git/t/t1404-update-ref-errors.sh
Jeff King f6b75726b2 t: convert some here-doc test bodies
The t1404 script checks a lot of output from Git which contains single
quotes. Because the test snippets are themselves wrapped in the same
single-quotes, we have to resort to using $SQ to match them.  This is
error-prone and makes the tests harder to read.

Instead, let's use the new here-doc feature added in the previous
commit, which lets us write anything in the test body we want (except
the here-doc end marker on a line by itself, of course).

Note that we do use "\" in our marker to avoid interpolation (which is
the whole point). But we don't use "<<-", as we want to preserve
whitespace in the snippet (and running with "-v" before and after shows
that we produce the exact same output, except with the ugly $SQ
references fixed).

I just converted every test here, even though only some of them use
$SQ. But it would be equally correct to mix-and-match styles if we don't
mind the inconsistency.

I've also converted a few tests in t0600 which were moved from t1404 (I
had written this patch before they were moved, but it seemed worth
porting over the changes rather than losing them).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-07-10 10:14:23 -07:00

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#!/bin/sh
test_description='Test git update-ref error handling'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
# Create some references, perhaps run pack-refs --all, then try to
# create some more references. Ensure that the second creation fails
# with the correct error message.
# Usage: test_update_rejected <before> <pack> <create> <error>
# <before> is a ws-separated list of refs to create before the test
# <pack> (true or false) tells whether to pack the refs before the test
# <create> is a list of variables to attempt creating
# <error> is a string to look for in the stderr of update-ref.
# All references are created in the namespace specified by the current
# value of $prefix.
test_update_rejected () {
before="$1" &&
pack="$2" &&
create="$3" &&
error="$4" &&
printf "create $prefix/%s $C\n" $before |
git update-ref --stdin &&
git for-each-ref $prefix >unchanged &&
if $pack
then
git pack-refs --all
fi &&
printf "create $prefix/%s $C\n" $create >input &&
test_must_fail git update-ref --stdin <input 2>output.err &&
test_grep -F "$error" output.err &&
git for-each-ref $prefix >actual &&
test_cmp unchanged actual
}
# Test adding and deleting D/F-conflicting references in a single
# transaction.
df_test() {
prefix="$1"
pack=: symadd=false symdel=false add_del=false addref= delref=
shift
while test $# -gt 0
do
case "$1" in
--pack)
pack="git pack-refs --all"
shift
;;
--sym-add)
# Perform the add via a symbolic reference
symadd=true
shift
;;
--sym-del)
# Perform the del via a symbolic reference
symdel=true
shift
;;
--del-add)
# Delete first reference then add second
add_del=false
delref="$prefix/r/$2"
addref="$prefix/r/$3"
shift 3
;;
--add-del)
# Add first reference then delete second
add_del=true
addref="$prefix/r/$2"
delref="$prefix/r/$3"
shift 3
;;
*)
echo 1>&2 "Extra args to df_test: $*"
return 1
;;
esac
done
git update-ref "$delref" $C &&
if $symadd
then
addname="$prefix/s/symadd" &&
git symbolic-ref "$addname" "$addref"
else
addname="$addref"
fi &&
if $symdel
then
delname="$prefix/s/symdel" &&
git symbolic-ref "$delname" "$delref"
else
delname="$delref"
fi &&
$pack &&
if $add_del
then
printf "%s\n" "create $addname $D" "delete $delname"
else
printf "%s\n" "delete $delname" "create $addname $D"
fi >commands &&
test_must_fail git update-ref --stdin <commands 2>output.err &&
grep -E "fatal:( cannot lock ref '$addname':)? '$delref' exists; cannot create '$addref'" output.err &&
printf "%s\n" "$C $delref" >expected-refs &&
git for-each-ref --format="%(objectname) %(refname)" $prefix/r >actual-refs &&
test_cmp expected-refs actual-refs
}
test_expect_success 'setup' - <<\EOT
git commit --allow-empty -m Initial &&
C=$(git rev-parse HEAD) &&
git commit --allow-empty -m Second &&
D=$(git rev-parse HEAD) &&
