t/test-lib.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Junio C Hamano
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see http://www.gnu.org/licenses/ .
  17
  18 # if --tee was passed, write the output not only to the terminal, but
  19 # additionally to the file test-results/$BASENAME.out, too.
  20 case "$GIT_TEST_TEE_STARTED, $* " in
  21 done,*)
  22         # do not redirect again
  23         ;;
  24 *' --tee '*|*' --va'*)
  25         mkdir -p test-results
  26         BASE=test-results/$(basename "$0" .sh)
  27         (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
  28          echo $? > $BASE.exit) | tee $BASE.out
  29         test "$(cat $BASE.exit)" = 0
  30         exit
  31         ;;
  32 esac
  33
  34 # Keep the original TERM for say_color
  35 ORIGINAL_TERM=$TERM
  36
  37 # For repeatability, reset the environment to known value.
  38 LANG=C
  39 LC_ALL=C
  40 PAGER=cat
  41 TZ=UTC
  42 TERM=dumb
  43 export LANG LC_ALL PAGER TERM TZ
  44 EDITOR=:
  45 unset VISUAL
  46 unset EMAIL
  47 unset LANGUAGE
  48 unset $(perl -e '
  49         my @env = keys %ENV;
  50         my $ok = join("|", qw(
  51                 TRACE
  52                 DEBUG
  53                 USE_LOOKUP
  54                 TEST
  55                 .*_TEST
  56                 PROVE
  57                 VALGRIND
  58         ));
  59         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  60         print join("\n", @vars);
  61 ')
  62 GIT_AUTHOR_EMAIL=author@example.com
  63 GIT_AUTHOR_NAME='A U Thor'
  64 GIT_COMMITTER_EMAIL=committer@example.com
  65 GIT_COMMITTER_NAME='C O Mitter'
  66 GIT_MERGE_VERBOSITY=5
  67 GIT_MERGE_AUTOEDIT=no
  68 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
  69 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
  70 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
  71 export EDITOR
  72
  73 # Protect ourselves from common misconfiguration to export
  74 # CDPATH into the environment
  75 unset CDPATH
  76
  77 unset GREP_OPTIONS
  78
  79 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
  80         1|2|true)
  81                 echo "* warning: Some tests will not work if GIT_TRACE" \
  82                         "is set as to trace on STDERR ! *"
  83                 echo "* warning: Please set GIT_TRACE to something" \
  84                         "other than 1, 2 or true ! *"
  85                 ;;
  86 esac
  87
  88 # Convenience
  89 #
  90 # A regexp to match 5 and 40 hexdigits
  91 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  92 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
  93
  94 # Zero SHA-1
  95 _z40=0000000000000000000000000000000000000000
  96
  97 # Line feed
  98 LF='
  99 '
 100
 101 # Each test should start with something like this, after copyright notices:
 102 #
 103 # test_description='Description of this test...
 104 # This test checks if command xyzzy does the right thing...
 105 # '
 106 # . ./test-lib.sh
 107 [ "x$ORIGINAL_TERM" != "xdumb" ] && (
 108                 TERM=$ORIGINAL_TERM &&
 109                 export TERM &&
 110                 [ -t 1 ] &&
 111                 tput bold >/dev/null 2>&1 &&
 112                 tput setaf 1 >/dev/null 2>&1 &&
 113                 tput sgr0 >/dev/null 2>&1
 114         ) &&
 115         color=t
 116
 117 while test "$#" -ne 0
 118 do
 119         case "$1" in
 120         -d|--d|--de|--deb|--debu|--debug)
 121                 debug=t; shift ;;
 122         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 123                 immediate=t; shift ;;
 124         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 125                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 126         -h|--h|--he|--hel|--help)
 127                 help=t; shift ;;
 128         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 129                 verbose=t; shift ;;
 130         -q|--q|--qu|--qui|--quie|--quiet)
 131                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 132                 # passed without the ok/not ok details is always an error.
 133                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 134         --with-dashes)
 135                 with_dashes=t; shift ;;
 136         --no-color)
 137                 color=; shift ;;
 138         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 139                 valgrind=t; verbose=t; shift ;;
 140         --tee)
 141                 shift ;; # was handled already
 142         --root=*)
 143                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 144                 shift ;;
 145         *)
 146                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 147         esac
 148 done
 149
 150 if test -n "$color"; then
 151         say_color () {
 152                 (
 153                 TERM=$ORIGINAL_TERM
 154                 export TERM
 155                 case "$1" in
 156                         error) tput bold; tput setaf 1;; # bold red
 157                         skip)  tput bold; tput setaf 2;; # bold green
 158                         pass)  tput setaf 2;;            # green
 159                         info)  tput setaf 3;;            # brown
 160                         *) test -n "$quiet" && return;;
 161                 esac
 162                 shift
 163                 printf "%s" "$*"
 164                 tput sgr0
 165                 echo
 166                 )
 167         }
 168 else
 169         say_color() {
 170                 test -z "$1" && test -n "$quiet" && return
 171                 shift
 172                 echo "$*"
 173         }
 174 fi
 175
 176 error () {
 177         say_color error "error: $*"
 178         GIT_EXIT_OK=t
 179         exit 1
 180 }
 181
 182 say () {
 183         say_color info "$*"
 184 }
 185
 186 test "${test_description}" != "" ||
 187 error "Test script did not set test_description."
