[thirdparty/git.git] / t / t1400-update-ref.sh

#!/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
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 due to file/directory conflict" '
        test_when_finished "git update-ref -d refs/heads/gu" &&
        git update-ref refs/heads/gu $A &&
        test_must_fail git update-ref refs/heads/gu/fixes $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 $m &&
        test-tool ref-store main for-each-reflog-ent HEAD >actual &&
        grep "delete-$m$" actual
'

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 $m &&
        test-tool ref-store main for-each-reflog-ent HEAD >actual &&
        grep "delete-by-head$" actual
'

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 && \
                test-tool ref-store main delete-reflog $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' '
        test_when_finished "test-tool ref-store main delete-refs REF_NO_DEREF refs/heads/self" &&
        git symbolic-ref refs/heads/self refs/heads/self &&
        git symbolic-ref --no-recurse refs/heads/self &&
        test_must_fail git update-ref -d refs/heads/self &&
        git symbolic-ref --no-recurse refs/heads/self
'

test_expect_success 'update-ref --no-deref -d can delete self-reference' '
        test_when_finished "test-tool ref-store main delete-refs REF_NO_DEREF refs/heads/self" &&
        git symbolic-ref refs/heads/self refs/heads/self &&
        git symbolic-ref --no-recurse 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 REFFILES '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" &&
        git symbolic-ref --no-recurse 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)
'

test_expect_success "clean up reflog" '
        test-tool ref-store main delete-reflog $m
'

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)
'

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 && git reflog expire --expire=all --all && rm -rf 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 && git reflog expire --expire=all --all && rm -rf 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 -d $m &&
        test-tool ref-store main delete-reflog $m &&

        GIT_COMMITTER_DATE="1117150320 -0500" git update-ref $m $C &&
        GIT_COMMITTER_DATE="1117150350 -0500" git update-ref $m $A &&
        GIT_COMMITTER_DATE="1117150380 -0500" git update-ref $m $B &&
        GIT_COMMITTER_DATE="1117150680 -0500" git update-ref $m $F &&
        GIT_COMMITTER_DATE="1117150980 -0500" git update-ref $m $E &&
        git update-ref $m $D &&
        # Delete the last reflog entry so that the tip of m and the reflog for
        # it disagree.
        git reflog delete $m@{0} &&

        cat >expect <<-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
        $B $F $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150680 -0500
        $F $E $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150980 -0500
        EOF
        test-tool ref-store main for-each-reflog-ent $m >actual &&
        test_cmp expect actual
'

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_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 "$F" >expect &&
        test_cmp expect o &&
        test_must_be_empty e
'
test_expect_success 'Query "main@{2005-05-26 23:43:00}" (exact end of history)' '
        test_when_finished "rm -f o e" &&
        git rev-parse --verify "main@{2005-05-26 23:43:00}" >o 2>e &&
        echo "$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_grep -F "warning: log for ref $m unexpectedly ended on $ld" e
'

rm -f expect
git update-ref -d $m

test_expect_success 'query reflog with gap' '
        test_when_finished "git update-ref -d $m" &&

        GIT_COMMITTER_DATE="1117150320 -0500" git update-ref $m $A &&
        GIT_COMMITTER_DATE="1117150380 -0500" git update-ref $m $B &&
        GIT_COMMITTER_DATE="1117150480 -0500" git update-ref $m $C &&
        GIT_COMMITTER_DATE="1117150580 -0500" git update-ref $m $D &&
        GIT_COMMITTER_DATE="1117150680 -0500" git update-ref $m $F &&
        git reflog delete $m@{2} &&

        git rev-parse --verify "main@{2005-05-26 23:33:01}" >actual 2>stderr &&
        echo "$B" >expect &&
        test_cmp expect actual &&
        test_grep -F "warning: log for ref $m has gap after $gd" stderr
'

