t / test-lib.shon commit Merge branch 'jk/write-packed-refs-via-stdio' (69a5bbb)
   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
 112# Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 113GIT_TRACE_BARE=1
 114export GIT_TRACE_BARE
 115
 116if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 117then
 118        GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 119        export GIT_INDEX_VERSION
 120fi
 121
 122# Add libc MALLOC and MALLOC_PERTURB test
 123# only if we are not executing the test with valgrind
 124if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 125   test -n "$TEST_NO_MALLOC_CHECK"
 126then
 127        setup_malloc_check () {
 128                : nothing
 129        }
 130        teardown_malloc_check () {
 131                : nothing
 132        }
 133else
 134        setup_malloc_check () {
 135                MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 136                export MALLOC_CHECK_ MALLOC_PERTURB_
 137        }
 138        teardown_malloc_check () {
 139                unset MALLOC_CHECK_ MALLOC_PERTURB_
 140        }
 141fi
 142
 143# Protect ourselves from common misconfiguration to export
 144# CDPATH into the environment
 145unset CDPATH
 146
 147unset GREP_OPTIONS
 148unset UNZIP
 149
 150case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 1511|2|true)
 152        echo "* warning: Some tests will not work if GIT_TRACE" \
 153                "is set as to trace on STDERR ! *"
 154        echo "* warning: Please set GIT_TRACE to something" \
 155                "other than 1, 2 or true ! *"
 156        ;;
 157esac
 158
 159# Convenience
 160#
 161# A regexp to match 5 and 40 hexdigits
 162_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 163_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 164
 165# Zero SHA-1
 166_z40=0000000000000000000000000000000000000000
 167
 168# Line feed
 169LF='
 170'
 171
 172export _x05 _x40 _z40 LF
 173
 174# Each test should start with something like this, after copyright notices:
 175#
 176# test_description='Description of this test...
 177# This test checks if command xyzzy does the right thing...
 178# '
 179# . ./test-lib.sh
 180[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 181                TERM=$ORIGINAL_TERM &&
 182                export TERM &&
 183                [ -t 1 ] &&
 184                tput bold >/dev/null 2>&1 &&
 185                tput setaf 1 >/dev/null 2>&1 &&
 186                tput sgr0 >/dev/null 2>&1
 187        ) &&
 188        color=t
 189
 190while test "$#" -ne 0
 191do
 192        case "$1" in
 193        -d|--d|--de|--deb|--debu|--debug)
 194                debug=t; shift ;;
 195        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 196                immediate=t; shift ;;
 197        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 198                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 199        -r)
 200                shift; test "$#" -ne 0 || {
 201                        echo 'error: -r requires an argument' >&2;
 202                        exit 1;
 203                }
 204                run_list=$1; shift ;;
 205        --run=*)
 206                run_list=$(expr "z$1" : 'z[^=]*=\(.*\)'); shift ;;
 207        -h|--h|--he|--hel|--help)
 208                help=t; shift ;;
 209        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 210                verbose=t; shift ;;
 211        --verbose-only=*)
 212                verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 213                shift ;;
 214        -q|--q|--qu|--qui|--quie|--quiet)
 215                # Ignore --quiet under a TAP::Harness. Saying how many tests
 216                # passed without the ok/not ok details is always an error.
 217                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 218        --with-dashes)
 219                with_dashes=t; shift ;;
 220        --no-color)
 221                color=; shift ;;
 222        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 223                valgrind=memcheck
 224                shift ;;
 225        --valgrind=*)
 226                valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 227                shift ;;
 228        --valgrind-only=*)
 229                valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 230                shift ;;
 231        --tee)
 232                shift ;; # was handled already
 233        --root=*)
 234                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 235                shift ;;
 236        *)
 237                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 238        esac
 239done
 240
 241if test -n "$valgrind_only"
 242then
 243        test -z "$valgrind" && valgrind=memcheck
 244        test -z "$verbose" && verbose_only="$valgrind_only"
 245elif test -n "$valgrind"
 246then
 247        verbose=t
 248fi
 249
 250if test -n "$color"
 251then
 252        say_color () {
 253                (
 254                TERM=$ORIGINAL_TERM
 255                export TERM
 256                case "$1" in
 257                error)
 258                        tput bold; tput setaf 1;; # bold red
 259                skip)
 260                        tput setaf 4;; # blue
 261                warn)
 262                        tput setaf 3;; # brown/yellow
 263                pass)
 264                        tput setaf 2;; # green
 265                info)
 266                        tput setaf 6;; # cyan
 267                *)
 268                        test -n "$quiet" && return;;
 269                esac
 270                shift
 271                printf "%s" "$*"
 272                tput sgr0
 273                echo
 274                )
 275        }
 276else
 277        say_color() {
 278                test -z "$1" && test -n "$quiet" && return
 279                shift
 280                printf "%s\n" "$*"
 281        }
 282fi
 283
 284error () {
 285        say_color error "error: $*"
 286        GIT_EXIT_OK=t
 287        exit 1
 288}
 289
 290say () {
 291        say_color info "$*"
 292}
 293
 294test "${test_description}" != "" ||
 295error "Test script did not set test_description."
