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 EMAIL
  47 unset $(perl -e '
  48         my @env = keys %ENV;
  49         my $ok = join("|", qw(
  50                 TRACE
  51                 DEBUG
  52                 USE_LOOKUP
  53                 TEST
  54                 .*_TEST
  55                 PROVE
  56                 VALGRIND
  57         ));
  58         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  59         print join("\n", @vars);
  60 ')
  61 GIT_AUTHOR_EMAIL=author@example.com
  62 GIT_AUTHOR_NAME='A U Thor'
  63 GIT_COMMITTER_EMAIL=committer@example.com
  64 GIT_COMMITTER_NAME='C O Mitter'
  65 GIT_MERGE_VERBOSITY=5
  66 export GIT_MERGE_VERBOSITY
  67 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
  68 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
  69 export EDITOR
  70
  71 # Protect ourselves from common misconfiguration to export
  72 # CDPATH into the environment
  73 unset CDPATH
  74
  75 unset GREP_OPTIONS
  76
  77 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
  78         1|2|true)
  79                 echo "* warning: Some tests will not work if GIT_TRACE" \
  80                         "is set as to trace on STDERR ! *"
  81                 echo "* warning: Please set GIT_TRACE to something" \
  82                         "other than 1, 2 or true ! *"
  83                 ;;
  84 esac
  85
  86 # Convenience
  87 #
  88 # A regexp to match 5 and 40 hexdigits
  89 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  90 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
  91
  92 # Zero SHA-1
  93 _z40=0000000000000000000000000000000000000000
  94
  95 # Line feed
  96 LF='
  97 '
  98
  99 # Each test should start with something like this, after copyright notices:
 100 #
 101 # test_description='Description of this test...
 102 # This test checks if command xyzzy does the right thing...
 103 # '
 104 # . ./test-lib.sh
 105 [ "x$ORIGINAL_TERM" != "xdumb" ] && (
 106                 TERM=$ORIGINAL_TERM &&
 107                 export TERM &&
 108                 [ -t 1 ] &&
 109                 tput bold >/dev/null 2>&1 &&
 110                 tput setaf 1 >/dev/null 2>&1 &&
 111                 tput sgr0 >/dev/null 2>&1
 112         ) &&
 113         color=t
 114
 115 while test "$#" -ne 0
 116 do
 117         case "$1" in
 118         -d|--d|--de|--deb|--debu|--debug)
 119                 debug=t; shift ;;
 120         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 121                 immediate=t; shift ;;
 122         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 123                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 124         -h|--h|--he|--hel|--help)
 125                 help=t; shift ;;
 126         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 127                 verbose=t; shift ;;
 128         -q|--q|--qu|--qui|--quie|--quiet)
 129                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 130                 # passed without the ok/not ok details is always an error.
 131                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 132         --with-dashes)
 133                 with_dashes=t; shift ;;
 134         --no-color)
 135                 color=; shift ;;
 136         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 137                 valgrind=t; verbose=t; shift ;;
 138         --tee)
 139                 shift ;; # was handled already
 140         --root=*)
 141                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 142                 shift ;;
 143         *)
 144                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 145         esac
 146 done
 147
 148 if test -n "$color"; then
 149         say_color () {
 150                 (
 151                 TERM=$ORIGINAL_TERM
 152                 export TERM
 153                 case "$1" in
 154                         error) tput bold; tput setaf 1;; # bold red
 155                         skip)  tput bold; tput setaf 2;; # bold green
 156                         pass)  tput setaf 2;;            # green
 157                         info)  tput setaf 3;;            # brown
 158                         *) test -n "$quiet" && return;;
 159                 esac
 160                 shift
 161                 printf "%s" "$*"
 162                 tput sgr0
 163                 echo
 164                 )
 165         }
 166 else
 167         say_color() {
 168                 test -z "$1" && test -n "$quiet" && return
 169                 shift
 170                 echo "$*"
 171         }
 172 fi
 173
 174 error () {
 175         say_color error "error: $*"
 176         GIT_EXIT_OK=t
 177         exit 1
 178 }
 179
 180 say () {
 181         say_color info "$*"
 182 }
 183
 184 test "${test_description}" != "" ||
 185 error "Test script did not set test_description."
