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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
commitc8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch)
tree24e09d9f84dec336720cf393e156089ca2835791 /t/t1400-update-ref.sh
parentInitial commit. (diff)
downloadgit-upstream/1%2.39.2.tar.xz
git-upstream/1%2.39.2.zip
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 't/t1400-update-ref.sh')
-rwxr-xr-xt/t1400-update-ref.sh1644
1 files changed, 1644 insertions, 0 deletions
diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
new file mode 100755
index 0000000..cf58cf0
--- /dev/null
+++ b/t/t1400-update-ref.sh
@@ -0,0 +1,1644 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Shawn Pearce
+#
+
+test_description='Test git update-ref and basic ref logging'
+. ./test-lib.sh
+
+Z=$ZERO_OID
+
+m=refs/heads/main
+n_dir=refs/heads/gu
+n=$n_dir/fixes
+outside=refs/foo
+bare=bare-repo
+
+create_test_commits ()
+{
+ prfx="$1"
+ for name in A B C D E F
+ do
+ test_tick &&
+ T=$(git write-tree) &&
+ sha1=$(echo $name | git commit-tree $T) &&
+ eval $prfx$name=$sha1
+ done
+}
+
+test_expect_success setup '
+ git checkout --orphan main &&
+ create_test_commits "" &&
+ mkdir $bare &&
+ cd $bare &&
+ git init --bare -b main &&
+ create_test_commits "bare" &&
+ cd -
+'
+
+test_expect_success "create $m" '
+ git update-ref $m $A &&
+ test $A = $(git show-ref -s --verify $m)
+'
+test_expect_success "create $m with oldvalue verification" '
+ git update-ref $m $B $A &&
+ test $B = $(git show-ref -s --verify $m)
+'
+test_expect_success "fail to delete $m with stale ref" '
+ test_must_fail git update-ref -d $m $A &&
+ test $B = "$(git show-ref -s --verify $m)"
+'
+test_expect_success "delete $m" '
+ test_when_finished "git update-ref -d $m" &&
+ git update-ref -d $m $B &&
+ test_must_fail git show-ref --verify -q $m
+'
+
+test_expect_success "delete $m without oldvalue verification" '
+ test_when_finished "git update-ref -d $m" &&
+ git update-ref $m $A &&
+ test $A = $(git show-ref -s --verify $m) &&
+ git update-ref -d $m &&
+ test_must_fail git show-ref --verify -q $m
+'
+
+test_expect_success "fail to create $n" '
+ test_when_finished "rm -f .git/$n_dir" &&
+ touch .git/$n_dir &&
+ test_must_fail git update-ref $n $A
+'
+
+test_expect_success "create $m (by HEAD)" '
+ git update-ref HEAD $A &&
+ test $A = $(git show-ref -s --verify $m)
+'
+test_expect_success "create $m (by HEAD) with oldvalue verification" '
+ git update-ref HEAD $B $A &&
+ test $B = $(git show-ref -s --verify $m)
+'
+test_expect_success "fail to delete $m (by HEAD) with stale ref" '
+ test_must_fail git update-ref -d HEAD $A &&
+ test $B = $(git show-ref -s --verify $m)
+'
+test_expect_success "delete $m (by HEAD)" '
+ test_when_finished "git update-ref -d $m" &&
+ git update-ref -d HEAD $B &&
+ test_must_fail git show-ref --verify -q $m
+'
+
+test_expect_success "deleting current branch adds message to HEAD's log" '
+ test_when_finished "git update-ref -d $m" &&
+ git update-ref $m $A &&
+ git symbolic-ref HEAD $m &&
+ git update-ref -m delete-$m -d $m &&
+ test_must_fail git show-ref --verify -q $m &&
+ grep "delete-$m$" .git/logs/HEAD
+'
+
+test_expect_success "deleting by HEAD adds message to HEAD's log" '
+ test_when_finished "git update-ref -d $m" &&
+ git update-ref $m $A &&
+ git symbolic-ref HEAD $m &&
+ git update-ref -m delete-by-head -d HEAD &&
+ test_must_fail git show-ref --verify -q $m &&
+ grep "delete-by-head$" .git/logs/HEAD
+'
+
+test_expect_success 'update-ref does not create reflogs by default' '
+ test_when_finished "git update-ref -d $outside" &&
+ git update-ref $outside $A &&
+ git rev-parse $A >expect &&
+ git rev-parse $outside >actual &&
+ test_cmp expect actual &&
+ test_must_fail git reflog exists $outside
+'
+
+test_expect_success 'update-ref creates reflogs with --create-reflog' '
+ test_when_finished "git update-ref -d $outside" &&
+ git update-ref --create-reflog $outside $A &&
+ git rev-parse $A >expect &&
+ git rev-parse $outside >actual &&
+ test_cmp expect actual &&
+ git reflog exists $outside
+'
+
+test_expect_success 'creates no reflog in bare repository' '
+ git -C $bare update-ref $m $bareA &&
+ git -C $bare rev-parse $bareA >expect &&
+ git -C $bare rev-parse $m >actual &&
+ test_cmp expect actual &&
+ test_must_fail git -C $bare reflog exists $m
+'
+
+test_expect_success 'core.logAllRefUpdates=true creates reflog in bare repository' '
+ test_when_finished "git -C $bare config --unset core.logAllRefUpdates && \
+ rm $bare/logs/$m" &&
+ git -C $bare config core.logAllRefUpdates true &&
+ git -C $bare update-ref $m $bareB &&
+ git -C $bare rev-parse $bareB >expect &&
+ git -C $bare rev-parse $m >actual &&
+ test_cmp expect actual &&
+ git -C $bare reflog exists $m
+'
+
+test_expect_success 'core.logAllRefUpdates=true does not create reflog by default' '
+ test_config core.logAllRefUpdates true &&
+ test_when_finished "git update-ref -d $outside" &&
+ git update-ref $outside $A &&
+ git rev-parse $A >expect &&
+ git rev-parse $outside >actual &&
+ test_cmp expect actual &&
+ test_must_fail git reflog exists $outside
+'
+
+test_expect_success 'core.logAllRefUpdates=always creates reflog by default' '
+ test_config core.logAllRefUpdates always &&
+ test_when_finished "git update-ref -d $outside" &&
+ git update-ref $outside $A &&
+ git rev-parse $A >expect &&
+ git rev-parse $outside >actual &&
+ test_cmp expect actual &&
+ git reflog exists $outside
+'
+
+test_expect_success 'core.logAllRefUpdates=always creates reflog for ORIG_HEAD' '
