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
  79 # Protect ourselves from common misconfiguration to export
  80 # CDPATH into the environment
  81 unset CDPATH
  82
  83 unset GREP_OPTIONS
  84
  85 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
  86         1|2|true)
  87                 echo "* warning: Some tests will not work if GIT_TRACE" \
  88                         "is set as to trace on STDERR ! *"
  89                 echo "* warning: Please set GIT_TRACE to something" \
  90                         "other than 1, 2 or true ! *"
  91                 ;;
  92 esac
  93
  94 # Convenience
  95 #
  96 # A regexp to match 5 and 40 hexdigits
  97 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  98 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
  99
 100 # Each test should start with something like this, after copyright notices:
 101 #
 102 # test_description='Description of this test...
 103 # This test checks if command xyzzy does the right thing...
 104 # '
 105 # . ./test-lib.sh
 106 [ "x$ORIGINAL_TERM" != "xdumb" ] && (
 107                 TERM=$ORIGINAL_TERM &&
 108                 export TERM &&
 109                 [ -t 1 ] &&
 110                 tput bold >/dev/null 2>&1 &&
 111                 tput setaf 1 >/dev/null 2>&1 &&
 112                 tput sgr0 >/dev/null 2>&1
 113         ) &&
 114         color=t
 115
 116 while test "$#" -ne 0
 117 do
 118         case "$1" in
 119         -d|--d|--de|--deb|--debu|--debug)
 120                 debug=t; shift ;;
 121         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 122                 immediate=t; shift ;;
 123         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 124                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 125         -h|--h|--he|--hel|--help)
 126                 help=t; shift ;;
 127         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 128                 verbose=t; shift ;;
 129         -q|--q|--qu|--qui|--quie|--quiet)
 130                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 131                 # passed without the ok/not ok details is always an error.
 132                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 133         --with-dashes)
 134                 with_dashes=t; shift ;;
 135         --no-color)
 136                 color=; shift ;;
 137         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 138                 valgrind=t; verbose=t; shift ;;
 139         --tee)
 140                 shift ;; # was handled already
 141         --root=*)
 142                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 143                 shift ;;
 144         *)
 145                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 146         esac
 147 done
 148
 149 if test -n "$color"; then
 150         say_color () {
 151                 (
 152                 TERM=$ORIGINAL_TERM
 153                 export TERM
 154                 case "$1" in
 155                         error) tput bold; tput setaf 1;; # bold red
 156                         skip)  tput bold; tput setaf 2;; # bold green
 157                         pass)  tput setaf 2;;            # green
 158                         info)  tput setaf 3;;            # brown
 159                         *) test -n "$quiet" && return;;
 160                 esac
 161                 shift
 162                 printf "%s" "$*"
 163                 tput sgr0
 164                 echo
 165                 )
 166         }
 167 else
 168         say_color() {
 169                 test -z "$1" && test -n "$quiet" && return
 170                 shift
 171                 echo "$*"
 172         }
 173 fi
 174
 175 error () {
 176         say_color error "error: $*"
 177         GIT_EXIT_OK=t
 178         exit 1
 179 }
 180
 181 say () {
 182         say_color info "$*"
 183 }
 184
 185 test "${test_description}" != "" ||
 186 error "Test script did not set test_description."
