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https://github.com/git/git
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0cacebf099
read_directory() code ignores all paths named ".git" even if it's not a valid git repository. See treat_path() for details. Since ".git" is basically invisible to read_directory(), when we are asked to invalidate a path that contains ".git", we can safely ignore it because the slow path would not consider it anyway. This helps when fsmonitor is used and we have a real ".git" repo at worktree top. Occasionally .git/index will be updated and if the fsmonitor hook does not filter it, untracked cache is asked to invalidate the path ".git/index". Without this patch, we invalidate the root directory unncessarily, which: - makes read_directory() fall back to slow path for root directory (slower) - makes the index dirty (because UNTR extension is updated). Depending on the index size, writing it down could also be slow. A note about the new "safe_path" knob. Since this new check could be relatively expensive, avoid it when we know it's not needed. If the path comes from the index, it can't contain ".git". If it does contain, we may be screwed up at many more levels, not just this one. Noticed-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
357 lines
8.7 KiB
Bash
Executable file
357 lines
8.7 KiB
Bash
Executable file
#!/bin/sh
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test_description='git status with file system watcher'
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. ./test-lib.sh
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#
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# To run the entire git test suite using fsmonitor:
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#
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# copy t/t7519/fsmonitor-all to a location in your path and then set
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# GIT_FSMONITOR_TEST=fsmonitor-all and run your tests.
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#
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# Note, after "git reset --hard HEAD" no extensions exist other than 'TREE'
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# "git update-index --fsmonitor" can be used to get the extension written
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# before testing the results.
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clean_repo () {
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git reset --hard HEAD &&
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git clean -fd
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}
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dirty_repo () {
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: >untracked &&
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: >dir1/untracked &&
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: >dir2/untracked &&
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echo 1 >modified &&
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echo 2 >dir1/modified &&
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echo 3 >dir2/modified &&
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echo 4 >new &&
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echo 5 >dir1/new &&
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echo 6 >dir2/new
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}
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write_integration_script () {
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write_script .git/hooks/fsmonitor-test<<-\EOF
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if test "$#" -ne 2
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then
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echo "$0: exactly 2 arguments expected"
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exit 2
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fi
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if test "$1" != 1
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then
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echo "Unsupported core.fsmonitor hook version." >&2
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exit 1
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fi
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printf "untracked\0"
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printf "dir1/untracked\0"
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printf "dir2/untracked\0"
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printf "modified\0"
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printf "dir1/modified\0"
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printf "dir2/modified\0"
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printf "new\0"
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printf "dir1/new\0"
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printf "dir2/new\0"
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EOF
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}
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test_lazy_prereq UNTRACKED_CACHE '
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{ git update-index --test-untracked-cache; ret=$?; } &&
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test $ret -ne 1
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'
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test_expect_success 'setup' '
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mkdir -p .git/hooks &&
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: >tracked &&
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: >modified &&
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mkdir dir1 &&
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: >dir1/tracked &&
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: >dir1/modified &&
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mkdir dir2 &&
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: >dir2/tracked &&
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: >dir2/modified &&
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git -c core.fsmonitor= add . &&
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git -c core.fsmonitor= commit -m initial &&
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git config core.fsmonitor .git/hooks/fsmonitor-test &&
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cat >.gitignore <<-\EOF
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.gitignore
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expect*
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actual*
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marker*
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EOF
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'
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# test that the fsmonitor extension is off by default
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test_expect_success 'fsmonitor extension is off by default' '
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test-dump-fsmonitor >actual &&
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grep "^no fsmonitor" actual
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'
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# test that "update-index --fsmonitor" adds the fsmonitor extension
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test_expect_success 'update-index --fsmonitor" adds the fsmonitor extension' '
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git update-index --fsmonitor &&
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test-dump-fsmonitor >actual &&
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grep "^fsmonitor last update" actual
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'
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# test that "update-index --no-fsmonitor" removes the fsmonitor extension
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test_expect_success 'update-index --no-fsmonitor" removes the fsmonitor extension' '
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git update-index --no-fsmonitor &&
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test-dump-fsmonitor >actual &&
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grep "^no fsmonitor" actual
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'
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cat >expect <<EOF &&
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h dir1/modified
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H dir1/tracked
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h dir2/modified
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H dir2/tracked
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h modified
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H tracked
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EOF
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# test that "update-index --fsmonitor-valid" sets the fsmonitor valid bit
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test_expect_success 'update-index --fsmonitor-valid" sets the fsmonitor valid bit' '
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git update-index --fsmonitor &&
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git update-index --fsmonitor-valid dir1/modified &&
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git update-index --fsmonitor-valid dir2/modified &&
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git update-index --fsmonitor-valid modified &&
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git ls-files -f >actual &&
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test_cmp expect actual
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'
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cat >expect <<EOF &&
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H dir1/modified
