Andrew's git / gitweb.git / t/test-lib.sh
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t / test-lib.shon commit sha1-lookup: handle duplicate keys with GIT_USE_LOOKUP (171bdac)
   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# Keep the original TERM for say_color
  19ORIGINAL_TERM=$TERM
  20
  21# Test the binaries we have just built.  The tests are kept in
  22# t/ subdirectory and are run in 'trash directory' subdirectory.
  23if test -z "$TEST_DIRECTORY"
  24then
  25        # We allow tests to override this, in case they want to run tests
  26        # outside of t/, e.g. for running tests on the test library
  27        # itself.
  28        TEST_DIRECTORY=$(pwd)
  29fi
  30if test -z "$TEST_OUTPUT_DIRECTORY"
  31then
  32        # Similarly, override this to store the test-results subdir
  33        # elsewhere
  34        TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  35fi
  36GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  37
  38################################################################
  39# It appears that people try to run tests without building...
  40"$GIT_BUILD_DIR/git" >/dev/null
  41if test $? != 1
  42then
  43        echo >&2 'error: you do not seem to have built git yet.'
  44        exit 1
  45fi
  46
  47. "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  48export PERL_PATH SHELL_PATH
  49
  50# if --tee was passed, write the output not only to the terminal, but
  51# additionally to the file test-results/$BASENAME.out, too.
  52case "$GIT_TEST_TEE_STARTED, $* " in
  53done,*)
  54        # do not redirect again
  55        ;;
  56*' --tee '*|*' --va'*)
  57        mkdir -p test-results
  58        BASE=test-results/$(basename "$0" .sh)
  59        (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  60         echo $? > $BASE.exit) | tee $BASE.out
  61        test "$(cat $BASE.exit)" = 0
  62        exit
  63        ;;
  64esac
  65
  66# For repeatability, reset the environment to known value.
  67LANG=C
  68LC_ALL=C
  69PAGER=cat
  70TZ=UTC
  71TERM=dumb
  72export LANG LC_ALL PAGER TERM TZ
  73EDITOR=:
  74# A call to "unset" with no arguments causes at least Solaris 10
  75# /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
  76# deriving from the command substitution clustered with the other
  77# ones.
  78unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  79        my @env = keys %ENV;
  80        my $ok = join("|", qw(
  81                TRACE
  82                DEBUG
  83                USE_LOOKUP
  84                TEST
  85                .*_TEST
  86                PROVE
  87                VALGRIND
  88                UNZIP
  89                PERF_
  90        ));
  91        my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  92        print join("\n", @vars);
  93')
  94unset XDG_CONFIG_HOME
  95GIT_AUTHOR_EMAIL=author@example.com
  96GIT_AUTHOR_NAME='A U Thor'
  97GIT_COMMITTER_EMAIL=committer@example.com
  98GIT_COMMITTER_NAME='C O Mitter'
  99GIT_MERGE_VERBOSITY=5
 100GIT_MERGE_AUTOEDIT=no
 101export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 102export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 103export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 104export EDITOR
 105
 106# Add libc MALLOC and MALLOC_PERTURB test
 107# only if we are not executing the test with valgrind
 108if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 109   test -n "$TEST_NO_MALLOC_CHECK"
 110then
 111        setup_malloc_check () {
 112                : nothing
 113        }
 114        teardown_malloc_check () {
 115                : nothing
 116        }
 117else
 118        setup_malloc_check () {
 119                MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 120                export MALLOC_CHECK_ MALLOC_PERTURB_
 121        }
 122        teardown_malloc_check () {
 123                unset MALLOC_CHECK_ MALLOC_PERTURB_
 124        }
 125fi
 126
 127# Protect ourselves from common misconfiguration to export
 128# CDPATH into the environment
 129unset CDPATH
 130
 131unset GREP_OPTIONS
 132unset UNZIP
 133
 134case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 1351|2|true)
 136        echo "* warning: Some tests will not work if GIT_TRACE" \
 137                "is set as to trace on STDERR ! *"
 138        echo "* warning: Please set GIT_TRACE to something" \
 139                "other than 1, 2 or true ! *"
 140        ;;
 141esac
 142
 143# Convenience
 144#
 145# A regexp to match 5 and 40 hexdigits
 146_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 147_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 148
 149# Zero SHA-1
 150_z40=0000000000000000000000000000000000000000
 151
 152# Line feed
 153LF='
 154'
 155
 156export _x05 _x40 _z40 LF
 157
 158# Each test should start with something like this, after copyright notices:
 159#
 160# test_description='Description of this test...
