t/test-lib.sh

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