t/test-lib.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Junio C Hamano
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see http://www.gnu.org/licenses/ .
  17
  18 # if --tee was passed, write the output not only to the terminal, but
  19 # additionally to the file test-results/$BASENAME.out, too.
  20 case "$GIT_TEST_TEE_STARTED, $* " in
  21 done,*)
  22         # do not redirect again
  23         ;;
  24 *' --tee '*|*' --va'*)
  25         mkdir -p test-results
  26         BASE=test-results/$(basename "$0" .sh)
  27         (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
  28          echo $? > $BASE.exit) | tee $BASE.out
  29         test "$(cat $BASE.exit)" = 0
  30         exit
  31         ;;
  32 esac
  33
  34 # Keep the original TERM for say_color
  35 ORIGINAL_TERM=$TERM
  36
  37 # For repeatability, reset the environment to known value.
  38 LANG=C
  39 LC_ALL=C
  40 PAGER=cat
  41 TZ=UTC
  42 TERM=dumb
  43 export LANG LC_ALL PAGER TERM TZ
  44 EDITOR=:
  45 unset VISUAL
  46 unset GIT_EDITOR
  47 unset AUTHOR_DATE
  48 unset AUTHOR_EMAIL
  49 unset AUTHOR_NAME
  50 unset COMMIT_AUTHOR_EMAIL
  51 unset COMMIT_AUTHOR_NAME
  52 unset EMAIL
  53 unset GIT_ALTERNATE_OBJECT_DIRECTORIES
  54 unset GIT_AUTHOR_DATE
  55 GIT_AUTHOR_EMAIL=author@example.com
  56 GIT_AUTHOR_NAME='A U Thor'
  57 unset GIT_COMMITTER_DATE
  58 GIT_COMMITTER_EMAIL=committer@example.com
  59 GIT_COMMITTER_NAME='C O Mitter'
  60 unset GIT_DIFF_OPTS
  61 unset GIT_DIR
  62 unset GIT_WORK_TREE
  63 unset GIT_EXTERNAL_DIFF
  64 unset GIT_INDEX_FILE
  65 unset GIT_OBJECT_DIRECTORY
  66 unset GIT_CEILING_DIRECTORIES
  67 unset SHA1_FILE_DIRECTORIES
  68 unset SHA1_FILE_DIRECTORY
  69 unset GIT_NOTES_REF
  70 unset GIT_NOTES_DISPLAY_REF
  71 unset GIT_NOTES_REWRITE_REF
  72 unset GIT_NOTES_REWRITE_MODE
  73 GIT_MERGE_VERBOSITY=5
  74 export GIT_MERGE_VERBOSITY
  75 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
  76 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
  77 export EDITOR
  78 GIT_TEST_CMP=${GIT_TEST_CMP:-diff -u}
  79
  80 # Protect ourselves from common misconfiguration to export
  81 # CDPATH into the environment
  82 unset CDPATH
  83
  84 unset GREP_OPTIONS
  85
  86 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
  87         1|2|true)
  88                 echo "* warning: Some tests will not work if GIT_TRACE" \
  89                         "is set as to trace on STDERR ! *"
  90                 echo "* warning: Please set GIT_TRACE to something" \
  91                         "other than 1, 2 or true ! *"
  92                 ;;
  93 esac
  94
  95 # Convenience
  96 #
  97 # A regexp to match 5 and 40 hexdigits
  98 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  99 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 100
 101 # Each test should start with something like this, after copyright notices:
 102 #
 103 # test_description='Description of this test...
 104 # This test checks if command xyzzy does the right thing...