 187
 188 if test "$help" = "t"
 189 then
 190         echo "$test_description"
 191         exit 0
 192 fi
 193
 194 exec 5>&1
 195 if test "$verbose" = "t"
 196 then
 197         exec 4>&2 3>&1
 198 else
 199         exec 4>/dev/null 3>/dev/null
 200 fi
 201
 202 test_failure=0
 203 test_count=0
 204 test_fixed=0
 205 test_broken=0
 206 test_success=0
 207
 208 test_external_has_tap=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 q_to_tab () {
 260         tr Q '\011'
 261 }
 262
 263 append_cr () {
 264         sed -e 's/$/Q/' | tr Q '\015'
 265 }
 266
 267 remove_cr () {
 268         tr '\015' Q | sed -e 's/Q$//'
 269 }
 270
 271 test_tick () {
 272         if test -z "${test_tick+set}"
 273         then
 274                 test_tick=1112911993
 275         else
 276                 test_tick=$(($test_tick + 60))
 277         fi
 278         GIT_COMMITTER_DATE="$test_tick -0700"
 279         GIT_AUTHOR_DATE="$test_tick -0700"
 280         export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 281 }
 282
 283 # Call test_commit with the arguments "<message> [<file> [<contents>]]"
 284 #
 285 # This will commit a file with the given contents and the given commit
 286 # message.  It will also add a tag with <message> as name.
 287 #
 288 # Both <file> and <contents> default to <message>.
 289
 290 test_commit () {
 291         file=${2:-"$1.t"}
 292         echo "${3-$1}" > "$file" &&
 293         git add "$file" &&
 294         test_tick &&
 295         git commit -m "$1" &&
 296         git tag "$1"
 297 }
 298
 299 # Call test_merge with the arguments "<message> <commit>", where <commit>
 300 # can be a tag pointing to the commit-to-merge.
 301
 302 test_merge () {
 303         test_tick &&
 304         git merge -m "$1" "$2" &&
 305         git tag "$1"
 306 }
 307
 308 # This function helps systems where core.filemode=false is set.
 309 # Use it instead of plain 'chmod +x' to set or unset the executable bit
 310 # of a file in the working directory and add it to the index.
 311
 312 test_chmod () {
 313         chmod "$@" &&
 314         git update-index --add "--chmod=$@"
 315 }
 316
 317 # Use test_set_prereq to tell that a particular prerequisite is available.
 318 # The prerequisite can later be checked for in two ways:
 319 #
 320 # - Explicitly using test_have_prereq.
 321 #
 322 # - Implicitly by specifying the prerequisite tag in the calls to
 323 #   test_expect_{success,failure,code}.
 324 #
 325 # The single parameter is the prerequisite tag (a simple word, in all
 326 # capital letters by convention).
 327
 328 test_set_prereq () {
 329         satisfied="$satisfied$1 "
 330 }
 331 satisfied=" "
 332
 333 test_have_prereq () {
 334         # prerequisites can be concatenated with ','
 335         save_IFS=$IFS
 336         IFS=,
 337         set -- $*
 338         IFS=$save_IFS
 339
 340         total_prereq=0
 341         ok_prereq=0
 342         missing_prereq=
 343
 344         for prerequisite
 345         do
 346                 total_prereq=$(($total_prereq + 1))
 347                 case $satisfied in
 348                 *" $prerequisite "*)
 349                         ok_prereq=$(($ok_prereq + 1))
 350                         ;;
 351                 *)
 352                         # Keep a list of missing prerequisites
 353                         if test -z "$missing_prereq"
 354                         then
 355                                 missing_prereq=$prerequisite
 356                         else
 357                                 missing_prereq="$prerequisite,$missing_prereq"
 358                         fi
 359                 esac
 360         done
 361
 362         test $total_prereq = $ok_prereq
 363 }
 364
 365 # You are not expected to call test_ok_ and test_failure_ directly, use
 366 # the text_expect_* functions instead.
 367
 368 test_ok_ () {
 369         test_success=$(($test_success + 1))
 370         say_color "" "ok $test_count - $@"
 371 }
 372
 373 test_failure_ () {
 374         test_failure=$(($test_failure + 1))
 375         say_color error "not ok - $test_count $1"
 376         shift
 377         echo "$@" | sed -e 's/^/#       /'
 378         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 379 }
 380
 381 test_known_broken_ok_ () {
 382         test_fixed=$(($test_fixed+1))
 383         say_color "" "ok $test_count - $@ # TODO known breakage"
 384 }
 385
 386 test_known_broken_failure_ () {
 387         test_broken=$(($test_broken+1))
 388         say_color skip "not ok $test_count - $@ # TODO known breakage"
 389 }
 390
 391 test_debug () {
 392         test "$debug" = "" || eval "$1"
 393 }
 394
 395 test_run_ () {
 396         test_cleanup=:
 397         eval >&3 2>&4 "$1"
 398         eval_ret=$?
