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 # If we were built with ASAN, it may complain about leaks
  40 # of program-lifetime variables. Disable it by default to lower
  41 # the noise level. This needs to happen at the start of the script,
  42 # before we even do our "did we build git yet" check (since we don't
  43 # want that one to complain to stderr).
  44 : ${ASAN_OPTIONS=detect_leaks=0:abort_on_error=1}
  45 export ASAN_OPTIONS
  46
  47 # If LSAN is in effect we _do_ want leak checking, but we still
  48 # want to abort so that we notice the problems.
  49 : ${LSAN_OPTIONS=abort_on_error=1}
  50 export LSAN_OPTIONS
  51
  52 ################################################################
  53 # It appears that people try to run tests without building...
  54 "$GIT_BUILD_DIR/git" >/dev/null
  55 if test $? != 1
  56 then
  57         echo >&2 'error: you do not seem to have built git yet.'
  58         exit 1
  59 fi
  60
  61 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  62 export PERL_PATH SHELL_PATH
  63
  64 # if --tee was passed, write the output not only to the terminal, but
  65 # additionally to the file test-results/$BASENAME.out, too.
  66 case "$GIT_TEST_TEE_STARTED, $* " in
  67 done,*)
  68         # do not redirect again
  69         ;;
  70 *' --tee '*|*' --va'*|*' --verbose-log '*)
  71         mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
  72         BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
  73
  74         # Make this filename available to the sub-process in case it is using
  75         # --verbose-log.
  76         GIT_TEST_TEE_OUTPUT_FILE=$BASE.out
  77         export GIT_TEST_TEE_OUTPUT_FILE
  78
  79         # Truncate before calling "tee -a" to get rid of the results
  80         # from any previous runs.
  81         >"$GIT_TEST_TEE_OUTPUT_FILE"
  82
  83         (GIT_TEST_TEE_STARTED=done ${TEST_SHELL_PATH} "$0" "$@" 2>&1;
  84          echo $? >"$BASE.exit") | tee -a "$GIT_TEST_TEE_OUTPUT_FILE"
  85         test "$(cat "$BASE.exit")" = 0
  86         exit
  87         ;;
  88 esac
  89
  90 # For repeatability, reset the environment to known value.
  91 # TERM is sanitized below, after saving color control sequences.
  92 LANG=C
  93 LC_ALL=C
  94 PAGER=cat
  95 TZ=UTC
  96 export LANG LC_ALL PAGER TZ
  97 EDITOR=:
  98 # A call to "unset" with no arguments causes at least Solaris 10
  99 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
 100 # deriving from the command substitution clustered with the other
 101 # ones.
 102 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
 103         my @env = keys %ENV;
 104         my $ok = join("|", qw(
 105                 TRACE
 106                 DEBUG
 107                 TEST
 108                 .*_TEST
 109                 PROVE
 110                 VALGRIND
 111                 UNZIP
 112                 PERF_
 113                 CURL_VERBOSE
 114                 TRACE_CURL
 115         ));
 116         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 117         print join("\n", @vars);
 118 ')
 119 unset XDG_CACHE_HOME
 120 unset XDG_CONFIG_HOME
 121 unset GITPERLLIB
 122 GIT_AUTHOR_EMAIL=author@example.com
 123 GIT_AUTHOR_NAME='A U Thor'
 124 GIT_COMMITTER_EMAIL=committer@example.com
 125 GIT_COMMITTER_NAME='C O Mitter'
 126 GIT_MERGE_VERBOSITY=5
 127 GIT_MERGE_AUTOEDIT=no
 128 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 129 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 130 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 131 export EDITOR
 132
 133 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 134 GIT_TRACE_BARE=1
 135 export GIT_TRACE_BARE
 136
 137 if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 138 then
 139         GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 140         export GIT_INDEX_VERSION
 141 fi
 142
 143 # Add libc MALLOC and MALLOC_PERTURB test
 144 # only if we are not executing the test with valgrind
 145 if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 146    test -n "$TEST_NO_MALLOC_CHECK"
 147 then
 148         setup_malloc_check () {
 149                 : nothing
 150         }
 151         teardown_malloc_check () {
 152                 : nothing
 153         }
 154 else
 155         setup_malloc_check () {
 156                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 157                 export MALLOC_CHECK_ MALLOC_PERTURB_
 158         }
 159         teardown_malloc_check () {
 160                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 161         }
 162 fi
 163
 164 # Protect ourselves from common misconfiguration to export
 165 # CDPATH into the environment
 166 unset CDPATH
 167
 168 unset GREP_OPTIONS
 169 unset UNZIP
 170
 171 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 172 1|2|true)
 173         GIT_TRACE=4
 174         ;;
 175 esac
 176
 177 # Convenience
 178 #
 179 # A regexp to match 5, 35 and 40 hexdigits
 180 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 181 _x35="$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 182 _x40="$_x35$_x05"
 183
 184 # Zero SHA-1
 185 _z40=0000000000000000000000000000000000000000
 186
 187 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
 188 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
 189
 190 # Line feed
 191 LF='
 192 '
 193
 194 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 195 # when case-folding filenames
 196 u200c=$(printf '\342\200\214')
 197
 198 export _x05 _x35 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
 199
 200 # Each test should start with something like this, after copyright notices:
 201 #
 202 # test_description='Description of this test...
