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 # for git on windows so stdin will not be misdetected as attached to a
  19 # terminal
  20 exec < /dev/null
  21
  22 # Keep the original TERM for say_color
  23 ORIGINAL_TERM=$TERM
  24
  25 # Test the binaries we have just built.  The tests are kept in
  26 # t/ subdirectory and are run in 'trash directory' subdirectory.
  27 if test -z "$TEST_DIRECTORY"
  28 then
  29         # We allow tests to override this, in case they want to run tests
  30         # outside of t/, e.g. for running tests on the test library
  31         # itself.
  32         TEST_DIRECTORY=$(pwd)
  33 fi
  34 if test -z "$TEST_OUTPUT_DIRECTORY"
  35 then
  36         # Similarly, override this to store the test-results subdir
  37         # elsewhere
  38         TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  39 fi
  40 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  41
  42 ################################################################
  43 # It appears that people try to run tests without building...
  44 "$GIT_BUILD_DIR/git" >/dev/null
  45 if test $? != 1
  46 then
  47         echo >&2 'error: you do not seem to have built git yet.'
  48         exit 1
  49 fi
  50
  51 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  52 export PERL_PATH SHELL_PATH
  53
  54 # if --tee was passed, write the output not only to the terminal, but
  55 # additionally to the file test-results/$BASENAME.out, too.
  56 case "$GIT_TEST_TEE_STARTED, $* " in
  57 done,*)
  58         # do not redirect again
  59         ;;
  60 *' --tee '*|*' --va'*)
  61         mkdir -p test-results
  62         BASE=test-results/$(basename "$0" .sh)
  63         (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  64          echo $? > $BASE.exit) | tee $BASE.out
  65         test "$(cat $BASE.exit)" = 0
  66         exit
  67         ;;
  68 esac
  69
  70 # For repeatability, reset the environment to known value.
  71 LANG=C
  72 LC_ALL=C
  73 PAGER=cat
  74 TZ=UTC
  75 TERM=dumb
  76 export LANG LC_ALL PAGER TERM TZ
  77 EDITOR=:
  78 # A call to "unset" with no arguments causes at least Solaris 10
  79 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
  80 # deriving from the command substitution clustered with the other
  81 # ones.
  82 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  83         my @env = keys %ENV;
  84         my $ok = join("|", qw(
  85                 TRACE
  86                 DEBUG
  87                 USE_LOOKUP
  88                 TEST
  89                 .*_TEST
  90                 PROVE
  91                 VALGRIND
  92                 PERF_AGGREGATING_LATER
  93         ));
  94         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  95         print join("\n", @vars);
  96 ')
  97 unset XDG_CONFIG_HOME
  98 GIT_AUTHOR_EMAIL=author@example.com
  99 GIT_AUTHOR_NAME='A U Thor'
 100 GIT_COMMITTER_EMAIL=committer@example.com
 101 GIT_COMMITTER_NAME='C O Mitter'
 102 GIT_MERGE_VERBOSITY=5
 103 GIT_MERGE_AUTOEDIT=no
 104 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 105 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 106 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 107 export EDITOR
 108
 109 # Add libc MALLOC and MALLOC_PERTURB test
 110 # only if we are not executing the test with valgrind
 111 if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 112    test -n "$TEST_NO_MALLOC_CHECK"
 113 then
 114         setup_malloc_check () {
 115                 : nothing
 116         }
 117         teardown_malloc_check () {
 118                 : nothing
 119         }
 120 else
 121         setup_malloc_check () {
 122                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 123                 export MALLOC_CHECK_ MALLOC_PERTURB_
 124         }
 125         teardown_malloc_check () {
 126                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 127         }
 128 fi
 129
 130 # Protect ourselves from common misconfiguration to export
 131 # CDPATH into the environment
 132 unset CDPATH
 133
 134 unset GREP_OPTIONS
 135
 136 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 137 1|2|true)
 138         echo "* warning: Some tests will not work if GIT_TRACE" \
 139                 "is set as to trace on STDERR ! *"
 140         echo "* warning: Please set GIT_TRACE to something" \
 141                 "other than 1, 2 or true ! *"
 142         ;;
 143 esac
 144
 145 # Convenience
 146 #
 147 # A regexp to match 5 and 40 hexdigits
 148 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 149 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 150
 151 # Zero SHA-1
 152 _z40=0000000000000000000000000000000000000000
 153
 154 # Line feed
 155 LF='
 156 '
 157
 158 export _x05 _x40 _z40 LF
 159
 160 # Each test should start with something like this, after copyright notices:
 161 #
 162 # test_description='Description of this test...
