t/test-lib.sh

   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 # Test the binaries we have just built.  The tests are kept in
  19 # t/ subdirectory and are run in 'trash directory' subdirectory.
  20 if test -z "$TEST_DIRECTORY"
  21 then
  22         # We allow tests to override this, in case they want to run tests
  23         # outside of t/, e.g. for running tests on the test library
  24         # itself.
  25         TEST_DIRECTORY=$(pwd)
  26 else
  27         # ensure that TEST_DIRECTORY is an absolute path so that it
  28         # is valid even if the current working directory is changed
  29         TEST_DIRECTORY=$(cd "$TEST_DIRECTORY" && pwd) || exit 1
  30 fi
  31 if test -z "$TEST_OUTPUT_DIRECTORY"
  32 then
  33         # Similarly, override this to store the test-results subdir
  34         # elsewhere
  35         TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  36 fi
  37 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  38
  39 ################################################################
  40 # It appears that people try to run tests without building...
  41 "$GIT_BUILD_DIR/git" >/dev/null
  42 if test $? != 1
  43 then
  44         echo >&2 'error: you do not seem to have built git yet.'
  45         exit 1
  46 fi
  47
  48 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  49 export PERL_PATH SHELL_PATH
  50
  51 # if --tee was passed, write the output not only to the terminal, but
  52 # additionally to the file test-results/$BASENAME.out, too.
  53 case "$GIT_TEST_TEE_STARTED, $* " in
  54 done,*)
  55         # do not redirect again
  56         ;;
  57 *' --tee '*|*' --va'*)
  58         mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
  59         BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
  60         (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  61          echo $? > $BASE.exit) | tee $BASE.out
  62         test "$(cat $BASE.exit)" = 0
  63         exit
  64         ;;
  65 esac
  66
  67 # For repeatability, reset the environment to known value.
  68 # TERM is sanitized below, after saving color control sequences.
  69 LANG=C
  70 LC_ALL=C
  71 PAGER=cat
  72 TZ=UTC
  73 export LANG LC_ALL PAGER TZ
  74 EDITOR=:
  75 # A call to "unset" with no arguments causes at least Solaris 10
  76 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
  77 # deriving from the command substitution clustered with the other
  78 # ones.
  79 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  80         my @env = keys %ENV;
  81         my $ok = join("|", qw(
  82                 TRACE
  83                 DEBUG
  84                 USE_LOOKUP
  85                 TEST
  86                 .*_TEST
  87                 PROVE
  88                 VALGRIND
  89                 UNZIP
  90                 PERF_
  91                 CURL_VERBOSE
  92         ));
  93         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  94         print join("\n", @vars);
  95 ')
  96 unset XDG_CONFIG_HOME
  97 unset GITPERLLIB
  98 GIT_AUTHOR_EMAIL=author@example.com
  99 GIT_AUTHOR_NAME='A U Thor'
 100 GIT_COMMITTER_EMAIL=committer@example.com
 101 GIT_COMMITTER_NAME='C O Mitter'
 102 GIT_MERGE_VERBOSITY=5
 103 GIT_MERGE_AUTOEDIT=no
 104 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 105 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 106 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 107 export EDITOR
 108
 109 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 110 GIT_TRACE_BARE=1
 111 export GIT_TRACE_BARE
 112
 113 if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 114 then
 115         GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 116         export GIT_INDEX_VERSION
 117 fi
 118
 119 # Add libc MALLOC and MALLOC_PERTURB test
 120 # only if we are not executing the test with valgrind
 121 if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 122    test -n "$TEST_NO_MALLOC_CHECK"
 123 then
 124         setup_malloc_check () {
 125                 : nothing
 126         }
 127         teardown_malloc_check () {
 128                 : nothing
 129         }
 130 else
 131         setup_malloc_check () {
 132                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 133                 export MALLOC_CHECK_ MALLOC_PERTURB_
 134         }
 135         teardown_malloc_check () {
 136                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 137         }
 138 fi
 139
 140 : ${ASAN_OPTIONS=detect_leaks=0}
 141 export ASAN_OPTIONS
 142
 143 # Protect ourselves from common misconfiguration to export
 144 # CDPATH into the environment
 145 unset CDPATH
 146
 147 unset GREP_OPTIONS
 148 unset UNZIP
 149
 150 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 151 1|2|true)
 152         GIT_TRACE=4
 153         ;;
 154 esac
 155
 156 # Convenience
 157 #
 158 # A regexp to match 5 and 40 hexdigits
 159 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 160 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 161
 162 # Zero SHA-1
 163 _z40=0000000000000000000000000000000000000000
 164
 165 # Line feed
 166 LF='
 167 '
 168
 169 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 170 # when case-folding filenames
 171 u200c=$(printf '\342\200\214')
 172
 173 export _x05 _x40 _z40 LF u200c
 174
 175 # Each test should start with something like this, after copyright notices:
 176 #
 177 # test_description='Description of this test...
