t/t1510-repo-setup.sh

   1 #!/bin/sh
   2
   3 test_description="Tests of cwd/prefix/worktree/gitdir setup in all cases
   4
   5 A few rules for repo setup:
   6
   7 1. GIT_DIR is relative to user's cwd. --git-dir is equivalent to
   8    GIT_DIR.
   9
  10 2. .git file is relative to parent directory. .git file is basically
  11    symlink in disguise. The directory where .git file points to will
  12    become new git_dir.
  13
  14 3. core.worktree is relative to git_dir.
  15
  16 4. GIT_WORK_TREE is relative to user's cwd. --work-tree is
  17    equivalent to GIT_WORK_TREE.
  18
  19 5. GIT_WORK_TREE/core.worktree was originally meant to work only if
  20    GIT_DIR is set, but earlier git didn't enforce it, and some scripts
  21    depend on the implementation that happened to first discover .git by
  22    going up from the users $cwd and then using the specified working tree
  23    that may or may not have any relation to where .git was found in.  This
  24    historical behaviour must be kept.
  25
  26 6. Effective GIT_WORK_TREE overrides core.worktree and core.bare
  27
  28 7. Effective core.worktree conflicts with core.bare
  29
  30 8. If GIT_DIR is set but neither worktree nor bare setting is given,
  31    original cwd becomes worktree.
  32
  33 9. If .git discovery is done inside a repo, the repo becomes a bare
  34    repo. .git discovery is performed if GIT_DIR is not set.
  35
  36 10. If no worktree is available, cwd remains unchanged, prefix is
  37     NULL.
  38
  39 11. When user's cwd is outside worktree, cwd remains unchanged,
  40     prefix is NULL.
  41 "
  42
  43 # This test heavily relies on the standard error of nested function calls.
  44 test_untraceable=UnfortunatelyYes
  45
  46 TEST_PASSES_SANITIZE_LEAK=true
  47 . ./test-lib.sh
  48
  49 here=$(pwd)
  50
  51 test_repo () {
  52         (
  53                 cd "$1" &&
  54                 if test -n "$2"
  55                 then
  56                         GIT_DIR="$2" &&
  57                         export GIT_DIR
  58                 fi &&
  59                 if test -n "$3"
  60                 then
  61                         GIT_WORK_TREE="$3" &&
  62                         export GIT_WORK_TREE
  63                 fi &&
  64                 rm -f trace &&
  65                 GIT_TRACE_SETUP="$(pwd)/trace" git symbolic-ref HEAD >/dev/null &&
  66                 grep '^setup: ' trace >result &&
  67                 test_cmp expected result
  68         )
  69 }
  70
  71 maybe_config () {
  72         file=$1 var=$2 value=$3 &&
  73         if test "$value" != unset
  74         then
  75                 git config --file="$file" "$var" "$value"
  76         fi
  77 }
  78
  79 setup_repo () {
  80         name=$1 worktreecfg=$2 gitfile=$3 barecfg=$4 &&
  81         sane_unset GIT_DIR GIT_WORK_TREE &&
  82
  83         git -c init.defaultBranch=initial init "$name" &&
  84         maybe_config "$name/.git/config" core.worktree "$worktreecfg" &&
  85         maybe_config "$name/.git/config" core.bare "$barecfg" &&
  86         mkdir -p "$name/sub/sub" &&
  87
  88         if test "${gitfile:+set}"
  89         then
  90                 mv "$name/.git" "$name.git" &&
  91                 echo "gitdir: ../$name.git" >"$name/.git"
  92         fi
  93 }
  94
  95 maybe_set () {
  96         var=$1 value=$2 &&
  97         if test "$value" != unset
  98         then
  99                 eval "$var=\$value" &&
 100                 export $var
 101         fi
 102 }
 103
 104 setup_env () {
 105         worktreenv=$1 gitdirenv=$2 &&
 106         sane_unset GIT_DIR GIT_WORK_TREE &&
 107         maybe_set GIT_DIR "$gitdirenv" &&
 108         maybe_set GIT_WORK_TREE "$worktreeenv"
 109 }
 110
 111 expect () {
 112         cat >"$1/expected" <<-EOF
 113         setup: git_dir: $2
 114         setup: git_common_dir: $2
 115         setup: worktree: $3
 116         setup: cwd: $4
 117         setup: prefix: $5
 118         EOF
 119 }
 120
 121 try_case () {
 122         name=$1 worktreeenv=$2 gitdirenv=$3 &&
 123         setup_env "$worktreeenv" "$gitdirenv" &&
 124         expect "$name" "$4" "$5" "$6" "$7" &&
 125         test_repo "$name"
 126 }
 127
 128 run_wt_tests () {
 129         N=$1 gitfile=$2
 130
 131         absgit="$here/$N/.git"
 132         dotgit=.git
 133         dotdotgit=../../.git
 134
 135         if test "$gitfile"
 136         then
 137                 absgit="$here/$N.git"
