Andrew's git / gitweb.git / t/test-lib.sh
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t / test-lib.shon commit am --skip: support skipping while on unborn branch (f8da680)
   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$_x05"
 164
 165# Zero SHA-1
 166_z40=0000000000000000000000000000000000000000
 167
 168# Line feed
 169LF='
 170'
 171
 172# UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 173# when case-folding filenames
 174u200c=$(printf '\342\200\214')
 175
 176export _x05 _x40 _z40 LF u200c
 177
 178# Each test should start with something like this, after copyright notices:
 179#
 180# test_description='Description of this test...
 181# This test checks if command xyzzy does the right thing...
 182# '
 183# . ./test-lib.sh
 184[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 185                TERM=$ORIGINAL_TERM &&
 186                export TERM &&
 187                [ -t 1 ] &&
 188                tput bold >/dev/null 2>&1 &&
 189                tput setaf 1 >/dev/null 2>&1 &&
 190                tput sgr0 >/dev/null 2>&1
 191        ) &&
 192        color=t
 193
 194while test "$#" -ne 0
 195do
 196        case "$1" in
 197        -d|--d|--de|--deb|--debu|--debug)
 198                debug=t; shift ;;
 199        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 200                immediate=t; shift ;;
 201        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 202                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 203        -r)
 204                shift; test "$#" -ne 0 || {
 205                        echo 'error: -r requires an argument' >&2;
 206                        exit 1;
 207                }
 208                run_list=$1; shift ;;
 209        --run=*)
 210                run_list=$(expr "z$1" : 'z[^=]*=\(.*\)'); shift ;;
 211        -h|--h|--he|--hel|--help)
 212                help=t; shift ;;
 213        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 214                verbose=t; shift ;;
 215        --verbose-only=*)
 216                verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 217                shift ;;
 218        -q|--q|--qu|--qui|--quie|--quiet)
 219                # Ignore --quiet under a TAP::Harness. Saying how many tests
 220                # passed without the ok/not ok details is always an error.
 221                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 222        --with-dashes)
 223                with_dashes=t; shift ;;
 224        --no-color)
 225                color=; shift ;;
 226        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 227                valgrind=memcheck
 228                shift ;;
 229        --valgrind=*)
 230                valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 231                shift ;;
 232        --valgrind-only=*)
 233                valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 234                shift ;;
 235        --tee)
 236                shift ;; # was handled already
 237        --root=*)
 238                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 239                shift ;;
 240        -x)
 241                trace=t
 242                verbose=t
 243                shift ;;
 244        *)
 245                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 246        esac
 247done
 248
 249if test -n "$valgrind_only"
 250then
 251        test -z "$valgrind" && valgrind=memcheck
 252        test -z "$verbose" && verbose_only="$valgrind_only"
 253elif test -n "$valgrind"
 254then
 255        verbose=t
 256fi
 257
 258if test -n "$color"
 259then
 260        say_color () {
 261                (
 262                TERM=$ORIGINAL_TERM
 263                export TERM
 264                case "$1" in
 265                error)
 266                        tput bold; tput setaf 1;; # bold red
 267                skip)
 268                        tput setaf 4;; # blue
 269                warn)
 270                        tput setaf 3;; # brown/yellow
 271                pass)
 272                        tput setaf 2;; # green
 273                info)
 274                        tput setaf 6;; # cyan
 275                *)
 276                        test -n "$quiet" && return;;
 277                esac
 278                shift
 279                printf "%s" "$*"
 280                tput sgr0
 281                echo
 282                )
 283        }
 284else
 285        say_color() {
 286                test -z "$1" && test -n "$quiet" && return
 287                shift
 288                printf "%s\n" "$*"
 289        }
 290fi
 291
 292error () {
 293        say_color error "error: $*"
 294        GIT_EXIT_OK=t
 295        exit 1
 296}
 297
 298say () {
 299        say_color info "$*"
 300}
 301
 302test "${test_description}" != "" ||
 303error "Test script did not set test_description."
