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 https://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 "$TEST_DIRECTORY"
  21 then
  22         # ensure that TEST_DIRECTORY is an absolute path so that it
  23         # is valid even if the current working directory is changed
  24         TEST_DIRECTORY=$(pwd)
  25 else
  26         # The TEST_DIRECTORY will always be the path to the "t"
  27         # directory in the git.git checkout. This is overridden by
  28         # e.g. t/lib-subtest.sh, but only because its $(pwd) is
  29         # different. Those tests still set "$TEST_DIRECTORY" to the
  30         # same path.
  31         #
  32         # See use of "$GIT_BUILD_DIR" and "$TEST_DIRECTORY" below for
  33         # hard assumptions about "$GIT_BUILD_DIR/t" existing and being
  34         # the "$TEST_DIRECTORY", and e.g. "$TEST_DIRECTORY/helper"
  35         # needing to exist.
  36         TEST_DIRECTORY=$(cd "$TEST_DIRECTORY" && pwd) || exit 1
  37 fi
  38 if test -z "$TEST_OUTPUT_DIRECTORY"
  39 then
  40         # Similarly, override this to store the test-results subdir
  41         # elsewhere
  42         TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  43 fi
  44 GIT_BUILD_DIR="${TEST_DIRECTORY%/t}"
  45 if test "$TEST_DIRECTORY" = "$GIT_BUILD_DIR"
  46 then
  47         echo "PANIC: Running in a $TEST_DIRECTORY that doesn't end in '/t'?" >&2
  48         exit 1
  49 fi
  50 if test -f "$GIT_BUILD_DIR/GIT-BUILD-DIR"
  51 then
  52         GIT_BUILD_DIR="$(cat "$GIT_BUILD_DIR/GIT-BUILD-DIR")" || exit 1
  53         # On Windows, we must convert Windows paths lest they contain a colon
  54         case "$(uname -s)" in
  55         *MINGW*)
  56                 GIT_BUILD_DIR="$(cygpath -au "$GIT_BUILD_DIR")"
  57                 ;;
  58         esac
  59 fi
  60
  61 # Prepend a string to a VAR using an arbitrary ":" delimiter, not
  62 # adding the delimiter if VAR or VALUE is empty. I.e. a generalized:
  63 #
  64 #       VAR=$1${VAR:+${1:+$2}$VAR}
  65 #
  66 # Usage (using ":" as the $2 delimiter):
  67 #
  68 #       prepend_var VAR : VALUE
  69 prepend_var () {
  70         eval "$1=\"$3\${$1:+${3:+$2}\$$1}\""
  71 }
  72
  73 # If [AL]SAN is in effect we want to abort so that we notice
  74 # problems. The GIT_SAN_OPTIONS variable can be used to set common
  75 # defaults shared between [AL]SAN_OPTIONS.
  76 prepend_var GIT_SAN_OPTIONS : abort_on_error=1
  77 prepend_var GIT_SAN_OPTIONS : strip_path_prefix="$GIT_BUILD_DIR/"
  78
  79 # If we were built with ASAN, it may complain about leaks
  80 # of program-lifetime variables. Disable it by default to lower
  81 # the noise level. This needs to happen at the start of the script,
  82 # before we even do our "did we build git yet" check (since we don't
  83 # want that one to complain to stderr).
  84 prepend_var ASAN_OPTIONS : $GIT_SAN_OPTIONS
  85 prepend_var ASAN_OPTIONS : detect_leaks=0
  86 export ASAN_OPTIONS
  87
  88 prepend_var LSAN_OPTIONS : $GIT_SAN_OPTIONS
  89 prepend_var LSAN_OPTIONS : fast_unwind_on_malloc=0
  90 export LSAN_OPTIONS
  91
  92 prepend_var UBSAN_OPTIONS : $GIT_SAN_OPTIONS
  93 export UBSAN_OPTIONS
  94
  95 if test ! -f "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  96 then
  97         echo >&2 'error: GIT-BUILD-OPTIONS missing (has Git been built?).'
  98         exit 1
  99 fi
 100 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
 101 export PERL_PATH SHELL_PATH
 102
 103 # In t0000, we need to override test directories of nested testcases. In case
 104 # the developer has TEST_OUTPUT_DIRECTORY part of his build options, then we'd
 105 # reset this value to instead contain what the developer has specified. We thus
 106 # have this knob to allow overriding the directory.
 107 if test -n "${TEST_OUTPUT_DIRECTORY_OVERRIDE}"
 108 then
 109         TEST_OUTPUT_DIRECTORY="${TEST_OUTPUT_DIRECTORY_OVERRIDE}"
 110 fi
 111
 112 # Disallow the use of abbreviated options in the test suite by default
 113 if test -z "${GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS}"
 114 then
 115         GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS=true
 116         export GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS
 117 fi
 118
 119 # Explicitly set the default branch name for testing, to avoid the
 120 # transitory "git init" warning under --verbose.
 121 : ${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME:=master}
 122 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 123
 124 ################################################################
 125 # It appears that people try to run tests without building...
 126 "${GIT_TEST_INSTALLED:-$GIT_BUILD_DIR}/git$X" >/dev/null
 127 if test $? != 1
 128 then
 129         if test -n "$GIT_TEST_INSTALLED"
 130         then
 131                 echo >&2 "error: there is no working Git at '$GIT_TEST_INSTALLED'"
 132         else
 133                 echo >&2 'error: you do not seem to have built git yet.'
 134         fi
 135         exit 1
 136 fi
 137
 138 store_arg_to=
 139 opt_required_arg=
 140 # $1: option string
 141 # $2: name of the var where the arg will be stored
 142 mark_option_requires_arg () {
 143         if test -n "$opt_required_arg"
 144         then
 145                 echo "error: options that require args cannot be bundled" \
 146                         "together: '$opt_required_arg' and '$1'" >&2
 147                 exit 1
 148         fi
 149         opt_required_arg=$1
 150         store_arg_to=$2
 151 }
 152
 153 # These functions can be overridden e.g. to output JUnit XML
 154 start_test_output () { :; }
 155 start_test_case_output () { :; }
 156 finalize_test_case_output () { :; }
 157 finalize_test_output () { :; }
 158
 159 parse_option () {
 160         local opt="$1"
 161
 162         case "$opt" in
 163         -d|--d|--de|--deb|--debu|--debug)
 164                 debug=t ;;
 165         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 166                 immediate=t ;;
 167         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 168                 GIT_TEST_LONG=t; export GIT_TEST_LONG ;;
 169         -r)
 170                 mark_option_requires_arg "$opt" run_list
 171                 ;;
 172         --run=*)
 173                 run_list=${opt#--*=} ;;
 174         -h|--h|--he|--hel|--help)
 175                 help=t ;;
 176         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 177                 verbose=t ;;
 178         --verbose-only=*)
 179                 verbose_only=${opt#--*=}
 180                 ;;
 181         -q|--q|--qu|--qui|--quie|--quiet)
 182                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 183                 # passed without the ok/not ok details is always an error.
