t / test-lib.shon commit Sync with v1.9.5 (5e519fb)
   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$_x05"
 159
 160# Zero SHA-1
 161_z40=0000000000000000000000000000000000000000
 162
 163# Line feed
 164LF='
 165'
 166
 167# UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 168# when case-folding filenames
 169u200c=$(printf '\342\200\214')
 170
 171export _x05 _x40 _z40 LF u200c
 172
 173# Each test should start with something like this, after copyright notices:
 174#
 175# test_description='Description of this test...
 176# This test checks if command xyzzy does the right thing...
 177# '
 178# . ./test-lib.sh
 179[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 180                TERM=$ORIGINAL_TERM &&
 181                export TERM &&
 182                [ -t 1 ] &&
 183                tput bold >/dev/null 2>&1 &&
 184                tput setaf 1 >/dev/null 2>&1 &&
 185                tput sgr0 >/dev/null 2>&1
 186        ) &&
 187        color=t
 188
 189while test "$#" -ne 0
 190do
 191        case "$1" in
 192        -d|--d|--de|--deb|--debu|--debug)
 193                debug=t; shift ;;
 194        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 195                immediate=t; shift ;;
 196        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 197                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 198        -h|--h|--he|--hel|--help)
 199                help=t; shift ;;
 200        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 201                verbose=t; shift ;;
 202        --verbose-only=*)
 203                verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 204                shift ;;
 205        -q|--q|--qu|--qui|--quie|--quiet)
 206                # Ignore --quiet under a TAP::Harness. Saying how many tests
 207                # passed without the ok/not ok details is always an error.
 208                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 209        --with-dashes)
 210                with_dashes=t; shift ;;
 211        --no-color)
 212                color=; shift ;;
 213        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 214                valgrind=memcheck
 215                shift ;;
 216        --valgrind=*)
 217                valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 218                shift ;;
 219        --valgrind-only=*)
 220                valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 221                shift ;;
 222        --tee)
 223                shift ;; # was handled already
 224        --root=*)
 225                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 226                shift ;;
 227        *)
 228                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 229        esac
 230done
 231
 232if test -n "$valgrind_only"
 233then
 234        test -z "$valgrind" && valgrind=memcheck
 235        test -z "$verbose" && verbose_only="$valgrind_only"
 236elif test -n "$valgrind"
 237then
 238        verbose=t
 239fi
 240
 241if test -n "$color"
 242then
 243        say_color () {
 244                (
 245                TERM=$ORIGINAL_TERM
 246                export TERM
 247                case "$1" in
 248                error)
 249                        tput bold; tput setaf 1;; # bold red
 250                skip)
 251                        tput setaf 4;; # blue
 252                warn)
 253                        tput setaf 3;; # brown/yellow
 254                pass)
 255                        tput setaf 2;; # green
 256                info)
 257                        tput setaf 6;; # cyan
 258                *)
 259                        test -n "$quiet" && return;;
 260                esac
 261                shift
 262                printf "%s" "$*"
 263                tput sgr0
 264                echo
 265                )
 266        }
 267else
 268        say_color() {
 269                test -z "$1" && test -n "$quiet" && return
 270                shift
 271                printf "%s\n" "$*"
 272        }
 273fi
 274
 275error () {
 276        say_color error "error: $*"
 277        GIT_EXIT_OK=t
 278        exit 1
 279}
 280
 281say () {
 282        say_color info "$*"
 283}
 284
 285test "${test_description}" != "" ||
 286error "Test script did not set test_description."
 287
 288if test "$help" = "t"
 289then
 290        printf '%s\n' "$test_description"
 291        exit 0
 292fi
 293
 294exec 5>&1
 295exec 6<&0
 296if test "$verbose" = "t"
 297then
 298        exec 4>&2 3>&1
 299else
 300        exec 4>/dev/null 3>/dev/null
 301fi
 302
 303test_failure=0
 304test_count=0
 305test_fixed=0
 306test_broken=0
 307test_success=0
 308
 309test_external_has_tap=0
 310
 311die () {
 312        code=$?