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_grep "unable to resolve reference" err
'

test_expect_success 'create pseudoref' '
        git update-ref PSEUDOREF $A &&
        test $A = $(git show-ref -s --verify PSEUDOREF)
'

test_expect_success 'overwrite pseudoref with no old value given' '
        git update-ref PSEUDOREF $B &&
        test $B = $(git show-ref -s --verify PSEUDOREF)
'

test_expect_success 'overwrite pseudoref with correct old value' '
        git update-ref PSEUDOREF $C $B &&
        test $C = $(git show-ref -s --verify 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 show-ref -s --verify PSEUDOREF) &&
        test_grep "cannot lock ref.*expected" err
'

test_expect_success 'delete pseudoref' '
        git update-ref -d PSEUDOREF &&
        test_must_fail git show-ref -s --verify 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 show-ref -s --verify PSEUDOREF) &&
        test_grep "cannot lock ref.*expected" err
'

test_expect_success 'delete pseudoref with correct old value' '
        git update-ref -d PSEUDOREF $A &&
        test_must_fail git show-ref -s --verify PSEUDOREF
'

test_expect_success 'create pseudoref with old OID zero' '
        git update-ref PSEUDOREF $A $Z &&
        test $A = $(git show-ref -s --verify 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 show-ref -s --verify PSEUDOREF) &&
        test_grep "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_grep "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 <new-oid>" 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 <new-oid>" 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 $m
        EOF
        test_must_fail git update-ref --stdin <stdin 2>err &&
        test_grep "fatal: multiple updates for ref '"'"'$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 <old-oid>: 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 <new-oid>: 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 <new-oid>" 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 <old-oid>" 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' '
        test-tool ref-store main for-each-reflog-ent $m >before &&
        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-tool ref-store main for-each-reflog-ent $m >after &&
        test_cmp before after
'

test_expect_success 'stdin verify succeeds for missing reference' '
        test-tool ref-store main for-each-reflog-ent $m >before &&
        echo "verify refs/heads/missing $Z" >stdin &&
        git update-ref --stdin <stdin &&
        test_must_fail git rev-parse --verify -q refs/heads/missing &&
        test-tool ref-store main for-each-reflog-ent $m >after &&
        test_cmp before after
'

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 <new-oid>" 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 <old-oid>" 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 <new-oid>, 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 <new-oid>" 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 <old-oid>" 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 <old-oid>" 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 <old-oid>" 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_grep "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 <old-oid>: 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 <new-oid>: 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 <new-oid>" 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 <old-oid>" 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 $B
        EOF
        test_must_fail git update-ref --stdin <stdin 2>err &&
        test_grep "fatal: multiple updates for '\''HEAD'\'' (including one via its referent .refs/heads/target1.) are not allowed" err &&
        echo "refs/heads/target1" >expect &&
        git symbolic-ref HEAD >actual &&
        test_cmp expect actual &&
        echo "$A" >expect &&
        git rev-parse refs/heads/target1 >actual &&
        test_cmp expect actual
'

test_expect_success 'fails with duplicate ref update via symref' '
        test_when_finished "git symbolic-ref -d refs/heads/symref2" &&
        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 $B
        EOF
        test_must_fail git update-ref --stdin <stdin 2>err &&
        test_grep "fatal: multiple updates for '\''refs/heads/target2'\'' (including one via symref .refs/heads/symref2.) are not allowed" err &&
        echo "refs/heads/target2" >expect &&
        git symbolic-ref refs/heads/symref2 >actual &&
        test_cmp expect actual &&
        echo "$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' '
(
        test_seq -f "create refs/heads/%d HEAD" 33 >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' '
(
        test_seq -f "delete refs/heads/%d HEAD" 33 >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_cmp expect actual &&
        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 &&
        printf "%s: ok\n" start >expect &&
        test_cmp expect 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
'

format_command () {
        if test "$1" = "-z"
        then
                shift
                printf "$F" "$@"
        else
                echo "$@"
        fi
}

for type in "" "-z"
do

        test_expect_success "stdin $type symref-verify fails without --no-deref" '
                git symbolic-ref refs/heads/symref $a &&
                format_command $type "symref-verify refs/heads/symref" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type <stdin 2>err &&
                grep "fatal: symref-verify: cannot operate with deref mode" err
        '

        test_expect_success "stdin $type symref-verify fails with too many arguments" '
                format_command $type "symref-verify refs/heads/symref" "$a" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err  &&
                if test "$type" = "-z"
                then
                        grep "fatal: unknown command: $a" err
                else
                        grep "fatal: symref-verify refs/heads/symref: extra input:  $a" err
                fi
        '

