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$_x05"
 161
 162 # Zero SHA-1
 163 _z40=0000000000000000000000000000000000000000
 164
 165 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
 166 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
 167
 168 # Line feed
 169 LF='
 170 '
 171
 172 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 173 # when case-folding filenames
 174 u200c=$(printf '\342\200\214')
 175
 176 export _x05 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
 177
 178 # Each test should start with something like this, after copyright notices:
 179 #
 180 # test_description='Description of this test...
 181 # This test checks if command xyzzy does the right thing...
 182 # '
 183 # . ./test-lib.sh
 184 test "x$TERM" != "xdumb" && (
 185                 test -t 1 &&
 186                 tput bold >/dev/null 2>&1 &&
 187                 tput setaf 1 >/dev/null 2>&1 &&
 188                 tput sgr0 >/dev/null 2>&1
 189         ) &&
 190         color=t
 191
 192 while test "$#" -ne 0
 193 do
 194         case "$1" in
 195         -d|--d|--de|--deb|--debu|--debug)
 196                 debug=t; shift ;;
 197         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 198                 immediate=t; shift ;;
 199         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 200                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 201         -r)
 202                 shift; test "$#" -ne 0 || {
 203                         echo 'error: -r requires an argument' >&2;
 204                         exit 1;
 205                 }
 206                 run_list=$1; shift ;;
 207         --run=*)
 208                 run_list=${1#--*=}; shift ;;
 209         -h|--h|--he|--hel|--help)
 210                 help=t; shift ;;
 211         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 212                 verbose=t; shift ;;
 213         --verbose-only=*)
 214                 verbose_only=${1#--*=}
 215                 shift ;;
 216         -q|--q|--qu|--qui|--quie|--quiet)
 217                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 218                 # passed without the ok/not ok details is always an error.
 219                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 220         --with-dashes)
 221                 with_dashes=t; shift ;;
 222         --no-color)
 223                 color=; shift ;;
 224         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 225                 valgrind=memcheck
 226                 shift ;;
 227         --valgrind=*)
 228                 valgrind=${1#--*=}
 229                 shift ;;
 230         --valgrind-only=*)
 231                 valgrind_only=${1#--*=}
 232                 shift ;;
 233         --tee)
 234                 shift ;; # was handled already
 235         --root=*)
 236                 root=${1#--*=}
 237                 shift ;;
 238         --chain-lint)
 239                 GIT_TEST_CHAIN_LINT=1
 240                 shift ;;
 241         --no-chain-lint)
 242                 GIT_TEST_CHAIN_LINT=0
 243                 shift ;;
 244         -x)
 245                 trace=t
 246                 verbose=t
 247                 shift ;;
 248         *)
 249                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 250         esac
 251 done
 252
 253 if test -n "$valgrind_only"
 254 then
 255         test -z "$valgrind" && valgrind=memcheck
 256         test -z "$verbose" && verbose_only="$valgrind_only"
 257 elif test -n "$valgrind"
 258 then
 259         verbose=t
 260 fi
 261
 262 if test -n "$color"
 263 then
 264         # Save the color control sequences now rather than run tput
 265         # each time say_color() is called.  This is done for two
 266         # reasons:
 267         #   * TERM will be changed to dumb
 268         #   * HOME will be changed to a temporary directory and tput
 269         #     might need to read ~/.terminfo from the original HOME
 270         #     directory to get the control sequences
 271         # Note:  This approach assumes the control sequences don't end
 272         # in a newline for any terminal of interest (command
 273         # substitutions strip trailing newlines).  Given that most
 274         # (all?) terminals in common use are related to ECMA-48, this
 275         # shouldn't be a problem.
 276         say_color_error=$(tput bold; tput setaf 1) # bold red
 277         say_color_skip=$(tput setaf 4) # blue
 278         say_color_warn=$(tput setaf 3) # brown/yellow
 279         say_color_pass=$(tput setaf 2) # green
 280         say_color_info=$(tput setaf 6) # cyan
 281         say_color_reset=$(tput sgr0)
 282         say_color_="" # no formatting for normal text
 283         say_color () {
 284                 test -z "$1" && test -n "$quiet" && return
 285                 eval "say_color_color=\$say_color_$1"
 286                 shift
 287                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 288         }
 289 else
 290         say_color() {
 291                 test -z "$1" && test -n "$quiet" && return
 292                 shift
 293                 printf "%s\n" "$*"
 294         }
 295 fi
 296
 297 TERM=dumb
 298 export TERM
 299
 300 error () {
 301         say_color error "error: $*"
 302         GIT_EXIT_OK=t
 303         exit 1
 304 }
 305
 306 say () {
 307         say_color info "$*"
 308 }
 309
 310 test "${test_description}" != "" ||
 311 error "Test script did not set test_description."