 313        if test -n "$GIT_EXIT_OK"
 314        then
 315                exit $code
 316        else
 317                echo >&5 "FATAL: Unexpected exit with code $code"
 318                exit 1
 319        fi
 320}
 321
 322GIT_EXIT_OK=
 323trap 'die' EXIT
 324
 325# The user-facing functions are loaded from a separate file so that
 326# test_perf subshells can have them too
 327. "$TEST_DIRECTORY/test-lib-functions.sh"
 328
 329# You are not expected to call test_ok_ and test_failure_ directly, use
 330# the test_expect_* functions instead.
 331
 332test_ok_ () {
 333        test_success=$(($test_success + 1))
 334        say_color "" "ok $test_count - $@"
 335}
 336
 337test_failure_ () {
 338        test_failure=$(($test_failure + 1))
 339        say_color error "not ok $test_count - $1"
 340        shift
 341        printf '%s\n' "$*" | sed -e 's/^/#      /'
 342        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 343}
 344
 345test_known_broken_ok_ () {
 346        test_fixed=$(($test_fixed+1))
 347        say_color error "ok $test_count - $@ # TODO known breakage vanished"
 348}
 349
 350test_known_broken_failure_ () {
 351        test_broken=$(($test_broken+1))
 352        say_color warn "not ok $test_count - $@ # TODO known breakage"
 353}
 354
 355test_debug () {
 356        test "$debug" = "" || eval "$1"
 357}
 358
 359match_pattern_list () {
 360        arg="$1"
 361        shift
 362        test -z "$*" && return 1
 363        for pattern_
 364        do
 365                case "$arg" in
 366                $pattern_)
 367                        return 0
 368                esac
 369        done
 370        return 1
 371}
 372
 373maybe_teardown_verbose () {
 374        test -z "$verbose_only" && return
 375        exec 4>/dev/null 3>/dev/null
 376        verbose=
 377}
 378
 379last_verbose=t
 380maybe_setup_verbose () {
 381        test -z "$verbose_only" && return
 382        if match_pattern_list $test_count $verbose_only
 383        then
 384                exec 4>&2 3>&1
 385                # Emit a delimiting blank line when going from
 386                # non-verbose to verbose.  Within verbose mode the
 387                # delimiter is printed by test_expect_*.  The choice
 388                # of the initial $last_verbose is such that before
 389                # test 1, we do not print it.
 390                test -z "$last_verbose" && echo >&3 ""
 391                verbose=t
 392        else
 393                exec 4>/dev/null 3>/dev/null
 394                verbose=
 395        fi
 396        last_verbose=$verbose
 397}
 398
 399maybe_teardown_valgrind () {
 400        test -z "$GIT_VALGRIND" && return
 401        GIT_VALGRIND_ENABLED=
 402}
 403
 404maybe_setup_valgrind () {
 405        test -z "$GIT_VALGRIND" && return
 406        if test -z "$valgrind_only"
 407        then
 408                GIT_VALGRIND_ENABLED=t
 409                return
 410        fi
 411        GIT_VALGRIND_ENABLED=
 412        if match_pattern_list $test_count $valgrind_only
 413        then
 414                GIT_VALGRIND_ENABLED=t
 415        fi
 416}
 417
 418test_eval_ () {
 419        # This is a separate function because some tests use
 420        # "return" to end a test_expect_success block early.
 421        eval </dev/null >&3 2>&4 "$*"
 422}
 423
 424test_run_ () {
 425        test_cleanup=:
 426        expecting_failure=$2
 427        setup_malloc_check
 428        test_eval_ "$1"
 429        eval_ret=$?
