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
 385 test_config_global () {
 386         test_when_finished "test_unconfig --global '$1'" &&
 387         git config --global "$@"
 388 }
 389
 390 write_script () {
 391         {
 392                 echo "#!${2-"$SHELL_PATH"}" &&
 393                 cat
 394         } >"$1" &&
 395         chmod +x "$1"
 396 }
 397
 398 # Use test_set_prereq to tell that a particular prerequisite is available.
 399 # The prerequisite can later be checked for in two ways:
 400 #
 401 # - Explicitly using test_have_prereq.
 402 #
 403 # - Implicitly by specifying the prerequisite tag in the calls to
 404 #   test_expect_{success,failure,code}.
 405 #
 406 # The single parameter is the prerequisite tag (a simple word, in all
 407 # capital letters by convention).
 408
 409 test_set_prereq () {
 410         satisfied="$satisfied$1 "
 411 }
 412 satisfied=" "
 413
 414 test_have_prereq () {
 415         # prerequisites can be concatenated with ','
 416         save_IFS=$IFS
 417         IFS=,
 418         set -- $*
 419         IFS=$save_IFS
 420
 421         total_prereq=0
 422         ok_prereq=0
 423         missing_prereq=
 424
 425         for prerequisite
 426         do
 427                 total_prereq=$(($total_prereq + 1))
 428                 case $satisfied in
 429                 *" $prerequisite "*)
 430                         ok_prereq=$(($ok_prereq + 1))
 431                         ;;
 432                 *)
 433                         # Keep a list of missing prerequisites
 434                         if test -z "$missing_prereq"
 435                         then
 436                                 missing_prereq=$prerequisite
 437                         else
 438                                 missing_prereq="$prerequisite,$missing_prereq"
 439                         fi
 440                 esac
 441         done
 442
 443         test $total_prereq = $ok_prereq
 444 }
 445
 446 test_declared_prereq () {
 447         case ",$test_prereq," in
 448         *,$1,*)
 449                 return 0
 450                 ;;
 451         esac
 452         return 1
 453 }
 454
 455 # You are not expected to call test_ok_ and test_failure_ directly, use
 456 # the text_expect_* functions instead.
 457
 458 test_ok_ () {
 459         test_success=$(($test_success + 1))
 460         say_color "" "ok $test_count - $@"
 461 }
 462
 463 test_failure_ () {
 464         test_failure=$(($test_failure + 1))
 465         say_color error "not ok - $test_count $1"
 466         shift
 467         echo "$@" | sed -e 's/^/#       /'
 468         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 469 }
 470
 471 test_known_broken_ok_ () {
 472         test_fixed=$(($test_fixed+1))
 473         say_color "" "ok $test_count - $@ # TODO known breakage"
 474 }
 475
 476 test_known_broken_failure_ () {
 477         test_broken=$(($test_broken+1))
 478         say_color skip "not ok $test_count - $@ # TODO known breakage"
 479 }
 480
 481 test_debug () {
 482         test "$debug" = "" || eval "$1"
 483 }
 484
 485 test_eval_ () {
 486         # This is a separate function because some tests use
 487         # "return" to end a test_expect_success block early.
 488         eval </dev/null >&3 2>&4 "$*"
 489 }
 490
 491 test_run_ () {
 492         test_cleanup=:
 493         expecting_failure=$2
 494         test_eval_ "$1"
 495         eval_ret=$?
