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         awk '
 242                 function name(n) {
 243                         if (n == 0) return "RESET";
 244                         if (n == 1) return "BOLD";
 245                         if (n == 30) return "BLACK";
 246                         if (n == 31) return "RED";
 247                         if (n == 32) return "GREEN";
 248                         if (n == 33) return "YELLOW";
 249                         if (n == 34) return "BLUE";
 250                         if (n == 35) return "MAGENTA";
 251                         if (n == 36) return "CYAN";
 252                         if (n == 37) return "WHITE";
 253                         if (n == 40) return "BLACK";
 254                         if (n == 41) return "BRED";
 255                         if (n == 42) return "BGREEN";
 256                         if (n == 43) return "BYELLOW";
 257                         if (n == 44) return "BBLUE";
 258                         if (n == 45) return "BMAGENTA";
 259                         if (n == 46) return "BCYAN";
 260                         if (n == 47) return "BWHITE";
 261                 }
 262                 {
 263                         while (match($0, /\x1b\[[0-9;]*m/) != 0) {
 264                                 printf "%s<", substr($0, 1, RSTART-1);
 265                                 codes = substr($0, RSTART+2, RLENGTH-3);
 266                                 if (length(codes) == 0)
 267                                         printf "%s", name(0)
 268                                 else {
 269                                         n = split(codes, ary, ";");
 270                                         sep = "";
 271                                         for (i = 1; i <= n; i++) {
 272                                                 printf "%s%s", sep, name(ary[i]);
 273                                                 sep = ";"
 274                                         }
 275                                 }
 276                                 printf ">";
 277                                 $0 = substr($0, RSTART + RLENGTH, length($0) - RSTART - RLENGTH + 1);
 278                         }
 279                         print
 280                 }
 281         '
 282 }
 283
 284 nul_to_q () {
 285         perl -pe 'y/\000/Q/'
 286 }
 287
 288 q_to_nul () {
 289         perl -pe 'y/Q/\000/'
 290 }
 291
 292 q_to_cr () {
 293         tr Q '\015'
 294 }
 295
 296 q_to_tab () {
 297         tr Q '\011'
 298 }
 299
 300 append_cr () {
 301         sed -e 's/$/Q/' | tr Q '\015'
 302 }
 303
 304 remove_cr () {
 305         tr '\015' Q | sed -e 's/Q$//'
 306 }
 307
 308 # In some bourne shell implementations, the "unset" builtin returns
 309 # nonzero status when a variable to be unset was not set in the first
 310 # place.
 311 #
 312 # Use sane_unset when that should not be considered an error.
 313
 314 sane_unset () {
 315         unset "$@"
 316         return 0
 317 }
 318
 319 test_tick () {
 320         if test -z "${test_tick+set}"
 321         then
 322                 test_tick=1112911993
 323         else
 324                 test_tick=$(($test_tick + 60))
 325         fi
 326         GIT_COMMITTER_DATE="$test_tick -0700"
 327         GIT_AUTHOR_DATE="$test_tick -0700"
 328         export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 329 }
 330
 331 # Call test_commit with the arguments "<message> [<file> [<contents>]]"
 332 #
 333 # This will commit a file with the given contents and the given commit
 334 # message.  It will also add a tag with <message> as name.
 335 #
 336 # Both <file> and <contents> default to <message>.
 337
 338 test_commit () {
 339         file=${2:-"$1.t"}
 340         echo "${3-$1}" > "$file" &&
 341         git add "$file" &&
 342         test_tick &&
 343         git commit -m "$1" &&
 344         git tag "$1"
 345 }
 346
 347 # Call test_merge with the arguments "<message> <commit>", where <commit>
 348 # can be a tag pointing to the commit-to-merge.
 349
 350 test_merge () {
 351         test_tick &&
 352         git merge -m "$1" "$2" &&
 353         git tag "$1"
 354 }
 355
 356 # This function helps systems where core.filemode=false is set.
 357 # Use it instead of plain 'chmod +x' to set or unset the executable bit
 358 # of a file in the working directory and add it to the index.
 359
 360 test_chmod () {
 361         chmod "$@" &&
 362         git update-index --add "--chmod=$@"
 363 }
 364
 365 # Use test_set_prereq to tell that a particular prerequisite is available.
 366 # The prerequisite can later be checked for in two ways:
 367 #
 368 # - Explicitly using test_have_prereq.
 369 #
 370 # - Implicitly by specifying the prerequisite tag in the calls to
 371 #   test_expect_{success,failure,code}.