 163 # This test checks if command xyzzy does the right thing...
 164 # '
 165 # . ./test-lib.sh
 166 [ "x$ORIGINAL_TERM" != "xdumb" ] && (
 167                 TERM=$ORIGINAL_TERM &&
 168                 export TERM &&
 169                 [ -t 1 ] &&
 170                 tput bold >/dev/null 2>&1 &&
 171                 tput setaf 1 >/dev/null 2>&1 &&
 172                 tput sgr0 >/dev/null 2>&1
 173         ) &&
 174         color=t
 175
 176 while test "$#" -ne 0
 177 do
 178         case "$1" in
 179         -d|--d|--de|--deb|--debu|--debug)
 180                 debug=t; shift ;;
 181         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 182                 immediate=t; shift ;;
 183         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 184                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 185         -h|--h|--he|--hel|--help)
 186                 help=t; shift ;;
 187         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 188                 verbose=t; shift ;;
 189         -q|--q|--qu|--qui|--quie|--quiet)
 190                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 191                 # passed without the ok/not ok details is always an error.
 192                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 193         --with-dashes)
 194                 with_dashes=t; shift ;;
 195         --no-color)
 196                 color=; shift ;;
 197         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 198                 valgrind=t; verbose=t; shift ;;
 199         --tee)
 200                 shift ;; # was handled already
 201         --root=*)
 202                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 203                 shift ;;
 204         *)
 205                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 206         esac
 207 done
 208
 209 if test -n "$color"
 210 then
 211         say_color () {
 212                 (
 213                 TERM=$ORIGINAL_TERM
 214                 export TERM
 215                 case "$1" in
 216                 error)
 217                         tput bold; tput setaf 1;; # bold red
 218                 skip)
 219                         tput bold; tput setaf 2;; # bold green
 220                 pass)
 221                         tput setaf 2;;            # green
 222                 info)
 223                         tput setaf 3;;            # brown
 224                 *)
 225                         test -n "$quiet" && return;;
 226                 esac
 227                 shift
 228                 printf "%s" "$*"
 229                 tput sgr0
 230                 echo
 231                 )
 232         }
 233 else
 234         say_color() {
 235                 test -z "$1" && test -n "$quiet" && return
 236                 shift
 237                 echo "$*"
 238         }
 239 fi
 240
 241 error () {
 242         say_color error "error: $*"
 243         GIT_EXIT_OK=t
 244         exit 1
 245 }
 246
 247 say () {
 248         say_color info "$*"
 249 }
 250
 251 test "${test_description}" != "" ||
 252 error "Test script did not set test_description."
 253
 254 if test "$help" = "t"
 255 then
 256         echo "$test_description"
 257         exit 0
 258 fi
 259
 260 exec 5>&1
 261 exec 6<&0
 262 if test "$verbose" = "t"
 263 then
 264         exec 4>&2 3>&1
 265 else
 266         exec 4>/dev/null 3>/dev/null
 267 fi
 268
 269 test_failure=0
 270 test_count=0
 271 test_fixed=0
 272 test_broken=0
 273 test_success=0
 274
 275 test_external_has_tap=0
 276
 277 die () {
 278         code=$?
 279         if test -n "$GIT_EXIT_OK"
 280         then
 281                 exit $code
 282         else
 283                 echo >&5 "FATAL: Unexpected exit with code $code"
 284                 exit 1
 285         fi
 286 }
 287
 288 GIT_EXIT_OK=
 289 trap 'die' EXIT
 290
 291 # The user-facing functions are loaded from a separate file so that
 292 # test_perf subshells can have them too
 293 . "$TEST_DIRECTORY/test-lib-functions.sh"
 294
 295 # You are not expected to call test_ok_ and test_failure_ directly, use
 296 # the text_expect_* functions instead.
 297
 298 test_ok_ () {
 299         test_success=$(($test_success + 1))
 300         say_color "" "ok $test_count - $@"
 301 }
 302
 303 test_failure_ () {
 304         test_failure=$(($test_failure + 1))
 305         say_color error "not ok - $test_count $1"
 306         shift
 307         echo "$@" | sed -e 's/^/#       /'
 308         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 309 }
 310
 311 test_known_broken_ok_ () {
 312         test_fixed=$(($test_fixed+1))
 313         say_color "" "ok $test_count - $@ # TODO known breakage"
 314 }
 315
 316 test_known_broken_failure_ () {
 317         test_broken=$(($test_broken+1))
 318         say_color skip "not ok $test_count - $@ # TODO known breakage"
 319 }
 320
 321 test_debug () {
 322         test "$debug" = "" || eval "$1"
 323 }
 324
 325 test_eval_ () {
 326         # This is a separate function because some tests use
 327         # "return" to end a test_expect_success block early.