 296
 297if test "$help" = "t"
 298then
 299        printf '%s\n' "$test_description"
 300        exit 0
 301fi
 302
 303exec 5>&1
 304exec 6<&0
 305if test "$verbose" = "t"
 306then
 307        exec 4>&2 3>&1
 308else
 309        exec 4>/dev/null 3>/dev/null
 310fi
 311
 312test_failure=0
 313test_count=0
 314test_fixed=0
 315test_broken=0
 316test_success=0
 317
 318test_external_has_tap=0
 319
 320die () {
 321        code=$?
 322        if test -n "$GIT_EXIT_OK"
 323        then
 324                exit $code
 325        else
 326                echo >&5 "FATAL: Unexpected exit with code $code"
 327                exit 1
 328        fi
 329}
 330
 331GIT_EXIT_OK=
 332trap 'die' EXIT
 333
 334# The user-facing functions are loaded from a separate file so that
 335# test_perf subshells can have them too
 336. "$TEST_DIRECTORY/test-lib-functions.sh"
 337
 338# You are not expected to call test_ok_ and test_failure_ directly, use
 339# the test_expect_* functions instead.
 340
 341test_ok_ () {
 342        test_success=$(($test_success + 1))
 343        say_color "" "ok $test_count - $@"
 344}
 345
 346test_failure_ () {
 347        test_failure=$(($test_failure + 1))
 348        say_color error "not ok $test_count - $1"
 349        shift
 350        printf '%s\n' "$*" | sed -e 's/^/#      /'
 351        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 352}
 353
 354test_known_broken_ok_ () {
 355        test_fixed=$(($test_fixed+1))
 356        say_color error "ok $test_count - $@ # TODO known breakage vanished"
 357}
 358
 359test_known_broken_failure_ () {
 360        test_broken=$(($test_broken+1))
 361        say_color warn "not ok $test_count - $@ # TODO known breakage"
 362}
 363
 364test_debug () {
 365        test "$debug" = "" || eval "$1"
 366}
 367
 368match_pattern_list () {
 369        arg="$1"
 370        shift
 371        test -z "$*" && return 1
 372        for pattern_
 373        do
 374                case "$arg" in
 375                $pattern_)
 376                        return 0
 377                esac
 378        done
 379        return 1
 380}
 381
 382match_test_selector_list () {
 383        title="$1"
 384        shift
 385        arg="$1"
 386        shift
 387        test -z "$1" && return 0
 388
 389        # Both commas and whitespace are accepted as separators.
 390        OLDIFS=$IFS
 391        IFS='   ,'
 392        set -- $1
 393        IFS=$OLDIFS
 394
 395        # If the first selector is negative we include by default.