 372 #
 373 # The single parameter is the prerequisite tag (a simple word, in all
 374 # capital letters by convention).
 375
 376 test_set_prereq () {
 377         satisfied="$satisfied$1 "
 378 }
 379 satisfied=" "
 380
 381 test_have_prereq () {
 382         # prerequisites can be concatenated with ','
 383         save_IFS=$IFS
 384         IFS=,
 385         set -- $*
 386         IFS=$save_IFS
 387
 388         total_prereq=0
 389         ok_prereq=0
 390         missing_prereq=
 391
 392         for prerequisite
 393         do
 394                 total_prereq=$(($total_prereq + 1))
 395                 case $satisfied in
 396                 *" $prerequisite "*)
 397                         ok_prereq=$(($ok_prereq + 1))
 398                         ;;
 399                 *)
 400                         # Keep a list of missing prerequisites
 401                         if test -z "$missing_prereq"
 402                         then
 403                                 missing_prereq=$prerequisite
 404                         else
 405                                 missing_prereq="$prerequisite,$missing_prereq"
 406                         fi
 407                 esac
 408         done
 409
 410         test $total_prereq = $ok_prereq
 411 }
 412
 413 test_declared_prereq () {
 414         case ",$test_prereq," in
 415         *,$1,*)
 416                 return 0
 417                 ;;
 418         esac
 419         return 1
 420 }
 421
 422 # You are not expected to call test_ok_ and test_failure_ directly, use
 423 # the text_expect_* functions instead.
 424
 425 test_ok_ () {
 426         test_success=$(($test_success + 1))
 427         say_color "" "ok $test_count - $@"
 428 }
 429
 430 test_failure_ () {
 431         test_failure=$(($test_failure + 1))
 432         say_color error "not ok - $test_count $1"
 433         shift
 434         echo "$@" | sed -e 's/^/#       /'
 435         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 436 }
 437
 438 test_known_broken_ok_ () {
 439         test_fixed=$(($test_fixed+1))
 440         say_color "" "ok $test_count - $@ # TODO known breakage"
 441 }
 442
 443 test_known_broken_failure_ () {
 444         test_broken=$(($test_broken+1))
 445         say_color skip "not ok $test_count - $@ # TODO known breakage"
 446 }
 447
 448 test_debug () {
 449         test "$debug" = "" || eval "$1"
 450 }
 451
 452 test_run_ () {
 453         test_cleanup=:
 454         eval >&3 2>&4 "$1"
 455         eval_ret=$?
 456         eval >&3 2>&4 "$test_cleanup"
 457         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 458                 echo ""
 459         fi
 460         return 0
 461 }
 462
 463 test_skip () {
 464         test_count=$(($test_count+1))
 465         to_skip=
 466         for skp in $GIT_SKIP_TESTS
 467         do
 468                 case $this_test.$test_count in
 469                 $skp)
 470                         to_skip=t
 471                         break
 472                 esac
 473         done
 474         if test -z "$to_skip" && test -n "$test_prereq" &&
 475            ! test_have_prereq "$test_prereq"
 476         then
 477                 to_skip=t
 478         fi
 479         case "$to_skip" in
 480         t)
 481                 of_prereq=
 482                 if test "$missing_prereq" != "$test_prereq"
 483                 then
 484                         of_prereq=" of $test_prereq"
 485                 fi
 486
 487                 say_color skip >&3 "skipping test: $@"
 488                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 489                 : true
 490                 ;;
 491         *)
 492                 false
 493                 ;;
 494         esac
 495 }
 496
 497 test_expect_failure () {
 498         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 499         test "$#" = 2 ||
 500         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 501         export test_prereq
 502         if ! test_skip "$@"
 503         then
 504                 say >&3 "checking known breakage: $2"
 505                 test_run_ "$2"
 506                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 507                 then
 508                         test_known_broken_ok_ "$1"
 509                 else
 510                         test_known_broken_failure_ "$1"
 511                 fi
 512         fi
 513         echo >&3 ""
 514 }
 515
 516 test_expect_success () {
 517         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 518         test "$#" = 2 ||
 519         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 520         export test_prereq
 521         if ! test_skip "$@"
 522         then
 523                 say >&3 "expecting success: $2"
 524                 test_run_ "$2"
 525                 if [ "$?" = 0 -a "$eval_ret" = 0 ]
 526                 then
 527                         test_ok_ "$1"
 528                 else
 529                         test_failure_ "$@"
 530                 fi
 531         fi
 532         echo >&3 ""
 533 }
 534
 535 # test_external runs external test scripts that provide continuous
 536 # test output about their progress, and succeeds/fails on
 537 # zero/non-zero exit code.  It outputs the test output on stdout even
 538 # in non-verbose mode, and announces the external script with "# run
 539 # <n>: ..." before running it.  When providing relative paths, keep in
 540 # mind that all scripts run in "trash directory".
