t / test-lib.shon commit rev-list: disable object/refname ambiguity check with --stdin (4c30d50)
   1#!/bin/sh
   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=$(pwd)
  29fi
  30if test -z "$TEST_OUTPUT_DIRECTORY"
  31then
  32        # Similarly, override this to store the test-results subdir
  33        # elsewhere
  34        TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  35fi
  36GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  37
  38################################################################
  39# It appears that people try to run tests without building...
  40"$GIT_BUILD_DIR/git" >/dev/null
  41if test $? != 1
  42then
  43        echo >&2 'error: you do not seem to have built git yet.'
  44        exit 1
  45fi
  46
  47. "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  48export PERL_PATH SHELL_PATH
  49
  50# if --tee was passed, write the output not only to the terminal, but
  51# additionally to the file test-results/$BASENAME.out, too.
  52case "$GIT_TEST_TEE_STARTED, $* " in
  53done,*)
  54        # do not redirect again
  55        ;;
  56*' --tee '*|*' --va'*)
  57        mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
  58        BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
  59        (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  60         echo $? > $BASE.exit) | tee $BASE.out
  61        test "$(cat $BASE.exit)" = 0
  62        exit
  63        ;;
  64esac
  65
  66# For repeatability, reset the environment to known value.
  67LANG=C
  68LC_ALL=C
  69PAGER=cat
  70TZ=UTC
  71TERM=dumb
  72export LANG LC_ALL PAGER TERM TZ
  73EDITOR=:
  74# A call to "unset" with no arguments causes at least Solaris 10
  75# /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
  76# deriving from the command substitution clustered with the other
  77# ones.
  78unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  79        my @env = keys %ENV;
  80        my $ok = join("|", qw(
  81                TRACE
  82                DEBUG
  83                USE_LOOKUP
  84                TEST
  85                .*_TEST
  86                PROVE
  87                VALGRIND
  88                UNZIP
  89                PERF_
  90        ));
  91        my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  92        print join("\n", @vars);
  93')
  94unset XDG_CONFIG_HOME
  95unset GITPERLLIB
  96GIT_AUTHOR_EMAIL=author@example.com
  97GIT_AUTHOR_NAME='A U Thor'
  98GIT_COMMITTER_EMAIL=committer@example.com
  99GIT_COMMITTER_NAME='C O Mitter'
 100GIT_MERGE_VERBOSITY=5
 101GIT_MERGE_AUTOEDIT=no
 102export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 103export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 104export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 105export EDITOR
 106
 107# Add libc MALLOC and MALLOC_PERTURB test
 108# only if we are not executing the test with valgrind
 109if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 110   test -n "$TEST_NO_MALLOC_CHECK"
 111then
 112        setup_malloc_check () {
 113                : nothing
 114        }
 115        teardown_malloc_check () {
 116                : nothing
 117        }
 118else
 119        setup_malloc_check () {
 120                MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 121                export MALLOC_CHECK_ MALLOC_PERTURB_
 122        }
 123        teardown_malloc_check () {
 124                unset MALLOC_CHECK_ MALLOC_PERTURB_
 125        }
 126fi
 127
 128# Protect ourselves from common misconfiguration to export
 129# CDPATH into the environment
 130unset CDPATH
 131
 132unset GREP_OPTIONS
 133unset UNZIP
 134
 135case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 1361|2|true)
 137        echo "* warning: Some tests will not work if GIT_TRACE" \
 138                "is set as to trace on STDERR ! *"
 139        echo "* warning: Please set GIT_TRACE to something" \
 140                "other than 1, 2 or true ! *"
 141        ;;
 142esac
 143
 144# Convenience
 145#
 146# A regexp to match 5 and 40 hexdigits
 147_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 148_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 149
 150# Zero SHA-1
 151_z40=0000000000000000000000000000000000000000
 152
 153# Line feed
 154LF='
 155'
 156
 157export _x05 _x40 _z40 LF
 158
 159# Each test should start with something like this, after copyright notices:
 160#
 161# test_description='Description of this test...
 162# This test checks if command xyzzy does the right thing...