 396        include=
 397        case "$1" in
 398                !*) include=t ;;
 399        esac
 400
 401        for selector
 402        do
 403                orig_selector=$selector
 404
 405                positive=t
 406                case "$selector" in
 407                        !*)
 408                                positive=
 409                                selector=${selector##?}
 410                                ;;
 411                esac
 412
 413                test -z "$selector" && continue
 414
 415                case "$selector" in
 416                        *-*)
 417                                if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 418                                then
 419                                        echo "error: $title: invalid non-numeric in range" \
 420                                                "start: '$orig_selector'" >&2
 421                                        exit 1
 422                                fi
 423                                if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 424                                then
 425                                        echo "error: $title: invalid non-numeric in range" \
 426                                                "end: '$orig_selector'" >&2
 427                                        exit 1
 428                                fi
 429                                ;;
 430                        *)
 431                                if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 432                                then
 433                                        echo "error: $title: invalid non-numeric in test" \
 434                                                "selector: '$orig_selector'" >&2
 435                                        exit 1
 436                                fi
 437                esac
 438
 439                # Short cut for "obvious" cases
 440                test -z "$include" && test -z "$positive" && continue
 441                test -n "$include" && test -n "$positive" && continue
 442
 443                case "$selector" in
 444                        -*)
 445                                if test $arg -le ${selector#-}
 446                                then
 447                                        include=$positive
 448                                fi
 449                                ;;
 450                        *-)
 451                                if test $arg -ge ${selector%-}
 452                                then
 453                                        include=$positive
 454                                fi
 455                                ;;
 456                        *-*)
 457                                if test ${selector%%-*} -le $arg \
 458                                        && test $arg -le ${selector#*-}
 459                                then
 460                                        include=$positive
 461                                fi
 462                                ;;
 463                        *)
 464                                if test $arg -eq $selector
 465                                then
 466                                        include=$positive
 467                                fi
 468                                ;;
 469                esac
 470        done
 471
 472        test -n "$include"
 473}
 474
 475maybe_teardown_verbose () {
 476        test -z "$verbose_only" && return
 477        exec 4>/dev/null 3>/dev/null
 478        verbose=
 479}
 480
 481last_verbose=t
 482maybe_setup_verbose () {
 483        test -z "$verbose_only" && return
 484        if match_pattern_list $test_count $verbose_only
 485        then
 486                exec 4>&2 3>&1
 487                # Emit a delimiting blank line when going from
 488                # non-verbose to verbose.  Within verbose mode the
 489                # delimiter is printed by test_expect_*.  The choice
 490                # of the initial $last_verbose is such that before
 491                # test 1, we do not print it.
 492                test -z "$last_verbose" && echo >&3 ""
 493                verbose=t
 494        else
 495                exec 4>/dev/null 3>/dev/null
 496                verbose=
 497        fi
 498        last_verbose=$verbose
 499}
 500
 501maybe_teardown_valgrind () {
 502        test -z "$GIT_VALGRIND" && return
 503        GIT_VALGRIND_ENABLED=
 504}
 505
 506maybe_setup_valgrind () {
 507        test -z "$GIT_VALGRIND" && return
 508        if test -z "$valgrind_only"
 509        then
 510                GIT_VALGRIND_ENABLED=t
 511                return
 512        fi
 513        GIT_VALGRIND_ENABLED=
 514        if match_pattern_list $test_count $valgrind_only
 515        then
 516                GIT_VALGRIND_ENABLED=t
 517        fi
 518}
 519
 520test_eval_ () {
 521        # This is a separate function because some tests use
 522        # "return" to end a test_expect_success block early.
 523        eval </dev/null >&3 2>&4 "$*"
 524}
 525
 526test_run_ () {
 527        test_cleanup=:
 528        expecting_failure=$2
 529        setup_malloc_check
 530        test_eval_ "$1"
 531        eval_ret=$?
