#!/bin/sh
-test_description='Tests of cwd/prefix/worktree/gitdir setup in all cases'
+test_description="Tests of cwd/prefix/worktree/gitdir setup in all cases
+A few rules for repo setup:
+
+1. GIT_DIR is relative to user's cwd. --git-dir is equivalent to
+ GIT_DIR.
+
+2. .git file is relative to parent directory. .git file is basically
+ symlink in disguise. The directory where .git file points to will
+ become new git_dir.
+
+3. core.worktree is relative to git_dir.
+
+4. GIT_WORK_TREE is relative to user's cwd. --work-tree is
+ equivalent to GIT_WORK_TREE.
+
+5. GIT_WORK_TREE/core.worktree was originally meant to work only if
+ GIT_DIR is set, but earlier git didn't enforce it, and some scripts
+ depend on the implementation that happened to first discover .git by
+ going up from the users $cwd and then using the specified working tree
+ that may or may not have any relation to where .git was found in. This
+ historical behaviour must be kept.
+
+6. Effective GIT_WORK_TREE overrides core.worktree and core.bare
+
+7. Effective core.worktree conflicts with core.bare
+
+8. If GIT_DIR is set but neither worktree nor bare setting is given,
+ original cwd becomes worktree.
+
+9. If .git discovery is done inside a repo, the repo becomes a bare
+ repo. .git discovery is performed if GIT_DIR is not set.
+
+10. If no worktree is available, cwd remains unchanged, prefix is
+ NULL.
+
+11. When user's cwd is outside worktree, cwd remains unchanged,
+ prefix is NULL.
+"
. ./test-lib.sh
-#
-# A few rules for repo setup:
-#
-# 1. GIT_DIR is relative to user's cwd. --git-dir is equivalent to
-# GIT_DIR.
-#
-# 2. .git file is relative to parent directory. .git file is basically
-# symlink in disguise. The directory where .git file points to will
-# become new git_dir.
-#
-# 3. core.worktree is relative to git_dir.
-#
-# 4. GIT_WORK_TREE is relative to user's cwd. --work-tree is
-# equivalent to GIT_WORK_TREE.
-#
-# 5. GIT_WORK_TREE/core.worktree is only effective if GIT_DIR is set
-# Uneffective worktree settings should be warned.
-#
-# 6. Effective GIT_WORK_TREE overrides core.worktree and core.bare
-#
-# 7. Effective core.worktree conflicts with core.bare
-#
-# 8. If GIT_DIR is set but neither worktree nor bare setting is given,
-# original cwd becomes worktree.
-#
-# 9. If .git discovery is done inside a repo, the repo becomes a bare
-# repo. .git discovery is performed if GIT_DIR is not set.
-#
-# 10. If no worktree is available, cwd remains unchanged, prefix is
-# NULL.
-#
-# 11. When user's cwd is outside worktree, cwd remains unchanged,
-# prefix is NULL.
-#
-
-test_repo() {
+here=$(pwd)
+
+test_repo () {
(
- cd "$1" &&
- if test -n "$2"; then GIT_DIR="$2" && export GIT_DIR; fi &&
- if test -n "$3"; then GIT_WORK_TREE="$3" && export GIT_WORK_TREE; fi &&
- rm -f trace &&
- GIT_TRACE="`pwd`/trace" git symbolic-ref HEAD >/dev/null &&
- grep '^setup: ' trace >result &&
- test_cmp expected result
+ cd "$1" &&
+ if test -n "$2"
+ then
+ GIT_DIR="$2" &&
+ export GIT_DIR
+ fi &&
+ if test -n "$3"
+ then
+ GIT_WORK_TREE="$3" &&
+ export GIT_WORK_TREE
+ fi &&
+ rm -f trace &&
+ GIT_TRACE="$(pwd)/trace" git symbolic-ref HEAD >/dev/null &&
+ grep '^setup: ' trace >result &&
+ test_cmp expected result
)
}
+maybe_config () {
+ file=$1 var=$2 value=$3 &&
+ if test "$value" != unset
+ then
+ git config --file="$file" "$var" "$value"
+ fi
+}
+
+setup_repo () {
+ name=$1 worktreecfg=$2 gitfile=$3 barecfg=$4 &&
+ sane_unset GIT_DIR GIT_WORK_TREE &&
+
+ git init "$name" &&
+ maybe_config "$name/.git/config" core.worktree "$worktreecfg" &&
+ maybe_config "$name/.git/config" core.bare "$barecfg" &&
+ mkdir -p "$name/sub/sub" &&
+
+ if test "${gitfile:+set}"
+ then
+ mv "$name/.git" "$name.git" &&
+ echo "gitdir: ../$name.git" >"$name/.git"
+ fi
+}
+
+maybe_set () {
+ var=$1 value=$2 &&
+ if test "$value" != unset
+ then
+ eval "$var=\$value" &&
+ export $var
+ fi
+}
+
+setup_env () {
+ worktreenv=$1 gitdirenv=$2 &&
+ sane_unset GIT_DIR GIT_WORK_TREE &&
+ maybe_set GIT_DIR "$gitdirenv" &&
+ maybe_set GIT_WORK_TREE "$worktreeenv"
+}
+
+expect () {
+ cat >"$1/expected" <<-EOF
+ setup: git_dir: $2
+ setup: worktree: $3
+ setup: cwd: $4
+ setup: prefix: $5
