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 : ${LSAN_OPTIONS=abort_on_error=1}
  50 export LSAN_OPTIONS
  51
  52 if test ! -f "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  53 then
  54         echo >&2 'error: GIT-BUILD-OPTIONS missing (has Git been built?).'
  55         exit 1
  56 fi
  57 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  58 export PERL_PATH SHELL_PATH
  59
  60 ################################################################
  61 # It appears that people try to run tests without building...
  62 "${GIT_TEST_INSTALLED:-$GIT_BUILD_DIR}/git$X" >/dev/null
  63 if test $? != 1
  64 then
  65         if test -n "$GIT_TEST_INSTALLED"
  66         then
  67                 echo >&2 "error: there is no working Git at '$GIT_TEST_INSTALLED'"
  68         else
  69                 echo >&2 'error: you do not seem to have built git yet.'
  70         fi
  71         exit 1
  72 fi
  73
  74 # Parse options while taking care to leave $@ intact, so we will still
  75 # have all the original command line options when executing the test
  76 # script again for '--tee' and '--verbose-log' below.
  77 store_arg_to=
  78 prev_opt=
  79 for opt
  80 do
  81         if test -n "$store_arg_to"
  82         then
  83                 eval $store_arg_to=\$opt
  84                 store_arg_to=
  85                 prev_opt=
  86                 continue
  87         fi
  88
  89         case "$opt" in
  90         -d|--d|--de|--deb|--debu|--debug)
  91                 debug=t ;;
  92         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
  93                 immediate=t ;;
  94         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
  95                 GIT_TEST_LONG=t; export GIT_TEST_LONG ;;
  96         -r)
  97                 store_arg_to=run_list
  98                 ;;
  99         --run=*)
 100                 run_list=${opt#--*=} ;;
 101         -h|--h|--he|--hel|--help)
 102                 help=t ;;
 103         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 104                 verbose=t ;;
 105         --verbose-only=*)
 106                 verbose_only=${opt#--*=}
 107                 ;;
 108         -q|--q|--qu|--qui|--quie|--quiet)
 109                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 110                 # passed without the ok/not ok details is always an error.
 111                 test -z "$HARNESS_ACTIVE" && quiet=t ;;
 112         --with-dashes)
 113                 with_dashes=t ;;
 114         --no-color)
 115                 color= ;;
 116         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 117                 valgrind=memcheck
 118                 tee=t
 119                 ;;
 120         --valgrind=*)
 121                 valgrind=${opt#--*=}
 122                 tee=t
 123                 ;;
 124         --valgrind-only=*)
 125                 valgrind_only=${opt#--*=}
 126                 tee=t
 127                 ;;
 128         --tee)
 129                 tee=t ;;
 130         --root=*)
 131                 root=${opt#--*=} ;;
 132         --chain-lint)
 133                 GIT_TEST_CHAIN_LINT=1 ;;
 134         --no-chain-lint)
 135                 GIT_TEST_CHAIN_LINT=0 ;;
 136         -x)
 137                 trace=t ;;
 138         -V|--verbose-log)
 139                 verbose_log=t
 140                 tee=t
 141                 ;;
 142         --stress)
 143                 stress=t ;;
 144         --stress=*)
 145                 stress=${opt#--*=}
 146                 case "$stress" in
 147                 *[^0-9]*|0*|"")
 148                         echo "error: --stress=<N> requires the number of jobs to run" >&2
 149                         exit 1
 150                         ;;
 151                 *)      # Good.
 152                         ;;
 153                 esac
 154                 ;;
 155         *)
 156                 echo "error: unknown test option '$opt'" >&2; exit 1 ;;
 157         esac
 158
 159         prev_opt=$opt
 160 done
 161 if test -n "$store_arg_to"
 162 then
 163         echo "error: $prev_opt requires an argument" >&2
 164         exit 1
 165 fi
 166
 167 if test -n "$valgrind_only"
 168 then
 169         test -z "$valgrind" && valgrind=memcheck
 170         test -z "$verbose" && verbose_only="$valgrind_only"
 171 elif test -n "$valgrind"
 172 then
 173         test -z "$verbose_log" && verbose=t
 174 fi
 175
 176 if test -n "$stress"
 177 then
 178         verbose=t
 179         trace=t
 180         immediate=t
 181 fi
 182
 183 TEST_STRESS_JOB_SFX="${GIT_TEST_STRESS_JOB_NR:+.stress-$GIT_TEST_STRESS_JOB_NR}"
 184 TEST_NAME="$(basename "$0" .sh)"
 185 TEST_RESULTS_DIR="$TEST_OUTPUT_DIRECTORY/test-results"
 186 TEST_RESULTS_BASE="$TEST_RESULTS_DIR/$TEST_NAME$TEST_STRESS_JOB_SFX"
 187 TRASH_DIRECTORY="trash directory.$TEST_NAME$TEST_STRESS_JOB_SFX"
 188 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 189 case "$TRASH_DIRECTORY" in
 190 /*) ;; # absolute path is good
 191  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 192 esac
 193
 194 # If --stress was passed, run this test repeatedly in several parallel loops.
 195 if test "$GIT_TEST_STRESS_STARTED" = "done"
 196 then
 197         : # Don't stress test again.
