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