 399         eval >&3 2>&4 "$test_cleanup"
 400         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 401                 echo ""
 402         fi
 403         return 0
 404 }
 405
 406 test_skip () {
 407         test_count=$(($test_count+1))
 408         to_skip=
 409         for skp in $GIT_SKIP_TESTS
 410         do
 411                 case $this_test.$test_count in
 412                 $skp)
 413                         to_skip=t
 414                         break
 415                 esac
 416         done
 417         if test -z "$to_skip" && test -n "$prereq" &&
 418            ! test_have_prereq "$prereq"
 419         then
 420                 to_skip=t
 421         fi
 422         case "$to_skip" in
 423         t)
 424                 of_prereq=
 425                 if test "$missing_prereq" != "$prereq"
 426                 then
 427                         of_prereq=" of $prereq"
 428                 fi
 429
 430                 say_color skip >&3 "skipping test: $@"
 431                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 432                 : true
 433                 ;;
 434         *)
 435                 false
 436                 ;;
 437         esac
 438 }
 439
 440 test_expect_failure () {
 441         test "$#" = 3 && { prereq=$1; shift; } || prereq=
 442         test "$#" = 2 ||
 443         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 444         if ! test_skip "$@"
 445         then
 446                 say >&3 "checking known breakage: $2"
 447                 test_run_ "$2"
 448                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 449                 then
 450                         test_known_broken_ok_ "$1"
 451                 else
 452                         test_known_broken_failure_ "$1"
 453                 fi
 454         fi
 455         echo >&3 ""
 456 }
 457
 458 test_expect_success () {
 459         test "$#" = 3 && { prereq=$1; shift; } || prereq=
 460         test "$#" = 2 ||
 461         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 462         if ! test_skip "$@"
 463         then
 464                 say >&3 "expecting success: $2"
 465                 test_run_ "$2"
 466                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 467                 then
 468                         test_ok_ "$1"
 469                 else
 470                         test_failure_ "$@"
 471                 fi
 472         fi
 473         echo >&3 ""
 474 }
 475
 476 test_expect_code () {
 477         test "$#" = 4 && { prereq=$1; shift; } || prereq=
 478         test "$#" = 3 ||
 479         error "bug in the test script: not 3 or 4 parameters to test-expect-code"
 480         if ! test_skip "$@"
 481         then
 482                 say >&3 "expecting exit code $1: $3"
 483                 test_run_ "$3"
 484                 if [ "$?" = 0 -a "$eval_ret" = "$1" ]
 485                 then
 486                         test_ok_ "$2"
 487                 else
 488                         test_failure_ "$@"
 489                 fi
 490         fi
 491         echo >&3 ""
 492 }
 493
 494 # test_external runs external test scripts that provide continuous
 495 # test output about their progress, and succeeds/fails on
 496 # zero/non-zero exit code.  It outputs the test output on stdout even
 497 # in non-verbose mode, and announces the external script with "# run
 498 # <n>: ..." before running it.  When providing relative paths, keep in
 499 # mind that all scripts run in "trash directory".
 500 # Usage: test_external description command arguments...
 501 # Example: test_external 'Perl API' perl ../path/to/test.pl
 502 test_external () {
 503         test "$#" = 4 && { prereq=$1; shift; } || prereq=
 504         test "$#" = 3 ||
 505         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 506         descr="$1"
 507         shift
 508         if ! test_skip "$descr" "$@"
 509         then
 510                 # Announce the script to reduce confusion about the
 511                 # test output that follows.