 186
 187 if test "$help" = "t"
 188 then
 189         echo "$test_description"
 190         exit 0
 191 fi
 192
 193 exec 5>&1
 194 if test "$verbose" = "t"
 195 then
 196         exec 4>&2 3>&1
 197 else
 198         exec 4>/dev/null 3>/dev/null
 199 fi
 200
 201 test_failure=0
 202 test_count=0
 203 test_fixed=0
 204 test_broken=0
 205 test_success=0
 206
 207 test_external_has_tap=0
 208
 209 die () {
 210         code=$?
 211         if test -n "$GIT_EXIT_OK"
 212         then
 213                 exit $code
 214         else
 215                 echo >&5 "FATAL: Unexpected exit with code $code"
 216                 exit 1
 217         fi
 218 }
 219
 220 GIT_EXIT_OK=
 221 trap 'die' EXIT
 222
 223 # The semantics of the editor variables are that of invoking
 224 # sh -c "$EDITOR \"$@\"" files ...
 225 #
 226 # If our trash directory contains shell metacharacters, they will be
 227 # interpreted if we just set $EDITOR directly, so do a little dance with
 228 # environment variables to work around this.
 229 #
 230 # In particular, quoting isn't enough, as the path may contain the same quote
 231 # that we're using.
 232 test_set_editor () {
 233         FAKE_EDITOR="$1"
 234         export FAKE_EDITOR
 235         EDITOR='"$FAKE_EDITOR"'
 236         export EDITOR
 237 }
 238
 239 test_decode_color () {
 240         awk '
 241                 function name(n) {
 242                         if (n == 0) return "RESET";
 243                         if (n == 1) return "BOLD";
 244                         if (n == 30) return "BLACK";
 245                         if (n == 31) return "RED";
 246                         if (n == 32) return "GREEN";
 247                         if (n == 33) return "YELLOW";
 248                         if (n == 34) return "BLUE";
 249                         if (n == 35) return "MAGENTA";
 250                         if (n == 36) return "CYAN";
 251                         if (n == 37) return "WHITE";
 252                         if (n == 40) return "BLACK";
 253                         if (n == 41) return "BRED";
 254                         if (n == 42) return "BGREEN";
 255                         if (n == 43) return "BYELLOW";
 256                         if (n == 44) return "BBLUE";
 257                         if (n == 45) return "BMAGENTA";
 258                         if (n == 46) return "BCYAN";
 259                         if (n == 47) return "BWHITE";
 260                 }
 261                 {
 262                         while (match($0, /\033\[[0-9;]*m/) != 0) {
 263                                 printf "%s<", substr($0, 1, RSTART-1);
 264                                 codes = substr($0, RSTART+2, RLENGTH-3);
 265                                 if (length(codes) == 0)
 266                                         printf "%s", name(0)
 267                                 else {
 268                                         n = split(codes, ary, ";");
 269                                         sep = "";
 270                                         for (i = 1; i <= n; i++) {
 271                                                 printf "%s%s", sep, name(ary[i]);
 272                                                 sep = ";"
 273                                         }
 274                                 }
 275                                 printf ">";
 276                                 $0 = substr($0, RSTART + RLENGTH, length($0) - RSTART - RLENGTH + 1);
 277                         }
 278                         print
 279                 }
 280         '
 281 }
 282
 283 nul_to_q () {
 284         perl -pe 'y/\000/Q/'
 285 }
 286
 287 q_to_nul () {
 288         perl -pe 'y/Q/\000/'
 289 }
 290
 291 q_to_cr () {
 292         tr Q '\015'
 293 }
 294
 295 q_to_tab () {
 296         tr Q '\011'
 297 }
 298
 299 append_cr () {
 300         sed -e 's/$/Q/' | tr Q '\015'
 301 }
 302
 303 remove_cr () {
 304         tr '\015' Q | sed -e 's/Q$//'
 305 }
 306
 307 # In some bourne shell implementations, the "unset" builtin returns
 308 # nonzero status when a variable to be unset was not set in the first
 309 # place.
 310 #
 311 # Use sane_unset when that should not be considered an error.
 312
 313 sane_unset () {
 314         unset "$@"
 315         return 0
 316 }
 317
 318 test_tick () {
 319         if test -z "${test_tick+set}"
 320         then
 321                 test_tick=1112911993
 322         else
 323                 test_tick=$(($test_tick + 60))
 324         fi
 325         GIT_COMMITTER_DATE="$test_tick -0700"
 326         GIT_AUTHOR_DATE="$test_tick -0700"
 327         export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 328 }
 329
 330 # Call test_commit with the arguments "<message> [<file> [<contents>]]"
 331 #
 332 # This will commit a file with the given contents and the given commit
 333 # message.  It will also add a tag with <message> as name.
