t / test-lib.shon commit Merge branch 'ym/fix-opportunistic-index-update-race' (9af098c)
   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 $ok = join("|", qw(
  85                TRACE
  86                DEBUG
  87                USE_LOOKUP
  88                TEST
  89                .*_TEST
  90                PROVE
  91                VALGRIND
  92                UNZIP
  93                PERF_
  94        ));
  95        my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  96        print join("\n", @vars);
  97')
  98unset XDG_CONFIG_HOME
  99unset GITPERLLIB
 100GIT_AUTHOR_EMAIL=author@example.com
 101GIT_AUTHOR_NAME='A U Thor'
 102GIT_COMMITTER_EMAIL=committer@example.com
 103GIT_COMMITTER_NAME='C O Mitter'
 104GIT_MERGE_VERBOSITY=5
 105GIT_MERGE_AUTOEDIT=no
 106export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 107export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 108export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 109export EDITOR
 110
 111if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 112then
 113        GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 114        export GIT_INDEX_VERSION
 115fi
 116
 117# Add libc MALLOC and MALLOC_PERTURB test
 118# only if we are not executing the test with valgrind
 119if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 120   test -n "$TEST_NO_MALLOC_CHECK"
 121then
 122        setup_malloc_check () {
 123                : nothing
 124        }
 125        teardown_malloc_check () {
 126                : nothing
 127        }
 128else
 129        setup_malloc_check () {
 130                MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 131                export MALLOC_CHECK_ MALLOC_PERTURB_
 132        }
 133        teardown_malloc_check () {
 134                unset MALLOC_CHECK_ MALLOC_PERTURB_
 135        }
 136fi
 137
 138# Protect ourselves from common misconfiguration to export
 139# CDPATH into the environment
 140unset CDPATH
 141
 142unset GREP_OPTIONS
 143unset UNZIP
 144
 145case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 1461|2|true)
 147        echo "* warning: Some tests will not work if GIT_TRACE" \
 148                "is set as to trace on STDERR ! *"
 149        echo "* warning: Please set GIT_TRACE to something" \
 150                "other than 1, 2 or true ! *"
 151        ;;
 152esac
 153
 154# Convenience
 155#
 156# A regexp to match 5 and 40 hexdigits
 157_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 158_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 159
 160# Zero SHA-1
 161_z40=0000000000000000000000000000000000000000
 162
 163# Line feed
 164LF='
 165'
 166
 167export _x05 _x40 _z40 LF
 168
 169# Each test should start with something like this, after copyright notices:
 170#
 171# test_description='Description of this test...
 172# This test checks if command xyzzy does the right thing...
 173# '
 174# . ./test-lib.sh
 175[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 176                TERM=$ORIGINAL_TERM &&
 177                export TERM &&
 178                [ -t 1 ] &&
 179                tput bold >/dev/null 2>&1 &&
 180                tput setaf 1 >/dev/null 2>&1 &&
 181                tput sgr0 >/dev/null 2>&1
 182        ) &&
 183        color=t
 184
 185while test "$#" -ne 0
 186do
 187        case "$1" in
 188        -d|--d|--de|--deb|--debu|--debug)
 189                debug=t; shift ;;
 190        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 191                immediate=t; shift ;;
 192        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 193                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 194        -h|--h|--he|--hel|--help)
 195                help=t; shift ;;
 196        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 197                verbose=t; shift ;;
 198        --verbose-only=*)
 199                verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 200                shift ;;
 201        -q|--q|--qu|--qui|--quie|--quiet)
 202                # Ignore --quiet under a TAP::Harness. Saying how many tests
 203                # passed without the ok/not ok details is always an error.