 496
 497         if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 498         then
 499                 test_eval_ "$test_cleanup"
 500         fi
 501         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 502                 echo ""
 503         fi
 504         return "$eval_ret"
 505 }
 506
 507 test_skip () {
 508         test_count=$(($test_count+1))
 509         to_skip=
 510         for skp in $GIT_SKIP_TESTS
 511         do
 512                 case $this_test.$test_count in
 513                 $skp)
 514                         to_skip=t
 515                         break
 516                 esac
 517         done
 518         if test -z "$to_skip" && test -n "$test_prereq" &&
 519            ! test_have_prereq "$test_prereq"
 520         then
 521                 to_skip=t
 522         fi
 523         case "$to_skip" in
 524         t)
 525                 of_prereq=
 526                 if test "$missing_prereq" != "$test_prereq"
 527                 then
 528                         of_prereq=" of $test_prereq"
 529                 fi
 530
 531                 say_color skip >&3 "skipping test: $@"
 532                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 533                 : true
 534                 ;;
 535         *)
 536                 false
 537                 ;;
 538         esac
 539 }
 540
 541 test_expect_failure () {
 542         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 543         test "$#" = 2 ||
 544         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 545         export test_prereq
 546         if ! test_skip "$@"
 547         then
 548                 say >&3 "checking known breakage: $2"
 549                 if test_run_ "$2" expecting_failure
 550                 then
 551                         test_known_broken_ok_ "$1"
 552                 else
 553                         test_known_broken_failure_ "$1"
 554                 fi
 555         fi
 556         echo >&3 ""
 557 }
 558
 559 test_expect_success () {
 560         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 561         test "$#" = 2 ||
 562         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 563         export test_prereq
 564         if ! test_skip "$@"
 565         then
 566                 say >&3 "expecting success: $2"
 567                 if test_run_ "$2"
 568                 then
 569                         test_ok_ "$1"
 570                 else
 571                         test_failure_ "$@"
 572                 fi
 573         fi
 574         echo >&3 ""
 575 }
 576
 577 # test_external runs external test scripts that provide continuous
 578 # test output about their progress, and succeeds/fails on
 579 # zero/non-zero exit code.  It outputs the test output on stdout even
 580 # in non-verbose mode, and announces the external script with "# run
 581 # <n>: ..." before running it.  When providing relative paths, keep in
 582 # mind that all scripts run in "trash directory".
 583 # Usage: test_external description command arguments...
 584 # Example: test_external 'Perl API' perl ../path/to/test.pl
 585 test_external () {
 586         test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq=
 587         test "$#" = 3 ||
 588         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 589         descr="$1"
 590         shift
 591         export test_prereq
 592         if ! test_skip "$descr" "$@"
 593         then
 594                 # Announce the script to reduce confusion about the
 595                 # test output that follows.
 596                 say_color "" "# run $test_count: $descr ($*)"
 597                 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG
 598                 # to be able to use them in script
 599                 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG
 600                 # Run command; redirect its stderr to &4 as in
 601                 # test_run_, but keep its stdout on our stdout even in
 602                 # non-verbose mode.
 603                 "$@" 2>&4
 604                 if [ "$?" = 0 ]
 605                 then
 606                         if test $test_external_has_tap -eq 0; then
 607                                 test_ok_ "$descr"
 608                         else
 609                                 say_color "" "# test_external test $descr was ok"
 610                                 test_success=$(($test_success + 1))
 611                         fi
 612                 else
 613                         if test $test_external_has_tap -eq 0; then
 614                                 test_failure_ "$descr" "$@"
 615                         else
 616                                 say_color error "# test_external test $descr failed: $@"
 617                                 test_failure=$(($test_failure + 1))
 618                         fi
 619                 fi
 620         fi
 621 }
 622
 623 # Like test_external, but in addition tests that the command generated
 624 # no output on stderr.
 625 test_external_without_stderr () {
 626         # The temporary file has no (and must have no) security
 627         # implications.
 628         tmp=${TMPDIR:-/tmp}
 629         stderr="$tmp/git-external-stderr.$$.tmp"
 630         test_external "$@" 4> "$stderr"
 631         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 632         descr="no stderr: $1"
 633         shift
 634         say >&3 "# expecting no stderr from previous command"
 635         if [ ! -s "$stderr" ]; then
 636                 rm "$stderr"
 637
 638                 if test $test_external_has_tap -eq 0; then
 639                         test_ok_ "$descr"
 640                 else
 641                         say_color "" "# test_external_without_stderr test $descr was ok"
 642                         test_success=$(($test_success + 1))
 643                 fi
 644         else
 645                 if [ "$verbose" = t ]; then
 646                         output=`echo; echo "# Stderr is:"; cat "$stderr"`
 647                 else
 648                         output=
 649                 fi
 650                 # rm first in case test_failure exits.
