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 LANGUAGE
  48 unset $(perl -e '
  49         my @env = keys %ENV;
  50         my $ok = join("|", qw(
  51                 TRACE
  52                 DEBUG
  53                 USE_LOOKUP
  54                 TEST
  55                 .*_TEST
  56                 PROVE
  57                 VALGRIND
  58         ));
  59         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  60         print join("\n", @vars);
  61 ')
  62 GIT_AUTHOR_EMAIL=author@example.com
  63 GIT_AUTHOR_NAME='A U Thor'
  64 GIT_COMMITTER_EMAIL=committer@example.com
  65 GIT_COMMITTER_NAME='C O Mitter'
  66 GIT_MERGE_VERBOSITY=5
  67 GIT_MERGE_AUTOEDIT=no
  68 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
  69 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
  70 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
  71 export EDITOR
  72
  73 # Protect ourselves from common misconfiguration to export
  74 # CDPATH into the environment
  75 unset CDPATH
  76
  77 unset GREP_OPTIONS
  78
  79 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
  80         1|2|true)
  81                 echo "* warning: Some tests will not work if GIT_TRACE" \
  82                         "is set as to trace on STDERR ! *"
  83                 echo "* warning: Please set GIT_TRACE to something" \
  84                         "other than 1, 2 or true ! *"
  85                 ;;
  86 esac
  87
  88 # Convenience
  89 #
  90 # A regexp to match 5 and 40 hexdigits
  91 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  92 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
  93
  94 # Zero SHA-1
  95 _z40=0000000000000000000000000000000000000000
  96
  97 # Line feed
  98 LF='
  99 '
 100
 101 # Each test should start with something like this, after copyright notices:
 102 #
 103 # test_description='Description of this test...
 104 # This test checks if command xyzzy does the right thing...
 105 # '
 106 # . ./test-lib.sh
 107 [ "x$ORIGINAL_TERM" != "xdumb" ] && (
 108                 TERM=$ORIGINAL_TERM &&
 109                 export TERM &&
 110                 [ -t 1 ] &&
 111                 tput bold >/dev/null 2>&1 &&
 112                 tput setaf 1 >/dev/null 2>&1 &&
 113                 tput sgr0 >/dev/null 2>&1
 114         ) &&
 115         color=t
 116
 117 while test "$#" -ne 0
 118 do
 119         case "$1" in
 120         -d|--d|--de|--deb|--debu|--debug)
 121                 debug=t; shift ;;
 122         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 123                 immediate=t; shift ;;
 124         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 125                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 126         -h|--h|--he|--hel|--help)
 127                 help=t; shift ;;
 128         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 129                 verbose=t; shift ;;
 130         -q|--q|--qu|--qui|--quie|--quiet)
 131                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 132                 # passed without the ok/not ok details is always an error.
 133                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 134         --with-dashes)
 135                 with_dashes=t; shift ;;
 136         --no-color)
 137                 color=; shift ;;
 138         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 139                 valgrind=t; verbose=t; shift ;;
 140         --tee)
 141                 shift ;; # was handled already
 142         --root=*)
 143                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 144                 shift ;;
 145         *)
 146                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 147         esac
 148 done
 149
 150 if test -n "$color"; then
 151         say_color () {
 152                 (
 153                 TERM=$ORIGINAL_TERM
 154                 export TERM
 155                 case "$1" in
 156                         error) tput bold; tput setaf 1;; # bold red
 157                         skip)  tput bold; tput setaf 2;; # bold green
 158                         pass)  tput setaf 2;;            # green
 159                         info)  tput setaf 3;;            # brown
 160                         *) test -n "$quiet" && return;;
 161                 esac
 162                 shift
 163                 printf "%s" "$*"
 164                 tput sgr0
 165                 echo
 166                 )
 167         }
 168 else
 169         say_color() {
 170                 test -z "$1" && test -n "$quiet" && return
 171                 shift
 172                 echo "$*"
 173         }
 174 fi
 175
 176 error () {
 177         say_color error "error: $*"
 178         GIT_EXIT_OK=t
 179         exit 1
 180 }
 181
 182 say () {
 183         say_color info "$*"
 184 }
 185
 186 test "${test_description}" != "" ||
 187 error "Test script did not set test_description."