 198 elif test -n "$stress"
 199 then
 200         if test "$stress" != t
 201         then
 202                 job_count=$stress
 203         elif test -n "$GIT_TEST_STRESS_LOAD"
 204         then
 205                 job_count="$GIT_TEST_STRESS_LOAD"
 206         elif job_count=$(getconf _NPROCESSORS_ONLN 2>/dev/null) &&
 207              test -n "$job_count"
 208         then
 209                 job_count=$((2 * $job_count))
 210         else
 211                 job_count=8
 212         fi
 213
 214         mkdir -p "$TEST_RESULTS_DIR"
 215         stressfail="$TEST_RESULTS_BASE.stress-failed"
 216         rm -f "$stressfail"
 217
 218         stress_exit=0
 219         trap '
 220                 kill $job_pids 2>/dev/null
 221                 wait
 222                 stress_exit=1
 223         ' TERM INT HUP
 224
 225         job_pids=
 226         job_nr=0
 227         while test $job_nr -lt "$job_count"
 228         do
 229                 (
 230                         GIT_TEST_STRESS_STARTED=done
 231                         GIT_TEST_STRESS_JOB_NR=$job_nr
 232                         export GIT_TEST_STRESS_STARTED GIT_TEST_STRESS_JOB_NR
 233
 234                         trap '
 235                                 kill $test_pid 2>/dev/null
 236                                 wait
 237                                 exit 1
 238                         ' TERM INT
 239
 240                         cnt=0
 241                         while ! test -e "$stressfail"
 242                         do
 243                                 $TEST_SHELL_PATH "$0" "$@" >"$TEST_RESULTS_BASE.stress-$job_nr.out" 2>&1 &
 244                                 test_pid=$!
 245
 246                                 if wait $test_pid
 247                                 then
 248                                         printf "OK   %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 249                                 else
 250                                         echo $GIT_TEST_STRESS_JOB_NR >>"$stressfail"
 251                                         printf "FAIL %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 252                                 fi
 253                                 cnt=$(($cnt + 1))
 254                         done
 255                 ) &
 256                 job_pids="$job_pids $!"
 257                 job_nr=$(($job_nr + 1))
 258         done
 259
 260         wait
 261
 262         if test -f "$stressfail"
 263         then
 264                 echo "Log(s) of failed test run(s):"
 265                 for failed_job_nr in $(sort -n "$stressfail")
 266                 do
 267                         echo "Contents of '$TEST_RESULTS_BASE.stress-$failed_job_nr.out':"
 268                         cat "$TEST_RESULTS_BASE.stress-$failed_job_nr.out"
 269                 done
 270                 rm -rf "$TRASH_DIRECTORY.stress-failed"
 271                 # Move the last one.
 272                 mv "$TRASH_DIRECTORY.stress-$failed_job_nr" "$TRASH_DIRECTORY.stress-failed"
 273         fi
 274
 275         exit $stress_exit
 276 fi
 277
 278 # if --tee was passed, write the output not only to the terminal, but
 279 # additionally to the file test-results/$BASENAME.out, too.
 280 if test "$GIT_TEST_TEE_STARTED" = "done"
 281 then
 282         : # do not redirect again
 283 elif test -n "$tee"
 284 then
 285         mkdir -p "$TEST_RESULTS_DIR"
 286
 287         # Make this filename available to the sub-process in case it is using
 288         # --verbose-log.
 289         GIT_TEST_TEE_OUTPUT_FILE=$TEST_RESULTS_BASE.out
 290         export GIT_TEST_TEE_OUTPUT_FILE
 291
 292         # Truncate before calling "tee -a" to get rid of the results
 293         # from any previous runs.
 294         >"$GIT_TEST_TEE_OUTPUT_FILE"
 295
 296         (GIT_TEST_TEE_STARTED=done ${TEST_SHELL_PATH} "$0" "$@" 2>&1;
 297          echo $? >"$TEST_RESULTS_BASE.exit") | tee -a "$GIT_TEST_TEE_OUTPUT_FILE"
 298         test "$(cat "$TEST_RESULTS_BASE.exit")" = 0
 299         exit
 300 fi
 301
 302 if test -n "$trace" && test -n "$test_untraceable"
 303 then
 304         # '-x' tracing requested, but this test script can't be reliably
 305         # traced, unless it is run with a Bash version supporting
 306         # BASH_XTRACEFD (introduced in Bash v4.1).
 307         #
 308         # Perform this version check _after_ the test script was
 309         # potentially re-executed with $TEST_SHELL_PATH for '--tee' or
 310         # '--verbose-log', so the right shell is checked and the
 311         # warning is issued only once.
 312         if test -n "$BASH_VERSION" && eval '
 313              test ${BASH_VERSINFO[0]} -gt 4 || {
 314                test ${BASH_VERSINFO[0]} -eq 4 &&
 315                test ${BASH_VERSINFO[1]} -ge 1
 316              }
 317            '
 318         then
 319                 : Executed by a Bash version supporting BASH_XTRACEFD.  Good.
 320         else
 321                 echo >&2 "warning: ignoring -x; '$0' is untraceable without BASH_XTRACEFD"
 322                 trace=
 323         fi
 324 fi
 325 if test -n "$trace" && test -z "$verbose_log"
 326 then
 327         verbose=t
 328 fi
 329
 330 # For repeatability, reset the environment to known value.
 331 # TERM is sanitized below, after saving color control sequences.
 332 LANG=C
 333 LC_ALL=C
 334 PAGER=cat
 335 TZ=UTC
 336 export LANG LC_ALL PAGER TZ
 337 EDITOR=:
 338
 339 # GIT_TEST_GETTEXT_POISON should not influence git commands executed
 340 # during initialization of test-lib and the test repo. Back it up,
 341 # unset and then restore after initialization is finished.
 342 if test -n "$GIT_TEST_GETTEXT_POISON"
 343 then
 344         GIT_TEST_GETTEXT_POISON_ORIG=$GIT_TEST_GETTEXT_POISON
 345         unset GIT_TEST_GETTEXT_POISON
 346 fi
 347
 348 # A call to "unset" with no arguments causes at least Solaris 10
 349 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
 350 # deriving from the command substitution clustered with the other
 351 # ones.