 328         eval </dev/null >&3 2>&4 "$*"
 329 }
 330
 331 test_run_ () {
 332         test_cleanup=:
 333         expecting_failure=$2
 334         test_eval_ "$1"
 335         eval_ret=$?
 336
 337         if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 338         then
 339                 setup_malloc_check
 340                 test_eval_ "$test_cleanup"
 341                 teardown_malloc_check
 342         fi
 343         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 344         then
 345                 echo ""
 346         fi
 347         return "$eval_ret"
 348 }
 349
 350 test_skip () {
 351         test_count=$(($test_count+1))
 352         to_skip=
 353         for skp in $GIT_SKIP_TESTS
 354         do
 355                 case $this_test.$test_count in
 356                 $skp)
 357                         to_skip=t
 358                         break
 359                 esac
 360         done
 361         if test -z "$to_skip" && test -n "$test_prereq" &&
 362            ! test_have_prereq "$test_prereq"
 363         then
 364                 to_skip=t
 365         fi
 366         case "$to_skip" in
 367         t)
 368                 of_prereq=
 369                 if test "$missing_prereq" != "$test_prereq"
 370                 then
 371                         of_prereq=" of $test_prereq"
 372                 fi
 373
 374                 say_color skip >&3 "skipping test: $@"
 375                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 376                 : true
 377                 ;;
 378         *)
 379                 false
 380                 ;;
 381         esac
 382 }
 383
 384 # stub; perf-lib overrides it
 385 test_at_end_hook_ () {
 386         :
 387 }
 388
 389 test_done () {
 390         GIT_EXIT_OK=t
 391
 392         if test -z "$HARNESS_ACTIVE"
 393         then
 394                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 395                 mkdir -p "$test_results_dir"
 396                 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 397
 398                 cat >>"$test_results_path" <<-EOF
 399                 total $test_count
 400                 success $test_success
 401                 fixed $test_fixed
 402                 broken $test_broken
 403                 failed $test_failure
 404
 405                 EOF
 406         fi
 407
 408         if test "$test_fixed" != 0
 409         then
 410                 say_color pass "# fixed $test_fixed known breakage(s)"
 411         fi
 412         if test "$test_broken" != 0
 413         then
 414                 say_color error "# still have $test_broken known breakage(s)"
 415                 msg="remaining $(($test_count-$test_broken)) test(s)"
 416         else
 417                 msg="$test_count test(s)"
 418         fi
 419         case "$test_failure" in
 420         0)
 421                 # Maybe print SKIP message
 422                 if test -n "$skip_all" && test $test_count -gt 0
 423                 then
 424                         error "Can't use skip_all after running some tests"
 425                 fi
 426                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 427
 428                 if test $test_external_has_tap -eq 0
 429                 then
 430                         if test $test_count -gt 0
 431                         then
 432                                 say_color pass "# passed all $msg"
 433                         fi
 434                         say "1..$test_count$skip_all"
 435                 fi
 436
 437                 test -d "$remove_trash" &&
 438                 cd "$(dirname "$remove_trash")" &&
 439                 rm -rf "$(basename "$remove_trash")"
 440
 441                 test_at_end_hook_
 442
 443                 exit 0 ;;
 444
 445         *)
 446                 if test $test_external_has_tap -eq 0
 447                 then
 448                         say_color error "# failed $test_failure among $msg"
 449                         say "1..$test_count"
 450                 fi
 451
 452                 exit 1 ;;
 453
 454         esac
 455 }
 456
 457 if test -n "$valgrind"
 458 then
 459         make_symlink () {
 460                 test -h "$2" &&
 461                 test "$1" = "$(readlink "$2")" || {
 462                         # be super paranoid
 463                         if mkdir "$2".lock
 464                         then
 465                                 rm -f "$2" &&
 466                                 ln -s "$1" "$2" &&
 467                                 rm -r "$2".lock
 468                         else
 469                                 while test -d "$2".lock
 470                                 do
 471                                         say "Waiting for lock on $2."