 105 # '
 106 # . ./test-lib.sh
 107 [ "x$ORIGINAL_TERM" != "xdumb" ] && (
 108                 TERM=$ORIGINAL_TERM &&
 109                 export TERM &&
 110                 [ -t 1 ] &&
 111                 tput bold >/dev/null 2>&1 &&
 112                 tput setaf 1 >/dev/null 2>&1 &&
 113                 tput sgr0 >/dev/null 2>&1
 114         ) &&
 115         color=t
 116
 117 while test "$#" -ne 0
 118 do
 119         case "$1" in
 120         -d|--d|--de|--deb|--debu|--debug)
 121                 debug=t; shift ;;
 122         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 123                 immediate=t; shift ;;
 124         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 125                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 126         -h|--h|--he|--hel|--help)
 127                 help=t; shift ;;
 128         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 129                 verbose=t; shift ;;
 130         -q|--q|--qu|--qui|--quie|--quiet)
 131                 quiet=t; shift ;;
 132         --with-dashes)
 133                 with_dashes=t; shift ;;
 134         --no-color)
 135                 color=; shift ;;
 136         --no-python)
 137                 # noop now...
 138                 shift ;;
 139         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 140                 valgrind=t; verbose=t; shift ;;
 141         --tee)
 142                 shift ;; # was handled already
 143         --root=*)
 144                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 145                 shift ;;
 146         *)
 147                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 148         esac
 149 done
 150
 151 if test -n "$color"; then
 152         say_color () {
 153                 (
 154                 TERM=$ORIGINAL_TERM
 155                 export TERM
 156                 case "$1" in
 157                         error) tput bold; tput setaf 1;; # bold red
 158                         skip)  tput bold; tput setaf 2;; # bold green
 159                         pass)  tput setaf 2;;            # green
 160                         info)  tput setaf 3;;            # brown
 161                         *) test -n "$quiet" && return;;
 162                 esac
 163                 shift
 164                 printf "* %s" "$*"
 165                 tput sgr0
 166                 echo
 167                 )
 168         }
 169 else
 170         say_color() {
 171                 test -z "$1" && test -n "$quiet" && return
 172                 shift
 173                 echo "* $*"
 174         }
 175 fi
 176
 177 error () {
 178         say_color error "error: $*"
 179         GIT_EXIT_OK=t
 180         exit 1
 181 }
 182
 183 say () {
 184         say_color info "$*"
 185 }
 186
 187 test "${test_description}" != "" ||
 188 error "Test script did not set test_description."
 189
 190 if test "$help" = "t"
 191 then
 192         echo "$test_description"
 193         exit 0
 194 fi
 195
 196 exec 5>&1
 197 if test "$verbose" = "t"
 198 then
 199         exec 4>&2 3>&1
 200 else
 201         exec 4>/dev/null 3>/dev/null
 202 fi
 203
 204 test_failure=0
 205 test_count=0
 206 test_fixed=0
 207 test_broken=0
 208 test_success=0
 209
 210 die () {
 211         code=$?
 212         if test -n "$GIT_EXIT_OK"
 213         then
 214                 exit $code
 215         else
 216                 echo >&5 "FATAL: Unexpected exit with code $code"
 217                 exit 1
 218         fi
 219 }
 220
 221 GIT_EXIT_OK=
 222 trap 'die' EXIT
 223
 224 # The semantics of the editor variables are that of invoking
 225 # sh -c "$EDITOR \"$@\"" files ...
 226 #
 227 # If our trash directory contains shell metacharacters, they will be
 228 # interpreted if we just set $EDITOR directly, so do a little dance with
 229 # environment variables to work around this.
 230 #
 231 # In particular, quoting isn't enough, as the path may contain the same quote
 232 # that we're using.