 163# '
 164# . ./test-lib.sh
 165[ "x$ORIGINAL_TERM" != "xdumb" ] && (
 166                TERM=$ORIGINAL_TERM &&
 167                export TERM &&
 168                [ -t 1 ] &&
 169                tput bold >/dev/null 2>&1 &&
 170                tput setaf 1 >/dev/null 2>&1 &&
 171                tput sgr0 >/dev/null 2>&1
 172        ) &&
 173        color=t
 174
 175while test "$#" -ne 0
 176do
 177        case "$1" in
 178        -d|--d|--de|--deb|--debu|--debug)
 179                debug=t; shift ;;
 180        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 181                immediate=t; shift ;;
 182        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 183                GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 184        -h|--h|--he|--hel|--help)
 185                help=t; shift ;;
 186        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 187                verbose=t; shift ;;
 188        --verbose-only=*)
 189                verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 190                shift ;;
 191        -q|--q|--qu|--qui|--quie|--quiet)
 192                # Ignore --quiet under a TAP::Harness. Saying how many tests
 193                # passed without the ok/not ok details is always an error.
 194                test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 195        --with-dashes)
 196                with_dashes=t; shift ;;
 197        --no-color)
 198                color=; shift ;;
 199        --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 200                valgrind=memcheck
 201                shift ;;
 202        --valgrind=*)
 203                valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 204                shift ;;
 205        --valgrind-only=*)
 206                valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 207                shift ;;
 208        --tee)
 209                shift ;; # was handled already
 210        --root=*)
 211                root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 212                shift ;;
 213        *)
 214                echo "error: unknown test option '$1'" >&2; exit 1 ;;
 215        esac
 216done
 217
 218if test -n "$valgrind_only"
 219then
 220        test -z "$valgrind" && valgrind=memcheck
 221        test -z "$verbose" && verbose_only="$valgrind_only"
 222elif test -n "$valgrind"
 223then
 224        verbose=t
 225fi
 226
 227if test -n "$color"
 228then
 229        say_color () {
 230                (
 231                TERM=$ORIGINAL_TERM
 232                export TERM
 233                case "$1" in
 234                error)
 235                        tput bold; tput setaf 1;; # bold red
 236                skip)
 237                        tput setaf 4;; # blue
 238                warn)
 239                        tput setaf 3;; # brown/yellow
 240                pass)
 241                        tput setaf 2;; # green
 242                info)
 243                        tput setaf 6;; # cyan
 244                *)
 245                        test -n "$quiet" && return;;
 246                esac
 247                shift
 248                printf "%s" "$*"
 249                tput sgr0
 250                echo
 251                )
 252        }
 253else
 254        say_color() {
 255                test -z "$1" && test -n "$quiet" && return
 256                shift
 257                printf "%s\n" "$*"
 258        }
 259fi
 260
 261error () {
 262        say_color error "error: $*"
 263        GIT_EXIT_OK=t
 264        exit 1
 265}
 266
 267say () {
 268        say_color info "$*"
 269}
 270
 271test "${test_description}" != "" ||
 272error "Test script did not set test_description."
 273
 274if test "$help" = "t"
 275then
 276        echo "$test_description"
 277        exit 0
 278fi
 279
 280exec 5>&1
 281exec 6<&0
 282if test "$verbose" = "t"
 283then
 284        exec 4>&2 3>&1
 285else
 286        exec 4>/dev/null 3>/dev/null
 287fi
 288
 289test_failure=0
 290test_count=0
 291test_fixed=0
 292test_broken=0
 293test_success=0
 294
 295test_external_has_tap=0
 296
 297die () {
 298        code=$?
 299        if test -n "$GIT_EXIT_OK"
 300        then
 301                exit $code
 302        else
 303                echo >&5 "FATAL: Unexpected exit with code $code"
 304                exit 1
 305        fi
 306}
 307
 308GIT_EXIT_OK=
 309trap 'die' EXIT
 310
 311# The user-facing functions are loaded from a separate file so that
 312# test_perf subshells can have them too
 313. "$TEST_DIRECTORY/test-lib-functions.sh"
 314
 315# You are not expected to call test_ok_ and test_failure_ directly, use
 316# the test_expect_* functions instead.
