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git/t/t1500-rev-parse.sh
Jeff King 2d92ab32fd rev-parse: make --show-toplevel without a worktree an error
Ever since it was introduced in 7cceca5ccc (Add 'git rev-parse
--show-toplevel' option., 2010-01-12), the --show-toplevel option has
treated a missing working tree as a quiet success: it neither prints a
toplevel path, but nor does it report any kind of error.

While a caller could distinguish this case by looking for an empty
response, the behavior is rather confusing. We're better off complaining
that there is no working tree, as other internal commands would do in
similar cases (e.g., "git status" or any builtin with NEED_WORK_TREE set
would just die()). So let's do the same here.

While we're at it, let's clarify the documentation and add some tests,
both for the new behavior and for the more mundane case (which was not
covered).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-20 10:19:58 +09:00

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#!/bin/sh
test_description='test git rev-parse'
. ./test-lib.sh
# usage: [options] label is-bare is-inside-git is-inside-work prefix git-dir absolute-git-dir
test_rev_parse () {
d=
bare=
gitdir=
while :
do
case "$1" in
-C) d="$2"; shift; shift ;;
-b) case "$2" in
[tfu]*) bare="$2"; shift; shift ;;
*) error "test_rev_parse: bogus core.bare value '$2'" ;;
esac ;;
-g) gitdir="$2"; shift; shift ;;
-*) error "test_rev_parse: unrecognized option '$1'" ;;
*) break ;;
esac
done
name=$1
shift
for o in --is-bare-repository \
--is-inside-git-dir \
--is-inside-work-tree \
--show-prefix \
--git-dir \
--absolute-git-dir
do
test $# -eq 0 && break
expect="$1"
test_expect_success "$name: $o" '
if test -n "$gitdir"
then
test_when_finished "unset GIT_DIR" &&
GIT_DIR="$gitdir" &&
export GIT_DIR
fi &&
case "$bare" in
t*) test_config ${d:+-C} ${d:+"$d"} core.bare true ;;
f*) test_config ${d:+-C} ${d:+"$d"} core.bare false ;;
u*) test_unconfig ${d:+-C} ${d:+"$d"} core.bare ;;
esac &&
echo "$expect" >expect &&
git ${d:+-C} ${d:+"$d"} rev-parse $o >actual &&
test_cmp expect actual
'
shift
done
}
ROOT=$(pwd)
test_expect_success 'setup' '
test_oid_init &&
mkdir -p sub/dir work &&
cp -R .git repo.git
'
test_rev_parse toplevel false false true '' .git "$ROOT/.git"
test_rev_parse -C .git .git/ false true false '' . "$ROOT/.git"
test_rev_parse -C .git/objects .git/objects/ false true false '' "$ROOT/.git" "$ROOT/.git"
test_rev_parse -C sub/dir subdirectory false false true sub/dir/ "$ROOT/.git" "$ROOT/.git"
test_rev_parse -b t 'core.bare = true' true false false
test_rev_parse -b u 'core.bare undefined' false false true
test_rev_parse -C work -g ../.git -b f 'GIT_DIR=../.git, core.bare = false' false false true '' "../.git" "$ROOT/.git"
test_rev_parse -C work -g ../.git -b t 'GIT_DIR=../.git, core.bare = true' true false false ''
test_rev_parse -C work -g ../.git -b u 'GIT_DIR=../.git, core.bare undefined' false false true ''
test_rev_parse -C work -g ../repo.git -b f 'GIT_DIR=../repo.git, core.bare = false' false false true '' "../repo.git" "$ROOT/repo.git"
test_rev_parse -C work -g ../repo.git -b t 'GIT_DIR=../repo.git, core.bare = true' true false false ''
test_rev_parse -C work -g ../repo.git -b u 'GIT_DIR=../repo.git, core.bare undefined' false false true ''
test_expect_success 'git-common-dir from worktree root' '
echo .git >expect &&
git rev-parse --git-common-dir >actual &&
test_cmp expect actual
'
test_expect_success 'git-common-dir inside sub-dir' '
mkdir -p path/to/child &&
test_when_finished "rm -rf path" &&
echo "$(git -C path/to/child rev-parse --show-cdup).git" >expect &&
git -C path/to/child rev-parse --git-common-dir >actual &&
test_cmp expect actual
'
test_expect_success 'git-path from worktree root' '
echo .git/objects >expect &&
git rev-parse --git-path objects >actual &&
test_cmp expect actual
'
test_expect_success 'git-path inside sub-dir' '
mkdir -p path/to/child &&
test_when_finished "rm -rf path" &&
echo "$(git -C path/to/child rev-parse --show-cdup).git/objects" >expect &&
git -C path/to/child rev-parse --git-path objects >actual &&
test_cmp expect actual
'
test_expect_success 'rev-parse --is-shallow-repository in shallow repo' '
test_commit test_commit &&
echo true >expect &&
git clone --depth 1 --no-local . shallow &&
test_when_finished "rm -rf shallow" &&
git -C shallow rev-parse --is-shallow-repository >actual &&
test_cmp expect actual
'
test_expect_success 'rev-parse --is-shallow-repository in non-shallow repo' '
echo false >expect &&
git rev-parse --is-shallow-repository >actual &&
test_cmp expect actual
'
test_expect_success 'rev-parse --show-object-format in repo' '
echo "$(test_oid algo)" >expect &&
git rev-parse --show-object-format >actual &&
test_cmp expect actual &&
git rev-parse --show-object-format=storage >actual &&
test_cmp expect actual &&
git rev-parse --show-object-format=input >actual &&
test_cmp expect actual &&
git rev-parse --show-object-format=output >actual &&
test_cmp expect actual &&
test_must_fail git rev-parse --show-object-format=squeamish-ossifrage 2>err &&
grep "unknown mode for --show-object-format: squeamish-ossifrage" err
'
test_expect_success '--show-toplevel from subdir of working tree' '
pwd >expect &&
git -C sub/dir rev-parse --show-toplevel >actual &&
test_cmp expect actual
'
test_expect_success '--show-toplevel from inside .git' '
test_must_fail git -C .git rev-parse --show-toplevel
'
test_expect_success 'showing the superproject correctly' '
git rev-parse --show-superproject-working-tree >out &&
test_must_be_empty out &&
test_create_repo super &&
test_commit -C super test_commit &&
test_create_repo sub &&
test_commit -C sub test_commit &&
git -C super submodule add ../sub dir/sub &&
echo $(pwd)/super >expect &&
git -C super/dir/sub rev-parse --show-superproject-working-tree >out &&
test_cmp expect out &&
test_commit -C super submodule_add &&
git -C super checkout -b branch1 &&
git -C super/dir/sub checkout -b branch1 &&
test_commit -C super/dir/sub branch1_commit &&
git -C super add dir/sub &&
test_commit -C super branch1_commit &&
git -C super checkout -b branch2 master &&
git -C super/dir/sub checkout -b branch2 master &&
test_commit -C super/dir/sub branch2_commit &&
git -C super add dir/sub &&
test_commit -C super branch2_commit &&
test_must_fail git -C super merge branch1 &&
git -C super/dir/sub rev-parse --show-superproject-working-tree >out &&
test_cmp expect out
'
test_done