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H dir1/tracked
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H dir2/modified
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H dir2/tracked
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H modified
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H tracked
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EOF
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# test that "update-index --no-fsmonitor-valid" clears the fsmonitor valid bit
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test_expect_success 'update-index --no-fsmonitor-valid" clears the fsmonitor valid bit' '
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git update-index --no-fsmonitor-valid dir1/modified &&
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git update-index --no-fsmonitor-valid dir2/modified &&
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git update-index --no-fsmonitor-valid modified &&
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git ls-files -f >actual &&
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test_cmp expect actual
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'
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cat >expect <<EOF &&
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H dir1/modified
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H dir1/tracked
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H dir2/modified
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H dir2/tracked
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H modified
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H tracked
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EOF
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# test that all files returned by the script get flagged as invalid
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test_expect_success 'all files returned by integration script get flagged as invalid' '
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write_integration_script &&
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dirty_repo &&
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git update-index --fsmonitor &&
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git ls-files -f >actual &&
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test_cmp expect actual
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'
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cat >expect <<EOF &&
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H dir1/modified
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h dir1/new
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H dir1/tracked
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H dir2/modified
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h dir2/new
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H dir2/tracked
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H modified
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h new
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H tracked
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EOF
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# test that newly added files are marked valid
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test_expect_success 'newly added files are marked valid' '
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git add new &&
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git add dir1/new &&
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git add dir2/new &&
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git ls-files -f >actual &&
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test_cmp expect actual
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'
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cat >expect <<EOF &&
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H dir1/modified
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h dir1/new
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h dir1/tracked
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H dir2/modified
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h dir2/new
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h dir2/tracked
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H modified
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h new
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h tracked
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EOF
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# test that all unmodified files get marked valid
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test_expect_success 'all unmodified files get marked valid' '
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# modified files result in update-index returning 1
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test_must_fail git update-index --refresh --force-write-index &&
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git ls-files -f >actual &&
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test_cmp expect actual
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'
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cat >expect <<EOF &&
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H dir1/modified
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h dir1/tracked
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h dir2/modified
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h dir2/tracked
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h modified
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h tracked
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EOF
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# test that *only* files returned by the integration script get flagged as invalid
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test_expect_success '*only* files returned by the integration script get flagged as invalid' '
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write_script .git/hooks/fsmonitor-test<<-\EOF &&
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printf "dir1/modified\0"
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EOF
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clean_repo &&
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git update-index --refresh --force-write-index &&
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echo 1 >modified &&
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echo 2 >dir1/modified &&
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echo 3 >dir2/modified &&
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test_must_fail git update-index --refresh --force-write-index &&
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git ls-files -f >actual &&
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test_cmp expect actual
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'
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# Ensure commands that call refresh_index() to move the index back in time
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# properly invalidate the fsmonitor cache
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test_expect_success 'refresh_index() invalidates fsmonitor cache' '
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write_script .git/hooks/fsmonitor-test<<-\EOF &&
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EOF
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clean_repo &&
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dirty_repo &&
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git add . &&
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git commit -m "to reset" &&
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git reset HEAD~1 &&
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git status >actual &&
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git -c core.fsmonitor= status >expect &&
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test_i18ncmp expect actual
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'
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# test fsmonitor with and without preloadIndex
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preload_values="false true"
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for preload_val in $preload_values
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do
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test_expect_success "setup preloadIndex to $preload_val" '
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git config core.preloadIndex $preload_val &&
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if test $preload_val = true
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then
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GIT_FORCE_PRELOAD_TEST=$preload_val; export GIT_FORCE_PRELOAD_TEST
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else
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unset GIT_FORCE_PRELOAD_TEST
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fi
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'
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# test fsmonitor with and without the untracked cache (if available)
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uc_values="false"
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test_have_prereq UNTRACKED_CACHE && uc_values="false true"
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for uc_val in $uc_values
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do
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test_expect_success "setup untracked cache to $uc_val" '
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git config core.untrackedcache $uc_val
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'
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# Status is well tested elsewhere so we'll just ensure that the results are
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# the same when using core.fsmonitor.