 178 # This test checks if command xyzzy does the right thing...
 179 # '
 180 # . ./test-lib.sh
 181 test "x$TERM" != "xdumb" && (
 182                 test -t 1 &&
 183                 tput bold >/dev/null 2>&1 &&
 184                 tput setaf 1 >/dev/null 2>&1 &&
 185                 tput sgr0 >/dev/null 2>&1
 186         ) &&
 187         color=t
 188
 189 while test "$#" -ne 0
 190 do
 191         case "$1" in
 192         -d|--d|--de|--deb|--debu|--debug)
 193                 debug=t; shift ;;
 194         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 195                 immediate=t; shift ;;
 196         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 197                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 198         -r)
 199                 shift; test "$#" -ne 0 || {
 200                         echo 'error: -r requires an argument' >&2;
 201                         exit 1;
 202                 }
 203                 run_list=$1; shift ;;
 204         --run=*)
 205                 run_list=$(expr "z$1" : 'z[^=]*=\(.*\)'); shift ;;
 206         -h|--h|--he|--hel|--help)
 207                 help=t; shift ;;
 208         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 209                 verbose=t; shift ;;
 210         --verbose-only=*)
 211                 verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 212                 shift ;;
 213         -q|--q|--qu|--qui|--quie|--quiet)
 214                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 215                 # passed without the ok/not ok details is always an error.
 216                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 217         --with-dashes)
 218                 with_dashes=t; shift ;;
 219         --no-color)
 220                 color=; shift ;;
 221         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 222                 valgrind=memcheck
 223                 shift ;;
 224         --valgrind=*)
 225                 valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
 226                 shift ;;
 227         --valgrind-only=*)
 228                 valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
 229                 shift ;;
 230         --tee)
 231                 shift ;; # was handled already
 232         --root=*)
 233                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 234                 shift ;;
 235         --chain-lint)
 236                 GIT_TEST_CHAIN_LINT=1
 237                 shift ;;
 238         --no-chain-lint)
 239                 GIT_TEST_CHAIN_LINT=0
 240                 shift ;;
 241         -x)
 242                 trace=t
 243                 verbose=t
 244                 shift ;;
 245         *)
 246                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 247         esac
 248 done
 249
 250 if test -n "$valgrind_only"
 251 then
 252         test -z "$valgrind" && valgrind=memcheck
 253         test -z "$verbose" && verbose_only="$valgrind_only"
 254 elif test -n "$valgrind"
 255 then
 256         verbose=t
 257 fi
 258
 259 if test -n "$color"
 260 then
 261         # Save the color control sequences now rather than run tput
 262         # each time say_color() is called.  This is done for two
 263         # reasons:
 264         #   * TERM will be changed to dumb
 265         #   * HOME will be changed to a temporary directory and tput
 266         #     might need to read ~/.terminfo from the original HOME
 267         #     directory to get the control sequences
 268         # Note:  This approach assumes the control sequences don't end
 269         # in a newline for any terminal of interest (command
 270         # substitutions strip trailing newlines).  Given that most
 271         # (all?) terminals in common use are related to ECMA-48, this
 272         # shouldn't be a problem.
