t / test-lib.shon commit Merge branch 'jc/fetch-pull-refmap' (a668853)
   1# Test framework for git.  See t/README for usage.
   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=$(pwd)
  29else
  30        # ensure that TEST_DIRECTORY is an absolute path so that it
  31        # is valid even if the current working directory is changed
  32        TEST_DIRECTORY=$(cd "$TEST_DIRECTORY" && pwd) || exit 1
  33fi
  34if test -z "$TEST_OUTPUT_DIRECTORY"
  35then
  36        # Similarly, override this to store the test-results subdir
  37        # elsewhere
  38        TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  39fi
  40GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  41
  42################################################################
  43# It appears that people try to run tests without building...
  44"$GIT_BUILD_DIR/git" >/dev/null
  45if test $? != 1
  46then
  47        echo >&2 'error: you do not seem to have built git yet.'
  48        exit 1
  49fi
  50
  51. "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  52export PERL_PATH SHELL_PATH
  53
  54# if --tee was passed, write the output not only to the terminal, but
  55# additionally to the file test-results/$BASENAME.out, too.
  56case "$GIT_TEST_TEE_STARTED, $* " in
  57done,*)
  58        # do not redirect again
  59        ;;
  60*' --tee '*|*' --va'*)
  61        mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
  62        BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
  63        (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  64         echo $? > $BASE.exit) | tee $BASE.out
  65        test "$(cat $BASE.exit)" = 0
  66        exit
  67        ;;
  68esac
  69
  70# For repeatability, reset the environment to known value.
  71LANG=C
  72LC_ALL=C
  73PAGER=cat
  74TZ=UTC
  75TERM=dumb
  76export LANG LC_ALL PAGER TERM TZ
  77EDITOR=:
  78# A call to "unset" with no arguments causes at least Solaris 10
  79# /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
  80# deriving from the command substitution clustered with the other
  81# ones.
  82unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  83        my @env = keys %ENV;
  84        my $ok = join("|", qw(
  85                TRACE
  86                DEBUG
  87                USE_LOOKUP
  88                TEST
  89                .*_TEST
  90                PROVE
  91                VALGRIND
  92                UNZIP
  93                PERF_
  94                CURL_VERBOSE
  95        ));
  96        my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  97        print join("\n", @vars);
  98')
  99unset XDG_CONFIG_HOME
 100unset GITPERLLIB
 101GIT_AUTHOR_EMAIL=author@example.com
 102GIT_AUTHOR_NAME='A U Thor'
 103GIT_COMMITTER_EMAIL=committer@example.com
 104GIT_COMMITTER_NAME='C O Mitter'
 105GIT_MERGE_VERBOSITY=5
 106GIT_MERGE_AUTOEDIT=no
 107export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 108export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 109export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 110export EDITOR
 111
 112if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 113then
 114        GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 115        export GIT_INDEX_VERSION
 116fi
 117
 118# Add libc MALLOC and MALLOC_PERTURB test
 119# only if we are not executing the test with valgrind
 120if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 121   test -n "$TEST_NO_MALLOC_CHECK"
 122then
 123        setup_malloc_check () {
 124                : nothing
 125        }
 126        teardown_malloc_check () {
 127                : nothing
 128        }
 129else
 130        setup_malloc_check () {
 131                MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 132                export MALLOC_CHECK_ MALLOC_PERTURB_
 133        }
 134        teardown_malloc_check () {
 135                unset MALLOC_CHECK_ MALLOC_PERTURB_
 136        }
 137fi
 138
 139# Protect ourselves from common misconfiguration to export
 140# CDPATH into the environment
 141unset CDPATH
 142
 143unset GREP_OPTIONS
 144unset UNZIP
 145
 146case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 1471|2|true)
 148        echo "* warning: Some tests will not work if GIT_TRACE" \
 149                "is set as to trace on STDERR ! *"
 150        echo "* warning: Please set GIT_TRACE to something" \
 151                "other than 1, 2 or true ! *"
 152        ;;
 153esac
 154
 155# Convenience
 156#
 157# A regexp to match 5 and 40 hexdigits
 158_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 159_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 160
 161# Zero SHA-1
 162_z40=0000000000000000000000000000000000000000
 163
 164# Line feed
 165LF='
 166'
 167
 168export _x05 _x40 _z40 LF
 169
 170# Each test should start with something like this, after copyright notices:
 171#
 172# test_description='Description of this test...