        test_expect_success "stdin $type symref-verify succeeds for correct value" '
                git symbolic-ref refs/heads/symref >expect &&
                test-tool ref-store main for-each-reflog-ent refs/heads/symref >before &&
                format_command $type "symref-verify refs/heads/symref" "$a" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual &&
                test-tool ref-store main for-each-reflog-ent refs/heads/symref >after &&
                test_cmp before after
        '

        test_expect_success "stdin $type symref-verify fails with no value" '
                git symbolic-ref refs/heads/symref >expect &&
                format_command $type "symref-verify refs/heads/symref" "" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin
        '

        test_expect_success "stdin $type symref-verify succeeds for dangling reference" '
                test_when_finished "git symbolic-ref -d refs/heads/symref2" &&
                test_must_fail git symbolic-ref refs/heads/nonexistent &&
                git symbolic-ref refs/heads/symref2 refs/heads/nonexistent &&
                format_command $type "symref-verify refs/heads/symref2" "refs/heads/nonexistent" >stdin &&
                git update-ref --stdin $type --no-deref <stdin
        '

        test_expect_success "stdin $type symref-verify fails for missing reference" '
                test-tool ref-store main for-each-reflog-ent refs/heads/symref >before &&
                format_command $type "symref-verify refs/heads/missing" "refs/heads/unknown" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                grep "fatal: cannot lock ref ${SQ}refs/heads/missing${SQ}: unable to resolve reference ${SQ}refs/heads/missing${SQ}" err &&
                test_must_fail git rev-parse --verify -q refs/heads/missing &&
                test-tool ref-store main for-each-reflog-ent refs/heads/symref >after &&
                test_cmp before after
        '

        test_expect_success "stdin $type symref-verify fails for wrong value" '
                git symbolic-ref refs/heads/symref >expect &&
                format_command $type "symref-verify refs/heads/symref" "$b" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-verify fails for mistaken null value" '
                git symbolic-ref refs/heads/symref >expect &&
                format_command $type "symref-verify refs/heads/symref" "$Z" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-delete fails without --no-deref" '
                git symbolic-ref refs/heads/symref $a &&
                format_command $type "symref-delete refs/heads/symref" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type <stdin 2>err &&
                grep "fatal: symref-delete: cannot operate with deref mode" err
        '

        test_expect_success "stdin $type symref-delete fails with no ref" '
                format_command $type "symref-delete " >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                grep "fatal: symref-delete: missing <ref>" err
        '

        test_expect_success "stdin $type symref-delete fails deleting regular ref" '
                test_when_finished "git update-ref -d refs/heads/regularref" &&
                git update-ref refs/heads/regularref $a &&
                format_command $type "symref-delete refs/heads/regularref" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                grep "fatal: cannot lock ref ${SQ}refs/heads/regularref${SQ}: expected symref with target ${SQ}$a${SQ}: but is a regular ref" err
        '

        test_expect_success "stdin $type symref-delete fails with too many arguments" '
                format_command $type "symref-delete refs/heads/symref" "$a" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                if test "$type" = "-z"
                then
                        grep "fatal: unknown command: $a" err
                else
                        grep "fatal: symref-delete refs/heads/symref: extra input:  $a" err
                fi
        '

        test_expect_success "stdin $type symref-delete fails with wrong old value" '
                format_command $type "symref-delete refs/heads/symref" "$m" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                grep "fatal: verifying symref target: ${SQ}refs/heads/symref${SQ}: is at $a but expected refs/heads/main" err &&
                git symbolic-ref refs/heads/symref >expect &&
                echo $a >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-delete works with right old value" '
                format_command $type "symref-delete refs/heads/symref" "$a" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                test_must_fail git rev-parse --verify -q refs/heads/symref
        '

        test_expect_success "stdin $type symref-delete works with empty old value" '
                git symbolic-ref refs/heads/symref $a >stdin &&
                format_command $type "symref-delete refs/heads/symref" "" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                test_must_fail git rev-parse --verify -q $b
        '

        test_expect_success "stdin $type symref-delete succeeds for dangling reference" '
                test_must_fail git symbolic-ref refs/heads/nonexistent &&
                git symbolic-ref refs/heads/symref2 refs/heads/nonexistent &&
                format_command $type "symref-delete refs/heads/symref2" "refs/heads/nonexistent" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                test_must_fail git symbolic-ref -d refs/heads/symref2
        '