 188
 189 if test "$help" = "t"
 190 then
 191         echo "$test_description"
 192         exit 0
 193 fi
 194
 195 exec 5>&1
 196 exec 6<&0
 197 if test "$verbose" = "t"
 198 then
 199         exec 4>&2 3>&1
 200 else
 201         exec 4>/dev/null 3>/dev/null
 202 fi
 203
 204 test_failure=0
 205 test_count=0
 206 test_fixed=0
 207 test_broken=0
 208 test_success=0
 209
 210 test_external_has_tap=0
 211
 212 die () {
 213         code=$?
 214         if test -n "$GIT_EXIT_OK"
 215         then
 216                 exit $code
 217         else
 218                 echo >&5 "FATAL: Unexpected exit with code $code"
 219                 exit 1
 220         fi
 221 }
 222
 223 GIT_EXIT_OK=
 224 trap 'die' EXIT
 225
 226 # The semantics of the editor variables are that of invoking
 227 # sh -c "$EDITOR \"$@\"" files ...
 228 #
 229 # If our trash directory contains shell metacharacters, they will be
 230 # interpreted if we just set $EDITOR directly, so do a little dance with
 231 # environment variables to work around this.
 232 #
 233 # In particular, quoting isn't enough, as the path may contain the same quote
 234 # that we're using.
 235 test_set_editor () {
 236         FAKE_EDITOR="$1"
 237         export FAKE_EDITOR
 238         EDITOR='"$FAKE_EDITOR"'
 239         export EDITOR
 240 }
 241
 242 test_decode_color () {
 243         awk '
 244                 function name(n) {
 245                         if (n == 0) return "RESET";
 246                         if (n == 1) return "BOLD";
 247                         if (n == 30) return "BLACK";
 248                         if (n == 31) return "RED";
 249                         if (n == 32) return "GREEN";
 250                         if (n == 33) return "YELLOW";
 251                         if (n == 34) return "BLUE";
 252                         if (n == 35) return "MAGENTA";
 253                         if (n == 36) return "CYAN";
 254                         if (n == 37) return "WHITE";
 255                         if (n == 40) return "BLACK";
 256                         if (n == 41) return "BRED";
 257                         if (n == 42) return "BGREEN";
 258                         if (n == 43) return "BYELLOW";
 259                         if (n == 44) return "BBLUE";
 260                         if (n == 45) return "BMAGENTA";
 261                         if (n == 46) return "BCYAN";
 262                         if (n == 47) return "BWHITE";
 263                 }
 264                 {
 265                         while (match($0, /\033\[[0-9;]*m/) != 0) {
 266                                 printf "%s<", substr($0, 1, RSTART-1);
 267                                 codes = substr($0, RSTART+2, RLENGTH-3);
 268                                 if (length(codes) == 0)
 269                                         printf "%s", name(0)
 270                                 else {
 271                                         n = split(codes, ary, ";");
 272                                         sep = "";
 273                                         for (i = 1; i <= n; i++) {
 274                                                 printf "%s%s", sep, name(ary[i]);
 275                                                 sep = ";"
 276                                         }
 277                                 }
 278                                 printf ">";
 279                                 $0 = substr($0, RSTART + RLENGTH, length($0) - RSTART - RLENGTH + 1);
 280                         }
 281                         print
 282                 }
 283         '
 284 }
 285
 286 nul_to_q () {
 287         perl -pe 'y/\000/Q/'
 288 }
 289
 290 q_to_nul () {
 291         perl -pe 'y/Q/\000/'
 292 }
 293
 294 q_to_cr () {
 295         tr Q '\015'
 296 }
 297
 298 q_to_tab () {
 299         tr Q '\011'
 300 }
 301
 302 append_cr () {
 303         sed -e 's/$/Q/' | tr Q '\015'
 304 }
 305
 306 remove_cr () {
 307         tr '\015' Q | sed -e 's/Q$//'
 308 }
 309
 310 # In some bourne shell implementations, the "unset" builtin returns
 311 # nonzero status when a variable to be unset was not set in the first
 312 # place.
