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