 184                 test -z "$HARNESS_ACTIVE" && quiet=t ;;
 185         --with-dashes)
 186                 with_dashes=t ;;
 187         --no-bin-wrappers)
 188                 no_bin_wrappers=t ;;
 189         --no-color)
 190                 color= ;;
 191         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 192                 valgrind=memcheck
 193                 tee=t
 194                 ;;
 195         --valgrind=*)
 196                 valgrind=${opt#--*=}
 197                 tee=t
 198                 ;;
 199         --valgrind-only=*)
 200                 valgrind_only=${opt#--*=}
 201                 tee=t
 202                 ;;
 203         --tee)
 204                 tee=t ;;
 205         --root=*)
 206                 root=${opt#--*=} ;;
 207         --chain-lint)
 208                 GIT_TEST_CHAIN_LINT=1 ;;
 209         --no-chain-lint)
 210                 GIT_TEST_CHAIN_LINT=0 ;;
 211         -x)
 212                 trace=t ;;
 213         -V|--verbose-log)
 214                 verbose_log=t
 215                 tee=t
 216                 ;;
 217         --write-junit-xml)
 218                 . "$TEST_DIRECTORY/test-lib-junit.sh"
 219                 ;;
 220         --github-workflow-markup)
 221                 . "$TEST_DIRECTORY/test-lib-github-workflow-markup.sh"
 222                 ;;
 223         --stress)
 224                 stress=t ;;
 225         --stress=*)
 226                 echo "error: --stress does not accept an argument: '$opt'" >&2
 227                 echo "did you mean --stress-jobs=${opt#*=} or --stress-limit=${opt#*=}?" >&2
 228                 exit 1
 229                 ;;
 230         --stress-jobs=*)
 231                 stress=t;
 232                 stress_jobs=${opt#--*=}
 233                 case "$stress_jobs" in
 234                 *[!0-9]*|0*|"")
 235                         echo "error: --stress-jobs=<N> requires the number of jobs to run" >&2
 236                         exit 1
 237                         ;;
 238                 *)      # Good.
 239                         ;;
 240                 esac
 241                 ;;
 242         --stress-limit=*)
 243                 stress=t;
 244                 stress_limit=${opt#--*=}
 245                 case "$stress_limit" in
 246                 *[!0-9]*|0*|"")
 247                         echo "error: --stress-limit=<N> requires the number of repetitions" >&2
 248                         exit 1
 249                         ;;
 250                 *)      # Good.
 251                         ;;
 252                 esac
 253                 ;;
 254         --invert-exit-code)
 255                 invert_exit_code=t
 256                 ;;
 257         *)
 258                 echo "error: unknown test option '$opt'" >&2; exit 1 ;;
 259         esac
 260 }
 261
 262 # Parse options while taking care to leave $@ intact, so we will still
 263 # have all the original command line options when executing the test
 264 # script again for '--tee' and '--verbose-log' later.
 265 for opt
 266 do
 267         if test -n "$store_arg_to"
 268         then
 269                 eval $store_arg_to=\$opt
 270                 store_arg_to=
 271                 opt_required_arg=
 272                 continue
 273         fi
 274
 275         case "$opt" in
 276         --*|-?)
 277                 parse_option "$opt" ;;
 278         -?*)
 279                 # bundled short options must be fed separately to parse_option
 280                 opt=${opt#-}
 281                 while test -n "$opt"
 282                 do
 283                         extra=${opt#?}
 284                         this=${opt%$extra}
 285                         opt=$extra
 286                         parse_option "-$this"
 287                 done
 288                 ;;
 289         *)
 290                 echo "error: unknown test option '$opt'" >&2; exit 1 ;;
 291         esac
 292 done
 293 if test -n "$store_arg_to"
 294 then
 295         echo "error: $opt_required_arg requires an argument" >&2
 296         exit 1
 297 fi
 298
 299 if test -n "$valgrind_only"
 300 then
 301         test -z "$valgrind" && valgrind=memcheck
 302         test -z "$verbose" && verbose_only="$valgrind_only"
 303 elif test -n "$valgrind"
 304 then
 305         test -z "$verbose_log" && verbose=t
 306 fi
 307
 308 if test -n "$stress"
 309 then
 310         verbose=t
 311         trace=t
 312         immediate=t
 313 fi
 314
 315 TEST_STRESS_JOB_SFX="${GIT_TEST_STRESS_JOB_NR:+.stress-$GIT_TEST_STRESS_JOB_NR}"
 316 TEST_NAME="$(basename "$0" .sh)"
 317 TEST_NUMBER="${TEST_NAME%%-*}"
 318 TEST_NUMBER="${TEST_NUMBER#t}"
 319 TEST_RESULTS_DIR="$TEST_OUTPUT_DIRECTORY/test-results"
 320 TEST_RESULTS_BASE="$TEST_RESULTS_DIR/$TEST_NAME$TEST_STRESS_JOB_SFX"
 321 TEST_RESULTS_SAN_FILE_PFX=trace
 322 TEST_RESULTS_SAN_DIR_SFX=leak
 323 TEST_RESULTS_SAN_FILE=
 324 TEST_RESULTS_SAN_DIR="$TEST_RESULTS_DIR/$TEST_NAME.$TEST_RESULTS_SAN_DIR_SFX"
 325 TRASH_DIRECTORY="trash directory.$TEST_NAME$TEST_STRESS_JOB_SFX"
 326 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 327 case "$TRASH_DIRECTORY" in
 328 /*) ;; # absolute path is good
 329  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 330 esac
 331
 332 # Utility functions using $TEST_RESULTS_* variables
 333 nr_san_dir_leaks_ () {
 334         # stderr piped to /dev/null because the directory may have
 335         # been "rmdir"'d already.
 336         find "$TEST_RESULTS_SAN_DIR" \
 337                 -type f \
 338                 -name "$TEST_RESULTS_SAN_FILE_PFX.*" 2>/dev/null |
 339         xargs grep -lv "Unable to get registers from thread" |
 340         wc -l
 341 }
 342
 343 # If --stress was passed, run this test repeatedly in several parallel loops.
 344 if test "$GIT_TEST_STRESS_STARTED" = "done"
 345 then
 346         : # Don't stress test again.
 347 elif test -n "$stress"
 348 then
 349         if test -n "$stress_jobs"
 350         then
 351                 job_count=$stress_jobs
 352         elif test -n "$GIT_TEST_STRESS_LOAD"
 353         then
 354                 job_count="$GIT_TEST_STRESS_LOAD"
 355         elif job_count=$(getconf _NPROCESSORS_ONLN 2>/dev/null) &&
 356              test -n "$job_count"
 357         then
 358                 job_count=$((2 * $job_count))
 359         else
 360                 job_count=8
 361         fi
 362
 363         mkdir -p "$TEST_RESULTS_DIR"
 364         stressfail="$TEST_RESULTS_BASE.stress-failed"
 365         rm -f "$stressfail"
 366
 367         stress_exit=0
 368         trap '
 369                 kill $job_pids 2>/dev/null
 370                 wait
 371                 stress_exit=1
 372         ' TERM INT HUP
 373
 374         job_pids=
 375         job_nr=0
 376         while test $job_nr -lt "$job_count"
 377         do
 378                 (
 379                         GIT_TEST_STRESS_STARTED=done
 380                         GIT_TEST_STRESS_JOB_NR=$job_nr
 381                         export GIT_TEST_STRESS_STARTED GIT_TEST_STRESS_JOB_NR
 382
 383                         trap '
 384                                 kill $test_pid 2>/dev/null
 385                                 wait
 386                                 exit 1
 387                         ' TERM INT
 388
 389                         cnt=1
 390                         while ! test -e "$stressfail" &&
 391                               { test -z "$stress_limit" ||
 392                                 test $cnt -le $stress_limit ; }
 393                         do
 394                                 $TEST_SHELL_PATH "$0" "$@" >"$TEST_RESULTS_BASE.stress-$job_nr.out" 2>&1 &
 395                                 test_pid=$!
 396
 397                                 if wait $test_pid
 398                                 then
 399                                         printf "OK   %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 400                                 else
 401                                         echo $GIT_TEST_STRESS_JOB_NR >>"$stressfail"
 402                                         printf "FAIL %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 403                                 fi
 404                                 cnt=$(($cnt + 1))
 405                         done
 406                 ) &
 407                 job_pids="$job_pids $!"