 233 test_set_editor () {
 234         FAKE_EDITOR="$1"
 235         export FAKE_EDITOR
 236         EDITOR='"$FAKE_EDITOR"'
 237         export EDITOR
 238 }
 239
 240 test_decode_color () {
 241         sed     -e 's/.\[1m/<WHITE>/g' \
 242                 -e 's/.\[31m/<RED>/g' \
 243                 -e 's/.\[32m/<GREEN>/g' \
 244                 -e 's/.\[33m/<YELLOW>/g' \
 245                 -e 's/.\[34m/<BLUE>/g' \
 246                 -e 's/.\[35m/<MAGENTA>/g' \
 247                 -e 's/.\[36m/<CYAN>/g' \
 248                 -e 's/.\[m/<RESET>/g'
 249 }
 250
 251 q_to_nul () {
 252         perl -pe 'y/Q/\000/'
 253 }
 254
 255 q_to_cr () {
 256         tr Q '\015'
 257 }
 258
 259 append_cr () {
 260         sed -e 's/$/Q/' | tr Q '\015'
 261 }
 262
 263 remove_cr () {
 264         tr '\015' Q | sed -e 's/Q$//'
 265 }
 266
 267 test_tick () {
 268         if test -z "${test_tick+set}"
 269         then
 270                 test_tick=1112911993
 271         else
 272                 test_tick=$(($test_tick + 60))
 273         fi
 274         GIT_COMMITTER_DATE="$test_tick -0700"
 275         GIT_AUTHOR_DATE="$test_tick -0700"
 276         export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 277 }
 278
 279 # Call test_commit with the arguments "<message> [<file> [<contents>]]"
 280 #
 281 # This will commit a file with the given contents and the given commit
 282 # message.  It will also add a tag with <message> as name.
 283 #
 284 # Both <file> and <contents> default to <message>.
 285
 286 test_commit () {
 287         file=${2:-"$1.t"}
 288         echo "${3-$1}" > "$file" &&
 289         git add "$file" &&
 290         test_tick &&
 291         git commit -m "$1" &&
 292         git tag "$1"
 293 }
 294
 295 # Call test_merge with the arguments "<message> <commit>", where <commit>
 296 # can be a tag pointing to the commit-to-merge.
 297
 298 test_merge () {
 299         test_tick &&
 300         git merge -m "$1" "$2" &&
 301         git tag "$1"
 302 }
 303
 304 # This function helps systems where core.filemode=false is set.
 305 # Use it instead of plain 'chmod +x' to set or unset the executable bit
 306 # of a file in the working directory and add it to the index.
 307
 308 test_chmod () {
 309         chmod "$@" &&
 310         git update-index --add "--chmod=$@"
 311 }
 312
 313 # Use test_set_prereq to tell that a particular prerequisite is available.
 314 # The prerequisite can later be checked for in two ways:
 315 #
 316 # - Explicitly using test_have_prereq.
 317 #
 318 # - Implicitly by specifying the prerequisite tag in the calls to
 319 #   test_expect_{success,failure,code}.
 320 #
 321 # The single parameter is the prerequisite tag (a simple word, in all
 322 # capital letters by convention).
 323
 324 test_set_prereq () {
 325         satisfied="$satisfied$1 "
 326 }
 327 satisfied=" "
 328
 329 test_have_prereq () {
 330         case $satisfied in
 331         *" $1 "*)
 332                 : yes, have it ;;
 333         *)
 334                 ! : nope ;;
 335         esac
 336 }
 337
 338 # You are not expected to call test_ok_ and test_failure_ directly, use
 339 # the text_expect_* functions instead.
 340
 341 test_ok_ () {
 342         test_success=$(($test_success + 1))
 343         say_color "" "  ok $test_count: $@"
 344 }
 345
 346 test_failure_ () {
 347         test_failure=$(($test_failure + 1))
 348         say_color error "FAIL $test_count: $1"
 349         shift
 350         echo "$@" | sed -e 's/^/        /'
 351         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 352 }
 353
 354 test_known_broken_ok_ () {
 355         test_fixed=$(($test_fixed+1))
 356         say_color "" "  FIXED $test_count: $@"
 357 }
 358
 359 test_known_broken_failure_ () {
 360         test_broken=$(($test_broken+1))
 361         say_color skip "  still broken $test_count: $@"
 362 }
 363
 364 test_debug () {
 365         test "$debug" = "" || eval "$1"
 366 }
 367
 368 test_run_ () {
 369         test_cleanup=:
 370         eval >&3 2>&4 "$1"
 371         eval_ret=$?