 317
 318test_ok_ () {
 319        test_success=$(($test_success + 1))
 320        say_color "" "ok $test_count - $@"
 321}
 322
 323test_failure_ () {
 324        test_failure=$(($test_failure + 1))
 325        say_color error "not ok $test_count - $1"
 326        shift
 327        echo "$@" | sed -e 's/^/#       /'
 328        test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 329}
 330
 331test_known_broken_ok_ () {
 332        test_fixed=$(($test_fixed+1))
 333        say_color error "ok $test_count - $@ # TODO known breakage vanished"
 334}
 335
 336test_known_broken_failure_ () {
 337        test_broken=$(($test_broken+1))
 338        say_color warn "not ok $test_count - $@ # TODO known breakage"
 339}
 340
 341test_debug () {
 342        test "$debug" = "" || eval "$1"
 343}
 344
 345match_pattern_list () {
 346        arg="$1"
 347        shift
 348        test -z "$*" && return 1
 349        for pattern_
 350        do
 351                case "$arg" in
 352                $pattern_)
 353                        return 0
 354                esac
 355        done
 356        return 1
 357}
 358
 359maybe_teardown_verbose () {
 360        test -z "$verbose_only" && return
 361        exec 4>/dev/null 3>/dev/null
 362        verbose=
 363}
 364
 365last_verbose=t
 366maybe_setup_verbose () {
 367        test -z "$verbose_only" && return
 368        if match_pattern_list $test_count $verbose_only
 369        then
 370                exec 4>&2 3>&1
 371                # Emit a delimiting blank line when going from
 372                # non-verbose to verbose.  Within verbose mode the
 373                # delimiter is printed by test_expect_*.  The choice
 374                # of the initial $last_verbose is such that before
 375                # test 1, we do not print it.
 376                test -z "$last_verbose" && echo >&3 ""
 377                verbose=t
 378        else
 379                exec 4>/dev/null 3>/dev/null
 380                verbose=
 381        fi
 382        last_verbose=$verbose
 383}
 384
 385maybe_teardown_valgrind () {
 386        test -z "$GIT_VALGRIND" && return
 387        GIT_VALGRIND_ENABLED=
 388}
 389
 390maybe_setup_valgrind () {
 391        test -z "$GIT_VALGRIND" && return
 392        if test -z "$valgrind_only"
 393        then
 394                GIT_VALGRIND_ENABLED=t
 395                return
 396        fi
 397        GIT_VALGRIND_ENABLED=
 398        if match_pattern_list $test_count $valgrind_only
 399        then
 400                GIT_VALGRIND_ENABLED=t
 401        fi
 402}
 403
 404test_eval_ () {
 405        # This is a separate function because some tests use
 406        # "return" to end a test_expect_success block early.
 407        eval </dev/null >&3 2>&4 "$*"
 408}
 409
 410test_run_ () {
 411        test_cleanup=:
 412        expecting_failure=$2
 413        setup_malloc_check
 414        test_eval_ "$1"
 415        eval_ret=$?