 651                 rm "$stderr"
 652                 if test $test_external_has_tap -eq 0; then
 653                         test_failure_ "$descr" "$@" "$output"
 654                 else
 655                         say_color error "# test_external_without_stderr test $descr failed: $@: $output"
 656                         test_failure=$(($test_failure + 1))
 657                 fi
 658         fi
 659 }
 660
 661 # debugging-friendly alternatives to "test [-f|-d|-e]"
 662 # The commands test the existence or non-existence of $1. $2 can be
 663 # given to provide a more precise diagnosis.
 664 test_path_is_file () {
 665         if ! [ -f "$1" ]
 666         then
 667                 echo "File $1 doesn't exist. $*"
 668                 false
 669         fi
 670 }
 671
 672 test_path_is_dir () {
 673         if ! [ -d "$1" ]
 674         then
 675                 echo "Directory $1 doesn't exist. $*"
 676                 false
 677         fi
 678 }
 679
 680 test_path_is_missing () {
 681         if [ -e "$1" ]
 682         then
 683                 echo "Path exists:"
 684                 ls -ld "$1"
 685                 if [ $# -ge 1 ]; then
 686                         echo "$*"
 687                 fi
 688                 false
 689         fi
 690 }
 691
 692 # test_line_count checks that a file has the number of lines it
 693 # ought to. For example:
 694 #
 695 #       test_expect_success 'produce exactly one line of output' '
 696 #               do something >output &&
 697 #               test_line_count = 1 output
 698 #       '
 699 #
 700 # is like "test $(wc -l <output) = 1" except that it passes the
 701 # output through when the number of lines is wrong.
 702
 703 test_line_count () {
 704         if test $# != 3
 705         then
 706                 error "bug in the test script: not 3 parameters to test_line_count"
 707         elif ! test $(wc -l <"$3") "$1" "$2"
 708         then
 709                 echo "test_line_count: line count for $3 !$1 $2"
 710                 cat "$3"
 711                 return 1
 712         fi
 713 }
 714
 715 # This is not among top-level (test_expect_success | test_expect_failure)
 716 # but is a prefix that can be used in the test script, like:
 717 #
 718 #       test_expect_success 'complain and die' '
 719 #           do something &&
 720 #           do something else &&
 721 #           test_must_fail git checkout ../outerspace
 722 #       '
 723 #
 724 # Writing this as "! git checkout ../outerspace" is wrong, because
 725 # the failure could be due to a segv.  We want a controlled failure.
 726
 727 test_must_fail () {
 728         "$@"
 729         exit_code=$?
 730         if test $exit_code = 0; then
 731                 echo >&2 "test_must_fail: command succeeded: $*"
 732                 return 1
 733         elif test $exit_code -gt 129 -a $exit_code -le 192; then
 734                 echo >&2 "test_must_fail: died by signal: $*"
 735                 return 1
 736         elif test $exit_code = 127; then
 737                 echo >&2 "test_must_fail: command not found: $*"
 738                 return 1
 739         fi
 740         return 0
 741 }
 742
 743 # Similar to test_must_fail, but tolerates success, too.  This is
 744 # meant to be used in contexts like:
 745 #
 746 #       test_expect_success 'some command works without configuration' '
 747 #               test_might_fail git config --unset all.configuration &&
 748 #               do something
 749 #       '
 750 #
 751 # Writing "git config --unset all.configuration || :" would be wrong,
 752 # because we want to notice if it fails due to segv.
 753
 754 test_might_fail () {
 755         "$@"
 756         exit_code=$?
 757         if test $exit_code -gt 129 -a $exit_code -le 192; then
 758                 echo >&2 "test_might_fail: died by signal: $*"
 759                 return 1
 760         elif test $exit_code = 127; then
 761                 echo >&2 "test_might_fail: command not found: $*"
 762                 return 1
 763         fi
 764         return 0
 765 }
 766
 767 # Similar to test_must_fail and test_might_fail, but check that a
 768 # given command exited with a given exit code. Meant to be used as:
 769 #
 770 #       test_expect_success 'Merge with d/f conflicts' '
 771 #               test_expect_code 1 git merge "merge msg" B master
 772 #       '
 773
 774 test_expect_code () {
 775         want_code=$1
 776         shift
 777         "$@"
 778         exit_code=$?