 408                 job_nr=$(($job_nr + 1))
 409         done
 410
 411         wait
 412
 413         if test -f "$stressfail"
 414         then
 415                 stress_exit=1
 416                 echo "Log(s) of failed test run(s):"
 417                 for failed_job_nr in $(sort -n "$stressfail")
 418                 do
 419                         echo "Contents of '$TEST_RESULTS_BASE.stress-$failed_job_nr.out':"
 420                         cat "$TEST_RESULTS_BASE.stress-$failed_job_nr.out"
 421                 done
 422                 rm -rf "$TRASH_DIRECTORY.stress-failed"
 423                 # Move the last one.
 424                 mv "$TRASH_DIRECTORY.stress-$failed_job_nr" "$TRASH_DIRECTORY.stress-failed"
 425         fi
 426
 427         exit $stress_exit
 428 fi
 429
 430 # if --tee was passed, write the output not only to the terminal, but
 431 # additionally to the file test-results/$BASENAME.out, too.
 432 if test "$GIT_TEST_TEE_STARTED" = "done"
 433 then
 434         : # do not redirect again
 435 elif test -n "$tee"
 436 then
 437         mkdir -p "$TEST_RESULTS_DIR"
 438
 439         # Make this filename available to the sub-process in case it is using
 440         # --verbose-log.
 441         GIT_TEST_TEE_OUTPUT_FILE=$TEST_RESULTS_BASE.out
 442         export GIT_TEST_TEE_OUTPUT_FILE
 443
 444         # Truncate before calling "tee -a" to get rid of the results
 445         # from any previous runs.
 446         >"$GIT_TEST_TEE_OUTPUT_FILE"
 447
 448         (GIT_TEST_TEE_STARTED=done ${TEST_SHELL_PATH} "$0" "$@" 2>&1;
 449          echo $? >"$TEST_RESULTS_BASE.exit") | tee -a "$GIT_TEST_TEE_OUTPUT_FILE"
 450         test "$(cat "$TEST_RESULTS_BASE.exit")" = 0
 451         exit
 452 fi
 453
 454 if test -n "$trace" && test -n "$test_untraceable"
 455 then
 456         # '-x' tracing requested, but this test script can't be reliably
 457         # traced, unless it is run with a Bash version supporting
 458         # BASH_XTRACEFD (introduced in Bash v4.1).
 459         #
 460         # Perform this version check _after_ the test script was
 461         # potentially re-executed with $TEST_SHELL_PATH for '--tee' or
 462         # '--verbose-log', so the right shell is checked and the
 463         # warning is issued only once.
 464         if test -n "$BASH_VERSION" && eval '
 465              test ${BASH_VERSINFO[0]} -gt 4 || {
 466                test ${BASH_VERSINFO[0]} -eq 4 &&
 467                test ${BASH_VERSINFO[1]} -ge 1
 468              }
 469            '
 470         then
 471                 : Executed by a Bash version supporting BASH_XTRACEFD.  Good.
 472         else
 473                 echo >&2 "warning: ignoring -x; '$0' is untraceable without BASH_XTRACEFD"
 474                 trace=
 475         fi
 476 fi
 477 if test -n "$trace" && test -z "$verbose_log"
 478 then
 479         verbose=t
 480 fi
 481
 482 # Since bash 5.0, checkwinsize is enabled by default which does
 483 # update the COLUMNS variable every time a non-builtin command
 484 # completes, even for non-interactive shells.
 485 # Disable that since we are aiming for repeatability.
 486 test -n "$BASH_VERSION" && shopt -u checkwinsize 2>/dev/null
 487
 488 # For repeatability, reset the environment to known value.
 489 # TERM is sanitized below, after saving color control sequences.
 490 LANG=C
 491 LC_ALL=C
 492 PAGER=cat
 493 TZ=UTC
 494 COLUMNS=80
 495 export LANG LC_ALL PAGER TZ COLUMNS
 496 EDITOR=:
 497
 498 # A call to "unset" with no arguments causes at least Solaris 10
 499 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
 500 # deriving from the command substitution clustered with the other
 501 # ones.
 502 unset VISUAL EMAIL LANGUAGE $("$PERL_PATH" -e '
 503         my @env = keys %ENV;
 504         my $ok = join("|", qw(
 505                 TRACE
 506                 DEBUG
 507                 TEST
 508                 .*_TEST
 509                 PROVE
 510                 VALGRIND
 511                 UNZIP
 512                 PERF_
 513                 CURL_VERBOSE
 514                 TRACE_CURL
 515         ));
 516         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 517         print join("\n", @vars);
 518 ')
 519 unset XDG_CACHE_HOME
 520 unset XDG_CONFIG_HOME
 521 unset GITPERLLIB
 522 unset GIT_TRACE2_PARENT_NAME
 523 unset GIT_TRACE2_PARENT_SID
 524 TEST_AUTHOR_LOCALNAME=author
 525 TEST_AUTHOR_DOMAIN=example.com
 526 GIT_AUTHOR_EMAIL=${TEST_AUTHOR_LOCALNAME}@${TEST_AUTHOR_DOMAIN}
 527 GIT_AUTHOR_NAME='A U Thor'
 528 GIT_AUTHOR_DATE='1112354055 +0200'
 529 TEST_COMMITTER_LOCALNAME=committer
 530 TEST_COMMITTER_DOMAIN=example.com
 531 GIT_COMMITTER_EMAIL=${TEST_COMMITTER_LOCALNAME}@${TEST_COMMITTER_DOMAIN}
 532 GIT_COMMITTER_NAME='C O Mitter'
 533 GIT_COMMITTER_DATE='1112354055 +0200'
 534 GIT_MERGE_VERBOSITY=5
 535 GIT_MERGE_AUTOEDIT=no
 536 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 537 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 538 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 539 export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 540 export EDITOR
 541
 542 GIT_DEFAULT_HASH="${GIT_TEST_DEFAULT_HASH:-sha1}"
 543 export GIT_DEFAULT_HASH
 544 GIT_DEFAULT_REF_FORMAT="${GIT_TEST_DEFAULT_REF_FORMAT:-files}"
 545 export GIT_DEFAULT_REF_FORMAT
 546 GIT_TEST_MERGE_ALGORITHM="${GIT_TEST_MERGE_ALGORITHM:-ort}"
 547 export GIT_TEST_MERGE_ALGORITHM
 548
 549 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 550 GIT_TRACE_BARE=1
 551 export GIT_TRACE_BARE
 552
 553 # Some tests scan the GIT_TRACE2_EVENT feed for events, but the
 554 # default depth is 2, which frequently causes issues when the
 555 # events are wrapped in new regions. Set it to a sufficiently
 556 # large depth to avoid custom changes in the test suite.
 557 GIT_TRACE2_EVENT_NESTING=100
 558 export GIT_TRACE2_EVENT_NESTING
 559
 560 # Use specific version of the index file format
 561 if test -n "${GIT_TEST_INDEX_VERSION:+isset}"
 562 then
 563         GIT_INDEX_VERSION="$GIT_TEST_INDEX_VERSION"
 564         export GIT_INDEX_VERSION
 565 fi
 566
 567 if test -n "$GIT_TEST_PERL_FATAL_WARNINGS"
 568 then
 569         GIT_PERL_FATAL_WARNINGS=1
 570         export GIT_PERL_FATAL_WARNINGS
 571 fi
 572
 573 case $GIT_TEST_FSYNC in
 574 '')
 575         GIT_TEST_FSYNC=0
 576         export GIT_TEST_FSYNC
 577         ;;
 578 esac
 579
 580 # Add libc MALLOC and MALLOC_PERTURB test only if we are not executing
 581 # the test with valgrind and have not compiled with conflict SANITIZE
 582 # options.
