Andrew's git / gitweb.git / t/test-lib.sh
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t / test-lib.shon commit Add MALLOC_CHECK_ and MALLOC_PERTURB_ libc env to the test suite for detecting heap corruption (a731fa9)
   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/$BASENAME.out, too.
  20case "$GIT_TEST_TEE_STARTED, $* " in
  21done,*)
  22        # do not redirect again
  23        ;;
  24*' --tee '*|*' --va'*)
  25        mkdir -p test-results
  26        BASE=test-results/$(basename "$0" .sh)
  27        (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
  28         echo $? > $BASE.exit) | tee $BASE.out
  29        test "$(cat $BASE.exit)" = 0
  30        exit
  31        ;;
  32esac
  33
  34# Keep the original TERM for say_color
  35ORIGINAL_TERM=$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.
  39if test -z "$TEST_DIRECTORY"
  40then
  41        # We allow tests to override this, in case they want to run tests
  42        # outside of t/, e.g. for running tests on the test library
  43        # itself.
  44        TEST_DIRECTORY=$(pwd)
  45fi
  46if test -z "$TEST_OUTPUT_DIRECTORY"
  47then
  48        # Similarly, override this to store the test-results subdir
  49        # elsewhere
  50        TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  51fi
  52GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  53
  54. "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  55export PERL_PATH SHELL_PATH
  56
  57# For repeatability, reset the environment to known value.
  58LANG=C
  59LC_ALL=C
  60PAGER=cat
  61TZ=UTC
  62TERM=dumb
  63export LANG LC_ALL PAGER TERM TZ
  64EDITOR=:
  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.
  69unset 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')
  84unset XDG_CONFIG_HOME
  85GIT_AUTHOR_EMAIL=author@example.com
  86GIT_AUTHOR_NAME='A U Thor'
  87GIT_COMMITTER_EMAIL=committer@example.com
  88GIT_COMMITTER_NAME='C O Mitter'
  89GIT_MERGE_VERBOSITY=5
  90GIT_MERGE_AUTOEDIT=no
  91export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
  92export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
  93export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
  94export EDITOR
  95
  96# Add libc MALLOC and MALLOC_PERTURB test
  97# only if we are not executing the test with valgrind
  98expr "$GIT_TEST_OPTS" : ".*\(--valgrind\)" >/dev/null || {
  99        MALLOC_CHECK_=3
 100        export MALLOC_CHECK_
 101        MALLOC_PERTURB_="$( expr \( $$ % 255 \) + 1)"
 102        export MALLOC_PERTURB_
 103}
 104
 105# Protect ourselves from common misconfiguration to export
 106# CDPATH into the environment
 107unset CDPATH
 108
 109unset GREP_OPTIONS
 110
 111case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 1121|2|true)
 113        echo "* warning: Some tests will not work if GIT_TRACE" \
 114                "is set as to trace on STDERR ! *"
 115        echo "* warning: Please set GIT_TRACE to something" \
 116                "other than 1, 2 or true ! *"
 117        ;;
 118esac
 119
 120# Convenience
 121#
 122# A regexp to match 5 and 40 hexdigits
 123_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 124_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 125
 126# Zero SHA-1
 127_z40=0000000000000000000000000000000000000000
 128
 129# Line feed
 130LF='
 131'
 132
 133export _x05 _x40 _z40 LF
 134
 135# Each test should start with something like this, after copyright notices:
 136#
 137# test_description='Description of this test...
 138# This test checks if command xyzzy does the right thing...
 139# '
 140# . ./test-lib.sh
 141[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 142                TERM=$ORIGINAL_TERM &&
 143                export TERM &&
 144                [ -t 1 ] &&
 145                tput bold >/dev/null 2>&1 &&
 146                tput setaf 1 >/dev/null 2>&1 &&
 147                tput sgr0 >/dev/null 2>&1
 148        ) &&
 149        color=t
 150
 151while test "$#" -ne 0
 152do
 153        case "$1" in
 154        -d|--d|--de|--deb|--debu|--debug)
 155                debug=t; shift ;;
 156        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 157                immediate=t; shift ;;
 158        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 159                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 160        -h|--h|--he|--hel|--help)
 161                help=t; shift ;;
 162        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 163                verbose=t; shift ;;
 164        -q|--q|--qu|--qui|--quie|--quiet)
 165                # Ignore --quiet under a TAP::Harness. Saying how many tests
 166                # passed without the ok/not ok details is always an error.