 138                 dotgit=$absgit dotdotgit=$absgit
 139         fi
 140
 141         test_expect_success "#$N: explicit GIT_WORK_TREE and GIT_DIR at toplevel" '
 142                 try_case $N "$here/$N" .git \
 143                         "$dotgit" "$here/$N" "$here/$N" "(null)" &&
 144                 try_case $N . .git \
 145                         "$dotgit" "$here/$N" "$here/$N" "(null)" &&
 146                 try_case $N "$here/$N" "$here/$N/.git" \
 147                         "$absgit" "$here/$N" "$here/$N" "(null)" &&
 148                 try_case $N . "$here/$N/.git" \
 149                         "$absgit" "$here/$N" "$here/$N" "(null)"
 150         '
 151
 152         test_expect_success "#$N: explicit GIT_WORK_TREE and GIT_DIR in subdir" '
 153                 try_case $N/sub/sub "$here/$N" ../../.git \
 154                         "$absgit" "$here/$N" "$here/$N" sub/sub/ &&
 155                 try_case $N/sub/sub ../.. ../../.git \
 156                         "$absgit" "$here/$N" "$here/$N" sub/sub/ &&
 157                 try_case $N/sub/sub "$here/$N" "$here/$N/.git" \
 158                         "$absgit" "$here/$N" "$here/$N" sub/sub/ &&
 159                 try_case $N/sub/sub ../.. "$here/$N/.git" \
 160                         "$absgit" "$here/$N" "$here/$N" sub/sub/
 161         '
 162
 163         test_expect_success "#$N: explicit GIT_WORK_TREE from parent of worktree" '
 164                 try_case $N "$here/$N/wt" .git \
 165                         "$dotgit" "$here/$N/wt" "$here/$N" "(null)" &&
 166                 try_case $N wt .git \
 167                         "$dotgit" "$here/$N/wt" "$here/$N" "(null)" &&
 168                 try_case $N wt "$here/$N/.git" \
 169                         "$absgit" "$here/$N/wt" "$here/$N" "(null)" &&
 170                 try_case $N "$here/$N/wt" "$here/$N/.git" \
 171                         "$absgit" "$here/$N/wt" "$here/$N" "(null)"
 172         '
 173
 174         test_expect_success "#$N: explicit GIT_WORK_TREE from nephew of worktree" '
 175                 try_case $N/sub/sub "$here/$N/wt" ../../.git \
 176                         "$dotdotgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)" &&
 177                 try_case $N/sub/sub ../../wt ../../.git \
 178                         "$dotdotgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)" &&
 179                 try_case $N/sub/sub ../../wt "$here/$N/.git" \
 180                         "$absgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)" &&
 181                 try_case $N/sub/sub "$here/$N/wt" "$here/$N/.git" \
 182                         "$absgit" "$here/$N/wt" "$here/$N/sub/sub" "(null)"
 183         '
 184
 185         test_expect_success "#$N: chdir_to_toplevel uses worktree, not git dir" '
 186                 try_case $N "$here" .git \
 187                         "$absgit" "$here" "$here" $N/ &&
 188                 try_case $N .. .git \
 189                         "$absgit" "$here" "$here" $N/ &&
 190                 try_case $N .. "$here/$N/.git" \
 191                         "$absgit" "$here" "$here" $N/ &&
 192                 try_case $N "$here" "$here/$N/.git" \
 193                         "$absgit" "$here" "$here" $N/
 194         '
 195
 196         test_expect_success "#$N: chdir_to_toplevel uses worktree (from subdir)" '
 197                 try_case $N/sub/sub "$here" ../../.git \
 198                         "$absgit" "$here" "$here" $N/sub/sub/ &&
 199                 try_case $N/sub/sub ../../.. ../../.git \
 200                         "$absgit" "$here" "$here" $N/sub/sub/ &&
 201                 try_case $N/sub/sub ../../../ "$here/$N/.git" \
 202                         "$absgit" "$here" "$here" $N/sub/sub/ &&
 203                 try_case $N/sub/sub "$here" "$here/$N/.git" \
 204                         "$absgit" "$here" "$here" $N/sub/sub/
 205         '
 206 }
 207
 208 # try_repo #c GIT_WORK_TREE GIT_DIR core.worktree .gitfile? core.bare \
 209 #       (git dir) (work tree) (cwd) (prefix) \  <-- at toplevel
 210 #       (git dir) (work tree) (cwd) (prefix)    <-- from subdir
 211 try_repo () {
 212         name=$1 worktreeenv=$2 gitdirenv=$3 &&
 213         setup_repo "$name" "$4" "$5" "$6" &&
 214         shift 6 &&
 215         try_case "$name" "$worktreeenv" "$gitdirenv" \
 216                 "$1" "$2" "$3" "$4" &&
 217         shift 4 &&
 218         case "$gitdirenv" in
