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 unset 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
  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 "$1" in
  96         -d|--d|--de|--deb|--debu|--debug)
  97                 debug=t; shift ;;
  98         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
  99                 immediate=t; shift ;;
 100         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 101                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 102         -h|--h|--he|--hel|--help)
 103                 help=t; shift ;;
 104         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 105                 verbose=t; shift ;;
 106         -q|--q|--qu|--qui|--quie|--quiet)
 107                 quiet=t; shift ;;
 108         --no-color)
 109                 color=; shift ;;
 110         --no-python)
 111                 # noop now...
 112                 shift ;;
 113         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 114                 valgrind=t; verbose=t; shift ;;
 115         --tee)
 116                 shift ;; # was handled already
 117         --root=*)
 118                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 119                 shift ;;
 120         *)
 121                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 122         esac
 123 done
 124
 125 if test -n "$color"; then
 126         say_color () {
 127                 (
 128                 TERM=$ORIGINAL_TERM
 129                 export TERM
 130                 case "$1" in
 131                         error) tput bold; tput setaf 1;; # bold red
 132                         skip)  tput bold; tput setaf 2;; # bold green
 133                         pass)  tput setaf 2;;            # green
 134                         info)  tput setaf 3;;            # brown
 135                         *) test -n "$quiet" && return;;
 136                 esac
 137                 shift
 138                 printf "* %s" "$*"
 139                 tput sgr0
 140                 echo
 141                 )
 142         }
 143 else
 144         say_color() {
 145                 test -z "$1" && test -n "$quiet" && return
 146                 shift
 147                 echo "* $*"
 148         }
 149 fi
 150
 151 error () {
 152         say_color error "error: $*"
 153         GIT_EXIT_OK=t
 154         exit 1
 155 }
 156
 157 say () {
 158         say_color info "$*"
 159 }
 160
 161 test "${test_description}" != "" ||
 162 error "Test script did not set test_description."
 163
 164 if test "$help" = "t"
 165 then
 166         echo "$test_description"
 167         exit 0
 168 fi
 169
 170 exec 5>&1
 171 if test "$verbose" = "t"
 172 then
 173         exec 4>&2 3>&1
 174 else
 175         exec 4>/dev/null 3>/dev/null
 176 fi
 177
 178 test_failure=0
 179 test_count=0
 180 test_fixed=0
 181 test_broken=0
 182 test_success=0
 183
 184 die () {
 185         code=$?
 186         if test -n "$GIT_EXIT_OK"
 187         then
 188                 exit $code
 189         else
 190                 echo >&5 "FATAL: Unexpected exit with code $code"
 191                 exit 1
 192         fi
 193 }
 194
 195 GIT_EXIT_OK=
 196 trap 'die' EXIT
 197
 198 # The semantics of the editor variables are that of invoking
 199 # sh -c "$EDITOR \"$@\"" files ...
 200 #
 201 # If our trash directory contains shell metacharacters, they will be
 202 # interpreted if we just set $EDITOR directly, so do a little dance with
 203 # environment variables to work around this.
 204 #
 205 # In particular, quoting isn't enough, as the path may contain the same quote
 206 # that we're using.
 207 test_set_editor () {
 208         FAKE_EDITOR="$1"
 209         export FAKE_EDITOR
 210         EDITOR='"$FAKE_EDITOR"'
 211         export EDITOR
 212 }
 213
 214 test_decode_color () {
 215         sed     -e 's/.\[1m/<WHITE>/g' \
 216                 -e 's/.\[31m/<RED>/g' \
 217                 -e 's/.\[32m/<GREEN>/g' \
 218                 -e 's/.\[33m/<YELLOW>/g' \
 219                 -e 's/.\[34m/<BLUE>/g' \
 220                 -e 's/.\[35m/<MAGENTA>/g' \
 221                 -e 's/.\[36m/<CYAN>/g' \
 222                 -e 's/.\[m/<RESET>/g'
 223 }
 224
 225 test_tick () {
 226         if test -z "${test_tick+set}"
 227         then
 228                 test_tick=1112911993
 229         else
 230                 test_tick=$(($test_tick + 60))
 231         fi
 232         GIT_COMMITTER_DATE="$test_tick -0700"
 233         GIT_AUTHOR_DATE="$test_tick -0700"
 234         export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 235 }
 236
 237 # Call test_commit with the arguments "<message> [<file> [<contents>]]"
 238 #
 239 # This will commit a file with the given contents and the given commit
 240 # message.  It will also add a tag with <message> as name.