 313 #
 314 # Use sane_unset when that should not be considered an error.
 315
 316 sane_unset () {
 317         unset "$@"
 318         return 0
 319 }
 320
 321 test_tick () {
 322         if test -z "${test_tick+set}"
 323         then
 324                 test_tick=1112911993
 325         else
 326                 test_tick=$(($test_tick + 60))
 327         fi
 328         GIT_COMMITTER_DATE="$test_tick -0700"
 329         GIT_AUTHOR_DATE="$test_tick -0700"
 330         export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 331 }
 332
 333 # Stop execution and start a shell. This is useful for debugging tests and
 334 # only makes sense together with "-v".
 335 #
 336 # Be sure to remove all invocations of this command before submitting.
 337
 338 test_pause () {
 339         if test "$verbose" = t; then
 340                 "$SHELL_PATH" <&6 >&3 2>&4
 341         else
 342                 error >&5 "test_pause requires --verbose"
 343         fi
 344 }
 345
 346 # Call test_commit with the arguments "<message> [<file> [<contents>]]"
 347 #
 348 # This will commit a file with the given contents and the given commit
 349 # message.  It will also add a tag with <message> as name.
 350 #
 351 # Both <file> and <contents> default to <message>.
 352
 353 test_commit () {
 354         file=${2:-"$1.t"}
 355         echo "${3-$1}" > "$file" &&
 356         git add "$file" &&
 357         test_tick &&
 358         git commit -m "$1" &&
 359         git tag "$1"
 360 }
 361
 362 # Call test_merge with the arguments "<message> <commit>", where <commit>
 363 # can be a tag pointing to the commit-to-merge.
 364
 365 test_merge () {
 366         test_tick &&
 367         git merge -m "$1" "$2" &&
 368         git tag "$1"
 369 }
 370
 371 # This function helps systems where core.filemode=false is set.
 372 # Use it instead of plain 'chmod +x' to set or unset the executable bit
 373 # of a file in the working directory and add it to the index.
 374
 375 test_chmod () {
 376         chmod "$@" &&
 377         git update-index --add "--chmod=$@"
 378 }
 379
 380 # Unset a configuration variable, but don't fail if it doesn't exist.
 381 test_unconfig () {
 382         git config --unset-all "$@"
 383         config_status=$?
 384         case "$config_status" in
 385         5) # ok, nothing to unset
 386                 config_status=0
 387                 ;;
 388         esac
 389         return $config_status
 390 }
 391
 392 # Set git config, automatically unsetting it after the test is over.
 393 test_config () {
 394         test_when_finished "test_unconfig '$1'" &&
 395         git config "$@"
 396 }
 397
 398
 399 test_config_global () {
 400         test_when_finished "test_unconfig --global '$1'" &&
 401         git config --global "$@"
 402 }
 403
 404 write_script () {
 405         {
 406                 echo "#!${2-"$SHELL_PATH"}" &&
 407                 cat
 408         } >"$1" &&
 409         chmod +x "$1"
 410 }
 411
 412 # Use test_set_prereq to tell that a particular prerequisite is available.
 413 # The prerequisite can later be checked for in two ways:
 414 #
 415 # - Explicitly using test_have_prereq.
 416 #
 417 # - Implicitly by specifying the prerequisite tag in the calls to
 418 #   test_expect_{success,failure,code}.
 419 #
 420 # The single parameter is the prerequisite tag (a simple word, in all
 421 # capital letters by convention).
 422
 423 test_set_prereq () {
 424         satisfied="$satisfied$1 "
 425 }
 426 satisfied=" "
 427
 428 test_have_prereq () {
 429         # prerequisites can be concatenated with ','
 430         save_IFS=$IFS
 431         IFS=,
 432         set -- $*
 433         IFS=$save_IFS
 434
 435         total_prereq=0
 436         ok_prereq=0
 437         missing_prereq=
 438
 439         for prerequisite
 440         do
 441                 total_prereq=$(($total_prereq + 1))
 442                 case $satisfied in
 443                 *" $prerequisite "*)
 444                         ok_prereq=$(($ok_prereq + 1))
 445                         ;;
 446                 *)
 447                         # Keep a list of missing prerequisites
 448                         if test -z "$missing_prereq"
 449                         then
 450                                 missing_prereq=$prerequisite
 451                         else
 452                                 missing_prereq="$prerequisite,$missing_prereq"
 453                         fi
 454                 esac
 455         done
 456
 457         test $total_prereq = $ok_prereq
 458 }
 459
 460 test_declared_prereq () {
 461         case ",$test_prereq," in
 462         *,$1,*)
 463                 return 0
 464                 ;;
 465         esac
 466         return 1
 467 }
 468
 469 # You are not expected to call test_ok_ and test_failure_ directly, use
 470 # the text_expect_* functions instead.