 583 if test -n "$valgrind" ||
 584    test -n "$SANITIZE_ADDRESS" ||
 585    test -n "$SANITIZE_LEAK" ||
 586    test -n "$TEST_NO_MALLOC_CHECK"
 587 then
 588         setup_malloc_check () {
 589                 : nothing
 590         }
 591         teardown_malloc_check () {
 592                 : nothing
 593         }
 594 else
 595         _USE_GLIBC_TUNABLES=
 596         if _GLIBC_VERSION=$(getconf GNU_LIBC_VERSION 2>/dev/null) &&
 597            _GLIBC_VERSION=${_GLIBC_VERSION#"glibc "} &&
 598            expr 2.34 \<= "$_GLIBC_VERSION" >/dev/null
 599         then
 600                 _USE_GLIBC_TUNABLES=YesPlease
 601         fi
 602         setup_malloc_check () {
 603                 local g
 604                 local t
 605                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 606                 export MALLOC_CHECK_ MALLOC_PERTURB_
 607                 if test -n "$_USE_GLIBC_TUNABLES"
 608                 then
 609                         g=
 610                         LD_PRELOAD="libc_malloc_debug.so.0"
 611                         for t in \
 612                                 glibc.malloc.check=1 \
 613                                 glibc.malloc.perturb=165
 614                         do
 615                                 g="${g#:}:$t"
 616                         done
 617                         GLIBC_TUNABLES=$g
 618                         export LD_PRELOAD GLIBC_TUNABLES
 619                 fi
 620         }
 621         teardown_malloc_check () {
 622                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 623                 unset LD_PRELOAD GLIBC_TUNABLES
 624         }
 625 fi
 626
 627 # Protect ourselves from common misconfiguration to export
 628 # CDPATH into the environment
 629 unset CDPATH
 630
 631 unset GREP_OPTIONS
 632 unset UNZIP
 633
 634 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 635 1|2|true)
 636         GIT_TRACE=4
 637         ;;
 638 esac
 639
 640 # Line feed
 641 LF='
 642 '
 643
 644 # Single quote
 645 SQ=\'
 646
 647 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 648 # when case-folding filenames
 649 u200c=$(printf '\342\200\214')
 650
 651 export _x05 _x35 LF u200c EMPTY_TREE EMPTY_BLOB ZERO_OID OID_REGEX
 652
 653 test "x$TERM" != "xdumb" && (
 654                 test -t 1 &&
 655                 tput bold >/dev/null 2>&1 &&
 656                 tput setaf 1 >/dev/null 2>&1 &&
 657                 tput sgr0 >/dev/null 2>&1
 658         ) &&
 659         color=t
 660
 661 if test -n "$color"
 662 then
 663         # Save the color control sequences now rather than run tput
 664         # each time say_color() is called.  This is done for two
 665         # reasons:
 666         #   * TERM will be changed to dumb
 667         #   * HOME will be changed to a temporary directory and tput
 668         #     might need to read ~/.terminfo from the original HOME
 669         #     directory to get the control sequences
 670         # Note:  This approach assumes the control sequences don't end
 671         # in a newline for any terminal of interest (command
 672         # substitutions strip trailing newlines).  Given that most
 673         # (all?) terminals in common use are related to ECMA-48, this
 674         # shouldn't be a problem.
 675         say_color_error=$(tput bold; tput setaf 1) # bold red
 676         say_color_skip=$(tput setaf 4) # blue
 677         say_color_warn=$(tput setaf 3) # brown/yellow
 678         say_color_pass=$(tput setaf 2) # green
 679         say_color_info=$(tput setaf 6) # cyan
 680         say_color_reset=$(tput sgr0)
 681         say_color_="" # no formatting for normal text
 682         say_color () {
 683                 test -z "$1" && test -n "$quiet" && return
 684                 eval "say_color_color=\$say_color_$1"
 685                 shift
 686                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 687         }
 688 else
 689         say_color() {
 690                 test -z "$1" && test -n "$quiet" && return
 691                 shift
 692                 printf "%s\n" "$*"
 693         }
 694 fi
 695
 696 USER_TERM="$TERM"
 697 TERM=dumb
 698 export TERM USER_TERM
 699
 700 # What is written by tests to stdout and stderr is sent to different places
 701 # depending on the test mode (e.g. /dev/null in non-verbose mode, piped to tee
 702 # with --tee option, etc.). We save the original stdin to FD #6 and stdout and
 703 # stderr to #5 and #7, so that the test framework can use them (e.g. for
 704 # printing errors within the test framework) independently of the test mode.
 705 exec 5>&1
 706 exec 6<&0
 707 exec 7>&2
 708
 709 _error_exit () {
 710         finalize_test_output
 711         GIT_EXIT_OK=t
 712         exit 1
 713 }
 714
 715 error () {
 716         say_color error "error: $*"
 717         _error_exit
 718 }
 719
 720 BUG () {
 721         error >&7 "bug in the test script: $*"
 722 }
 723
 724 BAIL_OUT () {
 725         test $# -ne 1 && BUG "1 param"
 726
 727         # Do not change "Bail out! " string. It's part of TAP syntax:
 728         # https://testanything.org/tap-specification.html
 729         local bail_out="Bail out! "
 730         local message="$1"
 731
 732         say_color >&5 error $bail_out "$message"
 733         _error_exit
 734 }
 735
 736 say () {
 737         say_color info "$*"
 738 }
 739
 740 if test -n "$HARNESS_ACTIVE"
 741 then
 742         if test "$verbose" = t || test -n "$verbose_only"
 743         then
 744                 BAIL_OUT 'verbose mode forbidden under TAP harness; try --verbose-log'
 745         fi
 746 fi
 747
 748 test "${test_description}" != "" ||
 749 error "Test script did not set test_description."
 750
 751 if test "$help" = "t"
 752 then
 753         printf '%s\n' "$test_description"
 754         exit 0
 755 fi
 756
 757 if test "$verbose_log" = "t"
 758 then
 759         exec 3>>"$GIT_TEST_TEE_OUTPUT_FILE" 4>&3
 760 elif test "$verbose" = "t"
 761 then
 762         exec 4>&2 3>&1
 763 else
 764         exec 4>/dev/null 3>/dev/null
 765 fi
 766
 767 # Send any "-x" output directly to stderr to avoid polluting tests
 768 # which capture stderr. We can do this unconditionally since it
 769 # has no effect if tracing isn't turned on.
 770 #
 771 # Note that this sets up the trace fd as soon as we assign the variable, so it
 772 # must come after the creation of descriptor 4 above. Likewise, we must never
 773 # unset this, as it has the side effect of closing descriptor 4, which we
 774 # use to show verbose tests to the user.
 775 #
 776 # Note also that we don't need or want to export it. The tracing is local to
 777 # this shell, and we would not want to influence any shells we exec.
 778 BASH_XTRACEFD=4
 779
 780 test_failure=0
 781 test_count=0
 782 test_fixed=0
 783 test_broken=0
 784 test_success=0
 785
 786 test_missing_prereq=
 787
 788 test_external_has_tap=0
 789
 790 die () {
 791         code=$?
 792         # This is responsible for running the atexit commands even when a
 793         # test script run with '--immediate' fails, or when the user hits
 794         # ctrl-C, i.e. when 'test_done' is not invoked at all.
 795         test_atexit_handler || code=$?