 334 #
 335 # Both <file> and <contents> default to <message>.
 336
 337 test_commit () {
 338         file=${2:-"$1.t"}
 339         echo "${3-$1}" > "$file" &&
 340         git add "$file" &&
 341         test_tick &&
 342         git commit -m "$1" &&
 343         git tag "$1"
 344 }
 345
 346 # Call test_merge with the arguments "<message> <commit>", where <commit>
 347 # can be a tag pointing to the commit-to-merge.
 348
 349 test_merge () {
 350         test_tick &&
 351         git merge -m "$1" "$2" &&
 352         git tag "$1"
 353 }
 354
 355 # This function helps systems where core.filemode=false is set.
 356 # Use it instead of plain 'chmod +x' to set or unset the executable bit
 357 # of a file in the working directory and add it to the index.
 358
 359 test_chmod () {
 360         chmod "$@" &&
 361         git update-index --add "--chmod=$@"
 362 }
 363
 364 # Unset a configuration variable, but don't fail if it doesn't exist.
 365 test_unconfig () {
 366         git config --unset-all "$@"
 367         config_status=$?
 368         case "$config_status" in
 369         5) # ok, nothing to unset
 370                 config_status=0
 371                 ;;
 372         esac
 373         return $config_status
 374 }
 375
 376 # Set git config, automatically unsetting it after the test is over.
 377 test_config () {
 378         test_when_finished "test_unconfig '$1'" &&
 379         git config "$@"
 380 }
 381
 382 # Use test_set_prereq to tell that a particular prerequisite is available.
 383 # The prerequisite can later be checked for in two ways:
 384 #
 385 # - Explicitly using test_have_prereq.
 386 #
 387 # - Implicitly by specifying the prerequisite tag in the calls to
 388 #   test_expect_{success,failure,code}.
 389 #
 390 # The single parameter is the prerequisite tag (a simple word, in all
 391 # capital letters by convention).
 392
 393 test_set_prereq () {
 394         satisfied="$satisfied$1 "
 395 }
 396 satisfied=" "
 397
 398 test_have_prereq () {
 399         # prerequisites can be concatenated with ','
 400         save_IFS=$IFS
 401         IFS=,
 402         set -- $*
 403         IFS=$save_IFS
 404
 405         total_prereq=0
 406         ok_prereq=0
 407         missing_prereq=
 408
 409         for prerequisite
 410         do
 411                 total_prereq=$(($total_prereq + 1))
 412                 case $satisfied in
 413                 *" $prerequisite "*)
 414                         ok_prereq=$(($ok_prereq + 1))
 415                         ;;
 416                 *)
 417                         # Keep a list of missing prerequisites
 418                         if test -z "$missing_prereq"
 419                         then
 420                                 missing_prereq=$prerequisite
 421                         else
 422                                 missing_prereq="$prerequisite,$missing_prereq"
 423                         fi
 424                 esac
 425         done
 426
 427         test $total_prereq = $ok_prereq
 428 }
 429
 430 test_declared_prereq () {
 431         case ",$test_prereq," in
 432         *,$1,*)
 433                 return 0
 434                 ;;
 435         esac
 436         return 1
 437 }
 438
 439 # You are not expected to call test_ok_ and test_failure_ directly, use
 440 # the text_expect_* functions instead.
 441
 442 test_ok_ () {
 443         test_success=$(($test_success + 1))
 444         say_color "" "ok $test_count - $@"
 445 }
 446
 447 test_failure_ () {
 448         test_failure=$(($test_failure + 1))
 449         say_color error "not ok - $test_count $1"
 450         shift
 451         echo "$@" | sed -e 's/^/#       /'
 452         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 453 }
 454
 455 test_known_broken_ok_ () {
 456         test_fixed=$(($test_fixed+1))
 457         say_color "" "ok $test_count - $@ # TODO known breakage"
 458 }
 459
 460 test_known_broken_failure_ () {
 461         test_broken=$(($test_broken+1))
 462         say_color skip "not ok $test_count - $@ # TODO known breakage"
 463 }
 464
 465 test_debug () {
 466         test "$debug" = "" || eval "$1"
 467 }
 468
 469 test_eval_ () {
 470         # This is a separate function because some tests use
 471         # "return" to end a test_expect_success block early.