 471
 472 test_ok_ () {
 473         test_success=$(($test_success + 1))
 474         say_color "" "ok $test_count - $@"
 475 }
 476
 477 test_failure_ () {
 478         test_failure=$(($test_failure + 1))
 479         say_color error "not ok - $test_count $1"
 480         shift
 481         echo "$@" | sed -e 's/^/#       /'
 482         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 483 }
 484
 485 test_known_broken_ok_ () {
 486         test_fixed=$(($test_fixed+1))
 487         say_color "" "ok $test_count - $@ # TODO known breakage"
 488 }
 489
 490 test_known_broken_failure_ () {
 491         test_broken=$(($test_broken+1))
 492         say_color skip "not ok $test_count - $@ # TODO known breakage"
 493 }
 494
 495 test_debug () {
 496         test "$debug" = "" || eval "$1"
 497 }
 498
 499 test_eval_ () {
 500         # This is a separate function because some tests use
 501         # "return" to end a test_expect_success block early.
 502         eval </dev/null >&3 2>&4 "$*"
 503 }
 504
 505 test_run_ () {
 506         test_cleanup=:
 507         expecting_failure=$2
 508         test_eval_ "$1"
 509         eval_ret=$?
 510
 511         if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 512         then
 513                 test_eval_ "$test_cleanup"
 514         fi
 515         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
 516                 echo ""
 517         fi
 518         return "$eval_ret"
 519 }
 520
 521 test_skip () {
 522         test_count=$(($test_count+1))
 523         to_skip=
 524         for skp in $GIT_SKIP_TESTS
 525         do
 526                 case $this_test.$test_count in
 527                 $skp)
 528                         to_skip=t
 529                         break
 530                 esac
 531         done
 532         if test -z "$to_skip" && test -n "$test_prereq" &&
 533            ! test_have_prereq "$test_prereq"
 534         then
 535                 to_skip=t
 536         fi
 537         case "$to_skip" in
 538         t)
 539                 of_prereq=
 540                 if test "$missing_prereq" != "$test_prereq"
 541                 then
 542                         of_prereq=" of $test_prereq"
 543                 fi
 544
 545                 say_color skip >&3 "skipping test: $@"
 546                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 547                 : true
 548                 ;;
 549         *)
 550                 false
 551                 ;;
 552         esac
 553 }
 554
 555 test_expect_failure () {
 556         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 557         test "$#" = 2 ||
 558         error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
 559         export test_prereq
 560         if ! test_skip "$@"
 561         then
 562                 say >&3 "checking known breakage: $2"
 563                 if test_run_ "$2" expecting_failure
 564                 then
 565                         test_known_broken_ok_ "$1"
 566                 else
 567                         test_known_broken_failure_ "$1"
 568                 fi
 569         fi
 570         echo >&3 ""
 571 }
 572
 573 test_expect_success () {
 574         test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
 575         test "$#" = 2 ||
 576         error "bug in the test script: not 2 or 3 parameters to test-expect-success"
 577         export test_prereq
 578         if ! test_skip "$@"
 579         then
 580                 say >&3 "expecting success: $2"
 581                 if test_run_ "$2"
 582                 then
 583                         test_ok_ "$1"
 584                 else
 585                         test_failure_ "$@"
 586                 fi
 587         fi
 588         echo >&3 ""
 589 }
 590
 591 # test_external runs external test scripts that provide continuous
 592 # test output about their progress, and succeeds/fails on
 593 # zero/non-zero exit code.  It outputs the test output on stdout even
 594 # in non-verbose mode, and announces the external script with "# run
 595 # <n>: ..." before running it.  When providing relative paths, keep in
 596 # mind that all scripts run in "trash directory".
 597 # Usage: test_external description command arguments...
 598 # Example: test_external 'Perl API' perl ../path/to/test.pl
 599 test_external () {
 600         test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq=
 601         test "$#" = 3 ||
 602         error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
 603         descr="$1"
 604         shift
 605         export test_prereq
 606         if ! test_skip "$descr" "$@"
 607         then
 608                 # Announce the script to reduce confusion about the
 609                 # test output that follows.
 610                 say_color "" "# run $test_count: $descr ($*)"
 611                 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG
 612                 # to be able to use them in script
 613                 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG
 614                 # Run command; redirect its stderr to &4 as in
 615                 # test_run_, but keep its stdout on our stdout even in
 616                 # non-verbose mode.