 167                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 168        --with-dashes)
 169                with_dashes=t; shift ;;
 170        --no-color)
 171                color=; shift ;;
 172        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 173                valgrind=t; verbose=t; shift ;;
 174        --tee)
 175                shift ;; # was handled already
 176        --root=*)
 177                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 178                shift ;;
 179        *)
 180                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 181        esac
 182done
 183
 184if test -n "$color"
 185then
 186        say_color () {
 187                (
 188                TERM=$ORIGINAL_TERM
 189                export TERM
 190                case "$1" in
 191                error)
 192                        tput bold; tput setaf 1;; # bold red
 193                skip)
 194                        tput bold; tput setaf 2;; # bold green
 195                pass)
 196                        tput setaf 2;;            # green
 197                info)
 198                        tput setaf 3;;            # brown
 199                *)
 200                        test -n "$quiet" && return;;
 201                esac
 202                shift
 203                printf "%s" "$*"
 204                tput sgr0
 205                echo
 206                )
 207        }
 208else
 209        say_color() {
 210                test -z "$1" && test -n "$quiet" && return
 211                shift
 212                echo "$*"
 213        }
 214fi
 215
 216error () {
 217        say_color error "error: $*"
 218        GIT_EXIT_OK=t
 219        exit 1
 220}
 221
 222say () {
 223        say_color info "$*"
 224}
 225
 226test "${test_description}" != "" ||
 227error "Test script did not set test_description."
 228
 229if test "$help" = "t"
 230then
 231        echo "$test_description"
 232        exit 0
 233fi
 234
 235exec 5>&1
 236exec 6<&0
 237if test "$verbose" = "t"
 238then
 239        exec 4>&2 3>&1
 240else
 241        exec 4>/dev/null 3>/dev/null
 242fi
 243
 244test_failure=0
 245test_count=0
 246test_fixed=0
 247test_broken=0
 248test_success=0
 249
 250test_external_has_tap=0
 251
 252die () {
 253        code=$?
 254        if test -n "$GIT_EXIT_OK"
 255        then
 256                exit $code
 257        else
 258                echo >&5 "FATAL: Unexpected exit with code $code"
 259                exit 1
 260        fi
 261}
 262
 263GIT_EXIT_OK=
 264trap 'die' EXIT
 265
 266# The user-facing functions are loaded from a separate file so that
 267# test_perf subshells can have them too
 268. "$TEST_DIRECTORY/test-lib-functions.sh"
 269
 270# You are not expected to call test_ok_ and test_failure_ directly, use
 271# the text_expect_* functions instead.
 272
 273test_ok_ () {
 274        test_success=$(($test_success + 1))
 275        say_color "" "ok $test_count - $@"
 276}
 277
 278test_failure_ () {
 279        test_failure=$(($test_failure + 1))
 280        say_color error "not ok - $test_count $1"
 281        shift
 282        echo "$@" | sed -e 's/^/#       /'
 283        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 284}
 285
 286test_known_broken_ok_ () {
 287        test_fixed=$(($test_fixed+1))
 288        say_color "" "ok $test_count - $@ # TODO known breakage"
 289}
 290
 291test_known_broken_failure_ () {
 292        test_broken=$(($test_broken+1))
 293        say_color skip "not ok $test_count - $@ # TODO known breakage"
 294}
 295
 296test_debug () {
 297        test "$debug" = "" || eval "$1"
 298}
 299
 300test_eval_ () {
 301        # This is a separate function because some tests use
 302        # "return" to end a test_expect_success block early.