+ EOF
+}
+
+try_case () {
+ name=$1 worktreeenv=$2 gitdirenv=$3 &&
+ setup_env "$worktreeenv" "$gitdirenv" &&
+ expect "$name" "$4" "$5" "$6" "$7" &&
+ test_repo "$name"
+}
+
+run_wt_tests () {
+ N=$1 gitfile=$2
+
+ absgit="$here/$N/.git"
+ dotgit=.git
+ dotdotgit=../../.git
+
+ if test "$gitfile"
+ then
+ absgit="$here/$N.git"
+ dotgit=$absgit dotdotgit=$absgit
+ fi
+
+ test_expect_success "#$N: explicit GIT_WORK_TREE and GIT_DIR at toplevel" '
+ try_case $N "$here/$N" .git \
+ "$dotgit" "$here/$N" "$here/$N" "(null)" &&
+ try_case $N . .git \
+ "$dotgit" "$here/$N" "$here/$N" "(null)" &&
+ try_case $N "$here/$N" "$here/$N/.git" \
+ "$absgit" "$here/$N" "$here/$N" "(null)" &&
+ try_case $N . "$here/$N/.git" \
+ "$absgit" "$here/$N" "$here/$N" "(null)"
+ '
+
+ test_expect_success "#$N: explicit GIT_WORK_TREE and GIT_DIR in subdir" '
+ try_case $N/sub/sub "$here/$N" ../../.git \
+ "$absgit" "$here/$N" "$here/$N" sub/sub/ &&
+ try_case $N/sub/sub ../.. ../../.git \
+ "$absgit" "$here/$N" "$here/$N" sub/sub/ &&
+ try_case $N/sub/sub "$here/$N" "$here/$N/.git" \
+ "$absgit" "$here/$N" "$here/$N" sub/sub/ &&
+ try_case $N/sub/sub ../.. "$here/$N/.git" \
+ "$absgit" "$here/$N" "$here/$N" sub/sub/
+ '
+
+ test_expect_success "#$N: explicit GIT_WORK_TREE from parent of worktree" '
+ try_case $N "$here/$N/wt" .git \
+ "$dotgit" "$here/$N/wt" "$here/$N" "(null)" &&
+ try_case $N wt .git \
+ "$dotgit" "$here/$N/wt" "$here/$N" "(null)" &&
+ try_case $N wt "$here/$N/.git" \
+ "$absgit" "$here/$N/wt" "$here/$N" "(null)" &&
+ try_case $N "$here/$N/wt" "$here/$N/.git" \
+ "$absgit" "$here/$N/wt" "$here/$N" "(null)"
+ '
+
+ test_expect_success "#$N: explicit GIT_WORK_TREE from nephew of worktree" '
+ try_case $N/sub/sub "$here/$N/wt" ../../.git \
+ "$dotdotgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)" &&
+ try_case $N/sub/sub ../../wt ../../.git \
+ "$dotdotgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)" &&
+ try_case $N/sub/sub ../../wt "$here/$N/.git" \
+ "$absgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)" &&
+ try_case $N/sub/sub "$here/$N/wt" "$here/$N/.git" \
+ "$absgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)"
+ '
+
+ test_expect_success "#$N: chdir_to_toplevel uses worktree, not git dir" '
+ try_case $N "$here" .git \
+ "$absgit" "$here" "$here" $N/ &&
+ try_case $N .. .git \
+ "$absgit" "$here" "$here" $N/ &&
+ try_case $N .. "$here/$N/.git" \
+ "$absgit" "$here" "$here" $N/ &&
+ try_case $N "$here" "$here/$N/.git" \
+ "$absgit" "$here" "$here" $N/
+ '
+
+ test_expect_success "#$N: chdir_to_toplevel uses worktree (from subdir)" '
+ try_case $N/sub/sub "$here" ../../.git \
+ "$absgit" "$here" "$here" $N/sub/sub/ &&
+ try_case $N/sub/sub ../../.. ../../.git \
+ "$absgit" "$here" "$here" $N/sub/sub/ &&
+ try_case $N/sub/sub ../../../ "$here/$N/.git" \
+ "$absgit" "$here" "$here" $N/sub/sub/ &&
+ try_case $N/sub/sub "$here" "$here/$N/.git" \
+ "$absgit" "$here" "$here" $N/sub/sub/
+ '
+}
+
+# try_repo #c GIT_WORK_TREE GIT_DIR core.worktree .gitfile? core.bare \
+# (git dir) (work tree) (cwd) (prefix) \ <-- at toplevel
+# (git dir) (work tree) (cwd) (prefix) <-- from subdir
+try_repo () {
+ name=$1 worktreeenv=$2 gitdirenv=$3 &&
+ setup_repo "$name" "$4" "$5" "$6" &&
+ shift 6 &&
+ try_case "$name" "$worktreeenv" "$gitdirenv" \
+ "$1" "$2" "$3" "$4" &&
+ shift 4 &&
+ case "$gitdirenv" in
+ /* | ?:/* | unset) ;;
+ *)
+ gitdirenv=../$gitdirenv ;;
+ esac &&
+ try_case "$name/sub" "$worktreeenv" "$gitdirenv" \
+ "$1" "$2" "$3" "$4"
+}
+
# Bit 0 = GIT_WORK_TREE
# Bit 1 = GIT_DIR
# Bit 2 = core.worktree
# Bit 4 = bare repo
# Case# = encoding of the above 5 bits
-#
-# Case #0
-#
-############################################################
-#
-# Input:
-#
-# - GIT_WORK_TREE is not set
-# - GIT_DIR is not set
-# - core.worktree is not set
-# - .git is a directory
-# - core.bare is not set, cwd is outside .git
-#
-# Output:
-#
-# - worktree is .git's parent directory
-# - cwd is at worktree root dir
-# - prefix is calculated
-# - git_dir is set to ".git"
-# - cwd can't be outside worktree
-
-test_expect_success '#0: setup' '
- unset GIT_DIR GIT_WORK_TREE &&
- mkdir 0 0/sub &&
- cd 0 && git init && cd ..