 430        teardown_malloc_check
 431
 432        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 433        then
 434                setup_malloc_check
 435                test_eval_ "$test_cleanup"
 436                teardown_malloc_check
 437        fi
 438        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 439        then
 440                echo ""
 441        fi
 442        return "$eval_ret"
 443}
 444
 445test_start_ () {
 446        test_count=$(($test_count+1))
 447        maybe_setup_verbose
 448        maybe_setup_valgrind
 449}
 450
 451test_finish_ () {
 452        echo >&3 ""
 453        maybe_teardown_valgrind
 454        maybe_teardown_verbose
 455}
 456
 457test_skip () {
 458        to_skip=
 459        if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 460        then
 461                to_skip=t
 462        fi
 463        if test -z "$to_skip" && test -n "$test_prereq" &&
 464           ! test_have_prereq "$test_prereq"
 465        then
 466                to_skip=t
 467        fi
 468        case "$to_skip" in
 469        t)
 470                of_prereq=
 471                if test "$missing_prereq" != "$test_prereq"
 472                then
 473                        of_prereq=" of $test_prereq"
 474                fi
 475
 476                say_color skip >&3 "skipping test: $@"
 477                say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 478                : true
 479                ;;
 480        *)
 481                false
 482                ;;
 483        esac
 484}
 485
 486# stub; perf-lib overrides it
 487test_at_end_hook_ () {
 488        :
 489}
 490
 491test_done () {
 492        GIT_EXIT_OK=t
 493
 494        if test -z "$HARNESS_ACTIVE"
 495        then
 496                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 497                mkdir -p "$test_results_dir"
 498                base=${0##*/}
 499                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 500
 501                cat >>"$test_results_path" <<-EOF
 502                total $test_count
 503                success $test_success
 504                fixed $test_fixed
 505                broken $test_broken
 506                failed $test_failure
 507
 508                EOF
 509        fi
 510
 511        if test "$test_fixed" != 0
 512        then
 513                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 514        fi
 515        if test "$test_broken" != 0
 516        then
 517                say_color warn "# still have $test_broken known breakage(s)"
 518        fi
 519        if test "$test_broken" != 0 || test "$test_fixed" != 0
 520        then
 521                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 522                msg="remaining $test_remaining test(s)"
 523        else
 524                test_remaining=$test_count
 525                msg="$test_count test(s)"
 526        fi
 527        case "$test_failure" in
 528        0)
 529                # Maybe print SKIP message
 530                if test -n "$skip_all" && test $test_count -gt 0
 531                then
 532                        error "Can't use skip_all after running some tests"
 533                fi
 534                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 535
 536                if test $test_external_has_tap -eq 0
 537                then
 538                        if test $test_remaining -gt 0
 539                        then
 540                                say_color pass "# passed all $msg"
 541                        fi
 542                        say "1..$test_count$skip_all"
 543                fi
 544
 545                test -d "$remove_trash" &&
 546                cd "$(dirname "$remove_trash")" &&
 547                rm -rf "$(basename "$remove_trash")"
 548
 549                test_at_end_hook_
 550
 551                exit 0 ;;
 552
 553        *)
 554                if test $test_external_has_tap -eq 0
 555                then
 556                        say_color error "# failed $test_failure among $msg"
 557                        say "1..$test_count"
 558                fi
 559
 560                exit 1 ;;
 561
 562        esac
 563}
 564
 565if test -n "$valgrind"
 566then
 567        make_symlink () {
 568                test -h "$2" &&
 569                test "$1" = "$(readlink "$2")" || {
 570                        # be super paranoid
 571                        if mkdir "$2".lock
 572                        then
 573                                rm -f "$2" &&
 574                                ln -s "$1" "$2" &&
 575                                rm -r "$2".lock
 576                        else
 577                                while test -d "$2".lock
 578                                do
 579                                        say "Waiting for lock on $2."
 580                                        sleep 1
 581                                done
 582                        fi
 583                }
 584        }
 585
 586        make_valgrind_symlink () {
 587                # handle only executables, unless they are shell libraries that
 588                # need to be in the exec-path.
 589                test -x "$1" ||
 590                test "# " = "$(head -c 2 <"$1")" ||
 591                return;
 592
 593                base=$(basename "$1")
 594                symlink_target=$GIT_BUILD_DIR/$base
 595                # do not override scripts
 596                if test -x "$symlink_target" &&
 597                    test ! -d "$symlink_target" &&
 598                    test "#!" != "$(head -c 2 < "$symlink_target")"
 599                then
 600                        symlink_target=../valgrind.sh
 601                fi
 602                case "$base" in
 603                *.sh|*.perl)
 604                        symlink_target=../unprocessed-script
 605                esac
 606                # create the link, or replace it if it is out of date
 607                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 608        }
 609
 610        # override all git executables in TEST_DIRECTORY/..