 188
 189 if test "$help" = "t"
 190 then
 191         echo "$test_description"
 192         exit 0
 193 fi
 194
 195 exec 5>&1
 196 exec 6<&0
 197 if test "$verbose" = "t"
 198 then
 199         exec 4>&2 3>&1
 200 else
 201         exec 4>/dev/null 3>/dev/null
 202 fi
 203
 204 test_failure=0
 205 test_count=0
 206 test_fixed=0
 207 test_broken=0
 208 test_success=0
 209
 210 test_external_has_tap=0
 211
 212 die () {
 213         code=$?
 214         if test -n "$GIT_EXIT_OK"
 215         then
 216                 exit $code
 217         else
 218                 echo >&5 "FATAL: Unexpected exit with code $code"
 219                 exit 1
 220         fi
 221 }
 222
 223 GIT_EXIT_OK=
 224 trap 'die' EXIT
 225
 226 # The semantics of the editor variables are that of invoking
 227 # sh -c "$EDITOR \"$@\"" files ...
 228 #
 229 # If our trash directory contains shell metacharacters, they will be
 230 # interpreted if we just set $EDITOR directly, so do a little dance with
 231 # environment variables to work around this.
 232 #
 233 # In particular, quoting isn't enough, as the path may contain the same quote
 234 # that we're using.
 235 test_set_editor () {
 236         FAKE_EDITOR="$1"
 237         export FAKE_EDITOR
 238         EDITOR='"$FAKE_EDITOR"'
 239         export EDITOR
 240 }
 241
 242 test_decode_color () {
 243         awk '
 244                 function name(n) {
 245                         if (n == 0) return "RESET";
 246                         if (n == 1) return "BOLD";
 247                         if (n == 30) return "BLACK";
 248                         if (n == 31) return "RED";
 249                         if (n == 32) return "GREEN";
 250                         if (n == 33) return "YELLOW";
 251                         if (n == 34) return "BLUE";
 252                         if (n == 35) return "MAGENTA";
 253                         if (n == 36) return "CYAN";
 254                         if (n == 37) return "WHITE";
 255                         if (n == 40) return "BLACK";
 256                         if (n == 41) return "BRED";
 257                         if (n == 42) return "BGREEN";
 258                         if (n == 43) return "BYELLOW";
 259                         if (n == 44) return "BBLUE";
 260                         if (n == 45) return "BMAGENTA";
 261                         if (n == 46) return "BCYAN";
 262                         if (n == 47) return "BWHITE";
 263                 }
 264                 {
 265                         while (match($0, /\033\[[0-9;]*m/) != 0) {
 266                                 printf "%s<", substr($0, 1, RSTART-1);
 267                                 codes = substr($0, RSTART+2, RLENGTH-3);
 268                                 if (length(codes) == 0)
 269                                         printf "%s", name(0)
 270                                 else {
 271                                         n = split(codes, ary, ";");
 272                                         sep = "";
 273                                         for (i = 1; i <= n; i++) {
 274                                                 printf "%s%s", sep, name(ary[i]);
 275                                                 sep = ";"
 276                                         }
 277                                 }
 278                                 printf ">";
 279                                 $0 = substr($0, RSTART + RLENGTH, length($0) - RSTART - RLENGTH + 1);
 280                         }
 281                         print
 282                 }
 283         '
 284 }
 285
 286 nul_to_q () {
 287         perl -pe 'y/\000/Q/'
 288 }
 289
 290 q_to_nul () {
 291         perl -pe 'y/Q/\000/'
 292 }
 293
 294 q_to_cr () {
 295         tr Q '\015'
 296 }
 297
 298 q_to_tab () {
 299         tr Q '\011'
 300 }
 301
 302 append_cr () {
 303         sed -e 's/$/Q/' | tr Q '\015'
 304 }
 305
 306 remove_cr () {
 307         tr '\015' Q | sed -e 's/Q$//'
 308 }
 309
 310 # In some bourne shell implementations, the "unset" builtin returns
 311 # nonzero status when a variable to be unset was not set in the first
 312 # place.
 313 #
 314 # Use sane_unset when that should not be considered an error.
 315
 316 sane_unset () {
 317         unset "$@"
 318         return 0
 319 }
 320
 321 test_tick () {
 322         if test -z "${test_tick+set}"
 323         then
 324                 test_tick=1112911993
 325         else
 326                 test_tick=$(($test_tick + 60))
 327         fi
 328         GIT_COMMITTER_DATE="$test_tick -0700"
 329         GIT_AUTHOR_DATE="$test_tick -0700"
 330         export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 331 }
 332
 333 # Stop execution and start a shell. This is useful for debugging tests and
 334 # only makes sense together with "-v".