 472                                         sleep 1
 473                                 done
 474                         fi
 475                 }
 476         }
 477
 478         make_valgrind_symlink () {
 479                 # handle only executables, unless they are shell libraries that
 480                 # need to be in the exec-path.  We will just use "#!" as a
 481                 # guess for a shell-script, since we have no idea what the user
 482                 # may have configured as the shell path.
 483                 test -x "$1" ||
 484                 test "#!" = "$(head -c 2 <"$1")" ||
 485                 return;
 486
 487                 base=$(basename "$1")
 488                 symlink_target=$GIT_BUILD_DIR/$base
 489                 # do not override scripts
 490                 if test -x "$symlink_target" &&
 491                     test ! -d "$symlink_target" &&
 492                     test "#!" != "$(head -c 2 < "$symlink_target")"
 493                 then
 494                         symlink_target=../valgrind.sh
 495                 fi
 496                 case "$base" in
 497                 *.sh|*.perl)
 498                         symlink_target=../unprocessed-script
 499                 esac
 500                 # create the link, or replace it if it is out of date
 501                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 502         }
 503
 504         # override all git executables in TEST_DIRECTORY/..
 505         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 506         mkdir -p "$GIT_VALGRIND"/bin
 507         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 508         do
 509                 make_valgrind_symlink $file
 510         done
 511         # special-case the mergetools loadables
 512         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 513         OLDIFS=$IFS
 514         IFS=:
 515         for path in $PATH
 516         do
 517                 ls "$path"/git-* 2> /dev/null |
 518                 while read file
 519                 do
 520                         make_valgrind_symlink "$file"
 521                 done
 522         done
 523         IFS=$OLDIFS
 524         PATH=$GIT_VALGRIND/bin:$PATH
 525         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 526         export GIT_VALGRIND
 527 elif test -n "$GIT_TEST_INSTALLED"
 528 then
 529         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 530         error "Cannot run git from $GIT_TEST_INSTALLED."
 531         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 532         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 533 else # normal case, use ../bin-wrappers only unless $with_dashes:
 534         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 535         if ! test -x "$git_bin_dir/git"
 536         then
 537                 if test -z "$with_dashes"
 538                 then
 539                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 540                 fi
 541                 with_dashes=t
 542         fi
 543         PATH="$git_bin_dir:$PATH"
 544         GIT_EXEC_PATH=$GIT_BUILD_DIR
 545         if test -n "$with_dashes"
 546         then
 547                 PATH="$GIT_BUILD_DIR:$PATH"
 548         fi
 549 fi
 550 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 551 unset GIT_CONFIG
 552 GIT_CONFIG_NOSYSTEM=1
 553 GIT_ATTR_NOSYSTEM=1
 554 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 555
 556 if test -z "$GIT_TEST_CMP"
 557 then
 558         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 559         then
 560                 GIT_TEST_CMP="$DIFF -c"
 561         else
 562                 GIT_TEST_CMP="$DIFF -u"
 563         fi
 564 fi
 565
 566 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 567 export GITPERLLIB
 568 test -d "$GIT_BUILD_DIR"/templates/blt || {
 569         error "You haven't built things yet, have you?"
 570 }
 571
 572 if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 573 then
 574         GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
 575         export GITPYTHONLIB
 576         test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
 577                 error "You haven't built git_remote_helpers yet, have you?"
 578         }
 579 fi
 580
 581 if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 582 then
 583         echo >&2 'You need to build test-chmtime:'
 584         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 585         exit 1
 586 fi
 587
 588 # Test repository
 589 test="trash directory.$(basename "$0" .sh)"
 590 test -n "$root" && test="$root/$test"
 591 case "$test" in
 592 /*) TRASH_DIRECTORY="$test" ;;
 593  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$test" ;;
 594 esac
 595 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 596 rm -fr "$test" || {
 597         GIT_EXIT_OK=t
 598         echo >&5 "FATAL: Cannot prepare test area"
 599         exit 1
 600 }
 601
 602 HOME="$TRASH_DIRECTORY"
 603 export HOME
 604
 605 if test -z "$TEST_NO_CREATE_REPO"
 606 then
 607         test_create_repo "$test"
 608 else
 609         mkdir -p "$test"
 610 fi
 611 # Use -P to resolve symlinks in our working directory so that the cwd
 612 # in subprocesses like git equals our $PWD (for pathname comparisons).