 796         if test -n "$GIT_EXIT_OK"
 797         then
 798                 exit $code
 799         else
 800                 echo >&5 "FATAL: Unexpected exit with code $code"
 801                 exit 1
 802         fi
 803 }
 804
 805 GIT_EXIT_OK=
 806 trap 'die' EXIT
 807 # Disable '-x' tracing, because with some shells, notably dash, it
 808 # prevents running the cleanup commands when a test script run with
 809 # '--verbose-log -x' is interrupted.
 810 trap '{ code=$?; set +x; } 2>/dev/null; exit $code' INT TERM HUP
 811
 812 # The user-facing functions are loaded from a separate file so that
 813 # test_perf subshells can have them too
 814 . "$TEST_DIRECTORY/test-lib-functions.sh"
 815
 816 # You are not expected to call test_ok_ and test_failure_ directly, use
 817 # the test_expect_* functions instead.
 818
 819 test_ok_ () {
 820         test_success=$(($test_success + 1))
 821         say_color "" "ok $test_count - $@"
 822         finalize_test_case_output ok "$@"
 823 }
 824
 825 _invert_exit_code_failure_end_blurb () {
 826         say_color warn "# faked up failures as TODO & now exiting with 0 due to --invert-exit-code"
 827 }
 828
 829 test_failure_ () {
 830         failure_label=$1
 831         test_failure=$(($test_failure + 1))
 832         local pfx=""
 833         if test -n "$invert_exit_code" # && test -n "$HARNESS_ACTIVE"
 834         then
 835                 pfx="# TODO induced breakage (--invert-exit-code):"
 836         fi
 837         say_color error "not ok $test_count - ${pfx:+$pfx }$1"
 838         shift
 839         printf '%s\n' "$*" | sed -e 's/^/#      /'
 840         if test -n "$immediate"
 841         then
 842                 say_color error "1..$test_count"
 843                 if test -n "$invert_exit_code"
 844                 then
 845                         finalize_test_output
 846                         _invert_exit_code_failure_end_blurb
 847                         GIT_EXIT_OK=t
 848                         exit 0
 849                 fi
 850                 check_test_results_san_file_ "$test_failure"
 851                 _error_exit
 852         fi
 853         finalize_test_case_output failure "$failure_label" "$@"
 854 }
 855
 856 test_known_broken_ok_ () {
 857         test_fixed=$(($test_fixed+1))
 858         say_color error "ok $test_count - $1 # TODO known breakage vanished"
 859         finalize_test_case_output fixed "$1"
 860 }
 861
 862 test_known_broken_failure_ () {
 863         test_broken=$(($test_broken+1))
 864         say_color warn "not ok $test_count - $1 # TODO known breakage"
 865         finalize_test_case_output broken "$1"
 866 }
 867
 868 test_debug () {
 869         test "$debug" = "" || eval "$1"
 870 }
 871
 872 match_pattern_list () {
 873         arg="$1"
 874         shift
 875         test -z "$*" && return 1
 876         # We need to use "$*" to get field-splitting, but we want to
 877         # disable globbing, since we are matching against an arbitrary
 878         # $arg, not what's in the filesystem. Using "set -f" accomplishes
 879         # that, but we must do it in a subshell to avoid impacting the
 880         # rest of the script. The exit value of the subshell becomes
 881         # the function's return value.
 882         (
 883                 set -f
 884                 for pattern_ in $*
 885                 do
 886                         case "$arg" in
 887                         $pattern_)
 888                                 exit 0
 889                                 ;;
 890                         esac
 891                 done
 892                 exit 1
 893         )
 894 }
 895
 896 match_test_selector_list () {
 897         operation="$1"
 898         shift
 899         title="$1"
 900         shift
 901         arg="$1"
 902         shift
 903         test -z "$1" && return 0
 904
 905         # Commas are accepted as separators.
 906         OLDIFS=$IFS
 907         IFS=','
 908         set -- $1
 909         IFS=$OLDIFS
 910
 911         # If the first selector is negative we include by default.
 912         include=
 913         case "$1" in
 914                 !*) include=t ;;
 915         esac
 916
 917         for selector
 918         do
 919                 orig_selector=$selector
 920
 921                 positive=t
 922                 case "$selector" in
 923                         !*)
 924                                 positive=
 925                                 selector=${selector##?}
 926                                 ;;
 927                 esac
 928
 929                 test -z "$selector" && continue
 930
 931                 case "$selector" in
 932                         *-*)
 933                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 934                                 then
 935                                         echo "error: $operation: invalid non-numeric in range" \
 936                                                 "start: '$orig_selector'" >&2
 937                                         exit 1
 938                                 fi
 939                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 940                                 then
 941                                         echo "error: $operation: invalid non-numeric in range" \
 942                                                 "end: '$orig_selector'" >&2
 943                                         exit 1
 944                                 fi
 945                                 ;;
 946                         *)
 947                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 948                                 then
 949                                         case "$title" in *${selector}*)
 950                                                 include=$positive
 951                                                 ;;
 952                                         esac
 953                                         continue
 954                                 fi
 955                 esac
 956
 957                 # Short cut for "obvious" cases
 958                 test -z "$include" && test -z "$positive" && continue
 959                 test -n "$include" && test -n "$positive" && continue
 960
 961                 case "$selector" in
 962                         -*)
 963                                 if test $arg -le ${selector#-}
 964                                 then
 965                                         include=$positive
 966                                 fi
 967                                 ;;
 968                         *-)
 969                                 if test $arg -ge ${selector%-}
 970                                 then
 971                                         include=$positive
 972                                 fi
 973                                 ;;
 974                         *-*)
 975                                 if test ${selector%%-*} -le $arg \
 976                                         && test $arg -le ${selector#*-}
 977                                 then
 978                                         include=$positive
 979                                 fi
 980                                 ;;
 981                         *)
 982                                 if test $arg -eq $selector
 983                                 then
 984                                         include=$positive
 985                                 fi
 986                                 ;;
 987                 esac
 988         done
 989
 990         test -n "$include"
 991 }
 992
 993 maybe_teardown_verbose () {
 994         test -z "$verbose_only" && return
 995         exec 4>/dev/null 3>/dev/null
 996         verbose=
 997 }
 998
 999 last_verbose=t
1000 maybe_setup_verbose () {
1001         test -z "$verbose_only" && return
1002         if match_pattern_list $test_count "$verbose_only"
1003         then
1004                 exec 4>&2 3>&1
1005                 # Emit a delimiting blank line when going from
1006                 # non-verbose to verbose.  Within verbose mode the
1007                 # delimiter is printed by test_expect_*.  The choice
1008                 # of the initial $last_verbose is such that before
1009                 # test 1, we do not print it.
1010                 test -z "$last_verbose" && echo >&3 ""
1011                 verbose=t
1012         else
1013                 exec 4>/dev/null 3>/dev/null
1014                 verbose=
1015         fi
1016         last_verbose=$verbose
1017 }
1018
1019 maybe_teardown_valgrind () {
1020         test -z "$GIT_VALGRIND" && return
1021         GIT_VALGRIND_ENABLED=
1022 }
1023
1024 maybe_setup_valgrind () {
1025         test -z "$GIT_VALGRIND" && return
1026         if test -z "$valgrind_only"
1027         then
1028                 GIT_VALGRIND_ENABLED=t
1029                 return
1030         fi
1031         GIT_VALGRIND_ENABLED=
1032         if match_pattern_list $test_count "$valgrind_only"
1033         then
1034                 GIT_VALGRIND_ENABLED=t
1035         fi
1036 }
1037
1038 trace_level_=0
1039 want_trace () {
1040         test "$trace" = t && {
1041                 test "$verbose" = t || test "$verbose_log" = t
1042         }
1043 }
1044
1045 # This is a separate function because some tests use
1046 # "return" to end a test_expect_success block early
1047 # (and we want to make sure we run any cleanup like
1048 # "set +x").