 372         eval >&3 2>&4 "$test_cleanup"
 373         return 0
 374 }
 375
 376 test_skip () {
 377         test_count=$(($test_count+1))
 378         to_skip=
 379         for skp in $GIT_SKIP_TESTS
 380         do
 381                 case $this_test.$test_count in
 382                 $skp)
 383                         to_skip=t
 384                 esac
 385         done
 386         if test -z "$to_skip" && test -n "$prereq" &&
 387            ! test_have_prereq "$prereq"
 388         then
 389                 to_skip=t
 390         fi
 391         case "$to_skip" in
 392         t)
 393                 say_color skip >&3 "skipping test: $@"
 394                 say_color skip "skip $test_count: $1"
 395                 : true
 396                 ;;
 397         *)
 398                 false
 399                 ;;
 400         esac
 401 }
 402
 403 test_expect_failure () {
 404         test "$#" = 3 && { prereq=$1; shift; } || prereq=
 405         test "$#" = 2 ||
 406         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 407         if ! test_skip "$@"
 408         then
 409                 say >&3 "checking known breakage: $2"
 410                 test_run_ "$2"
 411                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 412                 then
 413                         test_known_broken_ok_ "$1"
 414                 else
 415                         test_known_broken_failure_ "$1"
 416                 fi
 417         fi
 418         echo >&3 ""
 419 }
 420
 421 test_expect_success () {
 422         test "$#" = 3 && { prereq=$1; shift; } || prereq=
 423         test "$#" = 2 ||
 424         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 425         if ! test_skip "$@"
 426         then
 427                 say >&3 "expecting success: $2"
 428                 test_run_ "$2"
 429                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 430                 then
 431                         test_ok_ "$1"
 432                 else
 433                         test_failure_ "$@"
 434                 fi
 435         fi
 436         echo >&3 ""
 437 }
 438
 439 test_expect_code () {
 440         test "$#" = 4 && { prereq=$1; shift; } || prereq=
 441         test "$#" = 3 ||
 442         error "bug in the test script: not 3 or 4 parameters to test-expect-code"
 443         if ! test_skip "$@"
 444         then
 445                 say >&3 "expecting exit code $1: $3"
 446                 test_run_ "$3"
 447                 if [ "$?" = 0 -a "$eval_ret" = "$1" ]
 448                 then
 449                         test_ok_ "$2"
 450                 else
 451                         test_failure_ "$@"
 452                 fi
 453         fi
 454         echo >&3 ""
 455 }
 456
 457 # test_external runs external test scripts that provide continuous
 458 # test output about their progress, and succeeds/fails on
 459 # zero/non-zero exit code.  It outputs the test output on stdout even
 460 # in non-verbose mode, and announces the external script with "* run
 461 # <n>: ..." before running it.  When providing relative paths, keep in
 462 # mind that all scripts run in "trash directory".
 463 # Usage: test_external description command arguments...
 464 # Example: test_external 'Perl API' perl ../path/to/test.pl
 465 test_external () {
 466         test "$#" = 4 && { prereq=$1; shift; } || prereq=
 467         test "$#" = 3 ||
 468         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 469         descr="$1"
 470         shift
 471         if ! test_skip "$descr" "$@"
 472         then
 473                 # Announce the script to reduce confusion about the
 474                 # test output that follows.
 475                 say_color "" " run $test_count: $descr ($*)"
 476                 # Run command; redirect its stderr to &4 as in
 477                 # test_run_, but keep its stdout on our stdout even in
 478                 # non-verbose mode.
 479                 "$@" 2>&4
 480                 if [ "$?" = 0 ]
 481                 then
 482                         test_ok_ "$descr"
 483                 else
 484                         test_failure_ "$descr" "$@"
 485                 fi
 486         fi
 487 }
 488
 489 # Like test_external, but in addition tests that the command generated
 490 # no output on stderr.
 491 test_external_without_stderr () {
 492         # The temporary file has no (and must have no) security
 493         # implications.