 273         say_color_error=$(tput bold; tput setaf 1) # bold red
 274         say_color_skip=$(tput setaf 4) # blue
 275         say_color_warn=$(tput setaf 3) # brown/yellow
 276         say_color_pass=$(tput setaf 2) # green
 277         say_color_info=$(tput setaf 6) # cyan
 278         say_color_reset=$(tput sgr0)
 279         say_color_="" # no formatting for normal text
 280         say_color () {
 281                 test -z "$1" && test -n "$quiet" && return
 282                 eval "say_color_color=\$say_color_$1"
 283                 shift
 284                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 285         }
 286 else
 287         say_color() {
 288                 test -z "$1" && test -n "$quiet" && return
 289                 shift
 290                 printf "%s\n" "$*"
 291         }
 292 fi
 293
 294 TERM=dumb
 295 export TERM
 296
 297 error () {
 298         say_color error "error: $*"
 299         GIT_EXIT_OK=t
 300         exit 1
 301 }
 302
 303 say () {
 304         say_color info "$*"
 305 }
 306
 307 test "${test_description}" != "" ||
 308 error "Test script did not set test_description."
 309
 310 if test "$help" = "t"
 311 then
 312         printf '%s\n' "$test_description"
 313         exit 0
 314 fi
 315
 316 exec 5>&1
 317 exec 6<&0
 318 if test "$verbose" = "t"
 319 then
 320         exec 4>&2 3>&1
 321 else
 322         exec 4>/dev/null 3>/dev/null
 323 fi
 324
 325 # Send any "-x" output directly to stderr to avoid polluting tests
 326 # which capture stderr. We can do this unconditionally since it
 327 # has no effect if tracing isn't turned on.
 328 #
 329 # Note that this sets up the trace fd as soon as we assign the variable, so it
 330 # must come after the creation of descriptor 4 above. Likewise, we must never
 331 # unset this, as it has the side effect of closing descriptor 4, which we
 332 # use to show verbose tests to the user.
 333 #
 334 # Note also that we don't need or want to export it. The tracing is local to
 335 # this shell, and we would not want to influence any shells we exec.
 336 BASH_XTRACEFD=4
 337
 338 test_failure=0
 339 test_count=0
 340 test_fixed=0
 341 test_broken=0
 342 test_success=0
 343
 344 test_external_has_tap=0
 345
 346 die () {
 347         code=$?
 348         if test -n "$GIT_EXIT_OK"
 349         then
 350                 exit $code
 351         else
 352                 echo >&5 "FATAL: Unexpected exit with code $code"
 353                 exit 1
 354         fi
 355 }
 356
 357 GIT_EXIT_OK=
 358 trap 'die' EXIT
 359 trap 'exit $?' INT
 360
 361 # The user-facing functions are loaded from a separate file so that
 362 # test_perf subshells can have them too
 363 . "$TEST_DIRECTORY/test-lib-functions.sh"
 364
 365 # You are not expected to call test_ok_ and test_failure_ directly, use
 366 # the test_expect_* functions instead.
 367
 368 test_ok_ () {
 369         test_success=$(($test_success + 1))
 370         say_color "" "ok $test_count - $@"
 371 }
 372
 373 test_failure_ () {
 374         test_failure=$(($test_failure + 1))
 375         say_color error "not ok $test_count - $1"
 376         shift
 377         printf '%s\n' "$*" | sed -e 's/^/#      /'
 378         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 379 }
 380
 381 test_known_broken_ok_ () {
 382         test_fixed=$(($test_fixed+1))
 383         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 384 }
 385
 386 test_known_broken_failure_ () {
 387         test_broken=$(($test_broken+1))
 388         say_color warn "not ok $test_count - $@ # TODO known breakage"
 389 }
 390
 391 test_debug () {
 392         test "$debug" = "" || eval "$1"
 393 }
 394
 395 match_pattern_list () {
 396         arg="$1"
 397         shift
 398         test -z "$*" && return 1
 399         for pattern_
 400         do
 401                 case "$arg" in
 402                 $pattern_)
 403                         return 0
 404                 esac
 405         done
 406         return 1
 407 }
 408
 409 match_test_selector_list () {
 410         title="$1"
 411         shift
 412         arg="$1"
 413         shift
 414         test -z "$1" && return 0
 415
 416         # Both commas and whitespace are accepted as separators.
 417         OLDIFS=$IFS
 418         IFS='   ,'
 419         set -- $1
 420         IFS=$OLDIFS
 421
 422         # If the first selector is negative we include by default.