 173# This test checks if command xyzzy does the right thing...
 174# '
 175# . ./test-lib.sh
 176[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 177                TERM=$ORIGINAL_TERM &&
 178                export TERM &&
 179                [ -t 1 ] &&
 180                tput bold >/dev/null 2>&1 &&
 181                tput setaf 1 >/dev/null 2>&1 &&
 182                tput sgr0 >/dev/null 2>&1
 183        ) &&
 184        color=t
 185
 186while test "$#" -ne 0
 187do
 188        case "$1" in
 189        -d|--d|--de|--deb|--debu|--debug)
 190                debug=t; shift ;;
 191        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 192                immediate=t; shift ;;
 193        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 194                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 195        -r)
 196                shift; test "$#" -ne 0 || {
 197                        echo 'error: -r requires an argument' >&2;
 198                        exit 1;
 199                }
 200                run_list=$1; shift ;;
 201        --run=*)
 202                run_list=$(expr "z$1" : 'z[^=]*=\(.*\)'); shift ;;
 203        -h|--h|--he|--hel|--help)
 204                help=t; shift ;;
 205        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 206                verbose=t; shift ;;
 207        --verbose-only=*)
 208                verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 209                shift ;;
 210        -q|--q|--qu|--qui|--quie|--quiet)
 211                # Ignore --quiet under a TAP::Harness. Saying how many tests
 212                # passed without the ok/not ok details is always an error.
 213                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 214        --with-dashes)
 215                with_dashes=t; shift ;;
 216        --no-color)
 217                color=; shift ;;
 218        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 219                valgrind=memcheck
 220                shift ;;
 221        --valgrind=*)
 222                valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 223                shift ;;
 224        --valgrind-only=*)
 225                valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 226                shift ;;
 227        --tee)
 228                shift ;; # was handled already
 229        --root=*)
 230                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 231                shift ;;
 232        *)
 233                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 234        esac
 235done
 236
 237if test -n "$valgrind_only"
 238then
 239        test -z "$valgrind" && valgrind=memcheck
 240        test -z "$verbose" && verbose_only="$valgrind_only"
 241elif test -n "$valgrind"
 242then
 243        verbose=t
 244fi
 245
 246if test -n "$color"
 247then
 248        say_color () {
 249                (
 250                TERM=$ORIGINAL_TERM
 251                export TERM
 252                case "$1" in
 253                error)
 254                        tput bold; tput setaf 1;; # bold red
 255                skip)
 256                        tput setaf 4;; # blue
 257                warn)
 258                        tput setaf 3;; # brown/yellow
 259                pass)
 260                        tput setaf 2;; # green
 261                info)
 262                        tput setaf 6;; # cyan
 263                *)
 264                        test -n "$quiet" && return;;
 265                esac
 266                shift
 267                printf "%s" "$*"
 268                tput sgr0
 269                echo
 270                )
 271        }
 272else
 273        say_color() {
 274                test -z "$1" && test -n "$quiet" && return
 275                shift
 276                printf "%s\n" "$*"
 277        }
 278fi
 279
 280error () {
 281        say_color error "error: $*"
 282        GIT_EXIT_OK=t
 283        exit 1
 284}
 285
 286say () {
 287        say_color info "$*"
 288}
 289
 290test "${test_description}" != "" ||
 291error "Test script did not set test_description."