 541 # Usage: test_external description command arguments...
 542 # Example: test_external 'Perl API' perl ../path/to/test.pl
 543 test_external () {
 544         test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq=
 545         test "$#" = 3 ||
 546         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 547         descr="$1"
 548         shift
 549         export test_prereq
 550         if ! test_skip "$descr" "$@"
 551         then
 552                 # Announce the script to reduce confusion about the
 553                 # test output that follows.
 554                 say_color "" "# run $test_count: $descr ($*)"
 555                 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG
 556                 # to be able to use them in script
 557                 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG
 558                 # Run command; redirect its stderr to &4 as in
 559                 # test_run_, but keep its stdout on our stdout even in
 560                 # non-verbose mode.
 561                 "$@" 2>&4
 562                 if [ "$?" = 0 ]
 563                 then
 564                         if test $test_external_has_tap -eq 0; then
 565                                 test_ok_ "$descr"
 566                         else
 567                                 say_color "" "# test_external test $descr was ok"
 568                                 test_success=$(($test_success + 1))
 569                         fi
 570                 else
 571                         if test $test_external_has_tap -eq 0; then
 572                                 test_failure_ "$descr" "$@"
 573                         else
 574                                 say_color error "# test_external test $descr failed: $@"
 575                                 test_failure=$(($test_failure + 1))
 576                         fi
 577                 fi
 578         fi
 579 }
 580
 581 # Like test_external, but in addition tests that the command generated
 582 # no output on stderr.
 583 test_external_without_stderr () {
 584         # The temporary file has no (and must have no) security
 585         # implications.
 586         tmp="$TMPDIR"; if [ -z "$tmp" ]; then tmp=/tmp; fi
 587         stderr="$tmp/git-external-stderr.$$.tmp"
 588         test_external "$@" 4> "$stderr"
 589         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 590         descr="no stderr: $1"
 591         shift
 592         say >&3 "# expecting no stderr from previous command"
 593         if [ ! -s "$stderr" ]; then
 594                 rm "$stderr"
 595
 596                 if test $test_external_has_tap -eq 0; then
 597                         test_ok_ "$descr"
 598                 else
 599                         say_color "" "# test_external_without_stderr test $descr was ok"
 600                         test_success=$(($test_success + 1))
 601                 fi
 602         else
 603                 if [ "$verbose" = t ]; then
 604                         output=`echo; echo "# Stderr is:"; cat "$stderr"`
 605                 else
 606                         output=
 607                 fi
 608                 # rm first in case test_failure exits.
 609                 rm "$stderr"
 610                 if test $test_external_has_tap -eq 0; then
 611                         test_failure_ "$descr" "$@" "$output"
 612                 else
 613                         say_color error "# test_external_without_stderr test $descr failed: $@: $output"
 614                         test_failure=$(($test_failure + 1))
 615                 fi
 616         fi
 617 }
 618
 619 # debugging-friendly alternatives to "test [-f|-d|-e]"
 620 # The commands test the existence or non-existence of $1. $2 can be
 621 # given to provide a more precise diagnosis.
 622 test_path_is_file () {
 623         if ! [ -f "$1" ]
 624         then
 625                 echo "File $1 doesn't exist. $*"
 626                 false
 627         fi
 628 }
 629
 630 test_path_is_dir () {
 631         if ! [ -d "$1" ]
 632         then
 633                 echo "Directory $1 doesn't exist. $*"
 634                 false
 635         fi
 636 }
 637
 638 test_path_is_missing () {
 639         if [ -e "$1" ]
 640         then
 641                 echo "Path exists:"
 642                 ls -ld "$1"
 643                 if [ $# -ge 1 ]; then
 644                         echo "$*"
 645                 fi
 646                 false
 647         fi
 648 }
 649
 650 # test_line_count checks that a file has the number of lines it
 651 # ought to. For example:
 652 #
 653 #       test_expect_success 'produce exactly one line of output' '
 654 #               do something >output &&
 655 #               test_line_count = 1 output
 656 #       '
 657 #
 658 # is like "test $(wc -l <output) = 1" except that it passes the
 659 # output through when the number of lines is wrong.