 161# This test checks if command xyzzy does the right thing...
 162# '
 163# . ./test-lib.sh
 164[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 165                TERM=$ORIGINAL_TERM &&
 166                export TERM &&
 167                [ -t 1 ] &&
 168                tput bold >/dev/null 2>&1 &&
 169                tput setaf 1 >/dev/null 2>&1 &&
 170                tput sgr0 >/dev/null 2>&1
 171        ) &&
 172        color=t
 173
 174while test "$#" -ne 0
 175do
 176        case "$1" in
 177        -d|--d|--de|--deb|--debu|--debug)
 178                debug=t; shift ;;
 179        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 180                immediate=t; shift ;;
 181        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 182                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 183        -h|--h|--he|--hel|--help)
 184                help=t; shift ;;
 185        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 186                verbose=t; shift ;;
 187        -q|--q|--qu|--qui|--quie|--quiet)
 188                # Ignore --quiet under a TAP::Harness. Saying how many tests
 189                # passed without the ok/not ok details is always an error.
 190                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 191        --with-dashes)
 192                with_dashes=t; shift ;;
 193        --no-color)
 194                color=; shift ;;
 195        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 196                valgrind=memcheck
 197                shift ;;
 198        --valgrind=*)
 199                valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 200                shift ;;
 201        --tee)
 202                shift ;; # was handled already
 203        --root=*)
 204                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 205                shift ;;
 206        *)
 207                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 208        esac
 209done
 210
 211test -n "$valgrind" && verbose=t
 212
 213if test -n "$color"
 214then
 215        say_color () {
 216                (
 217                TERM=$ORIGINAL_TERM
 218                export TERM
 219                case "$1" in
 220                error)
 221                        tput bold; tput setaf 1;; # bold red
 222                skip)
 223                        tput setaf 4;; # blue
 224                warn)
 225                        tput setaf 3;; # brown/yellow
 226                pass)
 227                        tput setaf 2;; # green
 228                info)
 229                        tput setaf 6;; # cyan
 230                *)
 231                        test -n "$quiet" && return;;
 232                esac
 233                shift
 234                printf "%s" "$*"
 235                tput sgr0
 236                echo
 237                )
 238        }
 239else
 240        say_color() {
 241                test -z "$1" && test -n "$quiet" && return
 242                shift
 243                printf "%s\n" "$*"
 244        }
 245fi
 246
 247error () {
 248        say_color error "error: $*"
 249        GIT_EXIT_OK=t
 250        exit 1
 251}
 252
 253say () {
 254        say_color info "$*"
 255}
 256
 257test "${test_description}" != "" ||
 258error "Test script did not set test_description."
 259
 260if test "$help" = "t"
 261then
 262        echo "$test_description"
 263        exit 0
 264fi
 265
 266exec 5>&1
 267exec 6<&0
 268if test "$verbose" = "t"
 269then
 270        exec 4>&2 3>&1
 271else
 272        exec 4>/dev/null 3>/dev/null
 273fi
 274
 275test_failure=0
 276test_count=0
 277test_fixed=0
 278test_broken=0
 279test_success=0
 280
 281test_external_has_tap=0
 282
 283die () {
 284        code=$?
 285        if test -n "$GIT_EXIT_OK"
 286        then
 287                exit $code
 288        else
 289                echo >&5 "FATAL: Unexpected exit with code $code"
 290                exit 1
 291        fi
 292}
 293
 294GIT_EXIT_OK=
 295trap 'die' EXIT
 296
 297# The user-facing functions are loaded from a separate file so that
 298# test_perf subshells can have them too
 299. "$TEST_DIRECTORY/test-lib-functions.sh"
 300
 301# You are not expected to call test_ok_ and test_failure_ directly, use
 302# the text_expect_* functions instead.
 303
 304test_ok_ () {
 305        test_success=$(($test_success + 1))
 306        say_color "" "ok $test_count - $@"
 307}
 308
 309test_failure_ () {
 310        test_failure=$(($test_failure + 1))
 311        say_color error "not ok $test_count - $1"
 312        shift
 313        echo "$@" | sed -e 's/^/#       /'
 314        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 315}
 316
 317test_known_broken_ok_ () {
 318        test_fixed=$(($test_fixed+1))
 319        say_color error "ok $test_count - $@ # TODO known breakage vanished"
 320}
 321
 322test_known_broken_failure_ () {
 323        test_broken=$(($test_broken+1))
 324        say_color warn "not ok $test_count - $@ # TODO known breakage"
 325}
 326
 327test_debug () {
 328        test "$debug" = "" || eval "$1"
 329}
 330
 331test_eval_ () {
 332        # This is a separate function because some tests use
 333        # "return" to end a test_expect_success block early.