 494         tmp="$TMPDIR"; if [ -z "$tmp" ]; then tmp=/tmp; fi
 495         stderr="$tmp/git-external-stderr.$$.tmp"
 496         test_external "$@" 4> "$stderr"
 497         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 498         descr="no stderr: $1"
 499         shift
 500         say >&3 "expecting no stderr from previous command"
 501         if [ ! -s "$stderr" ]; then
 502                 rm "$stderr"
 503                 test_ok_ "$descr"
 504         else
 505                 if [ "$verbose" = t ]; then
 506                         output=`echo; echo Stderr is:; cat "$stderr"`
 507                 else
 508                         output=
 509                 fi
 510                 # rm first in case test_failure exits.
 511                 rm "$stderr"
 512                 test_failure_ "$descr" "$@" "$output"
 513         fi
 514 }
 515
 516 # This is not among top-level (test_expect_success | test_expect_failure)
 517 # but is a prefix that can be used in the test script, like:
 518 #
 519 #       test_expect_success 'complain and die' '
 520 #           do something &&
 521 #           do something else &&
 522 #           test_must_fail git checkout ../outerspace
 523 #       '
 524 #
 525 # Writing this as "! git checkout ../outerspace" is wrong, because
 526 # the failure could be due to a segv.  We want a controlled failure.
 527
 528 test_must_fail () {
 529         "$@"
 530         test $? -gt 0 -a $? -le 129 -o $? -gt 192
 531 }
 532
 533 # test_cmp is a helper function to compare actual and expected output.
 534 # You can use it like:
 535 #
 536 #       test_expect_success 'foo works' '
 537 #               echo expected >expected &&
 538 #               foo >actual &&
 539 #               test_cmp expected actual
 540 #       '
 541 #
 542 # This could be written as either "cmp" or "diff -u", but:
 543 # - cmp's output is not nearly as easy to read as diff -u
 544 # - not all diff versions understand "-u"
 545
 546 test_cmp() {
 547         $GIT_TEST_CMP "$@"
 548 }
 549
 550 # This function can be used to schedule some commands to be run
 551 # unconditionally at the end of the test to restore sanity:
 552 #
 553 #       test_expect_success 'test core.capslock' '
 554 #               git config core.capslock true &&
 555 #               test_when_finished "git config --unset core.capslock" &&
 556 #               hello world
 557 #       '
 558 #
 559 # That would be roughly equivalent to
 560 #
 561 #       test_expect_success 'test core.capslock' '
 562 #               git config core.capslock true &&
 563 #               hello world
 564 #               git config --unset core.capslock
 565 #       '
 566 #
 567 # except that the greeting and config --unset must both succeed for
 568 # the test to pass.
 569
 570 test_when_finished () {
 571         test_cleanup="{ $*
 572                 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 573 }
 574
 575 # Most tests can use the created repository, but some may need to create more.
 576 # Usage: test_create_repo <directory>
 577 test_create_repo () {
 578         test "$#" = 1 ||
 579         error "bug in the test script: not 1 parameter to test-create-repo"
 580         owd=`pwd`
 581         repo="$1"
 582         mkdir -p "$repo"
 583         cd "$repo" || error "Cannot setup test environment"
 584         "$GIT_EXEC_PATH/git-init" "--template=$TEST_DIRECTORY/../templates/blt/" >&3 2>&4 ||
 585         error "cannot run git init -- have you built things yet?"