 335 #
 336 # Be sure to remove all invocations of this command before submitting.
 337
 338 test_pause () {
 339         if test "$verbose" = t; then
 340                 "$SHELL_PATH" <&6 >&3 2>&4
 341         else
 342                 error >&5 "test_pause requires --verbose"
 343         fi
 344 }
 345
 346 # Call test_commit with the arguments "<message> [<file> [<contents>]]"
 347 #
 348 # This will commit a file with the given contents and the given commit
 349 # message.  It will also add a tag with <message> as name.
 350 #
 351 # Both <file> and <contents> default to <message>.
 352
 353 test_commit () {
 354         file=${2:-"$1.t"}
 355         echo "${3-$1}" > "$file" &&
 356         git add "$file" &&
 357         test_tick &&
 358         git commit -m "$1" &&
 359         git tag "$1"
 360 }
 361
 362 # Call test_merge with the arguments "<message> <commit>", where <commit>
 363 # can be a tag pointing to the commit-to-merge.
 364
 365 test_merge () {
 366         test_tick &&
 367         git merge -m "$1" "$2" &&
 368         git tag "$1"
 369 }
 370
 371 # This function helps systems where core.filemode=false is set.
 372 # Use it instead of plain 'chmod +x' to set or unset the executable bit
 373 # of a file in the working directory and add it to the index.
 374
 375 test_chmod () {
 376         chmod "$@" &&
 377         git update-index --add "--chmod=$@"
 378 }
 379
 380 # Unset a configuration variable, but don't fail if it doesn't exist.
 381 test_unconfig () {
 382         git config --unset-all "$@"
 383         config_status=$?
 384         case "$config_status" in
 385         5) # ok, nothing to unset
 386                 config_status=0
 387                 ;;
 388         esac
 389         return $config_status
 390 }
 391
 392 # Set git config, automatically unsetting it after the test is over.
 393 test_config () {
 394         test_when_finished "test_unconfig '$1'" &&
 395         git config "$@"
 396 }
 397
 398 test_config_global () {
 399         test_when_finished "test_unconfig --global '$1'" &&
 400         git config --global "$@"
 401 }
 402
 403 # Use test_set_prereq to tell that a particular prerequisite is available.
 404 # The prerequisite can later be checked for in two ways:
 405 #
 406 # - Explicitly using test_have_prereq.
 407 #
 408 # - Implicitly by specifying the prerequisite tag in the calls to
 409 #   test_expect_{success,failure,code}.
 410 #
 411 # The single parameter is the prerequisite tag (a simple word, in all
 412 # capital letters by convention).
 413
 414 test_set_prereq () {
 415         satisfied="$satisfied$1 "
 416 }
 417 satisfied=" "
 418
 419 test_have_prereq () {
 420         # prerequisites can be concatenated with ','
 421         save_IFS=$IFS
 422         IFS=,
 423         set -- $*
 424         IFS=$save_IFS
 425
 426         total_prereq=0
 427         ok_prereq=0
 428         missing_prereq=
 429
 430         for prerequisite
 431         do
 432                 total_prereq=$(($total_prereq + 1))
 433                 case $satisfied in
 434                 *" $prerequisite "*)
 435                         ok_prereq=$(($ok_prereq + 1))
 436                         ;;
 437                 *)
 438                         # Keep a list of missing prerequisites
 439                         if test -z "$missing_prereq"
 440                         then
 441                                 missing_prereq=$prerequisite
 442                         else
 443                                 missing_prereq="$prerequisite,$missing_prereq"
 444                         fi
 445                 esac
 446         done
 447
 448         test $total_prereq = $ok_prereq
 449 }
 450
 451 test_declared_prereq () {
 452         case ",$test_prereq," in
 453         *,$1,*)
 454                 return 0
 455                 ;;
 456         esac
 457         return 1
 458 }
 459
 460 # You are not expected to call test_ok_ and test_failure_ directly, use
 461 # the text_expect_* functions instead.
 462
 463 test_ok_ () {
 464         test_success=$(($test_success + 1))
 465         say_color "" "ok $test_count - $@"
 466 }
 467
 468 test_failure_ () {
 469         test_failure=$(($test_failure + 1))
 470         say_color error "not ok - $test_count $1"
 471         shift
 472         echo "$@" | sed -e 's/^/#       /'
 473         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 474 }
 475
 476 test_known_broken_ok_ () {
 477         test_fixed=$(($test_fixed+1))
 478         say_color "" "ok $test_count - $@ # TODO known breakage"
 479 }
 480
 481 test_known_broken_failure_ () {
 482         test_broken=$(($test_broken+1))
 483         say_color skip "not ok $test_count - $@ # TODO known breakage"
 484 }
 485
 486 test_debug () {
 487         test "$debug" = "" || eval "$1"
 488 }
 489
 490 test_eval_ () {
 491         # This is a separate function because some tests use
 492         # "return" to end a test_expect_success block early.