 352 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
 353         my @env = keys %ENV;
 354         my $ok = join("|", qw(
 355                 TRACE
 356                 DEBUG
 357                 TEST
 358                 .*_TEST
 359                 PROVE
 360                 VALGRIND
 361                 UNZIP
 362                 PERF_
 363                 CURL_VERBOSE
 364                 TRACE_CURL
 365         ));
 366         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 367         print join("\n", @vars);
 368 ')
 369 unset XDG_CACHE_HOME
 370 unset XDG_CONFIG_HOME
 371 unset GITPERLLIB
 372 GIT_AUTHOR_EMAIL=author@example.com
 373 GIT_AUTHOR_NAME='A U Thor'
 374 GIT_COMMITTER_EMAIL=committer@example.com
 375 GIT_COMMITTER_NAME='C O Mitter'
 376 GIT_MERGE_VERBOSITY=5
 377 GIT_MERGE_AUTOEDIT=no
 378 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 379 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 380 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 381 export EDITOR
 382
 383 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 384 GIT_TRACE_BARE=1
 385 export GIT_TRACE_BARE
 386
 387 check_var_migration () {
 388         # the warnings and hints given from this helper depends
 389         # on end-user settings, which will disrupt the self-test
 390         # done on the test framework itself.
 391         case "$GIT_TEST_FRAMEWORK_SELFTEST" in
 392         t)      return ;;
 393         esac
 394
 395         old_name=$1 new_name=$2
 396         eval "old_isset=\${${old_name}:+isset}"
 397         eval "new_isset=\${${new_name}:+isset}"
 398
 399         case "$old_isset,$new_isset" in
 400         isset,)
 401                 echo >&2 "warning: $old_name is now $new_name"
 402                 echo >&2 "hint: set $new_name too during the transition period"
 403                 eval "$new_name=\$$old_name"
 404                 ;;
 405         isset,isset)
 406                 # do this later
 407                 # echo >&2 "warning: $old_name is now $new_name"
 408                 # echo >&2 "hint: remove $old_name"
 409                 ;;
 410         esac
 411 }
 412
 413 check_var_migration GIT_FSMONITOR_TEST GIT_TEST_FSMONITOR
 414 check_var_migration TEST_GIT_INDEX_VERSION GIT_TEST_INDEX_VERSION
 415 check_var_migration GIT_FORCE_PRELOAD_TEST GIT_TEST_PRELOAD_INDEX
 416
 417 # Use specific version of the index file format
 418 if test -n "${GIT_TEST_INDEX_VERSION:+isset}"
 419 then
 420         GIT_INDEX_VERSION="$GIT_TEST_INDEX_VERSION"
 421         export GIT_INDEX_VERSION
 422 fi
 423
 424 # Add libc MALLOC and MALLOC_PERTURB test
 425 # only if we are not executing the test with valgrind
 426 if test -n "$valgrind" ||
 427    test -n "$TEST_NO_MALLOC_CHECK"
 428 then
 429         setup_malloc_check () {
 430                 : nothing
 431         }
 432         teardown_malloc_check () {
 433                 : nothing
 434         }
 435 else
 436         setup_malloc_check () {
 437                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 438                 export MALLOC_CHECK_ MALLOC_PERTURB_
 439         }
 440         teardown_malloc_check () {
 441                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 442         }
 443 fi
 444
 445 # Protect ourselves from common misconfiguration to export
 446 # CDPATH into the environment
 447 unset CDPATH
 448
 449 unset GREP_OPTIONS
 450 unset UNZIP
 451
 452 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 453 1|2|true)
 454         GIT_TRACE=4
 455         ;;
 456 esac
 457
 458 # Convenience
 459 #
 460 # A regexp to match 5, 35 and 40 hexdigits
 461 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 462 _x35="$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 463 _x40="$_x35$_x05"
 464
 465 # Zero SHA-1
 466 _z40=0000000000000000000000000000000000000000
 467
 468 OID_REGEX="$_x40"
 469 ZERO_OID=$_z40
 470 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
 471 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
 472
 473 # Line feed
 474 LF='
 475 '
 476
 477 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 478 # when case-folding filenames
 479 u200c=$(printf '\342\200\214')
 480
 481 export _x05 _x35 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB ZERO_OID OID_REGEX
 482
 483 # Each test should start with something like this, after copyright notices:
 484 #
 485 # test_description='Description of this test...
 486 # This test checks if command xyzzy does the right thing...
 487 # '
 488 # . ./test-lib.sh
 489 test "x$TERM" != "xdumb" && (
 490                 test -t 1 &&
 491                 tput bold >/dev/null 2>&1 &&
 492                 tput setaf 1 >/dev/null 2>&1 &&
 493                 tput sgr0 >/dev/null 2>&1
 494         ) &&
 495         color=t
 496
 497 if test -n "$color"
 498 then
 499         # Save the color control sequences now rather than run tput
 500         # each time say_color() is called.  This is done for two
 501         # reasons:
 502         #   * TERM will be changed to dumb
 503         #   * HOME will be changed to a temporary directory and tput
 504         #     might need to read ~/.terminfo from the original HOME
 505         #     directory to get the control sequences
 506         # Note:  This approach assumes the control sequences don't end
 507         # in a newline for any terminal of interest (command
 508         # substitutions strip trailing newlines).  Given that most
 509         # (all?) terminals in common use are related to ECMA-48, this
 510         # shouldn't be a problem.
 511         say_color_error=$(tput bold; tput setaf 1) # bold red
 512         say_color_skip=$(tput setaf 4) # blue
 513         say_color_warn=$(tput setaf 3) # brown/yellow
 514         say_color_pass=$(tput setaf 2) # green
 515         say_color_info=$(tput setaf 6) # cyan
 516         say_color_reset=$(tput sgr0)
 517         say_color_="" # no formatting for normal text
 518         say_color () {
 519                 test -z "$1" && test -n "$quiet" && return
 520                 eval "say_color_color=\$say_color_$1"
 521                 shift
 522                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 523         }
 524 else
 525         say_color() {
 526                 test -z "$1" && test -n "$quiet" && return
 527                 shift
 528                 printf "%s\n" "$*"
 529         }
 530 fi
 531
 532 TERM=dumb
 533 export TERM
 534
 535 error () {
 536         say_color error "error: $*"
 537         GIT_EXIT_OK=t
 538         exit 1
 539 }
 540
 541 BUG () {
 542         error >&7 "bug in the test script: $*"
 543 }
 544
 545 say () {
 546         say_color info "$*"
 547 }
 548
 549 if test -n "$HARNESS_ACTIVE"
 550 then
 551         if test "$verbose" = t || test -n "$verbose_only"
 552         then
 553                 printf 'Bail out! %s\n' \
 554                  'verbose mode forbidden under TAP harness; try --verbose-log'
 555                 exit 1
 556         fi
 557 fi
 558
 559 test "${test_description}" != "" ||
 560 error "Test script did not set test_description."