 219         /* | ?:/* | unset) ;;
 220         *)
 221                 gitdirenv=../$gitdirenv ;;
 222         esac &&
 223         try_case "$name/sub" "$worktreeenv" "$gitdirenv" \
 224                 "$1" "$2" "$3" "$4"
 225 }
 226
 227 # Bit 0 = GIT_WORK_TREE
 228 # Bit 1 = GIT_DIR
 229 # Bit 2 = core.worktree
 230 # Bit 3 = .git is a file
 231 # Bit 4 = bare repo
 232 # Case# = encoding of the above 5 bits
 233
 234 test_expect_success '#0: nonbare repo, no explicit configuration' '
 235         try_repo 0 unset unset unset "" unset \
 236                 .git "$here/0" "$here/0" "(null)" \
 237                 .git "$here/0" "$here/0" sub/ 2>message &&
 238         test_must_be_empty message
 239 '
 240
 241 test_expect_success '#1: GIT_WORK_TREE without explicit GIT_DIR is accepted' '
 242         try_repo 1 "$here" unset unset "" unset \
 243                 "$here/1/.git" "$here" "$here" 1/ \
 244                 "$here/1/.git" "$here" "$here" 1/sub/ 2>message &&
 245         test_must_be_empty message
 246 '
 247
 248 test_expect_success '#2: worktree defaults to cwd with explicit GIT_DIR' '
 249         try_repo 2 unset "$here/2/.git" unset "" unset \
 250                 "$here/2/.git" "$here/2" "$here/2" "(null)" \
 251                 "$here/2/.git" "$here/2/sub" "$here/2/sub" "(null)"
 252 '
 253
 254 test_expect_success '#2b: relative GIT_DIR' '
 255         try_repo 2b unset ".git" unset "" unset \
 256                 ".git" "$here/2b" "$here/2b" "(null)" \
 257                 "../.git" "$here/2b/sub" "$here/2b/sub" "(null)"
 258 '
 259
 260 test_expect_success '#3: setup' '
 261         setup_repo 3 unset "" unset &&
 262         mkdir -p 3/sub/sub 3/wt/sub
 263 '
 264 run_wt_tests 3
 265
 266 test_expect_success '#4: core.worktree without GIT_DIR set is accepted' '
 267         setup_repo 4 ../sub "" unset &&
 268         mkdir -p 4/sub sub &&
 269         try_case 4 unset unset \
 270                 .git "$here/4/sub" "$here/4" "(null)" \
 271                 "$here/4/.git" "$here/4/sub" "$here/4/sub" "(null)" 2>message &&
 272         test_must_be_empty message
 273 '
 274
 275 test_expect_success '#5: core.worktree + GIT_WORK_TREE is accepted' '
 276         # or: you cannot intimidate away the lack of GIT_DIR setting
 277         try_repo 5 "$here" unset "$here/5" "" unset \
 278                 "$here/5/.git" "$here" "$here" 5/ \
 279                 "$here/5/.git" "$here" "$here" 5/sub/ 2>message &&
 280         try_repo 5a .. unset "$here/5a" "" unset \
 281                 "$here/5a/.git" "$here" "$here" 5a/ \
 282                 "$here/5a/.git" "$here/5a" "$here/5a" sub/ &&
 283         test_must_be_empty message
 284 '
 285
 286 test_expect_success '#6: setting GIT_DIR brings core.worktree to life' '
 287         setup_repo 6 "$here/6" "" unset &&
 288         try_case 6 unset .git \
 289                 .git "$here/6" "$here/6" "(null)" &&
 290         try_case 6 unset "$here/6/.git" \
 291                 "$here/6/.git" "$here/6" "$here/6" "(null)" &&
 292         try_case 6/sub/sub unset ../../.git \
 293                 "$here/6/.git" "$here/6" "$here/6" sub/sub/ &&
 294         try_case 6/sub/sub unset "$here/6/.git" \
 295                 "$here/6/.git" "$here/6" "$here/6" sub/sub/
 296 '
 297
 298 test_expect_success '#6b: GIT_DIR set, core.worktree relative' '
 299         setup_repo 6b .. "" unset &&
 300         try_case 6b unset .git \
 301                 .git "$here/6b" "$here/6b" "(null)" &&
 302         try_case 6b unset "$here/6b/.git" \
 303                 "$here/6b/.git" "$here/6b" "$here/6b" "(null)" &&
 304         try_case 6b/sub/sub unset ../../.git \
 305                 "$here/6b/.git" "$here/6b" "$here/6b" sub/sub/ &&
 306         try_case 6b/sub/sub unset "$here/6b/.git" \
 307                 "$here/6b/.git" "$here/6b" "$here/6b" sub/sub/
 308 '
 309
 310 test_expect_success '#6c: GIT_DIR set, core.worktree=../wt (absolute)' '
 311         setup_repo 6c "$here/6c/wt" "" unset &&
 312         mkdir -p 6c/wt/sub &&
 313
 314         try_case 6c unset .git \
 315                 .git "$here/6c/wt" "$here/6c" "(null)" &&
 316         try_case 6c unset "$here/6c/.git" \
 317                 "$here/6c/.git" "$here/6c/wt" "$here/6c" "(null)" &&
 318         try_case 6c/sub/sub unset ../../.git \
 319                 ../../.git "$here/6c/wt" "$here/6c/sub/sub" "(null)" &&
 320         try_case 6c/sub/sub unset "$here/6c/.git" \