 493         eval </dev/null >&3 2>&4 "$*"
 494 }
 495
 496 test_run_ () {
 497         test_cleanup=:
 498         expecting_failure=$2
 499         test_eval_ "$1"
 500         eval_ret=$?
 501
 502         if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 503         then
 504                 test_eval_ "$test_cleanup"
 505         fi
 506         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 507                 echo ""
 508         fi
 509         return "$eval_ret"
 510 }
 511
 512 test_skip () {
 513         test_count=$(($test_count+1))
 514         to_skip=
 515         for skp in $GIT_SKIP_TESTS
 516         do
 517                 case $this_test.$test_count in
 518                 $skp)
 519                         to_skip=t
 520                         break
 521                 esac
 522         done
 523         if test -z "$to_skip" && test -n "$test_prereq" &&
 524            ! test_have_prereq "$test_prereq"
 525         then
 526                 to_skip=t
 527         fi
 528         case "$to_skip" in
 529         t)
 530                 of_prereq=
 531                 if test "$missing_prereq" != "$test_prereq"
 532                 then
 533                         of_prereq=" of $test_prereq"
 534                 fi
 535
 536                 say_color skip >&3 "skipping test: $@"
 537                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 538                 : true
 539                 ;;
 540         *)
 541                 false
 542                 ;;
 543         esac
 544 }
 545
 546 test_expect_failure () {
 547         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 548         test "$#" = 2 ||
 549         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 550         export test_prereq
 551         if ! test_skip "$@"
 552         then
 553                 say >&3 "checking known breakage: $2"
 554                 if test_run_ "$2" expecting_failure
 555                 then
 556                         test_known_broken_ok_ "$1"
 557                 else
 558                         test_known_broken_failure_ "$1"
 559                 fi
 560         fi
 561         echo >&3 ""
 562 }
 563
 564 test_expect_success () {
 565         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 566         test "$#" = 2 ||
 567         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 568         export test_prereq
 569         if ! test_skip "$@"
 570         then
 571                 say >&3 "expecting success: $2"
 572                 if test_run_ "$2"
 573                 then
 574                         test_ok_ "$1"
 575                 else
 576                         test_failure_ "$@"
 577                 fi
 578         fi
 579         echo >&3 ""
 580 }
 581
 582 # test_external runs external test scripts that provide continuous
 583 # test output about their progress, and succeeds/fails on
 584 # zero/non-zero exit code.  It outputs the test output on stdout even
 585 # in non-verbose mode, and announces the external script with "# run
 586 # <n>: ..." before running it.  When providing relative paths, keep in
 587 # mind that all scripts run in "trash directory".
 588 # Usage: test_external description command arguments...
 589 # Example: test_external 'Perl API' perl ../path/to/test.pl
 590 test_external () {
 591         test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq=
 592         test "$#" = 3 ||
 593         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 594         descr="$1"
 595         shift
 596         export test_prereq
 597         if ! test_skip "$descr" "$@"
 598         then
 599                 # Announce the script to reduce confusion about the
 600                 # test output that follows.
 601                 say_color "" "# run $test_count: $descr ($*)"
 602                 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG
 603                 # to be able to use them in script
 604                 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG
 605                 # Run command; redirect its stderr to &4 as in
 606                 # test_run_, but keep its stdout on our stdout even in
 607                 # non-verbose mode.
 608                 "$@" 2>&4
 609                 if [ "$?" = 0 ]
 610                 then
 611                         if test $test_external_has_tap -eq 0; then
 612                                 test_ok_ "$descr"
 613                         else
 614                                 say_color "" "# test_external test $descr was ok"
 615                                 test_success=$(($test_success + 1))
 616                         fi
 617                 else
 618                         if test $test_external_has_tap -eq 0; then
 619                                 test_failure_ "$descr" "$@"
 620                         else
 621                                 say_color error "# test_external test $descr failed: $@"
 622                                 test_failure=$(($test_failure + 1))
 623                         fi
 624                 fi
 625         fi
 626 }
 627
 628 # Like test_external, but in addition tests that the command generated
 629 # no output on stderr.