 561
 562 if test "$help" = "t"
 563 then
 564         printf '%s\n' "$test_description"
 565         exit 0
 566 fi
 567
 568 exec 5>&1
 569 exec 6<&0
 570 exec 7>&2
 571 if test "$verbose_log" = "t"
 572 then
 573         exec 3>>"$GIT_TEST_TEE_OUTPUT_FILE" 4>&3
 574 elif test "$verbose" = "t"
 575 then
 576         exec 4>&2 3>&1
 577 else
 578         exec 4>/dev/null 3>/dev/null
 579 fi
 580
 581 # Send any "-x" output directly to stderr to avoid polluting tests
 582 # which capture stderr. We can do this unconditionally since it
 583 # has no effect if tracing isn't turned on.
 584 #
 585 # Note that this sets up the trace fd as soon as we assign the variable, so it
 586 # must come after the creation of descriptor 4 above. Likewise, we must never
 587 # unset this, as it has the side effect of closing descriptor 4, which we
 588 # use to show verbose tests to the user.
 589 #
 590 # Note also that we don't need or want to export it. The tracing is local to
 591 # this shell, and we would not want to influence any shells we exec.
 592 BASH_XTRACEFD=4
 593
 594 test_failure=0
 595 test_count=0
 596 test_fixed=0
 597 test_broken=0
 598 test_success=0
 599
 600 test_external_has_tap=0
 601
 602 die () {
 603         code=$?
 604         if test -n "$GIT_EXIT_OK"
 605         then
 606                 exit $code
 607         else
 608                 echo >&5 "FATAL: Unexpected exit with code $code"
 609                 exit 1
 610         fi
 611 }
 612
 613 GIT_EXIT_OK=
 614 trap 'die' EXIT
 615 trap 'exit $?' INT TERM HUP
 616
 617 # The user-facing functions are loaded from a separate file so that
 618 # test_perf subshells can have them too
 619 . "$TEST_DIRECTORY/test-lib-functions.sh"
 620
 621 # You are not expected to call test_ok_ and test_failure_ directly, use
 622 # the test_expect_* functions instead.
 623
 624 test_ok_ () {
 625         test_success=$(($test_success + 1))
 626         say_color "" "ok $test_count - $@"
 627 }
 628
 629 test_failure_ () {
 630         test_failure=$(($test_failure + 1))
 631         say_color error "not ok $test_count - $1"
 632         shift
 633         printf '%s\n' "$*" | sed -e 's/^/#      /'
 634         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 635 }
 636
 637 test_known_broken_ok_ () {
 638         test_fixed=$(($test_fixed+1))
 639         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 640 }
 641
 642 test_known_broken_failure_ () {
 643         test_broken=$(($test_broken+1))
 644         say_color warn "not ok $test_count - $@ # TODO known breakage"
 645 }
 646
 647 test_debug () {
 648         test "$debug" = "" || eval "$1"
 649 }
 650
 651 match_pattern_list () {
 652         arg="$1"
 653         shift
 654         test -z "$*" && return 1
 655         for pattern_
 656         do
 657                 case "$arg" in
 658                 $pattern_)
 659                         return 0
 660                 esac
 661         done
 662         return 1
 663 }
 664
 665 match_test_selector_list () {
 666         title="$1"
 667         shift
 668         arg="$1"
 669         shift
 670         test -z "$1" && return 0
 671
 672         # Both commas and whitespace are accepted as separators.
 673         OLDIFS=$IFS
 674         IFS='   ,'
 675         set -- $1
 676         IFS=$OLDIFS
 677
 678         # If the first selector is negative we include by default.
 679         include=
 680         case "$1" in
 681                 !*) include=t ;;
 682         esac
 683
 684         for selector
 685         do
 686                 orig_selector=$selector
 687
 688                 positive=t
 689                 case "$selector" in
 690                         !*)
 691                                 positive=
 692                                 selector=${selector##?}
 693                                 ;;
 694                 esac
 695
 696                 test -z "$selector" && continue
 697
 698                 case "$selector" in
 699                         *-*)
 700                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 701                                 then
 702                                         echo "error: $title: invalid non-numeric in range" \
 703                                                 "start: '$orig_selector'" >&2
 704                                         exit 1
 705                                 fi
 706                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 707                                 then
 708                                         echo "error: $title: invalid non-numeric in range" \
 709                                                 "end: '$orig_selector'" >&2
 710                                         exit 1
 711                                 fi
 712                                 ;;
 713                         *)
 714                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 715                                 then
 716                                         echo "error: $title: invalid non-numeric in test" \
 717                                                 "selector: '$orig_selector'" >&2
 718                                         exit 1
 719                                 fi
 720                 esac
 721
 722                 # Short cut for "obvious" cases
 723                 test -z "$include" && test -z "$positive" && continue
 724                 test -n "$include" && test -n "$positive" && continue
 725
 726                 case "$selector" in
 727                         -*)
 728                                 if test $arg -le ${selector#-}
 729                                 then
 730                                         include=$positive
 731                                 fi
 732                                 ;;
 733                         *-)
 734                                 if test $arg -ge ${selector%-}
 735                                 then
 736                                         include=$positive
 737                                 fi
 738                                 ;;
 739                         *-*)
 740                                 if test ${selector%%-*} -le $arg \
 741                                         && test $arg -le ${selector#*-}
 742                                 then
 743                                         include=$positive
 744                                 fi
 745                                 ;;
 746                         *)
 747                                 if test $arg -eq $selector
 748                                 then
 749                                         include=$positive
 750                                 fi
 751                                 ;;
 752                 esac
 753         done
 754
 755         test -n "$include"
 756 }
 757
 758 maybe_teardown_verbose () {
 759         test -z "$verbose_only" && return
 760         exec 4>/dev/null 3>/dev/null
 761         verbose=
 762 }
 763
 764 last_verbose=t
 765 maybe_setup_verbose () {
 766         test -z "$verbose_only" && return
 767         if match_pattern_list $test_count $verbose_only
 768         then
 769                 exec 4>&2 3>&1
 770                 # Emit a delimiting blank line when going from
 771                 # non-verbose to verbose.  Within verbose mode the
 772                 # delimiter is printed by test_expect_*.  The choice
 773                 # of the initial $last_verbose is such that before
 774                 # test 1, we do not print it.