 779         if test $exit_code = $want_code
 780         then
 781                 return 0
 782         fi
 783
 784         echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
 785         return 1
 786 }
 787
 788 # test_cmp is a helper function to compare actual and expected output.
 789 # You can use it like:
 790 #
 791 #       test_expect_success 'foo works' '
 792 #               echo expected >expected &&
 793 #               foo >actual &&
 794 #               test_cmp expected actual
 795 #       '
 796 #
 797 # This could be written as either "cmp" or "diff -u", but:
 798 # - cmp's output is not nearly as easy to read as diff -u
 799 # - not all diff versions understand "-u"
 800
 801 test_cmp() {
 802         $GIT_TEST_CMP "$@"
 803 }
 804
 805 # This function can be used to schedule some commands to be run
 806 # unconditionally at the end of the test to restore sanity:
 807 #
 808 #       test_expect_success 'test core.capslock' '
 809 #               git config core.capslock true &&
 810 #               test_when_finished "git config --unset core.capslock" &&
 811 #               hello world
 812 #       '
 813 #
 814 # That would be roughly equivalent to
 815 #
 816 #       test_expect_success 'test core.capslock' '
 817 #               git config core.capslock true &&
 818 #               hello world
 819 #               git config --unset core.capslock
 820 #       '
 821 #
 822 # except that the greeting and config --unset must both succeed for
 823 # the test to pass.
 824 #
 825 # Note that under --immediate mode, no clean-up is done to help diagnose
 826 # what went wrong.
 827
 828 test_when_finished () {
 829         test_cleanup="{ $*
 830                 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 831 }
 832
 833 # Most tests can use the created repository, but some may need to create more.
 834 # Usage: test_create_repo <directory>
 835 test_create_repo () {
 836         test "$#" = 1 ||
 837         error "bug in the test script: not 1 parameter to test-create-repo"
 838         repo="$1"
 839         mkdir -p "$repo"
 840         (
 841                 cd "$repo" || error "Cannot setup test environment"
 842                 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
 843                 error "cannot run git init -- have you built things yet?"
 844                 mv .git/hooks .git/hooks-disabled
 845         ) || exit
 846 }
 847
 848 test_done () {
 849         GIT_EXIT_OK=t
 850
 851         if test -z "$HARNESS_ACTIVE"; then
 852                 test_results_dir="$TEST_DIRECTORY/test-results"
 853                 mkdir -p "$test_results_dir"
 854                 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 855
 856                 cat >>"$test_results_path" <<-EOF
 857                 total $test_count
 858                 success $test_success
 859                 fixed $test_fixed
 860                 broken $test_broken
 861                 failed $test_failure
 862
 863                 EOF
 864         fi
 865
 866         if test "$test_fixed" != 0
 867         then
 868                 say_color pass "# fixed $test_fixed known breakage(s)"
 869         fi
 870         if test "$test_broken" != 0
 871         then
 872                 say_color error "# still have $test_broken known breakage(s)"
 873                 msg="remaining $(($test_count-$test_broken)) test(s)"
 874         else
 875                 msg="$test_count test(s)"
 876         fi
 877         case "$test_failure" in
 878         0)
 879                 # Maybe print SKIP message
 880                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 881
 882                 if test $test_external_has_tap -eq 0; then
 883                         say_color pass "# passed all $msg"
 884                         say "1..$test_count$skip_all"
 885                 fi
 886
 887                 test -d "$remove_trash" &&
 888                 cd "$(dirname "$remove_trash")" &&
 889                 rm -rf "$(basename "$remove_trash")"
 890
 891                 exit 0 ;;
 892
 893         *)
 894                 if test $test_external_has_tap -eq 0; then
 895                         say_color error "# failed $test_failure among $msg"
 896                         say "1..$test_count"
 897                 fi
 898
 899                 exit 1 ;;
 900
 901         esac
 902 }
 903
 904 # Test the binaries we have just built.  The tests are kept in
 905 # t/ subdirectory and are run in 'trash directory' subdirectory.
 906 if test -z "$TEST_DIRECTORY"
 907 then
 908         # We allow tests to override this, in case they want to run tests
 909         # outside of t/, e.g. for running tests on the test library
 910         # itself.