+ test_config core.logAllRefUpdates always &&
+ git update-ref ORIG_HEAD $A &&
+ git reflog exists ORIG_HEAD
+'
+
+test_expect_success '--no-create-reflog overrides core.logAllRefUpdates=always' '
+ test_config core.logAllRefUpdates true &&
+ test_when_finished "git update-ref -d $outside" &&
+ git update-ref --no-create-reflog $outside $A &&
+ git rev-parse $A >expect &&
+ git rev-parse $outside >actual &&
+ test_cmp expect actual &&
+ test_must_fail git reflog exists $outside
+'
+
+test_expect_success "create $m (by HEAD)" '
+ git update-ref HEAD $A &&
+ test $A = $(git show-ref -s --verify $m)
+'
+test_expect_success 'pack refs' '
+ git pack-refs --all
+'
+test_expect_success "move $m (by HEAD)" '
+ git update-ref HEAD $B $A &&
+ test $B = $(git show-ref -s --verify $m)
+'
+test_expect_success "delete $m (by HEAD) should remove both packed and loose $m" '
+ test_when_finished "git update-ref -d $m" &&
+ git update-ref -d HEAD $B &&
+ ! grep "$m" .git/packed-refs &&
+ test_must_fail git show-ref --verify -q $m
+'
+
+test_expect_success 'delete symref without dereference' '
+ test_when_finished "git update-ref -d $m" &&
+ echo foo >foo.c &&
+ git add foo.c &&
+ git commit -m foo &&
+ git symbolic-ref SYMREF $m &&
+ git update-ref --no-deref -d SYMREF &&
+ git show-ref --verify -q $m &&
+ test_must_fail git show-ref --verify -q SYMREF &&
+ test_must_fail git symbolic-ref SYMREF
+'
+
+test_expect_success 'delete symref without dereference when the referred ref is packed' '
+ test_when_finished "git update-ref -d $m" &&
+ echo foo >foo.c &&
+ git add foo.c &&
+ git commit -m foo &&
+ git symbolic-ref SYMREF $m &&
+ git pack-refs --all &&
+ git update-ref --no-deref -d SYMREF &&
+ git show-ref --verify -q $m &&
+ test_must_fail git show-ref --verify -q SYMREF &&
+ test_must_fail git symbolic-ref SYMREF
+'
+
+test_expect_success 'update-ref -d is not confused by self-reference' '
+ git symbolic-ref refs/heads/self refs/heads/self &&
+ test_when_finished "rm -f .git/refs/heads/self" &&
+ test_path_is_file .git/refs/heads/self &&
+ test_must_fail git update-ref -d refs/heads/self &&
+ test_path_is_file .git/refs/heads/self
+'
+
+test_expect_success 'update-ref --no-deref -d can delete self-reference' '
+ git symbolic-ref refs/heads/self refs/heads/self &&
+ test_when_finished "rm -f .git/refs/heads/self" &&
+ test_path_is_file .git/refs/heads/self &&
+ git update-ref --no-deref -d refs/heads/self &&
+ test_must_fail git show-ref --verify -q refs/heads/self
+'
+
+test_expect_success 'update-ref --no-deref -d can delete reference to bad ref' '
+ >.git/refs/heads/bad &&
+ test_when_finished "rm -f .git/refs/heads/bad" &&
+ git symbolic-ref refs/heads/ref-to-bad refs/heads/bad &&
+ test_when_finished "git update-ref -d refs/heads/ref-to-bad" &&
+ test_path_is_file .git/refs/heads/ref-to-bad &&
+ git update-ref --no-deref -d refs/heads/ref-to-bad &&
+ test_must_fail git show-ref --verify -q refs/heads/ref-to-bad
+'
+
+test_expect_success '(not) create HEAD with old sha1' '
+ test_must_fail git update-ref HEAD $A $B
+'
+test_expect_success "(not) prior created .git/$m" '
+ test_when_finished "git update-ref -d $m" &&
+ test_must_fail git show-ref --verify -q $m
+'
+
+test_expect_success 'create HEAD' '
+ git update-ref HEAD $A
+'
+test_expect_success '(not) change HEAD with wrong SHA1' '
+ test_must_fail git update-ref HEAD $B $Z
+'
+test_expect_success "(not) changed .git/$m" '
+ test_when_finished "git update-ref -d $m" &&
+ ! test $B = $(git show-ref -s --verify $m)
+'
+
+rm -f .git/logs/refs/heads/main
+test_expect_success "create $m (logged by touch)" '
+ test_config core.logAllRefUpdates false &&
+ GIT_COMMITTER_DATE="2005-05-26 23:30" \
+ git update-ref --create-reflog HEAD $A -m "Initial Creation" &&
+ test $A = $(git show-ref -s --verify $m)
+'
+test_expect_success "update $m (logged by touch)" '
+ test_config core.logAllRefUpdates false &&
+ GIT_COMMITTER_DATE="2005-05-26 23:31" \
+ git update-ref HEAD $B $A -m "Switch" &&
+ test $B = $(git show-ref -s --verify $m)
+'
+test_expect_success "set $m (logged by touch)" '
+ test_config core.logAllRefUpdates false &&
+ GIT_COMMITTER_DATE="2005-05-26 23:41" \
+ git update-ref HEAD $A &&
+ test $A = $(git show-ref -s --verify $m)
+'
+
+test_expect_success 'empty directory removal' '
+ git branch d1/d2/r1 HEAD &&
+ git branch d1/r2 HEAD &&
+ test_path_is_file .git/refs/heads/d1/d2/r1 &&
+ test_path_is_file .git/logs/refs/heads/d1/d2/r1 &&
+ git branch -d d1/d2/r1 &&
+ test_must_fail git show-ref --verify -q refs/heads/d1/d2 &&
+ test_must_fail git show-ref --verify -q logs/refs/heads/d1/d2 &&
+ test_path_is_file .git/refs/heads/d1/r2 &&
+ test_path_is_file .git/logs/refs/heads/d1/r2
+'
+
+test_expect_success 'symref empty directory removal' '
+ git branch e1/e2/r1 HEAD &&
+ git branch e1/r2 HEAD &&
+ git checkout e1/e2/r1 &&
+ test_when_finished "git checkout main" &&
+ test_path_is_file .git/refs/heads/e1/e2/r1 &&
+ test_path_is_file .git/logs/refs/heads/e1/e2/r1 &&
+ git update-ref -d HEAD &&
+ test_must_fail git show-ref --verify -q refs/heads/e1/e2 &&
+ test_must_fail git show-ref --verify -q logs/refs/heads/e1/e2 &&
+ test_path_is_file .git/refs/heads/e1/r2 &&
+ test_path_is_file .git/logs/refs/heads/e1/r2 &&
+ test_path_is_file .git/logs/HEAD
+'
+
+cat >expect <<EOF
+$Z $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000 Initial Creation
+$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150260 +0000 Switch
+$B $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150860 +0000
+EOF