git commit --allow-empty -m Third &&
E=$(git rev-parse HEAD)
EOT
test_expect_success 'existing loose ref is a simple prefix of new' - <<\EOT
prefix=refs/1l &&
test_update_rejected "a c e" false "b c/x d" \
"'$prefix/c' exists; cannot create '$prefix/c/x'"
EOT
test_expect_success 'existing packed ref is a simple prefix of new' - <<\EOT
prefix=refs/1p &&
test_update_rejected "a c e" true "b c/x d" \
"'$prefix/c' exists; cannot create '$prefix/c/x'"
EOT
test_expect_success 'existing loose ref is a deeper prefix of new' - <<\EOT
prefix=refs/2l &&
test_update_rejected "a c e" false "b c/x/y d" \
"'$prefix/c' exists; cannot create '$prefix/c/x/y'"
EOT
test_expect_success 'existing packed ref is a deeper prefix of new' - <<\EOT
prefix=refs/2p &&
test_update_rejected "a c e" true "b c/x/y d" \
"'$prefix/c' exists; cannot create '$prefix/c/x/y'"
EOT
test_expect_success 'new ref is a simple prefix of existing loose' - <<\EOT
prefix=refs/3l &&
test_update_rejected "a c/x e" false "b c d" \
"'$prefix/c/x' exists; cannot create '$prefix/c'"
EOT
test_expect_success 'new ref is a simple prefix of existing packed' - <<\EOT
prefix=refs/3p &&
test_update_rejected "a c/x e" true "b c d" \
"'$prefix/c/x' exists; cannot create '$prefix/c'"
EOT
test_expect_success 'new ref is a deeper prefix of existing loose' - <<\EOT
prefix=refs/4l &&
test_update_rejected "a c/x/y e" false "b c d" \
"'$prefix/c/x/y' exists; cannot create '$prefix/c'"
EOT
test_expect_success 'new ref is a deeper prefix of existing packed' - <<\EOT
prefix=refs/4p &&
test_update_rejected "a c/x/y e" true "b c d" \
"'$prefix/c/x/y' exists; cannot create '$prefix/c'"
EOT
test_expect_success 'one new ref is a simple prefix of another' - <<\EOT
prefix=refs/5 &&
test_update_rejected "a e" false "b c c/x d" \
"cannot process '$prefix/c' and '$prefix/c/x' at the same time"
EOT
test_expect_success 'D/F conflict prevents add long + delete short' - <<\EOT
df_test refs/df-al-ds --add-del foo/bar foo
EOT
test_expect_success 'D/F conflict prevents add short + delete long' - <<\EOT
df_test refs/df-as-dl --add-del foo foo/bar
EOT
test_expect_success 'D/F conflict prevents delete long + add short' - <<\EOT
df_test refs/df-dl-as --del-add foo/bar foo
EOT
test_expect_success 'D/F conflict prevents delete short + add long' - <<\EOT
df_test refs/df-ds-al --del-add foo foo/bar
EOT
test_expect_success 'D/F conflict prevents add long + delete short packed' - <<\EOT
df_test refs/df-al-dsp --pack --add-del foo/bar foo
EOT
test_expect_success 'D/F conflict prevents add short + delete long packed' - <<\EOT
df_test refs/df-as-dlp --pack --add-del foo foo/bar
EOT
test_expect_success 'D/F conflict prevents delete long packed + add short' - <<\EOT
df_test refs/df-dlp-as --pack --del-add foo/bar foo
EOT
test_expect_success 'D/F conflict prevents delete short packed + add long' - <<\EOT
df_test refs/df-dsp-al --pack --del-add foo foo/bar
EOT
# Try some combinations involving symbolic refs...
test_expect_success 'D/F conflict prevents indirect add long + delete short' - <<\EOT
df_test refs/df-ial-ds --sym-add --add-del foo/bar foo
EOT
test_expect_success 'D/F conflict prevents indirect add long + indirect delete short' - <<\EOT
df_test refs/df-ial-ids --sym-add --sym-del --add-del foo/bar foo
EOT
test_expect_success 'D/F conflict prevents indirect add short + indirect delete long' - <<\EOT
df_test refs/df-ias-idl --sym-add --sym-del --add-del foo foo/bar
EOT
test_expect_success 'D/F conflict prevents indirect delete long + indirect add short' - <<\EOT
df_test refs/df-idl-ias --sym-add --sym-del --del-add foo/bar foo
EOT
test_expect_success 'D/F conflict prevents indirect add long + delete short packed' - <<\EOT
df_test refs/df-ial-dsp --sym-add --pack --add-del foo/bar foo
EOT
test_expect_success 'D/F conflict prevents indirect add long + indirect delete short packed' - <<\EOT
df_test refs/df-ial-idsp --sym-add --sym-del --pack --add-del foo/bar foo
EOT
test_expect_success 'D/F conflict prevents add long + indirect delete short packed' - <<\EOT