        test_expect_success "stdin $type symref-delete deletes regular ref without target" '
                git update-ref refs/heads/regularref $a &&
                format_command $type "symref-delete refs/heads/regularref" >stdin &&
                git update-ref --stdin $type --no-deref <stdin
        '

        test_expect_success "stdin $type symref-create fails with too many arguments" '
                format_command $type "symref-create refs/heads/symref" "$a" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                if test "$type" = "-z"
                then
                        grep "fatal: unknown command: $a" err
                else
                        grep "fatal: symref-create refs/heads/symref: extra input:  $a" err
                fi
        '

        test_expect_success "stdin $type symref-create fails with no target" '
                format_command $type "symref-create refs/heads/symref" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin
        '

        test_expect_success "stdin $type symref-create fails with empty target" '
                format_command $type "symref-create refs/heads/symref" "" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin
        '

        test_expect_success "stdin $type symref-create works" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                format_command $type "symref-create refs/heads/symref" "$a" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                git symbolic-ref refs/heads/symref >expect &&
                echo $a >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-create works with --no-deref" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                format_command $type "symref-create refs/heads/symref" "$a" &&
                git update-ref --stdin $type <stdin 2>err
        '

        test_expect_success "stdin $type create dangling symref ref works" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                format_command $type "symref-create refs/heads/symref" "refs/heads/unknown" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                git symbolic-ref refs/heads/symref >expect &&
                echo refs/heads/unknown >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-create does not create reflogs by default" '
                test_when_finished "git symbolic-ref -d refs/symref" &&
                format_command $type "symref-create refs/symref" "$a" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                git symbolic-ref refs/symref >expect &&
                echo $a >actual &&
                test_cmp expect actual &&
                test_must_fail git reflog exists refs/symref
        '

        test_expect_success "stdin $type symref-create reflogs with --create-reflog" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                format_command $type "symref-create refs/heads/symref" "$a" >stdin &&
                git update-ref --create-reflog --stdin $type --no-deref <stdin &&
                git symbolic-ref refs/heads/symref >expect &&
                echo $a >actual &&
                test_cmp expect actual &&
                git reflog exists refs/heads/symref
        '

        test_expect_success "stdin $type symref-update fails with too many arguments" '
                format_command $type "symref-update refs/heads/symref" "$a" "ref" "$a" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                if test "$type" = "-z"
                then
                        grep "fatal: unknown command: $a" err
                else
                        grep "fatal: symref-update refs/heads/symref: extra input:  $a" err
                fi
        '

        test_expect_success "stdin $type symref-update fails with wrong old value argument" '
                format_command $type "symref-update refs/heads/symref" "$a" "foo" "$a" "$a" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                grep "fatal: symref-update refs/heads/symref: invalid arg ${SQ}foo${SQ} for old value" err
        '

        test_expect_success "stdin $type symref-update creates with zero old value" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                format_command $type "symref-update refs/heads/symref" "$a" "oid" "$Z" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                echo $a >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update creates with no old value" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                echo $a >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update creates dangling" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                test_must_fail git rev-parse refs/heads/nonexistent &&
                format_command $type "symref-update refs/heads/symref" "refs/heads/nonexistent" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                echo refs/heads/nonexistent >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update fails with wrong old value" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                git symbolic-ref refs/heads/symref $a &&
                format_command $type "symref-update refs/heads/symref" "$m" "ref" "$b" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
                grep "fatal: verifying symref target: ${SQ}refs/heads/symref${SQ}: is at $a but expected $b" err &&
                test_must_fail git rev-parse --verify -q $c
        '