 334        eval </dev/null >&3 2>&4 "$*"
 335}
 336
 337test_run_ () {
 338        test_cleanup=:
 339        expecting_failure=$2
 340        test_eval_ "$1"
 341        eval_ret=$?
 342
 343        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 344        then
 345                setup_malloc_check
 346                test_eval_ "$test_cleanup"
 347                teardown_malloc_check
 348        fi
 349        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 350        then
 351                echo ""
 352        fi
 353        return "$eval_ret"
 354}
 355
 356test_skip () {
 357        test_count=$(($test_count+1))
 358        to_skip=
 359        for skp in $GIT_SKIP_TESTS
 360        do
 361                case $this_test.$test_count in
 362                $skp)
 363                        to_skip=t
 364                        break
 365                esac
 366        done
 367        if test -z "$to_skip" && test -n "$test_prereq" &&
 368           ! test_have_prereq "$test_prereq"
 369        then
 370                to_skip=t
 371        fi
 372        case "$to_skip" in
 373        t)
 374                of_prereq=
 375                if test "$missing_prereq" != "$test_prereq"
 376                then
 377                        of_prereq=" of $test_prereq"
 378                fi
 379
 380                say_color skip >&3 "skipping test: $@"
 381                say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 382                : true
 383                ;;
 384        *)
 385                false
 386                ;;
 387        esac
 388}
 389
 390# stub; perf-lib overrides it
 391test_at_end_hook_ () {
 392        :
 393}
 394
 395test_done () {
 396        GIT_EXIT_OK=t
 397
 398        if test -z "$HARNESS_ACTIVE"
 399        then
 400                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 401                mkdir -p "$test_results_dir"
 402                base=${0##*/}
 403                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 404
 405                cat >>"$test_results_path" <<-EOF
 406                total $test_count
 407                success $test_success
 408                fixed $test_fixed
 409                broken $test_broken
 410                failed $test_failure
 411
 412                EOF
 413        fi
 414
 415        if test "$test_fixed" != 0
 416        then
 417                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 418        fi
 419        if test "$test_broken" != 0
 420        then
 421                say_color warn "# still have $test_broken known breakage(s)"
 422        fi
 423        if test "$test_broken" != 0 || test "$test_fixed" != 0
 424        then
 425                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 426                msg="remaining $test_remaining test(s)"
 427        else
 428                test_remaining=$test_count
 429                msg="$test_count test(s)"
 430        fi
 431        case "$test_failure" in
 432        0)
 433                # Maybe print SKIP message
 434                if test -n "$skip_all" && test $test_count -gt 0
 435                then
 436                        error "Can't use skip_all after running some tests"
 437                fi
 438                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 439
 440                if test $test_external_has_tap -eq 0
 441                then
 442                        if test $test_remaining -gt 0
 443                        then
 444                                say_color pass "# passed all $msg"
 445                        fi
 446                        say "1..$test_count$skip_all"
 447                fi
 448
 449                test -d "$remove_trash" &&
 450                cd "$(dirname "$remove_trash")" &&
 451                rm -rf "$(basename "$remove_trash")"
 452
 453                test_at_end_hook_
 454
 455                exit 0 ;;
 456
 457        *)
 458                if test $test_external_has_tap -eq 0
 459                then
 460                        say_color error "# failed $test_failure among $msg"
 461                        say "1..$test_count"
 462                fi
 463
 464                exit 1 ;;
 465
 466        esac
 467}
 468
 469if test -n "$valgrind"
 470then
 471        make_symlink () {
 472                test -h "$2" &&
 473                test "$1" = "$(readlink "$2")" || {
 474                        # be super paranoid
 475                        if mkdir "$2".lock
 476                        then
 477                                rm -f "$2" &&
 478                                ln -s "$1" "$2" &&
 479                                rm -r "$2".lock
 480                        else
 481                                while test -d "$2".lock
 482                                do
 483                                        say "Waiting for lock on $2."
 484                                        sleep 1
 485                                done
 486                        fi
 487                }
 488        }
 489
 490        make_valgrind_symlink () {
 491                # handle only executables, unless they are shell libraries that
 492                # need to be in the exec-path.  We will just use "#!" as a
 493                # guess for a shell-script, since we have no idea what the user
 494                # may have configured as the shell path.