 423         include=
 424         case "$1" in
 425                 !*) include=t ;;
 426         esac
 427
 428         for selector
 429         do
 430                 orig_selector=$selector
 431
 432                 positive=t
 433                 case "$selector" in
 434                         !*)
 435                                 positive=
 436                                 selector=${selector##?}
 437                                 ;;
 438                 esac
 439
 440                 test -z "$selector" && continue
 441
 442                 case "$selector" in
 443                         *-*)
 444                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 445                                 then
 446                                         echo "error: $title: invalid non-numeric in range" \
 447                                                 "start: '$orig_selector'" >&2
 448                                         exit 1
 449                                 fi
 450                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 451                                 then
 452                                         echo "error: $title: invalid non-numeric in range" \
 453                                                 "end: '$orig_selector'" >&2
 454                                         exit 1
 455                                 fi
 456                                 ;;
 457                         *)
 458                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 459                                 then
 460                                         echo "error: $title: invalid non-numeric in test" \
 461                                                 "selector: '$orig_selector'" >&2
 462                                         exit 1
 463                                 fi
 464                 esac
 465
 466                 # Short cut for "obvious" cases
 467                 test -z "$include" && test -z "$positive" && continue
 468                 test -n "$include" && test -n "$positive" && continue
 469
 470                 case "$selector" in
 471                         -*)
 472                                 if test $arg -le ${selector#-}
 473                                 then
 474                                         include=$positive
 475                                 fi
 476                                 ;;
 477                         *-)
 478                                 if test $arg -ge ${selector%-}
 479                                 then
 480                                         include=$positive
 481                                 fi
 482                                 ;;
 483                         *-*)
 484                                 if test ${selector%%-*} -le $arg \
 485                                         && test $arg -le ${selector#*-}
 486                                 then
 487                                         include=$positive
 488                                 fi
 489                                 ;;
 490                         *)
 491                                 if test $arg -eq $selector
 492                                 then
 493                                         include=$positive
 494                                 fi
 495                                 ;;
 496                 esac
 497         done
 498
 499         test -n "$include"
 500 }
 501
 502 maybe_teardown_verbose () {
 503         test -z "$verbose_only" && return
 504         exec 4>/dev/null 3>/dev/null
 505         verbose=
 506 }
 507
 508 last_verbose=t
 509 maybe_setup_verbose () {
 510         test -z "$verbose_only" && return
 511         if match_pattern_list $test_count $verbose_only
 512         then
 513                 exec 4>&2 3>&1
 514                 # Emit a delimiting blank line when going from
 515                 # non-verbose to verbose.  Within verbose mode the
 516                 # delimiter is printed by test_expect_*.  The choice
 517                 # of the initial $last_verbose is such that before
 518                 # test 1, we do not print it.
 519                 test -z "$last_verbose" && echo >&3 ""
 520                 verbose=t
 521         else
 522                 exec 4>/dev/null 3>/dev/null
 523                 verbose=
 524         fi
 525         last_verbose=$verbose
 526 }
 527
 528 maybe_teardown_valgrind () {
 529         test -z "$GIT_VALGRIND" && return
 530         GIT_VALGRIND_ENABLED=
 531 }
 532
 533 maybe_setup_valgrind () {
 534         test -z "$GIT_VALGRIND" && return
 535         if test -z "$valgrind_only"
 536         then
 537                 GIT_VALGRIND_ENABLED=t
 538                 return
 539         fi
 540         GIT_VALGRIND_ENABLED=
 541         if match_pattern_list $test_count $valgrind_only
 542         then
 543                 GIT_VALGRIND_ENABLED=t
 544         fi
 545 }
 546
 547 # This is a separate function because some tests use
 548 # "return" to end a test_expect_success block early
 549 # (and we want to make sure we run any cleanup like
 550 # "set +x").
 551 test_eval_inner_ () {
 552         # Do not add anything extra (including LF) after '$*'
 553         eval "
 554                 test \"$trace\" = t && set -x
 555                 $*"
 556 }
 557
 558 test_eval_ () {
 559         # We run this block with stderr redirected to avoid extra cruft
 560         # during a "-x" trace. Once in "set -x" mode, we cannot prevent
 561         # the shell from printing the "set +x" to turn it off (nor the saving
 562         # of $? before that). But we can make sure that the output goes to
 563         # /dev/null.