+test_expect_success "verifying $m's log (logged by touch)" '
+ test_when_finished "git update-ref -d $m && rm -rf .git/logs actual expect" &&
+ test-tool ref-store main for-each-reflog-ent $m >actual &&
+ test_cmp actual expect
+'
+
+test_expect_success "create $m (logged by config)" '
+ test_config core.logAllRefUpdates true &&
+ GIT_COMMITTER_DATE="2005-05-26 23:32" \
+ git update-ref HEAD $A -m "Initial Creation" &&
+ test $A = $(git show-ref -s --verify $m)
+'
+test_expect_success "update $m (logged by config)" '
+ test_config core.logAllRefUpdates true &&
+ GIT_COMMITTER_DATE="2005-05-26 23:33" \
+ git update-ref HEAD $B $A -m "Switch" &&
+ test $B = $(git show-ref -s --verify $m)
+'
+test_expect_success "set $m (logged by config)" '
+ test_config core.logAllRefUpdates true &&
+ GIT_COMMITTER_DATE="2005-05-26 23:43" \
+ git update-ref HEAD $A &&
+ test $A = $(git show-ref -s --verify $m)
+'
+
+cat >expect <<EOF
+$Z $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150320 +0000 Initial Creation
+$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150380 +0000 Switch
+$B $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150980 +0000
+EOF
+test_expect_success "verifying $m's log (logged by config)" '
+ test_when_finished "git update-ref -d $m && rm -rf .git/logs actual expect" &&
+ test-tool ref-store main for-each-reflog-ent $m >actual &&
+ test_cmp actual expect
+'
+
+test_expect_success 'set up for querying the reflog' '
+ git update-ref $m $D &&
+ cat >.git/logs/$m <<-EOF
+ $Z $C $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150320 -0500
+ $C $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150350 -0500
+ $A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150380 -0500
+ $F $Z $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150680 -0500
+ $Z $E $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150980 -0500
+ EOF
+'
+
+ed="Thu, 26 May 2005 18:32:00 -0500"
+gd="Thu, 26 May 2005 18:33:00 -0500"
+ld="Thu, 26 May 2005 18:43:00 -0500"
+test_expect_success 'Query "main@{May 25 2005}" (before history)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{May 25 2005}" >o 2>e &&
+ echo "$C" >expect &&
+ test_cmp expect o &&
+ echo "warning: log for '\''main'\'' only goes back to $ed" >expect &&
+ test_cmp expect e
+'
+test_expect_success 'Query main@{2005-05-25} (before history)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify main@{2005-05-25} >o 2>e &&
+ echo "$C" >expect &&
+ test_cmp expect o &&
+ echo "warning: log for '\''main'\'' only goes back to $ed" >expect &&
+ test_cmp expect e
+'
+test_expect_success 'Query "main@{May 26 2005 23:31:59}" (1 second before history)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{May 26 2005 23:31:59}" >o 2>e &&
+ echo "$C" >expect &&
+ test_cmp expect o &&
+ echo "warning: log for '\''main'\'' only goes back to $ed" >expect &&
+ test_cmp expect e
+'
+test_expect_success 'Query "main@{May 26 2005 23:32:00}" (exactly history start)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{May 26 2005 23:32:00}" >o 2>e &&
+ echo "$C" >expect &&
+ test_cmp expect o &&
+ test_must_be_empty e
+'
+test_expect_success 'Query "main@{May 26 2005 23:32:30}" (first non-creation change)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{May 26 2005 23:32:30}" >o 2>e &&
+ echo "$A" >expect &&
+ test_cmp expect o &&
+ test_must_be_empty e
+'
+test_expect_success 'Query "main@{2005-05-26 23:33:01}" (middle of history with gap)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{2005-05-26 23:33:01}" >o 2>e &&
+ echo "$B" >expect &&
+ test_cmp expect o &&
+ test_i18ngrep -F "warning: log for ref $m has gap after $gd" e
+'
+test_expect_success 'Query "main@{2005-05-26 23:38:00}" (middle of history)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{2005-05-26 23:38:00}" >o 2>e &&
+ echo "$Z" >expect &&
+ test_cmp expect o &&
+ test_must_be_empty e
+'
+test_expect_success 'Query "main@{2005-05-26 23:43:00}" (exact end of history)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{2005-05-26 23:43:00}" >o 2>e &&
+ echo "$E" >expect &&
+ test_cmp expect o &&
+ test_must_be_empty e
+'
+test_expect_success 'Query "main@{2005-05-28}" (past end of history)' '
+ test_when_finished "rm -f o e" &&
+ git rev-parse --verify "main@{2005-05-28}" >o 2>e &&
+ echo "$D" >expect &&
+ test_cmp expect o &&
+ test_i18ngrep -F "warning: log for ref $m unexpectedly ended on $ld" e
+'
+
+rm -f .git/$m .git/logs/$m expect
+
+test_expect_success 'creating initial files' '
+ test_when_finished rm -f M &&
+ echo TEST >F &&
+ git add F &&
+ GIT_AUTHOR_DATE="2005-05-26 23:30" \
+ GIT_COMMITTER_DATE="2005-05-26 23:30" git commit -m add -a &&
+ h_TEST=$(git rev-parse --verify HEAD) &&
+ echo The other day this did not work. >M &&
+ echo And then Bob told me how to fix it. >>M &&
+ echo OTHER >F &&
+ GIT_AUTHOR_DATE="2005-05-26 23:41" \
+ GIT_COMMITTER_DATE="2005-05-26 23:41" git commit -F M -a &&
+ h_OTHER=$(git rev-parse --verify HEAD) &&
+ GIT_AUTHOR_DATE="2005-05-26 23:44" \
+ GIT_COMMITTER_DATE="2005-05-26 23:44" git commit --amend &&
+ h_FIXED=$(git rev-parse --verify HEAD) &&
+ echo Merged initial commit and a later commit. >M &&
+ echo $h_TEST >.git/MERGE_HEAD &&
+ GIT_AUTHOR_DATE="2005-05-26 23:45" \
+ GIT_COMMITTER_DATE="2005-05-26 23:45" git commit -F M &&
+ h_MERGED=$(git rev-parse --verify HEAD)
+'
+
+cat >expect <<EOF
+$Z $h_TEST $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000 commit (initial): add
+$h_TEST $h_OTHER $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150860 +0000 commit: The other day this did not work.