 416        teardown_malloc_check
 417
 418        if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
 419        then
 420                setup_malloc_check
 421                test_eval_ "$test_cleanup"
 422                teardown_malloc_check
 423        fi
 424        if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 425        then
 426                echo ""
 427        fi
 428        return "$eval_ret"
 429}
 430
 431test_start_ () {
 432        test_count=$(($test_count+1))
 433        maybe_setup_verbose
 434        maybe_setup_valgrind
 435}
 436
 437test_finish_ () {
 438        echo >&3 ""
 439        maybe_teardown_valgrind
 440        maybe_teardown_verbose
 441}
 442
 443test_skip () {
 444        to_skip=
 445        if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 446        then
 447                to_skip=t
 448        fi
 449        if test -z "$to_skip" && test -n "$test_prereq" &&
 450           ! test_have_prereq "$test_prereq"
 451        then
 452                to_skip=t
 453        fi
 454        case "$to_skip" in
 455        t)
 456                of_prereq=
 457                if test "$missing_prereq" != "$test_prereq"
 458                then
 459                        of_prereq=" of $test_prereq"
 460                fi
 461
 462                say_color skip >&3 "skipping test: $@"
 463                say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 464                : true
 465                ;;
 466        *)
 467                false
 468                ;;
 469        esac
 470}
 471
 472# stub; perf-lib overrides it
 473test_at_end_hook_ () {
 474        :
 475}
 476
 477test_done () {
 478        GIT_EXIT_OK=t
 479
 480        # Note: t0000 relies on $HARNESS_ACTIVE disabling the .counts
 481        # output file
 482        if test -z "$HARNESS_ACTIVE"
 483        then
 484                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 485                mkdir -p "$test_results_dir"
 486                base=${0##*/}
 487                test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 488
 489                cat >>"$test_results_path" <<-EOF
 490                total $test_count
 491                success $test_success
 492                fixed $test_fixed
 493                broken $test_broken
 494                failed $test_failure
 495
 496                EOF
 497        fi
 498
 499        if test "$test_fixed" != 0
 500        then
 501                say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 502        fi
 503        if test "$test_broken" != 0
 504        then
 505                say_color warn "# still have $test_broken known breakage(s)"
 506        fi
 507        if test "$test_broken" != 0 || test "$test_fixed" != 0
 508        then
 509                test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 510                msg="remaining $test_remaining test(s)"
 511        else
 512                test_remaining=$test_count
 513                msg="$test_count test(s)"
 514        fi
 515        case "$test_failure" in
 516        0)
 517                # Maybe print SKIP message
 518                if test -n "$skip_all" && test $test_count -gt 0
 519                then
 520                        error "Can't use skip_all after running some tests"
 521                fi
 522                [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
 523
 524                if test $test_external_has_tap -eq 0
 525                then
 526                        if test $test_remaining -gt 0
 527                        then
 528                                say_color pass "# passed all $msg"
 529                        fi
 530                        say "1..$test_count$skip_all"
 531                fi
 532
 533                test -d "$remove_trash" &&
 534                cd "$(dirname "$remove_trash")" &&
 535                rm -rf "$(basename "$remove_trash")"
 536
 537                test_at_end_hook_
 538
 539                exit 0 ;;
 540
 541        *)
 542                if test $test_external_has_tap -eq 0
 543                then
 544                        say_color error "# failed $test_failure among $msg"
 545                        say "1..$test_count"
 546                fi
 547
 548                exit 1 ;;
 549
 550        esac
 551}
 552
 553if test -n "$valgrind"
 554then
 555        make_symlink () {
 556                test -h "$2" &&
 557                test "$1" = "$(readlink "$2")" || {
 558                        # be super paranoid
 559                        if mkdir "$2".lock
 560                        then
 561                                rm -f "$2" &&
 562                                ln -s "$1" "$2" &&
 563                                rm -r "$2".lock
 564                        else
 565                                while test -d "$2".lock
 566                                do
 567                                        say "Waiting for lock on $2."
 568                                        sleep 1
 569                                done
 570                        fi
 571                }
 572        }
 573
 574        make_valgrind_symlink () {
 575                # handle only executables, unless they are shell libraries that
 576                # need to be in the exec-path.  We will just use "#!" as a
 577                # guess for a shell-script, since we have no idea what the user
 578                # may have configured as the shell path.
 579                test -x "$1" ||
 580                test "#!" = "$(head -c 2 <"$1")" ||
 581                return;
 582
 583                base=$(basename "$1")
 584                symlink_target=$GIT_BUILD_DIR/$base
 585                # do not override scripts
 586                if test -x "$symlink_target" &&
 587                    test ! -d "$symlink_target" &&
 588                    test "#!" != "$(head -c 2 < "$symlink_target")"
 589                then
 590                        symlink_target=../valgrind.sh
 591                fi
 592                case "$base" in
 593                *.sh|*.perl)
 594                        symlink_target=../unprocessed-script
 595                esac
 596                # create the link, or replace it if it is out of date
 597                make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 598        }
 599
 600        # override all git executables in TEST_DIRECTORY/..