 775                 test -z "$last_verbose" && echo >&3 ""
 776                 verbose=t
 777         else
 778                 exec 4>/dev/null 3>/dev/null
 779                 verbose=
 780         fi
 781         last_verbose=$verbose
 782 }
 783
 784 maybe_teardown_valgrind () {
 785         test -z "$GIT_VALGRIND" && return
 786         GIT_VALGRIND_ENABLED=
 787 }
 788
 789 maybe_setup_valgrind () {
 790         test -z "$GIT_VALGRIND" && return
 791         if test -z "$valgrind_only"
 792         then
 793                 GIT_VALGRIND_ENABLED=t
 794                 return
 795         fi
 796         GIT_VALGRIND_ENABLED=
 797         if match_pattern_list $test_count $valgrind_only
 798         then
 799                 GIT_VALGRIND_ENABLED=t
 800         fi
 801 }
 802
 803 want_trace () {
 804         test "$trace" = t && {
 805                 test "$verbose" = t || test "$verbose_log" = t
 806         }
 807 }
 808
 809 # This is a separate function because some tests use
 810 # "return" to end a test_expect_success block early
 811 # (and we want to make sure we run any cleanup like
 812 # "set +x").
 813 test_eval_inner_ () {
 814         # Do not add anything extra (including LF) after '$*'
 815         eval "
 816                 want_trace && set -x
 817                 $*"
 818 }
 819
 820 test_eval_ () {
 821         # If "-x" tracing is in effect, then we want to avoid polluting stderr
 822         # with non-test commands. But once in "set -x" mode, we cannot prevent
 823         # the shell from printing the "set +x" to turn it off (nor the saving
 824         # of $? before that). But we can make sure that the output goes to
 825         # /dev/null.
 826         #
 827         # There are a few subtleties here:
 828         #
 829         #   - we have to redirect descriptor 4 in addition to 2, to cover
 830         #     BASH_XTRACEFD
 831         #
 832         #   - the actual eval has to come before the redirection block (since
 833         #     it needs to see descriptor 4 to set up its stderr)
 834         #
 835         #   - likewise, any error message we print must be outside the block to
 836         #     access descriptor 4
 837         #
 838         #   - checking $? has to come immediately after the eval, but it must
 839         #     be _inside_ the block to avoid polluting the "set -x" output
 840         #
 841
 842         test_eval_inner_ "$@" </dev/null >&3 2>&4
 843         {
 844                 test_eval_ret_=$?
 845                 if want_trace
 846                 then
 847                         set +x
 848                 fi
 849         } 2>/dev/null 4>&2
 850
 851         if test "$test_eval_ret_" != 0 && want_trace
 852         then
 853                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 854         fi
 855         return $test_eval_ret_
 856 }
 857
 858 test_run_ () {
 859         test_cleanup=:
 860         expecting_failure=$2
 861
 862         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 863                 # turn off tracing for this test-eval, as it simply creates
 864                 # confusing noise in the "-x" output
 865                 trace_tmp=$trace
 866                 trace=
 867                 # 117 is magic because it is unlikely to match the exit
 868                 # code of other programs
 869                 if $(printf '%s\n' "$1" | sed -f "$GIT_BUILD_DIR/t/chainlint.sed" | grep -q '?![A-Z][A-Z]*?!') ||
 870                         test "OK-117" != "$(test_eval_ "(exit 117) && $1${LF}${LF}echo OK-\$?" 3>&1)"
 871                 then
 872                         BUG "broken &&-chain or run-away HERE-DOC: $1"
 873                 fi
 874                 trace=$trace_tmp
 875         fi
 876
 877         setup_malloc_check
 878         test_eval_ "$1"
 879         eval_ret=$?
