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-rwxr-xr-xt/t3210-pack-refs.sh259
1 files changed, 259 insertions, 0 deletions
diff --git a/t/t3210-pack-refs.sh b/t/t3210-pack-refs.sh
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+#!/bin/sh
+#
+# Copyright (c) 2005 Amos Waterland
+# Copyright (c) 2006 Christian Couder
+#
+
+test_description='git pack-refs should not change the branch semantic
+
+This test runs git pack-refs and git show-ref and checks that the branch
+semantic is still the same.
+'
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+test_expect_success 'enable reflogs' '
+ git config core.logallrefupdates true
+'
+
+test_expect_success \
+ 'prepare a trivial repository' \
+ 'echo Hello > A &&
+ git update-index --add A &&
+ git commit -m "Initial commit." &&
+ HEAD=$(git rev-parse --verify HEAD)'
+
+SHA1=
+
+test_expect_success \
+ 'see if git show-ref works as expected' \
+ 'git branch a &&
+ SHA1=$(cat .git/refs/heads/a) &&
+ echo "$SHA1 refs/heads/a" >expect &&
+ git show-ref a >result &&
+ test_cmp expect result'
+
+test_expect_success \
+ 'see if a branch still exists when packed' \
+ 'git branch b &&
+ git pack-refs --all &&
+ rm -f .git/refs/heads/b &&
+ echo "$SHA1 refs/heads/b" >expect &&
+ git show-ref b >result &&
+ test_cmp expect result'
+
+test_expect_success 'git branch c/d should barf if branch c exists' '
+ git branch c &&
+ git pack-refs --all &&
+ rm -f .git/refs/heads/c &&
+ test_must_fail git branch c/d
+'
+
+test_expect_success \
+ 'see if a branch still exists after git pack-refs --prune' \
+ 'git branch e &&
+ git pack-refs --all --prune &&
+ echo "$SHA1 refs/heads/e" >expect &&
+ git show-ref e >result &&
+ test_cmp expect result'
+
+test_expect_success 'see if git pack-refs --prune remove ref files' '
+ git branch f &&
+ git pack-refs --all --prune &&
+ ! test -f .git/refs/heads/f
+'
+
+test_expect_success 'see if git pack-refs --prune removes empty dirs' '
+ git branch r/s/t &&
+ git pack-refs --all --prune &&
+ ! test -e .git/refs/heads/r
+'
+
+test_expect_success \
+ 'git branch g should work when git branch g/h has been deleted' \
+ 'git branch g/h &&
+ git pack-refs --all --prune &&
+ git branch -d g/h &&
+ git branch g &&
+ git pack-refs --all &&
+ git branch -d g'
+
+test_expect_success 'git branch i/j/k should barf if branch i exists' '
+ git branch i &&
+ git pack-refs --all --prune &&
+ test_must_fail git branch i/j/k
+'
+
+test_expect_success \
+ 'test git branch k after branch k/l/m and k/lm have been deleted' \
+ 'git branch k/l &&
+ git branch k/lm &&
+ git branch -d k/l &&
+ git branch k/l/m &&
+ git branch -d k/l/m &&
+ git branch -d k/lm &&
+ git branch k'
+
+test_expect_success \
+ 'test git branch n after some branch deletion and pruning' \
+ 'git branch n/o &&
+ git branch n/op &&
+ git branch -d n/o &&
+ git branch n/o/p &&
+ git branch -d n/op &&
+ git pack-refs --all --prune &&
+ git branch -d n/o/p &&
+ git branch n'
+
+test_expect_success \
+ 'see if up-to-date packed refs are preserved' \
+ 'git branch q &&
+ git pack-refs --all --prune &&
+ git update-ref refs/heads/q refs/heads/q &&
+ ! test -f .git/refs/heads/q'
+
+test_expect_success 'pack, prune and repack' '
+ git tag foo &&
+ git pack-refs --all --prune &&
+ git show-ref >all-of-them &&
+ git pack-refs &&
+ git show-ref >again &&
+ test_cmp all-of-them again
+'
+
+test_expect_success 'explicit pack-refs with dangling packed reference' '
+ git commit --allow-empty -m "soon to be garbage-collected" &&
+ git pack-refs --all &&
+ git reset --hard HEAD^ &&
+ git reflog expire --expire=all --all &&
+ git prune --expire=all &&
+ git pack-refs --all 2>result &&
+ test_must_be_empty result
+'
+
+test_expect_success 'delete ref with dangling packed version' '
+ git checkout -b lamb &&
+ git commit --allow-empty -m "future garbage" &&
+ git pack-refs --all &&
+ git reset --hard HEAD^ &&
+ git checkout main &&
+ git reflog expire --expire=all --all &&