 495                test -x "$1" ||
 496                test "#!" = "$(head -c 2 <"$1")" ||
 497                return;
 498
 499                base=$(basename "$1")
 500                symlink_target=$GIT_BUILD_DIR/$base
 501                # do not override scripts
 502                if test -x "$symlink_target" &&
 503                    test ! -d "$symlink_target" &&
 504                    test "#!" != "$(head -c 2 < "$symlink_target")"
 505                then
 506                        symlink_target=../valgrind.sh
 507                fi
 508                case "$base" in
 509                *.sh|*.perl)
 510                        symlink_target=../unprocessed-script
 511                esac
 512                # create the link, or replace it if it is out of date
 513                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 514        }
 515
 516        # override all git executables in TEST_DIRECTORY/..
 517        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 518        mkdir -p "$GIT_VALGRIND"/bin
 519        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 520        do
 521                make_valgrind_symlink $file
 522        done
 523        # special-case the mergetools loadables
 524        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 525        OLDIFS=$IFS
 526        IFS=:
 527        for path in $PATH
 528        do
 529                ls "$path"/git-* 2> /dev/null |
 530                while read file
 531                do
 532                        make_valgrind_symlink "$file"
 533                done
 534        done
 535        IFS=$OLDIFS
 536        PATH=$GIT_VALGRIND/bin:$PATH
 537        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 538        export GIT_VALGRIND
 539        GIT_VALGRIND_MODE="$valgrind"
 540        export GIT_VALGRIND_MODE
 541elif test -n "$GIT_TEST_INSTALLED"
 542then
 543        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 544        error "Cannot run git from $GIT_TEST_INSTALLED."
 545        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 546        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 547else # normal case, use ../bin-wrappers only unless $with_dashes:
 548        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 549        if ! test -x "$git_bin_dir/git"
 550        then
 551                if test -z "$with_dashes"
 552                then
 553                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 554                fi
 555                with_dashes=t
 556        fi
 557        PATH="$git_bin_dir:$PATH"
 558        GIT_EXEC_PATH=$GIT_BUILD_DIR
 559        if test -n "$with_dashes"
 560        then
 561                PATH="$GIT_BUILD_DIR:$PATH"
 562        fi
 563fi
 564GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 565unset GIT_CONFIG
 566GIT_CONFIG_NOSYSTEM=1
 567GIT_ATTR_NOSYSTEM=1
 568export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 569
 570if test -z "$GIT_TEST_CMP"
 571then
 572        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 573        then
 574                GIT_TEST_CMP="$DIFF -c"
 575        else
 576                GIT_TEST_CMP="$DIFF -u"
 577        fi
 578fi
 579
 580GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 581export GITPERLLIB
 582test -d "$GIT_BUILD_DIR"/templates/blt || {
 583        error "You haven't built things yet, have you?"
 584}
 585
 586if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 587then
 588        GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
 589        export GITPYTHONLIB
 590        test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
 591                error "You haven't built git_remote_helpers yet, have you?"
 592        }
 593fi
 594
 595if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 596then
 597        echo >&2 'You need to build test-chmtime:'
 598        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 599        exit 1
 600fi
 601
 602# Test repository
 603TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 604test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 605case "$TRASH_DIRECTORY" in
 606/*) ;; # absolute path is good
 607 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 608esac
 609test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 610rm -fr "$TRASH_DIRECTORY" || {
 611        GIT_EXIT_OK=t
 612        echo >&5 "FATAL: Cannot prepare test area"
 613        exit 1
 614}
 615
 616HOME="$TRASH_DIRECTORY"
 617export HOME
 618
 619if test -z "$TEST_NO_CREATE_REPO"
 620then
 621        test_create_repo "$TRASH_DIRECTORY"
 622else
 623        mkdir -p "$TRASH_DIRECTORY"
 624fi
 625# Use -P to resolve symlinks in our working directory so that the cwd
 626# in subprocesses like git equals our $PWD (for pathname comparisons).