 586         mv .git/hooks .git/hooks-disabled
 587         cd "$owd"
 588 }
 589
 590 test_done () {
 591         GIT_EXIT_OK=t
 592         test_results_dir="$TEST_DIRECTORY/test-results"
 593         mkdir -p "$test_results_dir"
 594         test_results_path="$test_results_dir/${0%.sh}-$$"
 595
 596         echo "total $test_count" >> $test_results_path
 597         echo "success $test_success" >> $test_results_path
 598         echo "fixed $test_fixed" >> $test_results_path
 599         echo "broken $test_broken" >> $test_results_path
 600         echo "failed $test_failure" >> $test_results_path
 601         echo "" >> $test_results_path
 602
 603         if test "$test_fixed" != 0
 604         then
 605                 say_color pass "fixed $test_fixed known breakage(s)"
 606         fi
 607         if test "$test_broken" != 0
 608         then
 609                 say_color error "still have $test_broken known breakage(s)"
 610                 msg="remaining $(($test_count-$test_broken)) test(s)"
 611         else
 612                 msg="$test_count test(s)"
 613         fi
 614         case "$test_failure" in
 615         0)
 616                 say_color pass "passed all $msg"
 617
 618                 test -d "$remove_trash" &&
 619                 cd "$(dirname "$remove_trash")" &&
 620                 rm -rf "$(basename "$remove_trash")"
 621
 622                 exit 0 ;;
 623
 624         *)
 625                 say_color error "failed $test_failure among $msg"
 626                 exit 1 ;;
 627
 628         esac
 629 }
 630
 631 # Test the binaries we have just built.  The tests are kept in
 632 # t/ subdirectory and are run in 'trash directory' subdirectory.
 633 TEST_DIRECTORY=$(pwd)
 634 if test -n "$valgrind"
 635 then
 636         make_symlink () {
 637                 test -h "$2" &&
 638                 test "$1" = "$(readlink "$2")" || {
 639                         # be super paranoid
 640                         if mkdir "$2".lock
 641                         then
 642                                 rm -f "$2" &&
 643                                 ln -s "$1" "$2" &&
 644                                 rm -r "$2".lock
 645                         else
 646                                 while test -d "$2".lock
 647                                 do
 648                                         say "Waiting for lock on $2."
 649                                         sleep 1
 650                                 done
 651                         fi
 652                 }
 653         }
 654
 655         make_valgrind_symlink () {
 656                 # handle only executables
 657                 test -x "$1" || return
 658
 659                 base=$(basename "$1")
 660                 symlink_target=$TEST_DIRECTORY/../$base
 661                 # do not override scripts
 662                 if test -x "$symlink_target" &&
 663                     test ! -d "$symlink_target" &&
 664                     test "#!" != "$(head -c 2 < "$symlink_target")"
 665                 then
 666                         symlink_target=../valgrind.sh
 667                 fi
 668                 case "$base" in
 669                 *.sh|*.perl)
 670                         symlink_target=../unprocessed-script
 671                 esac
 672                 # create the link, or replace it if it is out of date
 673                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 674         }
 675
 676         # override all git executables in TEST_DIRECTORY/..
 677         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 678         mkdir -p "$GIT_VALGRIND"/bin
 679         for file in $TEST_DIRECTORY/../git* $TEST_DIRECTORY/../test-*
 680         do
 681                 make_valgrind_symlink $file
 682         done
 683         OLDIFS=$IFS
 684         IFS=:
 685         for path in $PATH
 686         do
 687                 ls "$path"/git-* 2> /dev/null |
 688                 while read file
 689                 do
 690                         make_valgrind_symlink "$file"
 691                 done
 692         done
 693         IFS=$OLDIFS
 694         PATH=$GIT_VALGRIND/bin:$PATH
 695         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 696         export GIT_VALGRIND
 697 elif test -n "$GIT_TEST_INSTALLED" ; then
 698         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 699         error "Cannot run git from $GIT_TEST_INSTALLED."