-'
-
-test_expect_success '#0: at root' '
- cat >0/expected <<EOF &&
-setup: git_dir: .git
-setup: worktree: $TRASH_DIRECTORY/0
-setup: cwd: $TRASH_DIRECTORY/0
-setup: prefix: (null)
-EOF
- test_repo 0
-'
-
-test_expect_success '#0: in subdir' '
- cat >0/sub/expected <<EOF &&
-setup: git_dir: .git
-setup: worktree: $TRASH_DIRECTORY/0
-setup: cwd: $TRASH_DIRECTORY/0
-setup: prefix: sub/
-EOF
- test_repo 0/sub
+test_expect_success '#0: nonbare repo, no explicit configuration' '
+ try_repo 0 unset unset unset "" unset \
+ .git "$here/0" "$here/0" "(null)" \
+ .git "$here/0" "$here/0" sub/ 2>message &&
+ ! test -s message
+'
+
+test_expect_success '#1: GIT_WORK_TREE without explicit GIT_DIR is accepted' '
+ mkdir -p wt &&
+ try_repo 1 "$here" unset unset "" unset \
+ "$here/1/.git" "$here" "$here" 1/ \
+ "$here/1/.git" "$here" "$here" 1/sub/ 2>message &&
+ ! test -s message
+'
+
+test_expect_success '#2: worktree defaults to cwd with explicit GIT_DIR' '
+ try_repo 2 unset "$here/2/.git" unset "" unset \
+ "$here/2/.git" "$here/2" "$here/2" "(null)" \
+ "$here/2/.git" "$here/2/sub" "$here/2/sub" "(null)"
+'
+
+test_expect_success '#2b: relative GIT_DIR' '
+ try_repo 2b unset ".git" unset "" unset \
+ ".git" "$here/2b" "$here/2b" "(null)" \
+ "../.git" "$here/2b/sub" "$here/2b/sub" "(null)"
+'
+
+test_expect_success '#3: setup' '
+ setup_repo 3 unset "" unset &&
+ mkdir -p 3/sub/sub 3/wt/sub
+'
+run_wt_tests 3
+
+test_expect_success '#4: core.worktree without GIT_DIR set is accepted' '
+ setup_repo 4 ../sub "" unset &&
+ mkdir -p 4/sub sub &&
+ try_case 4 unset unset \
+ .git "$here/4/sub" "$here/4" "(null)" \
+ "$here/4/.git" "$here/4/sub" "$here/4/sub" "(null)" 2>message &&
+ ! test -s message
+'
+
+test_expect_success '#5: core.worktree + GIT_WORK_TREE is accepted' '
+ # or: you cannot intimidate away the lack of GIT_DIR setting
+ try_repo 5 "$here" unset "$here/5" "" unset \
+ "$here/5/.git" "$here" "$here" 5/ \
+ "$here/5/.git" "$here" "$here" 5/sub/ 2>message &&
+ try_repo 5a .. unset "$here/5a" "" unset \
+ "$here/5a/.git" "$here" "$here" 5a/ \
+ "$here/5a/.git" "$here/5a" "$here/5a" sub/ &&
+ ! test -s message
+'
+
+test_expect_success '#6: setting GIT_DIR brings core.worktree to life' '
+ setup_repo 6 "$here/6" "" unset &&
+ try_case 6 unset .git \
+ .git "$here/6" "$here/6" "(null)" &&
+ try_case 6 unset "$here/6/.git" \
+ "$here/6/.git" "$here/6" "$here/6" "(null)" &&
+ try_case 6/sub/sub unset ../../.git \
+ "$here/6/.git" "$here/6" "$here/6" sub/sub/ &&
+ try_case 6/sub/sub unset "$here/6/.git" \
+ "$here/6/.git" "$here/6" "$here/6" sub/sub/
+'
+
+test_expect_success '#6b: GIT_DIR set, core.worktree relative' '
+ setup_repo 6b .. "" unset &&
+ try_case 6b unset .git \
+ .git "$here/6b" "$here/6b" "(null)" &&
+ try_case 6b unset "$here/6b/.git" \
+ "$here/6b/.git" "$here/6b" "$here/6b" "(null)" &&
+ try_case 6b/sub/sub unset ../../.git \
+ "$here/6b/.git" "$here/6b" "$here/6b" sub/sub/ &&
+ try_case 6b/sub/sub unset "$here/6b/.git" \
+ "$here/6b/.git" "$here/6b" "$here/6b" sub/sub/
+'
+