 630 test_external_without_stderr () {
 631         # The temporary file has no (and must have no) security
 632         # implications.
 633         tmp=${TMPDIR:-/tmp}
 634         stderr="$tmp/git-external-stderr.$$.tmp"
 635         test_external "$@" 4> "$stderr"
 636         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 637         descr="no stderr: $1"
 638         shift
 639         say >&3 "# expecting no stderr from previous command"
 640         if [ ! -s "$stderr" ]; then
 641                 rm "$stderr"
 642
 643                 if test $test_external_has_tap -eq 0; then
 644                         test_ok_ "$descr"
 645                 else
 646                         say_color "" "# test_external_without_stderr test $descr was ok"
 647                         test_success=$(($test_success + 1))
 648                 fi
 649         else
 650                 if [ "$verbose" = t ]; then
 651                         output=`echo; echo "# Stderr is:"; cat "$stderr"`
 652                 else
 653                         output=
 654                 fi
 655                 # rm first in case test_failure exits.
 656                 rm "$stderr"
 657                 if test $test_external_has_tap -eq 0; then
 658                         test_failure_ "$descr" "$@" "$output"
 659                 else
 660                         say_color error "# test_external_without_stderr test $descr failed: $@: $output"
 661                         test_failure=$(($test_failure + 1))
 662                 fi
 663         fi
 664 }
 665
 666 # debugging-friendly alternatives to "test [-f|-d|-e]"
 667 # The commands test the existence or non-existence of $1. $2 can be
 668 # given to provide a more precise diagnosis.
 669 test_path_is_file () {
 670         if ! [ -f "$1" ]
 671         then
 672                 echo "File $1 doesn't exist. $*"
 673                 false
 674         fi
 675 }
 676
 677 test_path_is_dir () {
 678         if ! [ -d "$1" ]
 679         then
 680                 echo "Directory $1 doesn't exist. $*"
 681                 false
 682         fi
 683 }
 684
 685 test_path_is_missing () {
 686         if [ -e "$1" ]
 687         then
 688                 echo "Path exists:"
 689                 ls -ld "$1"
 690                 if [ $# -ge 1 ]; then
 691                         echo "$*"
 692                 fi
 693                 false
 694         fi
 695 }
 696
 697 # test_line_count checks that a file has the number of lines it
 698 # ought to. For example:
 699 #
 700 #       test_expect_success 'produce exactly one line of output' '
 701 #               do something >output &&
 702 #               test_line_count = 1 output
 703 #       '
 704 #
 705 # is like "test $(wc -l <output) = 1" except that it passes the
 706 # output through when the number of lines is wrong.
 707
 708 test_line_count () {
 709         if test $# != 3
 710         then
 711                 error "bug in the test script: not 3 parameters to test_line_count"
 712         elif ! test $(wc -l <"$3") "$1" "$2"
 713         then
 714                 echo "test_line_count: line count for $3 !$1 $2"
 715                 cat "$3"
 716                 return 1
 717         fi
 718 }
 719
 720 # This is not among top-level (test_expect_success | test_expect_failure)
 721 # but is a prefix that can be used in the test script, like:
 722 #
 723 #       test_expect_success 'complain and die' '
 724 #           do something &&
 725 #           do something else &&
 726 #           test_must_fail git checkout ../outerspace
 727 #       '
 728 #
 729 # Writing this as "! git checkout ../outerspace" is wrong, because
 730 # the failure could be due to a segv.  We want a controlled failure.
 731
 732 test_must_fail () {
 733         "$@"
 734         exit_code=$?
 735         if test $exit_code = 0; then
 736                 echo >&2 "test_must_fail: command succeeded: $*"
 737                 return 1
 738         elif test $exit_code -gt 129 -a $exit_code -le 192; then
 739                 echo >&2 "test_must_fail: died by signal: $*"
 740                 return 1
 741         elif test $exit_code = 127; then
 742                 echo >&2 "test_must_fail: command not found: $*"
 743                 return 1
 744         fi
 745         return 0
 746 }
 747
 748 # Similar to test_must_fail, but tolerates success, too.  This is
 749 # meant to be used in contexts like:
 750 #
 751 #       test_expect_success 'some command works without configuration' '
 752 #               test_might_fail git config --unset all.configuration &&
 753 #               do something
 754 #       '
 755 #
 756 # Writing "git config --unset all.configuration || :" would be wrong,
 757 # because we want to notice if it fails due to segv.