 204                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 205        --with-dashes)
 206                with_dashes=t; shift ;;
 207        --no-color)
 208                color=; shift ;;
 209        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 210                valgrind=memcheck
 211                shift ;;
 212        --valgrind=*)
 213                valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 214                shift ;;
 215        --valgrind-only=*)
 216                valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 217                shift ;;
 218        --tee)
 219                shift ;; # was handled already
 220        --root=*)
 221                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 222                shift ;;
 223        *)
 224                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 225        esac
 226done
 227
 228if test -n "$valgrind_only"
 229then
 230        test -z "$valgrind" && valgrind=memcheck
 231        test -z "$verbose" && verbose_only="$valgrind_only"
 232elif test -n "$valgrind"
 233then
 234        verbose=t
 235fi
 236
 237if test -n "$color"
 238then
 239        say_color () {
 240                (
 241                TERM=$ORIGINAL_TERM
 242                export TERM
 243                case "$1" in
 244                error)
 245                        tput bold; tput setaf 1;; # bold red
 246                skip)
 247                        tput setaf 4;; # blue
 248                warn)
 249                        tput setaf 3;; # brown/yellow
 250                pass)
 251                        tput setaf 2;; # green
 252                info)
 253                        tput setaf 6;; # cyan
 254                *)
 255                        test -n "$quiet" && return;;
 256                esac
 257                shift
 258                printf "%s" "$*"
 259                tput sgr0
 260                echo
 261                )
 262        }
 263else
 264        say_color() {
 265                test -z "$1" && test -n "$quiet" && return
 266                shift
 267                printf "%s\n" "$*"
 268        }
 269fi
 270
 271error () {
 272        say_color error "error: $*"
 273        GIT_EXIT_OK=t
 274        exit 1
 275}
 276
 277say () {
 278        say_color info "$*"
 279}
 280
 281test "${test_description}" != "" ||
 282error "Test script did not set test_description."
 283
 284if test "$help" = "t"
 285then
 286        printf '%s\n' "$test_description"
 287        exit 0
 288fi
 289
 290exec 5>&1
 291exec 6<&0
 292if test "$verbose" = "t"
 293then
 294        exec 4>&2 3>&1
 295else
 296        exec 4>/dev/null 3>/dev/null
 297fi
 298
 299test_failure=0
 300test_count=0
 301test_fixed=0
 302test_broken=0
 303test_success=0
 304
 305test_external_has_tap=0
 306
 307die () {
 308        code=$?
 309        if test -n "$GIT_EXIT_OK"
 310        then
 311                exit $code
 312        else
 313                echo >&5 "FATAL: Unexpected exit with code $code"
 314                exit 1
 315        fi
 316}
 317
 318GIT_EXIT_OK=
 319trap 'die' EXIT
 320
 321# The user-facing functions are loaded from a separate file so that
 322# test_perf subshells can have them too
 323. "$TEST_DIRECTORY/test-lib-functions.sh"
 324
 325# You are not expected to call test_ok_ and test_failure_ directly, use
 326# the test_expect_* functions instead.
 327
 328test_ok_ () {
 329        test_success=$(($test_success + 1))
 330        say_color "" "ok $test_count - $@"
 331}
 332
 333test_failure_ () {
 334        test_failure=$(($test_failure + 1))
 335        say_color error "not ok $test_count - $1"
 336        shift
 337        printf '%s\n' "$*" | sed -e 's/^/#      /'
 338        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 339}
 340
 341test_known_broken_ok_ () {
 342        test_fixed=$(($test_fixed+1))
 343        say_color error "ok $test_count - $@ # TODO known breakage vanished"
 344}
 345
 346test_known_broken_failure_ () {
 347        test_broken=$(($test_broken+1))
 348        say_color warn "not ok $test_count - $@ # TODO known breakage"
 349}
 350
 351test_debug () {
 352        test "$debug" = "" || eval "$1"
 353}
 354
 355match_pattern_list () {
 356        arg="$1"
 357        shift
 358        test -z "$*" && return 1
 359        for pattern_
 360        do
 361                case "$arg" in
 362                $pattern_)
 363                        return 0
 364                esac
 365        done
 366        return 1
 367}
 368
 369maybe_teardown_verbose () {
 370        test -z "$verbose_only" && return
 371        exec 4>/dev/null 3>/dev/null
 372        verbose=
 373}
 374
 375last_verbose=t
 376maybe_setup_verbose () {
 377        test -z "$verbose_only" && return
 378        if match_pattern_list $test_count $verbose_only
 379        then
 380                exec 4>&2 3>&1
 381                # Emit a delimiting blank line when going from
 382                # non-verbose to verbose.  Within verbose mode the
 383                # delimiter is printed by test_expect_*.  The choice
 384                # of the initial $last_verbose is such that before
 385                # test 1, we do not print it.
 386                test -z "$last_verbose" && echo >&3 ""
 387                verbose=t
 388        else
 389                exec 4>/dev/null 3>/dev/null
 390                verbose=
 391        fi
 392        last_verbose=$verbose
 393}
 394
 395maybe_teardown_valgrind () {
 396        test -z "$GIT_VALGRIND" && return
 397        GIT_VALGRIND_ENABLED=
 398}
 399
 400maybe_setup_valgrind () {
 401        test -z "$GIT_VALGRIND" && return
 402        if test -z "$valgrind_only"
 403        then
 404                GIT_VALGRIND_ENABLED=t
 405                return
 406        fi
 407        GIT_VALGRIND_ENABLED=
 408        if match_pattern_list $test_count $valgrind_only
 409        then
 410                GIT_VALGRIND_ENABLED=t
 411        fi
 412}
 413
 414test_eval_ () {
 415        # This is a separate function because some tests use
 416        # "return" to end a test_expect_success block early.