 241 #
 242 # Both <file> and <contents> default to <message>.
 243
 244 test_commit () {
 245         file=${2:-"$1.t"}
 246         echo "${3-$1}" > "$file" &&
 247         git add "$file" &&
 248         test_tick &&
 249         git commit -m "$1" &&
 250         git tag "$1"
 251 }
 252
 253 # Call test_merge with the arguments "<message> <commit>", where <commit>
 254 # can be a tag pointing to the commit-to-merge.
 255
 256 test_merge () {
 257         test_tick &&
 258         git merge -m "$1" "$2" &&
 259         git tag "$1"
 260 }
 261
 262 # This function helps systems where core.filemode=false is set.
 263 # Use it instead of plain 'chmod +x' to set or unset the executable bit
 264 # of a file in the working directory and add it to the index.
 265
 266 test_chmod () {
 267         chmod "$@" &&
 268         git update-index --add "--chmod=$@"
 269 }
 270
 271 # Use test_set_prereq to tell that a particular prerequisite is available.
 272 # The prerequisite can later be checked for in two ways:
 273 #
 274 # - Explicitly using test_have_prereq.
 275 #
 276 # - Implicitly by specifying the prerequisite tag in the calls to
 277 #   test_expect_{success,failure,code}.
 278 #
 279 # The single parameter is the prerequisite tag (a simple word, in all
 280 # capital letters by convention).
 281
 282 test_set_prereq () {
 283         satisfied="$satisfied$1 "
 284 }
 285 satisfied=" "
 286
 287 test_have_prereq () {
 288         case $satisfied in
 289         *" $1 "*)
 290                 : yes, have it ;;
 291         *)
 292                 ! : nope ;;
 293         esac
 294 }
 295
 296 # You are not expected to call test_ok_ and test_failure_ directly, use
 297 # the text_expect_* functions instead.
 298
 299 test_ok_ () {
 300         test_success=$(($test_success + 1))
 301         say_color "" "  ok $test_count: $@"
 302 }
 303
 304 test_failure_ () {
 305         test_failure=$(($test_failure + 1))
 306         say_color error "FAIL $test_count: $1"
 307         shift
 308         echo "$@" | sed -e 's/^/        /'
 309         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 310 }
 311
 312 test_known_broken_ok_ () {
 313         test_fixed=$(($test_fixed+1))
 314         say_color "" "  FIXED $test_count: $@"
 315 }
 316
 317 test_known_broken_failure_ () {
 318         test_broken=$(($test_broken+1))
 319         say_color skip "  still broken $test_count: $@"
 320 }
 321
 322 test_debug () {
 323         test "$debug" = "" || eval "$1"
 324 }
 325
 326 test_run_ () {
 327         eval >&3 2>&4 "$1"
 328         eval_ret="$?"
 329         return 0
 330 }
 331
 332 test_skip () {
 333         test_count=$(($test_count+1))
 334         to_skip=
 335         for skp in $GIT_SKIP_TESTS
 336         do
 337                 case $this_test.$test_count in
 338                 $skp)
 339                         to_skip=t
 340                 esac
 341         done
 342         if test -z "$to_skip" && test -n "$prereq" &&
 343            ! test_have_prereq "$prereq"
 344         then
 345                 to_skip=t
 346         fi
 347         case "$to_skip" in
 348         t)
 349                 say_color skip >&3 "skipping test: $@"
 350                 say_color skip "skip $test_count: $1"
 351                 : true
 352                 ;;
 353         *)
 354                 false
 355                 ;;
 356         esac
 357 }
 358
 359 test_expect_failure () {
 360         test "$#" = 3 && { prereq=$1; shift; } || prereq=
 361         test "$#" = 2 ||
 362         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 363         if ! test_skip "$@"
 364         then
 365                 say >&3 "checking known breakage: $2"
 366                 test_run_ "$2"
 367                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 368                 then
 369                         test_known_broken_ok_ "$1"
 370                 else
 371                         test_known_broken_failure_ "$1"
 372                 fi
 373         fi
 374         echo >&3 ""
 375 }
 376
 377 test_expect_success () {
 378         test "$#" = 3 && { prereq=$1; shift; } || prereq=
 379         test "$#" = 2 ||
 380         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 381         if ! test_skip "$@"
 382         then
 383                 say >&3 "expecting success: $2"
 384                 test_run_ "$2"
 385                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 386                 then
 387                         test_ok_ "$1"
 388                 else