+$h_OTHER $h_FIXED $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117151040 +0000 commit (amend): The other day this did not work.
+$h_FIXED $h_MERGED $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117151100 +0000 commit (merge): Merged initial commit and a later commit.
+EOF
+test_expect_success 'git commit logged updates' '
+ test-tool ref-store main for-each-reflog-ent $m >actual &&
+ test_cmp expect actual
+'
+unset h_TEST h_OTHER h_FIXED h_MERGED
+
+test_expect_success 'git cat-file blob main:F (expect OTHER)' '
+ test OTHER = $(git cat-file blob main:F)
+'
+test_expect_success 'git cat-file blob main@{2005-05-26 23:30}:F (expect TEST)' '
+ test TEST = $(git cat-file blob "main@{2005-05-26 23:30}:F")
+'
+test_expect_success 'git cat-file blob main@{2005-05-26 23:42}:F (expect OTHER)' '
+ test OTHER = $(git cat-file blob "main@{2005-05-26 23:42}:F")
+'
+
+# Test adding and deleting pseudorefs
+
+test_expect_success 'given old value for missing pseudoref, do not create' '
+ test_must_fail git update-ref PSEUDOREF $A $B 2>err &&
+ test_must_fail git rev-parse PSEUDOREF &&
+ test_i18ngrep "unable to resolve reference" err
+'
+
+test_expect_success 'create pseudoref' '
+ git update-ref PSEUDOREF $A &&
+ test $A = $(git rev-parse PSEUDOREF)
+'
+
+test_expect_success 'overwrite pseudoref with no old value given' '
+ git update-ref PSEUDOREF $B &&
+ test $B = $(git rev-parse PSEUDOREF)
+'
+
+test_expect_success 'overwrite pseudoref with correct old value' '
+ git update-ref PSEUDOREF $C $B &&
+ test $C = $(git rev-parse PSEUDOREF)
+'
+
+test_expect_success 'do not overwrite pseudoref with wrong old value' '
+ test_must_fail git update-ref PSEUDOREF $D $E 2>err &&
+ test $C = $(git rev-parse PSEUDOREF) &&
+ test_i18ngrep "cannot lock ref.*expected" err
+'
+
+test_expect_success 'delete pseudoref' '
+ git update-ref -d PSEUDOREF &&
+ test_must_fail git rev-parse PSEUDOREF
+'
+
+test_expect_success 'do not delete pseudoref with wrong old value' '
+ git update-ref PSEUDOREF $A &&
+ test_must_fail git update-ref -d PSEUDOREF $B 2>err &&
+ test $A = $(git rev-parse PSEUDOREF) &&
+ test_i18ngrep "cannot lock ref.*expected" err
+'
+
+test_expect_success 'delete pseudoref with correct old value' '
+ git update-ref -d PSEUDOREF $A &&
+ test_must_fail git rev-parse PSEUDOREF
+'
+
+test_expect_success 'create pseudoref with old OID zero' '
+ git update-ref PSEUDOREF $A $Z &&
+ test $A = $(git rev-parse PSEUDOREF)
+'
+
+test_expect_success 'do not overwrite pseudoref with old OID zero' '
+ test_when_finished git update-ref -d PSEUDOREF &&
+ test_must_fail git update-ref PSEUDOREF $B $Z 2>err &&
+ test $A = $(git rev-parse PSEUDOREF) &&
+ test_i18ngrep "already exists" err
+'
+
+# Test --stdin
+
+a=refs/heads/a
+b=refs/heads/b
+c=refs/heads/c
+E='""'
+F='%s\0'
+pws='path with space'
+
+test_expect_success 'stdin test setup' '
+ echo "$pws" >"$pws" &&
+ git add -- "$pws" &&
+ git commit -m "$pws"
+'
+
+test_expect_success '-z fails without --stdin' '
+ test_must_fail git update-ref -z $m $m $m 2>err &&
+ test_i18ngrep "usage: git update-ref" err
+'
+
+test_expect_success 'stdin works with no input' '
+ >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse --verify -q $m
+'
+
+test_expect_success 'stdin fails on empty line' '
+ echo "" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: empty command in input" err
+'
+
+test_expect_success 'stdin fails on only whitespace' '
+ echo " " >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: whitespace before command: " err
+'
+
+test_expect_success 'stdin fails on leading whitespace' '
+ echo " create $a $m" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: whitespace before command: create $a $m" err
+'
+
+test_expect_success 'stdin fails on unknown command' '
+ echo "unknown $a" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: unknown command: unknown $a" err
+'
+
+test_expect_success 'stdin fails on unbalanced quotes' '
+ echo "create $a \"main" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: badly quoted argument: \\\"main" err
+'
+
+test_expect_success 'stdin fails on invalid escape' '
+ echo "create $a \"ma\zn\"" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: badly quoted argument: \\\"ma\\\\zn\\\"" err
+'
+
+test_expect_success 'stdin fails on junk after quoted argument' '
+ echo "create \"$a\"main" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: unexpected character after quoted argument: \\\"$a\\\"main" err
+'
+
+test_expect_success 'stdin fails create with no ref' '
+ echo "create " >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: create: missing <ref>" err
+'
+
+test_expect_success 'stdin fails create with no new value' '
+ echo "create $a" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: create $a: missing <newvalue>" err
+'
+
+test_expect_success 'stdin fails create with too many arguments' '
+ echo "create $a $m $m" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: create $a: extra input: $m" err
+'
+
+test_expect_success 'stdin fails update with no ref' '
+ echo "update " >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: update: missing <ref>" err
+'
+
+test_expect_success 'stdin fails update with no new value' '
+ echo "update $a" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: update $a: missing <newvalue>" err
+'
+
+test_expect_success 'stdin fails update with too many arguments' '
+ echo "update $a $m $m $m" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: update $a: extra input: $m" err
+'
+
+test_expect_success 'stdin fails delete with no ref' '
+ echo "delete " >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: delete: missing <ref>" err
+'
+
+test_expect_success 'stdin fails delete with too many arguments' '
+ echo "delete $a $m $m" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: delete $a: extra input: $m" err
+'
+
+test_expect_success 'stdin fails verify with too many arguments' '
+ echo "verify $a $m $m" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: verify $a: extra input: $m" err
+'
+
+test_expect_success 'stdin fails option with unknown name' '
+ echo "option unknown" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: option unknown: unknown" err
+'
+
+test_expect_success 'stdin fails with duplicate refs' '