 880         teardown_malloc_check
 881
 882         if test -z "$immediate" || test $eval_ret = 0 ||
 883            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 884         then
 885                 setup_malloc_check
 886                 test_eval_ "$test_cleanup"
 887                 teardown_malloc_check
 888         fi
 889         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 890         then
 891                 echo ""
 892         fi
 893         return "$eval_ret"
 894 }
 895
 896 test_start_ () {
 897         test_count=$(($test_count+1))
 898         maybe_setup_verbose
 899         maybe_setup_valgrind
 900 }
 901
 902 test_finish_ () {
 903         echo >&3 ""
 904         maybe_teardown_valgrind
 905         maybe_teardown_verbose
 906 }
 907
 908 test_skip () {
 909         to_skip=
 910         skipped_reason=
 911         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 912         then
 913                 to_skip=t
 914                 skipped_reason="GIT_SKIP_TESTS"
 915         fi
 916         if test -z "$to_skip" && test -n "$test_prereq" &&
 917            ! test_have_prereq "$test_prereq"
 918         then
 919                 to_skip=t
 920
 921                 of_prereq=
 922                 if test "$missing_prereq" != "$test_prereq"
 923                 then
 924                         of_prereq=" of $test_prereq"
 925                 fi
 926                 skipped_reason="missing $missing_prereq${of_prereq}"
 927         fi
 928         if test -z "$to_skip" && test -n "$run_list" &&
 929                 ! match_test_selector_list '--run' $test_count "$run_list"
 930         then
 931                 to_skip=t
 932                 skipped_reason="--run"
 933         fi
 934
 935         case "$to_skip" in
 936         t)
 937                 say_color skip >&3 "skipping test: $@"
 938                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 939                 : true
 940                 ;;
 941         *)
 942                 false
 943                 ;;
 944         esac
 945 }
 946
 947 # stub; perf-lib overrides it
 948 test_at_end_hook_ () {
 949         :
 950 }
 951
 952 test_done () {
 953         GIT_EXIT_OK=t
 954
 955         if test -z "$HARNESS_ACTIVE"
 956         then
 957                 mkdir -p "$TEST_RESULTS_DIR"
 958
 959                 cat >"$TEST_RESULTS_BASE.counts" <<-EOF
 960                 total $test_count
 961                 success $test_success
 962                 fixed $test_fixed
 963                 broken $test_broken
 964                 failed $test_failure
 965
 966                 EOF
 967         fi
 968
 969         if test "$test_fixed" != 0
 970         then
 971                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 972         fi
 973         if test "$test_broken" != 0
 974         then
 975                 say_color warn "# still have $test_broken known breakage(s)"
 976         fi
 977         if test "$test_broken" != 0 || test "$test_fixed" != 0
 978         then
 979                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 980                 msg="remaining $test_remaining test(s)"
 981         else
 982                 test_remaining=$test_count
 983                 msg="$test_count test(s)"
 984         fi
 985         case "$test_failure" in
 986         0)
 987                 if test $test_external_has_tap -eq 0
 988                 then
 989                         if test $test_remaining -gt 0
 990                         then
 991                                 say_color pass "# passed all $msg"
 992                         fi
 993
 994                         # Maybe print SKIP message
 995                         test -z "$skip_all" || skip_all="# SKIP $skip_all"
 996                         case "$test_count" in
 997                         0)
 998                                 say "1..$test_count${skip_all:+ $skip_all}"
 999                                 ;;
1000                         *)
1001                                 test -z "$skip_all" ||
1002                                 say_color warn "$skip_all"
1003                                 say "1..$test_count"
1004                                 ;;
1005                         esac
1006                 fi
1007
1008                 if test -z "$debug"
1009                 then
1010                         test -d "$TRASH_DIRECTORY" ||
1011                         error "Tests passed but trash directory already removed before test cleanup; aborting"
1012
1013                         cd "$TRASH_DIRECTORY/.." &&
1014                         rm -fr "$TRASH_DIRECTORY" ||
1015                         error "Tests passed but test cleanup failed; aborting"
1016                 fi
1017                 test_at_end_hook_
1018
1019                 exit 0 ;;
1020
1021         *)
1022                 if test $test_external_has_tap -eq 0
1023                 then
1024                         say_color error "# failed $test_failure among $msg"
1025                         say "1..$test_count"
1026                 fi
1027
1028                 exit 1 ;;
1029
1030         esac
1031 }
1032
1033 if test -n "$valgrind"
1034 then
1035         make_symlink () {
1036                 test -h "$2" &&
1037                 test "$1" = "$(readlink "$2")" || {
1038                         # be super paranoid
1039                         if mkdir "$2".lock
1040                         then
1041                                 rm -f "$2" &&
1042                                 ln -s "$1" "$2" &&
1043                                 rm -r "$2".lock
1044                         else
1045                                 while test -d "$2".lock
1046                                 do
1047                                         say "Waiting for lock on $2."
1048                                         sleep 1
1049                                 done
1050                         fi
1051                 }
1052         }
1053
1054         make_valgrind_symlink () {
1055                 # handle only executables, unless they are shell libraries that
1056                 # need to be in the exec-path.
1057                 test -x "$1" ||
1058                 test "# " = "$(test_copy_bytes 2 <"$1")" ||
1059                 return;
1060
1061                 base=$(basename "$1")
1062                 case "$base" in
1063                 test-*)
1064                         symlink_target="$GIT_BUILD_DIR/t/helper/$base"
1065                         ;;
1066                 *)
1067                         symlink_target="$GIT_BUILD_DIR/$base"
1068                         ;;
1069                 esac
1070                 # do not override scripts
1071                 if test -x "$symlink_target" &&
1072                     test ! -d "$symlink_target" &&
1073                     test "#!" != "$(test_copy_bytes 2 <"$symlink_target")"
1074                 then
1075                         symlink_target=../valgrind.sh
1076                 fi
1077                 case "$base" in
1078                 *.sh|*.perl)
1079                         symlink_target=../unprocessed-script
1080                 esac
1081                 # create the link, or replace it if it is out of date
1082                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
1083         }
1084
1085         # override all git executables in TEST_DIRECTORY/..
1086         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
1087         mkdir -p "$GIT_VALGRIND"/bin
1088         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
1089         do
1090                 make_valgrind_symlink $file
1091         done
1092         # special-case the mergetools loadables
1093         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
1094         OLDIFS=$IFS
1095         IFS=:
1096         for path in $PATH
1097         do
1098                 ls "$path"/git-* 2> /dev/null |
1099                 while read file
1100                 do
1101                         make_valgrind_symlink "$file"
1102                 done
1103         done
1104         IFS=$OLDIFS
1105         PATH=$GIT_VALGRIND/bin:$PATH
1106         GIT_EXEC_PATH=$GIT_VALGRIND/bin
1107         export GIT_VALGRIND
1108         GIT_VALGRIND_MODE="$valgrind"
1109         export GIT_VALGRIND_MODE
1110         GIT_VALGRIND_ENABLED=t
1111         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
1112         export GIT_VALGRIND_ENABLED
1113 elif test -n "$GIT_TEST_INSTALLED"
1114 then
1115         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
1116         error "Cannot run git from $GIT_TEST_INSTALLED."