 389                         test_failure_ "$@"
 390                 fi
 391         fi
 392         echo >&3 ""
 393 }
 394
 395 test_expect_code () {
 396         test "$#" = 4 && { prereq=$1; shift; } || prereq=
 397         test "$#" = 3 ||
 398         error "bug in the test script: not 3 or 4 parameters to test-expect-code"
 399         if ! test_skip "$@"
 400         then
 401                 say >&3 "expecting exit code $1: $3"
 402                 test_run_ "$3"
 403                 if [ "$?" = 0 -a "$eval_ret" = "$1" ]
 404                 then
 405                         test_ok_ "$2"
 406                 else
 407                         test_failure_ "$@"
 408                 fi
 409         fi
 410         echo >&3 ""
 411 }
 412
 413 # test_external runs external test scripts that provide continuous
 414 # test output about their progress, and succeeds/fails on
 415 # zero/non-zero exit code.  It outputs the test output on stdout even
 416 # in non-verbose mode, and announces the external script with "* run
 417 # <n>: ..." before running it.  When providing relative paths, keep in
 418 # mind that all scripts run in "trash directory".
 419 # Usage: test_external description command arguments...
 420 # Example: test_external 'Perl API' perl ../path/to/test.pl
 421 test_external () {
 422         test "$#" = 4 && { prereq=$1; shift; } || prereq=
 423         test "$#" = 3 ||
 424         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 425         descr="$1"
 426         shift
 427         if ! test_skip "$descr" "$@"
 428         then
 429                 # Announce the script to reduce confusion about the
 430                 # test output that follows.
 431                 say_color "" " run $test_count: $descr ($*)"
 432                 # Run command; redirect its stderr to &4 as in
 433                 # test_run_, but keep its stdout on our stdout even in
 434                 # non-verbose mode.
 435                 "$@" 2>&4
 436                 if [ "$?" = 0 ]
 437                 then
 438                         test_ok_ "$descr"
 439                 else
 440                         test_failure_ "$descr" "$@"
 441                 fi
 442         fi
 443 }
 444
 445 # Like test_external, but in addition tests that the command generated
 446 # no output on stderr.
 447 test_external_without_stderr () {
 448         # The temporary file has no (and must have no) security
 449         # implications.
 450         tmp="$TMPDIR"; if [ -z "$tmp" ]; then tmp=/tmp; fi
 451         stderr="$tmp/git-external-stderr.$$.tmp"
 452         test_external "$@" 4> "$stderr"
 453         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 454         descr="no stderr: $1"
 455         shift
 456         say >&3 "expecting no stderr from previous command"
 457         if [ ! -s "$stderr" ]; then
 458                 rm "$stderr"
 459                 test_ok_ "$descr"
 460         else
 461                 if [ "$verbose" = t ]; then
 462                         output=`echo; echo Stderr is:; cat "$stderr"`
 463                 else
 464                         output=
 465                 fi
 466                 # rm first in case test_failure exits.
 467                 rm "$stderr"
 468                 test_failure_ "$descr" "$@" "$output"
 469         fi
 470 }
 471
 472 # This is not among top-level (test_expect_success | test_expect_failure)
 473 # but is a prefix that can be used in the test script, like:
 474 #
 475 #       test_expect_success 'complain and die' '
 476 #           do something &&
 477 #           do something else &&
 478 #           test_must_fail git checkout ../outerspace
 479 #       '
 480 #
 481 # Writing this as "! git checkout ../outerspace" is wrong, because
 482 # the failure could be due to a segv.  We want a controlled failure.
 483
 484 test_must_fail () {
 485         "$@"
 486         test $? -gt 0 -a $? -le 129 -o $? -gt 192
 487 }
 488
 489 # test_cmp is a helper function to compare actual and expected output.
 490 # You can use it like:
 491 #
 492 #       test_expect_success 'foo works' '
 493 #               echo expected >expected &&
 494 #               foo >actual &&
 495 #               test_cmp expected actual
 496 #       '
 497 #
 498 # This could be written as either "cmp" or "diff -u", but:
 499 # - cmp's output is not nearly as easy to read as diff -u
 500 # - not all diff versions understand "-u"
 501
 502 test_cmp() {
 503         $GIT_TEST_CMP "$@"
 504 }
 505
 506 # Most tests can use the created repository, but some may need to create more.