 512                 say_color "" "# run $test_count: $descr ($*)"
 513                 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG
 514                 # to be able to use them in script
 515                 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG
 516                 # Run command; redirect its stderr to &4 as in
 517                 # test_run_, but keep its stdout on our stdout even in
 518                 # non-verbose mode.
 519                 "$@" 2>&4
 520                 if [ "$?" = 0 ]
 521                 then
 522                         if test $test_external_has_tap -eq 0; then
 523                                 test_ok_ "$descr"
 524                         else
 525                                 say_color "" "# test_external test $descr was ok"
 526                                 test_success=$(($test_success + 1))
 527                         fi
 528                 else
 529                         if test $test_external_has_tap -eq 0; then
 530                                 test_failure_ "$descr" "$@"
 531                         else
 532                                 say_color error "# test_external test $descr failed: $@"
 533                                 test_failure=$(($test_failure + 1))
 534                         fi
 535                 fi
 536         fi
 537 }
 538
 539 # Like test_external, but in addition tests that the command generated
 540 # no output on stderr.
 541 test_external_without_stderr () {
 542         # The temporary file has no (and must have no) security
 543         # implications.
 544         tmp="$TMPDIR"; if [ -z "$tmp" ]; then tmp=/tmp; fi
 545         stderr="$tmp/git-external-stderr.$$.tmp"
 546         test_external "$@" 4> "$stderr"
 547         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 548         descr="no stderr: $1"
 549         shift
 550         say >&3 "# expecting no stderr from previous command"
 551         if [ ! -s "$stderr" ]; then
 552                 rm "$stderr"
 553
 554                 if test $test_external_has_tap -eq 0; then
 555                         test_ok_ "$descr"
 556                 else
 557                         say_color "" "# test_external_without_stderr test $descr was ok"
 558                         test_success=$(($test_success + 1))
 559                 fi
 560         else
 561                 if [ "$verbose" = t ]; then
 562                         output=`echo; echo "# Stderr is:"; cat "$stderr"`
 563                 else
 564                         output=
 565                 fi
 566                 # rm first in case test_failure exits.
 567                 rm "$stderr"
 568                 if test $test_external_has_tap -eq 0; then
 569                         test_failure_ "$descr" "$@" "$output"
 570                 else
 571                         say_color error "# test_external_without_stderr test $descr failed: $@: $output"
 572                         test_failure=$(($test_failure + 1))
 573                 fi
 574         fi
 575 }
 576
 577 # debugging-friendly alternatives to "test [-f|-d|-e]"
 578 # The commands test the existence or non-existence of $1. $2 can be
 579 # given to provide a more precise diagnosis.
 580 test_path_is_file () {
 581         if ! [ -f "$1" ]
 582         then
 583                 echo "File $1 doesn't exist. $*"
 584                 false
 585         fi
 586 }
 587
 588 test_path_is_dir () {
 589         if ! [ -d "$1" ]
 590         then
 591                 echo "Directory $1 doesn't exist. $*"
 592                 false
 593         fi
 594 }
 595
 596 test_path_is_missing () {
 597         if [ -e "$1" ]
 598         then
 599                 echo "Path exists:"
 600                 ls -ld "$1"
 601                 if [ $# -ge 1 ]; then
 602                         echo "$*"
 603                 fi
 604                 false
 605         fi
 606 }
 607
 608
 609 # This is not among top-level (test_expect_success | test_expect_failure)
 610 # but is a prefix that can be used in the test script, like:
 611 #
 612 #       test_expect_success 'complain and die' '
 613 #           do something &&
 614 #           do something else &&
 615 #           test_must_fail git checkout ../outerspace
 616 #       '
 617 #
 618 # Writing this as "! git checkout ../outerspace" is wrong, because
 619 # the failure could be due to a segv.  We want a controlled failure.
 620
 621 test_must_fail () {
 622         "$@"
 623         exit_code=$?