 321                 "$here/6c/.git" "$here/6c/wt" "$here/6c/sub/sub" "(null)"
 322 '
 323
 324 test_expect_success '#6d: GIT_DIR set, core.worktree=../wt (relative)' '
 325         setup_repo 6d "$here/6d/wt" "" unset &&
 326         mkdir -p 6d/wt/sub &&
 327
 328         try_case 6d unset .git \
 329                 .git "$here/6d/wt" "$here/6d" "(null)" &&
 330         try_case 6d unset "$here/6d/.git" \
 331                 "$here/6d/.git" "$here/6d/wt" "$here/6d" "(null)" &&
 332         try_case 6d/sub/sub unset ../../.git \
 333                 ../../.git "$here/6d/wt" "$here/6d/sub/sub" "(null)" &&
 334         try_case 6d/sub/sub unset "$here/6d/.git" \
 335                 "$here/6d/.git" "$here/6d/wt" "$here/6d/sub/sub" "(null)"
 336 '
 337
 338 test_expect_success '#6e: GIT_DIR set, core.worktree=../.. (absolute)' '
 339         setup_repo 6e "$here" "" unset &&
 340         try_case 6e unset .git \
 341                 "$here/6e/.git" "$here" "$here" 6e/ &&
 342         try_case 6e unset "$here/6e/.git" \
 343                 "$here/6e/.git" "$here" "$here" 6e/ &&
 344         try_case 6e/sub/sub unset ../../.git \
 345                 "$here/6e/.git" "$here" "$here" 6e/sub/sub/ &&
 346         try_case 6e/sub/sub unset "$here/6e/.git" \
 347                 "$here/6e/.git" "$here" "$here" 6e/sub/sub/
 348 '
 349
 350 test_expect_success '#6f: GIT_DIR set, core.worktree=../.. (relative)' '
 351         setup_repo 6f ../../ "" unset &&
 352         try_case 6f unset .git \
 353                 "$here/6f/.git" "$here" "$here" 6f/ &&
 354         try_case 6f unset "$here/6f/.git" \
 355                 "$here/6f/.git" "$here" "$here" 6f/ &&
 356         try_case 6f/sub/sub unset ../../.git \
 357                 "$here/6f/.git" "$here" "$here" 6f/sub/sub/ &&
 358         try_case 6f/sub/sub unset "$here/6f/.git" \
 359                 "$here/6f/.git" "$here" "$here" 6f/sub/sub/
 360 '
 361
 362 # case #7: GIT_WORK_TREE overrides core.worktree.
 363 test_expect_success '#7: setup' '
 364         setup_repo 7 non-existent "" unset &&
 365         mkdir -p 7/sub/sub 7/wt/sub
 366 '
 367 run_wt_tests 7
 368
 369 test_expect_success '#8: gitfile, easy case' '
 370         try_repo 8 unset unset unset gitfile unset \
 371                 "$here/8.git" "$here/8" "$here/8" "(null)" \
 372                 "$here/8.git" "$here/8" "$here/8" sub/
 373 '
 374
 375 test_expect_success '#9: GIT_WORK_TREE accepted with gitfile' '
 376         mkdir -p 9/wt &&
 377         try_repo 9 wt unset unset gitfile unset \
 378                 "$here/9.git" "$here/9/wt" "$here/9" "(null)" \
 379                 "$here/9.git" "$here/9/sub/wt" "$here/9/sub" "(null)" 2>message &&
 380         test_must_be_empty message
 381 '
 382
 383 test_expect_success '#10: GIT_DIR can point to gitfile' '
 384         try_repo 10 unset "$here/10/.git" unset gitfile unset \
 385                 "$here/10.git" "$here/10" "$here/10" "(null)" \
 386                 "$here/10.git" "$here/10/sub" "$here/10/sub" "(null)"
 387 '
 388
 389 test_expect_success '#10b: relative GIT_DIR can point to gitfile' '
 390         try_repo 10b unset .git unset gitfile unset \
 391                 "$here/10b.git" "$here/10b" "$here/10b" "(null)" \
 392                 "$here/10b.git" "$here/10b/sub" "$here/10b/sub" "(null)"
 393 '
 394
 395 # case #11: GIT_WORK_TREE works, gitfile case.
 396 test_expect_success '#11: setup' '
 397         setup_repo 11 unset gitfile unset &&
 398         mkdir -p 11/sub/sub 11/wt/sub
 399 '
 400 run_wt_tests 11 gitfile
 401
 402 test_expect_success '#12: core.worktree with gitfile is accepted' '
 403         try_repo 12 unset unset "$here/12" gitfile unset \
 404                 "$here/12.git" "$here/12" "$here/12" "(null)" \
 405                 "$here/12.git" "$here/12" "$here/12" sub/ 2>message &&
 406         test_must_be_empty message
 407 '
 408
 409 test_expect_success '#13: core.worktree+GIT_WORK_TREE accepted (with gitfile)' '
 410         # or: you cannot intimidate away the lack of GIT_DIR setting
 411         try_repo 13 non-existent-too unset non-existent gitfile unset \
 412                 "$here/13.git" "$here/13/non-existent-too" "$here/13" "(null)" \
 413                 "$here/13.git" "$here/13/sub/non-existent-too" "$here/13/sub" "(null)" 2>message &&
 414         test_must_be_empty message
 415 '
 416
 417 # case #14.
 418 # If this were more table-driven, it could share code with case #6.