1049 test_eval_inner_ () {
1050         eval "$*"
1051 }
1052
1053 test_eval_ () {
1054         # If "-x" tracing is in effect, then we want to avoid polluting stderr
1055         # with non-test commands. But once in "set -x" mode, we cannot prevent
1056         # the shell from printing the "set +x" to turn it off (nor the saving
1057         # of $? before that). But we can make sure that the output goes to
1058         # /dev/null.
1059         #
1060         # There are a few subtleties here:
1061         #
1062         #   - we have to redirect descriptor 4 in addition to 2, to cover
1063         #     BASH_XTRACEFD
1064         #
1065         #   - the actual eval has to come before the redirection block (since
1066         #     it needs to see descriptor 4 to set up its stderr)
1067         #
1068         #   - likewise, any error message we print must be outside the block to
1069         #     access descriptor 4
1070         #
1071         #   - checking $? has to come immediately after the eval, but it must
1072         #     be _inside_ the block to avoid polluting the "set -x" output
1073         #
1074
1075         # Do not add anything extra (including LF) after '$*'
1076         test_eval_inner_ </dev/null >&3 2>&4 "
1077                 want_trace && trace_level_=$(($trace_level_+1)) && set -x
1078                 $*"
1079         {
1080                 test_eval_ret_=$?
1081                 if want_trace
1082                 then
1083                         test 1 = $trace_level_ && set +x
1084                         trace_level_=$(($trace_level_-1))
1085                 fi
1086         } 2>/dev/null 4>&2
1087
1088         if test "$test_eval_ret_" != 0 && want_trace
1089         then
1090                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
1091         fi
1092         return $test_eval_ret_
1093 }
1094
1095 fail_117 () {
1096         return 117
1097 }
1098
1099 test_run_ () {
1100         test_cleanup=:
1101         expecting_failure=$2
1102
1103         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
1104                 # 117 is magic because it is unlikely to match the exit
1105                 # code of other programs
1106                 test_eval_inner_ "fail_117 && $1" </dev/null >&3 2>&4
1107                 if test $? != 117
1108                 then
1109                         BUG "broken &&-chain: $1"
1110                 fi
1111         fi
1112
1113         setup_malloc_check
1114         test_eval_ "$1"
1115         eval_ret=$?
1116         teardown_malloc_check
1117
1118         if test -z "$immediate" || test $eval_ret = 0 ||
1119            test -n "$expecting_failure" && test "$test_cleanup" != ":"
1120         then
1121                 setup_malloc_check
1122                 test_eval_ "$test_cleanup"
1123                 teardown_malloc_check
1124         fi
1125         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
1126         then
1127                 echo ""
1128         fi
1129         return "$eval_ret"
1130 }
1131
1132 test_start_ () {
1133         test_count=$(($test_count+1))
1134         maybe_setup_verbose
1135         maybe_setup_valgrind
1136         start_test_case_output "$@"
1137 }
1138
1139 test_finish_ () {
1140         echo >&3 ""
1141         maybe_teardown_valgrind
1142         maybe_teardown_verbose
1143         if test -n "$GIT_TEST_TEE_OFFSET"
1144         then
1145                 GIT_TEST_TEE_OFFSET=$(test-tool path-utils file-size \
1146                         "$GIT_TEST_TEE_OUTPUT_FILE")
1147         fi
1148 }
1149
1150 test_skip () {
1151         to_skip=
1152         skipped_reason=
1153         if match_pattern_list $this_test.$test_count "$GIT_SKIP_TESTS"
1154         then
1155                 to_skip=t
1156                 skipped_reason="GIT_SKIP_TESTS"
1157         fi
1158         if test -z "$to_skip" && test -n "$run_list" &&
1159            ! match_test_selector_list '--run' "$1" $test_count "$run_list"
1160         then
1161                 to_skip=t
1162                 skipped_reason="--run"
1163         fi
1164         if test -z "$to_skip" && test -n "$test_prereq" &&
1165            ! test_have_prereq "$test_prereq"
1166         then
1167                 to_skip=t
1168
1169                 of_prereq=
1170                 if test "$missing_prereq" != "$test_prereq"
1171                 then
1172                         of_prereq=" of $test_prereq"
1173                 fi
1174                 skipped_reason="missing $missing_prereq${of_prereq}"
1175
1176                 # Keep a list of all the missing prereq for result aggregation
1177                 if test -z "$missing_prereq"
1178                 then
1179                         test_missing_prereq=$missing_prereq
1180                 else
1181                         test_missing_prereq="$test_missing_prereq,$missing_prereq"
1182                 fi
1183         fi
1184
1185         case "$to_skip" in
1186         t)
1187
1188                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
1189                 : true
1190                 finalize_test_case_output skip "$@"
1191                 ;;
1192         *)
1193                 false
1194                 ;;
1195         esac
1196 }
1197
1198 # stub; perf-lib overrides it
1199 test_at_end_hook_ () {
1200         :
1201 }
1202
1203 test_atexit_cleanup=:
1204 test_atexit_handler () {
1205         # In a succeeding test script 'test_atexit_handler' is invoked
1206         # twice: first from 'test_done', then from 'die' in the trap on
1207         # EXIT.
1208         # This condition and resetting 'test_atexit_cleanup' below makes
1209         # sure that the registered cleanup commands are run only once.
1210         test : != "$test_atexit_cleanup" || return 0
1211
1212         setup_malloc_check
1213         test_eval_ "$test_atexit_cleanup"
1214         test_atexit_cleanup=:
1215         teardown_malloc_check
1216 }
1217
1218 check_test_results_san_file_empty_ () {
1219         test -z "$TEST_RESULTS_SAN_FILE" ||
1220         test "$(nr_san_dir_leaks_)" = 0
1221 }
1222
1223 check_test_results_san_file_ () {
1224         if check_test_results_san_file_empty_
1225         then
1226                 return
1227         fi &&
1228         say_color error "$(cat "$TEST_RESULTS_SAN_FILE".*)" &&
1229
1230         if test -n "$passes_sanitize_leak" && test "$test_failure" = 0
1231         then
1232                 say "As TEST_PASSES_SANITIZE_LEAK=true and our logs show we're leaking, exit non-zero!" &&
1233                 invert_exit_code=t
1234         elif test -n "$passes_sanitize_leak"
1235         then
1236                 say "As TEST_PASSES_SANITIZE_LEAK=true and our logs show we're leaking, and we're failing for other reasons too..." &&
1237                 invert_exit_code=
1238         elif test -n "$sanitize_leak_check" && test "$test_failure" = 0
1239         then
1240                 say "As TEST_PASSES_SANITIZE_LEAK=true isn't set the above leak is 'ok' with GIT_TEST_PASSING_SANITIZE_LEAK=check" &&
1241                 invert_exit_code=
1242         elif test -n "$sanitize_leak_check"
1243         then
1244                 say "As TEST_PASSES_SANITIZE_LEAK=true isn't set the above leak is 'ok' with GIT_TEST_PASSING_SANITIZE_LEAK=check" &&
1245                 invert_exit_code=t
1246         elif test "$test_failure" = 0
1247         then
1248                 say "Our logs revealed a memory leak, exit non-zero!" &&
1249                 invert_exit_code=t
1250         else
1251                 say "Our logs revealed a memory leak..."
1252         fi
1253 }
1254
1255 test_done () {
1256         # Run the atexit commands _before_ the trash directory is
1257         # removed, so the commands can access pidfiles and socket files.