 700         PATH=$GIT_TEST_INSTALLED:$TEST_DIRECTORY/..:$PATH
 701         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 702 else # normal case, use ../bin-wrappers only unless $with_dashes:
 703         git_bin_dir="$TEST_DIRECTORY/../bin-wrappers"
 704         if ! test -x "$git_bin_dir/git" ; then
 705                 if test -z "$with_dashes" ; then
 706                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 707                 fi
 708                 with_dashes=t
 709         fi
 710         PATH="$git_bin_dir:$PATH"
 711         GIT_EXEC_PATH=$TEST_DIRECTORY/..
 712         if test -n "$with_dashes" ; then
 713                 PATH="$TEST_DIRECTORY/..:$PATH"
 714         fi
 715 fi
 716 GIT_TEMPLATE_DIR=$(pwd)/../templates/blt
 717 unset GIT_CONFIG
 718 GIT_CONFIG_NOSYSTEM=1
 719 GIT_CONFIG_NOGLOBAL=1
 720 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_CONFIG_NOGLOBAL
 721
 722 . ../GIT-BUILD-OPTIONS
 723
 724 GITPERLLIB=$(pwd)/../perl/blib/lib:$(pwd)/../perl/blib/arch/auto/Git
 725 export GITPERLLIB
 726 test -d ../templates/blt || {
 727         error "You haven't built things yet, have you?"
 728 }
 729
 730 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 731 then
 732         GITPYTHONLIB="$(pwd)/../git_remote_helpers/build/lib"
 733         export GITPYTHONLIB
 734         test -d ../git_remote_helpers/build || {
 735                 error "You haven't built git_remote_helpers yet, have you?"
 736         }
 737 fi
 738
 739 if ! test -x ../test-chmtime; then
 740         echo >&2 'You need to build test-chmtime:'
 741         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 742         exit 1
 743 fi
 744
 745 # Test repository
 746 test="trash directory.$(basename "$0" .sh)"
 747 test -n "$root" && test="$root/$test"
 748 case "$test" in
 749 /*) TRASH_DIRECTORY="$test" ;;
 750  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
 751 esac
 752 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 753 rm -fr "$test" || {
 754         GIT_EXIT_OK=t
 755         echo >&5 "FATAL: Cannot prepare test area"
 756         exit 1
 757 }
 758
 759 test_create_repo "$test"
 760 # Use -P to resolve symlinks in our working directory so that the cwd
 761 # in subprocesses like git equals our $PWD (for pathname comparisons).
 762 cd -P "$test" || exit 1
 763
 764 this_test=${0##*/}
 765 this_test=${this_test%%-*}
 766 for skp in $GIT_SKIP_TESTS
 767 do
 768         to_skip=
 769         for skp in $GIT_SKIP_TESTS
 770         do
 771                 case "$this_test" in
 772                 $skp)
 773                         to_skip=t
 774                 esac
 775         done
 776         case "$to_skip" in
 777         t)
 778                 say_color skip >&3 "skipping test $this_test altogether"
 779                 say_color skip "skip all tests in $this_test"
 780                 test_done
 781         esac
 782 done
 783
 784 # Provide an implementation of the 'yes' utility
 785 yes () {
 786         if test $# = 0
 787         then
 788                 y=y
 789         else
 790                 y="$*"
 791         fi
 792
 793         while echo "$y"
 794         do
 795                 :
 796         done
 797 }
 798
 799 # Fix some commands on Windows
 800 case $(uname -s) in
 801 *MINGW*)
 802         # Windows has its own (incompatible) sort and find
 803         sort () {
 804                 /usr/bin/sort "$@"
 805         }
 806         find () {
 807                 /usr/bin/find "$@"
 808         }
 809         sum () {
 810                 md5sum "$@"
 811         }
 812         # git sees Windows-style pwd
 813         pwd () {
 814                 builtin pwd -W
 815         }
 816         # no POSIX permissions
 817         # backslashes in pathspec are converted to '/'
 818         # exec does not inherit the PID
 819         ;;
 820 *)
 821         test_set_prereq POSIXPERM
 822         test_set_prereq BSLASHPSPEC
 823         test_set_prereq EXECKEEPSPID
 824         ;;
 825 esac
 826
 827 test -z "$NO_PERL" && test_set_prereq PERL
 828 test -z "$NO_PYTHON" && test_set_prereq PYTHON
 829
 830 # test whether the filesystem supports symbolic links
 831 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
 832 rm -f y