 472         eval >&3 2>&4 "$*"
 473 }
 474
 475 test_run_ () {
 476         test_cleanup=:
 477         expecting_failure=$2
 478         test_eval_ "$1"
 479         eval_ret=$?
 480
 481         if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 482         then
 483                 test_eval_ "$test_cleanup"
 484         fi
 485         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 486                 echo ""
 487         fi
 488         return "$eval_ret"
 489 }
 490
 491 test_skip () {
 492         test_count=$(($test_count+1))
 493         to_skip=
 494         for skp in $GIT_SKIP_TESTS
 495         do
 496                 case $this_test.$test_count in
 497                 $skp)
 498                         to_skip=t
 499                         break
 500                 esac
 501         done
 502         if test -z "$to_skip" && test -n "$test_prereq" &&
 503            ! test_have_prereq "$test_prereq"
 504         then
 505                 to_skip=t
 506         fi
 507         case "$to_skip" in
 508         t)
 509                 of_prereq=
 510                 if test "$missing_prereq" != "$test_prereq"
 511                 then
 512                         of_prereq=" of $test_prereq"
 513                 fi
 514
 515                 say_color skip >&3 "skipping test: $@"
 516                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 517                 : true
 518                 ;;
 519         *)
 520                 false
 521                 ;;
 522         esac
 523 }
 524
 525 test_expect_failure () {
 526         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 527         test "$#" = 2 ||
 528         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 529         export test_prereq
 530         if ! test_skip "$@"
 531         then
 532                 say >&3 "checking known breakage: $2"
 533                 if test_run_ "$2" expecting_failure
 534                 then
 535                         test_known_broken_ok_ "$1"
 536                 else
 537                         test_known_broken_failure_ "$1"
 538                 fi
 539         fi
 540         echo >&3 ""
 541 }
 542
 543 test_expect_success () {
 544         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 545         test "$#" = 2 ||
 546         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 547         export test_prereq
 548         if ! test_skip "$@"
 549         then
 550                 say >&3 "expecting success: $2"
 551                 if test_run_ "$2"
 552                 then
 553                         test_ok_ "$1"
 554                 else
 555                         test_failure_ "$@"
 556                 fi
 557         fi
 558         echo >&3 ""
 559 }
 560
 561 # test_external runs external test scripts that provide continuous
 562 # test output about their progress, and succeeds/fails on
 563 # zero/non-zero exit code.  It outputs the test output on stdout even
 564 # in non-verbose mode, and announces the external script with "# run
 565 # <n>: ..." before running it.  When providing relative paths, keep in
 566 # mind that all scripts run in "trash directory".
 567 # Usage: test_external description command arguments...
 568 # Example: test_external 'Perl API' perl ../path/to/test.pl
 569 test_external () {
 570         test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq=
 571         test "$#" = 3 ||
 572         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 573         descr="$1"
 574         shift
 575         export test_prereq
 576         if ! test_skip "$descr" "$@"
 577         then
 578                 # Announce the script to reduce confusion about the
 579                 # test output that follows.
 580                 say_color "" "# run $test_count: $descr ($*)"
 581                 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG
 582                 # to be able to use them in script
 583                 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG
 584                 # Run command; redirect its stderr to &4 as in
 585                 # test_run_, but keep its stdout on our stdout even in
 586                 # non-verbose mode.
 587                 "$@" 2>&4
 588                 if [ "$?" = 0 ]
 589                 then
 590                         if test $test_external_has_tap -eq 0; then
 591                                 test_ok_ "$descr"
 592                         else
 593                                 say_color "" "# test_external test $descr was ok"
 594                                 test_success=$(($test_success + 1))
 595                         fi
 596                 else
 597                         if test $test_external_has_tap -eq 0; then
 598                                 test_failure_ "$descr" "$@"
 599                         else
 600                                 say_color error "# test_external test $descr failed: $@"
 601                                 test_failure=$(($test_failure + 1))
 602                         fi
 603                 fi
 604         fi
 605 }
 606
 607 # Like test_external, but in addition tests that the command generated
 608 # no output on stderr.
 609 test_external_without_stderr () {
 610         # The temporary file has no (and must have no) security
 611         # implications.