 203 # This test checks if command xyzzy does the right thing...
 204 # '
 205 # . ./test-lib.sh
 206 test "x$TERM" != "xdumb" && (
 207                 test -t 1 &&
 208                 tput bold >/dev/null 2>&1 &&
 209                 tput setaf 1 >/dev/null 2>&1 &&
 210                 tput sgr0 >/dev/null 2>&1
 211         ) &&
 212         color=t
 213
 214 while test "$#" -ne 0
 215 do
 216         case "$1" in
 217         -d|--d|--de|--deb|--debu|--debug)
 218                 debug=t; shift ;;
 219         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 220                 immediate=t; shift ;;
 221         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 222                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 223         -r)
 224                 shift; test "$#" -ne 0 || {
 225                         echo 'error: -r requires an argument' >&2;
 226                         exit 1;
 227                 }
 228                 run_list=$1; shift ;;
 229         --run=*)
 230                 run_list=${1#--*=}; shift ;;
 231         -h|--h|--he|--hel|--help)
 232                 help=t; shift ;;
 233         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 234                 verbose=t; shift ;;
 235         --verbose-only=*)
 236                 verbose_only=${1#--*=}
 237                 shift ;;
 238         -q|--q|--qu|--qui|--quie|--quiet)
 239                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 240                 # passed without the ok/not ok details is always an error.
 241                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 242         --with-dashes)
 243                 with_dashes=t; shift ;;
 244         --no-color)
 245                 color=; shift ;;
 246         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 247                 valgrind=memcheck
 248                 shift ;;
 249         --valgrind=*)
 250                 valgrind=${1#--*=}
 251                 shift ;;
 252         --valgrind-only=*)
 253                 valgrind_only=${1#--*=}
 254                 shift ;;
 255         --tee)
 256                 shift ;; # was handled already
 257         --root=*)
 258                 root=${1#--*=}
 259                 shift ;;
 260         --chain-lint)
 261                 GIT_TEST_CHAIN_LINT=1
 262                 shift ;;
 263         --no-chain-lint)
 264                 GIT_TEST_CHAIN_LINT=0
 265                 shift ;;
 266         -x)
 267                 trace=t
 268                 shift ;;
 269         --verbose-log)
 270                 verbose_log=t
 271                 shift ;;
 272         *)
 273                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 274         esac
 275 done
 276
 277 if test -n "$valgrind_only"
 278 then
 279         test -z "$valgrind" && valgrind=memcheck
 280         test -z "$verbose" && verbose_only="$valgrind_only"
 281 elif test -n "$valgrind"
 282 then
 283         test -z "$verbose_log" && verbose=t
 284 fi
 285
 286 if test -n "$trace" && test -z "$verbose_log"
 287 then
 288         verbose=t
 289 fi
 290
 291 if test -n "$color"
 292 then
 293         # Save the color control sequences now rather than run tput
 294         # each time say_color() is called.  This is done for two
 295         # reasons:
 296         #   * TERM will be changed to dumb
 297         #   * HOME will be changed to a temporary directory and tput
 298         #     might need to read ~/.terminfo from the original HOME
 299         #     directory to get the control sequences
 300         # Note:  This approach assumes the control sequences don't end
 301         # in a newline for any terminal of interest (command
 302         # substitutions strip trailing newlines).  Given that most
 303         # (all?) terminals in common use are related to ECMA-48, this
 304         # shouldn't be a problem.