 312
 313 if test "$help" = "t"
 314 then
 315         printf '%s\n' "$test_description"
 316         exit 0
 317 fi
 318
 319 exec 5>&1
 320 exec 6<&0
 321 if test "$verbose" = "t"
 322 then
 323         exec 4>&2 3>&1
 324 else
 325         exec 4>/dev/null 3>/dev/null
 326 fi
 327
 328 # Send any "-x" output directly to stderr to avoid polluting tests
 329 # which capture stderr. We can do this unconditionally since it
 330 # has no effect if tracing isn't turned on.
 331 #
 332 # Note that this sets up the trace fd as soon as we assign the variable, so it
 333 # must come after the creation of descriptor 4 above. Likewise, we must never
 334 # unset this, as it has the side effect of closing descriptor 4, which we
 335 # use to show verbose tests to the user.
 336 #
 337 # Note also that we don't need or want to export it. The tracing is local to
 338 # this shell, and we would not want to influence any shells we exec.
 339 BASH_XTRACEFD=4
 340
 341 test_failure=0
 342 test_count=0
 343 test_fixed=0
 344 test_broken=0
 345 test_success=0
 346
 347 test_external_has_tap=0
 348
 349 die () {
 350         code=$?
 351         if test -n "$GIT_EXIT_OK"
 352         then
 353                 exit $code
 354         else
 355                 echo >&5 "FATAL: Unexpected exit with code $code"
 356                 exit 1
 357         fi
 358 }
 359
 360 GIT_EXIT_OK=
 361 trap 'die' EXIT
 362 trap 'exit $?' INT
 363
 364 # The user-facing functions are loaded from a separate file so that
 365 # test_perf subshells can have them too
 366 . "$TEST_DIRECTORY/test-lib-functions.sh"
 367
 368 # You are not expected to call test_ok_ and test_failure_ directly, use
 369 # the test_expect_* functions instead.
 370
 371 test_ok_ () {
 372         test_success=$(($test_success + 1))
 373         say_color "" "ok $test_count - $@"
 374 }
 375
 376 test_failure_ () {
 377         test_failure=$(($test_failure + 1))
 378         say_color error "not ok $test_count - $1"
 379         shift
 380         printf '%s\n' "$*" | sed -e 's/^/#      /'
 381         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 382 }
 383
 384 test_known_broken_ok_ () {
 385         test_fixed=$(($test_fixed+1))
 386         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 387 }
 388
 389 test_known_broken_failure_ () {
 390         test_broken=$(($test_broken+1))
 391         say_color warn "not ok $test_count - $@ # TODO known breakage"
 392 }
 393
 394 test_debug () {
 395         test "$debug" = "" || eval "$1"
 396 }
 397
 398 match_pattern_list () {
 399         arg="$1"
 400         shift
 401         test -z "$*" && return 1
 402         for pattern_
 403         do
 404                 case "$arg" in
 405                 $pattern_)
 406                         return 0
 407                 esac
 408         done
 409         return 1
 410 }
 411
 412 match_test_selector_list () {
 413         title="$1"
 414         shift
 415         arg="$1"
 416         shift
 417         test -z "$1" && return 0
 418
 419         # Both commas and whitespace are accepted as separators.
 420         OLDIFS=$IFS
 421         IFS='   ,'
 422         set -- $1
 423         IFS=$OLDIFS
 424
 425         # If the first selector is negative we include by default.