 758
 759 test_might_fail () {
 760         "$@"
 761         exit_code=$?
 762         if test $exit_code -gt 129 -a $exit_code -le 192; then
 763                 echo >&2 "test_might_fail: died by signal: $*"
 764                 return 1
 765         elif test $exit_code = 127; then
 766                 echo >&2 "test_might_fail: command not found: $*"
 767                 return 1
 768         fi
 769         return 0
 770 }
 771
 772 # Similar to test_must_fail and test_might_fail, but check that a
 773 # given command exited with a given exit code. Meant to be used as:
 774 #
 775 #       test_expect_success 'Merge with d/f conflicts' '
 776 #               test_expect_code 1 git merge "merge msg" B master
 777 #       '
 778
 779 test_expect_code () {
 780         want_code=$1
 781         shift
 782         "$@"
 783         exit_code=$?
 784         if test $exit_code = $want_code
 785         then
 786                 return 0
 787         fi
 788
 789         echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
 790         return 1
 791 }
 792
 793 # test_cmp is a helper function to compare actual and expected output.
 794 # You can use it like:
 795 #
 796 #       test_expect_success 'foo works' '
 797 #               echo expected >expected &&
 798 #               foo >actual &&
 799 #               test_cmp expected actual
 800 #       '
 801 #
 802 # This could be written as either "cmp" or "diff -u", but:
 803 # - cmp's output is not nearly as easy to read as diff -u
 804 # - not all diff versions understand "-u"
 805
 806 test_cmp() {
 807         $GIT_TEST_CMP "$@"
 808 }
 809
 810 # This function can be used to schedule some commands to be run
 811 # unconditionally at the end of the test to restore sanity:
 812 #
 813 #       test_expect_success 'test core.capslock' '
 814 #               git config core.capslock true &&
 815 #               test_when_finished "git config --unset core.capslock" &&
 816 #               hello world
 817 #       '
 818 #
 819 # That would be roughly equivalent to
 820 #
 821 #       test_expect_success 'test core.capslock' '
 822 #               git config core.capslock true &&
 823 #               hello world
 824 #               git config --unset core.capslock
 825 #       '
 826 #
 827 # except that the greeting and config --unset must both succeed for
 828 # the test to pass.
 829 #
 830 # Note that under --immediate mode, no clean-up is done to help diagnose
 831 # what went wrong.
 832
 833 test_when_finished () {
 834         test_cleanup="{ $*
 835                 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 836 }
 837
 838 # Most tests can use the created repository, but some may need to create more.
 839 # Usage: test_create_repo <directory>
 840 test_create_repo () {
 841         test "$#" = 1 ||
 842         error "bug in the test script: not 1 parameter to test-create-repo"
 843         repo="$1"
 844         mkdir -p "$repo"
 845         (
 846                 cd "$repo" || error "Cannot setup test environment"
 847                 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
 848                 error "cannot run git init -- have you built things yet?"
 849                 mv .git/hooks .git/hooks-disabled
 850         ) || exit
 851 }
 852
 853 test_done () {
 854         GIT_EXIT_OK=t
 855
 856         if test -z "$HARNESS_ACTIVE"; then
 857                 test_results_dir="$TEST_DIRECTORY/test-results"
 858                 mkdir -p "$test_results_dir"
 859                 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 860
 861                 cat >>"$test_results_path" <<-EOF
 862                 total $test_count
 863                 success $test_success
 864                 fixed $test_fixed
 865                 broken $test_broken
 866                 failed $test_failure
 867
 868                 EOF
 869         fi
 870
 871         if test "$test_fixed" != 0
 872         then
 873                 say_color pass "# fixed $test_fixed known breakage(s)"
 874         fi
 875         if test "$test_broken" != 0
 876         then
 877                 say_color error "# still have $test_broken known breakage(s)"
 878                 msg="remaining $(($test_count-$test_broken)) test(s)"
 879         else
 880                 msg="$test_count test(s)"
 881         fi
 882         case "$test_failure" in
 883         0)
 884                 # Maybe print SKIP message
 885                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 886
 887                 if test $test_external_has_tap -eq 0; then
 888                         say_color pass "# passed all $msg"
 889                         say "1..$test_count$skip_all"
 890                 fi
 891
 892                 test -d "$remove_trash" &&
 893                 cd "$(dirname "$remove_trash")" &&
 894                 rm -rf "$(basename "$remove_trash")"
 895
 896                 exit 0 ;;
 897
 898         *)
 899                 if test $test_external_has_tap -eq 0; then
 900                         say_color error "# failed $test_failure among $msg"
 901                         say "1..$test_count"
 902                 fi
 903
 904                 exit 1 ;;
 905
 906         esac
 907 }
 908
 909 # Test the binaries we have just built.  The tests are kept in
 910 # t/ subdirectory and are run in 'trash directory' subdirectory.