 564         #
 565         # The test itself is run with stderr put back to &4 (so either to
 566         # /dev/null, or to the original stderr if --verbose was used).
 567         {
 568                 test_eval_inner_ "$@" </dev/null >&3 2>&4
 569                 test_eval_ret_=$?
 570                 if test "$trace" = t
 571                 then
 572                         set +x
 573                         if test "$test_eval_ret_" != 0
 574                         then
 575                                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 576                         fi
 577                 fi
 578         } 2>/dev/null
 579         return $test_eval_ret_
 580 }
 581
 582 test_run_ () {
 583         test_cleanup=:
 584         expecting_failure=$2
 585
 586         if test "${GIT_TEST_CHAIN_LINT:-0}" != 0; then
 587                 # 117 is magic because it is unlikely to match the exit
 588                 # code of other programs
 589                 test_eval_ "(exit 117) && $1"
 590                 if test "$?" != 117; then
 591                         error "bug in the test script: broken &&-chain: $1"
 592                 fi
 593         fi
 594
 595         setup_malloc_check
 596         test_eval_ "$1"
 597         eval_ret=$?
 598         teardown_malloc_check
 599
 600         if test -z "$immediate" || test $eval_ret = 0 ||
 601            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 602         then
 603                 setup_malloc_check
 604                 test_eval_ "$test_cleanup"
 605                 teardown_malloc_check
 606         fi
 607         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 608         then
 609                 echo ""
 610         fi
 611         return "$eval_ret"
 612 }
 613
 614 test_start_ () {
 615         test_count=$(($test_count+1))
 616         maybe_setup_verbose
 617         maybe_setup_valgrind
 618 }
 619
 620 test_finish_ () {
 621         echo >&3 ""
 622         maybe_teardown_valgrind
 623         maybe_teardown_verbose
 624 }
 625
 626 test_skip () {
 627         to_skip=
 628         skipped_reason=
 629         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 630         then
 631                 to_skip=t
 632                 skipped_reason="GIT_SKIP_TESTS"
 633         fi
 634         if test -z "$to_skip" && test -n "$test_prereq" &&
 635            ! test_have_prereq "$test_prereq"
 636         then
 637                 to_skip=t
 638
 639                 of_prereq=
 640                 if test "$missing_prereq" != "$test_prereq"
 641                 then
 642                         of_prereq=" of $test_prereq"
 643                 fi
 644                 skipped_reason="missing $missing_prereq${of_prereq}"
 645         fi
 646         if test -z "$to_skip" && test -n "$run_list" &&
 647                 ! match_test_selector_list '--run' $test_count "$run_list"
 648         then
 649                 to_skip=t
 650                 skipped_reason="--run"
 651         fi
 652
 653         case "$to_skip" in
 654         t)
 655                 say_color skip >&3 "skipping test: $@"
 656                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 657                 : true
 658                 ;;
 659         *)
 660                 false
 661                 ;;
 662         esac
 663 }
 664
 665 # stub; perf-lib overrides it
 666 test_at_end_hook_ () {
 667         :
 668 }
 669
 670 test_done () {
 671         GIT_EXIT_OK=t
 672
 673         if test -z "$HARNESS_ACTIVE"
 674         then
 675                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 676                 mkdir -p "$test_results_dir"
 677                 base=${0##*/}
 678                 test_results_path="$test_results_dir/${base%.sh}-$$.counts"
 679
 680                 cat >>"$test_results_path" <<-EOF
 681                 total $test_count
 682                 success $test_success
 683                 fixed $test_fixed
 684                 broken $test_broken
 685                 failed $test_failure
 686
 687                 EOF
 688         fi
 689
 690         if test "$test_fixed" != 0
 691         then
 692                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 693         fi
 694         if test "$test_broken" != 0
 695         then
 696                 say_color warn "# still have $test_broken known breakage(s)"
 697         fi
 698         if test "$test_broken" != 0 || test "$test_fixed" != 0
 699         then
 700                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 701                 msg="remaining $test_remaining test(s)"
 702         else
 703                 test_remaining=$test_count
 704                 msg="$test_count test(s)"
 705         fi
 706         case "$test_failure" in
 707         0)
 708                 # Maybe print SKIP message
 709                 if test -n "$skip_all" && test $test_count -gt 0
 710                 then
 711                         error "Can't use skip_all after running some tests"
 712                 fi
 713                 test -z "$skip_all" || skip_all=" # SKIP $skip_all"
 714
 715                 if test $test_external_has_tap -eq 0
 716                 then
 717                         if test $test_remaining -gt 0
 718                         then