 617                 "$@" 2>&4
 618                 if [ "$?" = 0 ]
 619                 then
 620                         if test $test_external_has_tap -eq 0; then
 621                                 test_ok_ "$descr"
 622                         else
 623                                 say_color "" "# test_external test $descr was ok"
 624                                 test_success=$(($test_success + 1))
 625                         fi
 626                 else
 627                         if test $test_external_has_tap -eq 0; then
 628                                 test_failure_ "$descr" "$@"
 629                         else
 630                                 say_color error "# test_external test $descr failed: $@"
 631                                 test_failure=$(($test_failure + 1))
 632                         fi
 633                 fi
 634         fi
 635 }
 636
 637 # Like test_external, but in addition tests that the command generated
 638 # no output on stderr.
 639 test_external_without_stderr () {
 640         # The temporary file has no (and must have no) security
 641         # implications.
 642         tmp=${TMPDIR:-/tmp}
 643         stderr="$tmp/git-external-stderr.$$.tmp"
 644         test_external "$@" 4> "$stderr"
 645         [ -f "$stderr" ] || error "Internal error: $stderr disappeared."
 646         descr="no stderr: $1"
 647         shift
 648         say >&3 "# expecting no stderr from previous command"
 649         if [ ! -s "$stderr" ]; then
 650                 rm "$stderr"
 651
 652                 if test $test_external_has_tap -eq 0; then
 653                         test_ok_ "$descr"
 654                 else
 655                         say_color "" "# test_external_without_stderr test $descr was ok"
 656                         test_success=$(($test_success + 1))
 657                 fi
 658         else
 659                 if [ "$verbose" = t ]; then
 660                         output=`echo; echo "# Stderr is:"; cat "$stderr"`
 661                 else
 662                         output=
 663                 fi
 664                 # rm first in case test_failure exits.
 665                 rm "$stderr"
 666                 if test $test_external_has_tap -eq 0; then
 667                         test_failure_ "$descr" "$@" "$output"
 668                 else
 669                         say_color error "# test_external_without_stderr test $descr failed: $@: $output"
 670                         test_failure=$(($test_failure + 1))
 671                 fi
 672         fi
 673 }
 674
 675 # debugging-friendly alternatives to "test [-f|-d|-e]"
 676 # The commands test the existence or non-existence of $1. $2 can be
 677 # given to provide a more precise diagnosis.
 678 test_path_is_file () {
 679         if ! [ -f "$1" ]
 680         then
 681                 echo "File $1 doesn't exist. $*"
 682                 false
 683         fi
 684 }
 685
 686 test_path_is_dir () {
 687         if ! [ -d "$1" ]
 688         then
 689                 echo "Directory $1 doesn't exist. $*"
 690                 false
 691         fi
 692 }
 693
 694 test_path_is_missing () {
 695         if [ -e "$1" ]
 696         then
 697                 echo "Path exists:"
 698                 ls -ld "$1"
 699                 if [ $# -ge 1 ]; then
 700                         echo "$*"
 701                 fi
 702                 false
 703         fi
 704 }
 705
 706 # test_line_count checks that a file has the number of lines it
 707 # ought to. For example:
 708 #
 709 #       test_expect_success 'produce exactly one line of output' '
 710 #               do something >output &&
 711 #               test_line_count = 1 output
 712 #       '
 713 #
 714 # is like "test $(wc -l <output) = 1" except that it passes the
 715 # output through when the number of lines is wrong.
 716
 717 test_line_count () {
 718         if test $# != 3
 719         then
 720                 error "bug in the test script: not 3 parameters to test_line_count"
 721         elif ! test $(wc -l <"$3") "$1" "$2"
 722         then
 723                 echo "test_line_count: line count for $3 !$1 $2"
 724                 cat "$3"
 725                 return 1
 726         fi
 727 }
 728
 729 # This is not among top-level (test_expect_success | test_expect_failure)
 730 # but is a prefix that can be used in the test script, like:
 731 #
 732 #       test_expect_success 'complain and die' '
 733 #           do something &&
 734 #           do something else &&
 735 #           test_must_fail git checkout ../outerspace
 736 #       '
 737 #
 738 # Writing this as "! git checkout ../outerspace" is wrong, because
 739 # the failure could be due to a segv.  We want a controlled failure.
 740
 741 test_must_fail () {
 742         "$@"
 743         exit_code=$?