 612         tmp=${TMPDIR:-/tmp}
 613         stderr="$tmp/git-external-stderr.$$.tmp"
 614         test_external "$@" 4> "$stderr"
 615         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 616         descr="no stderr: $1"
 617         shift
 618         say >&3 "# expecting no stderr from previous command"
 619         if [ ! -s "$stderr" ]; then
 620                 rm "$stderr"
 621
 622                 if test $test_external_has_tap -eq 0; then
 623                         test_ok_ "$descr"
 624                 else
 625                         say_color "" "# test_external_without_stderr test $descr was ok"
 626                         test_success=$(($test_success + 1))
 627                 fi
 628         else
 629                 if [ "$verbose" = t ]; then
 630                         output=`echo; echo "# Stderr is:"; cat "$stderr"`
 631                 else
 632                         output=
 633                 fi
 634                 # rm first in case test_failure exits.
 635                 rm "$stderr"
 636                 if test $test_external_has_tap -eq 0; then
 637                         test_failure_ "$descr" "$@" "$output"
 638                 else
 639                         say_color error "# test_external_without_stderr test $descr failed: $@: $output"
 640                         test_failure=$(($test_failure + 1))
 641                 fi
 642         fi
 643 }
 644
 645 # debugging-friendly alternatives to "test [-f|-d|-e]"
 646 # The commands test the existence or non-existence of $1. $2 can be
 647 # given to provide a more precise diagnosis.
 648 test_path_is_file () {
 649         if ! [ -f "$1" ]
 650         then
 651                 echo "File $1 doesn't exist. $*"
 652                 false
 653         fi
 654 }
 655
 656 test_path_is_dir () {
 657         if ! [ -d "$1" ]
 658         then
 659                 echo "Directory $1 doesn't exist. $*"
 660                 false
 661         fi
 662 }
 663
 664 test_path_is_missing () {
 665         if [ -e "$1" ]
 666         then
 667                 echo "Path exists:"
 668                 ls -ld "$1"
 669                 if [ $# -ge 1 ]; then
 670                         echo "$*"
 671                 fi
 672                 false
 673         fi
 674 }
 675
 676 # test_line_count checks that a file has the number of lines it
 677 # ought to. For example:
 678 #
 679 #       test_expect_success 'produce exactly one line of output' '
 680 #               do something >output &&
 681 #               test_line_count = 1 output
 682 #       '
 683 #
 684 # is like "test $(wc -l <output) = 1" except that it passes the
 685 # output through when the number of lines is wrong.
 686
 687 test_line_count () {
 688         if test $# != 3
 689         then
 690                 error "bug in the test script: not 3 parameters to test_line_count"
 691         elif ! test $(wc -l <"$3") "$1" "$2"
 692         then
 693                 echo "test_line_count: line count for $3 !$1 $2"
 694                 cat "$3"
 695                 return 1
 696         fi
 697 }
 698
 699 # This is not among top-level (test_expect_success | test_expect_failure)
 700 # but is a prefix that can be used in the test script, like:
 701 #
 702 #       test_expect_success 'complain and die' '
 703 #           do something &&
 704 #           do something else &&
 705 #           test_must_fail git checkout ../outerspace
 706 #       '
 707 #
 708 # Writing this as "! git checkout ../outerspace" is wrong, because
 709 # the failure could be due to a segv.  We want a controlled failure.
 710
 711 test_must_fail () {
 712         "$@"
 713         exit_code=$?
 714         if test $exit_code = 0; then
 715                 echo >&2 "test_must_fail: command succeeded: $*"
 716                 return 1
 717         elif test $exit_code -gt 129 -a $exit_code -le 192; then
 718                 echo >&2 "test_must_fail: died by signal: $*"
 719                 return 1
 720         elif test $exit_code = 127; then
 721                 echo >&2 "test_must_fail: command not found: $*"
 722                 return 1
 723         fi
 724         return 0
 725 }
 726
 727 # Similar to test_must_fail, but tolerates success, too.  This is
 728 # meant to be used in contexts like:
 729 #
 730 #       test_expect_success 'some command works without configuration' '
 731 #               test_might_fail git config --unset all.configuration &&
 732 #               do something
 733 #       '
 734 #
 735 # Writing "git config --unset all.configuration || :" would be wrong,
 736 # because we want to notice if it fails due to segv.
 737
 738 test_might_fail () {
 739         "$@"
 740         exit_code=$?