 719                                 say_color pass "# passed all $msg"
 720                         fi
 721                         say "1..$test_count$skip_all"
 722                 fi
 723
 724                 test -d "$remove_trash" &&
 725                 cd "$(dirname "$remove_trash")" &&
 726                 rm -rf "$(basename "$remove_trash")"
 727
 728                 test_at_end_hook_
 729
 730                 exit 0 ;;
 731
 732         *)
 733                 if test $test_external_has_tap -eq 0
 734                 then
 735                         say_color error "# failed $test_failure among $msg"
 736                         say "1..$test_count"
 737                 fi
 738
 739                 exit 1 ;;
 740
 741         esac
 742 }
 743
 744 if test -n "$valgrind"
 745 then
 746         make_symlink () {
 747                 test -h "$2" &&
 748                 test "$1" = "$(readlink "$2")" || {
 749                         # be super paranoid
 750                         if mkdir "$2".lock
 751                         then
 752                                 rm -f "$2" &&
 753                                 ln -s "$1" "$2" &&
 754                                 rm -r "$2".lock
 755                         else
 756                                 while test -d "$2".lock
 757                                 do
 758                                         say "Waiting for lock on $2."
 759                                         sleep 1
 760                                 done
 761                         fi
 762                 }
 763         }
 764
 765         make_valgrind_symlink () {
 766                 # handle only executables, unless they are shell libraries that
 767                 # need to be in the exec-path.
 768                 test -x "$1" ||
 769                 test "# " = "$(head -c 2 <"$1")" ||
 770                 return;
 771
 772                 base=$(basename "$1")
 773                 symlink_target=$GIT_BUILD_DIR/$base
 774                 # do not override scripts
 775                 if test -x "$symlink_target" &&
 776                     test ! -d "$symlink_target" &&
 777                     test "#!" != "$(head -c 2 < "$symlink_target")"
 778                 then
 779                         symlink_target=../valgrind.sh
 780                 fi
 781                 case "$base" in
 782                 *.sh|*.perl)
 783                         symlink_target=../unprocessed-script
 784                 esac
 785                 # create the link, or replace it if it is out of date
 786                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 787         }
 788
 789         # override all git executables in TEST_DIRECTORY/..
 790         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 791         mkdir -p "$GIT_VALGRIND"/bin
 792         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
 793         do
 794                 make_valgrind_symlink $file
 795         done
 796         # special-case the mergetools loadables
 797         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 798         OLDIFS=$IFS
 799         IFS=:
 800         for path in $PATH
 801         do
 802                 ls "$path"/git-* 2> /dev/null |
 803                 while read file
 804                 do
 805                         make_valgrind_symlink "$file"
 806                 done
 807         done
 808         IFS=$OLDIFS
 809         PATH=$GIT_VALGRIND/bin:$PATH
 810         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 811         export GIT_VALGRIND
 812         GIT_VALGRIND_MODE="$valgrind"
 813         export GIT_VALGRIND_MODE
 814         GIT_VALGRIND_ENABLED=t
 815         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 816         export GIT_VALGRIND_ENABLED
 817 elif test -n "$GIT_TEST_INSTALLED"
 818 then
 819         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 820         error "Cannot run git from $GIT_TEST_INSTALLED."
 821         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 822         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 823 else # normal case, use ../bin-wrappers only unless $with_dashes:
 824         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 825         if ! test -x "$git_bin_dir/git"
 826         then
 827                 if test -z "$with_dashes"
 828                 then
 829                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 830                 fi
 831                 with_dashes=t
 832         fi
 833         PATH="$git_bin_dir:$PATH"
 834         GIT_EXEC_PATH=$GIT_BUILD_DIR
 835         if test -n "$with_dashes"
 836         then
 837                 PATH="$GIT_BUILD_DIR:$PATH"
 838         fi
 839 fi
 840 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 841 GIT_CONFIG_NOSYSTEM=1
 842 GIT_ATTR_NOSYSTEM=1
 843 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 844
 845 if test -z "$GIT_TEST_CMP"
 846 then
 847         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 848         then
 849                 GIT_TEST_CMP="$DIFF -c"
 850         else
 851                 GIT_TEST_CMP="$DIFF -u"
 852         fi
 853 fi
 854
 855 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 856 export GITPERLLIB
 857 test -d "$GIT_BUILD_DIR"/templates/blt || {
 858         error "You haven't built things yet, have you?"