 532        teardown_malloc_check
 533
 534        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 535        then
 536                setup_malloc_check
 537                test_eval_ "$test_cleanup"
 538                teardown_malloc_check
 539        fi
 540        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 541        then
 542                echo ""
 543        fi
 544        return "$eval_ret"
 545}
 546
 547test_start_ () {
 548        test_count=$(($test_count+1))
 549        maybe_setup_verbose
 550        maybe_setup_valgrind
 551}
 552
 553test_finish_ () {
 554        echo >&3 ""
 555        maybe_teardown_valgrind
 556        maybe_teardown_verbose
 557}
 558
 559test_skip () {
 560        to_skip=
 561        skipped_reason=
 562        if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 563        then
 564                to_skip=t
 565                skipped_reason="GIT_SKIP_TESTS"
 566        fi
 567        if test -z "$to_skip" && test -n "$test_prereq" &&
 568           ! test_have_prereq "$test_prereq"
 569        then
 570                to_skip=t
 571
 572                of_prereq=
 573                if test "$missing_prereq" != "$test_prereq"
 574                then
 575                        of_prereq=" of $test_prereq"
 576                fi
 577                skipped_reason="missing $missing_prereq${of_prereq}"
 578        fi
 579        if test -z "$to_skip" && test -n "$run_list" &&
 580                ! match_test_selector_list '--run' $test_count "$run_list"
 581        then
 582                to_skip=t
 583                skipped_reason="--run"
 584        fi
 585
 586        case "$to_skip" in
 587        t)
 588                say_color skip >&3 "skipping test: $@"
 589                say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 590                : true
 591                ;;
 592        *)
 593                false
 594                ;;
 595        esac
 596}
 597
 598# stub; perf-lib overrides it
 599test_at_end_hook_ () {
 600        :
 601}
 602
 603test_done () {
 604        GIT_EXIT_OK=t
 605
 606        if test -z "$HARNESS_ACTIVE"
 607        then
 608                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 609                mkdir -p "$test_results_dir"
 610                base=${0##*/}
 611                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 612
 613                cat >>"$test_results_path" <<-EOF
 614                total $test_count
 615                success $test_success
 616                fixed $test_fixed
 617                broken $test_broken
 618                failed $test_failure
 619
 620                EOF
 621        fi
 622
 623        if test "$test_fixed" != 0
 624        then
 625                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 626        fi
 627        if test "$test_broken" != 0
 628        then
 629                say_color warn "# still have $test_broken known breakage(s)"
 630        fi
 631        if test "$test_broken" != 0 || test "$test_fixed" != 0
 632        then
 633                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 634                msg="remaining $test_remaining test(s)"
 635        else
 636                test_remaining=$test_count
 637                msg="$test_count test(s)"
 638        fi
 639        case "$test_failure" in
 640        0)
 641                # Maybe print SKIP message
 642                if test -n "$skip_all" && test $test_count -gt 0
 643                then
 644                        error "Can't use skip_all after running some tests"
 645                fi
 646                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 647
 648                if test $test_external_has_tap -eq 0
 649                then
 650                        if test $test_remaining -gt 0
 651                        then
 652                                say_color pass "# passed all $msg"
 653                        fi
 654                        say "1..$test_count$skip_all"
 655                fi
 656
 657                test -d "$remove_trash" &&
 658                cd "$(dirname "$remove_trash")" &&
 659                rm -rf "$(basename "$remove_trash")"
 660
 661                test_at_end_hook_
 662
 663                exit 0 ;;
 664
 665        *)
 666                if test $test_external_has_tap -eq 0
 667                then
 668                        say_color error "# failed $test_failure among $msg"
 669                        say "1..$test_count"
 670                fi
 671
 672                exit 1 ;;
 673
 674        esac
 675}
 676
 677if test -n "$valgrind"
 678then
 679        make_symlink () {
 680                test -h "$2" &&
 681                test "$1" = "$(readlink "$2")" || {
 682                        # be super paranoid
 683                        if mkdir "$2".lock
 684                        then
 685                                rm -f "$2" &&
 686                                ln -s "$1" "$2" &&
 687                                rm -r "$2".lock
 688                        else
 689                                while test -d "$2".lock
 690                                do
 691                                        say "Waiting for lock on $2."
 692                                        sleep 1
 693                                done
 694                        fi
 695                }
 696        }
 697
 698        make_valgrind_symlink () {
 699                # handle only executables, unless they are shell libraries that
 700                # need to be in the exec-path.
 701                test -x "$1" ||
 702                test "# " = "$(head -c 2 <"$1")" ||
 703                return;
 704
 705                base=$(basename "$1")
 706                symlink_target=$GIT_BUILD_DIR/$base
 707                # do not override scripts
 708                if test -x "$symlink_target" &&
 709                    test ! -d "$symlink_target" &&
 710                    test "#!" != "$(head -c 2 < "$symlink_target")"
 711                then
 712                        symlink_target=../valgrind.sh
 713                fi
 714                case "$base" in
 715                *.sh|*.perl)
 716                        symlink_target=../unprocessed-script
 717                esac
 718                # create the link, or replace it if it is out of date
 719                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 720        }
 721
 722        # override all git executables in TEST_DIRECTORY/..