 624         if test $exit_code = 0; then
 625                 echo >&2 "test_must_fail: command succeeded: $*"
 626                 return 1
 627         elif test $exit_code -gt 129 -a $exit_code -le 192; then
 628                 echo >&2 "test_must_fail: died by signal: $*"
 629                 return 1
 630         elif test $exit_code = 127; then
 631                 echo >&2 "test_must_fail: command not found: $*"
 632                 return 1
 633         fi
 634         return 0
 635 }
 636
 637 # Similar to test_must_fail, but tolerates success, too.  This is
 638 # meant to be used in contexts like:
 639 #
 640 #       test_expect_success 'some command works without configuration' '
 641 #               test_might_fail git config --unset all.configuration &&
 642 #               do something
 643 #       '
 644 #
 645 # Writing "git config --unset all.configuration || :" would be wrong,
 646 # because we want to notice if it fails due to segv.
 647
 648 test_might_fail () {
 649         "$@"
 650         exit_code=$?
 651         if test $exit_code -gt 129 -a $exit_code -le 192; then
 652                 echo >&2 "test_might_fail: died by signal: $*"
 653                 return 1
 654         elif test $exit_code = 127; then
 655                 echo >&2 "test_might_fail: command not found: $*"
 656                 return 1
 657         fi
 658         return 0
 659 }
 660
 661 # test_cmp is a helper function to compare actual and expected output.
 662 # You can use it like:
 663 #
 664 #       test_expect_success 'foo works' '
 665 #               echo expected >expected &&
 666 #               foo >actual &&
 667 #               test_cmp expected actual
 668 #       '
 669 #
 670 # This could be written as either "cmp" or "diff -u", but:
 671 # - cmp's output is not nearly as easy to read as diff -u
 672 # - not all diff versions understand "-u"
 673
 674 test_cmp() {
 675         $GIT_TEST_CMP "$@"
 676 }
 677
 678 # This function can be used to schedule some commands to be run
 679 # unconditionally at the end of the test to restore sanity:
 680 #
 681 #       test_expect_success 'test core.capslock' '
 682 #               git config core.capslock true &&
 683 #               test_when_finished "git config --unset core.capslock" &&
 684 #               hello world
 685 #       '
 686 #
 687 # That would be roughly equivalent to
 688 #
 689 #       test_expect_success 'test core.capslock' '
 690 #               git config core.capslock true &&
 691 #               hello world
 692 #               git config --unset core.capslock
 693 #       '
 694 #
 695 # except that the greeting and config --unset must both succeed for
 696 # the test to pass.
 697
 698 test_when_finished () {
 699         test_cleanup="{ $*
 700                 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 701 }
 702
 703 # Most tests can use the created repository, but some may need to create more.
 704 # Usage: test_create_repo <directory>
 705 test_create_repo () {
 706         test "$#" = 1 ||
 707         error "bug in the test script: not 1 parameter to test-create-repo"
 708         repo="$1"
 709         mkdir -p "$repo"
 710         (
 711                 cd "$repo" || error "Cannot setup test environment"
 712                 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
 713                 error "cannot run git init -- have you built things yet?"