 292
 293if test "$help" = "t"
 294then
 295        printf '%s\n' "$test_description"
 296        exit 0
 297fi
 298
 299exec 5>&1
 300exec 6<&0
 301if test "$verbose" = "t"
 302then
 303        exec 4>&2 3>&1
 304else
 305        exec 4>/dev/null 3>/dev/null
 306fi
 307
 308test_failure=0
 309test_count=0
 310test_fixed=0
 311test_broken=0
 312test_success=0
 313
 314test_external_has_tap=0
 315
 316die () {
 317        code=$?
 318        if test -n "$GIT_EXIT_OK"
 319        then
 320                exit $code
 321        else
 322                echo >&5 "FATAL: Unexpected exit with code $code"
 323                exit 1
 324        fi
 325}
 326
 327GIT_EXIT_OK=
 328trap 'die' EXIT
 329
 330# The user-facing functions are loaded from a separate file so that
 331# test_perf subshells can have them too
 332. "$TEST_DIRECTORY/test-lib-functions.sh"
 333
 334# You are not expected to call test_ok_ and test_failure_ directly, use
 335# the test_expect_* functions instead.
 336
 337test_ok_ () {
 338        test_success=$(($test_success + 1))
 339        say_color "" "ok $test_count - $@"
 340}
 341
 342test_failure_ () {
 343        test_failure=$(($test_failure + 1))
 344        say_color error "not ok $test_count - $1"
 345        shift
 346        printf '%s\n' "$*" | sed -e 's/^/#      /'
 347        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 348}
 349
 350test_known_broken_ok_ () {
 351        test_fixed=$(($test_fixed+1))
 352        say_color error "ok $test_count - $@ # TODO known breakage vanished"
 353}
 354
 355test_known_broken_failure_ () {
 356        test_broken=$(($test_broken+1))
 357        say_color warn "not ok $test_count - $@ # TODO known breakage"
 358}
 359
 360test_debug () {
 361        test "$debug" = "" || eval "$1"
 362}
 363
 364match_pattern_list () {
 365        arg="$1"
 366        shift
 367        test -z "$*" && return 1
 368        for pattern_
 369        do
 370                case "$arg" in
 371                $pattern_)
 372                        return 0
 373                esac
 374        done
 375        return 1
 376}
 377
 378match_test_selector_list () {
 379        title="$1"
 380        shift
 381        arg="$1"
 382        shift
 383        test -z "$1" && return 0
 384
 385        # Both commas and whitespace are accepted as separators.
 386        OLDIFS=$IFS
 387        IFS='   ,'
 388        set -- $1
 389        IFS=$OLDIFS
 390
 391        # If the first selector is negative we include by default.
 392        include=
 393        case "$1" in
 394                !*) include=t ;;
 395        esac
 396
 397        for selector
 398        do
 399                orig_selector=$selector
 400
 401                positive=t
 402                case "$selector" in
 403                        !*)
 404                                positive=
 405                                selector=${selector##?}
 406                                ;;
 407                esac
 408
 409                test -z "$selector" && continue
 410
 411                case "$selector" in
 412                        *-*)
 413                                if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 414                                then
 415                                        echo "error: $title: invalid non-numeric in range" \
 416                                                "start: '$orig_selector'" >&2
 417                                        exit 1
 418                                fi
 419                                if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 420                                then
 421                                        echo "error: $title: invalid non-numeric in range" \
 422                                                "end: '$orig_selector'" >&2
 423                                        exit 1
 424                                fi
 425                                ;;
 426                        *)
 427                                if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 428                                then
 429                                        echo "error: $title: invalid non-numeric in test" \
 430                                                "selector: '$orig_selector'" >&2
 431                                        exit 1
 432                                fi
 433                esac
 434
 435                # Short cut for "obvious" cases
 436                test -z "$include" && test -z "$positive" && continue
 437                test -n "$include" && test -n "$positive" && continue
 438
 439                case "$selector" in
 440                        -*)
 441                                if test $arg -le ${selector#-}
 442                                then
 443                                        include=$positive
 444                                fi
 445                                ;;
 446                        *-)
 447                                if test $arg -ge ${selector%-}
 448                                then
 449                                        include=$positive
 450                                fi
 451                                ;;
 452                        *-*)
 453                                if test ${selector%%-*} -le $arg \
 454                                        && test $arg -le ${selector#*-}
 455                                then
 456                                        include=$positive
 457                                fi
 458                                ;;
 459                        *)
 460                                if test $arg -eq $selector
 461                                then
 462                                        include=$positive
 463                                fi
 464                                ;;
 465                esac
 466        done
 467
 468        test -n "$include"
 469}
 470
 471maybe_teardown_verbose () {
 472        test -z "$verbose_only" && return
 473        exec 4>/dev/null 3>/dev/null
 474        verbose=
 475}
 476
 477last_verbose=t
 478maybe_setup_verbose () {
 479        test -z "$verbose_only" && return
 480        if match_pattern_list $test_count $verbose_only
 481        then
 482                exec 4>&2 3>&1
 483                # Emit a delimiting blank line when going from
 484                # non-verbose to verbose.  Within verbose mode the
 485                # delimiter is printed by test_expect_*.  The choice
 486                # of the initial $last_verbose is such that before
 487                # test 1, we do not print it.