 507 # Usage: test_create_repo <directory>
 508 test_create_repo () {
 509         test "$#" = 1 ||
 510         error "bug in the test script: not 1 parameter to test-create-repo"
 511         owd=`pwd`
 512         repo="$1"
 513         mkdir -p "$repo"
 514         cd "$repo" || error "Cannot setup test environment"
 515         "$GIT_EXEC_PATH/git-init" "--template=$TEST_DIRECTORY/../templates/blt/" >&3 2>&4 ||
 516         error "cannot run git init -- have you built things yet?"
 517         mv .git/hooks .git/hooks-disabled
 518         cd "$owd"
 519 }
 520
 521 test_done () {
 522         GIT_EXIT_OK=t
 523         test_results_dir="$TEST_DIRECTORY/test-results"
 524         mkdir -p "$test_results_dir"
 525         test_results_path="$test_results_dir/${0%.sh}-$$"
 526
 527         echo "total $test_count" >> $test_results_path
 528         echo "success $test_success" >> $test_results_path
 529         echo "fixed $test_fixed" >> $test_results_path
 530         echo "broken $test_broken" >> $test_results_path
 531         echo "failed $test_failure" >> $test_results_path
 532         echo "" >> $test_results_path
 533
 534         if test "$test_fixed" != 0
 535         then
 536                 say_color pass "fixed $test_fixed known breakage(s)"
 537         fi
 538         if test "$test_broken" != 0
 539         then
 540                 say_color error "still have $test_broken known breakage(s)"
 541                 msg="remaining $(($test_count-$test_broken)) test(s)"
 542         else
 543                 msg="$test_count test(s)"
 544         fi
 545         case "$test_failure" in
 546         0)
 547                 say_color pass "passed all $msg"
 548
 549                 test -d "$remove_trash" &&
 550                 cd "$(dirname "$remove_trash")" &&
 551                 rm -rf "$(basename "$remove_trash")"
 552
 553                 exit 0 ;;
 554
 555         *)
 556                 say_color error "failed $test_failure among $msg"
 557                 exit 1 ;;
 558
 559         esac
 560 }
 561
 562 # Test the binaries we have just built.  The tests are kept in
 563 # t/ subdirectory and are run in 'trash directory' subdirectory.
 564 TEST_DIRECTORY=$(pwd)
 565 if test -z "$valgrind"
 566 then
 567         if test -z "$GIT_TEST_INSTALLED"
 568         then
 569                 PATH=$TEST_DIRECTORY/..:$PATH
 570                 GIT_EXEC_PATH=$TEST_DIRECTORY/..
 571         else
 572                 GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 573                 error "Cannot run git from $GIT_TEST_INSTALLED."
 574                 PATH=$GIT_TEST_INSTALLED:$TEST_DIRECTORY/..:$PATH
 575                 GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 576         fi
 577 else
 578         make_symlink () {
 579                 test -h "$2" &&
 580                 test "$1" = "$(readlink "$2")" || {
 581                         # be super paranoid
 582                         if mkdir "$2".lock
 583                         then
 584                                 rm -f "$2" &&
 585                                 ln -s "$1" "$2" &&
 586                                 rm -r "$2".lock
 587                         else
 588                                 while test -d "$2".lock
 589                                 do
 590                                         say "Waiting for lock on $2."
 591                                         sleep 1
 592                                 done
 593                         fi
 594                 }
 595         }
 596
 597         make_valgrind_symlink () {
 598                 # handle only executables
 599                 test -x "$1" || return
 600
 601                 base=$(basename "$1")
 602                 symlink_target=$TEST_DIRECTORY/../$base
 603                 # do not override scripts
 604                 if test -x "$symlink_target" &&
 605                     test ! -d "$symlink_target" &&
 606                     test "#!" != "$(head -c 2 < "$symlink_target")"
 607                 then
 608                         symlink_target=../valgrind.sh
 609                 fi
 610                 case "$base" in
 611                 *.sh|*.perl)
 612                         symlink_target=../unprocessed-script
 613                 esac
 614                 # create the link, or replace it if it is out of date
 615                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 616         }
 617
 618         # override all git executables in TEST_DIRECTORY/..