df_test refs/df-al-idsp --sym-del --pack --add-del foo/bar foo
EOT
test_expect_success 'D/F conflict prevents indirect delete long packed + indirect add short' - <<\EOT
df_test refs/df-idlp-ias --sym-add --sym-del --pack --del-add foo/bar foo
EOT
# Test various errors when reading the old values of references...
test_expect_success 'missing old value blocks update' - <<\EOT
prefix=refs/missing-update &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/foo': unable to resolve reference '$prefix/foo'
EOF
printf "%s\n" "update $prefix/foo $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'incorrect old value blocks update' - <<\EOT
prefix=refs/incorrect-update &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/foo': is at $C but expected $D
EOF
printf "%s\n" "update $prefix/foo $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'existing old value blocks create' - <<\EOT
prefix=refs/existing-create &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/foo': reference already exists
EOF
printf "%s\n" "create $prefix/foo $E" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'incorrect old value blocks delete' - <<\EOT
prefix=refs/incorrect-delete &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/foo': is at $C but expected $D
EOF
printf "%s\n" "delete $prefix/foo $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'missing old value blocks indirect update' - <<\EOT
prefix=refs/missing-indirect-update &&
git symbolic-ref $prefix/symref $prefix/foo &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': unable to resolve reference '$prefix/foo'
EOF
printf "%s\n" "update $prefix/symref $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'incorrect old value blocks indirect update' - <<\EOT
prefix=refs/incorrect-indirect-update &&
git symbolic-ref $prefix/symref $prefix/foo &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': is at $C but expected $D
EOF
printf "%s\n" "update $prefix/symref $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'existing old value blocks indirect create' - <<\EOT
prefix=refs/existing-indirect-create &&
git symbolic-ref $prefix/symref $prefix/foo &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': reference already exists
EOF
printf "%s\n" "create $prefix/symref $E" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'incorrect old value blocks indirect delete' - <<\EOT
prefix=refs/incorrect-indirect-delete &&
git symbolic-ref $prefix/symref $prefix/foo &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': is at $C but expected $D
EOF
printf "%s\n" "delete $prefix/symref $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'missing old value blocks indirect no-deref update' - <<\EOT
prefix=refs/missing-noderef-update &&
git symbolic-ref $prefix/symref $prefix/foo &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': reference is missing but expected $D
EOF
printf "%s\n" "option no-deref" "update $prefix/symref $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'incorrect old value blocks indirect no-deref update' - <<\EOT
prefix=refs/incorrect-noderef-update &&
git symbolic-ref $prefix/symref $prefix/foo &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': is at $C but expected $D
EOF
printf "%s\n" "option no-deref" "update $prefix/symref $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'existing old value blocks indirect no-deref create' - <<\EOT
prefix=refs/existing-noderef-create &&
git symbolic-ref $prefix/symref $prefix/foo &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': reference already exists
EOF
printf "%s\n" "option no-deref" "create $prefix/symref $E" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_expect_success 'incorrect old value blocks indirect no-deref delete' - <<\EOT
prefix=refs/incorrect-noderef-delete &&
git symbolic-ref $prefix/symref $prefix/foo &&
git update-ref $prefix/foo $C &&
cat >expected <<-EOF &&
fatal: cannot lock ref '$prefix/symref': is at $C but expected $D
EOF
printf "%s\n" "option no-deref" "delete $prefix/symref $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
EOT
test_done