 744         if test $exit_code = 0; then
 745                 echo >&2 "test_must_fail: command succeeded: $*"
 746                 return 1
 747         elif test $exit_code -gt 129 -a $exit_code -le 192; then
 748                 echo >&2 "test_must_fail: died by signal: $*"
 749                 return 1
 750         elif test $exit_code = 127; then
 751                 echo >&2 "test_must_fail: command not found: $*"
 752                 return 1
 753         fi
 754         return 0
 755 }
 756
 757 # Similar to test_must_fail, but tolerates success, too.  This is
 758 # meant to be used in contexts like:
 759 #
 760 #       test_expect_success 'some command works without configuration' '
 761 #               test_might_fail git config --unset all.configuration &&
 762 #               do something
 763 #       '
 764 #
 765 # Writing "git config --unset all.configuration || :" would be wrong,
 766 # because we want to notice if it fails due to segv.
 767
 768 test_might_fail () {
 769         "$@"
 770         exit_code=$?
 771         if test $exit_code -gt 129 -a $exit_code -le 192; then
 772                 echo >&2 "test_might_fail: died by signal: $*"
 773                 return 1
 774         elif test $exit_code = 127; then
 775                 echo >&2 "test_might_fail: command not found: $*"
 776                 return 1
 777         fi
 778         return 0
 779 }
 780
 781 # Similar to test_must_fail and test_might_fail, but check that a
 782 # given command exited with a given exit code. Meant to be used as:
 783 #
 784 #       test_expect_success 'Merge with d/f conflicts' '
 785 #               test_expect_code 1 git merge "merge msg" B master
 786 #       '
 787
 788 test_expect_code () {
 789         want_code=$1
 790         shift
 791         "$@"
 792         exit_code=$?
 793         if test $exit_code = $want_code
 794         then
 795                 return 0
 796         fi
 797
 798         echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
 799         return 1
 800 }
 801
 802 # test_cmp is a helper function to compare actual and expected output.
 803 # You can use it like:
 804 #
 805 #       test_expect_success 'foo works' '
 806 #               echo expected >expected &&
 807 #               foo >actual &&
 808 #               test_cmp expected actual
 809 #       '
 810 #
 811 # This could be written as either "cmp" or "diff -u", but:
 812 # - cmp's output is not nearly as easy to read as diff -u
 813 # - not all diff versions understand "-u"
 814
 815 test_cmp() {
 816         $GIT_TEST_CMP "$@"
 817 }
 818
 819 # This function can be used to schedule some commands to be run
 820 # unconditionally at the end of the test to restore sanity:
 821 #
 822 #       test_expect_success 'test core.capslock' '
 823 #               git config core.capslock true &&
 824 #               test_when_finished "git config --unset core.capslock" &&
 825 #               hello world
 826 #       '
 827 #
 828 # That would be roughly equivalent to
 829 #
 830 #       test_expect_success 'test core.capslock' '
 831 #               git config core.capslock true &&
 832 #               hello world
 833 #               git config --unset core.capslock
 834 #       '
 835 #
 836 # except that the greeting and config --unset must both succeed for
 837 # the test to pass.
 838 #
 839 # Note that under --immediate mode, no clean-up is done to help diagnose
 840 # what went wrong.
 841
 842 test_when_finished () {
 843         test_cleanup="{ $*
 844                 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 845 }
 846
 847 # Most tests can use the created repository, but some may need to create more.
 848 # Usage: test_create_repo <directory>
 849 test_create_repo () {
 850         test "$#" = 1 ||
 851         error "bug in the test script: not 1 parameter to test-create-repo"
 852         repo="$1"
 853         mkdir -p "$repo"
 854         (
 855                 cd "$repo" || error "Cannot setup test environment"
 856                 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
 857                 error "cannot run git init -- have you built things yet?"
 858                 mv .git/hooks .git/hooks-disabled
 859         ) || exit
 860 }
 861
 862 test_done () {
 863         GIT_EXIT_OK=t
 864
 865         if test -z "$HARNESS_ACTIVE"; then
 866                 test_results_dir="$TEST_DIRECTORY/test-results"
 867                 mkdir -p "$test_results_dir"
 868                 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 869
 870                 cat >>"$test_results_path" <<-EOF
 871                 total $test_count
 872                 success $test_success
 873                 fixed $test_fixed
 874                 broken $test_broken
 875                 failed $test_failure
 876
 877                 EOF
 878         fi
 879
 880         if test "$test_fixed" != 0
 881         then
 882                 say_color pass "# fixed $test_fixed known breakage(s)"
 883         fi
 884         if test "$test_broken" != 0
 885         then
 886                 say_color error "# still have $test_broken known breakage(s)"
 887                 msg="remaining $(($test_count-$test_broken)) test(s)"
 888         else
 889                 msg="$test_count test(s)"
 890         fi
 891         case "$test_failure" in
 892         0)
 893                 # Maybe print SKIP message
 894                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 895
 896                 if test $test_external_has_tap -eq 0; then
 897                         say_color pass "# passed all $msg"
 898                         say "1..$test_count$skip_all"
 899                 fi
 900
 901                 test -d "$remove_trash" &&
 902                 cd "$(dirname "$remove_trash")" &&
 903                 rm -rf "$(basename "$remove_trash")"
 904
 905                 exit 0 ;;
 906
 907         *)
 908                 if test $test_external_has_tap -eq 0; then
 909                         say_color error "# failed $test_failure among $msg"
 910                         say "1..$test_count"
 911                 fi
 912
 913                 exit 1 ;;
 914
 915         esac
 916 }
 917
 918 # Test the binaries we have just built.  The tests are kept in
 919 # t/ subdirectory and are run in 'trash directory' subdirectory.