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test_expect_success 'compare status with and without fsmonitor' '
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write_integration_script &&
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clean_repo &&
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dirty_repo &&
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git add new &&
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git add dir1/new &&
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git add dir2/new &&
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git status >actual &&
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git -c core.fsmonitor= status >expect &&
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test_i18ncmp expect actual
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'
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# Make sure it's actually skipping the check for modified and untracked
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# (if enabled) files unless it is told about them.
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test_expect_success "status doesn't detect unreported modifications" '
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write_script .git/hooks/fsmonitor-test<<-\EOF &&
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:>marker
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EOF
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clean_repo &&
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git status &&
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test_path_is_file marker &&
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dirty_repo &&
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rm -f marker &&
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git status >actual &&
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test_path_is_file marker &&
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test_i18ngrep ! "Changes not staged for commit:" actual &&
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if test $uc_val = true
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then
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test_i18ngrep ! "Untracked files:" actual
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fi &&
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if test $uc_val = false
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then
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test_i18ngrep "Untracked files:" actual
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fi &&
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rm -f marker
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'
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done
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done
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# test that splitting the index dosn't interfere
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test_expect_success 'splitting the index results in the same state' '
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write_integration_script &&
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dirty_repo &&
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git update-index --fsmonitor &&
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git ls-files -f >expect &&
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test-dump-fsmonitor >&2 && echo &&
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git update-index --fsmonitor --split-index &&
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test-dump-fsmonitor >&2 && echo &&
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git ls-files -f >actual &&
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test_cmp expect actual
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'
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test_expect_success UNTRACKED_CACHE 'ignore .git changes when invalidating UNTR' '
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test_create_repo dot-git &&
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(
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cd dot-git &&
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mkdir -p .git/hooks &&
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: >tracked &&
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: >modified &&
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mkdir dir1 &&
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: >dir1/tracked &&
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: >dir1/modified &&
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mkdir dir2 &&
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: >dir2/tracked &&
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: >dir2/modified &&
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write_integration_script &&
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git config core.fsmonitor .git/hooks/fsmonitor-test &&
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git update-index --untracked-cache &&
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git update-index --fsmonitor &&
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GIT_TRACE_UNTRACKED_STATS="$TRASH_DIRECTORY/trace-before" \
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git status &&
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test-dump-untracked-cache >../before
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) &&
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cat >>dot-git/.git/hooks/fsmonitor-test <<-\EOF &&
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printf ".git\0"
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printf ".git/index\0"
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printf "dir1/.git\0"
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printf "dir1/.git/index\0"
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EOF
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(
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cd dot-git &&
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GIT_TRACE_UNTRACKED_STATS="$TRASH_DIRECTORY/trace-after" \
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git status &&
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test-dump-untracked-cache >../after
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) &&
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grep "directory invalidation" trace-before >>before &&
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grep "directory invalidation" trace-after >>after &&
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# UNTR extension unchanged, dir invalidation count unchanged
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test_cmp before after
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'
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test_done
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