Andrew's git / gitweb.git / t/test-lib.sh
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t / test-lib.shon commit test-lib: rearrange start/end of test_expect_* and test_skip (ae75342)
   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
 331match_pattern_list () {
 332        arg="$1"
 333        shift
 334        test -z "$*" && return 1
 335        for pattern_
 336        do
 337                case "$arg" in
 338                $pattern_)
 339                        return 0
 340                esac
 341        done
 342        return 1
 343}
 344
 345test_eval_ () {
 346        # This is a separate function because some tests use
 347        # "return" to end a test_expect_success block early.
 348        eval </dev/null >&3 2>&4 "$*"
 349}
 350
 351test_run_ () {
 352        test_cleanup=:
 353        expecting_failure=$2
 354        setup_malloc_check
 355        test_eval_ "$1"
 356        eval_ret=$?
 357        teardown_malloc_check
 358
 359        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 360        then
 361                setup_malloc_check
 362                test_eval_ "$test_cleanup"
 363                teardown_malloc_check
 364        fi
 365        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 366        then
 367                echo ""
 368        fi
 369        return "$eval_ret"
 370}
 371
 372test_start_ () {
 373        test_count=$(($test_count+1))
 374}
 375
 376test_finish_ () {
 377        echo >&3 ""
 378}
 379
 380test_skip () {
 381        to_skip=
 382        if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 383        then
 384                to_skip=t
 385        fi
 386        if test -z "$to_skip" && test -n "$test_prereq" &&
 387           ! test_have_prereq "$test_prereq"
 388        then
 389                to_skip=t
 390        fi
 391        case "$to_skip" in
 392        t)
 393                of_prereq=
 394                if test "$missing_prereq" != "$test_prereq"
 395                then
 396                        of_prereq=" of $test_prereq"
 397                fi
 398
 399                say_color skip >&3 "skipping test: $@"
 400                say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 401                : true
 402                ;;
 403        *)
 404                false
 405                ;;
 406        esac
 407}
 408
 409# stub; perf-lib overrides it
 410test_at_end_hook_ () {
 411        :
 412}
 413
 414test_done () {
 415        GIT_EXIT_OK=t
 416
 417        if test -z "$HARNESS_ACTIVE"
 418        then
 419                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 420                mkdir -p "$test_results_dir"
 421                base=${0##*/}
 422                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 423
 424                cat >>"$test_results_path" <<-EOF
 425                total $test_count
 426                success $test_success
 427                fixed $test_fixed
 428                broken $test_broken
 429                failed $test_failure
 430
 431                EOF
 432        fi
 433
 434        if test "$test_fixed" != 0
 435        then
 436                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 437        fi
 438        if test "$test_broken" != 0
 439        then
 440                say_color warn "# still have $test_broken known breakage(s)"
 441        fi
 442        if test "$test_broken" != 0 || test "$test_fixed" != 0
 443        then
 444                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 445                msg="remaining $test_remaining test(s)"
 446        else
 447                test_remaining=$test_count
 448                msg="$test_count test(s)"
 449        fi
 450        case "$test_failure" in
 451        0)
 452                # Maybe print SKIP message
 453                if test -n "$skip_all" && test $test_count -gt 0
 454                then
 455                        error "Can't use skip_all after running some tests"
 456                fi
 457                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 458
 459                if test $test_external_has_tap -eq 0
 460                then
 461                        if test $test_remaining -gt 0
 462                        then
 463                                say_color pass "# passed all $msg"
 464                        fi
 465                        say "1..$test_count$skip_all"
 466                fi
 467
 468                test -d "$remove_trash" &&
 469                cd "$(dirname "$remove_trash")" &&
 470                rm -rf "$(basename "$remove_trash")"
 471
 472                test_at_end_hook_
 473
 474                exit 0 ;;
 475
 476        *)
 477                if test $test_external_has_tap -eq 0
 478                then
 479                        say_color error "# failed $test_failure among $msg"
 480                        say "1..$test_count"
 481                fi
 482
 483                exit 1 ;;
 484
 485        esac
 486}
 487
 488if test -n "$valgrind"
 489then
 490        make_symlink () {
 491                test -h "$2" &&
 492                test "$1" = "$(readlink "$2")" || {
 493                        # be super paranoid
 494                        if mkdir "$2".lock
 495                        then
 496                                rm -f "$2" &&
 497                                ln -s "$1" "$2" &&
 498                                rm -r "$2".lock
 499                        else
 500                                while test -d "$2".lock
 501                                do
 502                                        say "Waiting for lock on $2."