 920 if test -z "$TEST_DIRECTORY"
 921 then
 922         # We allow tests to override this, in case they want to run tests
 923         # outside of t/, e.g. for running tests on the test library
 924         # itself.
 925         TEST_DIRECTORY=$(pwd)
 926 fi
 927 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
 928
 929 if test -n "$valgrind"
 930 then
 931         make_symlink () {
 932                 test -h "$2" &&
 933                 test "$1" = "$(readlink "$2")" || {
 934                         # be super paranoid
 935                         if mkdir "$2".lock
 936                         then
 937                                 rm -f "$2" &&
 938                                 ln -s "$1" "$2" &&
 939                                 rm -r "$2".lock
 940                         else
 941                                 while test -d "$2".lock
 942                                 do
 943                                         say "Waiting for lock on $2."
 944                                         sleep 1
 945                                 done
 946                         fi
 947                 }
 948         }
 949
 950         make_valgrind_symlink () {
 951                 # handle only executables, unless they are shell libraries that
 952                 # need to be in the exec-path.  We will just use "#!" as a
 953                 # guess for a shell-script, since we have no idea what the user
 954                 # may have configured as the shell path.
 955                 test -x "$1" ||
 956                 test "#!" = "$(head -c 2 <"$1")" ||
 957                 return;
 958
 959                 base=$(basename "$1")
 960                 symlink_target=$GIT_BUILD_DIR/$base
 961                 # do not override scripts
 962                 if test -x "$symlink_target" &&
 963                     test ! -d "$symlink_target" &&
 964                     test "#!" != "$(head -c 2 < "$symlink_target")"
 965                 then
 966                         symlink_target=../valgrind.sh
 967                 fi
 968                 case "$base" in
 969                 *.sh|*.perl)
 970                         symlink_target=../unprocessed-script
 971                 esac
 972                 # create the link, or replace it if it is out of date
 973                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 974         }
 975
 976         # override all git executables in TEST_DIRECTORY/..
 977         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 978         mkdir -p "$GIT_VALGRIND"/bin
 979         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 980         do
 981                 make_valgrind_symlink $file
 982         done
 983         # special-case the mergetools loadables
 984         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 985         OLDIFS=$IFS
 986         IFS=:
 987         for path in $PATH
 988         do
 989                 ls "$path"/git-* 2> /dev/null |
 990                 while read file
 991                 do
 992                         make_valgrind_symlink "$file"
 993                 done
 994         done
 995         IFS=$OLDIFS
 996         PATH=$GIT_VALGRIND/bin:$PATH
 997         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 998         export GIT_VALGRIND
 999 elif test -n "$GIT_TEST_INSTALLED" ; then
1000         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
1001         error "Cannot run git from $GIT_TEST_INSTALLED."
1002         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
1003         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
1004 else # normal case, use ../bin-wrappers only unless $with_dashes:
1005         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
1006         if ! test -x "$git_bin_dir/git" ; then
1007                 if test -z "$with_dashes" ; then
1008                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
1009                 fi
1010                 with_dashes=t
1011         fi
1012         PATH="$git_bin_dir:$PATH"
1013         GIT_EXEC_PATH=$GIT_BUILD_DIR
1014         if test -n "$with_dashes" ; then
1015                 PATH="$GIT_BUILD_DIR:$PATH"
1016         fi
1017 fi
1018 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
1019 unset GIT_CONFIG
1020 GIT_CONFIG_NOSYSTEM=1
1021 GIT_ATTR_NOSYSTEM=1
1022 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
1023
1024 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
1025
1026 if test -z "$GIT_TEST_CMP"
1027 then
1028         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
1029         then
1030                 GIT_TEST_CMP="$DIFF -c"
1031         else
1032                 GIT_TEST_CMP="$DIFF -u"
1033         fi
1034 fi
1035
1036 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
1037 export GITPERLLIB
1038 test -d "$GIT_BUILD_DIR"/templates/blt || {
1039         error "You haven't built things yet, have you?"