 488                test -z "$last_verbose" && echo >&3 ""
 489                verbose=t
 490        else
 491                exec 4>/dev/null 3>/dev/null
 492                verbose=
 493        fi
 494        last_verbose=$verbose
 495}
 496
 497maybe_teardown_valgrind () {
 498        test -z "$GIT_VALGRIND" && return
 499        GIT_VALGRIND_ENABLED=
 500}
 501
 502maybe_setup_valgrind () {
 503        test -z "$GIT_VALGRIND" && return
 504        if test -z "$valgrind_only"
 505        then
 506                GIT_VALGRIND_ENABLED=t
 507                return
 508        fi
 509        GIT_VALGRIND_ENABLED=
 510        if match_pattern_list $test_count $valgrind_only
 511        then
 512                GIT_VALGRIND_ENABLED=t
 513        fi
 514}
 515
 516test_eval_ () {
 517        # This is a separate function because some tests use
 518        # "return" to end a test_expect_success block early.
 519        eval </dev/null >&3 2>&4 "$*"
 520}
 521
 522test_run_ () {
 523        test_cleanup=:
 524        expecting_failure=$2
 525        setup_malloc_check
 526        test_eval_ "$1"
 527        eval_ret=$?
 528        teardown_malloc_check
 529
 530        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 531        then
 532                setup_malloc_check
 533                test_eval_ "$test_cleanup"
 534                teardown_malloc_check
 535        fi
 536        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 537        then
 538                echo ""
 539        fi
 540        return "$eval_ret"
 541}
 542
 543test_start_ () {
 544        test_count=$(($test_count+1))
 545        maybe_setup_verbose
 546        maybe_setup_valgrind
 547}
 548
 549test_finish_ () {
 550        echo >&3 ""
 551        maybe_teardown_valgrind
 552        maybe_teardown_verbose
 553}
 554
 555test_skip () {
 556        to_skip=
 557        skipped_reason=
 558        if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 559        then
 560                to_skip=t
 561                skipped_reason="GIT_SKIP_TESTS"
 562        fi
 563        if test -z "$to_skip" && test -n "$test_prereq" &&
 564           ! test_have_prereq "$test_prereq"
 565        then
 566                to_skip=t
 567
 568                of_prereq=
 569                if test "$missing_prereq" != "$test_prereq"
 570                then
 571                        of_prereq=" of $test_prereq"
 572                fi
 573                skipped_reason="missing $missing_prereq${of_prereq}"
 574        fi
 575        if test -z "$to_skip" && test -n "$run_list" &&
 576                ! match_test_selector_list '--run' $test_count "$run_list"
 577        then
 578                to_skip=t
 579                skipped_reason="--run"
 580        fi
 581
 582        case "$to_skip" in
 583        t)
 584                say_color skip >&3 "skipping test: $@"
 585                say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 586                : true
 587                ;;
 588        *)
 589                false
 590                ;;
 591        esac
 592}
 593
 594# stub; perf-lib overrides it
 595test_at_end_hook_ () {
 596        :
 597}
 598
 599test_done () {
 600        GIT_EXIT_OK=t
 601
 602        if test -z "$HARNESS_ACTIVE"
 603        then
 604                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 605                mkdir -p "$test_results_dir"
 606                base=${0##*/}
 607                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 608
 609                cat >>"$test_results_path" <<-EOF
 610                total $test_count
 611                success $test_success
 612                fixed $test_fixed
 613                broken $test_broken
 614                failed $test_failure
 615
 616                EOF
 617        fi
 618