+ git prune --expire=all &&
+ git branch -d lamb 2>result &&
+ test_must_be_empty result
+'
+
+test_expect_success 'delete ref while another dangling packed ref' '
+ git branch lamb &&
+ git commit --allow-empty -m "future garbage" &&
+ git pack-refs --all &&
+ git reset --hard HEAD^ &&
+ git reflog expire --expire=all --all &&
+ git prune --expire=all &&
+ git branch -d lamb 2>result &&
+ test_must_be_empty result
+'
+
+test_expect_success 'pack ref directly below refs/' '
+ git update-ref refs/top HEAD &&
+ git pack-refs --all --prune &&
+ grep refs/top .git/packed-refs &&
+ test_path_is_missing .git/refs/top
+'
+
+test_expect_success 'do not pack ref in refs/bisect' '
+ git update-ref refs/bisect/local HEAD &&
+ git pack-refs --all --prune &&
+ ! grep refs/bisect/local .git/packed-refs >/dev/null &&
+ test_path_is_file .git/refs/bisect/local
+'
+
+test_expect_success 'disable reflogs' '
+ git config core.logallrefupdates false &&
+ rm -rf .git/logs
+'
+
+test_expect_success 'create packed foo/bar/baz branch' '
+ git branch foo/bar/baz &&
+ git pack-refs --all --prune &&
+ test_path_is_missing .git/refs/heads/foo/bar/baz &&
+ test_must_fail git reflog exists refs/heads/foo/bar/baz
+'
+
+test_expect_success 'notice d/f conflict with existing directory' '
+ test_must_fail git branch foo &&
+ test_must_fail git branch foo/bar
+'
+
+test_expect_success 'existing directory reports concrete ref' '
+ test_must_fail git branch foo 2>stderr &&
+ test_i18ngrep refs/heads/foo/bar/baz stderr
+'
+
+test_expect_success 'notice d/f conflict with existing ref' '
+ test_must_fail git branch foo/bar/baz/extra &&
+ test_must_fail git branch foo/bar/baz/lots/of/extra/components
+'
+
+test_expect_success 'reject packed-refs with unterminated line' '
+ cp .git/packed-refs .git/packed-refs.bak &&
+ test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
+ printf "%s" "$HEAD refs/zzzzz" >>.git/packed-refs &&
+ echo "fatal: unterminated line in .git/packed-refs: $HEAD refs/zzzzz" >expected_err &&
+ test_must_fail git for-each-ref >out 2>err &&
+ test_cmp expected_err err
+'
+
+test_expect_success 'reject packed-refs containing junk' '
+ cp .git/packed-refs .git/packed-refs.bak &&
+ test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
+ printf "%s\n" "bogus content" >>.git/packed-refs &&
+ echo "fatal: unexpected line in .git/packed-refs: bogus content" >expected_err &&
+ test_must_fail git for-each-ref >out 2>err &&
+ test_cmp expected_err err
+'
+
+test_expect_success 'reject packed-refs with a short SHA-1' '
+ cp .git/packed-refs .git/packed-refs.bak &&
+ test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
+ printf "%.7s %s\n" $HEAD refs/zzzzz >>.git/packed-refs &&
+ printf "fatal: unexpected line in .git/packed-refs: %.7s %s\n" $HEAD refs/zzzzz >expected_err &&
+ test_must_fail git for-each-ref >out 2>err &&
+ test_cmp expected_err err
+'
+
+test_expect_success 'timeout if packed-refs.lock exists' '
+ LOCK=.git/packed-refs.lock &&
+ >"$LOCK" &&
+ test_when_finished "rm -f $LOCK" &&
+ test_must_fail git pack-refs --all --prune
+'
+
+test_expect_success 'retry acquiring packed-refs.lock' '
+ LOCK=.git/packed-refs.lock &&
+ >"$LOCK" &&
+ test_when_finished "wait && rm -f $LOCK" &&
+ {
+ ( sleep 1 && rm -f $LOCK ) &
+ } &&
+ git -c core.packedrefstimeout=3000 pack-refs --all --prune
+'
+
+test_expect_success SYMLINKS 'pack symlinked packed-refs' '
+ # First make sure that symlinking works when reading:
+ git update-ref refs/heads/lossy refs/heads/main &&
+ git for-each-ref >all-refs-before &&
+ mv .git/packed-refs .git/my-deviant-packed-refs &&
+ ln -s my-deviant-packed-refs .git/packed-refs &&
+ git for-each-ref >all-refs-linked &&
+ test_cmp all-refs-before all-refs-linked &&
+ git pack-refs --all --prune &&
+ git for-each-ref >all-refs-packed &&
+ test_cmp all-refs-before all-refs-packed &&
+ test -h .git/packed-refs &&
+ test "$(test_readlink .git/packed-refs)" = "my-deviant-packed-refs"
+'
+
+test_done