 419
 420 test_expect_success '#14: core.worktree with GIT_DIR pointing to gitfile' '
 421         setup_repo 14 "$here/14" gitfile unset &&
 422         try_case 14 unset .git \
 423                 "$here/14.git" "$here/14" "$here/14" "(null)" &&
 424         try_case 14 unset "$here/14/.git" \
 425                 "$here/14.git" "$here/14" "$here/14" "(null)" &&
 426         try_case 14/sub/sub unset ../../.git \
 427                 "$here/14.git" "$here/14" "$here/14" sub/sub/ &&
 428         try_case 14/sub/sub unset "$here/14/.git" \
 429                 "$here/14.git" "$here/14" "$here/14" sub/sub/ &&
 430
 431         setup_repo 14c "$here/14c/wt" gitfile unset &&
 432         mkdir -p 14c/wt/sub &&
 433
 434         try_case 14c unset .git \
 435                 "$here/14c.git" "$here/14c/wt" "$here/14c" "(null)" &&
 436         try_case 14c unset "$here/14c/.git" \
 437                 "$here/14c.git" "$here/14c/wt" "$here/14c" "(null)" &&
 438         try_case 14c/sub/sub unset ../../.git \
 439                 "$here/14c.git" "$here/14c/wt" "$here/14c/sub/sub" "(null)" &&
 440         try_case 14c/sub/sub unset "$here/14c/.git" \
 441                 "$here/14c.git" "$here/14c/wt" "$here/14c/sub/sub" "(null)" &&
 442
 443         setup_repo 14d "$here/14d/wt" gitfile unset &&
 444         mkdir -p 14d/wt/sub &&
 445
 446         try_case 14d unset .git \
 447                 "$here/14d.git" "$here/14d/wt" "$here/14d" "(null)" &&
 448         try_case 14d unset "$here/14d/.git" \
 449                 "$here/14d.git" "$here/14d/wt" "$here/14d" "(null)" &&
 450         try_case 14d/sub/sub unset ../../.git \
 451                 "$here/14d.git" "$here/14d/wt" "$here/14d/sub/sub" "(null)" &&
 452         try_case 14d/sub/sub unset "$here/14d/.git" \
 453                 "$here/14d.git" "$here/14d/wt" "$here/14d/sub/sub" "(null)" &&
 454
 455         setup_repo 14e "$here" gitfile unset &&
 456         try_case 14e unset .git \
 457                 "$here/14e.git" "$here" "$here" 14e/ &&
 458         try_case 14e unset "$here/14e/.git" \
 459                 "$here/14e.git" "$here" "$here" 14e/ &&
 460         try_case 14e/sub/sub unset ../../.git \
 461                 "$here/14e.git" "$here" "$here" 14e/sub/sub/ &&
 462         try_case 14e/sub/sub unset "$here/14e/.git" \
 463                 "$here/14e.git" "$here" "$here" 14e/sub/sub/
 464 '
 465
 466 test_expect_success '#14b: core.worktree is relative to actual git dir' '
 467         setup_repo 14b ../14b gitfile unset &&
 468         try_case 14b unset .git \
 469                 "$here/14b.git" "$here/14b" "$here/14b" "(null)" &&
 470         try_case 14b unset "$here/14b/.git" \
 471                 "$here/14b.git" "$here/14b" "$here/14b" "(null)" &&
 472         try_case 14b/sub/sub unset ../../.git \
 473                 "$here/14b.git" "$here/14b" "$here/14b" sub/sub/ &&
 474         try_case 14b/sub/sub unset "$here/14b/.git" \
 475                 "$here/14b.git" "$here/14b" "$here/14b" sub/sub/ &&
 476
 477         setup_repo 14f ../ gitfile unset &&
 478         try_case 14f unset .git \
 479                 "$here/14f.git" "$here" "$here" 14f/ &&
 480         try_case 14f unset "$here/14f/.git" \
 481                 "$here/14f.git" "$here" "$here" 14f/ &&
 482         try_case 14f/sub/sub unset ../../.git \
 483                 "$here/14f.git" "$here" "$here" 14f/sub/sub/ &&
 484         try_case 14f/sub/sub unset "$here/14f/.git" \
 485                 "$here/14f.git" "$here" "$here" 14f/sub/sub/
 486 '
 487
 488 # case #15: GIT_WORK_TREE overrides core.worktree (gitfile case).