 303        eval </dev/null >&3 2>&4 "$*"
 304}
 305
 306test_run_ () {
 307        test_cleanup=:
 308        expecting_failure=$2
 309        test_eval_ "$1"
 310        eval_ret=$?
 311
 312        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 313        then
 314                test_eval_ "$test_cleanup"
 315        fi
 316        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 317        then
 318                echo ""
 319        fi
 320        return "$eval_ret"
 321}
 322
 323test_skip () {
 324        test_count=$(($test_count+1))
 325        to_skip=
 326        for skp in $GIT_SKIP_TESTS
 327        do
 328                case $this_test.$test_count in
 329                $skp)
 330                        to_skip=t
 331                        break
 332                esac
 333        done
 334        if test -z "$to_skip" && test -n "$test_prereq" &&
 335           ! test_have_prereq "$test_prereq"
 336        then
 337                to_skip=t
 338        fi
 339        case "$to_skip" in
 340        t)
 341                of_prereq=
 342                if test "$missing_prereq" != "$test_prereq"
 343                then
 344                        of_prereq=" of $test_prereq"
 345                fi
 346
 347                say_color skip >&3 "skipping test: $@"
 348                say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 349                : true
 350                ;;
 351        *)
 352                false
 353                ;;
 354        esac
 355}
 356
 357# stub; perf-lib overrides it
 358test_at_end_hook_ () {
 359        :
 360}
 361
 362test_done () {
 363        GIT_EXIT_OK=t
 364
 365        if test -z "$HARNESS_ACTIVE"
 366        then
 367                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 368                mkdir -p "$test_results_dir"
 369                test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 370
 371                cat >>"$test_results_path" <<-EOF
 372                total $test_count
 373                success $test_success
 374                fixed $test_fixed
 375                broken $test_broken
 376                failed $test_failure
 377
 378                EOF
 379        fi
 380
 381        if test "$test_fixed" != 0
 382        then
 383                say_color pass "# fixed $test_fixed known breakage(s)"
 384        fi
 385        if test "$test_broken" != 0
 386        then
 387                say_color error "# still have $test_broken known breakage(s)"
 388                msg="remaining $(($test_count-$test_broken)) test(s)"
 389        else
 390                msg="$test_count test(s)"
 391        fi
 392        case "$test_failure" in
 393        0)
 394                # Maybe print SKIP message
 395                if test -n "$skip_all" && test $test_count -gt 0
 396                then
 397                        error "Can't use skip_all after running some tests"
 398                fi
 399                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 400
 401                if test $test_external_has_tap -eq 0
 402                then
 403                        if test $test_count -gt 0
 404                        then
 405                                say_color pass "# passed all $msg"
 406                        fi
 407                        say "1..$test_count$skip_all"
 408                fi
 409
 410                test -d "$remove_trash" &&
 411                cd "$(dirname "$remove_trash")" &&
 412                rm -rf "$(basename "$remove_trash")"
 413
 414                test_at_end_hook_
 415
 416                exit 0 ;;
 417
 418        *)
 419                if test $test_external_has_tap -eq 0
 420                then
 421                        say_color error "# failed $test_failure among $msg"
 422                        say "1..$test_count"
 423                fi
 424
 425                exit 1 ;;
 426
 427        esac
 428}
 429
 430if test -n "$valgrind"
 431then
 432        make_symlink () {
 433                test -h "$2" &&
 434                test "$1" = "$(readlink "$2")" || {
 435                        # be super paranoid
 436                        if mkdir "$2".lock
 437                        then
 438                                rm -f "$2" &&
 439                                ln -s "$1" "$2" &&
 440                                rm -r "$2".lock
 441                        else
 442                                while test -d "$2".lock
 443                                do
 444                                        say "Waiting for lock on $2."
 445                                        sleep 1
 446                                done
 447                        fi
 448                }
 449        }
 450
 451        make_valgrind_symlink () {
 452                # handle only executables, unless they are shell libraries that
 453                # need to be in the exec-path.  We will just use "#!" as a
 454                # guess for a shell-script, since we have no idea what the user
 455                # may have configured as the shell path.