 723        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 724        mkdir -p "$GIT_VALGRIND"/bin
 725        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 726        do
 727                make_valgrind_symlink $file
 728        done
 729        # special-case the mergetools loadables
 730        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 731        OLDIFS=$IFS
 732        IFS=:
 733        for path in $PATH
 734        do
 735                ls "$path"/git-* 2> /dev/null |
 736                while read file
 737                do
 738                        make_valgrind_symlink "$file"
 739                done
 740        done
 741        IFS=$OLDIFS
 742        PATH=$GIT_VALGRIND/bin:$PATH
 743        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 744        export GIT_VALGRIND
 745        GIT_VALGRIND_MODE="$valgrind"
 746        export GIT_VALGRIND_MODE
 747        GIT_VALGRIND_ENABLED=t
 748        test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 749        export GIT_VALGRIND_ENABLED
 750elif test -n "$GIT_TEST_INSTALLED"
 751then
 752        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 753        error "Cannot run git from $GIT_TEST_INSTALLED."
 754        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 755        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 756else # normal case, use ../bin-wrappers only unless $with_dashes:
 757        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 758        if ! test -x "$git_bin_dir/git"
 759        then
 760                if test -z "$with_dashes"
 761                then
 762                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 763                fi
 764                with_dashes=t
 765        fi
 766        PATH="$git_bin_dir:$PATH"
 767        GIT_EXEC_PATH=$GIT_BUILD_DIR
 768        if test -n "$with_dashes"
 769        then
 770                PATH="$GIT_BUILD_DIR:$PATH"
 771        fi
 772fi
 773GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 774GIT_CONFIG_NOSYSTEM=1
 775GIT_ATTR_NOSYSTEM=1
 776export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 777
 778if test -z "$GIT_TEST_CMP"
 779then
 780        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 781        then
 782                GIT_TEST_CMP="$DIFF -c"
 783        else
 784                GIT_TEST_CMP="$DIFF -u"
 785        fi
 786fi
 787
 788GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 789export GITPERLLIB
 790test -d "$GIT_BUILD_DIR"/templates/blt || {
 791        error "You haven't built things yet, have you?"
 792}
 793
 794if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 795then
 796        echo >&2 'You need to build test-chmtime:'
 797        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 798        exit 1
 799fi
 800
 801# Test repository
 802TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 803test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 804case "$TRASH_DIRECTORY" in
 805/*) ;; # absolute path is good
 806 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 807esac
 808test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 809rm -fr "$TRASH_DIRECTORY" || {
 810        GIT_EXIT_OK=t
 811        echo >&5 "FATAL: Cannot prepare test area"
 812        exit 1
 813}
 814
 815HOME="$TRASH_DIRECTORY"
 816export HOME
 817
 818if test -z "$TEST_NO_CREATE_REPO"
 819then
 820        test_create_repo "$TRASH_DIRECTORY"
 821else
 822        mkdir -p "$TRASH_DIRECTORY"
 823fi
 824# Use -P to resolve symlinks in our working directory so that the cwd
 825# in subprocesses like git equals our $PWD (for pathname comparisons).
 826cd -P "$TRASH_DIRECTORY" || exit 1
 827
 828this_test=${0##*/}
 829this_test=${this_test%%-*}
 830if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 831then
 832        say_color info >&3 "skipping test $this_test altogether"
 833        skip_all="skip all tests in $this_test"
 834        test_done
 835fi
 836
 837# Provide an implementation of the 'yes' utility
 838yes () {
 839        if test $# = 0
 840        then
 841                y=y
 842        else
 843                y="$*"
 844        fi
 845
 846        while echo "$y"
 847        do
 848                :
 849        done
 850}
 851
 852# Fix some commands on Windows
 853case $(uname -s) in
 854*MINGW*)
 855        # Windows has its own (incompatible) sort and find
 856        sort () {
 857                /usr/bin/sort "$@"
 858        }
 859        find () {
 860                /usr/bin/find "$@"
 861        }
 862        sum () {
 863                md5sum "$@"
 864        }
 865        # git sees Windows-style pwd
 866        pwd () {
 867                builtin pwd -W
 868        }
 869        # no POSIX permissions
 870        # backslashes in pathspec are converted to '/'
 871        # exec does not inherit the PID
 872        test_set_prereq MINGW
 873        test_set_prereq NATIVE_CRLF
 874        test_set_prereq SED_STRIPS_CR
 875        test_set_prereq GREP_STRIPS_CR
 876        GIT_TEST_CMP=mingw_test_cmp
 877        ;;
 878*CYGWIN*)
 879        test_set_prereq POSIXPERM
 880        test_set_prereq EXECKEEPSPID
 881        test_set_prereq CYGWIN
 882        test_set_prereq SED_STRIPS_CR
 883        test_set_prereq GREP_STRIPS_CR
 884        ;;
 885*)
 886        test_set_prereq POSIXPERM
 887        test_set_prereq BSLASHPSPEC
 888        test_set_prereq EXECKEEPSPID
 889        ;;
 890esac
 891
 892( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 893test -z "$NO_PERL" && test_set_prereq PERL
 894test -z "$NO_PYTHON" && test_set_prereq PYTHON
 895test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 896test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 897
 898# Can we rely on git's output in the C locale?