 305         say_color_error=$(tput bold; tput setaf 1) # bold red
 306         say_color_skip=$(tput setaf 4) # blue
 307         say_color_warn=$(tput setaf 3) # brown/yellow
 308         say_color_pass=$(tput setaf 2) # green
 309         say_color_info=$(tput setaf 6) # cyan
 310         say_color_reset=$(tput sgr0)
 311         say_color_="" # no formatting for normal text
 312         say_color () {
 313                 test -z "$1" && test -n "$quiet" && return
 314                 eval "say_color_color=\$say_color_$1"
 315                 shift
 316                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 317         }
 318 else
 319         say_color() {
 320                 test -z "$1" && test -n "$quiet" && return
 321                 shift
 322                 printf "%s\n" "$*"
 323         }
 324 fi
 325
 326 TERM=dumb
 327 export TERM
 328
 329 error () {
 330         say_color error "error: $*"
 331         GIT_EXIT_OK=t
 332         exit 1
 333 }
 334
 335 say () {
 336         say_color info "$*"
 337 }
 338
 339 if test -n "$HARNESS_ACTIVE"
 340 then
 341         if test "$verbose" = t || test -n "$verbose_only"
 342         then
 343                 printf 'Bail out! %s\n' \
 344                  'verbose mode forbidden under TAP harness; try --verbose-log'
 345                 exit 1
 346         fi
 347 fi
 348
 349 test "${test_description}" != "" ||
 350 error "Test script did not set test_description."
 351
 352 if test "$help" = "t"
 353 then
 354         printf '%s\n' "$test_description"
 355         exit 0
 356 fi
 357
 358 exec 5>&1
 359 exec 6<&0
 360 exec 7>&2
 361 if test "$verbose_log" = "t"
 362 then
 363         exec 3>>"$GIT_TEST_TEE_OUTPUT_FILE" 4>&3
 364 elif test "$verbose" = "t"
 365 then
 366         exec 4>&2 3>&1
 367 else
 368         exec 4>/dev/null 3>/dev/null
 369 fi
 370
 371 # Send any "-x" output directly to stderr to avoid polluting tests
 372 # which capture stderr. We can do this unconditionally since it
 373 # has no effect if tracing isn't turned on.
 374 #
 375 # Note that this sets up the trace fd as soon as we assign the variable, so it
 376 # must come after the creation of descriptor 4 above. Likewise, we must never
 377 # unset this, as it has the side effect of closing descriptor 4, which we
 378 # use to show verbose tests to the user.
 379 #
 380 # Note also that we don't need or want to export it. The tracing is local to
 381 # this shell, and we would not want to influence any shells we exec.
 382 BASH_XTRACEFD=4
 383
 384 test_failure=0
 385 test_count=0
 386 test_fixed=0
 387 test_broken=0
 388 test_success=0
 389
 390 test_external_has_tap=0
 391
 392 die () {
 393         code=$?
 394         if test -n "$GIT_EXIT_OK"
 395         then
 396                 exit $code
 397         else
 398                 echo >&5 "FATAL: Unexpected exit with code $code"
 399                 exit 1
 400         fi
 401 }
 402
 403 GIT_EXIT_OK=
 404 trap 'die' EXIT
 405 trap 'exit $?' INT
 406
 407 # The user-facing functions are loaded from a separate file so that
 408 # test_perf subshells can have them too
 409 . "$TEST_DIRECTORY/test-lib-functions.sh"
 410
 411 # You are not expected to call test_ok_ and test_failure_ directly, use
 412 # the test_expect_* functions instead.
 413
 414 test_ok_ () {
 415         test_success=$(($test_success + 1))
 416         say_color "" "ok $test_count - $@"
 417 }
 418
 419 test_failure_ () {
 420         test_failure=$(($test_failure + 1))
 421         say_color error "not ok $test_count - $1"
 422         shift
 423         printf '%s\n' "$*" | sed -e 's/^/#      /'
 424         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 425 }
 426
 427 test_known_broken_ok_ () {
 428         test_fixed=$(($test_fixed+1))
 429         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 430 }
 431
 432 test_known_broken_failure_ () {
 433         test_broken=$(($test_broken+1))
 434         say_color warn "not ok $test_count - $@ # TODO known breakage"
 435 }
 436
 437 test_debug () {
 438         test "$debug" = "" || eval "$1"
 439 }
 440
 441 match_pattern_list () {
 442         arg="$1"
 443         shift
 444         test -z "$*" && return 1
 445         for pattern_
 446         do
 447                 case "$arg" in
 448                 $pattern_)
 449                         return 0
 450                 esac
 451         done
 452         return 1
 453 }
 454
 455 match_test_selector_list () {
 456         title="$1"
 457         shift
 458         arg="$1"
 459         shift
 460         test -z "$1" && return 0
 461
 462         # Both commas and whitespace are accepted as separators.
 463         OLDIFS=$IFS
 464         IFS='   ,'
 465         set -- $1
 466         IFS=$OLDIFS
 467
 468         # If the first selector is negative we include by default.