 611        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 612        mkdir -p "$GIT_VALGRIND"/bin
 613        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 614        do
 615                make_valgrind_symlink $file
 616        done
 617        # special-case the mergetools loadables
 618        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 619        OLDIFS=$IFS
 620        IFS=:
 621        for path in $PATH
 622        do
 623                ls "$path"/git-* 2> /dev/null |
 624                while read file
 625                do
 626                        make_valgrind_symlink "$file"
 627                done
 628        done
 629        IFS=$OLDIFS
 630        PATH=$GIT_VALGRIND/bin:$PATH
 631        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 632        export GIT_VALGRIND
 633        GIT_VALGRIND_MODE="$valgrind"
 634        export GIT_VALGRIND_MODE
 635        GIT_VALGRIND_ENABLED=t
 636        test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 637        export GIT_VALGRIND_ENABLED
 638elif test -n "$GIT_TEST_INSTALLED"
 639then
 640        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 641        error "Cannot run git from $GIT_TEST_INSTALLED."
 642        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 643        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 644else # normal case, use ../bin-wrappers only unless $with_dashes:
 645        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 646        if ! test -x "$git_bin_dir/git"
 647        then
 648                if test -z "$with_dashes"
 649                then
 650                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 651                fi
 652                with_dashes=t
 653        fi
 654        PATH="$git_bin_dir:$PATH"
 655        GIT_EXEC_PATH=$GIT_BUILD_DIR
 656        if test -n "$with_dashes"
 657        then
 658                PATH="$GIT_BUILD_DIR:$PATH"
 659        fi
 660fi
 661GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 662GIT_CONFIG_NOSYSTEM=1
 663GIT_ATTR_NOSYSTEM=1
 664export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 665
 666if test -z "$GIT_TEST_CMP"
 667then
 668        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 669        then
 670                GIT_TEST_CMP="$DIFF -c"
 671        else
 672                GIT_TEST_CMP="$DIFF -u"
 673        fi
 674fi
 675
 676GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 677export GITPERLLIB
 678test -d "$GIT_BUILD_DIR"/templates/blt || {
 679        error "You haven't built things yet, have you?"
 680}
 681
 682if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 683then
 684        echo >&2 'You need to build test-chmtime:'
 685        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 686        exit 1
 687fi
 688
 689# Test repository
 690TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 691test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 692case "$TRASH_DIRECTORY" in
 693/*) ;; # absolute path is good
 694 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 695esac
 696test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 697rm -fr "$TRASH_DIRECTORY" || {
 698        GIT_EXIT_OK=t
 699        echo >&5 "FATAL: Cannot prepare test area"
 700        exit 1
 701}
 702
 703HOME="$TRASH_DIRECTORY"
 704export HOME
 705
 706if test -z "$TEST_NO_CREATE_REPO"
 707then
 708        test_create_repo "$TRASH_DIRECTORY"
 709else
 710        mkdir -p "$TRASH_DIRECTORY"
 711fi
 712# Use -P to resolve symlinks in our working directory so that the cwd
 713# in subprocesses like git equals our $PWD (for pathname comparisons).