 619        if test "$test_fixed" != 0
 620        then
 621                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 622        fi
 623        if test "$test_broken" != 0
 624        then
 625                say_color warn "# still have $test_broken known breakage(s)"
 626        fi
 627        if test "$test_broken" != 0 || test "$test_fixed" != 0
 628        then
 629                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 630                msg="remaining $test_remaining test(s)"
 631        else
 632                test_remaining=$test_count
 633                msg="$test_count test(s)"
 634        fi
 635        case "$test_failure" in
 636        0)
 637                # Maybe print SKIP message
 638                if test -n "$skip_all" && test $test_count -gt 0
 639                then
 640                        error "Can't use skip_all after running some tests"
 641                fi
 642                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 643
 644                if test $test_external_has_tap -eq 0
 645                then
 646                        if test $test_remaining -gt 0
 647                        then
 648                                say_color pass "# passed all $msg"
 649                        fi
 650                        say "1..$test_count$skip_all"
 651                fi
 652
 653                test -d "$remove_trash" &&
 654                cd "$(dirname "$remove_trash")" &&
 655                rm -rf "$(basename "$remove_trash")"
 656
 657                test_at_end_hook_
 658
 659                exit 0 ;;
 660
 661        *)
 662                if test $test_external_has_tap -eq 0
 663                then
 664                        say_color error "# failed $test_failure among $msg"
 665                        say "1..$test_count"
 666                fi
 667
 668                exit 1 ;;
 669
 670        esac
 671}
 672
 673if test -n "$valgrind"
 674then
 675        make_symlink () {
 676                test -h "$2" &&
 677                test "$1" = "$(readlink "$2")" || {
 678                        # be super paranoid
 679                        if mkdir "$2".lock
 680                        then
 681                                rm -f "$2" &&
 682                                ln -s "$1" "$2" &&
 683                                rm -r "$2".lock
 684                        else
 685                                while test -d "$2".lock
 686                                do
 687                                        say "Waiting for lock on $2."
 688                                        sleep 1
 689                                done
 690                        fi
 691                }
 692        }
 693
 694        make_valgrind_symlink () {
 695                # handle only executables, unless they are shell libraries that
 696                # need to be in the exec-path.
 697                test -x "$1" ||
 698                test "# " = "$(head -c 2 <"$1")" ||
 699                return;
 700
 701                base=$(basename "$1")
 702                symlink_target=$GIT_BUILD_DIR/$base
 703                # do not override scripts
 704                if test -x "$symlink_target" &&
 705                    test ! -d "$symlink_target" &&
 706                    test "#!" != "$(head -c 2 < "$symlink_target")"
 707                then
 708                        symlink_target=../valgrind.sh
 709                fi
 710                case "$base" in
 711                *.sh|*.perl)
 712                        symlink_target=../unprocessed-script
 713                esac
 714                # create the link, or replace it if it is out of date
 715                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 716        }
 717
 718        # override all git executables in TEST_DIRECTORY/..