        test_expect_success "stdin $type symref-update updates dangling ref" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                test_must_fail git rev-parse refs/heads/nonexistent &&
                git symbolic-ref refs/heads/symref refs/heads/nonexistent &&
                format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                echo $a >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update updates dangling ref with old value" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                test_must_fail git rev-parse refs/heads/nonexistent &&
                git symbolic-ref refs/heads/symref refs/heads/nonexistent &&
                format_command $type "symref-update refs/heads/symref" "$a" "ref" "refs/heads/nonexistent" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                echo $a >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update fails update dangling ref with wrong old value" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                test_must_fail git rev-parse refs/heads/nonexistent &&
                git symbolic-ref refs/heads/symref refs/heads/nonexistent &&
                format_command $type "symref-update refs/heads/symref" "$a" "ref" "refs/heads/wrongref" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin &&
                echo refs/heads/nonexistent >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update works with right old value" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                git symbolic-ref refs/heads/symref $a &&
                format_command $type "symref-update refs/heads/symref" "$m" "ref" "$a" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                echo $m >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update works with no old value" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                git symbolic-ref refs/heads/symref $a &&
                format_command $type "symref-update refs/heads/symref" "$m" >stdin &&
                git update-ref --stdin $type --no-deref <stdin &&
                echo $m >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update fails with empty old ref-target" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                git symbolic-ref refs/heads/symref $a &&
                format_command $type "symref-update refs/heads/symref" "$m" "ref" "" >stdin &&
                test_must_fail git update-ref --stdin $type --no-deref <stdin &&
                echo $a >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update creates (with deref)" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
                git update-ref --stdin $type <stdin &&
                echo $a >expect &&
                git symbolic-ref --no-recurse refs/heads/symref >actual &&
                test_cmp expect actual &&
                test-tool ref-store main for-each-reflog-ent refs/heads/symref >actual &&
                grep "$Z $(git rev-parse $a)" actual
        '

        test_expect_success "stdin $type symref-update regular ref to symref with correct old-oid" '
                test_when_finished "git symbolic-ref -d --no-recurse refs/heads/regularref" &&
                git update-ref --no-deref refs/heads/regularref $a &&
                format_command $type "symref-update refs/heads/regularref" "$a" "oid" "$(git rev-parse $a)" >stdin &&
                git update-ref --stdin $type <stdin &&
                echo $a >expect &&
                git symbolic-ref --no-recurse refs/heads/regularref >actual &&
                test_cmp expect actual &&
                test-tool ref-store main for-each-reflog-ent refs/heads/regularref >actual &&
                grep "$(git rev-parse $a) $(git rev-parse $a)" actual
        '

        test_expect_success "stdin $type symref-update regular ref to symref fails with wrong old-oid" '
                test_when_finished "git update-ref -d refs/heads/regularref" &&
                git update-ref --no-deref refs/heads/regularref $a &&
                format_command $type "symref-update refs/heads/regularref" "$a" "oid" "$(git rev-parse refs/heads/target2)" >stdin &&
                test_must_fail git update-ref --stdin $type <stdin 2>err &&
                grep "fatal: cannot lock ref ${SQ}refs/heads/regularref${SQ}: is at $(git rev-parse $a) but expected $(git rev-parse refs/heads/target2)" err &&
                echo $(git rev-parse $a) >expect &&
                git rev-parse refs/heads/regularref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update regular ref to symref fails with invalid old-oid" '
                test_when_finished "git update-ref -d refs/heads/regularref" &&
                git update-ref --no-deref refs/heads/regularref $a &&
                format_command $type "symref-update refs/heads/regularref" "$a" "oid" "not-a-ref-oid" >stdin &&
                test_must_fail git update-ref --stdin $type <stdin 2>err &&
                grep "fatal: symref-update refs/heads/regularref: invalid oid: not-a-ref-oid" err &&
                echo $(git rev-parse $a) >expect &&
                git rev-parse refs/heads/regularref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update existing symref with zero old-oid" '
                test_when_finished "git symbolic-ref -d --no-recurse refs/heads/symref" &&
                git symbolic-ref refs/heads/symref refs/heads/target2 &&
                format_command $type "symref-update refs/heads/symref" "$a" "oid" "$Z" >stdin &&
                test_must_fail git update-ref --stdin $type <stdin 2>err &&
                grep "fatal: cannot lock ref ${SQ}refs/heads/symref${SQ}: reference already exists" err &&
                echo refs/heads/target2 >expect &&
                git symbolic-ref refs/heads/symref >actual &&
                test_cmp expect actual
        '