+ cat >stdin <<-EOF &&
+ create $a $m
+ create $b $m
+ create $a $m
+ EOF
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ test_i18ngrep "fatal: multiple updates for ref '"'"'$a'"'"' not allowed" err
+'
+
+test_expect_success 'stdin create ref works' '
+ echo "create $a $m" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin does not create reflogs by default' '
+ test_when_finished "git update-ref -d $outside" &&
+ echo "create $outside $m" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $outside >actual &&
+ test_cmp expect actual &&
+ test_must_fail git reflog exists $outside
+'
+
+test_expect_success 'stdin creates reflogs with --create-reflog' '
+ test_when_finished "git update-ref -d $outside" &&
+ echo "create $outside $m" >stdin &&
+ git update-ref --create-reflog --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $outside >actual &&
+ test_cmp expect actual &&
+ git reflog exists $outside
+'
+
+test_expect_success 'stdin succeeds with quoted argument' '
+ git update-ref -d $a &&
+ echo "create $a \"$m\"" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin succeeds with escaped character' '
+ git update-ref -d $a &&
+ echo "create $a \"ma\\151n\"" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin update ref creates with zero old value' '
+ echo "update $b $m $Z" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ git update-ref -d $b
+'
+
+test_expect_success 'stdin update ref creates with empty old value' '
+ echo "update $b $m $E" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin create ref works with path with space to blob' '
+ echo "create refs/blobs/pws \"$m:$pws\"" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse "$m:$pws" >expect &&
+ git rev-parse refs/blobs/pws >actual &&
+ test_cmp expect actual &&
+ git update-ref -d refs/blobs/pws
+'
+
+test_expect_success 'stdin update ref fails with wrong old value' '
+ echo "update $c $m $m~1" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: cannot lock ref '"'"'$c'"'"'" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin update ref fails with bad old value' '
+ echo "update $c $m does-not-exist" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: update $c: invalid <oldvalue>: does-not-exist" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin create ref fails with bad new value' '
+ echo "create $c does-not-exist" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: create $c: invalid <newvalue>: does-not-exist" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin create ref fails with zero new value' '
+ echo "create $c " >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: create $c: zero <newvalue>" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin update ref works with right old value' '
+ echo "update $b $m~1 $m" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin delete ref fails with wrong old value' '
+ echo "delete $a $m~1" >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: cannot lock ref '"'"'$a'"'"'" err &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin delete ref fails with zero old value' '
+ echo "delete $a " >stdin &&
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: delete $a: zero <oldvalue>" err &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin update symref works option no-deref' '
+ git symbolic-ref TESTSYMREF $b &&
+ cat >stdin <<-EOF &&
+ option no-deref
+ update TESTSYMREF $a $b
+ EOF
+ git update-ref --stdin <stdin &&
+ git rev-parse TESTSYMREF >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin delete symref works option no-deref' '
+ git symbolic-ref TESTSYMREF $b &&
+ cat >stdin <<-EOF &&
+ option no-deref
+ delete TESTSYMREF $b
+ EOF
+ git update-ref --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q TESTSYMREF &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin update symref works flag --no-deref' '
+ git symbolic-ref TESTSYMREFONE $b &&
+ git symbolic-ref TESTSYMREFTWO $b &&
+ cat >stdin <<-EOF &&
+ update TESTSYMREFONE $a $b
+ update TESTSYMREFTWO $a $b
+ EOF
+ git update-ref --no-deref --stdin <stdin &&
+ git rev-parse TESTSYMREFONE TESTSYMREFTWO >expect &&
+ git rev-parse $a $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin delete symref works flag --no-deref' '
+ git symbolic-ref TESTSYMREFONE $b &&
+ git symbolic-ref TESTSYMREFTWO $b &&
+ cat >stdin <<-EOF &&
+ delete TESTSYMREFONE $b
+ delete TESTSYMREFTWO $b
+ EOF
+ git update-ref --no-deref --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q TESTSYMREFONE &&
+ test_must_fail git rev-parse --verify -q TESTSYMREFTWO &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin delete ref works with right old value' '
+ echo "delete $b $m~1" >stdin &&
+ git update-ref --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q $b
+'
+
+test_expect_success 'stdin update/create/verify combination works' '
+ cat >stdin <<-EOF &&
+ update $a $m
+ create $b $m
+ verify $c
+ EOF
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin verify succeeds for correct value' '
+ git rev-parse $m >expect &&
+ echo "verify $m $m" >stdin &&
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin verify succeeds for missing reference' '
+ echo "verify refs/heads/missing $Z" >stdin &&
+ git update-ref --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q refs/heads/missing
+'
+
+test_expect_success 'stdin verify treats no value as missing' '
+ echo "verify refs/heads/missing" >stdin &&
+ git update-ref --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q refs/heads/missing
+'
+
+test_expect_success 'stdin verify fails for wrong value' '
+ git rev-parse $m >expect &&
+ echo "verify $m $m~1" >stdin &&
+ test_must_fail git update-ref --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin verify fails for mistaken null value' '
+ git rev-parse $m >expect &&
+ echo "verify $m $Z" >stdin &&
+ test_must_fail git update-ref --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin verify fails for mistaken empty value' '
+ M=$(git rev-parse $m) &&
+ test_when_finished "git update-ref $m $M" &&
+ git rev-parse $m >expect &&
+ echo "verify $m" >stdin &&
+ test_must_fail git update-ref --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin update refs works with identity updates' '
+ cat >stdin <<-EOF &&