 469         include=
 470         case "$1" in
 471                 !*) include=t ;;
 472         esac
 473
 474         for selector
 475         do
 476                 orig_selector=$selector
 477
 478                 positive=t
 479                 case "$selector" in
 480                         !*)
 481                                 positive=
 482                                 selector=${selector##?}
 483                                 ;;
 484                 esac
 485
 486                 test -z "$selector" && continue
 487
 488                 case "$selector" in
 489                         *-*)
 490                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 491                                 then
 492                                         echo "error: $title: invalid non-numeric in range" \
 493                                                 "start: '$orig_selector'" >&2
 494                                         exit 1
 495                                 fi
 496                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 497                                 then
 498                                         echo "error: $title: invalid non-numeric in range" \
 499                                                 "end: '$orig_selector'" >&2
 500                                         exit 1
 501                                 fi
 502                                 ;;
 503                         *)
 504                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 505                                 then
 506                                         echo "error: $title: invalid non-numeric in test" \
 507                                                 "selector: '$orig_selector'" >&2
 508                                         exit 1
 509                                 fi
 510                 esac
 511
 512                 # Short cut for "obvious" cases
 513                 test -z "$include" && test -z "$positive" && continue
 514                 test -n "$include" && test -n "$positive" && continue
 515
 516                 case "$selector" in
 517                         -*)
 518                                 if test $arg -le ${selector#-}
 519                                 then
 520                                         include=$positive
 521                                 fi
 522                                 ;;
 523                         *-)
 524                                 if test $arg -ge ${selector%-}
 525                                 then
 526                                         include=$positive
 527                                 fi
 528                                 ;;
 529                         *-*)
 530                                 if test ${selector%%-*} -le $arg \
 531                                         && test $arg -le ${selector#*-}
 532                                 then
 533                                         include=$positive
 534                                 fi
 535                                 ;;
 536                         *)
 537                                 if test $arg -eq $selector
 538                                 then
 539                                         include=$positive
 540                                 fi
 541                                 ;;
 542                 esac
 543         done
 544
 545         test -n "$include"
 546 }
 547
 548 maybe_teardown_verbose () {
 549         test -z "$verbose_only" && return
 550         exec 4>/dev/null 3>/dev/null
 551         verbose=
 552 }
 553
 554 last_verbose=t
 555 maybe_setup_verbose () {
 556         test -z "$verbose_only" && return
 557         if match_pattern_list $test_count $verbose_only
 558         then
 559                 exec 4>&2 3>&1
 560                 # Emit a delimiting blank line when going from
 561                 # non-verbose to verbose.  Within verbose mode the
 562                 # delimiter is printed by test_expect_*.  The choice
 563                 # of the initial $last_verbose is such that before
 564                 # test 1, we do not print it.
 565                 test -z "$last_verbose" && echo >&3 ""
 566                 verbose=t
 567         else
 568                 exec 4>/dev/null 3>/dev/null
 569                 verbose=
 570         fi
 571         last_verbose=$verbose
 572 }
 573
 574 maybe_teardown_valgrind () {
 575         test -z "$GIT_VALGRIND" && return
 576         GIT_VALGRIND_ENABLED=
 577 }
 578
 579 maybe_setup_valgrind () {
 580         test -z "$GIT_VALGRIND" && return
 581         if test -z "$valgrind_only"
 582         then
 583                 GIT_VALGRIND_ENABLED=t
 584                 return
 585         fi
 586         GIT_VALGRIND_ENABLED=
 587         if match_pattern_list $test_count $valgrind_only
 588         then
 589                 GIT_VALGRIND_ENABLED=t
 590         fi
 591 }
 592
 593 want_trace () {
 594         test "$trace" = t && {
 595                 test "$verbose" = t || test "$verbose_log" = t
 596         }
 597 }
 598
 599 # This is a separate function because some tests use
 600 # "return" to end a test_expect_success block early
 601 # (and we want to make sure we run any cleanup like
 602 # "set +x").
 603 test_eval_inner_ () {
 604         # Do not add anything extra (including LF) after '$*'
 605         eval "
 606                 want_trace && set -x
 607                 $*"
 608 }
 609
 610 test_eval_ () {
 611         # If "-x" tracing is in effect, then we want to avoid polluting stderr
 612         # with non-test commands. But once in "set -x" mode, we cannot prevent
 613         # the shell from printing the "set +x" to turn it off (nor the saving
 614         # of $? before that). But we can make sure that the output goes to
 615         # /dev/null.
 616         #
 617         # There are a few subtleties here:
 618         #
 619         #   - we have to redirect descriptor 4 in addition to 2, to cover
 620         #     BASH_XTRACEFD
 621         #
 622         #   - the actual eval has to come before the redirection block (since
 623         #     it needs to see descriptor 4 to set up its stderr)
 624         #
 625         #   - likewise, any error message we print must be outside the block to
 626         #     access descriptor 4
 627         #
 628         #   - checking $? has to come immediately after the eval, but it must
 629         #     be _inside_ the block to avoid polluting the "set -x" output
 630         #
 631
 632         test_eval_inner_ "$@" </dev/null >&3 2>&4
 633         {
 634                 test_eval_ret_=$?