 911 if test -z "$TEST_DIRECTORY"
 912 then
 913         # We allow tests to override this, in case they want to run tests
 914         # outside of t/, e.g. for running tests on the test library
 915         # itself.
 916         TEST_DIRECTORY=$(pwd)
 917 fi
 918 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
 919
 920 if test -n "$valgrind"
 921 then
 922         make_symlink () {
 923                 test -h "$2" &&
 924                 test "$1" = "$(readlink "$2")" || {
 925                         # be super paranoid
 926                         if mkdir "$2".lock
 927                         then
 928                                 rm -f "$2" &&
 929                                 ln -s "$1" "$2" &&
 930                                 rm -r "$2".lock
 931                         else
 932                                 while test -d "$2".lock
 933                                 do
 934                                         say "Waiting for lock on $2."
 935                                         sleep 1
 936                                 done
 937                         fi
 938                 }
 939         }
 940
 941         make_valgrind_symlink () {
 942                 # handle only executables, unless they are shell libraries that
 943                 # need to be in the exec-path.  We will just use "#!" as a
 944                 # guess for a shell-script, since we have no idea what the user
 945                 # may have configured as the shell path.
 946                 test -x "$1" ||
 947                 test "#!" = "$(head -c 2 <"$1")" ||
 948                 return;
 949
 950                 base=$(basename "$1")
 951                 symlink_target=$GIT_BUILD_DIR/$base
 952                 # do not override scripts
 953                 if test -x "$symlink_target" &&
 954                     test ! -d "$symlink_target" &&
 955                     test "#!" != "$(head -c 2 < "$symlink_target")"
 956                 then
 957                         symlink_target=../valgrind.sh
 958                 fi
 959                 case "$base" in
 960                 *.sh|*.perl)
 961                         symlink_target=../unprocessed-script
 962                 esac
 963                 # create the link, or replace it if it is out of date
 964                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 965         }
 966
 967         # override all git executables in TEST_DIRECTORY/..
 968         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 969         mkdir -p "$GIT_VALGRIND"/bin
 970         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 971         do
 972                 make_valgrind_symlink $file
 973         done
 974         # special-case the mergetools loadables
 975         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 976         OLDIFS=$IFS
 977         IFS=:
 978         for path in $PATH
 979         do
 980                 ls "$path"/git-* 2> /dev/null |
 981                 while read file
 982                 do
 983                         make_valgrind_symlink "$file"
 984                 done
 985         done
 986         IFS=$OLDIFS
 987         PATH=$GIT_VALGRIND/bin:$PATH
 988         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 989         export GIT_VALGRIND
 990 elif test -n "$GIT_TEST_INSTALLED" ; then
 991         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 992         error "Cannot run git from $GIT_TEST_INSTALLED."
 993         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 994         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 995 else # normal case, use ../bin-wrappers only unless $with_dashes:
 996         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 997         if ! test -x "$git_bin_dir/git" ; then
 998                 if test -z "$with_dashes" ; then
 999                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
1000                 fi
1001                 with_dashes=t
1002         fi
1003         PATH="$git_bin_dir:$PATH"
1004         GIT_EXEC_PATH=$GIT_BUILD_DIR
1005         if test -n "$with_dashes" ; then
1006                 PATH="$GIT_BUILD_DIR:$PATH"
1007         fi
1008 fi
1009 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
1010 unset GIT_CONFIG
1011 GIT_CONFIG_NOSYSTEM=1
1012 GIT_ATTR_NOSYSTEM=1
1013 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
1014
1015 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
1016
1017 if test -z "$GIT_TEST_CMP"
1018 then
1019         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
1020         then
1021                 GIT_TEST_CMP="$DIFF -c"
1022         else
1023                 GIT_TEST_CMP="$DIFF -u"
1024         fi
1025 fi
1026
1027 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
1028 export GITPERLLIB
1029 test -d "$GIT_BUILD_DIR"/templates/blt || {
1030         error "You haven't built things yet, have you?"
1031 }
1032
1033 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
1034 then
1035         GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
1036         export GITPYTHONLIB
1037         test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
1038                 error "You haven't built git_remote_helpers yet, have you?"