+ update $a $m $m
+ update $b $m $m
+ update $c $Z $E
+ EOF
+ git update-ref --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin update refs fails with wrong old value' '
+ git update-ref $c $m &&
+ cat >stdin <<-EOF &&
+ update $a $m $m
+ update $b $m $m
+ update $c ''
+ EOF
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ grep "fatal: cannot lock ref '"'"'$c'"'"'" err &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ git rev-parse $c >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin delete refs works with packed and loose refs' '
+ git pack-refs --all &&
+ git update-ref $c $m~1 &&
+ cat >stdin <<-EOF &&
+ delete $a $m
+ update $b $Z $m
+ update $c $E $m~1
+ EOF
+ git update-ref --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q $a &&
+ test_must_fail git rev-parse --verify -q $b &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin -z works on empty input' '
+ >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse --verify -q $m
+'
+
+test_expect_success 'stdin -z fails on empty line' '
+ echo "" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: whitespace before command: " err
+'
+
+test_expect_success 'stdin -z fails on empty command' '
+ printf $F "" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: empty command in input" err
+'
+
+test_expect_success 'stdin -z fails on only whitespace' '
+ printf $F " " >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: whitespace before command: " err
+'
+
+test_expect_success 'stdin -z fails on leading whitespace' '
+ printf $F " create $a" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: whitespace before command: create $a" err
+'
+
+test_expect_success 'stdin -z fails on unknown command' '
+ printf $F "unknown $a" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: unknown command: unknown $a" err
+'
+
+test_expect_success 'stdin -z fails create with no ref' '
+ printf $F "create " >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: create: missing <ref>" err
+'
+
+test_expect_success 'stdin -z fails create with no new value' '
+ printf $F "create $a" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: create $a: unexpected end of input when reading <newvalue>" err
+'
+
+test_expect_success 'stdin -z fails create with too many arguments' '
+ printf $F "create $a" "$m" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: unknown command: $m" err
+'
+
+test_expect_success 'stdin -z fails update with no ref' '
+ printf $F "update " >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: update: missing <ref>" err
+'
+
+test_expect_success 'stdin -z fails update with too few args' '
+ printf $F "update $a" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err
+'
+
+test_expect_success 'stdin -z emits warning with empty new value' '
+ git update-ref $a $m &&
+ printf $F "update $a" "" "" >stdin &&
+ git update-ref -z --stdin <stdin 2>err &&
+ grep "warning: update $a: missing <newvalue>, treating as zero" err &&
+ test_must_fail git rev-parse --verify -q $a
+'
+
+test_expect_success 'stdin -z fails update with no new value' '
+ printf $F "update $a" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: update $a: unexpected end of input when reading <newvalue>" err
+'
+
+test_expect_success 'stdin -z fails update with no old value' '
+ printf $F "update $a" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err
+'
+
+test_expect_success 'stdin -z fails update with too many arguments' '
+ printf $F "update $a" "$m" "$m" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: unknown command: $m" err
+'
+
+test_expect_success 'stdin -z fails delete with no ref' '
+ printf $F "delete " >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: delete: missing <ref>" err
+'
+
+test_expect_success 'stdin -z fails delete with no old value' '
+ printf $F "delete $a" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: delete $a: unexpected end of input when reading <oldvalue>" err
+'
+
+test_expect_success 'stdin -z fails delete with too many arguments' '
+ printf $F "delete $a" "$m" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: unknown command: $m" err
+'
+
+test_expect_success 'stdin -z fails verify with too many arguments' '
+ printf $F "verify $a" "$m" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: unknown command: $m" err
+'
+
+test_expect_success 'stdin -z fails verify with no old value' '
+ printf $F "verify $a" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: verify $a: unexpected end of input when reading <oldvalue>" err
+'
+
+test_expect_success 'stdin -z fails option with unknown name' '
+ printf $F "option unknown" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: option unknown: unknown" err
+'
+
+test_expect_success 'stdin -z fails with duplicate refs' '
+ printf $F "create $a" "$m" "create $b" "$m" "create $a" "$m" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ test_i18ngrep "fatal: multiple updates for ref '"'"'$a'"'"' not allowed" err
+'
+
+test_expect_success 'stdin -z create ref works' '
+ printf $F "create $a" "$m" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z update ref creates with zero old value' '
+ printf $F "update $b" "$m" "$Z" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ git update-ref -d $b
+'
+
+test_expect_success 'stdin -z update ref creates with empty old value' '
+ printf $F "update $b" "$m" "" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z create ref works with path with space to blob' '
+ printf $F "create refs/blobs/pws" "$m:$pws" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse "$m:$pws" >expect &&
+ git rev-parse refs/blobs/pws >actual &&
+ test_cmp expect actual &&
+ git update-ref -d refs/blobs/pws
+'
+
+test_expect_success 'stdin -z update ref fails with wrong old value' '
+ printf $F "update $c" "$m" "$m~1" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: cannot lock ref '"'"'$c'"'"'" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin -z update ref fails with bad old value' '
+ printf $F "update $c" "$m" "does-not-exist" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: update $c: invalid <oldvalue>: does-not-exist" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin -z create ref fails when ref exists' '
+ git update-ref $c $m &&