1040 }
1041
1042 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
1043 then
1044         GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
1045         export GITPYTHONLIB
1046         test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
1047                 error "You haven't built git_remote_helpers yet, have you?"
1048         }
1049 fi
1050
1051 if ! test -x "$GIT_BUILD_DIR"/test-chmtime; then
1052         echo >&2 'You need to build test-chmtime:'
1053         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
1054         exit 1
1055 fi
1056
1057 # Test repository
1058 test="trash directory.$(basename "$0" .sh)"
1059 test -n "$root" && test="$root/$test"
1060 case "$test" in
1061 /*) TRASH_DIRECTORY="$test" ;;
1062  *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;
1063 esac
1064 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
1065 rm -fr "$test" || {
1066         GIT_EXIT_OK=t
1067         echo >&5 "FATAL: Cannot prepare test area"
1068         exit 1
1069 }
1070
1071 HOME="$TRASH_DIRECTORY"
1072 export HOME
1073
1074 test_create_repo "$test"
1075 # Use -P to resolve symlinks in our working directory so that the cwd
1076 # in subprocesses like git equals our $PWD (for pathname comparisons).
1077 cd -P "$test" || exit 1
1078
1079 this_test=${0##*/}
1080 this_test=${this_test%%-*}
1081 for skp in $GIT_SKIP_TESTS
1082 do
1083         case "$this_test" in
1084         $skp)
1085                 say_color skip >&3 "skipping test $this_test altogether"
1086                 skip_all="skip all tests in $this_test"
1087                 test_done
1088         esac
1089 done
1090
1091 # Provide an implementation of the 'yes' utility
1092 yes () {
1093         if test $# = 0
1094         then
1095                 y=y
1096         else
1097                 y="$*"
1098         fi
1099
1100         while echo "$y"
1101         do
1102                 :
1103         done
1104 }
1105
1106 # Fix some commands on Windows
1107 case $(uname -s) in
1108 *MINGW*)
1109         # Windows has its own (incompatible) sort and find
1110         sort () {
1111                 /usr/bin/sort "$@"
1112         }
1113         find () {
1114                 /usr/bin/find "$@"
1115         }
1116         sum () {
1117                 md5sum "$@"
1118         }
1119         # git sees Windows-style pwd
1120         pwd () {
1121                 builtin pwd -W
1122         }
1123         # no POSIX permissions
1124         # backslashes in pathspec are converted to '/'
1125         # exec does not inherit the PID
1126         test_set_prereq MINGW
1127         test_set_prereq SED_STRIPS_CR
1128         ;;
1129 *CYGWIN*)
1130         test_set_prereq POSIXPERM
1131         test_set_prereq EXECKEEPSPID
1132         test_set_prereq NOT_MINGW
1133         test_set_prereq SED_STRIPS_CR
1134         ;;
1135 *)
1136         test_set_prereq POSIXPERM
1137         test_set_prereq BSLASHPSPEC
1138         test_set_prereq EXECKEEPSPID
1139         test_set_prereq NOT_MINGW
1140         ;;
1141 esac
1142
1143 test -z "$NO_PERL" && test_set_prereq PERL
1144 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1145 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
1146 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1147
1148 # Can we rely on git's output in the C locale?
1149 if test -n "$GETTEXT_POISON"
1150 then
1151         GIT_GETTEXT_POISON=YesPlease
1152         export GIT_GETTEXT_POISON
1153         test_set_prereq GETTEXT_POISON
1154 else
1155         test_set_prereq C_LOCALE_OUTPUT
1156 fi
1157
1158 # Use this instead of test_cmp to compare files that contain expected and
1159 # actual output from git commands that can be translated.  When running
1160 # under GETTEXT_POISON this pretends that the command produced expected
1161 # results.
1162 test_i18ncmp () {
1163         test -n "$GETTEXT_POISON" || test_cmp "$@"
1164 }
1165
1166 # Use this instead of "grep expected-string actual" to see if the
1167 # output from a git command that can be translated either contains an
1168 # expected string, or does not contain an unwanted one.  When running
1169 # under GETTEXT_POISON this pretends that the command produced expected
1170 # results.
1171 test_i18ngrep () {
1172         if test -n "$GETTEXT_POISON"
1173         then
1174             : # pretend success
1175         elif test "x!" = "x$1"
1176         then
1177                 shift
1178                 ! grep "$@"
1179         else
1180                 grep "$@"
1181         fi
1182 }
1183
1184 # test whether the filesystem supports symbolic links
1185 ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
1186 rm -f y
1187
1188 # When the tests are run as root, permission tests will report that
1189 # things are writable when they shouldn't be.
1190 test -w / || test_set_prereq SANITY