 635                 if want_trace
 636                 then
 637                         set +x
 638                 fi
 639         } 2>/dev/null 4>&2
 640
 641         if test "$test_eval_ret_" != 0 && want_trace
 642         then
 643                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 644         fi
 645         return $test_eval_ret_
 646 }
 647
 648 test_run_ () {
 649         test_cleanup=:
 650         expecting_failure=$2
 651
 652         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 653                 # turn off tracing for this test-eval, as it simply creates
 654                 # confusing noise in the "-x" output
 655                 trace_tmp=$trace
 656                 trace=
 657                 # 117 is magic because it is unlikely to match the exit
 658                 # code of other programs
 659                 if test "OK-117" != "$(test_eval_ "(exit 117) && $1${LF}${LF}echo OK-\$?" 3>&1)"
 660                 then
 661                         error "bug in the test script: broken &&-chain or run-away HERE-DOC: $1"
 662                 fi
 663                 trace=$trace_tmp
 664         fi
 665
 666         setup_malloc_check
 667         test_eval_ "$1"
 668         eval_ret=$?
 669         teardown_malloc_check
 670
 671         if test -z "$immediate" || test $eval_ret = 0 ||
 672            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 673         then
 674                 setup_malloc_check
 675                 test_eval_ "$test_cleanup"
 676                 teardown_malloc_check
 677         fi
 678         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 679         then
 680                 echo ""
 681         fi
 682         return "$eval_ret"
 683 }
 684
 685 test_start_ () {
 686         test_count=$(($test_count+1))
 687         maybe_setup_verbose
 688         maybe_setup_valgrind
 689 }
 690
 691 test_finish_ () {
 692         echo >&3 ""
 693         maybe_teardown_valgrind
 694         maybe_teardown_verbose
 695 }
 696
 697 test_skip () {
 698         to_skip=
 699         skipped_reason=
 700         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 701         then
 702                 to_skip=t
 703                 skipped_reason="GIT_SKIP_TESTS"
 704         fi
 705         if test -z "$to_skip" && test -n "$test_prereq" &&
 706            ! test_have_prereq "$test_prereq"
 707         then
 708                 to_skip=t
 709
 710                 of_prereq=
 711                 if test "$missing_prereq" != "$test_prereq"
 712                 then
 713                         of_prereq=" of $test_prereq"
 714                 fi
 715                 skipped_reason="missing $missing_prereq${of_prereq}"
 716         fi
 717         if test -z "$to_skip" && test -n "$run_list" &&
 718                 ! match_test_selector_list '--run' $test_count "$run_list"
 719         then
 720                 to_skip=t
 721                 skipped_reason="--run"
 722         fi
 723
 724         case "$to_skip" in
 725         t)
 726                 say_color skip >&3 "skipping test: $@"
 727                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 728                 : true
 729                 ;;
 730         *)
 731                 false
 732                 ;;
 733         esac
 734 }
 735
 736 # stub; perf-lib overrides it
 737 test_at_end_hook_ () {
 738         :
 739 }
 740
 741 test_done () {
 742         GIT_EXIT_OK=t
 743
 744         if test -z "$HARNESS_ACTIVE"
 745         then
 746                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 747                 mkdir -p "$test_results_dir"
 748                 base=${0##*/}
 749                 test_results_path="$test_results_dir/${base%.sh}.counts"
 750
 751                 cat >"$test_results_path" <<-EOF
 752                 total $test_count
 753                 success $test_success
 754                 fixed $test_fixed
 755                 broken $test_broken
 756                 failed $test_failure
 757
 758                 EOF
 759         fi
 760
 761         if test "$test_fixed" != 0
 762         then
 763                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 764         fi
 765         if test "$test_broken" != 0
 766         then
 767                 say_color warn "# still have $test_broken known breakage(s)"
 768         fi
 769         if test "$test_broken" != 0 || test "$test_fixed" != 0
 770         then
 771                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 772                 msg="remaining $test_remaining test(s)"
 773         else
 774                 test_remaining=$test_count
 775                 msg="$test_count test(s)"
 776         fi
 777         case "$test_failure" in
 778         0)
 779                 if test $test_external_has_tap -eq 0
 780                 then
 781                         if test $test_remaining -gt 0
 782                         then
 783                                 say_color pass "# passed all $msg"
 784                         fi
 785
 786                         # Maybe print SKIP message
 787                         test -z "$skip_all" || skip_all="# SKIP $skip_all"
 788                         case "$test_count" in
 789                         0)
 790                                 say "1..$test_count${skip_all:+ $skip_all}"
 791                                 ;;
 792                         *)
 793                                 test -z "$skip_all" ||
 794                                 say_color warn "$skip_all"
 795                                 say "1..$test_count"
 796                                 ;;
 797                         esac
 798                 fi
 799