        test_expect_success "stdin $type symref-update regular ref to symref (with deref)" '
                test_when_finished "git symbolic-ref -d refs/heads/symref" &&
                test_when_finished "git update-ref -d --no-deref refs/heads/symref2" &&
                git update-ref refs/heads/symref2 $a &&
                git symbolic-ref --no-recurse refs/heads/symref refs/heads/symref2 &&
                format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
                git update-ref $type --stdin <stdin &&
                echo $a >expect &&
                git symbolic-ref --no-recurse refs/heads/symref2 >actual &&
                test_cmp expect actual &&
                echo refs/heads/symref2 >expect &&
                git symbolic-ref --no-recurse refs/heads/symref >actual &&
                test_cmp expect actual &&
                test-tool ref-store main for-each-reflog-ent refs/heads/symref >actual &&
                grep "$(git rev-parse $a) $(git rev-parse $a)" actual
        '

        test_expect_success "stdin $type symref-update regular ref to symref" '
                test_when_finished "git symbolic-ref -d --no-recurse refs/heads/regularref" &&
                git update-ref --no-deref refs/heads/regularref $a &&
                format_command $type "symref-update refs/heads/regularref" "$a" >stdin &&
                git update-ref $type --stdin <stdin &&
                echo $a >expect &&
                git symbolic-ref --no-recurse refs/heads/regularref >actual &&
                test_cmp expect actual &&
                test-tool ref-store main for-each-reflog-ent refs/heads/regularref >actual &&
                grep "$(git rev-parse $a) $(git rev-parse $a)" actual
        '

        test_expect_success "stdin $type batch-updates" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit commit &&
                        head=$(git rev-parse HEAD) &&

                        format_command $type "update refs/heads/ref1" "$head" "$Z" >stdin &&
                        format_command $type "update refs/heads/ref2" "$head" "$Z" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin &&
                        echo $head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        git rev-parse refs/heads/ref2 >actual &&
                        test_cmp expect actual
                )
        '

        test_expect_success "stdin $type batch-updates with invalid new_oid" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref1 $head &&
                        git update-ref refs/heads/ref2 $head &&

                        format_command $type "update refs/heads/ref1" "$old_head" "$head" >stdin &&
                        format_command $type "update refs/heads/ref2" "$(test_oid 001)" "$head" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        echo $head >expect &&
                        git rev-parse refs/heads/ref2 >actual &&
                        test_cmp expect actual &&
                        test_grep -q "invalid new value provided" stdout
                )
        '

        test_expect_success "stdin $type batch-updates with non-commit new_oid" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        head_tree=$(git rev-parse HEAD^{tree}) &&
                        git update-ref refs/heads/ref1 $head &&
                        git update-ref refs/heads/ref2 $head &&

                        format_command $type "update refs/heads/ref1" "$old_head" "$head" >stdin &&
                        format_command $type "update refs/heads/ref2" "$head_tree" "$head" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        echo $head >expect &&
                        git rev-parse refs/heads/ref2 >actual &&
                        test_cmp expect actual &&
                        test_grep -q "invalid new value provided" stdout
                )
        '

        test_expect_success "stdin $type batch-updates with non-existent ref" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref1 $head &&

                        format_command $type "update refs/heads/ref1" "$old_head" "$head" >stdin &&
                        format_command $type "update refs/heads/ref2" "$old_head" "$head" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        test_must_fail git rev-parse refs/heads/ref2 &&
                        test_grep -q "reference does not exist" stdout
                )
        '

        test_expect_success "stdin $type batch-updates with dangling symref" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref1 $head &&
                        git symbolic-ref refs/heads/ref2 refs/heads/nonexistent &&

                        format_command $type "update refs/heads/ref1" "$old_head" "$head" >stdin &&
                        format_command $type "update refs/heads/ref2" "$old_head" "$head" >>stdin &&
                        git update-ref $type --no-deref --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        echo $head >expect &&
                        test_must_fail git rev-parse refs/heads/ref2 &&
                        test_grep -q "reference does not exist" stdout
                )
        '

        test_expect_success "stdin $type batch-updates with regular ref as symref" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref1 $head &&
                        git update-ref refs/heads/ref2 $head &&

                        format_command $type "update refs/heads/ref1" "$old_head" "$head" >stdin &&
                        format_command $type "symref-update refs/heads/ref2" "$old_head" "ref" "refs/heads/nonexistent" >>stdin &&
                        git update-ref $type --no-deref --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        echo $head >expect &&
                        echo $head >expect &&
                        git rev-parse refs/heads/ref2 >actual &&
                        test_cmp expect actual &&
                        test_grep -q "expected symref but found regular ref" stdout
                )
        '

        test_expect_success "stdin $type batch-updates with invalid old_oid" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref1 $head &&
                        git update-ref refs/heads/ref2 $head &&