+test_expect_success '#6c: GIT_DIR set, core.worktree=../wt (absolute)' '
+ setup_repo 6c "$here/6c/wt" "" unset &&
+ mkdir -p 6c/wt/sub &&
+
+ try_case 6c unset .git \
+ .git "$here/6c/wt" "$here/6c" "(null)" &&
+ try_case 6c unset "$here/6c/.git" \
+ "$here/6c/.git" "$here/6c/wt" "$here/6c" "(null)" &&
+ try_case 6c/sub/sub unset ../../.git \
+ ../../.git "$here/6c/wt" "$here/6c/sub/sub" "(null)" &&
+ try_case 6c/sub/sub unset "$here/6c/.git" \
+ "$here/6c/.git" "$here/6c/wt" "$here/6c/sub/sub" "(null)"
+'
+
+test_expect_success '#6d: GIT_DIR set, core.worktree=../wt (relative)' '
+ setup_repo 6d "$here/6d/wt" "" unset &&
+ mkdir -p 6d/wt/sub &&
+
+ try_case 6d unset .git \
+ .git "$here/6d/wt" "$here/6d" "(null)" &&
+ try_case 6d unset "$here/6d/.git" \
+ "$here/6d/.git" "$here/6d/wt" "$here/6d" "(null)" &&
+ try_case 6d/sub/sub unset ../../.git \
+ ../../.git "$here/6d/wt" "$here/6d/sub/sub" "(null)" &&
+ try_case 6d/sub/sub unset "$here/6d/.git" \
+ "$here/6d/.git" "$here/6d/wt" "$here/6d/sub/sub" "(null)"
+'
+
+test_expect_success '#6e: GIT_DIR set, core.worktree=../.. (absolute)' '
+ setup_repo 6e "$here" "" unset &&
+ try_case 6e unset .git \
+ "$here/6e/.git" "$here" "$here" 6e/ &&
+ try_case 6e unset "$here/6e/.git" \
+ "$here/6e/.git" "$here" "$here" 6e/ &&
+ try_case 6e/sub/sub unset ../../.git \
+ "$here/6e/.git" "$here" "$here" 6e/sub/sub/ &&
+ try_case 6e/sub/sub unset "$here/6e/.git" \
+ "$here/6e/.git" "$here" "$here" 6e/sub/sub/
+'
+
+test_expect_success '#6f: GIT_DIR set, core.worktree=../.. (relative)' '
+ setup_repo 6f ../../ "" unset &&
+ try_case 6f unset .git \
+ "$here/6f/.git" "$here" "$here" 6f/ &&
+ try_case 6f unset "$here/6f/.git" \
+ "$here/6f/.git" "$here" "$here" 6f/ &&
+ try_case 6f/sub/sub unset ../../.git \
+ "$here/6f/.git" "$here" "$here" 6f/sub/sub/ &&
+ try_case 6f/sub/sub unset "$here/6f/.git" \
+ "$here/6f/.git" "$here" "$here" 6f/sub/sub/
+'
+
+# case #7: GIT_WORK_TREE overrides core.worktree.
+test_expect_success '#7: setup' '
+ setup_repo 7 non-existent "" unset &&
+ mkdir -p 7/sub/sub 7/wt/sub
+'
+run_wt_tests 7
+
+test_expect_success '#8: gitfile, easy case' '
+ try_repo 8 unset unset unset gitfile unset \
+ "$here/8.git" "$here/8" "$here/8" "(null)" \
+ "$here/8.git" "$here/8" "$here/8" sub/
+'
+
+test_expect_success '#9: GIT_WORK_TREE accepted with gitfile' '
+ mkdir -p 9/wt &&
+ try_repo 9 wt unset unset gitfile unset \
+ "$here/9.git" "$here/9/wt" "$here/9" "(null)" \
+ "$here/9.git" "$here/9/sub/wt" "$here/9/sub" "(null)" 2>message &&
+ ! test -s message
+'
+
+test_expect_success '#10: GIT_DIR can point to gitfile' '
+ try_repo 10 unset "$here/10/.git" unset gitfile unset \
+ "$here/10.git" "$here/10" "$here/10" "(null)" \
+ "$here/10.git" "$here/10/sub" "$here/10/sub" "(null)"
+'
+
+test_expect_success '#10b: relative GIT_DIR can point to gitfile' '
+ try_repo 10b unset .git unset gitfile unset \
+ "$here/10b.git" "$here/10b" "$here/10b" "(null)" \
+ "$here/10b.git" "$here/10b/sub" "$here/10b/sub" "(null)"
+'
+
+# case #11: GIT_WORK_TREE works, gitfile case.