 417        eval </dev/null >&3 2>&4 "$*"
 418}
 419
 420test_run_ () {
 421        test_cleanup=:
 422        expecting_failure=$2
 423        setup_malloc_check
 424        test_eval_ "$1"
 425        eval_ret=$?
 426        teardown_malloc_check
 427
 428        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 429        then
 430                setup_malloc_check
 431                test_eval_ "$test_cleanup"
 432                teardown_malloc_check
 433        fi
 434        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 435        then
 436                echo ""
 437        fi
 438        return "$eval_ret"
 439}
 440
 441test_start_ () {
 442        test_count=$(($test_count+1))
 443        maybe_setup_verbose
 444        maybe_setup_valgrind
 445}
 446
 447test_finish_ () {
 448        echo >&3 ""
 449        maybe_teardown_valgrind
 450        maybe_teardown_verbose
 451}
 452
 453test_skip () {
 454        to_skip=
 455        if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 456        then
 457                to_skip=t
 458        fi
 459        if test -z "$to_skip" && test -n "$test_prereq" &&
 460           ! test_have_prereq "$test_prereq"
 461        then
 462                to_skip=t
 463        fi
 464        case "$to_skip" in
 465        t)
 466                of_prereq=
 467                if test "$missing_prereq" != "$test_prereq"
 468                then
 469                        of_prereq=" of $test_prereq"
 470                fi
 471
 472                say_color skip >&3 "skipping test: $@"
 473                say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 474                : true
 475                ;;
 476        *)
 477                false
 478                ;;
 479        esac
 480}
 481
 482# stub; perf-lib overrides it
 483test_at_end_hook_ () {
 484        :
 485}
 486
 487test_done () {
 488        GIT_EXIT_OK=t
 489
 490        if test -z "$HARNESS_ACTIVE"
 491        then
 492                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 493                mkdir -p "$test_results_dir"
 494                base=${0##*/}
 495                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 496
 497                cat >>"$test_results_path" <<-EOF
 498                total $test_count
 499                success $test_success
 500                fixed $test_fixed
 501                broken $test_broken
 502                failed $test_failure
 503
 504                EOF
 505        fi
 506
 507        if test "$test_fixed" != 0
 508        then
 509                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 510        fi
 511        if test "$test_broken" != 0
 512        then
 513                say_color warn "# still have $test_broken known breakage(s)"
 514        fi
 515        if test "$test_broken" != 0 || test "$test_fixed" != 0
 516        then
 517                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 518                msg="remaining $test_remaining test(s)"
 519        else
 520                test_remaining=$test_count
 521                msg="$test_count test(s)"
 522        fi
 523        case "$test_failure" in
 524        0)
 525                # Maybe print SKIP message
 526                if test -n "$skip_all" && test $test_count -gt 0
 527                then
 528                        error "Can't use skip_all after running some tests"
 529                fi
 530                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 531
 532                if test $test_external_has_tap -eq 0
 533                then
 534                        if test $test_remaining -gt 0
 535                        then
 536                                say_color pass "# passed all $msg"
 537                        fi
 538                        say "1..$test_count$skip_all"
 539                fi
 540
 541                test -d "$remove_trash" &&
 542                cd "$(dirname "$remove_trash")" &&
 543                rm -rf "$(basename "$remove_trash")"
 544
 545                test_at_end_hook_
 546
 547                exit 0 ;;
 548
 549        *)
 550                if test $test_external_has_tap -eq 0
 551                then
 552                        say_color error "# failed $test_failure among $msg"
 553                        say "1..$test_count"
 554                fi
 555
 556                exit 1 ;;
 557
 558        esac
 559}
 560
 561if test -n "$valgrind"
 562then
 563        make_symlink () {
 564                test -h "$2" &&
 565                test "$1" = "$(readlink "$2")" || {
 566                        # be super paranoid
 567                        if mkdir "$2".lock
 568                        then
 569                                rm -f "$2" &&
 570                                ln -s "$1" "$2" &&
 571                                rm -r "$2".lock
 572                        else
 573                                while test -d "$2".lock
 574                                do
 575                                        say "Waiting for lock on $2."
 576                                        sleep 1
 577                                done
 578                        fi
 579                }
 580        }
 581
 582        make_valgrind_symlink () {
 583                # handle only executables, unless they are shell libraries that
 584                # need to be in the exec-path.