 714                 mv .git/hooks .git/hooks-disabled
 715         ) || exit
 716 }
 717
 718 test_done () {
 719         GIT_EXIT_OK=t
 720
 721         if test -z "$HARNESS_ACTIVE"; then
 722                 test_results_dir="$TEST_DIRECTORY/test-results"
 723                 mkdir -p "$test_results_dir"
 724                 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 725
 726                 echo "total $test_count" >> $test_results_path
 727                 echo "success $test_success" >> $test_results_path
 728                 echo "fixed $test_fixed" >> $test_results_path
 729                 echo "broken $test_broken" >> $test_results_path
 730                 echo "failed $test_failure" >> $test_results_path
 731                 echo "" >> $test_results_path
 732         fi
 733
 734         if test "$test_fixed" != 0
 735         then
 736                 say_color pass "# fixed $test_fixed known breakage(s)"
 737         fi
 738         if test "$test_broken" != 0
 739         then
 740                 say_color error "# still have $test_broken known breakage(s)"
 741                 msg="remaining $(($test_count-$test_broken)) test(s)"
 742         else
 743                 msg="$test_count test(s)"
 744         fi
 745         case "$test_failure" in
 746         0)
 747                 # Maybe print SKIP message
 748                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 749
 750                 if test $test_external_has_tap -eq 0; then
 751                         say_color pass "# passed all $msg"
 752                         say "1..$test_count$skip_all"
 753                 fi
 754
 755                 test -d "$remove_trash" &&
 756                 cd "$(dirname "$remove_trash")" &&
 757                 rm -rf "$(basename "$remove_trash")"
 758
 759                 exit 0 ;;
 760
 761         *)
 762                 if test $test_external_has_tap -eq 0; then
 763                         say_color error "# failed $test_failure among $msg"
 764                         say "1..$test_count"
 765                 fi
 766
 767                 exit 1 ;;
 768
 769         esac
 770 }
 771
 772 # Test the binaries we have just built.  The tests are kept in
 773 # t/ subdirectory and are run in 'trash directory' subdirectory.
 774 if test -z "$TEST_DIRECTORY"
 775 then
 776         # We allow tests to override this, in case they want to run tests
 777         # outside of t/, e.g. for running tests on the test library
 778         # itself.
 779         TEST_DIRECTORY=$(pwd)
 780 fi
 781 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
 782
 783 if test -n "$valgrind"
 784 then
 785         make_symlink () {
 786                 test -h "$2" &&
 787                 test "$1" = "$(readlink "$2")" || {
 788                         # be super paranoid
 789                         if mkdir "$2".lock
 790                         then
 791                                 rm -f "$2" &&
 792                                 ln -s "$1" "$2" &&
 793                                 rm -r "$2".lock
 794                         else
 795                                 while test -d "$2".lock
 796                                 do
 797                                         say "Waiting for lock on $2."
 798                                         sleep 1
 799                                 done
 800                         fi
 801                 }
 802         }
 803
 804         make_valgrind_symlink () {
 805                 # handle only executables
 806                 test -x "$1" || return
 807
 808                 base=$(basename "$1")
 809                 symlink_target=$GIT_BUILD_DIR/$base
 810                 # do not override scripts
 811                 if test -x "$symlink_target" &&
 812                     test ! -d "$symlink_target" &&
 813                     test "#!" != "$(head -c 2 < "$symlink_target")"
 814                 then
 815                         symlink_target=../valgrind.sh
 816                 fi
 817                 case "$base" in
 818                 *.sh|*.perl)
 819                         symlink_target=../unprocessed-script
 820                 esac
 821                 # create the link, or replace it if it is out of date
 822                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 823         }
 824
 825         # override all git executables in TEST_DIRECTORY/..
 826         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 827         mkdir -p "$GIT_VALGRIND"/bin
 828         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 829         do
 830                 make_valgrind_symlink $file
 831         done
 832         OLDIFS=$IFS
 833         IFS=:
 834         for path in $PATH
 835         do
 836                 ls "$path"/git-* 2> /dev/null |
 837                 while read file
 838                 do
 839                         make_valgrind_symlink "$file"
 840                 done
 841         done
 842         IFS=$OLDIFS
 843         PATH=$GIT_VALGRIND/bin:$PATH
 844         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 845         export GIT_VALGRIND
 846 elif test -n "$GIT_TEST_INSTALLED" ; then
 847         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 848         error "Cannot run git from $GIT_TEST_INSTALLED."