1258         test_atexit_handler
1259
1260         finalize_test_output
1261
1262         if test -z "$HARNESS_ACTIVE"
1263         then
1264                 mkdir -p "$TEST_RESULTS_DIR"
1265
1266                 cat >"$TEST_RESULTS_BASE.counts" <<-EOF
1267                 total $test_count
1268                 success $test_success
1269                 fixed $test_fixed
1270                 broken $test_broken
1271                 failed $test_failure
1272                 missing_prereq $test_missing_prereq
1273
1274                 EOF
1275         fi
1276
1277         if test -z "$passes_sanitize_leak" && test_bool_env TEST_PASSES_SANITIZE_LEAK false
1278         then
1279                 BAIL_OUT "Please, set TEST_PASSES_SANITIZE_LEAK before sourcing test-lib.sh"
1280         fi
1281
1282         if test "$test_fixed" != 0
1283         then
1284                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
1285         fi
1286         if test "$test_broken" != 0
1287         then
1288                 say_color warn "# still have $test_broken known breakage(s)"
1289         fi
1290         if test "$test_broken" != 0 || test "$test_fixed" != 0
1291         then
1292                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
1293                 msg="remaining $test_remaining test(s)"
1294         else
1295                 test_remaining=$test_count
1296                 msg="$test_count test(s)"
1297         fi
1298         case "$test_failure" in
1299         0)
1300                 if test $test_remaining -gt 0
1301                 then
1302                         say_color pass "# passed all $msg"
1303                 fi
1304
1305                 # Maybe print SKIP message
1306                 test -z "$skip_all" || skip_all="# SKIP $skip_all"
1307                 case "$test_count" in
1308                 0)
1309                         say "1..$test_count${skip_all:+ $skip_all}"
1310                         ;;
1311                 *)
1312                         test -z "$skip_all" ||
1313                         say_color warn "$skip_all"
1314                         say "1..$test_count"
1315                         ;;
1316                 esac
1317
1318                 if test -n "$stress" && test -n "$invert_exit_code"
1319                 then
1320                         # We're about to move our "$TRASH_DIRECTORY"
1321                         # to "$TRASH_DIRECTORY.stress-failed" if
1322                         # --stress is combined with
1323                         # --invert-exit-code.
1324                         say "with --stress and --invert-exit-code we're not removing '$TRASH_DIRECTORY'"
1325                 elif test -z "$debug" && test -n "$remove_trash"
1326                 then
1327                         test -d "$TRASH_DIRECTORY" ||
1328                         error "Tests passed but trash directory already removed before test cleanup; aborting"
1329
1330                         cd "$TRASH_DIRECTORY/.." &&
1331                         rm -fr "$TRASH_DIRECTORY" || {
1332                                 # try again in a bit
1333                                 sleep 5;
1334                                 rm -fr "$TRASH_DIRECTORY"
1335                         } ||
1336                         error "Tests passed but test cleanup failed; aborting"
1337                 fi
1338
1339                 check_test_results_san_file_ "$test_failure"
1340
1341                 if test -z "$skip_all" && test -n "$invert_exit_code"
1342                 then
1343                         say_color warn "# faking up non-zero exit with --invert-exit-code"
1344                         GIT_EXIT_OK=t
1345                         exit 1
1346                 fi
1347
1348                 test_at_end_hook_
1349
1350                 GIT_EXIT_OK=t
1351                 exit 0 ;;
1352
1353         *)
1354                 say_color error "# failed $test_failure among $msg"
1355                 say "1..$test_count"
1356
1357                 check_test_results_san_file_ "$test_failure"
1358
1359                 if test -n "$invert_exit_code"
1360                 then
1361                         _invert_exit_code_failure_end_blurb
1362                         GIT_EXIT_OK=t
1363                         exit 0
1364                 fi
1365
1366                 GIT_EXIT_OK=t
1367                 exit 1 ;;
1368
1369         esac
1370 }
1371
1372 if test -n "$valgrind"
1373 then
1374         make_symlink () {
1375                 test -h "$2" &&
1376                 test "$1" = "$(readlink "$2")" || {
1377                         # be super paranoid
1378                         if mkdir "$2".lock
1379                         then
1380                                 rm -f "$2" &&
1381                                 ln -s "$1" "$2" &&
1382                                 rm -r "$2".lock
1383                         else
1384                                 while test -d "$2".lock
1385                                 do
1386                                         say "Waiting for lock on $2."
1387                                         sleep 1
1388                                 done
1389                         fi
1390                 }
1391         }
1392
1393         make_valgrind_symlink () {
1394                 # handle only executables, unless they are shell libraries that
1395                 # need to be in the exec-path.
1396                 test -x "$1" ||
1397                 test "# " = "$(test_copy_bytes 2 <"$1")" ||
1398                 return;
1399
1400                 base=$(basename "$1")
1401                 case "$base" in
1402                 test-*)
1403                         symlink_target="$GIT_BUILD_DIR/t/helper/$base"
1404                         ;;
1405                 *)
1406                         symlink_target="$GIT_BUILD_DIR/$base"
1407                         ;;
1408                 esac
1409                 # do not override scripts
1410                 if test -x "$symlink_target" &&
1411                     test ! -d "$symlink_target" &&
1412                     test "#!" != "$(test_copy_bytes 2 <"$symlink_target")"
1413                 then
1414                         symlink_target=../valgrind.sh
1415                 fi
1416                 case "$base" in
1417                 *.sh|*.perl)
1418                         symlink_target=../unprocessed-script
1419                 esac
1420                 # create the link, or replace it if it is out of date
1421                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
1422         }
1423
1424         # override all git executables in TEST_DIRECTORY/..
1425         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
1426         mkdir -p "$GIT_VALGRIND"/bin
1427         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
1428         do
1429                 make_valgrind_symlink $file
1430         done
1431         # special-case the mergetools loadables
1432         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
1433         OLDIFS=$IFS
1434         IFS=:
1435         for path in $PATH
1436         do
1437                 ls "$path"/git-* 2> /dev/null |
1438                 while read file
1439                 do
1440                         make_valgrind_symlink "$file"
1441                 done
1442         done
1443         IFS=$OLDIFS
1444         PATH=$GIT_VALGRIND/bin:$PATH
1445         GIT_EXEC_PATH=$GIT_VALGRIND/bin
1446         export GIT_VALGRIND
1447         GIT_VALGRIND_MODE="$valgrind"
1448         export GIT_VALGRIND_MODE
1449         GIT_VALGRIND_ENABLED=t
1450         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
1451         export GIT_VALGRIND_ENABLED
1452 elif test -n "$GIT_TEST_INSTALLED"
1453 then
1454         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
1455         error "Cannot run git from $GIT_TEST_INSTALLED."
1456         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR/t/helper:$PATH
1457         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
1458 else # normal case, use ../bin-wrappers only unless $with_dashes:
1459         if test -n "$no_bin_wrappers"
1460         then
1461                 with_dashes=t
1462         else
1463                 git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
1464                 if ! test -x "$git_bin_dir/git"
1465                 then
1466                         if test -z "$with_dashes"
1467                         then
1468                                 say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
1469                         fi
1470                         with_dashes=t
1471                 fi
1472                 PATH="$git_bin_dir:$PATH"
1473         fi
1474         GIT_EXEC_PATH=$GIT_BUILD_DIR
1475         if test -n "$with_dashes"
1476         then
1477                 PATH="$GIT_BUILD_DIR:$GIT_BUILD_DIR/t/helper:$PATH"
1478         fi
1479 fi
1480 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
1481 GIT_CONFIG_NOSYSTEM=1
1482 GIT_ATTR_NOSYSTEM=1
1483 GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.."
1484 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM GIT_CEILING_DIRECTORIES
1485
1486 if test -z "$GIT_TEST_CMP"
1487 then
1488         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
1489         then
1490                 GIT_TEST_CMP="$DIFF -c"
1491         else
1492                 GIT_TEST_CMP="$DIFF -u"
1493         fi
1494 fi
1495
1496 GITPERLLIB="$GIT_BUILD_DIR"/perl/build/lib
1497 export GITPERLLIB
1498 test -d "$GIT_BUILD_DIR"/templates/blt || {
1499         BAIL_OUT "You haven't built things yet, have you?"
1500 }
1501
1502 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-tool$X
1503 then
1504         BAIL_OUT 'You need to build test-tool; Run "make t/helper/test-tool" in the source (toplevel) directory'
1505 fi
1506
1507 # Are we running this test at all?