 859 }
 860
 861 if ! test -x "$GIT_BUILD_DIR"/test-chmtime
 862 then
 863         echo >&2 'You need to build test-chmtime:'
 864         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
 865         exit 1
 866 fi
 867
 868 # Test repository
 869 TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 870 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 871 case "$TRASH_DIRECTORY" in
 872 /*) ;; # absolute path is good
 873  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 874 esac
 875 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 876 rm -fr "$TRASH_DIRECTORY" || {
 877         GIT_EXIT_OK=t
 878         echo >&5 "FATAL: Cannot prepare test area"
 879         exit 1
 880 }
 881
 882 HOME="$TRASH_DIRECTORY"
 883 GNUPGHOME="$HOME/gnupg-home-not-used"
 884 export HOME GNUPGHOME
 885
 886 if test -z "$TEST_NO_CREATE_REPO"
 887 then
 888         test_create_repo "$TRASH_DIRECTORY"
 889 else
 890         mkdir -p "$TRASH_DIRECTORY"
 891 fi
 892 # Use -P to resolve symlinks in our working directory so that the cwd
 893 # in subprocesses like git equals our $PWD (for pathname comparisons).
 894 cd -P "$TRASH_DIRECTORY" || exit 1
 895
 896 this_test=${0##*/}
 897 this_test=${this_test%%-*}
 898 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 899 then
 900         say_color info >&3 "skipping test $this_test altogether"
 901         skip_all="skip all tests in $this_test"
 902         test_done
 903 fi
 904
 905 # Provide an implementation of the 'yes' utility
 906 yes () {
 907         if test $# = 0
 908         then
 909                 y=y
 910         else
 911                 y="$*"
 912         fi
 913
 914         while echo "$y"
 915         do
 916                 :
 917         done
 918 }
 919
 920 # Fix some commands on Windows
 921 case $(uname -s) in
 922 *MINGW*)
 923         # Windows has its own (incompatible) sort and find
 924         sort () {
 925                 /usr/bin/sort "$@"
 926         }
 927         find () {
 928                 /usr/bin/find "$@"
 929         }
 930         sum () {
 931                 md5sum "$@"
 932         }
 933         # git sees Windows-style pwd
 934         pwd () {
 935                 builtin pwd -W
 936         }
 937         # no POSIX permissions
 938         # backslashes in pathspec are converted to '/'
 939         # exec does not inherit the PID
 940         test_set_prereq MINGW
 941         test_set_prereq NATIVE_CRLF
 942         test_set_prereq SED_STRIPS_CR
 943         test_set_prereq GREP_STRIPS_CR
 944         GIT_TEST_CMP=mingw_test_cmp
 945         ;;
 946 *CYGWIN*)
 947         test_set_prereq POSIXPERM
 948         test_set_prereq EXECKEEPSPID
 949         test_set_prereq CYGWIN
 950         test_set_prereq SED_STRIPS_CR
 951         test_set_prereq GREP_STRIPS_CR
 952         ;;
 953 *)
 954         test_set_prereq POSIXPERM
 955         test_set_prereq BSLASHPSPEC
 956         test_set_prereq EXECKEEPSPID
 957         ;;
 958 esac
 959
 960 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 961 test -z "$NO_PERL" && test_set_prereq PERL
 962 test -z "$NO_PYTHON" && test_set_prereq PYTHON
 963 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 964 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 965
 966 # Can we rely on git's output in the C locale?
 967 if test -n "$GETTEXT_POISON"
 968 then
 969         GIT_GETTEXT_POISON=YesPlease
 970         export GIT_GETTEXT_POISON
 971         test_set_prereq GETTEXT_POISON
 972 else
 973         test_set_prereq C_LOCALE_OUTPUT
 974 fi
 975
 976 # Use this instead of test_cmp to compare files that contain expected and
 977 # actual output from git commands that can be translated.  When running
 978 # under GETTEXT_POISON this pretends that the command produced expected
 979 # results.