 426         include=
 427         case "$1" in
 428                 !*) include=t ;;
 429         esac
 430
 431         for selector
 432         do
 433                 orig_selector=$selector
 434
 435                 positive=t
 436                 case "$selector" in
 437                         !*)
 438                                 positive=
 439                                 selector=${selector##?}
 440                                 ;;
 441                 esac
 442
 443                 test -z "$selector" && continue
 444
 445                 case "$selector" in
 446                         *-*)
 447                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 448                                 then
 449                                         echo "error: $title: invalid non-numeric in range" \
 450                                                 "start: '$orig_selector'" >&2
 451                                         exit 1
 452                                 fi
 453                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 454                                 then
 455                                         echo "error: $title: invalid non-numeric in range" \
 456                                                 "end: '$orig_selector'" >&2
 457                                         exit 1
 458                                 fi
 459                                 ;;
 460                         *)
 461                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 462                                 then
 463                                         echo "error: $title: invalid non-numeric in test" \
 464                                                 "selector: '$orig_selector'" >&2
 465                                         exit 1
 466                                 fi
 467                 esac
 468
 469                 # Short cut for "obvious" cases
 470                 test -z "$include" && test -z "$positive" && continue
 471                 test -n "$include" && test -n "$positive" && continue
 472
 473                 case "$selector" in
 474                         -*)
 475                                 if test $arg -le ${selector#-}
 476                                 then
 477                                         include=$positive
 478                                 fi
 479                                 ;;
 480                         *-)
 481                                 if test $arg -ge ${selector%-}
 482                                 then
 483                                         include=$positive
 484                                 fi
 485                                 ;;
 486                         *-*)
 487                                 if test ${selector%%-*} -le $arg \
 488                                         && test $arg -le ${selector#*-}
 489                                 then
 490                                         include=$positive
 491                                 fi
 492                                 ;;
 493                         *)
 494                                 if test $arg -eq $selector
 495                                 then
 496                                         include=$positive
 497                                 fi
 498                                 ;;
 499                 esac
 500         done
 501
 502         test -n "$include"
 503 }
 504
 505 maybe_teardown_verbose () {
 506         test -z "$verbose_only" && return
 507         exec 4>/dev/null 3>/dev/null
 508         verbose=
 509 }
 510
 511 last_verbose=t
 512 maybe_setup_verbose () {
 513         test -z "$verbose_only" && return
 514         if match_pattern_list $test_count $verbose_only
 515         then
 516                 exec 4>&2 3>&1
 517                 # Emit a delimiting blank line when going from
 518                 # non-verbose to verbose.  Within verbose mode the
 519                 # delimiter is printed by test_expect_*.  The choice
 520                 # of the initial $last_verbose is such that before
 521                 # test 1, we do not print it.
 522                 test -z "$last_verbose" && echo >&3 ""
 523                 verbose=t
 524         else
 525                 exec 4>/dev/null 3>/dev/null
 526                 verbose=
 527         fi
 528         last_verbose=$verbose
 529 }
 530
 531 maybe_teardown_valgrind () {
 532         test -z "$GIT_VALGRIND" && return
 533         GIT_VALGRIND_ENABLED=
 534 }
 535
 536 maybe_setup_valgrind () {
 537         test -z "$GIT_VALGRIND" && return
 538         if test -z "$valgrind_only"
 539         then
 540                 GIT_VALGRIND_ENABLED=t
 541                 return
 542         fi
 543         GIT_VALGRIND_ENABLED=
 544         if match_pattern_list $test_count $valgrind_only
 545         then
 546                 GIT_VALGRIND_ENABLED=t
 547         fi
 548 }
 549
 550 want_trace () {
 551         test "$trace" = t && test "$verbose" = t
 552 }
 553
 554 # This is a separate function because some tests use
 555 # "return" to end a test_expect_success block early
 556 # (and we want to make sure we run any cleanup like
 557 # "set +x").
 558 test_eval_inner_ () {
 559         # Do not add anything extra (including LF) after '$*'
 560         eval "
 561                 want_trace && set -x
 562                 $*"
 563 }
 564
 565 test_eval_ () {
 566         # We run this block with stderr redirected to avoid extra cruft
 567         # during a "-x" trace. Once in "set -x" mode, we cannot prevent
 568         # the shell from printing the "set +x" to turn it off (nor the saving
 569         # of $? before that). But we can make sure that the output goes to
 570         # /dev/null.
 571         #
 572         # The test itself is run with stderr put back to &4 (so either to
 573         # /dev/null, or to the original stderr if --verbose was used).
 574         {
 575                 test_eval_inner_ "$@" </dev/null >&3 2>&4
 576                 test_eval_ret_=$?
