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