 585                test -x "$1" ||
 586                test "# " = "$(head -c 2 <"$1")" ||
 587                return;
 588
 589                base=$(basename "$1")
 590                symlink_target=$GIT_BUILD_DIR/$base
 591                # do not override scripts
 592                if test -x "$symlink_target" &&
 593                    test ! -d "$symlink_target" &&
 594                    test "#!" != "$(head -c 2 < "$symlink_target")"
 595                then
 596                        symlink_target=../valgrind.sh
 597                fi
 598                case "$base" in
 599                *.sh|*.perl)
 600                        symlink_target=../unprocessed-script
 601                esac
 602                # create the link, or replace it if it is out of date
 603                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 604        }
 605
 606        # override all git executables in TEST_DIRECTORY/..
 607        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 608        mkdir -p "$GIT_VALGRIND"/bin
 609        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 610        do
 611                make_valgrind_symlink $file
 612        done
 613        # special-case the mergetools loadables
 614        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 615        OLDIFS=$IFS
 616        IFS=:
 617        for path in $PATH
 618        do
 619                ls "$path"/git-* 2> /dev/null |
 620                while read file
 621                do
 622                        make_valgrind_symlink "$file"
 623                done
 624        done
 625        IFS=$OLDIFS
 626        PATH=$GIT_VALGRIND/bin:$PATH
 627        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 628        export GIT_VALGRIND
 629        GIT_VALGRIND_MODE="$valgrind"
 630        export GIT_VALGRIND_MODE
 631        GIT_VALGRIND_ENABLED=t
 632        test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 633        export GIT_VALGRIND_ENABLED
 634elif test -n "$GIT_TEST_INSTALLED"
 635then
 636        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 637        error "Cannot run git from $GIT_TEST_INSTALLED."
 638        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 639        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 640else # normal case, use ../bin-wrappers only unless $with_dashes:
 641        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 642        if ! test -x "$git_bin_dir/git"
 643        then
 644                if test -z "$with_dashes"
 645                then
 646                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 647                fi
 648                with_dashes=t
 649        fi
 650        PATH="$git_bin_dir:$PATH"
 651        GIT_EXEC_PATH=$GIT_BUILD_DIR
 652        if test -n "$with_dashes"
 653        then
 654                PATH="$GIT_BUILD_DIR:$PATH"
 655        fi
 656fi
 657GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 658GIT_CONFIG_NOSYSTEM=1
 659GIT_ATTR_NOSYSTEM=1
 660export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 661
 662if test -z "$GIT_TEST_CMP"
 663then
 664        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 665        then
 666                GIT_TEST_CMP="$DIFF -c"
 667        else
 668                GIT_TEST_CMP="$DIFF -u"
 669        fi
 670fi
 671
 672GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 673export GITPERLLIB
 674test -d "$GIT_BUILD_DIR"/templates/blt || {
 675        error "You haven't built things yet, have you?"
 676}
 677
 678if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 679then
 680        echo >&2 'You need to build test-chmtime:'
 681        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 682        exit 1
 683fi
 684
 685# Test repository
 686TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 687test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 688case "$TRASH_DIRECTORY" in
 689/*) ;; # absolute path is good
 690 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 691esac
 692test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 693rm -fr "$TRASH_DIRECTORY" || {
 694        GIT_EXIT_OK=t
 695        echo >&5 "FATAL: Cannot prepare test area"
 696        exit 1
 697}
 698
 699HOME="$TRASH_DIRECTORY"
 700export HOME
 701
 702if test -z "$TEST_NO_CREATE_REPO"
 703then
 704        test_create_repo "$TRASH_DIRECTORY"
 705else
 706        mkdir -p "$TRASH_DIRECTORY"
 707fi
 708# Use -P to resolve symlinks in our working directory so that the cwd
 709# in subprocesses like git equals our $PWD (for pathname comparisons).