 456                test -x "$1" ||
 457                test "#!" = "$(head -c 2 <"$1")" ||
 458                return;
 459
 460                base=$(basename "$1")
 461                symlink_target=$GIT_BUILD_DIR/$base
 462                # do not override scripts
 463                if test -x "$symlink_target" &&
 464                    test ! -d "$symlink_target" &&
 465                    test "#!" != "$(head -c 2 < "$symlink_target")"
 466                then
 467                        symlink_target=../valgrind.sh
 468                fi
 469                case "$base" in
 470                *.sh|*.perl)
 471                        symlink_target=../unprocessed-script
 472                esac
 473                # create the link, or replace it if it is out of date
 474                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 475        }
 476
 477        # override all git executables in TEST_DIRECTORY/..
 478        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 479        mkdir -p "$GIT_VALGRIND"/bin
 480        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 481        do
 482                make_valgrind_symlink $file
 483        done
 484        # special-case the mergetools loadables
 485        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 486        OLDIFS=$IFS
 487        IFS=:
 488        for path in $PATH
 489        do
 490                ls "$path"/git-* 2> /dev/null |
 491                while read file
 492                do
 493                        make_valgrind_symlink "$file"
 494                done
 495        done
 496        IFS=$OLDIFS
 497        PATH=$GIT_VALGRIND/bin:$PATH
 498        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 499        export GIT_VALGRIND
 500elif test -n "$GIT_TEST_INSTALLED"
 501then
 502        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 503        error "Cannot run git from $GIT_TEST_INSTALLED."
 504        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 505        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 506else # normal case, use ../bin-wrappers only unless $with_dashes:
 507        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 508        if ! test -x "$git_bin_dir/git"
 509        then
 510                if test -z "$with_dashes"
 511                then
 512                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 513                fi
 514                with_dashes=t
 515        fi
 516        PATH="$git_bin_dir:$PATH"
 517        GIT_EXEC_PATH=$GIT_BUILD_DIR
 518        if test -n "$with_dashes"
 519        then
 520                PATH="$GIT_BUILD_DIR:$PATH"
 521        fi
 522fi
 523GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 524unset GIT_CONFIG
 525GIT_CONFIG_NOSYSTEM=1
 526GIT_ATTR_NOSYSTEM=1
 527export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 528
 529if test -z "$GIT_TEST_CMP"
 530then
 531        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 532        then
 533                GIT_TEST_CMP="$DIFF -c"
 534        else
 535                GIT_TEST_CMP="$DIFF -u"
 536        fi
 537fi
 538
 539GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 540export GITPERLLIB
 541test -d "$GIT_BUILD_DIR"/templates/blt || {
 542        error "You haven't built things yet, have you?"
 543}
 544
 545if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 546then
 547        GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
 548        export GITPYTHONLIB
 549        test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
 550                error "You haven't built git_remote_helpers yet, have you?"
 551        }
 552fi
 553
 554if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 555then
 556        echo >&2 'You need to build test-chmtime:'
 557        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 558        exit 1
 559fi
 560
 561# Test repository
 562test="trash directory.$(basename "$0" .sh)"
 563test -n "$root" && test="$root/$test"
 564case "$test" in
 565/*) TRASH_DIRECTORY="$test" ;;
 566 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$test" ;;
 567esac
 568test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 569rm -fr "$test" || {
 570        GIT_EXIT_OK=t
 571        echo >&5 "FATAL: Cannot prepare test area"
 572        exit 1
 573}
 574
 575HOME="$TRASH_DIRECTORY"
 576export HOME
 577
 578if test -z "$TEST_NO_CREATE_REPO"
 579then
 580        test_create_repo "$test"
 581else
 582        mkdir -p "$test"
 583fi
 584# Use -P to resolve symlinks in our working directory so that the cwd
 585# in subprocesses like git equals our $PWD (for pathname comparisons).