 304
 305if test "$help" = "t"
 306then
 307        printf '%s\n' "$test_description"
 308        exit 0
 309fi
 310
 311exec 5>&1
 312exec 6<&0
 313if test "$verbose" = "t"
 314then
 315        exec 4>&2 3>&1
 316else
 317        exec 4>/dev/null 3>/dev/null
 318fi
 319
 320test_failure=0
 321test_count=0
 322test_fixed=0
 323test_broken=0
 324test_success=0
 325
 326test_external_has_tap=0
 327
 328die () {
 329        code=$?
 330        if test -n "$GIT_EXIT_OK"
 331        then
 332                exit $code
 333        else
 334                echo >&5 "FATAL: Unexpected exit with code $code"
 335                exit 1
 336        fi
 337}
 338
 339GIT_EXIT_OK=
 340trap 'die' EXIT
 341
 342# The user-facing functions are loaded from a separate file so that
 343# test_perf subshells can have them too
 344. "$TEST_DIRECTORY/test-lib-functions.sh"
 345
 346# You are not expected to call test_ok_ and test_failure_ directly, use
 347# the test_expect_* functions instead.
 348
 349test_ok_ () {
 350        test_success=$(($test_success + 1))
 351        say_color "" "ok $test_count - $@"
 352}
 353
 354test_failure_ () {
 355        test_failure=$(($test_failure + 1))
 356        say_color error "not ok $test_count - $1"
 357        shift
 358        printf '%s\n' "$*" | sed -e 's/^/#      /'
 359        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 360}
 361
 362test_known_broken_ok_ () {
 363        test_fixed=$(($test_fixed+1))
 364        say_color error "ok $test_count - $@ # TODO known breakage vanished"
 365}
 366
 367test_known_broken_failure_ () {
 368        test_broken=$(($test_broken+1))
 369        say_color warn "not ok $test_count - $@ # TODO known breakage"
 370}
 371
 372test_debug () {
 373        test "$debug" = "" || eval "$1"
 374}
 375
 376match_pattern_list () {
 377        arg="$1"
 378        shift
 379        test -z "$*" && return 1
 380        for pattern_
 381        do
 382                case "$arg" in
 383                $pattern_)
 384                        return 0
 385                esac
 386        done
 387        return 1
 388}
 389
 390match_test_selector_list () {
 391        title="$1"
 392        shift
 393        arg="$1"
 394        shift
 395        test -z "$1" && return 0
 396
 397        # Both commas and whitespace are accepted as separators.
 398        OLDIFS=$IFS
 399        IFS='   ,'
 400        set -- $1
 401        IFS=$OLDIFS
 402
 403        # If the first selector is negative we include by default.
 404        include=
 405        case "$1" in
 406                !*) include=t ;;
 407        esac
 408
 409        for selector
 410        do
 411                orig_selector=$selector
 412
 413                positive=t
 414                case "$selector" in
 415                        !*)
 416                                positive=
 417                                selector=${selector##?}
 418                                ;;
 419                esac
 420
 421                test -z "$selector" && continue
 422
 423                case "$selector" in
 424                        *-*)
 425                                if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 426                                then
 427                                        echo "error: $title: invalid non-numeric in range" \
 428                                                "start: '$orig_selector'" >&2
 429                                        exit 1
 430                                fi
 431                                if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 432                                then
 433                                        echo "error: $title: invalid non-numeric in range" \
 434                                                "end: '$orig_selector'" >&2
 435                                        exit 1
 436                                fi
 437                                ;;
 438                        *)
 439                                if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 440                                then
 441                                        echo "error: $title: invalid non-numeric in test" \
 442                                                "selector: '$orig_selector'" >&2
 443                                        exit 1
 444                                fi
 445                esac
 446
 447                # Short cut for "obvious" cases
 448                test -z "$include" && test -z "$positive" && continue
 449                test -n "$include" && test -n "$positive" && continue
 450
 451                case "$selector" in
 452                        -*)
 453                                if test $arg -le ${selector#-}
 454                                then
 455                                        include=$positive
 456                                fi
 457                                ;;
 458                        *-)
 459                                if test $arg -ge ${selector%-}
 460                                then
 461                                        include=$positive
 462                                fi
 463                                ;;
 464                        *-*)
 465                                if test ${selector%%-*} -le $arg \
 466                                        && test $arg -le ${selector#*-}
 467                                then
 468                                        include=$positive
 469                                fi
 470                                ;;
 471                        *)
 472                                if test $arg -eq $selector
 473                                then
 474                                        include=$positive
 475                                fi
 476                                ;;
 477                esac
 478        done
 479
 480        test -n "$include"
 481}
 482
 483maybe_teardown_verbose () {
 484        test -z "$verbose_only" && return
 485        exec 4>/dev/null 3>/dev/null
 486        verbose=
 487}
 488
 489last_verbose=t
 490maybe_setup_verbose () {
 491        test -z "$verbose_only" && return
 492        if match_pattern_list $test_count $verbose_only
 493        then
 494                exec 4>&2 3>&1
 495                # Emit a delimiting blank line when going from
 496                # non-verbose to verbose.  Within verbose mode the
 497                # delimiter is printed by test_expect_*.  The choice
 498                # of the initial $last_verbose is such that before
 499                # test 1, we do not print it.