 899if test -n "$GETTEXT_POISON"
 900then
 901        GIT_GETTEXT_POISON=YesPlease
 902        export GIT_GETTEXT_POISON
 903        test_set_prereq GETTEXT_POISON
 904else
 905        test_set_prereq C_LOCALE_OUTPUT
 906fi
 907
 908# Use this instead of test_cmp to compare files that contain expected and
 909# actual output from git commands that can be translated.  When running
 910# under GETTEXT_POISON this pretends that the command produced expected
 911# results.
 912test_i18ncmp () {
 913        test -n "$GETTEXT_POISON" || test_cmp "$@"
 914}
 915
 916# Use this instead of "grep expected-string actual" to see if the
 917# output from a git command that can be translated either contains an
 918# expected string, or does not contain an unwanted one.  When running
 919# under GETTEXT_POISON this pretends that the command produced expected
 920# results.
 921test_i18ngrep () {
 922        if test -n "$GETTEXT_POISON"
 923        then
 924            : # pretend success
 925        elif test "x!" = "x$1"
 926        then
 927                shift
 928                ! grep "$@"
 929        else
 930                grep "$@"
 931        fi
 932}
 933
 934test_lazy_prereq PIPE '
 935        # test whether the filesystem supports FIFOs
 936        case $(uname -s) in
 937        CYGWIN*)
 938                false
 939                ;;
 940        *)
 941                rm -f testfifo && mkfifo testfifo
 942                ;;
 943        esac
 944'
 945
 946test_lazy_prereq SYMLINKS '
 947        # test whether the filesystem supports symbolic links
 948        ln -s x y && test -h y
 949'
 950
 951test_lazy_prereq FILEMODE '
 952        test "$(git config --bool core.filemode)" = true
 953'
 954
 955test_lazy_prereq CASE_INSENSITIVE_FS '
 956        echo good >CamelCase &&
 957        echo bad >camelcase &&
 958        test "$(cat CamelCase)" != good
 959'
 960
 961test_lazy_prereq UTF8_NFD_TO_NFC '
 962        # check whether FS converts nfd unicode to nfc
 963        auml=$(printf "\303\244")
 964        aumlcdiar=$(printf "\141\314\210")
 965        >"$auml" &&
 966        case "$(echo *)" in
 967        "$aumlcdiar")
 968                true ;;
 969        *)
 970                false ;;
 971        esac
 972'
 973
 974test_lazy_prereq AUTOIDENT '
 975        sane_unset GIT_AUTHOR_NAME &&
 976        sane_unset GIT_AUTHOR_EMAIL &&
 977        git var GIT_AUTHOR_IDENT
 978'
 979
 980test_lazy_prereq EXPENSIVE '
 981        test -n "$GIT_TEST_LONG"
 982'
 983
 984test_lazy_prereq USR_BIN_TIME '
 985        test -x /usr/bin/time
 986'
 987
 988# When the tests are run as root, permission tests will report that
 989# things are writable when they shouldn't be.
 990test -w / || test_set_prereq SANITY
 991
 992GIT_UNZIP=${GIT_UNZIP:-unzip}
 993test_lazy_prereq UNZIP '
 994        "$GIT_UNZIP" -v
 995        test $? -ne 127
 996'