 586cd -P "$test" || exit 1
 587
 588this_test=${0##*/}
 589this_test=${this_test%%-*}
 590for skp in $GIT_SKIP_TESTS
 591do
 592        case "$this_test" in
 593        $skp)
 594                say_color skip >&3 "skipping test $this_test altogether"
 595                skip_all="skip all tests in $this_test"
 596                test_done
 597        esac
 598done
 599
 600# Provide an implementation of the 'yes' utility
 601yes () {
 602        if test $# = 0
 603        then
 604                y=y
 605        else
 606                y="$*"
 607        fi
 608
 609        while echo "$y"
 610        do
 611                :
 612        done
 613}
 614
 615# Fix some commands on Windows
 616case $(uname -s) in
 617*MINGW*)
 618        # Windows has its own (incompatible) sort and find
 619        sort () {
 620                /usr/bin/sort "$@"
 621        }
 622        find () {
 623                /usr/bin/find "$@"
 624        }
 625        sum () {
 626                md5sum "$@"
 627        }
 628        # git sees Windows-style pwd
 629        pwd () {
 630                builtin pwd -W
 631        }
 632        # no POSIX permissions
 633        # backslashes in pathspec are converted to '/'
 634        # exec does not inherit the PID
 635        test_set_prereq MINGW
 636        test_set_prereq SED_STRIPS_CR
 637        ;;
 638*CYGWIN*)
 639        test_set_prereq POSIXPERM
 640        test_set_prereq EXECKEEPSPID
 641        test_set_prereq NOT_MINGW
 642        test_set_prereq SED_STRIPS_CR
 643        ;;
 644*)
 645        test_set_prereq POSIXPERM
 646        test_set_prereq BSLASHPSPEC
 647        test_set_prereq EXECKEEPSPID
 648        test_set_prereq NOT_MINGW
 649        ;;
 650esac
 651
 652( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 653test -z "$NO_PERL" && test_set_prereq PERL
 654test -z "$NO_PYTHON" && test_set_prereq PYTHON
 655test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 656test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 657
 658# Can we rely on git's output in the C locale?
 659if test -n "$GETTEXT_POISON"
 660then
 661        GIT_GETTEXT_POISON=YesPlease
 662        export GIT_GETTEXT_POISON
 663        test_set_prereq GETTEXT_POISON
 664else
 665        test_set_prereq C_LOCALE_OUTPUT
 666fi
 667
 668# Use this instead of test_cmp to compare files that contain expected and
 669# actual output from git commands that can be translated.  When running
 670# under GETTEXT_POISON this pretends that the command produced expected
 671# results.
 672test_i18ncmp () {
 673        test -n "$GETTEXT_POISON" || test_cmp "$@"
 674}
 675
 676# Use this instead of "grep expected-string actual" to see if the
 677# output from a git command that can be translated either contains an
 678# expected string, or does not contain an unwanted one.  When running
 679# under GETTEXT_POISON this pretends that the command produced expected
 680# results.
 681test_i18ngrep () {
 682        if test -n "$GETTEXT_POISON"
 683        then
 684            : # pretend success
 685        elif test "x!" = "x$1"
 686        then
 687                shift
 688                ! grep "$@"
 689        else
 690                grep "$@"
 691        fi
 692}
 693
 694test_lazy_prereq SYMLINKS '
 695        # test whether the filesystem supports symbolic links
 696        ln -s x y && test -h y
 697'
 698
 699test_lazy_prereq CASE_INSENSITIVE_FS '
 700        echo good >CamelCase &&
 701        echo bad >camelcase &&
 702        test "$(cat CamelCase)" != good
 703'
 704
 705test_lazy_prereq UTF8_NFD_TO_NFC '
 706        # check whether FS converts nfd unicode to nfc
 707        auml=$(printf "\303\244")
 708        aumlcdiar=$(printf "\141\314\210")
 709        >"$auml" &&
 710        case "$(echo *)" in
 711        "$aumlcdiar")
 712                true ;;
 713        *)
 714                false ;;
 715        esac
 716'
 717
 718# When the tests are run as root, permission tests will report that
 719# things are writable when they shouldn't be.
 720test -w / || test_set_prereq SANITY