 849         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 850         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 851 else # normal case, use ../bin-wrappers only unless $with_dashes:
 852         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 853         if ! test -x "$git_bin_dir/git" ; then
 854                 if test -z "$with_dashes" ; then
 855                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 856                 fi
 857                 with_dashes=t
 858         fi
 859         PATH="$git_bin_dir:$PATH"
 860         GIT_EXEC_PATH=$GIT_BUILD_DIR
 861         if test -n "$with_dashes" ; then
 862                 PATH="$GIT_BUILD_DIR:$PATH"
 863         fi
 864 fi
 865 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 866 unset GIT_CONFIG
 867 GIT_CONFIG_NOSYSTEM=1
 868 GIT_CONFIG_NOGLOBAL=1
 869 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_CONFIG_NOGLOBAL
 870
 871 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
 872
 873 if test -z "$GIT_TEST_CMP"
 874 then
 875         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 876         then
 877                 GIT_TEST_CMP="$DIFF -c"
 878         else
 879                 GIT_TEST_CMP="$DIFF -u"
 880         fi
 881 fi
 882
 883 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 884 export GITPERLLIB
 885 test -d "$GIT_BUILD_DIR"/templates/blt || {
 886         error "You haven't built things yet, have you?"
 887 }
 888
 889 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 890 then
 891         GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
 892         export GITPYTHONLIB
 893         test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
 894                 error "You haven't built git_remote_helpers yet, have you?"
 895         }
 896 fi
 897
 898 if ! test -x "$GIT_BUILD_DIR"/test-chmtime; then
 899         echo >&2 'You need to build test-chmtime:'
 900         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 901         exit 1
 902 fi
 903
 904 # Test repository
 905 test="trash directory.$(basename "$0" .sh)"
 906 test -n "$root" && test="$root/$test"
 907 case "$test" in
 908 /*) TRASH_DIRECTORY="$test" ;;
 909  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
 910 esac
 911 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 912 rm -fr "$test" || {
 913         GIT_EXIT_OK=t
 914         echo >&5 "FATAL: Cannot prepare test area"
 915         exit 1
 916 }
 917
 918 test_create_repo "$test"
 919 # Use -P to resolve symlinks in our working directory so that the cwd
 920 # in subprocesses like git equals our $PWD (for pathname comparisons).
 921 cd -P "$test" || exit 1
 922
 923 HOME=$(pwd)
 924 export HOME
 925
 926 this_test=${0##*/}
 927 this_test=${this_test%%-*}
 928 for skp in $GIT_SKIP_TESTS
 929 do
 930         case "$this_test" in
 931         $skp)
 932                 say_color skip >&3 "skipping test $this_test altogether"
 933                 skip_all="skip all tests in $this_test"
 934                 test_done
 935         esac
 936 done
 937
 938 # Provide an implementation of the 'yes' utility
 939 yes () {
 940         if test $# = 0
 941         then
 942                 y=y
 943         else
 944                 y="$*"
 945         fi
 946
 947         while echo "$y"
 948         do
 949                 :
 950         done
 951 }
 952
 953 # Fix some commands on Windows
 954 case $(uname -s) in
 955 *MINGW*)
 956         # Windows has its own (incompatible) sort and find
 957         sort () {
 958                 /usr/bin/sort "$@"
 959         }
 960         find () {
 961                 /usr/bin/find "$@"
 962         }
 963         sum () {
 964                 md5sum "$@"
 965         }
 966         # git sees Windows-style pwd
 967         pwd () {
 968                 builtin pwd -W
 969         }
 970         # no POSIX permissions
 971         # backslashes in pathspec are converted to '/'
 972         # exec does not inherit the PID
 973         ;;
 974 *)
 975         test_set_prereq POSIXPERM
 976         test_set_prereq BSLASHPSPEC
 977         test_set_prereq EXECKEEPSPID
 978         ;;
 979 esac
 980
 981 test -z "$NO_PERL" && test_set_prereq PERL
 982 test -z "$NO_PYTHON" && test_set_prereq PYTHON
 983
 984 # test whether the filesystem supports symbolic links
 985 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
 986 rm -f y
 987
 988 # When the tests are run as root, permission tests will report that
 989 # things are writable when they shouldn't be.
 990 test -w / || test_set_prereq SANITY