 660
 661 test_line_count () {
 662         if test $# != 3
 663         then
 664                 error "bug in the test script: not 3 parameters to test_line_count"
 665         elif ! test $(wc -l <"$3") "$1" "$2"
 666         then
 667                 echo "test_line_count: line count for $3 !$1 $2"
 668                 cat "$3"
 669                 return 1
 670         fi
 671 }
 672
 673 # This is not among top-level (test_expect_success | test_expect_failure)
 674 # but is a prefix that can be used in the test script, like:
 675 #
 676 #       test_expect_success 'complain and die' '
 677 #           do something &&
 678 #           do something else &&
 679 #           test_must_fail git checkout ../outerspace
 680 #       '
 681 #
 682 # Writing this as "! git checkout ../outerspace" is wrong, because
 683 # the failure could be due to a segv.  We want a controlled failure.
 684
 685 test_must_fail () {
 686         "$@"
 687         exit_code=$?
 688         if test $exit_code = 0; then
 689                 echo >&2 "test_must_fail: command succeeded: $*"
 690                 return 1
 691         elif test $exit_code -gt 129 -a $exit_code -le 192; then
 692                 echo >&2 "test_must_fail: died by signal: $*"
 693                 return 1
 694         elif test $exit_code = 127; then
 695                 echo >&2 "test_must_fail: command not found: $*"
 696                 return 1
 697         fi
 698         return 0
 699 }
 700
 701 # Similar to test_must_fail, but tolerates success, too.  This is
 702 # meant to be used in contexts like:
 703 #
 704 #       test_expect_success 'some command works without configuration' '
 705 #               test_might_fail git config --unset all.configuration &&
 706 #               do something
 707 #       '
 708 #
 709 # Writing "git config --unset all.configuration || :" would be wrong,
 710 # because we want to notice if it fails due to segv.
 711
 712 test_might_fail () {
 713         "$@"
 714         exit_code=$?
 715         if test $exit_code -gt 129 -a $exit_code -le 192; then
 716                 echo >&2 "test_might_fail: died by signal: $*"
 717                 return 1
 718         elif test $exit_code = 127; then
 719                 echo >&2 "test_might_fail: command not found: $*"
 720                 return 1
 721         fi
 722         return 0
 723 }
 724
 725 # Similar to test_must_fail and test_might_fail, but check that a
 726 # given command exited with a given exit code. Meant to be used as:
 727 #
 728 #       test_expect_success 'Merge with d/f conflicts' '
 729 #               test_expect_code 1 git merge "merge msg" B master
 730 #       '
 731
 732 test_expect_code () {
 733         want_code=$1
 734         shift
 735         "$@"
 736         exit_code=$?
 737         if test $exit_code = $want_code
 738         then
 739                 echo >&2 "test_expect_code: command exited with $exit_code: $*"
 740                 return 0
 741         else
 742                 echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
 743                 return 1
 744         fi
 745 }
 746
 747 # test_cmp is a helper function to compare actual and expected output.
 748 # You can use it like:
 749 #
 750 #       test_expect_success 'foo works' '
 751 #               echo expected >expected &&
 752 #               foo >actual &&
 753 #               test_cmp expected actual
 754 #       '
 755 #
 756 # This could be written as either "cmp" or "diff -u", but:
 757 # - cmp's output is not nearly as easy to read as diff -u
 758 # - not all diff versions understand "-u"
 759
 760 test_cmp() {
 761         $GIT_TEST_CMP "$@"
 762 }
 763
 764 # This function can be used to schedule some commands to be run
 765 # unconditionally at the end of the test to restore sanity:
 766 #
 767 #       test_expect_success 'test core.capslock' '
 768 #               git config core.capslock true &&
 769 #               test_when_finished "git config --unset core.capslock" &&
 770 #               hello world
 771 #       '
 772 #
 773 # That would be roughly equivalent to
 774 #
 775 #       test_expect_success 'test core.capslock' '
 776 #               git config core.capslock true &&
 777 #               hello world
 778 #               git config --unset core.capslock
 779 #       '
 780 #
 781 # except that the greeting and config --unset must both succeed for
 782 # the test to pass.
 783
 784 test_when_finished () {
 785         test_cleanup="{ $*
 786                 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 787 }
 788
 789 # Most tests can use the created repository, but some may need to create more.