+ git rev-parse "$c" >expect &&
+ printf $F "create $c" "$m~1" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: cannot lock ref '"'"'$c'"'"'" err &&
+ git rev-parse "$c" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z create ref fails with bad new value' '
+ git update-ref -d "$c" &&
+ printf $F "create $c" "does-not-exist" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: create $c: invalid <newvalue>: does-not-exist" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin -z create ref fails with empty new value' '
+ printf $F "create $c" "" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: create $c: missing <newvalue>" err &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin -z update ref works with right old value' '
+ printf $F "update $b" "$m~1" "$m" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z delete ref fails with wrong old value' '
+ printf $F "delete $a" "$m~1" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: cannot lock ref '"'"'$a'"'"'" err &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z delete ref fails with zero old value' '
+ printf $F "delete $a" "$Z" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: delete $a: zero <oldvalue>" err &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z update symref works option no-deref' '
+ git symbolic-ref TESTSYMREF $b &&
+ printf $F "option no-deref" "update TESTSYMREF" "$a" "$b" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse TESTSYMREF >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z delete symref works option no-deref' '
+ git symbolic-ref TESTSYMREF $b &&
+ printf $F "option no-deref" "delete TESTSYMREF" "$b" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q TESTSYMREF &&
+ git rev-parse $m~1 >expect &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z delete ref works with right old value' '
+ printf $F "delete $b" "$m~1" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q $b
+'
+
+test_expect_success 'stdin -z update/create/verify combination works' '
+ printf $F "update $a" "$m" "" "create $b" "$m" "verify $c" "" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin -z verify succeeds for correct value' '
+ git rev-parse $m >expect &&
+ printf $F "verify $m" "$m" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z verify succeeds for missing reference' '
+ printf $F "verify refs/heads/missing" "$Z" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q refs/heads/missing
+'
+
+test_expect_success 'stdin -z verify treats no value as missing' '
+ printf $F "verify refs/heads/missing" "" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q refs/heads/missing
+'
+
+test_expect_success 'stdin -z verify fails for wrong value' '
+ git rev-parse $m >expect &&
+ printf $F "verify $m" "$m~1" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z verify fails for mistaken null value' '
+ git rev-parse $m >expect &&
+ printf $F "verify $m" "$Z" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z verify fails for mistaken empty value' '
+ M=$(git rev-parse $m) &&
+ test_when_finished "git update-ref $m $M" &&
+ git rev-parse $m >expect &&
+ printf $F "verify $m" "" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin &&
+ git rev-parse $m >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z update refs works with identity updates' '
+ printf $F "update $a" "$m" "$m" "update $b" "$m" "$m" "update $c" "$Z" "" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'stdin -z update refs fails with wrong old value' '
+ git update-ref $c $m &&
+ printf $F "update $a" "$m" "$m" "update $b" "$m" "$m" "update $c" "$m" "$Z" >stdin &&
+ test_must_fail git update-ref -z --stdin <stdin 2>err &&
+ grep "fatal: cannot lock ref '"'"'$c'"'"'" err &&
+ git rev-parse $m >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual &&
+ git rev-parse $b >actual &&
+ test_cmp expect actual &&
+ git rev-parse $c >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'stdin -z delete refs works with packed and loose refs' '
+ git pack-refs --all &&
+ git update-ref $c $m~1 &&
+ printf $F "delete $a" "$m" "update $b" "$Z" "$m" "update $c" "" "$m~1" >stdin &&
+ git update-ref -z --stdin <stdin &&
+ test_must_fail git rev-parse --verify -q $a &&
+ test_must_fail git rev-parse --verify -q $b &&
+ test_must_fail git rev-parse --verify -q $c
+'
+
+test_expect_success 'fails with duplicate HEAD update' '
+ git branch target1 $A &&
+ git checkout target1 &&
+ cat >stdin <<-EOF &&
+ update refs/heads/target1 $C
+ option no-deref
+ update HEAD $B
+ EOF
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ test_i18ngrep "fatal: multiple updates for '\''HEAD'\'' (including one via its referent .refs/heads/target1.) are not allowed" err &&
+ echo "refs/heads/target1" >expect &&
+ git symbolic-ref HEAD >actual &&
+ test_cmp expect actual &&
+ echo "$A" >expect &&
+ git rev-parse refs/heads/target1 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'fails with duplicate ref update via symref' '
+ git branch target2 $A &&
+ git symbolic-ref refs/heads/symref2 refs/heads/target2 &&
+ cat >stdin <<-EOF &&
+ update refs/heads/target2 $C
+ update refs/heads/symref2 $B
+ EOF
+ test_must_fail git update-ref --stdin <stdin 2>err &&
+ test_i18ngrep "fatal: multiple updates for '\''refs/heads/target2'\'' (including one via symref .refs/heads/symref2.) are not allowed" err &&
+ echo "refs/heads/target2" >expect &&
+ git symbolic-ref refs/heads/symref2 >actual &&
+ test_cmp expect actual &&
+ echo "$A" >expect &&
+ git rev-parse refs/heads/target2 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success ULIMIT_FILE_DESCRIPTORS 'large transaction creating branches does not burst open file limit' '
+(
+ for i in $(test_seq 33)
+ do
+ echo "create refs/heads/$i HEAD" || exit 1
+ done >large_input &&
+ run_with_limited_open_files git update-ref --stdin <large_input &&
+ git rev-parse --verify -q refs/heads/33
+)
+'
+
+test_expect_success ULIMIT_FILE_DESCRIPTORS 'large transaction deleting branches does not burst open file limit' '
+(
+ for i in $(test_seq 33)
+ do
+ echo "delete refs/heads/$i HEAD" || exit 1
+ done >large_input &&
+ run_with_limited_open_files git update-ref --stdin <large_input &&
+ test_must_fail git rev-parse --verify -q refs/heads/33
+)
+'
+