 719        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 720        mkdir -p "$GIT_VALGRIND"/bin
 721        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 722        do
 723                make_valgrind_symlink $file
 724        done
 725        # special-case the mergetools loadables
 726        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 727        OLDIFS=$IFS
 728        IFS=:
 729        for path in $PATH
 730        do
 731                ls "$path"/git-* 2> /dev/null |
 732                while read file
 733                do
 734                        make_valgrind_symlink "$file"
 735                done
 736        done
 737        IFS=$OLDIFS
 738        PATH=$GIT_VALGRIND/bin:$PATH
 739        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 740        export GIT_VALGRIND
 741        GIT_VALGRIND_MODE="$valgrind"
 742        export GIT_VALGRIND_MODE
 743        GIT_VALGRIND_ENABLED=t
 744        test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 745        export GIT_VALGRIND_ENABLED
 746elif test -n "$GIT_TEST_INSTALLED"
 747then
 748        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 749        error "Cannot run git from $GIT_TEST_INSTALLED."
 750        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 751        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 752else # normal case, use ../bin-wrappers only unless $with_dashes:
 753        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 754        if ! test -x "$git_bin_dir/git"
 755        then
 756                if test -z "$with_dashes"
 757                then
 758                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 759                fi
 760                with_dashes=t
 761        fi
 762        PATH="$git_bin_dir:$PATH"
 763        GIT_EXEC_PATH=$GIT_BUILD_DIR
 764        if test -n "$with_dashes"
 765        then
 766                PATH="$GIT_BUILD_DIR:$PATH"
 767        fi
 768fi
 769GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 770GIT_CONFIG_NOSYSTEM=1
 771GIT_ATTR_NOSYSTEM=1
 772export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 773
 774if test -z "$GIT_TEST_CMP"
 775then
 776        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 777        then
 778                GIT_TEST_CMP="$DIFF -c"
 779        else
 780                GIT_TEST_CMP="$DIFF -u"
 781        fi
 782fi
 783
 784GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 785export GITPERLLIB
 786test -d "$GIT_BUILD_DIR"/templates/blt || {
 787        error "You haven't built things yet, have you?"
 788}
 789
 790if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 791then
 792        echo >&2 'You need to build test-chmtime:'
 793        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 794        exit 1
 795fi
 796
 797# Test repository
 798TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 799test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 800case "$TRASH_DIRECTORY" in
 801/*) ;; # absolute path is good
 802 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 803esac
 804test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 805rm -fr "$TRASH_DIRECTORY" || {
 806        GIT_EXIT_OK=t
 807        echo >&5 "FATAL: Cannot prepare test area"
 808        exit 1
 809}
 810
 811HOME="$TRASH_DIRECTORY"
 812export HOME
 813
 814if test -z "$TEST_NO_CREATE_REPO"
 815then
 816        test_create_repo "$TRASH_DIRECTORY"
 817else
 818        mkdir -p "$TRASH_DIRECTORY"
 819fi
 820# Use -P to resolve symlinks in our working directory so that the cwd
 821# in subprocesses like git equals our $PWD (for pathname comparisons).
 822cd -P "$TRASH_DIRECTORY" || exit 1
 823
 824this_test=${0##*/}
 825this_test=${this_test%%-*}
 826if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 827then
 828        say_color info >&3 "skipping test $this_test altogether"
 829        skip_all="skip all tests in $this_test"
 830        test_done
 831fi
 832
 833# Provide an implementation of the 'yes' utility
 834yes () {
 835        if test $# = 0
 836        then
 837                y=y
 838        else
 839                y="$*"
 840        fi
 841
 842        while echo "$y"
 843        do
 844                :
 845        done
 846}
 847
 848# Fix some commands on Windows
 849case $(uname -s) in
 850*MINGW*)
 851        # Windows has its own (incompatible) sort and find
 852        sort () {
 853                /usr/bin/sort "$@"
 854        }
 855        find () {
 856                /usr/bin/find "$@"
 857        }
 858        sum () {
 859                md5sum "$@"
 860        }
 861        # git sees Windows-style pwd
 862        pwd () {
 863                builtin pwd -W
 864        }
 865        # no POSIX permissions
 866        # backslashes in pathspec are converted to '/'
 867        # exec does not inherit the PID
 868        test_set_prereq MINGW
 869        test_set_prereq NOT_CYGWIN
 870        test_set_prereq SED_STRIPS_CR
 871        test_set_prereq GREP_STRIPS_CR
 872        GIT_TEST_CMP=mingw_test_cmp
 873        ;;
 874*CYGWIN*)
 875        test_set_prereq POSIXPERM
 876        test_set_prereq EXECKEEPSPID
 877        test_set_prereq NOT_MINGW
 878        test_set_prereq CYGWIN
 879        test_set_prereq SED_STRIPS_CR
 880        test_set_prereq GREP_STRIPS_CR
 881        ;;
 882*)
 883        test_set_prereq POSIXPERM
 884        test_set_prereq BSLASHPSPEC
 885        test_set_prereq EXECKEEPSPID
 886        test_set_prereq NOT_MINGW
 887        test_set_prereq NOT_CYGWIN
 888        ;;
 889esac
 890
 891( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 892test -z "$NO_PERL" && test_set_prereq PERL
 893test -z "$NO_PYTHON" && test_set_prereq PYTHON
 894test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 895test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 896
 897# Can we rely on git's output in the C locale?