 800                 if test -z "$debug"
 801                 then
 802                         test -d "$TRASH_DIRECTORY" ||
 803                         error "Tests passed but trash directory already removed before test cleanup; aborting"
 804
 805                         cd "$TRASH_DIRECTORY/.." &&
 806                         rm -fr "$TRASH_DIRECTORY" ||
 807                         error "Tests passed but test cleanup failed; aborting"
 808                 fi
 809                 test_at_end_hook_
 810
 811                 exit 0 ;;
 812
 813         *)
 814                 if test $test_external_has_tap -eq 0
 815                 then
 816                         say_color error "# failed $test_failure among $msg"
 817                         say "1..$test_count"
 818                 fi
 819
 820                 exit 1 ;;
 821
 822         esac
 823 }
 824
 825 if test -n "$valgrind"
 826 then
 827         make_symlink () {
 828                 test -h "$2" &&
 829                 test "$1" = "$(readlink "$2")" || {
 830                         # be super paranoid
 831                         if mkdir "$2".lock
 832                         then
 833                                 rm -f "$2" &&
 834                                 ln -s "$1" "$2" &&
 835                                 rm -r "$2".lock
 836                         else
 837                                 while test -d "$2".lock
 838                                 do
 839                                         say "Waiting for lock on $2."
 840                                         sleep 1
 841                                 done
 842                         fi
 843                 }
 844         }
 845
 846         make_valgrind_symlink () {
 847                 # handle only executables, unless they are shell libraries that
 848                 # need to be in the exec-path.
 849                 test -x "$1" ||
 850                 test "# " = "$(head -c 2 <"$1")" ||
 851                 return;
 852
 853                 base=$(basename "$1")
 854                 case "$base" in
 855                 test-*)
 856                         symlink_target="$GIT_BUILD_DIR/t/helper/$base"
 857                         ;;
 858                 *)
 859                         symlink_target="$GIT_BUILD_DIR/$base"
 860                         ;;
 861                 esac
 862                 # do not override scripts
 863                 if test -x "$symlink_target" &&
 864                     test ! -d "$symlink_target" &&
 865                     test "#!" != "$(head -c 2 < "$symlink_target")"
 866                 then
 867                         symlink_target=../valgrind.sh
 868                 fi
 869                 case "$base" in
 870                 *.sh|*.perl)
 871                         symlink_target=../unprocessed-script
 872                 esac
 873                 # create the link, or replace it if it is out of date
 874                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 875         }
 876
 877         # override all git executables in TEST_DIRECTORY/..
 878         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 879         mkdir -p "$GIT_VALGRIND"/bin
 880         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
 881         do
 882                 make_valgrind_symlink $file
 883         done
 884         # special-case the mergetools loadables
 885         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 886         OLDIFS=$IFS
 887         IFS=:
 888         for path in $PATH
 889         do
 890                 ls "$path"/git-* 2> /dev/null |
 891                 while read file
 892                 do
 893                         make_valgrind_symlink "$file"
 894                 done
 895         done
 896         IFS=$OLDIFS
 897         PATH=$GIT_VALGRIND/bin:$PATH
 898         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 899         export GIT_VALGRIND
 900         GIT_VALGRIND_MODE="$valgrind"
 901         export GIT_VALGRIND_MODE
 902         GIT_VALGRIND_ENABLED=t
 903         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 904         export GIT_VALGRIND_ENABLED
 905 elif test -n "$GIT_TEST_INSTALLED"
 906 then
 907         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 908         error "Cannot run git from $GIT_TEST_INSTALLED."
 909         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 910         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 911 else # normal case, use ../bin-wrappers only unless $with_dashes:
 912         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 913         if ! test -x "$git_bin_dir/git"
 914         then
 915                 if test -z "$with_dashes"
 916                 then
 917                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 918                 fi
 919                 with_dashes=t
 920         fi
 921         PATH="$git_bin_dir:$PATH"
 922         GIT_EXEC_PATH=$GIT_BUILD_DIR
 923         if test -n "$with_dashes"
 924         then
 925                 PATH="$GIT_BUILD_DIR:$PATH"
 926         fi
 927 fi
 928 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 929 GIT_CONFIG_NOSYSTEM=1
 930 GIT_ATTR_NOSYSTEM=1
 931 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 932
 933 if test -z "$GIT_TEST_CMP"
 934 then
 935         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 936         then
 937                 GIT_TEST_CMP="$DIFF -c"
 938         else
 939                 GIT_TEST_CMP="$DIFF -u"
 940         fi
 941 fi
 942
 943 GITPERLLIB="$GIT_BUILD_DIR"/perl/build/lib
 944 export GITPERLLIB
 945 test -d "$GIT_BUILD_DIR"/templates/blt || {
 946         error "You haven't built things yet, have you?"