 500                test -z "$last_verbose" && echo >&3 ""
 501                verbose=t
 502        else
 503                exec 4>/dev/null 3>/dev/null
 504                verbose=
 505        fi
 506        last_verbose=$verbose
 507}
 508
 509maybe_teardown_valgrind () {
 510        test -z "$GIT_VALGRIND" && return
 511        GIT_VALGRIND_ENABLED=
 512}
 513
 514maybe_setup_valgrind () {
 515        test -z "$GIT_VALGRIND" && return
 516        if test -z "$valgrind_only"
 517        then
 518                GIT_VALGRIND_ENABLED=t
 519                return
 520        fi
 521        GIT_VALGRIND_ENABLED=
 522        if match_pattern_list $test_count $valgrind_only
 523        then
 524                GIT_VALGRIND_ENABLED=t
 525        fi
 526}
 527
 528# This is a separate function because some tests use
 529# "return" to end a test_expect_success block early
 530# (and we want to make sure we run any cleanup like
 531# "set +x").
 532test_eval_inner_ () {
 533        # Do not add anything extra (including LF) after '$*'
 534        eval "
 535                test \"$trace\" = t && set -x
 536                $*"
 537}
 538
 539test_eval_ () {
 540        # We run this block with stderr redirected to avoid extra cruft
 541        # during a "-x" trace. Once in "set -x" mode, we cannot prevent
 542        # the shell from printing the "set +x" to turn it off (nor the saving
 543        # of $? before that). But we can make sure that the output goes to
 544        # /dev/null.
 545        #
 546        # The test itself is run with stderr put back to &4 (so either to
 547        # /dev/null, or to the original stderr if --verbose was used).
 548        {
 549                test_eval_inner_ "$@" </dev/null >&3 2>&4
 550                test_eval_ret_=$?
 551                if test "$trace" = t
 552                then
 553                        set +x
 554                        if test "$test_eval_ret_" != 0
 555                        then
 556                                say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 557                        fi
 558                fi
 559        } 2>/dev/null
 560        return $test_eval_ret_
 561}
 562
 563test_run_ () {
 564        test_cleanup=:
 565        expecting_failure=$2
 566        setup_malloc_check
 567        test_eval_ "$1"
 568        eval_ret=$?