 577                 if want_trace
 578                 then
 579                         set +x
 580                         if test "$test_eval_ret_" != 0
 581                         then
 582                                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 583                         fi
 584                 fi
 585         } 2>/dev/null
 586         return $test_eval_ret_
 587 }
 588
 589 test_run_ () {
 590         test_cleanup=:
 591         expecting_failure=$2
 592
 593         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 594                 # turn off tracing for this test-eval, as it simply creates
 595                 # confusing noise in the "-x" output
 596                 trace_tmp=$trace
 597                 trace=
 598                 # 117 is magic because it is unlikely to match the exit
 599                 # code of other programs
 600                 test_eval_ "(exit 117) && $1"
 601                 if test "$?" != 117; then
 602                         error "bug in the test script: broken &&-chain: $1"
 603                 fi
 604                 trace=$trace_tmp
 605         fi
 606
 607         setup_malloc_check
 608         test_eval_ "$1"
 609         eval_ret=$?
 610         teardown_malloc_check
 611
 612         if test -z "$immediate" || test $eval_ret = 0 ||
 613            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 614         then
 615                 setup_malloc_check
 616                 test_eval_ "$test_cleanup"
 617                 teardown_malloc_check
 618         fi
 619         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 620         then
 621                 echo ""
 622         fi
 623         return "$eval_ret"
 624 }
 625
 626 test_start_ () {
 627         test_count=$(($test_count+1))
 628         maybe_setup_verbose
 629         maybe_setup_valgrind
 630 }
 631
 632 test_finish_ () {
 633         echo >&3 ""
 634         maybe_teardown_valgrind
 635         maybe_teardown_verbose
 636 }
 637
 638 test_skip () {
 639         to_skip=
 640         skipped_reason=
 641         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 642         then
 643                 to_skip=t
 644                 skipped_reason="GIT_SKIP_TESTS"
 645         fi
 646         if test -z "$to_skip" && test -n "$test_prereq" &&
 647            ! test_have_prereq "$test_prereq"
 648         then
 649                 to_skip=t
 650
 651                 of_prereq=
 652                 if test "$missing_prereq" != "$test_prereq"
 653                 then
 654                         of_prereq=" of $test_prereq"
 655                 fi
 656                 skipped_reason="missing $missing_prereq${of_prereq}"
 657         fi
 658         if test -z "$to_skip" && test -n "$run_list" &&
 659                 ! match_test_selector_list '--run' $test_count "$run_list"
 660         then
 661                 to_skip=t
 662                 skipped_reason="--run"
 663         fi
 664
 665         case "$to_skip" in
 666         t)
 667                 say_color skip >&3 "skipping test: $@"
 668                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 669                 : true
 670                 ;;
 671         *)
 672                 false
 673                 ;;
 674         esac
 675 }
 676
 677 # stub; perf-lib overrides it
 678 test_at_end_hook_ () {
 679         :
 680 }
 681
 682 test_done () {
 683         GIT_EXIT_OK=t
 684
 685         if test -z "$HARNESS_ACTIVE"
 686         then
 687                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 688                 mkdir -p "$test_results_dir"
 689                 base=${0##*/}
 690                 test_results_path="$test_results_dir/${base%.sh}.counts"
 691
 692                 cat >"$test_results_path" <<-EOF
 693                 total $test_count
 694                 success $test_success
 695                 fixed $test_fixed
 696                 broken $test_broken
 697                 failed $test_failure
 698
 699                 EOF
 700         fi
 701
 702         if test "$test_fixed" != 0
 703         then
 704                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 705         fi
 706         if test "$test_broken" != 0
 707         then
 708                 say_color warn "# still have $test_broken known breakage(s)"
 709         fi
 710         if test "$test_broken" != 0 || test "$test_fixed" != 0
 711         then
 712                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 713                 msg="remaining $test_remaining test(s)"
 714         else
 715                 test_remaining=$test_count
 716                 msg="$test_count test(s)"
 717         fi
 718         case "$test_failure" in
 719         0)
 720                 # Maybe print SKIP message
 721                 if test -n "$skip_all" && test $test_count -gt 0
 722                 then
 723                         error "Can't use skip_all after running some tests"
 724                 fi
 725                 test -z "$skip_all" || skip_all=" # SKIP $skip_all"
 726
 727                 if test $test_external_has_tap -eq 0
 728                 then
 729                         if test $test_remaining -gt 0
 730                         then
 731                                 say_color pass "# passed all $msg"
 732                         fi
 733                         say "1..$test_count$skip_all"
 734                 fi
 735
 736                 test -d "$remove_trash" &&
 737                 cd "$(dirname "$remove_trash")" &&
 738                 rm -rf "$(basename "$remove_trash")"
 739
 740                 test_at_end_hook_
 741
 742                 exit 0 ;;
 743
 744         *)
 745                 if test $test_external_has_tap -eq 0
 746                 then
 747                         say_color error "# failed $test_failure among $msg"
 748                         say "1..$test_count"
 749                 fi
 750
 751                 exit 1 ;;
 752
 753         esac
 754 }
 755
 756 if test -n "$valgrind"
 757 then
 758         make_symlink () {
 759                 test -h "$2" &&
 760                 test "$1" = "$(readlink "$2")" || {
 761                         # be super paranoid
 762                         if mkdir "$2".lock
 763                         then
 764                                 rm -f "$2" &&
 765                                 ln -s "$1" "$2" &&
 766                                 rm -r "$2".lock
 767                         else
 768                                 while test -d "$2".lock
 769                                 do
 770                                         say "Waiting for lock on $2."