+test_expect_success 'handle per-worktree refs in refs/bisect' '
+ git commit --allow-empty -m "initial commit" &&
+ git worktree add -b branch worktree &&
+ (
+ cd worktree &&
+ git commit --allow-empty -m "test commit" &&
+ git for-each-ref >for-each-ref.out &&
+ ! grep refs/bisect for-each-ref.out &&
+ git update-ref refs/bisect/something HEAD &&
+ git rev-parse refs/bisect/something >../worktree-head &&
+ git for-each-ref | grep refs/bisect/something
+ ) &&
+ git show-ref >actual &&
+ ! grep 'refs/bisect' actual &&
+ test_must_fail git rev-parse refs/bisect/something &&
+ git update-ref refs/bisect/something HEAD &&
+ git rev-parse refs/bisect/something >main-head &&
+ ! test_cmp main-head worktree-head
+'
+
+test_expect_success 'transaction handles empty commit' '
+ cat >stdin <<-EOF &&
+ start
+ prepare
+ commit
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start prepare commit >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction handles empty commit with missing prepare' '
+ cat >stdin <<-EOF &&
+ start
+ commit
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start commit >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction handles sole commit' '
+ cat >stdin <<-EOF &&
+ commit
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" commit >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction handles empty abort' '
+ cat >stdin <<-EOF &&
+ start
+ prepare
+ abort
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start prepare abort >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction exits on multiple aborts' '
+ cat >stdin <<-EOF &&
+ abort
+ abort
+ EOF
+ test_must_fail git update-ref --stdin <stdin >actual 2>err &&
+ printf "%s: ok\n" abort >expect &&
+ test_cmp expect actual &&
+ grep "fatal: transaction is closed" err
+'
+
+test_expect_success 'transaction exits on start after prepare' '
+ cat >stdin <<-EOF &&
+ prepare
+ start
+ EOF
+ test_must_fail git update-ref --stdin <stdin 2>err >actual &&
+ printf "%s: ok\n" prepare >expect &&
+ test_cmp expect actual &&
+ grep "fatal: prepared transactions can only be closed" err
+'
+
+test_expect_success 'transaction handles empty abort with missing prepare' '
+ cat >stdin <<-EOF &&
+ start
+ abort
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start abort >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction handles sole abort' '
+ cat >stdin <<-EOF &&
+ abort
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" abort >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction can handle commit' '
+ cat >stdin <<-EOF &&
+ start
+ create $a HEAD
+ commit
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start commit >expect &&
+ test_cmp expect actual &&
+ git rev-parse HEAD >expect &&
+ git rev-parse $a >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction can handle abort' '
+ cat >stdin <<-EOF &&
+ start
+ create $b HEAD
+ abort
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start abort >expect &&
+ test_cmp expect actual &&
+ test_must_fail git show-ref --verify -q $b
+'
+
+test_expect_success 'transaction aborts by default' '
+ cat >stdin <<-EOF &&
+ start
+ create $b HEAD
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start >expect &&
+ test_cmp expect actual &&
+ test_must_fail git show-ref --verify -q $b
+'
+
+test_expect_success 'transaction with prepare aborts by default' '
+ cat >stdin <<-EOF &&
+ start
+ create $b HEAD
+ prepare
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start prepare >expect &&
+ test_cmp expect actual &&
+ test_must_fail git show-ref --verify -q $b
+'
+
+test_expect_success 'transaction can commit multiple times' '
+ cat >stdin <<-EOF &&
+ start
+ create refs/heads/branch-1 $A
+ commit
+ start
+ create refs/heads/branch-2 $B
+ commit
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start commit start commit >expect &&
+ test_cmp expect actual &&
+ echo "$A" >expect &&
+ git rev-parse refs/heads/branch-1 >actual &&
+ test_cmp expect actual &&
+ echo "$B" >expect &&
+ git rev-parse refs/heads/branch-2 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction can create and delete' '
+ cat >stdin <<-EOF &&
+ start
+ create refs/heads/create-and-delete $A
+ commit
+ start
+ delete refs/heads/create-and-delete $A
+ commit
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start commit start commit >expect &&
+ test_must_fail git show-ref --verify refs/heads/create-and-delete
+'
+
+test_expect_success 'transaction can commit after abort' '
+ cat >stdin <<-EOF &&
+ start
+ create refs/heads/abort $A
+ abort
+ start
+ create refs/heads/abort $A
+ commit
+ EOF
+ git update-ref --stdin <stdin >actual &&
+ printf "%s: ok\n" start abort start commit >expect &&
+ echo "$A" >expect &&
+ git rev-parse refs/heads/abort >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'transaction cannot restart ongoing transaction' '
+ cat >stdin <<-EOF &&
+ start
+ create refs/heads/restart $A
+ start
+ commit
+ EOF
+ test_must_fail git update-ref --stdin <stdin >actual &&
+ test_must_fail git show-ref --verify refs/heads/restart
+'
+
+test_expect_success PIPE 'transaction flushes status updates' '
+ mkfifo in out &&
+ (git update-ref --stdin <in >out &) &&
+
+ exec 9>in &&
+ exec 8<out &&
+ test_when_finished "exec 9>&-" &&
+ test_when_finished "exec 8<&-" &&
+
+ echo "start" >&9 &&
+ echo "start: ok" >expected &&
+ read line <&8 &&
+ echo "$line" >actual &&
+ test_cmp expected actual &&
+
+ echo "create refs/heads/flush $A" >&9 &&
+
+ echo prepare >&9 &&
+ echo "prepare: ok" >expected &&
+ read line <&8 &&
+ echo "$line" >actual &&
+ test_cmp expected actual &&
+
+ # This must now fail given that we have locked the ref.
+ test_must_fail git update-ref refs/heads/flush $B 2>stderr &&
+ grep "fatal: update_ref failed for ref ${SQ}refs/heads/flush${SQ}: cannot lock ref" stderr &&
+
+ echo commit >&9 &&
+ echo "commit: ok" >expected &&
+ read line <&8 &&
+ echo "$line" >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'directory not created deleting packed ref' '
+ git branch d1/d2/r1 HEAD &&
+ git pack-refs --all &&
+ test_path_is_missing .git/refs/heads/d1/d2 &&
+ git update-ref -d refs/heads/d1/d2/r1 &&
+ test_path_is_missing .git/refs/heads/d1/d2 &&
+ test_path_is_missing .git/refs/heads/d1
+'
+
+test_done