+test_expect_success '#11: setup' '
+ setup_repo 11 unset gitfile unset &&
+ mkdir -p 11/sub/sub 11/wt/sub
+'
+run_wt_tests 11 gitfile
+
+test_expect_success '#12: core.worktree with gitfile is accepted' '
+ try_repo 12 unset unset "$here/12" gitfile unset \
+ "$here/12.git" "$here/12" "$here/12" "(null)" \
+ "$here/12.git" "$here/12" "$here/12" sub/ 2>message &&
+ ! test -s message
+'
+
+test_expect_success '#13: core.worktree+GIT_WORK_TREE accepted (with gitfile)' '
+ # or: you cannot intimidate away the lack of GIT_DIR setting
+ try_repo 13 non-existent-too unset non-existent gitfile unset \
+ "$here/13.git" "$here/13/non-existent-too" "$here/13" "(null)" \
+ "$here/13.git" "$here/13/sub/non-existent-too" "$here/13/sub" "(null)" 2>message &&
+ ! test -s message
+'
+
+# case #14.
+# If this were more table-driven, it could share code with case #6.
+
+test_expect_success '#14: core.worktree with GIT_DIR pointing to gitfile' '
+ setup_repo 14 "$here/14" gitfile unset &&
+ try_case 14 unset .git \
+ "$here/14.git" "$here/14" "$here/14" "(null)" &&
+ try_case 14 unset "$here/14/.git" \
+ "$here/14.git" "$here/14" "$here/14" "(null)" &&
+ try_case 14/sub/sub unset ../../.git \
+ "$here/14.git" "$here/14" "$here/14" sub/sub/ &&
+ try_case 14/sub/sub unset "$here/14/.git" \
+ "$here/14.git" "$here/14" "$here/14" sub/sub/ &&
+
+ setup_repo 14c "$here/14c/wt" gitfile unset &&
+ mkdir -p 14c/wt/sub &&
+
+ try_case 14c unset .git \
+ "$here/14c.git" "$here/14c/wt" "$here/14c" "(null)" &&
+ try_case 14c unset "$here/14c/.git" \
+ "$here/14c.git" "$here/14c/wt" "$here/14c" "(null)" &&
+ try_case 14c/sub/sub unset ../../.git \
+ "$here/14c.git" "$here/14c/wt" "$here/14c/sub/sub" "(null)" &&
+ try_case 14c/sub/sub unset "$here/14c/.git" \
+ "$here/14c.git" "$here/14c/wt" "$here/14c/sub/sub" "(null)" &&
+
+ setup_repo 14d "$here/14d/wt" gitfile unset &&
+ mkdir -p 14d/wt/sub &&
+
+ try_case 14d unset .git \
+ "$here/14d.git" "$here/14d/wt" "$here/14d" "(null)" &&
+ try_case 14d unset "$here/14d/.git" \
+ "$here/14d.git" "$here/14d/wt" "$here/14d" "(null)" &&
+ try_case 14d/sub/sub unset ../../.git \
+ "$here/14d.git" "$here/14d/wt" "$here/14d/sub/sub" "(null)" &&
+ try_case 14d/sub/sub unset "$here/14d/.git" \
+ "$here/14d.git" "$here/14d/wt" "$here/14d/sub/sub" "(null)" &&
+
+ setup_repo 14e "$here" gitfile unset &&
+ try_case 14e unset .git \
+ "$here/14e.git" "$here" "$here" 14e/ &&
+ try_case 14e unset "$here/14e/.git" \
+ "$here/14e.git" "$here" "$here" 14e/ &&
+ try_case 14e/sub/sub unset ../../.git \
+ "$here/14e.git" "$here" "$here" 14e/sub/sub/ &&
+ try_case 14e/sub/sub unset "$here/14e/.git" \
+ "$here/14e.git" "$here" "$here" 14e/sub/sub/
+'
+
+test_expect_success '#14b: core.worktree is relative to actual git dir' '
+ setup_repo 14b ../14b gitfile unset &&
+ try_case 14b unset .git \
+ "$here/14b.git" "$here/14b" "$here/14b" "(null)" &&
+ try_case 14b unset "$here/14b/.git" \
+ "$here/14b.git" "$here/14b" "$here/14b" "(null)" &&
+ try_case 14b/sub/sub unset ../../.git \
+ "$here/14b.git" "$here/14b" "$here/14b" sub/sub/ &&
+ try_case 14b/sub/sub unset "$here/14b/.git" \
+ "$here/14b.git" "$here/14b" "$here/14b" sub/sub/ &&
+
+ setup_repo 14f ../ gitfile unset &&
+ try_case 14f unset .git \
+ "$here/14f.git" "$here" "$here" 14f/ &&
+ try_case 14f unset "$here/14f/.git" \
+ "$here/14f.git" "$here" "$here" 14f/ &&
+ try_case 14f/sub/sub unset ../../.git \
+ "$here/14f.git" "$here" "$here" 14f/sub/sub/ &&
+ try_case 14f/sub/sub unset "$here/14f/.git" \
+ "$here/14f.git" "$here" "$here" 14f/sub/sub/
+'
+
+# case #15: GIT_WORK_TREE overrides core.worktree (gitfile case).