 714cd -P "$TRASH_DIRECTORY" || exit 1
 715
 716this_test=${0##*/}
 717this_test=${this_test%%-*}
 718if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 719then
 720        say_color info >&3 "skipping test $this_test altogether"
 721        skip_all="skip all tests in $this_test"
 722        test_done
 723fi
 724
 725# Provide an implementation of the 'yes' utility
 726yes () {
 727        if test $# = 0
 728        then
 729                y=y
 730        else
 731                y="$*"
 732        fi
 733
 734        while echo "$y"
 735        do
 736                :
 737        done
 738}
 739
 740# Fix some commands on Windows
 741case $(uname -s) in
 742*MINGW*)
 743        # Windows has its own (incompatible) sort and find
 744        sort () {
 745                /usr/bin/sort "$@"
 746        }
 747        find () {
 748                /usr/bin/find "$@"
 749        }
 750        sum () {
 751                md5sum "$@"
 752        }
 753        # git sees Windows-style pwd
 754        pwd () {
 755                builtin pwd -W
 756        }
 757        # no POSIX permissions
 758        # backslashes in pathspec are converted to '/'
 759        # exec does not inherit the PID
 760        test_set_prereq MINGW
 761        test_set_prereq NOT_CYGWIN
 762        test_set_prereq SED_STRIPS_CR
 763        test_set_prereq GREP_STRIPS_CR
 764        GIT_TEST_CMP=mingw_test_cmp
 765        ;;
 766*CYGWIN*)
 767        test_set_prereq POSIXPERM
 768        test_set_prereq EXECKEEPSPID
 769        test_set_prereq NOT_MINGW
 770        test_set_prereq CYGWIN
 771        test_set_prereq SED_STRIPS_CR
 772        test_set_prereq GREP_STRIPS_CR
 773        ;;
 774*)
 775        test_set_prereq POSIXPERM
 776        test_set_prereq BSLASHPSPEC
 777        test_set_prereq EXECKEEPSPID
 778        test_set_prereq NOT_MINGW
 779        test_set_prereq NOT_CYGWIN
 780        ;;
 781esac
 782
 783( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 784test -z "$NO_PERL" && test_set_prereq PERL
 785test -z "$NO_PYTHON" && test_set_prereq PYTHON
 786test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 787test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 788
 789# Can we rely on git's output in the C locale?
 790if test -n "$GETTEXT_POISON"
 791then
 792        GIT_GETTEXT_POISON=YesPlease
 793        export GIT_GETTEXT_POISON
 794        test_set_prereq GETTEXT_POISON
 795else
 796        test_set_prereq C_LOCALE_OUTPUT
 797fi
 798
 799# Use this instead of test_cmp to compare files that contain expected and
 800# actual output from git commands that can be translated.  When running
 801# under GETTEXT_POISON this pretends that the command produced expected
 802# results.
 803test_i18ncmp () {
 804        test -n "$GETTEXT_POISON" || test_cmp "$@"
 805}
 806
 807# Use this instead of "grep expected-string actual" to see if the
 808# output from a git command that can be translated either contains an
 809# expected string, or does not contain an unwanted one.  When running
 810# under GETTEXT_POISON this pretends that the command produced expected
 811# results.
 812test_i18ngrep () {
 813        if test -n "$GETTEXT_POISON"
 814        then
 815            : # pretend success
 816        elif test "x!" = "x$1"
 817        then
 818                shift
 819                ! grep "$@"
 820        else
 821                grep "$@"
 822        fi
 823}
 824
 825test_lazy_prereq PIPE '
 826        # test whether the filesystem supports FIFOs
 827        case $(uname -s) in
 828        CYGWIN*)
 829                false
 830                ;;
 831        *)
 832                rm -f testfifo && mkfifo testfifo
 833                ;;
 834        esac
 835'
 836
 837test_lazy_prereq SYMLINKS '
 838        # test whether the filesystem supports symbolic links
 839        ln -s x y && test -h y
 840'
 841
 842test_lazy_prereq FILEMODE '
 843        test "$(git config --bool core.filemode)" = true
 844'
 845
 846test_lazy_prereq CASE_INSENSITIVE_FS '
 847        echo good >CamelCase &&
 848        echo bad >camelcase &&
 849        test "$(cat CamelCase)" != good
 850'
 851
 852test_lazy_prereq UTF8_NFD_TO_NFC '
 853        # check whether FS converts nfd unicode to nfc
 854        auml=$(printf "\303\244")
 855        aumlcdiar=$(printf "\141\314\210")
 856        >"$auml" &&
 857        case "$(echo *)" in
 858        "$aumlcdiar")
 859                true ;;
 860        *)
 861                false ;;
 862        esac
 863'
 864
 865test_lazy_prereq AUTOIDENT '
 866        sane_unset GIT_AUTHOR_NAME &&
 867        sane_unset GIT_AUTHOR_EMAIL &&
 868        git var GIT_AUTHOR_IDENT
 869'
 870
 871# When the tests are run as root, permission tests will report that
 872# things are writable when they shouldn't be.
 873test -w / || test_set_prereq SANITY
 874
 875GIT_UNZIP=${GIT_UNZIP:-unzip}
 876test_lazy_prereq UNZIP '
 877        "$GIT_UNZIP" -v
 878        test $? -ne 127
 879'