 741         if test $exit_code -gt 129 -a $exit_code -le 192; then
 742                 echo >&2 "test_might_fail: died by signal: $*"
 743                 return 1
 744         elif test $exit_code = 127; then
 745                 echo >&2 "test_might_fail: command not found: $*"
 746                 return 1
 747         fi
 748         return 0
 749 }
 750
 751 # Similar to test_must_fail and test_might_fail, but check that a
 752 # given command exited with a given exit code. Meant to be used as:
 753 #
 754 #       test_expect_success 'Merge with d/f conflicts' '
 755 #               test_expect_code 1 git merge "merge msg" B master
 756 #       '
 757
 758 test_expect_code () {
 759         want_code=$1
 760         shift
 761         "$@"
 762         exit_code=$?
 763         if test $exit_code = $want_code
 764         then
 765                 return 0
 766         fi
 767
 768         echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
 769         return 1
 770 }
 771
 772 # test_cmp is a helper function to compare actual and expected output.
 773 # You can use it like:
 774 #
 775 #       test_expect_success 'foo works' '
 776 #               echo expected >expected &&
 777 #               foo >actual &&
 778 #               test_cmp expected actual
 779 #       '
 780 #
 781 # This could be written as either "cmp" or "diff -u", but:
 782 # - cmp's output is not nearly as easy to read as diff -u
 783 # - not all diff versions understand "-u"
 784
 785 test_cmp() {
 786         $GIT_TEST_CMP "$@"
 787 }
 788
 789 # This function can be used to schedule some commands to be run
 790 # unconditionally at the end of the test to restore sanity:
 791 #
 792 #       test_expect_success 'test core.capslock' '
 793 #               git config core.capslock true &&
 794 #               test_when_finished "git config --unset core.capslock" &&
 795 #               hello world
 796 #       '
 797 #
 798 # That would be roughly equivalent to
 799 #
 800 #       test_expect_success 'test core.capslock' '
 801 #               git config core.capslock true &&
 802 #               hello world
 803 #               git config --unset core.capslock
 804 #       '
 805 #
 806 # except that the greeting and config --unset must both succeed for
 807 # the test to pass.
 808 #
 809 # Note that under --immediate mode, no clean-up is done to help diagnose
 810 # what went wrong.
 811
 812 test_when_finished () {
 813         test_cleanup="{ $*
 814                 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 815 }
 816
 817 # Most tests can use the created repository, but some may need to create more.
 818 # Usage: test_create_repo <directory>
 819 test_create_repo () {
 820         test "$#" = 1 ||
 821         error "bug in the test script: not 1 parameter to test-create-repo"
 822         repo="$1"
 823         mkdir -p "$repo"
 824         (
 825                 cd "$repo" || error "Cannot setup test environment"
 826                 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
 827                 error "cannot run git init -- have you built things yet?"
 828                 mv .git/hooks .git/hooks-disabled
 829         ) || exit
 830 }
 831
 832 test_done () {
 833         GIT_EXIT_OK=t
 834
 835         if test -z "$HARNESS_ACTIVE"; then
 836                 test_results_dir="$TEST_DIRECTORY/test-results"
 837                 mkdir -p "$test_results_dir"
 838                 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 839
 840                 cat >>"$test_results_path" <<-EOF
 841                 total $test_count
 842                 success $test_success
 843                 fixed $test_fixed
 844                 broken $test_broken
 845                 failed $test_failure
 846
 847                 EOF
 848         fi
 849
 850         if test "$test_fixed" != 0
 851         then
 852                 say_color pass "# fixed $test_fixed known breakage(s)"
 853         fi
 854         if test "$test_broken" != 0
 855         then
 856                 say_color error "# still have $test_broken known breakage(s)"
 857                 msg="remaining $(($test_count-$test_broken)) test(s)"
 858         else
 859                 msg="$test_count test(s)"
 860         fi
 861         case "$test_failure" in
 862         0)
 863                 # Maybe print SKIP message
 864                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 865
 866                 if test $test_external_has_tap -eq 0; then
 867                         say_color pass "# passed all $msg"
 868                         say "1..$test_count$skip_all"
 869                 fi
 870
 871                 test -d "$remove_trash" &&
 872                 cd "$(dirname "$remove_trash")" &&
 873                 rm -rf "$(basename "$remove_trash")"
 874
 875                 exit 0 ;;
 876
 877         *)
 878                 if test $test_external_has_tap -eq 0; then
 879                         say_color error "# failed $test_failure among $msg"
 880                         say "1..$test_count"
 881                 fi
 882
 883                 exit 1 ;;
 884
 885         esac
 886 }
 887
 888 # Test the binaries we have just built.  The tests are kept in
 889 # t/ subdirectory and are run in 'trash directory' subdirectory.