+test_expect_success '#15: setup' '
+ setup_repo 15 non-existent gitfile unset &&
+ mkdir -p 15/sub/sub 15/wt/sub
+'
+run_wt_tests 15 gitfile
+
+test_expect_success '#16a: implicitly bare repo (cwd inside .git dir)' '
+ setup_repo 16a unset "" unset &&
+ mkdir -p 16a/.git/wt/sub &&
+
+ try_case 16a/.git unset unset \
+ . "(null)" "$here/16a/.git" "(null)" &&
+ try_case 16a/.git/wt unset unset \
+ "$here/16a/.git" "(null)" "$here/16a/.git/wt" "(null)" &&
+ try_case 16a/.git/wt/sub unset unset \
+ "$here/16a/.git" "(null)" "$here/16a/.git/wt/sub" "(null)"
+'
+
+test_expect_success '#16b: bare .git (cwd inside .git dir)' '
+ setup_repo 16b unset "" true &&
+ mkdir -p 16b/.git/wt/sub &&
+
+ try_case 16b/.git unset unset \
+ . "(null)" "$here/16b/.git" "(null)" &&
+ try_case 16b/.git/wt unset unset \
+ "$here/16b/.git" "(null)" "$here/16b/.git/wt" "(null)" &&
+ try_case 16b/.git/wt/sub unset unset \
+ "$here/16b/.git" "(null)" "$here/16b/.git/wt/sub" "(null)"
+'
+
+test_expect_success '#16c: bare .git has no worktree' '
+ try_repo 16c unset unset unset "" true \
+ .git "(null)" "$here/16c" "(null)" \
+ "$here/16c/.git" "(null)" "$here/16c/sub" "(null)"
+'
+
+test_expect_success '#17: GIT_WORK_TREE without explicit GIT_DIR is accepted (bare case)' '
+ # Just like #16.
+ setup_repo 17a unset "" true &&
+ setup_repo 17b unset "" true &&
+ mkdir -p 17a/.git/wt/sub &&
+ mkdir -p 17b/.git/wt/sub &&
+
+ try_case 17a/.git "$here/17a" unset \
+ "$here/17a/.git" "$here/17a" "$here/17a" .git/ \
+ 2>message &&
+ try_case 17a/.git/wt "$here/17a" unset \
+ "$here/17a/.git" "$here/17a" "$here/17a" .git/wt/ &&
+ try_case 17a/.git/wt/sub "$here/17a" unset \
+ "$here/17a/.git" "$here/17a" "$here/17a" .git/wt/sub/ &&
+
+ try_case 17b/.git "$here/17b" unset \
+ "$here/17b/.git" "$here/17b" "$here/17b" .git/ &&
+ try_case 17b/.git/wt "$here/17b" unset \
+ "$here/17b/.git" "$here/17b" "$here/17b" .git/wt/ &&
+ try_case 17b/.git/wt/sub "$here/17b" unset \
+ "$here/17b/.git" "$here/17b" "$here/17b" .git/wt/sub/ &&
+
+ try_repo 17c "$here/17c" unset unset "" true \
+ .git "$here/17c" "$here/17c" "(null)" \
+ "$here/17c/.git" "$here/17c" "$here/17c" sub/ 2>message &&
+ ! test -s message
+'
+
+test_expect_success '#18: bare .git named by GIT_DIR has no worktree' '
+ try_repo 18 unset .git unset "" true \
+ .git "(null)" "$here/18" "(null)" \
+ ../.git "(null)" "$here/18/sub" "(null)" &&
+ try_repo 18b unset "$here/18b/.git" unset "" true \
+ "$here/18b/.git" "(null)" "$here/18b" "(null)" \
+ "$here/18b/.git" "(null)" "$here/18b/sub" "(null)"
+'
+
+# Case #19: GIT_DIR + GIT_WORK_TREE suppresses bareness.
+test_expect_success '#19: setup' '
+ setup_repo 19 unset "" true &&
+ mkdir -p 19/sub/sub 19/wt/sub
+'
+run_wt_tests 19
+
+test_expect_success '#20a: core.worktree without GIT_DIR accepted (inside .git)' '
+ # Unlike case #16a.