 710cd -P "$TRASH_DIRECTORY" || exit 1
 711
 712this_test=${0##*/}
 713this_test=${this_test%%-*}
 714if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 715then
 716        say_color info >&3 "skipping test $this_test altogether"
 717        skip_all="skip all tests in $this_test"
 718        test_done
 719fi
 720
 721# Provide an implementation of the 'yes' utility
 722yes () {
 723        if test $# = 0
 724        then
 725                y=y
 726        else
 727                y="$*"
 728        fi
 729
 730        while echo "$y"
 731        do
 732                :
 733        done
 734}
 735
 736# Fix some commands on Windows
 737case $(uname -s) in
 738*MINGW*)
 739        # Windows has its own (incompatible) sort and find
 740        sort () {
 741                /usr/bin/sort "$@"
 742        }
 743        find () {
 744                /usr/bin/find "$@"
 745        }
 746        sum () {
 747                md5sum "$@"
 748        }
 749        # git sees Windows-style pwd
 750        pwd () {
 751                builtin pwd -W
 752        }
 753        # no POSIX permissions
 754        # backslashes in pathspec are converted to '/'
 755        # exec does not inherit the PID
 756        test_set_prereq MINGW
 757        test_set_prereq NOT_CYGWIN
 758        test_set_prereq SED_STRIPS_CR
 759        test_set_prereq GREP_STRIPS_CR
 760        GIT_TEST_CMP=mingw_test_cmp
 761        ;;
 762*CYGWIN*)
 763        test_set_prereq POSIXPERM
 764        test_set_prereq EXECKEEPSPID
 765        test_set_prereq NOT_MINGW
 766        test_set_prereq CYGWIN
 767        test_set_prereq SED_STRIPS_CR
 768        test_set_prereq GREP_STRIPS_CR
 769        ;;
 770*)
 771        test_set_prereq POSIXPERM
 772        test_set_prereq BSLASHPSPEC
 773        test_set_prereq EXECKEEPSPID
 774        test_set_prereq NOT_MINGW
 775        test_set_prereq NOT_CYGWIN
 776        ;;
 777esac
 778
 779( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 780test -z "$NO_PERL" && test_set_prereq PERL
 781test -z "$NO_PYTHON" && test_set_prereq PYTHON
 782test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 783test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 784
 785# Can we rely on git's output in the C locale?
 786if test -n "$GETTEXT_POISON"
 787then
 788        GIT_GETTEXT_POISON=YesPlease
 789        export GIT_GETTEXT_POISON
 790        test_set_prereq GETTEXT_POISON
 791else
 792        test_set_prereq C_LOCALE_OUTPUT
 793fi
 794
 795# Use this instead of test_cmp to compare files that contain expected and
 796# actual output from git commands that can be translated.  When running
 797# under GETTEXT_POISON this pretends that the command produced expected
 798# results.
 799test_i18ncmp () {
 800        test -n "$GETTEXT_POISON" || test_cmp "$@"
 801}
 802
 803# Use this instead of "grep expected-string actual" to see if the
 804# output from a git command that can be translated either contains an
 805# expected string, or does not contain an unwanted one.  When running
 806# under GETTEXT_POISON this pretends that the command produced expected
 807# results.
 808test_i18ngrep () {
 809        if test -n "$GETTEXT_POISON"
 810        then
 811            : # pretend success
 812        elif test "x!" = "x$1"
 813        then
 814                shift
 815                ! grep "$@"
 816        else
 817                grep "$@"
 818        fi
 819}
 820
 821test_lazy_prereq PIPE '
 822        # test whether the filesystem supports FIFOs
 823        case $(uname -s) in
 824        CYGWIN*)
 825                false
 826                ;;
 827        *)
 828                rm -f testfifo && mkfifo testfifo
 829                ;;
 830        esac
 831'
 832
 833test_lazy_prereq SYMLINKS '
 834        # test whether the filesystem supports symbolic links
 835        ln -s x y && test -h y
 836'
 837
 838test_lazy_prereq FILEMODE '
 839        test "$(git config --bool core.filemode)" = true
 840'
 841
 842test_lazy_prereq CASE_INSENSITIVE_FS '
 843        echo good >CamelCase &&
 844        echo bad >camelcase &&
 845        test "$(cat CamelCase)" != good
 846'
 847
 848test_lazy_prereq UTF8_NFD_TO_NFC '
 849        # check whether FS converts nfd unicode to nfc
 850        auml=$(printf "\303\244")
 851        aumlcdiar=$(printf "\141\314\210")
 852        >"$auml" &&
 853        case "$(echo *)" in
 854        "$aumlcdiar")
 855                true ;;
 856        *)
 857                false ;;
 858        esac
 859'
 860
 861test_lazy_prereq AUTOIDENT '
 862        sane_unset GIT_AUTHOR_NAME &&
 863        sane_unset GIT_AUTHOR_EMAIL &&
 864        git var GIT_AUTHOR_IDENT
 865'
 866
 867# When the tests are run as root, permission tests will report that
 868# things are writable when they shouldn't be.
 869test -w / || test_set_prereq SANITY
 870
 871GIT_UNZIP=${GIT_UNZIP:-unzip}
 872test_lazy_prereq UNZIP '
 873        "$GIT_UNZIP" -v
 874        test $? -ne 127
 875'