 947 }
 948
 949 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-chmtime
 950 then
 951         echo >&2 'You need to build test-chmtime:'
 952         echo >&2 'Run "make t/helper/test-chmtime" in the source (toplevel) directory'
 953         exit 1
 954 fi
 955
 956 # Test repository
 957 TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 958 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 959 case "$TRASH_DIRECTORY" in
 960 /*) ;; # absolute path is good
 961  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 962 esac
 963 rm -fr "$TRASH_DIRECTORY" || {
 964         GIT_EXIT_OK=t
 965         echo >&5 "FATAL: Cannot prepare test area"
 966         exit 1
 967 }
 968
 969 HOME="$TRASH_DIRECTORY"
 970 GNUPGHOME="$HOME/gnupg-home-not-used"
 971 export HOME GNUPGHOME
 972
 973 if test -z "$TEST_NO_CREATE_REPO"
 974 then
 975         test_create_repo "$TRASH_DIRECTORY"
 976 else
 977         mkdir -p "$TRASH_DIRECTORY"
 978 fi
 979 # Use -P to resolve symlinks in our working directory so that the cwd
 980 # in subprocesses like git equals our $PWD (for pathname comparisons).
 981 cd -P "$TRASH_DIRECTORY" || exit 1
 982
 983 this_test=${0##*/}
 984 this_test=${this_test%%-*}
 985 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 986 then
 987         say_color info >&3 "skipping test $this_test altogether"
 988         skip_all="skip all tests in $this_test"
 989         test_done
 990 fi
 991
 992 # Provide an implementation of the 'yes' utility
 993 yes () {
 994         if test $# = 0
 995         then
 996                 y=y
 997         else
 998                 y="$*"
 999         fi
1000
1001         i=0
1002         while test $i -lt 99
1003         do
1004                 echo "$y"
1005                 i=$(($i+1))
1006         done
1007 }
1008
1009 # Fix some commands on Windows
1010 uname_s=$(uname -s)
1011 case $uname_s in
1012 *MINGW*)
1013         # Windows has its own (incompatible) sort and find
1014         sort () {
1015                 /usr/bin/sort "$@"
1016         }
1017         find () {
1018                 /usr/bin/find "$@"
1019         }
1020         # git sees Windows-style pwd
1021         pwd () {
1022                 builtin pwd -W
1023         }
1024         # no POSIX permissions
1025         # backslashes in pathspec are converted to '/'
1026         # exec does not inherit the PID
1027         test_set_prereq MINGW
1028         test_set_prereq NATIVE_CRLF
1029         test_set_prereq SED_STRIPS_CR
1030         test_set_prereq GREP_STRIPS_CR
1031         GIT_TEST_CMP=mingw_test_cmp
1032         ;;
1033 *CYGWIN*)
1034         test_set_prereq POSIXPERM
1035         test_set_prereq EXECKEEPSPID
1036         test_set_prereq CYGWIN
1037         test_set_prereq SED_STRIPS_CR
1038         test_set_prereq GREP_STRIPS_CR
1039         ;;
1040 *)
1041         test_set_prereq POSIXPERM
1042         test_set_prereq BSLASHPSPEC
1043         test_set_prereq EXECKEEPSPID
1044         ;;
1045 esac
1046
1047 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1048 test -z "$NO_PERL" && test_set_prereq PERL
1049 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
1050 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1051 test -n "$USE_LIBPCRE1$USE_LIBPCRE2" && test_set_prereq PCRE
1052 test -n "$USE_LIBPCRE1" && test_set_prereq LIBPCRE1
1053 test -n "$USE_LIBPCRE2" && test_set_prereq LIBPCRE2
1054 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1055
1056 # Can we rely on git's output in the C locale?