 503                                        sleep 1
 504                                done
 505                        fi
 506                }
 507        }
 508
 509        make_valgrind_symlink () {
 510                # handle only executables, unless they are shell libraries that
 511                # need to be in the exec-path.  We will just use "#!" as a
 512                # guess for a shell-script, since we have no idea what the user
 513                # may have configured as the shell path.
 514                test -x "$1" ||
 515                test "#!" = "$(head -c 2 <"$1")" ||
 516                return;
 517
 518                base=$(basename "$1")
 519                symlink_target=$GIT_BUILD_DIR/$base
 520                # do not override scripts
 521                if test -x "$symlink_target" &&
 522                    test ! -d "$symlink_target" &&
 523                    test "#!" != "$(head -c 2 < "$symlink_target")"
 524                then
 525                        symlink_target=../valgrind.sh
 526                fi
 527                case "$base" in
 528                *.sh|*.perl)
 529                        symlink_target=../unprocessed-script
 530                esac
 531                # create the link, or replace it if it is out of date
 532                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 533        }
 534
 535        # override all git executables in TEST_DIRECTORY/..
 536        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 537        mkdir -p "$GIT_VALGRIND"/bin
 538        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 539        do
 540                make_valgrind_symlink $file
 541        done
 542        # special-case the mergetools loadables
 543        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 544        OLDIFS=$IFS
 545        IFS=:
 546        for path in $PATH
 547        do
 548                ls "$path"/git-* 2> /dev/null |
 549                while read file
 550                do
 551                        make_valgrind_symlink "$file"
 552                done
 553        done
 554        IFS=$OLDIFS
 555        PATH=$GIT_VALGRIND/bin:$PATH
 556        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 557        export GIT_VALGRIND
 558        GIT_VALGRIND_MODE="$valgrind"
 559        export GIT_VALGRIND_MODE
 560elif test -n "$GIT_TEST_INSTALLED"
 561then
 562        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 563        error "Cannot run git from $GIT_TEST_INSTALLED."
 564        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 565        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 566else # normal case, use ../bin-wrappers only unless $with_dashes:
 567        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 568        if ! test -x "$git_bin_dir/git"
 569        then
 570                if test -z "$with_dashes"
 571                then
 572                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 573                fi
 574                with_dashes=t
 575        fi
 576        PATH="$git_bin_dir:$PATH"
 577        GIT_EXEC_PATH=$GIT_BUILD_DIR
 578        if test -n "$with_dashes"
 579        then
 580                PATH="$GIT_BUILD_DIR:$PATH"
 581        fi
 582fi
 583GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 584unset GIT_CONFIG
 585GIT_CONFIG_NOSYSTEM=1
 586GIT_ATTR_NOSYSTEM=1
 587export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 588
 589if test -z "$GIT_TEST_CMP"
 590then
 591        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 592        then
 593                GIT_TEST_CMP="$DIFF -c"
 594        else
 595                GIT_TEST_CMP="$DIFF -u"
 596        fi
 597fi
 598
 599GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 600export GITPERLLIB
 601test -d "$GIT_BUILD_DIR"/templates/blt || {
 602        error "You haven't built things yet, have you?"
 603}
 604
 605if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
 606then
 607        GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
 608        export GITPYTHONLIB
 609        test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
 610                error "You haven't built git_remote_helpers yet, have you?"
 611        }
 612fi
 613
 614if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 615then
 616        echo >&2 'You need to build test-chmtime:'
 617        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 618        exit 1
 619fi
 620
 621# Test repository
 622TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 623test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 624case "$TRASH_DIRECTORY" in
 625/*) ;; # absolute path is good
 626 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 627esac
 628test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 629rm -fr "$TRASH_DIRECTORY" || {
 630        GIT_EXIT_OK=t
 631        echo >&5 "FATAL: Cannot prepare test area"
 632        exit 1
 633}
 634
 635HOME="$TRASH_DIRECTORY"
 636export HOME
 637
 638if test -z "$TEST_NO_CREATE_REPO"
 639then
 640        test_create_repo "$TRASH_DIRECTORY"
 641else
 642        mkdir -p "$TRASH_DIRECTORY"
 643fi
 644# Use -P to resolve symlinks in our working directory so that the cwd
 645# in subprocesses like git equals our $PWD (for pathname comparisons).