 627cd -P "$TRASH_DIRECTORY" || exit 1
 628
 629this_test=${0##*/}
 630this_test=${this_test%%-*}
 631for skp in $GIT_SKIP_TESTS
 632do
 633        case "$this_test" in
 634        $skp)
 635                say_color info >&3 "skipping test $this_test altogether"
 636                skip_all="skip all tests in $this_test"
 637                test_done
 638        esac
 639done
 640
 641# Provide an implementation of the 'yes' utility
 642yes () {
 643        if test $# = 0
 644        then
 645                y=y
 646        else
 647                y="$*"
 648        fi
 649
 650        while echo "$y"
 651        do
 652                :
 653        done
 654}
 655
 656# Fix some commands on Windows
 657case $(uname -s) in
 658*MINGW*)
 659        # Windows has its own (incompatible) sort and find
 660        sort () {
 661                /usr/bin/sort "$@"
 662        }
 663        find () {
 664                /usr/bin/find "$@"
 665        }
 666        sum () {
 667                md5sum "$@"
 668        }
 669        # git sees Windows-style pwd
 670        pwd () {
 671                builtin pwd -W
 672        }
 673        # no POSIX permissions
 674        # backslashes in pathspec are converted to '/'
 675        # exec does not inherit the PID
 676        test_set_prereq MINGW
 677        test_set_prereq NOT_CYGWIN
 678        test_set_prereq SED_STRIPS_CR
 679        ;;
 680*CYGWIN*)
 681        test_set_prereq POSIXPERM
 682        test_set_prereq EXECKEEPSPID
 683        test_set_prereq NOT_MINGW
 684        test_set_prereq CYGWIN
 685        test_set_prereq SED_STRIPS_CR
 686        ;;
 687*)
 688        test_set_prereq POSIXPERM
 689        test_set_prereq BSLASHPSPEC
 690        test_set_prereq EXECKEEPSPID
 691        test_set_prereq NOT_MINGW
 692        test_set_prereq NOT_CYGWIN
 693        ;;
 694esac
 695
 696( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 697test -z "$NO_PERL" && test_set_prereq PERL
 698test -z "$NO_PYTHON" && test_set_prereq PYTHON
 699test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 700test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 701
 702# Can we rely on git's output in the C locale?
 703if test -n "$GETTEXT_POISON"
 704then
 705        GIT_GETTEXT_POISON=YesPlease
 706        export GIT_GETTEXT_POISON
 707        test_set_prereq GETTEXT_POISON
 708else
 709        test_set_prereq C_LOCALE_OUTPUT
 710fi
 711
 712# Use this instead of test_cmp to compare files that contain expected and
 713# actual output from git commands that can be translated.  When running
 714# under GETTEXT_POISON this pretends that the command produced expected
 715# results.
 716test_i18ncmp () {
 717        test -n "$GETTEXT_POISON" || test_cmp "$@"
 718}
 719
 720# Use this instead of "grep expected-string actual" to see if the
 721# output from a git command that can be translated either contains an
 722# expected string, or does not contain an unwanted one.  When running
 723# under GETTEXT_POISON this pretends that the command produced expected
 724# results.
 725test_i18ngrep () {
 726        if test -n "$GETTEXT_POISON"
 727        then
 728            : # pretend success
 729        elif test "x!" = "x$1"
 730        then
 731                shift
 732                ! grep "$@"
 733        else
 734                grep "$@"
 735        fi
 736}
 737
 738test_lazy_prereq PIPE '
 739        # test whether the filesystem supports FIFOs
 740        rm -f testfifo && mkfifo testfifo
 741'
 742
 743test_lazy_prereq SYMLINKS '
 744        # test whether the filesystem supports symbolic links
 745        ln -s x y && test -h y
 746'
 747
 748test_lazy_prereq CASE_INSENSITIVE_FS '
 749        echo good >CamelCase &&
 750        echo bad >camelcase &&
 751        test "$(cat CamelCase)" != good
 752'
 753
 754test_lazy_prereq UTF8_NFD_TO_NFC '
 755        # check whether FS converts nfd unicode to nfc
 756        auml=$(printf "\303\244")
 757        aumlcdiar=$(printf "\141\314\210")
 758        >"$auml" &&
 759        case "$(echo *)" in
 760        "$aumlcdiar")
 761                true ;;
 762        *)
 763                false ;;
 764        esac
 765'
 766
 767test_lazy_prereq AUTOIDENT '
 768        sane_unset GIT_AUTHOR_NAME &&
 769        sane_unset GIT_AUTHOR_EMAIL &&
 770        git var GIT_AUTHOR_IDENT
 771'
 772
 773# When the tests are run as root, permission tests will report that
 774# things are writable when they shouldn't be.
 775test -w / || test_set_prereq SANITY
 776
 777GIT_UNZIP=${GIT_UNZIP:-unzip}
 778test_lazy_prereq UNZIP '
 779        "$GIT_UNZIP" -v
 780        test $? -ne 127
 781'