 569        teardown_malloc_check
 570
 571        if test -z "$immediate" || test $eval_ret = 0 ||
 572           test -n "$expecting_failure" && test "$test_cleanup" != ":"
 573        then
 574                setup_malloc_check
 575                test_eval_ "$test_cleanup"
 576                teardown_malloc_check
 577        fi
 578        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 579        then
 580                echo ""
 581        fi
 582        return "$eval_ret"
 583}
 584
 585test_start_ () {
 586        test_count=$(($test_count+1))
 587        maybe_setup_verbose
 588        maybe_setup_valgrind
 589}
 590
 591test_finish_ () {
 592        echo >&3 ""
 593        maybe_teardown_valgrind
 594        maybe_teardown_verbose
 595}
 596
 597test_skip () {
 598        to_skip=
 599        skipped_reason=
 600        if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 601        then
 602                to_skip=t
 603                skipped_reason="GIT_SKIP_TESTS"
 604        fi
 605        if test -z "$to_skip" && test -n "$test_prereq" &&
 606           ! test_have_prereq "$test_prereq"
 607        then
 608                to_skip=t
 609
 610                of_prereq=
 611                if test "$missing_prereq" != "$test_prereq"
 612                then
 613                        of_prereq=" of $test_prereq"
 614                fi
 615                skipped_reason="missing $missing_prereq${of_prereq}"
 616        fi
 617        if test -z "$to_skip" && test -n "$run_list" &&
 618                ! match_test_selector_list '--run' $test_count "$run_list"
 619        then
 620                to_skip=t
 621                skipped_reason="--run"
 622        fi
 623
 624        case "$to_skip" in
 625        t)
 626                say_color skip >&3 "skipping test: $@"
 627                say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 628                : true
 629                ;;
 630        *)
 631                false
 632                ;;
 633        esac
 634}
 635
 636# stub; perf-lib overrides it
 637test_at_end_hook_ () {
 638        :
 639}
 640
 641test_done () {
 642        GIT_EXIT_OK=t
 643
 644        if test -z "$HARNESS_ACTIVE"
 645        then
 646                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 647                mkdir -p "$test_results_dir"
 648                base=${0##*/}
 649                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 650
 651                cat >>"$test_results_path" <<-EOF
 652                total $test_count
 653                success $test_success
 654                fixed $test_fixed
 655                broken $test_broken
 656                failed $test_failure
 657
 658                EOF
 659        fi
 660
 661        if test "$test_fixed" != 0
 662        then
 663                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 664        fi
 665        if test "$test_broken" != 0
 666        then
 667                say_color warn "# still have $test_broken known breakage(s)"
 668        fi
 669        if test "$test_broken" != 0 || test "$test_fixed" != 0
 670        then
 671                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 672                msg="remaining $test_remaining test(s)"
 673        else
 674                test_remaining=$test_count
 675                msg="$test_count test(s)"
 676        fi
 677        case "$test_failure" in
 678        0)
 679                # Maybe print SKIP message
 680                if test -n "$skip_all" && test $test_count -gt 0
 681                then
 682                        error "Can't use skip_all after running some tests"
 683                fi
 684                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 685
 686                if test $test_external_has_tap -eq 0
 687                then
 688                        if test $test_remaining -gt 0
 689                        then
 690                                say_color pass "# passed all $msg"
 691                        fi
 692                        say "1..$test_count$skip_all"
 693                fi
 694
 695                test -d "$remove_trash" &&
 696                cd "$(dirname "$remove_trash")" &&
 697                rm -rf "$(basename "$remove_trash")"
 698
 699                test_at_end_hook_
 700
 701                exit 0 ;;
 702
 703        *)
 704                if test $test_external_has_tap -eq 0
 705                then
 706                        say_color error "# failed $test_failure among $msg"
 707                        say "1..$test_count"
 708                fi
 709
 710                exit 1 ;;
 711
 712        esac
 713}
 714
 715if test -n "$valgrind"
 716then
 717        make_symlink () {
 718                test -h "$2" &&
 719                test "$1" = "$(readlink "$2")" || {
 720                        # be super paranoid
 721                        if mkdir "$2".lock
 722                        then
 723                                rm -f "$2" &&
 724                                ln -s "$1" "$2" &&
 725                                rm -r "$2".lock
 726                        else
 727                                while test -d "$2".lock
 728                                do
 729                                        say "Waiting for lock on $2."
 730                                        sleep 1
 731                                done
 732                        fi
 733                }
 734        }
 735
 736        make_valgrind_symlink () {
 737                # handle only executables, unless they are shell libraries that
 738                # need to be in the exec-path.
 739                test -x "$1" ||
 740                test "# " = "$(head -c 2 <"$1")" ||
 741                return;
 742
 743                base=$(basename "$1")
 744                symlink_target=$GIT_BUILD_DIR/$base
 745                # do not override scripts
 746                if test -x "$symlink_target" &&
 747                    test ! -d "$symlink_target" &&
 748                    test "#!" != "$(head -c 2 < "$symlink_target")"
 749                then
 750                        symlink_target=../valgrind.sh
 751                fi
 752                case "$base" in
 753                *.sh|*.perl)
 754                        symlink_target=../unprocessed-script
 755                esac
 756                # create the link, or replace it if it is out of date
 757                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 758        }
 759
 760        # override all git executables in TEST_DIRECTORY/..