 898if test -n "$GETTEXT_POISON"
 899then
 900        GIT_GETTEXT_POISON=YesPlease
 901        export GIT_GETTEXT_POISON
 902        test_set_prereq GETTEXT_POISON
 903else
 904        test_set_prereq C_LOCALE_OUTPUT
 905fi
 906
 907# Use this instead of test_cmp to compare files that contain expected and
 908# actual output from git commands that can be translated.  When running
 909# under GETTEXT_POISON this pretends that the command produced expected
 910# results.
 911test_i18ncmp () {
 912        test -n "$GETTEXT_POISON" || test_cmp "$@"
 913}
 914
 915# Use this instead of "grep expected-string actual" to see if the
 916# output from a git command that can be translated either contains an
 917# expected string, or does not contain an unwanted one.  When running
 918# under GETTEXT_POISON this pretends that the command produced expected
 919# results.
 920test_i18ngrep () {
 921        if test -n "$GETTEXT_POISON"
 922        then
 923            : # pretend success
 924        elif test "x!" = "x$1"
 925        then
 926                shift
 927                ! grep "$@"
 928        else
 929                grep "$@"
 930        fi
 931}
 932
 933test_lazy_prereq PIPE '
 934        # test whether the filesystem supports FIFOs
 935        case $(uname -s) in
 936        CYGWIN*)
 937                false
 938                ;;
 939        *)
 940                rm -f testfifo && mkfifo testfifo
 941                ;;
 942        esac
 943'
 944
 945test_lazy_prereq SYMLINKS '
 946        # test whether the filesystem supports symbolic links
 947        ln -s x y && test -h y
 948'
 949
 950test_lazy_prereq FILEMODE '
 951        test "$(git config --bool core.filemode)" = true
 952'
 953
 954test_lazy_prereq CASE_INSENSITIVE_FS '
 955        echo good >CamelCase &&
 956        echo bad >camelcase &&
 957        test "$(cat CamelCase)" != good
 958'
 959
 960test_lazy_prereq UTF8_NFD_TO_NFC '
 961        # check whether FS converts nfd unicode to nfc
 962        auml=$(printf "\303\244")
 963        aumlcdiar=$(printf "\141\314\210")
 964        >"$auml" &&
 965        case "$(echo *)" in
 966        "$aumlcdiar")
 967                true ;;
 968        *)
 969                false ;;
 970        esac
 971'
 972
 973test_lazy_prereq AUTOIDENT '
 974        sane_unset GIT_AUTHOR_NAME &&
 975        sane_unset GIT_AUTHOR_EMAIL &&
 976        git var GIT_AUTHOR_IDENT
 977'
 978
 979# When the tests are run as root, permission tests will report that
 980# things are writable when they shouldn't be.
 981test -w / || test_set_prereq SANITY
 982
 983GIT_UNZIP=${GIT_UNZIP:-unzip}
 984test_lazy_prereq UNZIP '
 985        "$GIT_UNZIP" -v
 986        test $? -ne 127
 987'