 890 if test -z "$TEST_DIRECTORY"
 891 then
 892         # We allow tests to override this, in case they want to run tests
 893         # outside of t/, e.g. for running tests on the test library
 894         # itself.
 895         TEST_DIRECTORY=$(pwd)
 896 fi
 897 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
 898
 899 if test -n "$valgrind"
 900 then
 901         make_symlink () {
 902                 test -h "$2" &&
 903                 test "$1" = "$(readlink "$2")" || {
 904                         # be super paranoid
 905                         if mkdir "$2".lock
 906                         then
 907                                 rm -f "$2" &&
 908                                 ln -s "$1" "$2" &&
 909                                 rm -r "$2".lock
 910                         else
 911                                 while test -d "$2".lock
 912                                 do
 913                                         say "Waiting for lock on $2."
 914                                         sleep 1
 915                                 done
 916                         fi
 917                 }
 918         }
 919
 920         make_valgrind_symlink () {
 921                 # handle only executables, unless they are shell libraries that
 922                 # need to be in the exec-path.  We will just use "#!" as a
 923                 # guess for a shell-script, since we have no idea what the user
 924                 # may have configured as the shell path.
 925                 test -x "$1" ||
 926                 test "#!" = "$(head -c 2 <"$1")" ||
 927                 return;
 928
 929                 base=$(basename "$1")
 930                 symlink_target=$GIT_BUILD_DIR/$base
 931                 # do not override scripts
 932                 if test -x "$symlink_target" &&
 933                     test ! -d "$symlink_target" &&
 934                     test "#!" != "$(head -c 2 < "$symlink_target")"
 935                 then
 936                         symlink_target=../valgrind.sh
 937                 fi
 938                 case "$base" in
 939                 *.sh|*.perl)
 940                         symlink_target=../unprocessed-script
 941                 esac
 942                 # create the link, or replace it if it is out of date
 943                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 944         }
 945
 946         # override all git executables in TEST_DIRECTORY/..
 947         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 948         mkdir -p "$GIT_VALGRIND"/bin
 949         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 950         do
 951                 make_valgrind_symlink $file
 952         done
 953         OLDIFS=$IFS
 954         IFS=:
 955         for path in $PATH
 956         do
 957                 ls "$path"/git-* 2> /dev/null |
 958                 while read file
 959                 do
 960                         make_valgrind_symlink "$file"
 961                 done
 962         done
 963         IFS=$OLDIFS
 964         PATH=$GIT_VALGRIND/bin:$PATH
 965         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 966         export GIT_VALGRIND
 967 elif test -n "$GIT_TEST_INSTALLED" ; then
 968         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 969         error "Cannot run git from $GIT_TEST_INSTALLED."
 970         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 971         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 972 else # normal case, use ../bin-wrappers only unless $with_dashes:
 973         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 974         if ! test -x "$git_bin_dir/git" ; then
 975                 if test -z "$with_dashes" ; then
 976                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 977                 fi
 978                 with_dashes=t
 979         fi
 980         PATH="$git_bin_dir:$PATH"
 981         GIT_EXEC_PATH=$GIT_BUILD_DIR
 982         if test -n "$with_dashes" ; then
 983                 PATH="$GIT_BUILD_DIR:$PATH"
 984         fi
 985 fi
 986 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 987 unset GIT_CONFIG
 988 GIT_CONFIG_NOSYSTEM=1
 989 GIT_ATTR_NOSYSTEM=1
 990 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 991
 992 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
 993
 994 if test -z "$GIT_TEST_CMP"
 995 then
 996         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 997         then
 998                 GIT_TEST_CMP="$DIFF -c"
 999         else
1000                 GIT_TEST_CMP="$DIFF -u"
1001         fi
1002 fi
1003
1004 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
1005 export GITPERLLIB
1006 test -d "$GIT_BUILD_DIR"/templates/blt || {
1007         error "You haven't built things yet, have you?"
1008 }
1009
1010 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
1011 then
1012         GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
1013         export GITPYTHONLIB
1014         test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
1015                 error "You haven't built git_remote_helpers yet, have you?"