1039         }
1040 fi
1041
1042 if ! test -x "$GIT_BUILD_DIR"/test-chmtime; then
1043         echo >&2 'You need to build test-chmtime:'
1044         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
1045         exit 1
1046 fi
1047
1048 # Test repository
1049 test="trash directory.$(basename "$0" .sh)"
1050 test -n "$root" && test="$root/$test"
1051 case "$test" in
1052 /*) TRASH_DIRECTORY="$test" ;;
1053  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
1054 esac
1055 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
1056 rm -fr "$test" || {
1057         GIT_EXIT_OK=t
1058         echo >&5 "FATAL: Cannot prepare test area"
1059         exit 1
1060 }
1061
1062 HOME="$TRASH_DIRECTORY"
1063 export HOME
1064
1065 test_create_repo "$test"
1066 # Use -P to resolve symlinks in our working directory so that the cwd
1067 # in subprocesses like git equals our $PWD (for pathname comparisons).
1068 cd -P "$test" || exit 1
1069
1070 this_test=${0##*/}
1071 this_test=${this_test%%-*}
1072 for skp in $GIT_SKIP_TESTS
1073 do
1074         case "$this_test" in
1075         $skp)
1076                 say_color skip >&3 "skipping test $this_test altogether"
1077                 skip_all="skip all tests in $this_test"
1078                 test_done
1079         esac
1080 done
1081
1082 # Provide an implementation of the 'yes' utility
1083 yes () {
1084         if test $# = 0
1085         then
1086                 y=y
1087         else
1088                 y="$*"
1089         fi
1090
1091         while echo "$y"
1092         do
1093                 :
1094         done
1095 }
1096
1097 # Fix some commands on Windows
1098 case $(uname -s) in
1099 *MINGW*)
1100         # Windows has its own (incompatible) sort and find
1101         sort () {
1102                 /usr/bin/sort "$@"
1103         }
1104         find () {
1105                 /usr/bin/find "$@"
1106         }
1107         sum () {
1108                 md5sum "$@"
1109         }
1110         # git sees Windows-style pwd
1111         pwd () {
1112                 builtin pwd -W
1113         }
1114         # no POSIX permissions
1115         # backslashes in pathspec are converted to '/'
1116         # exec does not inherit the PID
1117         test_set_prereq MINGW
1118         test_set_prereq SED_STRIPS_CR
1119         ;;
1120 *CYGWIN*)
1121         test_set_prereq POSIXPERM
1122         test_set_prereq EXECKEEPSPID
1123         test_set_prereq NOT_MINGW
1124         test_set_prereq SED_STRIPS_CR
1125         ;;
1126 *)
1127         test_set_prereq POSIXPERM
1128         test_set_prereq BSLASHPSPEC
1129         test_set_prereq EXECKEEPSPID
1130         test_set_prereq NOT_MINGW
1131         ;;
1132 esac
1133
1134 test -z "$NO_PERL" && test_set_prereq PERL
1135 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1136 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
1137 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1138
1139 # Can we rely on git's output in the C locale?
1140 if test -n "$GETTEXT_POISON"
1141 then
1142         GIT_GETTEXT_POISON=YesPlease
1143         export GIT_GETTEXT_POISON
1144         test_set_prereq GETTEXT_POISON
1145 else
1146         test_set_prereq C_LOCALE_OUTPUT
1147 fi
1148
1149 # Use this instead of test_cmp to compare files that contain expected and
1150 # actual output from git commands that can be translated.  When running
1151 # under GETTEXT_POISON this pretends that the command produced expected
1152 # results.
1153 test_i18ncmp () {
1154         test -n "$GETTEXT_POISON" || test_cmp "$@"
1155 }
1156
1157 # Use this instead of "grep expected-string actual" to see if the
1158 # output from a git command that can be translated either contains an
1159 # expected string, or does not contain an unwanted one.  When running
1160 # under GETTEXT_POISON this pretends that the command produced expected
1161 # results.
1162 test_i18ngrep () {
1163         if test -n "$GETTEXT_POISON"
1164         then
1165             : # pretend success
1166         elif test "x!" = "x$1"
1167         then
1168                 shift
1169                 ! grep "$@"
1170         else
1171                 grep "$@"
1172         fi
1173 }
1174
1175 # test whether the filesystem supports symbolic links
1176 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
1177 rm -f y
1178
1179 # When the tests are run as root, permission tests will report that
1180 # things are writable when they shouldn't be.
1181 test -w / || test_set_prereq SANITY