 771                                         sleep 1
 772                                 done
 773                         fi
 774                 }
 775         }
 776
 777         make_valgrind_symlink () {
 778                 # handle only executables, unless they are shell libraries that
 779                 # need to be in the exec-path.
 780                 test -x "$1" ||
 781                 test "# " = "$(head -c 2 <"$1")" ||
 782                 return;
 783
 784                 base=$(basename "$1")
 785                 symlink_target=$GIT_BUILD_DIR/$base
 786                 # do not override scripts
 787                 if test -x "$symlink_target" &&
 788                     test ! -d "$symlink_target" &&
 789                     test "#!" != "$(head -c 2 < "$symlink_target")"
 790                 then
 791                         symlink_target=../valgrind.sh
 792                 fi
 793                 case "$base" in
 794                 *.sh|*.perl)
 795                         symlink_target=../unprocessed-script
 796                 esac
 797                 # create the link, or replace it if it is out of date
 798                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 799         }
 800
 801         # override all git executables in TEST_DIRECTORY/..
 802         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 803         mkdir -p "$GIT_VALGRIND"/bin
 804         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
 805         do
 806                 make_valgrind_symlink $file
 807         done
 808         # special-case the mergetools loadables
 809         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 810         OLDIFS=$IFS
 811         IFS=:
 812         for path in $PATH
 813         do
 814                 ls "$path"/git-* 2> /dev/null |
 815                 while read file
 816                 do
 817                         make_valgrind_symlink "$file"
 818                 done
 819         done
 820         IFS=$OLDIFS
 821         PATH=$GIT_VALGRIND/bin:$PATH
 822         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 823         export GIT_VALGRIND
 824         GIT_VALGRIND_MODE="$valgrind"
 825         export GIT_VALGRIND_MODE
 826         GIT_VALGRIND_ENABLED=t
 827         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 828         export GIT_VALGRIND_ENABLED
 829 elif test -n "$GIT_TEST_INSTALLED"
 830 then
 831         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 832         error "Cannot run git from $GIT_TEST_INSTALLED."
 833         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 834         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 835 else # normal case, use ../bin-wrappers only unless $with_dashes:
 836         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 837         if ! test -x "$git_bin_dir/git"
 838         then
 839                 if test -z "$with_dashes"
 840                 then
 841                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 842                 fi
 843                 with_dashes=t
 844         fi
 845         PATH="$git_bin_dir:$PATH"
 846         GIT_EXEC_PATH=$GIT_BUILD_DIR
 847         if test -n "$with_dashes"
 848         then
 849                 PATH="$GIT_BUILD_DIR:$PATH"
 850         fi
 851 fi
 852 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 853 GIT_CONFIG_NOSYSTEM=1
 854 GIT_ATTR_NOSYSTEM=1
 855 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 856
 857 if test -z "$GIT_TEST_CMP"
 858 then
 859         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 860         then
 861                 GIT_TEST_CMP="$DIFF -c"
 862         else
 863                 GIT_TEST_CMP="$DIFF -u"
 864         fi
 865 fi
 866
 867 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 868 export GITPERLLIB
 869 test -d "$GIT_BUILD_DIR"/templates/blt || {
 870         error "You haven't built things yet, have you?"