 980 test_i18ncmp () {
 981         test -n "$GETTEXT_POISON" || test_cmp "$@"
 982 }
 983
 984 # Use this instead of "grep expected-string actual" to see if the
 985 # output from a git command that can be translated either contains an
 986 # expected string, or does not contain an unwanted one.  When running
 987 # under GETTEXT_POISON this pretends that the command produced expected
 988 # results.
 989 test_i18ngrep () {
 990         if test -n "$GETTEXT_POISON"
 991         then
 992             : # pretend success
 993         elif test "x!" = "x$1"
 994         then
 995                 shift
 996                 ! grep "$@"
 997         else
 998                 grep "$@"
 999         fi
1000 }
1001
1002 test_lazy_prereq PIPE '
1003         # test whether the filesystem supports FIFOs
1004         case $(uname -s) in
1005         CYGWIN*)
1006                 false
1007                 ;;
1008         *)
1009                 rm -f testfifo && mkfifo testfifo
1010                 ;;
1011         esac
1012 '
1013
1014 test_lazy_prereq SYMLINKS '
1015         # test whether the filesystem supports symbolic links
1016         ln -s x y && test -h y
1017 '
1018
1019 test_lazy_prereq FILEMODE '
1020         test "$(git config --bool core.filemode)" = true
1021 '
1022
1023 test_lazy_prereq CASE_INSENSITIVE_FS '
1024         echo good >CamelCase &&
1025         echo bad >camelcase &&
1026         test "$(cat CamelCase)" != good
1027 '
1028
1029 test_lazy_prereq UTF8_NFD_TO_NFC '
1030         # check whether FS converts nfd unicode to nfc
1031         auml=$(printf "\303\244")
1032         aumlcdiar=$(printf "\141\314\210")
1033         >"$auml" &&
1034         case "$(echo *)" in
1035         "$aumlcdiar")
1036                 true ;;
1037         *)
1038                 false ;;
1039         esac
1040 '
1041
1042 test_lazy_prereq AUTOIDENT '
1043         sane_unset GIT_AUTHOR_NAME &&
1044         sane_unset GIT_AUTHOR_EMAIL &&
1045         git var GIT_AUTHOR_IDENT
1046 '
1047
1048 test_lazy_prereq EXPENSIVE '
1049         test -n "$GIT_TEST_LONG"
1050 '
1051
1052 test_lazy_prereq USR_BIN_TIME '
1053         test -x /usr/bin/time
1054 '
1055
1056 test_lazy_prereq NOT_ROOT '
1057         uid=$(id -u) &&
1058         test "$uid" != 0
1059 '
1060
1061 # On a filesystem that lacks SANITY, a file can be deleted even if
1062 # the containing directory doesn't have write permissions, or a file
1063 # can be accessed even if the containing directory doesn't have read
1064 # or execute permissions, causing our tests that validate that Git
1065 # works sensibly in such situations.
1066 test_lazy_prereq SANITY '
1067         mkdir SANETESTD.1 SANETESTD.2 &&
1068
1069         chmod +w SANETESTD.1 SANETESTD.2 &&
1070         >SANETESTD.1/x 2>SANETESTD.2/x &&
1071         chmod -w SANETESTD.1 &&
1072         chmod -rx SANETESTD.2 ||
1073         error "bug in test sript: cannot prepare SANETESTD"
1074
1075         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1076         status=$?
1077
1078         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1079         rm -rf SANETESTD.1 SANETESTD.2 ||
1080         error "bug in test sript: cannot clean SANETESTD"
1081         return $status
1082 '
1083
1084 GIT_UNZIP=${GIT_UNZIP:-unzip}
1085 test_lazy_prereq UNZIP '
1086         "$GIT_UNZIP" -v
1087         test $? -ne 127
1088 '
1089
1090 run_with_limited_cmdline () {
1091         (ulimit -s 128 && "$@")
1092 }
1093
1094 test_lazy_prereq CMDLINE_LIMIT 'run_with_limited_cmdline true'