 911         TEST_DIRECTORY=$(pwd)
 912 fi
 913 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
 914
 915 if test -n "$valgrind"
 916 then
 917         make_symlink () {
 918                 test -h "$2" &&
 919                 test "$1" = "$(readlink "$2")" || {
 920                         # be super paranoid
 921                         if mkdir "$2".lock
 922                         then
 923                                 rm -f "$2" &&
 924                                 ln -s "$1" "$2" &&
 925                                 rm -r "$2".lock
 926                         else
 927                                 while test -d "$2".lock
 928                                 do
 929                                         say "Waiting for lock on $2."
 930                                         sleep 1
 931                                 done
 932                         fi
 933                 }
 934         }
 935
 936         make_valgrind_symlink () {
 937                 # handle only executables, unless they are shell libraries that
 938                 # need to be in the exec-path.  We will just use "#!" as a
 939                 # guess for a shell-script, since we have no idea what the user
 940                 # may have configured as the shell path.
 941                 test -x "$1" ||
 942                 test "#!" = "$(head -c 2 <"$1")" ||
 943                 return;
 944
 945                 base=$(basename "$1")
 946                 symlink_target=$GIT_BUILD_DIR/$base
 947                 # do not override scripts
 948                 if test -x "$symlink_target" &&
 949                     test ! -d "$symlink_target" &&
 950                     test "#!" != "$(head -c 2 < "$symlink_target")"
 951                 then
 952                         symlink_target=../valgrind.sh
 953                 fi
 954                 case "$base" in
 955                 *.sh|*.perl)
 956                         symlink_target=../unprocessed-script
 957                 esac
 958                 # create the link, or replace it if it is out of date
 959                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 960         }
 961
 962         # override all git executables in TEST_DIRECTORY/..
 963         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 964         mkdir -p "$GIT_VALGRIND"/bin
 965         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 966         do
 967                 make_valgrind_symlink $file
 968         done
 969         # special-case the mergetools loadables
 970         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 971         OLDIFS=$IFS
 972         IFS=:
 973         for path in $PATH
 974         do
 975                 ls "$path"/git-* 2> /dev/null |
 976                 while read file
 977                 do
 978                         make_valgrind_symlink "$file"
 979                 done
 980         done
 981         IFS=$OLDIFS
 982         PATH=$GIT_VALGRIND/bin:$PATH
 983         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 984         export GIT_VALGRIND
 985 elif test -n "$GIT_TEST_INSTALLED" ; then
 986         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 987         error "Cannot run git from $GIT_TEST_INSTALLED."
 988         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 989         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 990 else # normal case, use ../bin-wrappers only unless $with_dashes:
 991         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 992         if ! test -x "$git_bin_dir/git" ; then
 993                 if test -z "$with_dashes" ; then
 994                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 995                 fi
 996                 with_dashes=t
 997         fi
 998         PATH="$git_bin_dir:$PATH"
 999         GIT_EXEC_PATH=$GIT_BUILD_DIR
1000         if test -n "$with_dashes" ; then
1001                 PATH="$GIT_BUILD_DIR:$PATH"
1002         fi
1003 fi
1004 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
1005 unset GIT_CONFIG
1006 GIT_CONFIG_NOSYSTEM=1
1007 GIT_ATTR_NOSYSTEM=1
1008 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
1009
1010 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
1011
1012 if test -z "$GIT_TEST_CMP"
1013 then
1014         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
1015         then
1016                 GIT_TEST_CMP="$DIFF -c"
1017         else
1018                 GIT_TEST_CMP="$DIFF -u"
1019         fi
1020 fi
1021
1022 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
1023 export GITPERLLIB
1024 test -d "$GIT_BUILD_DIR"/templates/blt || {
1025         error "You haven't built things yet, have you?"
1026 }
1027
1028 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
1029 then
1030         GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
1031         export GITPYTHONLIB
1032         test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
1033                 error "You haven't built git_remote_helpers yet, have you?"