 761        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 762        mkdir -p "$GIT_VALGRIND"/bin
 763        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 764        do
 765                make_valgrind_symlink $file
 766        done
 767        # special-case the mergetools loadables
 768        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 769        OLDIFS=$IFS
 770        IFS=:
 771        for path in $PATH
 772        do
 773                ls "$path"/git-* 2> /dev/null |
 774                while read file
 775                do
 776                        make_valgrind_symlink "$file"
 777                done
 778        done
 779        IFS=$OLDIFS
 780        PATH=$GIT_VALGRIND/bin:$PATH
 781        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 782        export GIT_VALGRIND
 783        GIT_VALGRIND_MODE="$valgrind"
 784        export GIT_VALGRIND_MODE
 785        GIT_VALGRIND_ENABLED=t
 786        test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 787        export GIT_VALGRIND_ENABLED
 788elif test -n "$GIT_TEST_INSTALLED"
 789then
 790        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 791        error "Cannot run git from $GIT_TEST_INSTALLED."
 792        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 793        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 794else # normal case, use ../bin-wrappers only unless $with_dashes:
 795        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 796        if ! test -x "$git_bin_dir/git"
 797        then
 798                if test -z "$with_dashes"
 799                then
 800                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 801                fi
 802                with_dashes=t
 803        fi
 804        PATH="$git_bin_dir:$PATH"
 805        GIT_EXEC_PATH=$GIT_BUILD_DIR
 806        if test -n "$with_dashes"
 807        then
 808                PATH="$GIT_BUILD_DIR:$PATH"
 809        fi
 810fi
 811GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 812GIT_CONFIG_NOSYSTEM=1
 813GIT_ATTR_NOSYSTEM=1
 814export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 815
 816if test -z "$GIT_TEST_CMP"
 817then
 818        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 819        then
 820                GIT_TEST_CMP="$DIFF -c"
 821        else
 822                GIT_TEST_CMP="$DIFF -u"
 823        fi
 824fi
 825
 826GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 827export GITPERLLIB
 828test -d "$GIT_BUILD_DIR"/templates/blt || {
 829        error "You haven't built things yet, have you?"
 830}
 831
 832if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 833then
 834        echo >&2 'You need to build test-chmtime:'
 835        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 836        exit 1
 837fi
 838
 839# Test repository
 840TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 841test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 842case "$TRASH_DIRECTORY" in
 843/*) ;; # absolute path is good
 844 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 845esac
 846test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 847rm -fr "$TRASH_DIRECTORY" || {
 848        GIT_EXIT_OK=t
 849        echo >&5 "FATAL: Cannot prepare test area"
 850        exit 1
 851}
 852
 853HOME="$TRASH_DIRECTORY"
 854GNUPGHOME="$HOME/gnupg-home-not-used"
 855export HOME GNUPGHOME
 856
 857if test -z "$TEST_NO_CREATE_REPO"
 858then
 859        test_create_repo "$TRASH_DIRECTORY"
 860else
 861        mkdir -p "$TRASH_DIRECTORY"
 862fi
 863# Use -P to resolve symlinks in our working directory so that the cwd
 864# in subprocesses like git equals our $PWD (for pathname comparisons).
 865cd -P "$TRASH_DIRECTORY" || exit 1
 866
 867this_test=${0##*/}
 868this_test=${this_test%%-*}
 869if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 870then
 871        say_color info >&3 "skipping test $this_test altogether"
 872        skip_all="skip all tests in $this_test"
 873        test_done
 874fi
 875
 876# Provide an implementation of the 'yes' utility
 877yes () {
 878        if test $# = 0
 879        then
 880                y=y
 881        else
 882                y="$*"
 883        fi
 884
 885        while echo "$y"
 886        do
 887                :
 888        done
 889}
 890
 891# Fix some commands on Windows
 892case $(uname -s) in
 893*MINGW*)
 894        # Windows has its own (incompatible) sort and find
 895        sort () {
 896                /usr/bin/sort "$@"
 897        }
 898        find () {
 899                /usr/bin/find "$@"
 900        }
 901        sum () {
 902                md5sum "$@"
 903        }
 904        # git sees Windows-style pwd
 905        pwd () {
 906                builtin pwd -W
 907        }
 908        # no POSIX permissions
 909        # backslashes in pathspec are converted to '/'
 910        # exec does not inherit the PID
 911        test_set_prereq MINGW
 912        test_set_prereq NATIVE_CRLF
 913        test_set_prereq SED_STRIPS_CR
 914        test_set_prereq GREP_STRIPS_CR
 915        GIT_TEST_CMP=mingw_test_cmp
 916        ;;
 917*CYGWIN*)
 918        test_set_prereq POSIXPERM
 919        test_set_prereq EXECKEEPSPID
 920        test_set_prereq CYGWIN
 921        test_set_prereq SED_STRIPS_CR
 922        test_set_prereq GREP_STRIPS_CR
 923        ;;
 924*)
 925        test_set_prereq POSIXPERM
 926        test_set_prereq BSLASHPSPEC
 927        test_set_prereq EXECKEEPSPID
 928        ;;
 929esac
 930
 931( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 932test -z "$NO_PERL" && test_set_prereq PERL
 933test -z "$NO_PYTHON" && test_set_prereq PYTHON
 934test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 935test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 936
 937# Can we rely on git's output in the C locale?