 790 # Usage: test_create_repo <directory>
 791 test_create_repo () {
 792         test "$#" = 1 ||
 793         error "bug in the test script: not 1 parameter to test-create-repo"
 794         repo="$1"
 795         mkdir -p "$repo"
 796         (
 797                 cd "$repo" || error "Cannot setup test environment"
 798                 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
 799                 error "cannot run git init -- have you built things yet?"
 800                 mv .git/hooks .git/hooks-disabled
 801         ) || exit
 802 }
 803
 804 test_done () {
 805         GIT_EXIT_OK=t
 806
 807         if test -z "$HARNESS_ACTIVE"; then
 808                 test_results_dir="$TEST_DIRECTORY/test-results"
 809                 mkdir -p "$test_results_dir"
 810                 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 811
 812                 echo "total $test_count" >> $test_results_path
 813                 echo "success $test_success" >> $test_results_path
 814                 echo "fixed $test_fixed" >> $test_results_path
 815                 echo "broken $test_broken" >> $test_results_path
 816                 echo "failed $test_failure" >> $test_results_path
 817                 echo "" >> $test_results_path
 818         fi
 819
 820         if test "$test_fixed" != 0
 821         then
 822                 say_color pass "# fixed $test_fixed known breakage(s)"
 823         fi
 824         if test "$test_broken" != 0
 825         then
 826                 say_color error "# still have $test_broken known breakage(s)"
 827                 msg="remaining $(($test_count-$test_broken)) test(s)"
 828         else
 829                 msg="$test_count test(s)"
 830         fi
 831         case "$test_failure" in
 832         0)
 833                 # Maybe print SKIP message
 834                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 835
 836                 if test $test_external_has_tap -eq 0; then
 837                         say_color pass "# passed all $msg"
 838                         say "1..$test_count$skip_all"
 839                 fi
 840
 841                 test -d "$remove_trash" &&
 842                 cd "$(dirname "$remove_trash")" &&
 843                 rm -rf "$(basename "$remove_trash")"
 844
 845                 exit 0 ;;
 846
 847         *)
 848                 if test $test_external_has_tap -eq 0; then
 849                         say_color error "# failed $test_failure among $msg"
 850                         say "1..$test_count"
 851                 fi
 852
 853                 exit 1 ;;
 854
 855         esac
 856 }
 857
 858 # Test the binaries we have just built.  The tests are kept in
 859 # t/ subdirectory and are run in 'trash directory' subdirectory.
 860 if test -z "$TEST_DIRECTORY"
 861 then
 862         # We allow tests to override this, in case they want to run tests
 863         # outside of t/, e.g. for running tests on the test library
 864         # itself.
 865         TEST_DIRECTORY=$(pwd)
 866 fi
 867 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
 868
 869 if test -n "$valgrind"
 870 then
 871         make_symlink () {
 872                 test -h "$2" &&
 873                 test "$1" = "$(readlink "$2")" || {
 874                         # be super paranoid
 875                         if mkdir "$2".lock
 876                         then
 877                                 rm -f "$2" &&
 878                                 ln -s "$1" "$2" &&
 879                                 rm -r "$2".lock
 880                         else
 881                                 while test -d "$2".lock
 882                                 do
 883                                         say "Waiting for lock on $2."
 884                                         sleep 1
 885                                 done
 886                         fi
 887                 }
 888         }
 889
 890         make_valgrind_symlink () {
 891                 # handle only executables
 892                 test -x "$1" || return
 893
 894                 base=$(basename "$1")
 895                 symlink_target=$GIT_BUILD_DIR/$base
 896                 # do not override scripts
 897                 if test -x "$symlink_target" &&
 898                     test ! -d "$symlink_target" &&
 899                     test "#!" != "$(head -c 2 < "$symlink_target")"
 900                 then
 901                         symlink_target=../valgrind.sh
 902                 fi
 903                 case "$base" in
 904                 *.sh|*.perl)
 905                         symlink_target=../unprocessed-script
 906                 esac
 907                 # create the link, or replace it if it is out of date
 908                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 909         }
 910
 911         # override all git executables in TEST_DIRECTORY/..
 912         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 913         mkdir -p "$GIT_VALGRIND"/bin
 914         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 915         do
 916                 make_valgrind_symlink $file
 917         done
 918         OLDIFS=$IFS
 919         IFS=:
 920         for path in $PATH
 921         do
 922                 ls "$path"/git-* 2> /dev/null |
 923                 while read file
 924                 do
 925                         make_valgrind_symlink "$file"
 926                 done
 927         done
 928         IFS=$OLDIFS
 929         PATH=$GIT_VALGRIND/bin:$PATH
 930         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 931         export GIT_VALGRIND
 932 elif test -n "$GIT_TEST_INSTALLED" ; then
 933         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 934         error "Cannot run git from $GIT_TEST_INSTALLED."