 489 test_expect_success '#15: setup' '
 490         setup_repo 15 non-existent gitfile unset &&
 491         mkdir -p 15/sub/sub 15/wt/sub
 492 '
 493 run_wt_tests 15 gitfile
 494
 495 test_expect_success '#16a: implicitly bare repo (cwd inside .git dir)' '
 496         setup_repo 16a unset "" unset &&
 497         mkdir -p 16a/.git/wt/sub &&
 498
 499         try_case 16a/.git unset unset \
 500                 . "(null)" "$here/16a/.git" "(null)" &&
 501         try_case 16a/.git/wt unset unset \
 502                 "$here/16a/.git" "(null)" "$here/16a/.git/wt" "(null)" &&
 503         try_case 16a/.git/wt/sub unset unset \
 504                 "$here/16a/.git" "(null)" "$here/16a/.git/wt/sub" "(null)"
 505 '
 506
 507 test_expect_success '#16b: bare .git (cwd inside .git dir)' '
 508         setup_repo 16b unset "" true &&
 509         mkdir -p 16b/.git/wt/sub &&
 510
 511         try_case 16b/.git unset unset \
 512                 . "(null)" "$here/16b/.git" "(null)" &&
 513         try_case 16b/.git/wt unset unset \
 514                 "$here/16b/.git" "(null)" "$here/16b/.git/wt" "(null)" &&
 515         try_case 16b/.git/wt/sub unset unset \
 516                 "$here/16b/.git" "(null)" "$here/16b/.git/wt/sub" "(null)"
 517 '
 518
 519 test_expect_success '#16c: bare .git has no worktree' '
 520         try_repo 16c unset unset unset "" true \
 521                 .git "(null)" "$here/16c" "(null)" \
 522                 "$here/16c/.git" "(null)" "$here/16c/sub" "(null)"
 523 '
 524
 525 test_expect_success '#16d: bareness preserved across alias' '
 526         setup_repo 16d unset "" unset &&
 527         (
 528                 cd 16d/.git &&
 529                 test_must_fail git status &&
 530                 git config alias.st status &&
 531                 test_must_fail git st
 532         )
 533 '
 534
 535 test_expect_success '#16e: bareness preserved by --bare' '
 536         setup_repo 16e unset "" unset &&
 537         (
 538                 cd 16e/.git &&
 539                 test_must_fail git status &&
 540                 test_must_fail git --bare status
 541         )
 542 '
 543
 544 test_expect_success '#17: GIT_WORK_TREE without explicit GIT_DIR is accepted (bare case)' '
 545         # Just like #16.
 546         setup_repo 17a unset "" true &&
 547         setup_repo 17b unset "" true &&
 548         mkdir -p 17a/.git/wt/sub &&
 549         mkdir -p 17b/.git/wt/sub &&
 550
 551         try_case 17a/.git "$here/17a" unset \
 552                 "$here/17a/.git" "$here/17a" "$here/17a" .git/ \
 553                 2>message &&
 554         try_case 17a/.git/wt "$here/17a" unset \
 555                 "$here/17a/.git" "$here/17a" "$here/17a" .git/wt/ &&
 556         try_case 17a/.git/wt/sub "$here/17a" unset \
 557                 "$here/17a/.git" "$here/17a" "$here/17a" .git/wt/sub/ &&
 558
 559         try_case 17b/.git "$here/17b" unset \
 560                 "$here/17b/.git" "$here/17b" "$here/17b" .git/ &&
 561         try_case 17b/.git/wt "$here/17b" unset \
 562                 "$here/17b/.git" "$here/17b" "$here/17b" .git/wt/ &&
 563         try_case 17b/.git/wt/sub "$here/17b" unset \
 564                 "$here/17b/.git" "$here/17b" "$here/17b" .git/wt/sub/ &&
 565
 566         try_repo 17c "$here/17c" unset unset "" true \
 567                 .git "$here/17c" "$here/17c" "(null)" \
 568                 "$here/17c/.git" "$here/17c" "$here/17c" sub/ 2>message &&
 569         test_must_be_empty message
 570 '
 571
 572 test_expect_success '#18: bare .git named by GIT_DIR has no worktree' '
 573         try_repo 18 unset .git unset "" true \
 574                 .git "(null)" "$here/18" "(null)" \
 575                 ../.git "(null)" "$here/18/sub" "(null)" &&
 576         try_repo 18b unset "$here/18b/.git" unset "" true \
 577                 "$here/18b/.git" "(null)" "$here/18b" "(null)" \
 578                 "$here/18b/.git" "(null)" "$here/18b/sub" "(null)"
 579 '
 580
 581 # Case #19: GIT_DIR + GIT_WORK_TREE suppresses bareness.
 582 test_expect_success '#19: setup' '
 583         setup_repo 19 unset "" true &&
 584         mkdir -p 19/sub/sub 19/wt/sub
 585 '
 586 run_wt_tests 19
 587
 588 test_expect_success '#20a: core.worktree without GIT_DIR accepted (inside .git)' '
 589         # Unlike case #16a.
