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