 935         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 936         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 937 else # normal case, use ../bin-wrappers only unless $with_dashes:
 938         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 939         if ! test -x "$git_bin_dir/git" ; then
 940                 if test -z "$with_dashes" ; then
 941                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 942                 fi
 943                 with_dashes=t
 944         fi
 945         PATH="$git_bin_dir:$PATH"
 946         GIT_EXEC_PATH=$GIT_BUILD_DIR
 947         if test -n "$with_dashes" ; then
 948                 PATH="$GIT_BUILD_DIR:$PATH"
 949         fi
 950 fi
 951 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 952 unset GIT_CONFIG
 953 GIT_CONFIG_NOSYSTEM=1
 954 GIT_CONFIG_NOGLOBAL=1
 955 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_CONFIG_NOGLOBAL
 956
 957 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
 958
 959 if test -z "$GIT_TEST_CMP"
 960 then
 961         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 962         then
 963                 GIT_TEST_CMP="$DIFF -c"
 964         else
 965                 GIT_TEST_CMP="$DIFF -u"
 966         fi
 967 fi
 968
 969 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 970 export GITPERLLIB
 971 test -d "$GIT_BUILD_DIR"/templates/blt || {
 972         error "You haven't built things yet, have you?"
 973 }
 974
 975 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 976 then
 977         GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
 978         export GITPYTHONLIB
 979         test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
 980                 error "You haven't built git_remote_helpers yet, have you?"
 981         }
 982 fi
 983
 984 if ! test -x "$GIT_BUILD_DIR"/test-chmtime; then
 985         echo >&2 'You need to build test-chmtime:'
 986         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 987         exit 1
 988 fi
 989
 990 # Test repository
 991 test="trash directory.$(basename "$0" .sh)"
 992 test -n "$root" && test="$root/$test"
 993 case "$test" in
 994 /*) TRASH_DIRECTORY="$test" ;;
 995  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
 996 esac
 997 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 998 rm -fr "$test" || {
 999         GIT_EXIT_OK=t
1000         echo >&5 "FATAL: Cannot prepare test area"
1001         exit 1
1002 }
1003
1004 test_create_repo "$test"
1005 # Use -P to resolve symlinks in our working directory so that the cwd
1006 # in subprocesses like git equals our $PWD (for pathname comparisons).
1007 cd -P "$test" || exit 1
1008
1009 HOME=$(pwd)
1010 export HOME
1011
1012 this_test=${0##*/}
1013 this_test=${this_test%%-*}
1014 for skp in $GIT_SKIP_TESTS
1015 do
1016         case "$this_test" in
1017         $skp)
1018                 say_color skip >&3 "skipping test $this_test altogether"
1019                 skip_all="skip all tests in $this_test"
1020                 test_done
1021         esac
1022 done
1023
1024 # Provide an implementation of the 'yes' utility
1025 yes () {
1026         if test $# = 0
1027         then
1028                 y=y
1029         else
1030                 y="$*"
1031         fi
1032
1033         while echo "$y"
1034         do
1035                 :
1036         done
1037 }
1038
1039 # Fix some commands on Windows
1040 case $(uname -s) in
1041 *MINGW*)
1042         # Windows has its own (incompatible) sort and find
1043         sort () {
1044                 /usr/bin/sort "$@"
1045         }
1046         find () {
1047                 /usr/bin/find "$@"
1048         }
1049         sum () {
1050                 md5sum "$@"
1051         }
1052         # git sees Windows-style pwd
1053         pwd () {
1054                 builtin pwd -W
1055         }
1056         # no POSIX permissions
1057         # backslashes in pathspec are converted to '/'
1058         # exec does not inherit the PID
1059         test_set_prereq MINGW
1060         ;;
1061 *)
1062         test_set_prereq POSIXPERM
1063         test_set_prereq BSLASHPSPEC
1064         test_set_prereq EXECKEEPSPID
1065         test_set_prereq NOT_MINGW
1066         ;;
1067 esac
1068
1069 test -z "$NO_PERL" && test_set_prereq PERL
1070 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1071
1072 # test whether the filesystem supports symbolic links
1073 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
1074 rm -f y
1075
1076 # When the tests are run as root, permission tests will report that
1077 # things are writable when they shouldn't be.
1078 test -w / || test_set_prereq SANITY