1057 if test -n "$GETTEXT_POISON"
1058 then
1059         GIT_GETTEXT_POISON=YesPlease
1060         export GIT_GETTEXT_POISON
1061         test_set_prereq GETTEXT_POISON
1062 else
1063         test_set_prereq C_LOCALE_OUTPUT
1064 fi
1065
1066 test_lazy_prereq PIPE '
1067         # test whether the filesystem supports FIFOs
1068         test_have_prereq !MINGW,!CYGWIN &&
1069         rm -f testfifo && mkfifo testfifo
1070 '
1071
1072 test_lazy_prereq SYMLINKS '
1073         # test whether the filesystem supports symbolic links
1074         ln -s x y && test -h y
1075 '
1076
1077 test_lazy_prereq FILEMODE '
1078         test "$(git config --bool core.filemode)" = true
1079 '
1080
1081 test_lazy_prereq CASE_INSENSITIVE_FS '
1082         echo good >CamelCase &&
1083         echo bad >camelcase &&
1084         test "$(cat CamelCase)" != good
1085 '
1086
1087 test_lazy_prereq UTF8_NFD_TO_NFC '
1088         # check whether FS converts nfd unicode to nfc
1089         auml=$(printf "\303\244")
1090         aumlcdiar=$(printf "\141\314\210")
1091         >"$auml" &&
1092         case "$(echo *)" in
1093         "$aumlcdiar")
1094                 true ;;
1095         *)
1096                 false ;;
1097         esac
1098 '
1099
1100 test_lazy_prereq AUTOIDENT '
1101         sane_unset GIT_AUTHOR_NAME &&
1102         sane_unset GIT_AUTHOR_EMAIL &&
1103         git var GIT_AUTHOR_IDENT
1104 '
1105
1106 test_lazy_prereq EXPENSIVE '
1107         test -n "$GIT_TEST_LONG"
1108 '
1109
1110 test_lazy_prereq EXPENSIVE_ON_WINDOWS '
1111         test_have_prereq EXPENSIVE || test_have_prereq !MINGW,!CYGWIN
1112 '
1113
1114 test_lazy_prereq USR_BIN_TIME '
1115         test -x /usr/bin/time
1116 '
1117
1118 test_lazy_prereq NOT_ROOT '
1119         uid=$(id -u) &&
1120         test "$uid" != 0
1121 '
1122
1123 test_lazy_prereq JGIT '
1124         type jgit
1125 '
1126
1127 # SANITY is about "can you correctly predict what the filesystem would
1128 # do by only looking at the permission bits of the files and
1129 # directories?"  A typical example of !SANITY is running the test
1130 # suite as root, where a test may expect "chmod -r file && cat file"
1131 # to fail because file is supposed to be unreadable after a successful
1132 # chmod.  In an environment (i.e. combination of what filesystem is
1133 # being used and who is running the tests) that lacks SANITY, you may
1134 # be able to delete or create a file when the containing directory
1135 # doesn't have write permissions, or access a file even if the
1136 # containing directory doesn't have read or execute permissions.
1137
1138 test_lazy_prereq SANITY '
1139         mkdir SANETESTD.1 SANETESTD.2 &&
1140
1141         chmod +w SANETESTD.1 SANETESTD.2 &&
1142         >SANETESTD.1/x 2>SANETESTD.2/x &&
1143         chmod -w SANETESTD.1 &&
1144         chmod -r SANETESTD.1/x &&
1145         chmod -rx SANETESTD.2 ||
1146         error "bug in test sript: cannot prepare SANETESTD"
1147
1148         ! test -r SANETESTD.1/x &&
1149         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1150         status=$?
1151
1152         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1153         rm -rf SANETESTD.1 SANETESTD.2 ||
1154         error "bug in test sript: cannot clean SANETESTD"
1155         return $status
1156 '
1157
1158 test FreeBSD != $uname_s || GIT_UNZIP=${GIT_UNZIP:-/usr/local/bin/unzip}
1159 GIT_UNZIP=${GIT_UNZIP:-unzip}
1160 test_lazy_prereq UNZIP '
1161         "$GIT_UNZIP" -v
1162         test $? -ne 127
1163 '
1164
1165 run_with_limited_cmdline () {
1166         (ulimit -s 128 && "$@")
1167 }
1168
1169 test_lazy_prereq CMDLINE_LIMIT '
1170         test_have_prereq !MINGW,!CYGWIN &&
1171         run_with_limited_cmdline true
1172 '
1173
1174 run_with_limited_stack () {
1175         (ulimit -s 128 && "$@")
1176 }
1177
1178 test_lazy_prereq ULIMIT_STACK_SIZE '
1179         test_have_prereq !MINGW,!CYGWIN &&
1180         run_with_limited_stack true
1181 '
1182
1183 build_option () {
1184         git version --build-options |
1185         sed -ne "s/^$1: //p"
1186 }
1187
1188 test_lazy_prereq LONG_IS_64BIT '
1189         test 8 -le "$(build_option sizeof-long)"
1190 '
1191
1192 test_lazy_prereq TIME_IS_64BIT 'test-date is64bit'
1193 test_lazy_prereq TIME_T_IS_64BIT 'test-date time_t-is64bit'