 613 cd -P "$test" || exit 1
 614
 615 this_test=${0##*/}
 616 this_test=${this_test%%-*}
 617 for skp in $GIT_SKIP_TESTS
 618 do
 619         case "$this_test" in
 620         $skp)
 621                 say_color skip >&3 "skipping test $this_test altogether"
 622                 skip_all="skip all tests in $this_test"
 623                 test_done
 624         esac
 625 done
 626
 627 # Provide an implementation of the 'yes' utility
 628 yes () {
 629         if test $# = 0
 630         then
 631                 y=y
 632         else
 633                 y="$*"
 634         fi
 635
 636         while echo "$y"
 637         do
 638                 :
 639         done
 640 }
 641
 642 # Fix some commands on Windows
 643 case $(uname -s) in
 644 *MINGW*)
 645         # Windows has its own (incompatible) sort and find
 646         sort () {
 647                 /usr/bin/sort "$@"
 648         }
 649         find () {
 650                 /usr/bin/find "$@"
 651         }
 652         sum () {
 653                 md5sum "$@"
 654         }
 655         # git sees Windows-style pwd
 656         pwd () {
 657                 builtin pwd -W
 658         }
 659         # no POSIX permissions
 660         # backslashes in pathspec are converted to '/'
 661         # exec does not inherit the PID
 662         test_set_prereq MINGW
 663         test_set_prereq SED_STRIPS_CR
 664         ;;
 665 *CYGWIN*)
 666         test_set_prereq POSIXPERM
 667         test_set_prereq EXECKEEPSPID
 668         test_set_prereq NOT_MINGW
 669         test_set_prereq SED_STRIPS_CR
 670         ;;
 671 *)
 672         test_set_prereq POSIXPERM
 673         test_set_prereq BSLASHPSPEC
 674         test_set_prereq EXECKEEPSPID
 675         test_set_prereq NOT_MINGW
 676         ;;
 677 esac
 678
 679 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 680 test -z "$NO_PERL" && test_set_prereq PERL
 681 test -z "$NO_PYTHON" && test_set_prereq PYTHON
 682 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 683 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 684
 685 # Can we rely on git's output in the C locale?
 686 if test -n "$GETTEXT_POISON"
 687 then
 688         GIT_GETTEXT_POISON=YesPlease
 689         export GIT_GETTEXT_POISON
 690         test_set_prereq GETTEXT_POISON
 691 else
 692         test_set_prereq C_LOCALE_OUTPUT
 693 fi
 694
 695 # Use this instead of test_cmp to compare files that are expected to contain
 696 # text (and therefore it should not matter whether the line ends in an LF or
 697 # a CR/LF).
 698 test_cmp_text () {
 699         if test_have_prereq MINGW
 700         then
 701                 dos2unix "$1" &&
 702                 dos2unix "$2"
 703         fi &&
 704         test_cmp "$@"
 705 }
 706
 707 # Use this instead of test_cmp to compare files that contain expected and
 708 # actual output from git commands that can be translated.  When running
 709 # under GETTEXT_POISON this pretends that the command produced expected
 710 # results.
 711 test_i18ncmp () {
 712         test -n "$GETTEXT_POISON" || test_cmp_text "$@"
 713 }
 714
 715 # Use this instead of "grep expected-string actual" to see if the
 716 # output from a git command that can be translated either contains an
 717 # expected string, or does not contain an unwanted one.  When running
 718 # under GETTEXT_POISON this pretends that the command produced expected
 719 # results.
 720 test_i18ngrep () {
 721         if test -n "$GETTEXT_POISON"
 722         then
 723             : # pretend success
 724         elif test "x!" = "x$1"
 725         then
 726                 shift
 727                 ! grep "$@"
 728         else
 729                 grep "$@"
 730         fi
 731 }
 732
 733 test_lazy_prereq SYMLINKS '
 734         # test whether the filesystem supports symbolic links
 735         ln -s x y && test -h y
 736 '
 737
 738 test_lazy_prereq CASE_INSENSITIVE_FS '
 739         echo good >CamelCase &&
 740         echo bad >camelcase &&
 741         test "$(cat CamelCase)" != good
 742 '
 743
 744 test_lazy_prereq UTF8_NFD_TO_NFC '
 745         # check whether FS converts nfd unicode to nfc
 746         auml=$(printf "\303\244")
 747         aumlcdiar=$(printf "\141\314\210")
 748         >"$auml" &&
 749         case "$(echo *)" in
 750         "$aumlcdiar")
 751                 true ;;
 752         *)
 753                 false ;;
 754         esac
 755 '
 756
 757 # When the tests are run as root, permission tests will report that
 758 # things are writable when they shouldn't be.
 759 test -w / || test_set_prereq SANITY