+ setup_repo 20a "$here/20a" "" unset &&
+ mkdir -p 20a/.git/wt/sub &&
+ try_case 20a/.git unset unset \
+ "$here/20a/.git" "$here/20a" "$here/20a" .git/ 2>message &&
+ try_case 20a/.git/wt unset unset \
+ "$here/20a/.git" "$here/20a" "$here/20a" .git/wt/ &&
+ try_case 20a/.git/wt/sub unset unset \
+ "$here/20a/.git" "$here/20a" "$here/20a" .git/wt/sub/ &&
+ ! test -s message
+'
+
+test_expect_success '#20b/c: core.worktree and core.bare conflict' '
+ setup_repo 20b non-existent "" true &&
+ mkdir -p 20b/.git/wt/sub &&
+ (
+ cd 20b/.git &&
+ test_must_fail git symbolic-ref HEAD >/dev/null
+ ) 2>message &&
+ grep "core.bare and core.worktree" message
+'
+
+# Case #21: core.worktree/GIT_WORK_TREE overrides core.bare' '
+test_expect_success '#21: setup, core.worktree warns before overriding core.bare' '
+ setup_repo 21 non-existent "" unset &&
+ mkdir -p 21/.git/wt/sub &&
+ (
+ cd 21/.git &&
+ GIT_WORK_TREE="$here/21" &&
+ export GIT_WORK_TREE &&
+ git symbolic-ref HEAD >/dev/null
+ ) 2>message &&
+ ! test -s message
+
+'
+run_wt_tests 21
+
+test_expect_success '#22a: core.worktree = GIT_DIR = .git dir' '
+ # like case #6.
+
+ setup_repo 22a "$here/22a/.git" "" unset &&
+ setup_repo 22ab . "" unset
+ mkdir -p 22a/.git/sub 22a/sub &&
+ mkdir -p 22ab/.git/sub 22ab/sub &&
+ try_case 22a/.git unset . \
+ . "$here/22a/.git" "$here/22a/.git" "(null)" &&
+ try_case 22a/.git unset "$here/22a/.git" \
+ "$here/22a/.git" "$here/22a/.git" "$here/22a/.git" "(null)" &&
+ try_case 22a/.git/sub unset .. \
+ "$here/22a/.git" "$here/22a/.git" "$here/22a/.git" sub/ &&
+ try_case 22a/.git/sub unset "$here/22a/.git" \
+ "$here/22a/.git" "$here/22a/.git" "$here/22a/.git" sub/ &&
+
+ try_case 22ab/.git unset . \
+ . "$here/22ab/.git" "$here/22ab/.git" "(null)" &&
+ try_case 22ab/.git unset "$here/22ab/.git" \
+ "$here/22ab/.git" "$here/22ab/.git" "$here/22ab/.git" "(null)" &&
+ try_case 22ab/.git/sub unset .. \
+ "$here/22ab/.git" "$here/22ab/.git" "$here/22ab/.git" sub/ &&
+ try_case 22ab/.git unset "$here/22ab/.git" \
+ "$here/22ab/.git" "$here/22ab/.git" "$here/22ab/.git" "(null)"
+'
+
+test_expect_success '#22b: core.worktree child of .git, GIT_DIR=.git' '
+ setup_repo 22b "$here/22b/.git/wt" "" unset &&
+ setup_repo 22bb wt "" unset &&
+ mkdir -p 22b/.git/sub 22b/sub 22b/.git/wt/sub 22b/wt/sub &&
+ mkdir -p 22bb/.git/sub 22bb/sub 22bb/.git/wt 22bb/wt &&
+
+ try_case 22b/.git unset . \
+ . "$here/22b/.git/wt" "$here/22b/.git" "(null)" &&
+ try_case 22b/.git unset "$here/22b/.git" \
+ "$here/22b/.git" "$here/22b/.git/wt" "$here/22b/.git" "(null)" &&
+ try_case 22b/.git/sub unset .. \
+ .. "$here/22b/.git/wt" "$here/22b/.git/sub" "(null)" &&
+ try_case 22b/.git/sub unset "$here/22b/.git" \
+ "$here/22b/.git" "$here/22b/.git/wt" "$here/22b/.git/sub" "(null)" &&
+
+ try_case 22bb/.git unset . \
+ . "$here/22bb/.git/wt" "$here/22bb/.git" "(null)" &&
+ try_case 22bb/.git unset "$here/22bb/.git" \
+ "$here/22bb/.git" "$here/22bb/.git/wt" "$here/22bb/.git" "(null)" &&
+ try_case 22bb/.git/sub unset .. \
+ .. "$here/22bb/.git/wt" "$here/22bb/.git/sub" "(null)" &&
+ try_case 22bb/.git/sub unset "$here/22bb/.git" \
+ "$here/22bb/.git" "$here/22bb/.git/wt" "$here/22bb/.git/sub" "(null)"
+'
+
+test_expect_success '#22c: core.worktree = .git/.., GIT_DIR=.git' '
+ setup_repo 22c "$here/22c" "" unset &&
+ setup_repo 22cb .. "" unset &&
+ mkdir -p 22c/.git/sub 22c/sub &&
+ mkdir -p 22cb/.git/sub 22cb/sub &&
+
+ try_case 22c/.git unset . \
+ "$here/22c/.git" "$here/22c" "$here/22c" .git/ &&
+ try_case 22c/.git unset "$here/22c/.git" \