 601        GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 602        mkdir -p "$GIT_VALGRIND"/bin
 603        for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 604        do
 605                make_valgrind_symlink $file
 606        done
 607        # special-case the mergetools loadables
 608        make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 609        OLDIFS=$IFS
 610        IFS=:
 611        for path in $PATH
 612        do
 613                ls "$path"/git-* 2> /dev/null |
 614                while read file
 615                do
 616                        make_valgrind_symlink "$file"
 617                done
 618        done
 619        IFS=$OLDIFS
 620        PATH=$GIT_VALGRIND/bin:$PATH
 621        GIT_EXEC_PATH=$GIT_VALGRIND/bin
 622        export GIT_VALGRIND
 623        GIT_VALGRIND_MODE="$valgrind"
 624        export GIT_VALGRIND_MODE
 625        GIT_VALGRIND_ENABLED=t
 626        test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 627        export GIT_VALGRIND_ENABLED
 628elif test -n "$GIT_TEST_INSTALLED"
 629then
 630        GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 631        error "Cannot run git from $GIT_TEST_INSTALLED."
 632        PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 633        GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 634else # normal case, use ../bin-wrappers only unless $with_dashes:
 635        git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 636        if ! test -x "$git_bin_dir/git"
 637        then
 638                if test -z "$with_dashes"
 639                then
 640                        say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 641                fi
 642                with_dashes=t
 643        fi
 644        PATH="$git_bin_dir:$PATH"
 645        GIT_EXEC_PATH=$GIT_BUILD_DIR
 646        if test -n "$with_dashes"
 647        then
 648                PATH="$GIT_BUILD_DIR:$PATH"
 649        fi
 650fi
 651GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 652unset GIT_CONFIG
 653GIT_CONFIG_NOSYSTEM=1
 654GIT_ATTR_NOSYSTEM=1
 655export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 656
 657if test -z "$GIT_TEST_CMP"
 658then
 659        if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 660        then
 661                GIT_TEST_CMP="$DIFF -c"
 662        else
 663                GIT_TEST_CMP="$DIFF -u"
 664        fi
 665fi
 666
 667GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 668export GITPERLLIB
 669test -d "$GIT_BUILD_DIR"/templates/blt || {
 670        error "You haven't built things yet, have you?"
 671}
 672
 673if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 674then
 675        echo >&2 'You need to build test-chmtime:'
 676        echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 677        exit 1
 678fi
 679
 680# Test repository
 681TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 682test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 683case "$TRASH_DIRECTORY" in
 684/*) ;; # absolute path is good
 685 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 686esac
 687test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 688rm -fr "$TRASH_DIRECTORY" || {
 689        GIT_EXIT_OK=t
 690        echo >&5 "FATAL: Cannot prepare test area"
 691        exit 1
 692}
 693
 694HOME="$TRASH_DIRECTORY"
 695export HOME
 696
 697if test -z "$TEST_NO_CREATE_REPO"
 698then
 699        test_create_repo "$TRASH_DIRECTORY"
 700else
 701        mkdir -p "$TRASH_DIRECTORY"
 702fi
 703# Use -P to resolve symlinks in our working directory so that the cwd
 704# in subprocesses like git equals our $PWD (for pathname comparisons).