1117         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR/t/helper:$PATH
1118         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
1119 else # normal case, use ../bin-wrappers only unless $with_dashes:
1120         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
1121         if ! test -x "$git_bin_dir/git"
1122         then
1123                 if test -z "$with_dashes"
1124                 then
1125                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
1126                 fi
1127                 with_dashes=t
1128         fi
1129         PATH="$git_bin_dir:$PATH"
1130         GIT_EXEC_PATH=$GIT_BUILD_DIR
1131         if test -n "$with_dashes"
1132         then
1133                 PATH="$GIT_BUILD_DIR:$PATH"
1134         fi
1135 fi
1136 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
1137 GIT_CONFIG_NOSYSTEM=1
1138 GIT_ATTR_NOSYSTEM=1
1139 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
1140
1141 if test -z "$GIT_TEST_CMP"
1142 then
1143         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
1144         then
1145                 GIT_TEST_CMP="$DIFF -c"
1146         else
1147                 GIT_TEST_CMP="$DIFF -u"
1148         fi
1149 fi
1150
1151 GITPERLLIB="$GIT_BUILD_DIR"/perl/build/lib
1152 export GITPERLLIB
1153 test -d "$GIT_BUILD_DIR"/templates/blt || {
1154         error "You haven't built things yet, have you?"
1155 }
1156
1157 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-tool
1158 then
1159         echo >&2 'You need to build test-tool:'
1160         echo >&2 'Run "make t/helper/test-tool" in the source (toplevel) directory'
1161         exit 1
1162 fi
1163
1164 # Test repository
1165 rm -fr "$TRASH_DIRECTORY" || {
1166         GIT_EXIT_OK=t
1167         echo >&5 "FATAL: Cannot prepare test area"
1168         exit 1
1169 }
1170
1171 HOME="$TRASH_DIRECTORY"
1172 GNUPGHOME="$HOME/gnupg-home-not-used"
1173 export HOME GNUPGHOME
1174
1175 if test -z "$TEST_NO_CREATE_REPO"
1176 then
1177         test_create_repo "$TRASH_DIRECTORY"
1178 else
1179         mkdir -p "$TRASH_DIRECTORY"
1180 fi
1181 # Use -P to resolve symlinks in our working directory so that the cwd
1182 # in subprocesses like git equals our $PWD (for pathname comparisons).
1183 cd -P "$TRASH_DIRECTORY" || exit 1
1184
1185 this_test=${0##*/}
1186 this_test=${this_test%%-*}
1187 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
1188 then
1189         say_color info >&3 "skipping test $this_test altogether"
1190         skip_all="skip all tests in $this_test"
1191         test_done
1192 fi
1193
1194 # Provide an implementation of the 'yes' utility
1195 yes () {
1196         if test $# = 0
1197         then
1198                 y=y
1199         else
1200                 y="$*"
1201         fi
1202
1203         i=0
1204         while test $i -lt 99
1205         do
1206                 echo "$y"
1207                 i=$(($i+1))
1208         done
1209 }
1210
1211 # Fix some commands on Windows
1212 uname_s=$(uname -s)
1213 case $uname_s in
1214 *MINGW*)
1215         # Windows has its own (incompatible) sort and find
1216         sort () {
1217                 /usr/bin/sort "$@"
1218         }
1219         find () {
1220                 /usr/bin/find "$@"
1221         }
1222         # git sees Windows-style pwd
1223         pwd () {
1224                 builtin pwd -W
1225         }
1226         # no POSIX permissions
1227         # backslashes in pathspec are converted to '/'
1228         # exec does not inherit the PID
1229         test_set_prereq MINGW
1230         test_set_prereq NATIVE_CRLF
1231         test_set_prereq SED_STRIPS_CR
1232         test_set_prereq GREP_STRIPS_CR
1233         GIT_TEST_CMP=mingw_test_cmp
1234         ;;
1235 *CYGWIN*)
1236         test_set_prereq POSIXPERM
1237         test_set_prereq EXECKEEPSPID
1238         test_set_prereq CYGWIN
1239         test_set_prereq SED_STRIPS_CR
1240         test_set_prereq GREP_STRIPS_CR
1241         ;;
1242 *)
1243         test_set_prereq POSIXPERM
1244         test_set_prereq BSLASHPSPEC
1245         test_set_prereq EXECKEEPSPID
1246         ;;
1247 esac
1248
1249 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1250 test -z "$NO_PERL" && test_set_prereq PERL
1251 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
1252 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1253 test -n "$USE_LIBPCRE1$USE_LIBPCRE2" && test_set_prereq PCRE
1254 test -n "$USE_LIBPCRE1" && test_set_prereq LIBPCRE1
1255 test -n "$USE_LIBPCRE2" && test_set_prereq LIBPCRE2
1256 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1257
1258 if test -n "$GIT_TEST_GETTEXT_POISON_ORIG"
1259 then
1260         GIT_TEST_GETTEXT_POISON=$GIT_TEST_GETTEXT_POISON_ORIG
1261         unset GIT_TEST_GETTEXT_POISON_ORIG
1262 fi
1263
1264 # Can we rely on git's output in the C locale?