+ "$here/22c/.git" "$here/22c" "$here/22c" .git/ &&
+ try_case 22c/.git/sub unset .. \
+ "$here/22c/.git" "$here/22c" "$here/22c" .git/sub/ &&
+ try_case 22c/.git/sub unset "$here/22c/.git" \
+ "$here/22c/.git" "$here/22c" "$here/22c" .git/sub/ &&
+
+ try_case 22cb/.git unset . \
+ "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/ &&
+ try_case 22cb/.git unset "$here/22cb/.git" \
+ "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/ &&
+ try_case 22cb/.git/sub unset .. \
+ "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/sub/ &&
+ try_case 22cb/.git/sub unset "$here/22cb/.git" \
+ "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/sub/
+'
+
+test_expect_success '#22.2: core.worktree and core.bare conflict' '
+ setup_repo 22 "$here/22" "" true &&
+ (
+ cd 22/.git &&
+ GIT_DIR=. &&
+ export GIT_DIR &&
+ test_must_fail git symbolic-ref HEAD 2>result
+ ) &&
+ (
+ cd 22 &&
+ GIT_DIR=.git &&
+ export GIT_DIR &&
+ test_must_fail git symbolic-ref HEAD 2>result
+ ) &&
+ grep "core.bare and core.worktree" 22/.git/result &&
+ grep "core.bare and core.worktree" 22/result
+'
+
+# Case #23: GIT_DIR + GIT_WORK_TREE(+core.worktree) suppresses bareness.
+test_expect_success '#23: setup' '
+ setup_repo 23 non-existent "" true &&
+ mkdir -p 23/sub/sub 23/wt/sub
+'
+run_wt_tests 23
+
+test_expect_success '#24: bare repo has no worktree (gitfile case)' '
+ try_repo 24 unset unset unset gitfile true \
+ "$here/24.git" "(null)" "$here/24" "(null)" \
+ "$here/24.git" "(null)" "$here/24/sub" "(null)"
+'
+
+test_expect_success '#25: GIT_WORK_TREE accepted if GIT_DIR unset (bare gitfile case)' '
+ try_repo 25 "$here/25" unset unset gitfile true \
+ "$here/25.git" "$here/25" "$here/25" "(null)" \
+ "$here/25.git" "$here/25" "$here/25" "sub/" 2>message &&
+ ! test -s message
+'
+
+test_expect_success '#26: bare repo has no worktree (GIT_DIR -> gitfile case)' '
+ try_repo 26 unset "$here/26/.git" unset gitfile true \
+ "$here/26.git" "(null)" "$here/26" "(null)" \
+ "$here/26.git" "(null)" "$here/26/sub" "(null)" &&
+ try_repo 26b unset .git unset gitfile true \
+ "$here/26b.git" "(null)" "$here/26b" "(null)" \
+ "$here/26b.git" "(null)" "$here/26b/sub" "(null)"
+'
+
+# Case #27: GIT_DIR + GIT_WORK_TREE suppresses bareness (with gitfile).
+test_expect_success '#27: setup' '
+ setup_repo 27 unset gitfile true &&
+ mkdir -p 27/sub/sub 27/wt/sub
+'
+run_wt_tests 27 gitfile
+
+test_expect_success '#28: core.worktree and core.bare conflict (gitfile case)' '
+ setup_repo 28 "$here/28" gitfile true &&
+ (
+ cd 28 &&
+ test_must_fail git symbolic-ref HEAD
+ ) 2>message &&
+ ! grep "^warning:" message &&
+ grep "core.bare and core.worktree" message
+'
+
+# Case #29: GIT_WORK_TREE(+core.worktree) overrides core.bare (gitfile case).
+test_expect_success '#29: setup' '
+ setup_repo 29 non-existent gitfile true &&
+ mkdir -p 29/sub/sub 29/wt/sub
+ (
+ cd 29 &&
+ GIT_WORK_TREE="$here/29" &&
+ export GIT_WORK_TREE &&
+ git symbolic-ref HEAD >/dev/null
+ ) 2>message &&
+ ! test -s message
+'
+run_wt_tests 29 gitfile
+
+test_expect_success '#30: core.worktree and core.bare conflict (gitfile version)' '
+ # Just like case #22.
+ setup_repo 30 "$here/30" gitfile true &&
+ (
+ cd 30 &&
+ GIT_DIR=.git &&
+ export GIT_DIR &&
+ test_must_fail git symbolic-ref HEAD 2>result
+ ) &&
+ grep "core.bare and core.worktree" 30/result
+'
+
+# Case #31: GIT_DIR + GIT_WORK_TREE(+core.worktree) suppresses
+# bareness (gitfile version).
+test_expect_success '#31: setup' '
+ setup_repo 31 non-existent gitfile true &&
+ mkdir -p 31/sub/sub 31/wt/sub
'
+run_wt_tests 31 gitfile
test_done