 619         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 620         mkdir -p "$GIT_VALGRIND"/bin
 621         for file in $TEST_DIRECTORY/../git* $TEST_DIRECTORY/../test-*
 622         do
 623                 make_valgrind_symlink $file
 624         done
 625         OLDIFS=$IFS
 626         IFS=:
 627         for path in $PATH
 628         do
 629                 ls "$path"/git-* 2> /dev/null |
 630                 while read file
 631                 do
 632                         make_valgrind_symlink "$file"
 633                 done
 634         done
 635         IFS=$OLDIFS
 636         PATH=$GIT_VALGRIND/bin:$PATH
 637         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 638         export GIT_VALGRIND
 639 fi
 640 GIT_TEMPLATE_DIR=$(pwd)/../templates/blt
 641 unset GIT_CONFIG
 642 GIT_CONFIG_NOSYSTEM=1
 643 GIT_CONFIG_NOGLOBAL=1
 644 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_CONFIG_NOGLOBAL
 645
 646 . ../GIT-BUILD-OPTIONS
 647
 648 GITPERLLIB=$(pwd)/../perl/blib/lib:$(pwd)/../perl/blib/arch/auto/Git
 649 export GITPERLLIB
 650 test -d ../templates/blt || {
 651         error "You haven't built things yet, have you?"
 652 }
 653
 654 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 655 then
 656         GITPYTHONLIB="$(pwd)/../git_remote_helpers/build/lib"
 657         export GITPYTHONLIB
 658         test -d ../git_remote_helpers/build || {
 659                 error "You haven't built git_remote_helpers yet, have you?"
 660         }
 661 fi
 662
 663 if ! test -x ../test-chmtime; then
 664         echo >&2 'You need to build test-chmtime:'
 665         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 666         exit 1
 667 fi
 668
 669 # Test repository
 670 test="trash directory.$(basename "$0" .sh)"
 671 test -n "$root" && test="$root/$test"
 672 case "$test" in
 673 /*) TRASH_DIRECTORY="$test" ;;
 674  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
 675 esac
 676 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 677 rm -fr "$test" || {
 678         GIT_EXIT_OK=t
 679         echo >&5 "FATAL: Cannot prepare test area"
 680         exit 1
 681 }
 682
 683 test_create_repo "$test"
 684 # Use -P to resolve symlinks in our working directory so that the cwd
 685 # in subprocesses like git equals our $PWD (for pathname comparisons).
 686 cd -P "$test" || exit 1
 687
 688 this_test=${0##*/}
 689 this_test=${this_test%%-*}
 690 for skp in $GIT_SKIP_TESTS
 691 do
 692         to_skip=
 693         for skp in $GIT_SKIP_TESTS
 694         do
 695                 case "$this_test" in
 696                 $skp)
 697                         to_skip=t
 698                 esac
 699         done
 700         case "$to_skip" in
 701         t)
 702                 say_color skip >&3 "skipping test $this_test altogether"
 703                 say_color skip "skip all tests in $this_test"
 704                 test_done
 705         esac
 706 done
 707
 708 # Provide an implementation of the 'yes' utility
 709 yes () {
 710         if test $# = 0
 711         then
 712                 y=y
 713         else
 714                 y="$*"
 715         fi
 716
 717         while echo "$y"
 718         do
 719                 :
 720         done
 721 }
 722
 723 # Fix some commands on Windows
 724 case $(uname -s) in
 725 *MINGW*)
 726         # Windows has its own (incompatible) sort and find
 727         sort () {
 728                 /usr/bin/sort "$@"
 729         }
 730         find () {
 731                 /usr/bin/find "$@"
 732         }
 733         sum () {
 734                 md5sum "$@"
 735         }
 736         # git sees Windows-style pwd
 737         pwd () {
 738                 builtin pwd -W
 739         }
 740         # no POSIX permissions
 741         # backslashes in pathspec are converted to '/'
 742         # exec does not inherit the PID
 743         ;;
 744 *)
 745         test_set_prereq POSIXPERM
 746         test_set_prereq BSLASHPSPEC
 747         test_set_prereq EXECKEEPSPID
 748         ;;
 749 esac
 750
 751 test -z "$NO_PERL" && test_set_prereq PERL
 752 test -z "$NO_PYTHON" && test_set_prereq PYTHON
 753
 754 # test whether the filesystem supports symbolic links
 755 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
 756 rm -f y