 646cd -P "$TRASH_DIRECTORY" || exit 1
 647
 648this_test=${0##*/}
 649this_test=${this_test%%-*}
 650if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 651then
 652        say_color info >&3 "skipping test $this_test altogether"
 653        skip_all="skip all tests in $this_test"
 654        test_done
 655fi
 656
 657# Provide an implementation of the 'yes' utility
 658yes () {
 659        if test $# = 0
 660        then
 661                y=y
 662        else
 663                y="$*"
 664        fi
 665
 666        while echo "$y"
 667        do
 668                :
 669        done
 670}
 671
 672# Fix some commands on Windows
 673case $(uname -s) in
 674*MINGW*)
 675        # Windows has its own (incompatible) sort and find
 676        sort () {
 677                /usr/bin/sort "$@"
 678        }
 679        find () {
 680                /usr/bin/find "$@"
 681        }
 682        sum () {
 683                md5sum "$@"
 684        }
 685        # git sees Windows-style pwd
 686        pwd () {
 687                builtin pwd -W
 688        }
 689        # no POSIX permissions
 690        # backslashes in pathspec are converted to '/'
 691        # exec does not inherit the PID
 692        test_set_prereq MINGW
 693        test_set_prereq NOT_CYGWIN
 694        test_set_prereq SED_STRIPS_CR
 695        ;;
 696*CYGWIN*)
 697        test_set_prereq POSIXPERM
 698        test_set_prereq EXECKEEPSPID
 699        test_set_prereq NOT_MINGW
 700        test_set_prereq CYGWIN
 701        test_set_prereq SED_STRIPS_CR
 702        ;;
 703*)
 704        test_set_prereq POSIXPERM
 705        test_set_prereq BSLASHPSPEC
 706        test_set_prereq EXECKEEPSPID
 707        test_set_prereq NOT_MINGW
 708        test_set_prereq NOT_CYGWIN
 709        ;;
 710esac
 711
 712( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 713test -z "$NO_PERL" && test_set_prereq PERL
 714test -z "$NO_PYTHON" && test_set_prereq PYTHON
 715test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 716test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 717
 718# Can we rely on git's output in the C locale?
 719if test -n "$GETTEXT_POISON"
 720then
 721        GIT_GETTEXT_POISON=YesPlease
 722        export GIT_GETTEXT_POISON
 723        test_set_prereq GETTEXT_POISON
 724else
 725        test_set_prereq C_LOCALE_OUTPUT
 726fi
 727
 728# Use this instead of test_cmp to compare files that contain expected and
 729# actual output from git commands that can be translated.  When running
 730# under GETTEXT_POISON this pretends that the command produced expected
 731# results.
 732test_i18ncmp () {
 733        test -n "$GETTEXT_POISON" || test_cmp "$@"
 734}
 735
 736# Use this instead of "grep expected-string actual" to see if the
 737# output from a git command that can be translated either contains an
 738# expected string, or does not contain an unwanted one.  When running
 739# under GETTEXT_POISON this pretends that the command produced expected
 740# results.
 741test_i18ngrep () {
 742        if test -n "$GETTEXT_POISON"
 743        then
 744            : # pretend success
 745        elif test "x!" = "x$1"
 746        then
 747                shift
 748                ! grep "$@"
 749        else
 750                grep "$@"
 751        fi
 752}
 753
 754test_lazy_prereq PIPE '
 755        # test whether the filesystem supports FIFOs
 756        rm -f testfifo && mkfifo testfifo
 757'
 758
 759test_lazy_prereq SYMLINKS '
 760        # test whether the filesystem supports symbolic links
 761        ln -s x y && test -h y
 762'
 763
 764test_lazy_prereq CASE_INSENSITIVE_FS '
 765        echo good >CamelCase &&
 766        echo bad >camelcase &&
 767        test "$(cat CamelCase)" != good
 768'
 769
 770test_lazy_prereq UTF8_NFD_TO_NFC '
 771        # check whether FS converts nfd unicode to nfc
 772        auml=$(printf "\303\244")
 773        aumlcdiar=$(printf "\141\314\210")
 774        >"$auml" &&
 775        case "$(echo *)" in
 776        "$aumlcdiar")
 777                true ;;
 778        *)
 779                false ;;
 780        esac
 781'
 782
 783test_lazy_prereq AUTOIDENT '
 784        sane_unset GIT_AUTHOR_NAME &&
 785        sane_unset GIT_AUTHOR_EMAIL &&
 786        git var GIT_AUTHOR_IDENT
 787'
 788
 789# When the tests are run as root, permission tests will report that
 790# things are writable when they shouldn't be.
 791test -w / || test_set_prereq SANITY
 792
 793GIT_UNZIP=${GIT_UNZIP:-unzip}
 794test_lazy_prereq UNZIP '
 795        "$GIT_UNZIP" -v
 796        test $? -ne 127
 797'