 871 }
 872
 873 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-chmtime
 874 then
 875         echo >&2 'You need to build test-chmtime:'
 876         echo >&2 'Run "make t/helper/test-chmtime" in the source (toplevel) directory'
 877         exit 1
 878 fi
 879
 880 # Test repository
 881 TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 882 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 883 case "$TRASH_DIRECTORY" in
 884 /*) ;; # absolute path is good
 885  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 886 esac
 887 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 888 rm -fr "$TRASH_DIRECTORY" || {
 889         GIT_EXIT_OK=t
 890         echo >&5 "FATAL: Cannot prepare test area"
 891         exit 1
 892 }
 893
 894 HOME="$TRASH_DIRECTORY"
 895 GNUPGHOME="$HOME/gnupg-home-not-used"
 896 export HOME GNUPGHOME
 897
 898 if test -z "$TEST_NO_CREATE_REPO"
 899 then
 900         test_create_repo "$TRASH_DIRECTORY"
 901 else
 902         mkdir -p "$TRASH_DIRECTORY"
 903 fi
 904 # Use -P to resolve symlinks in our working directory so that the cwd
 905 # in subprocesses like git equals our $PWD (for pathname comparisons).
 906 cd -P "$TRASH_DIRECTORY" || exit 1
 907
 908 this_test=${0##*/}
 909 this_test=${this_test%%-*}
 910 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 911 then
 912         say_color info >&3 "skipping test $this_test altogether"
 913         skip_all="skip all tests in $this_test"
 914         test_done
 915 fi
 916
 917 # Provide an implementation of the 'yes' utility
 918 yes () {
 919         if test $# = 0
 920         then
 921                 y=y
 922         else
 923                 y="$*"
 924         fi
 925
 926         i=0
 927         while test $i -lt 99
 928         do
 929                 echo "$y"
 930                 i=$(($i+1))
 931         done
 932 }
 933
 934 # Fix some commands on Windows
 935 case $(uname -s) in
 936 *MINGW*)
 937         # Windows has its own (incompatible) sort and find
 938         sort () {
 939                 /usr/bin/sort "$@"
 940         }
 941         find () {
 942                 /usr/bin/find "$@"
 943         }
 944         sum () {
 945                 md5sum "$@"
 946         }
 947         # git sees Windows-style pwd
 948         pwd () {
 949                 builtin pwd -W
 950         }
 951         # no POSIX permissions
 952         # backslashes in pathspec are converted to '/'
 953         # exec does not inherit the PID
 954         test_set_prereq MINGW
 955         test_set_prereq NATIVE_CRLF
 956         test_set_prereq SED_STRIPS_CR
 957         test_set_prereq GREP_STRIPS_CR
 958         GIT_TEST_CMP=mingw_test_cmp
 959         ;;
 960 *CYGWIN*)
 961         test_set_prereq POSIXPERM
 962         test_set_prereq EXECKEEPSPID
 963         test_set_prereq CYGWIN
 964         test_set_prereq SED_STRIPS_CR
 965         test_set_prereq GREP_STRIPS_CR
 966         ;;
 967 *)
 968         test_set_prereq POSIXPERM
 969         test_set_prereq BSLASHPSPEC
 970         test_set_prereq EXECKEEPSPID
 971         ;;
 972 esac
 973
 974 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 975 test -z "$NO_PERL" && test_set_prereq PERL
 976 test -z "$NO_PYTHON" && test_set_prereq PYTHON
 977 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 978 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 979
 980 # Can we rely on git's output in the C locale?
 981 if test -n "$GETTEXT_POISON"
 982 then
 983         GIT_GETTEXT_POISON=YesPlease
 984         export GIT_GETTEXT_POISON
 985         test_set_prereq GETTEXT_POISON
 986 else
 987         test_set_prereq C_LOCALE_OUTPUT
 988 fi
 989
 990 # Use this instead of test_cmp to compare files that contain expected and
 991 # actual output from git commands that can be translated.  When running
 992 # under GETTEXT_POISON this pretends that the command produced expected
 993 # results.
 994 test_i18ncmp () {
 995         test -n "$GETTEXT_POISON" || test_cmp "$@"
 996 }
 997
 998 # Use this instead of "grep expected-string actual" to see if the
 999 # output from a git command that can be translated either contains an
1000 # expected string, or does not contain an unwanted one.  When running
1001 # under GETTEXT_POISON this pretends that the command produced expected
1002 # results.