 938if test -n "$GETTEXT_POISON"
 939then
 940        GIT_GETTEXT_POISON=YesPlease
 941        export GIT_GETTEXT_POISON
 942        test_set_prereq GETTEXT_POISON
 943else
 944        test_set_prereq C_LOCALE_OUTPUT
 945fi
 946
 947# Use this instead of test_cmp to compare files that contain expected and
 948# actual output from git commands that can be translated.  When running
 949# under GETTEXT_POISON this pretends that the command produced expected
 950# results.
 951test_i18ncmp () {
 952        test -n "$GETTEXT_POISON" || test_cmp "$@"
 953}
 954
 955# Use this instead of "grep expected-string actual" to see if the
 956# output from a git command that can be translated either contains an
 957# expected string, or does not contain an unwanted one.  When running
 958# under GETTEXT_POISON this pretends that the command produced expected
 959# results.
 960test_i18ngrep () {
 961        if test -n "$GETTEXT_POISON"
 962        then
 963            : # pretend success
 964        elif test "x!" = "x$1"
 965        then
 966                shift
 967                ! grep "$@"
 968        else
 969                grep "$@"
 970        fi
 971}
 972
 973test_lazy_prereq PIPE '
 974        # test whether the filesystem supports FIFOs
 975        case $(uname -s) in
 976        CYGWIN*)
 977                false
 978                ;;
 979        *)
 980                rm -f testfifo && mkfifo testfifo
 981                ;;
 982        esac
 983'
 984
 985test_lazy_prereq SYMLINKS '
 986        # test whether the filesystem supports symbolic links
 987        ln -s x y && test -h y
 988'
 989
 990test_lazy_prereq FILEMODE '
 991        test "$(git config --bool core.filemode)" = true
 992'
 993
 994test_lazy_prereq CASE_INSENSITIVE_FS '
 995        echo good >CamelCase &&
 996        echo bad >camelcase &&
 997        test "$(cat CamelCase)" != good
 998'
 999
1000test_lazy_prereq UTF8_NFD_TO_NFC '
1001        # check whether FS converts nfd unicode to nfc
1002        auml=$(printf "\303\244")
1003        aumlcdiar=$(printf "\141\314\210")
1004        >"$auml" &&
1005        case "$(echo *)" in
1006        "$aumlcdiar")
1007                true ;;
1008        *)
1009                false ;;
1010        esac
1011'
1012
1013test_lazy_prereq AUTOIDENT '
1014        sane_unset GIT_AUTHOR_NAME &&
1015        sane_unset GIT_AUTHOR_EMAIL &&
1016        git var GIT_AUTHOR_IDENT
1017'
1018
1019test_lazy_prereq EXPENSIVE '
1020        test -n "$GIT_TEST_LONG"
1021'
1022
1023test_lazy_prereq USR_BIN_TIME '
1024        test -x /usr/bin/time
1025'
1026
1027# When the tests are run as root, permission tests will report that
1028# things are writable when they shouldn't be.
1029test -w / || test_set_prereq SANITY
1030
1031GIT_UNZIP=${GIT_UNZIP:-unzip}
1032test_lazy_prereq UNZIP '
1033        "$GIT_UNZIP" -v
1034        test $? -ne 127
1035'