 705cd -P "$TRASH_DIRECTORY" || exit 1
 706
 707this_test=${0##*/}
 708this_test=${this_test%%-*}
 709if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 710then
 711        say_color info >&3 "skipping test $this_test altogether"
 712        skip_all="skip all tests in $this_test"
 713        test_done
 714fi
 715
 716# Provide an implementation of the 'yes' utility
 717yes () {
 718        if test $# = 0
 719        then
 720                y=y
 721        else
 722                y="$*"
 723        fi
 724
 725        while echo "$y"
 726        do
 727                :
 728        done
 729}
 730
 731# Fix some commands on Windows
 732case $(uname -s) in
 733*MINGW*)
 734        # Windows has its own (incompatible) sort and find
 735        sort () {
 736                /usr/bin/sort "$@"
 737        }
 738        find () {
 739                /usr/bin/find "$@"
 740        }
 741        sum () {
 742                md5sum "$@"
 743        }
 744        # git sees Windows-style pwd
 745        pwd () {
 746                builtin pwd -W
 747        }
 748        # no POSIX permissions
 749        # backslashes in pathspec are converted to '/'
 750        # exec does not inherit the PID
 751        test_set_prereq MINGW
 752        test_set_prereq NOT_CYGWIN
 753        test_set_prereq SED_STRIPS_CR
 754        test_set_prereq GREP_STRIPS_CR
 755        GIT_TEST_CMP=mingw_test_cmp
 756        ;;
 757*CYGWIN*)
 758        test_set_prereq POSIXPERM
 759        test_set_prereq EXECKEEPSPID
 760        test_set_prereq NOT_MINGW
 761        test_set_prereq CYGWIN
 762        test_set_prereq SED_STRIPS_CR
 763        test_set_prereq GREP_STRIPS_CR
 764        ;;
 765*)
 766        test_set_prereq POSIXPERM
 767        test_set_prereq BSLASHPSPEC
 768        test_set_prereq EXECKEEPSPID
 769        test_set_prereq NOT_MINGW
 770        test_set_prereq NOT_CYGWIN
 771        ;;
 772esac
 773
 774( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 775test -z "$NO_PERL" && test_set_prereq PERL
 776test -z "$NO_PYTHON" && test_set_prereq PYTHON
 777test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 778test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 779
 780# Can we rely on git's output in the C locale?
 781if test -n "$GETTEXT_POISON"
 782then
 783        GIT_GETTEXT_POISON=YesPlease
 784        export GIT_GETTEXT_POISON
 785        test_set_prereq GETTEXT_POISON
 786else
 787        test_set_prereq C_LOCALE_OUTPUT
 788fi
 789
 790# Use this instead of test_cmp to compare files that contain expected and
 791# actual output from git commands that can be translated.  When running
 792# under GETTEXT_POISON this pretends that the command produced expected
 793# results.
 794test_i18ncmp () {
 795        test -n "$GETTEXT_POISON" || test_cmp "$@"
 796}
 797
 798# Use this instead of "grep expected-string actual" to see if the
 799# output from a git command that can be translated either contains an
 800# expected string, or does not contain an unwanted one.  When running
 801# under GETTEXT_POISON this pretends that the command produced expected
 802# results.
 803test_i18ngrep () {
 804        if test -n "$GETTEXT_POISON"
 805        then
 806            : # pretend success
 807        elif test "x!" = "x$1"
 808        then
 809                shift
 810                ! grep "$@"
 811        else
 812                grep "$@"
 813        fi
 814}
 815
 816test_lazy_prereq PIPE '
 817        # test whether the filesystem supports FIFOs
 818        case $(uname -s) in
 819        CYGWIN*)
 820                false
 821                ;;
 822        *)
 823                rm -f testfifo && mkfifo testfifo
 824                ;;
 825        esac
 826'
 827
 828test_lazy_prereq SYMLINKS '
 829        # test whether the filesystem supports symbolic links
 830        ln -s x y && test -h y
 831'
 832
 833test_lazy_prereq CASE_INSENSITIVE_FS '
 834        echo good >CamelCase &&
 835        echo bad >camelcase &&
 836        test "$(cat CamelCase)" != good
 837'
 838
 839test_lazy_prereq UTF8_NFD_TO_NFC '
 840        # check whether FS converts nfd unicode to nfc
 841        auml=$(printf "\303\244")
 842        aumlcdiar=$(printf "\141\314\210")
 843        >"$auml" &&
 844        case "$(echo *)" in
 845        "$aumlcdiar")
 846                true ;;
 847        *)
 848                false ;;
 849        esac
 850'
 851
 852test_lazy_prereq AUTOIDENT '
 853        sane_unset GIT_AUTHOR_NAME &&
 854        sane_unset GIT_AUTHOR_EMAIL &&
 855        git var GIT_AUTHOR_IDENT
 856'
 857
 858# When the tests are run as root, permission tests will report that
 859# things are writable when they shouldn't be.
 860test -w / || test_set_prereq SANITY
 861
 862GIT_UNZIP=${GIT_UNZIP:-unzip}
 863test_lazy_prereq UNZIP '
 864        "$GIT_UNZIP" -v
 865        test $? -ne 127
 866'