 590         setup_repo 20a "$here/20a" "" unset &&
 591         mkdir -p 20a/.git/wt/sub &&
 592         try_case 20a/.git unset unset \
 593                 "$here/20a/.git" "$here/20a" "$here/20a" .git/ 2>message &&
 594         try_case 20a/.git/wt unset unset \
 595                 "$here/20a/.git" "$here/20a" "$here/20a" .git/wt/ &&
 596         try_case 20a/.git/wt/sub unset unset \
 597                 "$here/20a/.git" "$here/20a" "$here/20a" .git/wt/sub/ &&
 598         test_must_be_empty message
 599 '
 600
 601 test_expect_success '#20b/c: core.worktree and core.bare conflict' '
 602         setup_repo 20b non-existent "" true &&
 603         mkdir -p 20b/.git/wt/sub &&
 604         (
 605                 cd 20b/.git &&
 606                 test_must_fail git status >/dev/null
 607         ) 2>message &&
 608         grep "core.bare and core.worktree" message
 609 '
 610
 611 test_expect_success '#20d: core.worktree and core.bare OK when working tree not needed' '
 612         setup_repo 20d non-existent "" true &&
 613         mkdir -p 20d/.git/wt/sub &&
 614         (
 615                 cd 20d/.git &&
 616                 git config foo.bar value
 617         )
 618 '
 619
 620 # Case #21: core.worktree/GIT_WORK_TREE overrides core.bare' '
 621 test_expect_success '#21: setup, core.worktree warns before overriding core.bare' '
 622         setup_repo 21 non-existent "" unset &&
 623         mkdir -p 21/.git/wt/sub &&
 624         (
 625                 cd 21/.git &&
 626                 GIT_WORK_TREE="$here/21" &&
 627                 export GIT_WORK_TREE &&
 628                 git status >/dev/null
 629         ) 2>message &&
 630         test_must_be_empty message
 631
 632 '
 633 run_wt_tests 21
 634
 635 test_expect_success '#22a: core.worktree = GIT_DIR = .git dir' '
 636         # like case #6.
 637
 638         setup_repo 22a "$here/22a/.git" "" unset &&
 639         setup_repo 22ab . "" unset &&
 640         mkdir -p 22a/.git/sub 22a/sub &&
 641         mkdir -p 22ab/.git/sub 22ab/sub &&
 642         try_case 22a/.git unset . \
 643                 . "$here/22a/.git" "$here/22a/.git" "(null)" &&
 644         try_case 22a/.git unset "$here/22a/.git" \
 645                 "$here/22a/.git" "$here/22a/.git" "$here/22a/.git" "(null)" &&
 646         try_case 22a/.git/sub unset .. \
 647                 "$here/22a/.git" "$here/22a/.git" "$here/22a/.git" sub/ &&
 648         try_case 22a/.git/sub unset "$here/22a/.git" \
 649                 "$here/22a/.git" "$here/22a/.git" "$here/22a/.git" sub/ &&
 650
 651         try_case 22ab/.git unset . \
 652                 . "$here/22ab/.git" "$here/22ab/.git" "(null)" &&
 653         try_case 22ab/.git unset "$here/22ab/.git" \
 654                 "$here/22ab/.git" "$here/22ab/.git" "$here/22ab/.git" "(null)" &&
 655         try_case 22ab/.git/sub unset .. \
 656                 "$here/22ab/.git" "$here/22ab/.git" "$here/22ab/.git" sub/ &&
 657         try_case 22ab/.git unset "$here/22ab/.git" \
 658                 "$here/22ab/.git" "$here/22ab/.git" "$here/22ab/.git" "(null)"
 659 '
 660
 661 test_expect_success '#22b: core.worktree child of .git, GIT_DIR=.git' '
 662         setup_repo 22b "$here/22b/.git/wt" "" unset &&
 663         setup_repo 22bb wt "" unset &&
 664         mkdir -p 22b/.git/sub 22b/sub 22b/.git/wt/sub 22b/wt/sub &&
 665         mkdir -p 22bb/.git/sub 22bb/sub 22bb/.git/wt 22bb/wt &&
 666
 667         try_case 22b/.git unset . \
 668                 . "$here/22b/.git/wt" "$here/22b/.git" "(null)" &&
 669         try_case 22b/.git unset "$here/22b/.git" \
 670                 "$here/22b/.git" "$here/22b/.git/wt" "$here/22b/.git" "(null)" &&
 671         try_case 22b/.git/sub unset .. \
 672                 .. "$here/22b/.git/wt" "$here/22b/.git/sub" "(null)" &&
 673         try_case 22b/.git/sub unset "$here/22b/.git" \
 674                 "$here/22b/.git" "$here/22b/.git/wt" "$here/22b/.git/sub" "(null)" &&
 675
 676         try_case 22bb/.git unset . \
 677                 . "$here/22bb/.git/wt" "$here/22bb/.git" "(null)" &&
 678         try_case 22bb/.git unset "$here/22bb/.git" \
 679                 "$here/22bb/.git" "$here/22bb/.git/wt" "$here/22bb/.git" "(null)" &&
 680         try_case 22bb/.git/sub unset .. \
 681                 .. "$here/22bb/.git/wt" "$here/22bb/.git/sub" "(null)" &&
 682         try_case 22bb/.git/sub unset "$here/22bb/.git" \
 683                 "$here/22bb/.git" "$here/22bb/.git/wt" "$here/22bb/.git/sub" "(null)"
 684 '
 685
 686 test_expect_success '#22c: core.worktree = .git/.., GIT_DIR=.git' '
 687         setup_repo 22c "$here/22c" "" unset &&
 688         setup_repo 22cb .. "" unset &&
 689         mkdir -p 22c/.git/sub 22c/sub &&
 690         mkdir -p 22cb/.git/sub 22cb/sub &&
 691
 692         try_case 22c/.git unset . \
