -c rebase.instructionFormat= \
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rebase --autosquash --force -i HEAD^ >actual &&
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git log -1 --format="pick %h %s" >expect &&
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test_cmp expect actual
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)
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'
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set_backup_editor () {
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write_script backup-editor.sh <<-\EOF
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cp "$1" .git/backup-"$(basename "$1")"
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EOF
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test_set_editor "$PWD/backup-editor.sh"
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}
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test_expect_success 'autosquash with multiple empty patches' '
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test_tick &&
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git commit --allow-empty -m "empty" &&
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test_tick &&
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git commit --allow-empty -m "empty2" &&
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test_tick &&
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>fixup &&
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git add fixup &&
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git commit --fixup HEAD^^ &&
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(
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set_backup_editor &&
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GIT_USE_REBASE_HELPER=false \
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git rebase -i --force-rebase --autosquash HEAD~4 &&
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grep empty2 .git/backup-git-rebase-todo
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)
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'
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test_expect_success 'extra spaces after fixup!' '
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base=$(git rev-parse HEAD) &&
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test_commit to-fixup &&
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git commit --allow-empty -m "fixup! to-fixup" &&
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git rebase -i --autosquash --keep-empty HEAD~2 &&
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parent=$(git rev-parse HEAD^) &&
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test $base = $parent
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'
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test_expect_success 'wrapped original subject' '
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if test -d .git/rebase-merge; then git rebase --abort; fi &&
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base=$(git rev-parse HEAD) &&
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echo "wrapped subject" >wrapped &&
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git add wrapped &&
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test_tick &&
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git commit --allow-empty -m "$(printf "To\nfixup")" &&
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test_tick &&
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git commit --allow-empty -m "fixup! To fixup" &&
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git rebase -i --autosquash --keep-empty HEAD~2 &&
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parent=$(git rev-parse HEAD^) &&
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test $base = $parent
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'
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test_done
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