1003 test_i18ngrep () {
1004         if test -n "$GETTEXT_POISON"
1005         then
1006             : # pretend success
1007         elif test "x!" = "x$1"
1008         then
1009                 shift
1010                 ! grep "$@"
1011         else
1012                 grep "$@"
1013         fi
1014 }
1015
1016 test_lazy_prereq PIPE '
1017         # test whether the filesystem supports FIFOs
1018         case $(uname -s) in
1019         CYGWIN*|MINGW*)
1020                 false
1021                 ;;
1022         *)
1023                 rm -f testfifo && mkfifo testfifo
1024                 ;;
1025         esac
1026 '
1027
1028 test_lazy_prereq SYMLINKS '
1029         # test whether the filesystem supports symbolic links
1030         ln -s x y && test -h y
1031 '
1032
1033 test_lazy_prereq FILEMODE '
1034         test "$(git config --bool core.filemode)" = true
1035 '
1036
1037 test_lazy_prereq CASE_INSENSITIVE_FS '
1038         echo good >CamelCase &&
1039         echo bad >camelcase &&
1040         test "$(cat CamelCase)" != good
1041 '
1042
1043 test_lazy_prereq UTF8_NFD_TO_NFC '
1044         # check whether FS converts nfd unicode to nfc
1045         auml=$(printf "\303\244")
1046         aumlcdiar=$(printf "\141\314\210")
1047         >"$auml" &&
1048         case "$(echo *)" in
1049         "$aumlcdiar")
1050                 true ;;
1051         *)
1052                 false ;;
1053         esac
1054 '
1055
1056 test_lazy_prereq AUTOIDENT '
1057         sane_unset GIT_AUTHOR_NAME &&
1058         sane_unset GIT_AUTHOR_EMAIL &&
1059         git var GIT_AUTHOR_IDENT
1060 '
1061
1062 test_lazy_prereq EXPENSIVE '
1063         test -n "$GIT_TEST_LONG"
1064 '
1065
1066 test_lazy_prereq USR_BIN_TIME '
1067         test -x /usr/bin/time
1068 '
1069
1070 test_lazy_prereq NOT_ROOT '
1071         uid=$(id -u) &&
1072         test "$uid" != 0
1073 '
1074
1075 # SANITY is about "can you correctly predict what the filesystem would
1076 # do by only looking at the permission bits of the files and
1077 # directories?"  A typical example of !SANITY is running the test
1078 # suite as root, where a test may expect "chmod -r file && cat file"
1079 # to fail because file is supposed to be unreadable after a successful
1080 # chmod.  In an environment (i.e. combination of what filesystem is
1081 # being used and who is running the tests) that lacks SANITY, you may
1082 # be able to delete or create a file when the containing directory
1083 # doesn't have write permissions, or access a file even if the
1084 # containing directory doesn't have read or execute permissions.
1085
1086 test_lazy_prereq SANITY '
1087         mkdir SANETESTD.1 SANETESTD.2 &&
1088
1089         chmod +w SANETESTD.1 SANETESTD.2 &&
1090         >SANETESTD.1/x 2>SANETESTD.2/x &&
1091         chmod -w SANETESTD.1 &&
1092         chmod -r SANETESTD.1/x &&
1093         chmod -rx SANETESTD.2 ||
1094         error "bug in test sript: cannot prepare SANETESTD"
1095
1096         ! test -r SANETESTD.1/x &&
1097         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1098         status=$?
1099
1100         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1101         rm -rf SANETESTD.1 SANETESTD.2 ||
1102         error "bug in test sript: cannot clean SANETESTD"
1103         return $status
1104 '
1105
1106 GIT_UNZIP=${GIT_UNZIP:-unzip}
1107 test_lazy_prereq UNZIP '
1108         "$GIT_UNZIP" -v
1109         test $? -ne 127
1110 '
1111
1112 run_with_limited_cmdline () {
1113         (ulimit -s 128 && "$@")
1114 }
1115
1116 test_lazy_prereq CMDLINE_LIMIT 'run_with_limited_cmdline true'
1117
1118 build_option () {
1119         git version --build-options |
1120         sed -ne "s/^$1: //p"
1121 }
1122
1123 test_lazy_prereq LONG_IS_64BIT '
1124         test 8 -le "$(build_option sizeof-long)"
1125 '