1265 if test -z "$GIT_TEST_GETTEXT_POISON"
1266 then
1267         test_set_prereq C_LOCALE_OUTPUT
1268 fi
1269
1270 if test -z "$GIT_TEST_CHECK_CACHE_TREE"
1271 then
1272         GIT_TEST_CHECK_CACHE_TREE=true
1273         export GIT_TEST_CHECK_CACHE_TREE
1274 fi
1275
1276 test_lazy_prereq PIPE '
1277         # test whether the filesystem supports FIFOs
1278         test_have_prereq !MINGW,!CYGWIN &&
1279         rm -f testfifo && mkfifo testfifo
1280 '
1281
1282 test_lazy_prereq SYMLINKS '
1283         # test whether the filesystem supports symbolic links
1284         ln -s x y && test -h y
1285 '
1286
1287 test_lazy_prereq FILEMODE '
1288         test "$(git config --bool core.filemode)" = true
1289 '
1290
1291 test_lazy_prereq CASE_INSENSITIVE_FS '
1292         echo good >CamelCase &&
1293         echo bad >camelcase &&
1294         test "$(cat CamelCase)" != good
1295 '
1296
1297 test_lazy_prereq FUNNYNAMES '
1298         test_have_prereq !MINGW &&
1299         touch -- \
1300                 "FUNNYNAMES tab embedded" \
1301                 "FUNNYNAMES \"quote embedded\"" \
1302                 "FUNNYNAMES newline
1303 embedded" 2>/dev/null &&
1304         rm -- \
1305                 "FUNNYNAMES tab embedded" \
1306                 "FUNNYNAMES \"quote embedded\"" \
1307                 "FUNNYNAMES newline
1308 embedded" 2>/dev/null
1309 '
1310
1311 test_lazy_prereq UTF8_NFD_TO_NFC '
1312         # check whether FS converts nfd unicode to nfc
1313         auml=$(printf "\303\244")
1314         aumlcdiar=$(printf "\141\314\210")
1315         >"$auml" &&
1316         test -f "$aumlcdiar"
1317 '
1318
1319 test_lazy_prereq AUTOIDENT '
1320         sane_unset GIT_AUTHOR_NAME &&
1321         sane_unset GIT_AUTHOR_EMAIL &&
1322         git var GIT_AUTHOR_IDENT
1323 '
1324
1325 test_lazy_prereq EXPENSIVE '
1326         test -n "$GIT_TEST_LONG"
1327 '
1328
1329 test_lazy_prereq EXPENSIVE_ON_WINDOWS '
1330         test_have_prereq EXPENSIVE || test_have_prereq !MINGW,!CYGWIN
1331 '
1332
1333 test_lazy_prereq USR_BIN_TIME '
1334         test -x /usr/bin/time
1335 '
1336
1337 test_lazy_prereq NOT_ROOT '
1338         uid=$(id -u) &&
1339         test "$uid" != 0
1340 '
1341
1342 test_lazy_prereq JGIT '
1343         type jgit
1344 '
1345
1346 # SANITY is about "can you correctly predict what the filesystem would
1347 # do by only looking at the permission bits of the files and
1348 # directories?"  A typical example of !SANITY is running the test
1349 # suite as root, where a test may expect "chmod -r file && cat file"
1350 # to fail because file is supposed to be unreadable after a successful
1351 # chmod.  In an environment (i.e. combination of what filesystem is
1352 # being used and who is running the tests) that lacks SANITY, you may
1353 # be able to delete or create a file when the containing directory
1354 # doesn't have write permissions, or access a file even if the
1355 # containing directory doesn't have read or execute permissions.
1356
1357 test_lazy_prereq SANITY '
1358         mkdir SANETESTD.1 SANETESTD.2 &&
1359
1360         chmod +w SANETESTD.1 SANETESTD.2 &&
1361         >SANETESTD.1/x 2>SANETESTD.2/x &&
1362         chmod -w SANETESTD.1 &&
1363         chmod -r SANETESTD.1/x &&
1364         chmod -rx SANETESTD.2 ||
1365         BUG "cannot prepare SANETESTD"
1366
1367         ! test -r SANETESTD.1/x &&
1368         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1369         status=$?
1370
1371         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1372         rm -rf SANETESTD.1 SANETESTD.2 ||
1373         BUG "cannot clean SANETESTD"
1374         return $status
1375 '
1376
1377 test FreeBSD != $uname_s || GIT_UNZIP=${GIT_UNZIP:-/usr/local/bin/unzip}
1378 GIT_UNZIP=${GIT_UNZIP:-unzip}
1379 test_lazy_prereq UNZIP '
1380         "$GIT_UNZIP" -v
1381         test $? -ne 127
1382 '
1383
1384 run_with_limited_cmdline () {
1385         (ulimit -s 128 && "$@")
1386 }
1387
1388 test_lazy_prereq CMDLINE_LIMIT '
1389         test_have_prereq !MINGW,!CYGWIN &&
1390         run_with_limited_cmdline true
1391 '
1392
1393 run_with_limited_stack () {
1394         (ulimit -s 128 && "$@")
1395 }
1396
1397 test_lazy_prereq ULIMIT_STACK_SIZE '
1398         test_have_prereq !MINGW,!CYGWIN &&
1399         run_with_limited_stack true
1400 '
1401
1402 build_option () {
1403         git version --build-options |
1404         sed -ne "s/^$1: //p"
1405 }
1406
1407 test_lazy_prereq LONG_IS_64BIT '
1408         test 8 -le "$(build_option sizeof-long)"
1409 '
1410
1411 test_lazy_prereq TIME_IS_64BIT 'test-tool date is64bit'
1412 test_lazy_prereq TIME_T_IS_64BIT 'test-tool date time_t-is64bit'
1413
1414 test_lazy_prereq CURL '
1415         curl --version
1416 '
1417
1418 # SHA1 is a test if the hash algorithm in use is SHA-1.  This is both for tests
1419 # which will not work with other hash algorithms and tests that work but don't
1420 # test anything meaningful (e.g. special values which cause short collisions).
1421 test_lazy_prereq SHA1 '
1422         test $(git hash-object /dev/null) = e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
1423 '
1424
1425 test_lazy_prereq REBASE_P '
1426         test -z "$GIT_TEST_SKIP_REBASE_P"
1427 '