 693                 "$here/22c/.git" "$here/22c" "$here/22c" .git/ &&
 694         try_case 22c/.git unset "$here/22c/.git" \
 695                 "$here/22c/.git" "$here/22c" "$here/22c" .git/ &&
 696         try_case 22c/.git/sub unset .. \
 697                 "$here/22c/.git" "$here/22c" "$here/22c" .git/sub/ &&
 698         try_case 22c/.git/sub unset "$here/22c/.git" \
 699                 "$here/22c/.git" "$here/22c" "$here/22c" .git/sub/ &&
 700
 701         try_case 22cb/.git unset . \
 702                 "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/ &&
 703         try_case 22cb/.git unset "$here/22cb/.git" \
 704                 "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/ &&
 705         try_case 22cb/.git/sub unset .. \
 706                 "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/sub/ &&
 707         try_case 22cb/.git/sub unset "$here/22cb/.git" \
 708                 "$here/22cb/.git" "$here/22cb" "$here/22cb" .git/sub/
 709 '
 710
 711 test_expect_success '#22.2: core.worktree and core.bare conflict' '
 712         setup_repo 22 "$here/22" "" true &&
 713         (
 714                 cd 22/.git &&
 715                 GIT_DIR=. &&
 716                 export GIT_DIR &&
 717                 test_must_fail git status 2>result
 718         ) &&
 719         (
 720                 cd 22 &&
 721                 GIT_DIR=.git &&
 722                 export GIT_DIR &&
 723                 test_must_fail git status 2>result
 724         ) &&
 725         grep "core.bare and core.worktree" 22/.git/result &&
 726         grep "core.bare and core.worktree" 22/result
 727 '
 728
 729 # Case #23: GIT_DIR + GIT_WORK_TREE(+core.worktree) suppresses bareness.
 730 test_expect_success '#23: setup' '
 731         setup_repo 23 non-existent "" true &&
 732         mkdir -p 23/sub/sub 23/wt/sub
 733 '
 734 run_wt_tests 23
 735
 736 test_expect_success '#24: bare repo has no worktree (gitfile case)' '
 737         try_repo 24 unset unset unset gitfile true \
 738                 "$here/24.git" "(null)" "$here/24" "(null)" \
 739                 "$here/24.git" "(null)" "$here/24/sub" "(null)"
 740 '
 741
 742 test_expect_success '#25: GIT_WORK_TREE accepted if GIT_DIR unset (bare gitfile case)' '
 743         try_repo 25 "$here/25" unset unset gitfile true \
 744                 "$here/25.git" "$here/25" "$here/25" "(null)"  \
 745                 "$here/25.git" "$here/25" "$here/25" "sub/" 2>message &&
 746         test_must_be_empty message
 747 '
 748
 749 test_expect_success '#26: bare repo has no worktree (GIT_DIR -> gitfile case)' '
 750         try_repo 26 unset "$here/26/.git" unset gitfile true \
 751                 "$here/26.git" "(null)" "$here/26" "(null)" \
 752                 "$here/26.git" "(null)" "$here/26/sub" "(null)" &&
 753         try_repo 26b unset .git unset gitfile true \
 754                 "$here/26b.git" "(null)" "$here/26b" "(null)" \
 755                 "$here/26b.git" "(null)" "$here/26b/sub" "(null)"
 756 '
 757
 758 # Case #27: GIT_DIR + GIT_WORK_TREE suppresses bareness (with gitfile).
 759 test_expect_success '#27: setup' '
 760         setup_repo 27 unset gitfile true &&
 761         mkdir -p 27/sub/sub 27/wt/sub
 762 '
 763 run_wt_tests 27 gitfile
 764
 765 test_expect_success '#28: core.worktree and core.bare conflict (gitfile case)' '
 766         setup_repo 28 "$here/28" gitfile true &&
 767         (
 768                 cd 28 &&
 769                 test_must_fail git status
 770         ) 2>message &&
 771         grep "core.bare and core.worktree" message
 772 '
 773
 774 # Case #29: GIT_WORK_TREE(+core.worktree) overrides core.bare (gitfile case).
 775 test_expect_success '#29: setup' '
 776         setup_repo 29 non-existent gitfile true &&
 777         mkdir -p 29/sub/sub 29/wt/sub &&
 778         (
 779                 cd 29 &&
 780                 GIT_WORK_TREE="$here/29" &&
 781                 export GIT_WORK_TREE &&
 782                 git status
 783         ) 2>message &&
 784         test_must_be_empty message
 785 '
 786 run_wt_tests 29 gitfile
 787
 788 test_expect_success '#30: core.worktree and core.bare conflict (gitfile version)' '
 789         # Just like case #22.
 790         setup_repo 30 "$here/30" gitfile true &&
 791         (
 792                 cd 30 &&
 793                 test_must_fail env GIT_DIR=.git git status 2>result
 794         ) &&
 795         grep "core.bare and core.worktree" 30/result
 796 '
 797
 798 # Case #31: GIT_DIR + GIT_WORK_TREE(+core.worktree) suppresses
 799 # bareness (gitfile version).
 800 test_expect_success '#31: setup' '
 801         setup_repo 31 non-existent gitfile true &&
 802         mkdir -p 31/sub/sub 31/wt/sub
 803 '
 804 run_wt_tests 31 gitfile
 805
 806 test_done