                        format_command $type "update refs/heads/ref1" "$old_head" "$head" >stdin &&
                        format_command $type "update refs/heads/ref2" "$old_head" "$Z" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        echo $head >expect &&
                        git rev-parse refs/heads/ref2 >actual &&
                        test_cmp expect actual &&
                        test_grep -q "reference already exists" stdout
                )
        '

        test_expect_success "stdin $type batch-updates with incorrect old oid" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref1 $head &&
                        git update-ref refs/heads/ref2 $head &&

                        format_command $type "update refs/heads/ref1" "$old_head" "$head" >stdin &&
                        format_command $type "update refs/heads/ref2" "$head" "$old_head" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref1 >actual &&
                        test_cmp expect actual &&
                        echo $head >expect &&
                        git rev-parse refs/heads/ref2 >actual &&
                        test_cmp expect actual &&
                        test_grep -q "incorrect old value provided" stdout
                )
        '

        test_expect_success "stdin $type batch-updates refname conflict" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref/foo $head &&

                        format_command $type "update refs/heads/ref/foo" "$old_head" "$head" >stdin &&
                        format_command $type "update refs/heads/ref" "$old_head" "" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/ref/foo >actual &&
                        test_cmp expect actual &&
                        test_grep -q "refname conflict" stdout
                )
        '

        test_expect_success "stdin $type batch-updates refname conflict new ref" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit one &&
                        old_head=$(git rev-parse HEAD) &&
                        test_commit two &&
                        head=$(git rev-parse HEAD) &&
                        git update-ref refs/heads/ref/foo $head &&

                        format_command $type "update refs/heads/foo" "$old_head" "" >stdin &&
                        format_command $type "update refs/heads/ref" "$old_head" "" >>stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        echo $old_head >expect &&
                        git rev-parse refs/heads/foo >actual &&
                        test_cmp expect actual &&
                        test_grep -q "refname conflict" stdout
                )
        '

        test_expect_success "stdin $type batch-updates delete incorrect symbolic ref" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit c1 &&
                        head=$(git rev-parse HEAD) &&
                        git symbolic-ref refs/heads/symbolic refs/heads/non-existent &&

                        format_command $type "delete refs/heads/symbolic" "$head" >stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        test_grep "reference does not exist" stdout
                )
        '

        test_expect_success "stdin $type batch-updates delete with incorrect old_oid" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit c1 &&
                        git branch new-branch &&
                        test_commit c2 &&
                        head=$(git rev-parse HEAD) &&

                        format_command $type "delete refs/heads/new-branch" "$head" >stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        test_grep "incorrect old value provided" stdout
                )
        '

        test_expect_success "stdin $type batch-updates delete non-existent ref" '
                git init repo &&
                test_when_finished "rm -fr repo" &&
                (
                        cd repo &&
                        test_commit commit &&
                        head=$(git rev-parse HEAD) &&

                        format_command $type "delete refs/heads/non-existent" "$head" >stdin &&
                        git update-ref $type --stdin --batch-updates <stdin >stdout &&
                        test_grep "reference does not exist" stdout
                )
        '
done

test_expect_success 'update-ref should also create reflog for HEAD' '
        test_commit to-rewind &&
        git rev-parse HEAD >expect &&
        head=$(git symbolic-ref HEAD) &&
        git update-ref --create-reflog "$head" HEAD~ &&
        git rev-parse HEAD@{1} >actual &&
        test_cmp expect actual
'

test_expect_success REFFILES 'empty directories are pruned when aborting a transaction' '
        test_path_is_missing .git/refs/heads/nested &&
        git update-ref --stdin <<-EOF &&
        create refs/heads/nested/something HEAD
        prepare
        abort
        EOF
        test_path_is_missing .git/refs/heads/nested
'

test_expect_success REFFILES 'empty directories are pruned when not committing' '
        test_path_is_missing .git/refs/heads/nested &&
        git update-ref --stdin <<-EOF &&
        create refs/heads/nested/something HEAD
        prepare
        EOF
        test_path_is_missing .git/refs/heads/nested
'

test_done