1034         }
1035 fi
1036
1037 if ! test -x "$GIT_BUILD_DIR"/test-chmtime; then
1038         echo >&2 'You need to build test-chmtime:'
1039         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
1040         exit 1
1041 fi
1042
1043 # Test repository
1044 test="trash directory.$(basename "$0" .sh)"
1045 test -n "$root" && test="$root/$test"
1046 case "$test" in
1047 /*) TRASH_DIRECTORY="$test" ;;
1048  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
1049 esac
1050 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
1051 rm -fr "$test" || {
1052         GIT_EXIT_OK=t
1053         echo >&5 "FATAL: Cannot prepare test area"
1054         exit 1
1055 }
1056
1057 HOME="$TRASH_DIRECTORY"
1058 export HOME
1059
1060 test_create_repo "$test"
1061 # Use -P to resolve symlinks in our working directory so that the cwd
1062 # in subprocesses like git equals our $PWD (for pathname comparisons).
1063 cd -P "$test" || exit 1
1064
1065 this_test=${0##*/}
1066 this_test=${this_test%%-*}
1067 for skp in $GIT_SKIP_TESTS
1068 do
1069         case "$this_test" in
1070         $skp)
1071                 say_color skip >&3 "skipping test $this_test altogether"
1072                 skip_all="skip all tests in $this_test"
1073                 test_done
1074         esac
1075 done
1076
1077 # Provide an implementation of the 'yes' utility
1078 yes () {
1079         if test $# = 0
1080         then
1081                 y=y
1082         else
1083                 y="$*"
1084         fi
1085
1086         while echo "$y"
1087         do
1088                 :
1089         done
1090 }
1091
1092 # Fix some commands on Windows
1093 case $(uname -s) in
1094 *MINGW*)
1095         # Windows has its own (incompatible) sort and find
1096         sort () {
1097                 /usr/bin/sort "$@"
1098         }
1099         find () {
1100                 /usr/bin/find "$@"
1101         }
1102         sum () {
1103                 md5sum "$@"
1104         }
1105         # git sees Windows-style pwd
1106         pwd () {
1107                 builtin pwd -W
1108         }
1109         # no POSIX permissions
1110         # backslashes in pathspec are converted to '/'
1111         # exec does not inherit the PID
1112         test_set_prereq MINGW
1113         test_set_prereq SED_STRIPS_CR
1114         ;;
1115 *CYGWIN*)
1116         test_set_prereq POSIXPERM
1117         test_set_prereq EXECKEEPSPID
1118         test_set_prereq NOT_MINGW
1119         test_set_prereq SED_STRIPS_CR
1120         ;;
1121 *)
1122         test_set_prereq POSIXPERM
1123         test_set_prereq BSLASHPSPEC
1124         test_set_prereq EXECKEEPSPID
1125         test_set_prereq NOT_MINGW
1126         ;;
1127 esac
1128
1129 test -z "$NO_PERL" && test_set_prereq PERL
1130 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1131 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
1132 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1133
1134 # Can we rely on git's output in the C locale?
1135 if test -n "$GETTEXT_POISON"
1136 then
1137         GIT_GETTEXT_POISON=YesPlease
1138         export GIT_GETTEXT_POISON
1139         test_set_prereq GETTEXT_POISON
1140 else
1141         test_set_prereq C_LOCALE_OUTPUT
1142 fi
1143
1144 # Use this instead of test_cmp to compare files that contain expected and
1145 # actual output from git commands that can be translated.  When running
1146 # under GETTEXT_POISON this pretends that the command produced expected
1147 # results.
1148 test_i18ncmp () {
1149         test -n "$GETTEXT_POISON" || test_cmp "$@"
1150 }
1151
1152 # Use this instead of "grep expected-string actual" to see if the
1153 # output from a git command that can be translated either contains an
1154 # expected string, or does not contain an unwanted one.  When running
1155 # under GETTEXT_POISON this pretends that the command produced expected
1156 # results.
1157 test_i18ngrep () {
1158         if test -n "$GETTEXT_POISON"
1159         then
1160             : # pretend success
1161         elif test "x!" = "x$1"
1162         then
1163                 shift
1164                 ! grep "$@"
1165         else
1166                 grep "$@"
1167         fi
1168 }
1169
1170 # test whether the filesystem supports symbolic links
1171 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
1172 rm -f y
1173
1174 # When the tests are run as root, permission tests will report that
1175 # things are writable when they shouldn't be.
1176 test -w / || test_set_prereq SANITY