1016         }
1017 fi
1018
1019 if ! test -x "$GIT_BUILD_DIR"/test-chmtime; then
1020         echo >&2 'You need to build test-chmtime:'
1021         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
1022         exit 1
1023 fi
1024
1025 # Test repository
1026 test="trash directory.$(basename "$0" .sh)"
1027 test -n "$root" && test="$root/$test"
1028 case "$test" in
1029 /*) TRASH_DIRECTORY="$test" ;;
1030  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
1031 esac
1032 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
1033 rm -fr "$test" || {
1034         GIT_EXIT_OK=t
1035         echo >&5 "FATAL: Cannot prepare test area"
1036         exit 1
1037 }
1038
1039 HOME="$TRASH_DIRECTORY"
1040 export HOME
1041
1042 test_create_repo "$test"
1043 # Use -P to resolve symlinks in our working directory so that the cwd
1044 # in subprocesses like git equals our $PWD (for pathname comparisons).
1045 cd -P "$test" || exit 1
1046
1047 this_test=${0##*/}
1048 this_test=${this_test%%-*}
1049 for skp in $GIT_SKIP_TESTS
1050 do
1051         case "$this_test" in
1052         $skp)
1053                 say_color skip >&3 "skipping test $this_test altogether"
1054                 skip_all="skip all tests in $this_test"
1055                 test_done
1056         esac
1057 done
1058
1059 # Provide an implementation of the 'yes' utility
1060 yes () {
1061         if test $# = 0
1062         then
1063                 y=y
1064         else
1065                 y="$*"
1066         fi
1067
1068         while echo "$y"
1069         do
1070                 :
1071         done
1072 }
1073
1074 # Fix some commands on Windows
1075 case $(uname -s) in
1076 *MINGW*)
1077         # Windows has its own (incompatible) sort and find
1078         sort () {
1079                 /usr/bin/sort "$@"
1080         }
1081         find () {
1082                 /usr/bin/find "$@"
1083         }
1084         sum () {
1085                 md5sum "$@"
1086         }
1087         # git sees Windows-style pwd
1088         pwd () {
1089                 builtin pwd -W
1090         }
1091         # no POSIX permissions
1092         # backslashes in pathspec are converted to '/'
1093         # exec does not inherit the PID
1094         test_set_prereq MINGW
1095         test_set_prereq SED_STRIPS_CR
1096         ;;
1097 *CYGWIN*)
1098         test_set_prereq POSIXPERM
1099         test_set_prereq EXECKEEPSPID
1100         test_set_prereq NOT_MINGW
1101         test_set_prereq SED_STRIPS_CR
1102         ;;
1103 *)
1104         test_set_prereq POSIXPERM
1105         test_set_prereq BSLASHPSPEC
1106         test_set_prereq EXECKEEPSPID
1107         test_set_prereq NOT_MINGW
1108         ;;
1109 esac
1110
1111 test -z "$NO_PERL" && test_set_prereq PERL
1112 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1113 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
1114
1115 # Can we rely on git's output in the C locale?
1116 if test -n "$GETTEXT_POISON"
1117 then
1118         GIT_GETTEXT_POISON=YesPlease
1119         export GIT_GETTEXT_POISON
1120 else
1121         test_set_prereq C_LOCALE_OUTPUT
1122 fi
1123
1124 # Use this instead of test_cmp to compare files that contain expected and
1125 # actual output from git commands that can be translated.  When running
1126 # under GETTEXT_POISON this pretends that the command produced expected
1127 # results.
1128 test_i18ncmp () {
1129         test -n "$GETTEXT_POISON" || test_cmp "$@"
1130 }
1131
1132 # Use this instead of "grep expected-string actual" to see if the
1133 # output from a git command that can be translated either contains an
1134 # expected string, or does not contain an unwanted one.  When running
1135 # under GETTEXT_POISON this pretends that the command produced expected
1136 # results.
1137 test_i18ngrep () {
1138         if test -n "$GETTEXT_POISON"
1139         then
1140             : # pretend success
1141         elif test "x!" = "x$1"
1142         then
1143                 shift
1144                 ! grep "$@"
1145         else
1146                 grep "$@"
1147         fi
1148 }
1149
1150 # test whether the filesystem supports symbolic links
1151 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
1152 rm -f y
1153
1154 # When the tests are run as root, permission tests will report that
1155 # things are writable when they shouldn't be.
1156 test -w / || test_set_prereq SANITY