1508 remove_trash=
1509 this_test=${0##*/}
1510 this_test=${this_test%%-*}
1511 if match_pattern_list "$this_test" "$GIT_SKIP_TESTS"
1512 then
1513         say_color info >&3 "skipping test $this_test altogether"
1514         skip_all="skip all tests in $this_test"
1515         test_done
1516 fi
1517
1518 BAIL_OUT_ENV_NEEDS_SANITIZE_LEAK () {
1519         BAIL_OUT "$1 has no effect except when compiled with SANITIZE=leak"
1520 }
1521
1522 if test -n "$SANITIZE_LEAK"
1523 then
1524         # Normalize with test_bool_env
1525         passes_sanitize_leak=
1526
1527         # We need to see TEST_PASSES_SANITIZE_LEAK in "test-tool
1528         # env-helper" (via test_bool_env)
1529         export TEST_PASSES_SANITIZE_LEAK
1530         if test_bool_env TEST_PASSES_SANITIZE_LEAK false
1531         then
1532                 passes_sanitize_leak=t
1533         fi
1534
1535         if test "$GIT_TEST_PASSING_SANITIZE_LEAK" = "check" ||
1536            test "$GIT_TEST_PASSING_SANITIZE_LEAK" = "check-failing"
1537         then
1538                 if test "$GIT_TEST_PASSING_SANITIZE_LEAK" = "check-failing" &&
1539                    test -n "$passes_sanitize_leak"
1540                 then
1541                         skip_all="skipping leak-free $this_test under GIT_TEST_PASSING_SANITIZE_LEAK=check-failing"
1542                         test_done
1543                 fi
1544
1545                 sanitize_leak_check=t
1546                 if test -n "$invert_exit_code"
1547                 then
1548                         BAIL_OUT "cannot use --invert-exit-code under GIT_TEST_PASSING_SANITIZE_LEAK=check"
1549                 fi
1550
1551                 if test -z "$passes_sanitize_leak"
1552                 then
1553                         say "in GIT_TEST_PASSING_SANITIZE_LEAK=check mode, setting --invert-exit-code for TEST_PASSES_SANITIZE_LEAK != true"
1554                         invert_exit_code=t
1555                 fi
1556         elif test -z "$passes_sanitize_leak" &&
1557              test_bool_env GIT_TEST_PASSING_SANITIZE_LEAK false
1558         then
1559                 skip_all="skipping $this_test under GIT_TEST_PASSING_SANITIZE_LEAK=true"
1560                 test_done
1561         fi
1562
1563         rm -rf "$TEST_RESULTS_SAN_DIR"
1564         if ! mkdir -p "$TEST_RESULTS_SAN_DIR"
1565         then
1566                 BAIL_OUT "cannot create $TEST_RESULTS_SAN_DIR"
1567         fi &&
1568         TEST_RESULTS_SAN_FILE="$TEST_RESULTS_SAN_DIR/$TEST_RESULTS_SAN_FILE_PFX"
1569
1570         # Don't litter *.leak dirs if there was nothing to report
1571         test_atexit "rmdir \"$TEST_RESULTS_SAN_DIR\" 2>/dev/null || :"
1572
1573         prepend_var LSAN_OPTIONS : dedup_token_length=9999
1574         prepend_var LSAN_OPTIONS : log_exe_name=1
1575         prepend_var LSAN_OPTIONS : log_path=\"$TEST_RESULTS_SAN_FILE\"
1576         export LSAN_OPTIONS
1577
1578 elif test "$GIT_TEST_PASSING_SANITIZE_LEAK" = "check" ||
1579      test "$GIT_TEST_PASSING_SANITIZE_LEAK" = "check-failing" ||
1580      test_bool_env GIT_TEST_PASSING_SANITIZE_LEAK false
1581 then
1582         BAIL_OUT_ENV_NEEDS_SANITIZE_LEAK "GIT_TEST_PASSING_SANITIZE_LEAK=true"
1583 fi
1584
1585 if test "${GIT_TEST_CHAIN_LINT:-1}" != 0 &&
1586    test "${GIT_TEST_EXT_CHAIN_LINT:-1}" != 0
1587 then
1588         "$PERL_PATH" "$TEST_DIRECTORY/chainlint.pl" "$0" ||
1589                 BUG "lint error (see 'LINT' annotations above)"
1590 fi
1591
1592 # Last-minute variable setup
1593 USER_HOME="$HOME"
1594 HOME="$TRASH_DIRECTORY"
1595 GNUPGHOME="$HOME/gnupg-home-not-used"
1596 export HOME GNUPGHOME USER_HOME
1597
1598 # "rm -rf" existing trash directory, even if a previous run left it
1599 # with bad permissions.
1600 remove_trash_directory () {
1601         dir="$1"
1602         if ! rm -rf "$dir" 2>/dev/null
1603         then
1604                 chmod -R u+rwx "$dir"
1605                 rm -rf "$dir"
1606         fi
1607         ! test -d "$dir"
1608 }
1609
1610 # Test repository
1611 remove_trash_directory "$TRASH_DIRECTORY" || {
1612         BAIL_OUT 'cannot prepare test area'
1613 }
1614
1615 remove_trash=t
1616 if test -z "$TEST_NO_CREATE_REPO"
1617 then
1618         git init \
1619             ${TEST_CREATE_REPO_NO_TEMPLATE:+--template=} \
1620             "$TRASH_DIRECTORY" >&3 2>&4 ||
1621         error "cannot run git init"
1622 else
1623         mkdir -p "$TRASH_DIRECTORY"
1624 fi
1625
1626 # Use -P to resolve symlinks in our working directory so that the cwd
1627 # in subprocesses like git equals our $PWD (for pathname comparisons).
1628 cd -P "$TRASH_DIRECTORY" || BAIL_OUT "cannot cd -P to \"$TRASH_DIRECTORY\""
1629
1630 start_test_output "$0"
1631
1632 # Convenience
1633 # A regexp to match 5 and 35 hexdigits
1634 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
1635 _x35="$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
1636
1637 test_oid_init
1638
1639 ZERO_OID=$(test_oid zero)
1640 OID_REGEX=$(echo $ZERO_OID | sed -e 's/0/[0-9a-f]/g')
1641 OIDPATH_REGEX=$(test_oid_to_path $ZERO_OID | sed -e 's/0/[0-9a-f]/g')
1642 EMPTY_TREE=$(test_oid empty_tree)
1643 EMPTY_BLOB=$(test_oid empty_blob)
1644
1645 # Provide an implementation of the 'yes' utility; the upper bound
1646 # limit is there to help Windows that cannot stop this loop from
1647 # wasting cycles when the downstream stops reading, so do not be
1648 # tempted to turn it into an infinite loop. cf. 6129c930 ("test-lib:
1649 # limit the output of the yes utility", 2016-02-02)
1650 yes () {
1651         if test $# = 0
1652         then
1653                 y=y
1654         else
1655                 y="$*"
1656         fi
1657
1658         i=0
1659         while test $i -lt 99
1660         do
1661                 echo "$y"
1662                 i=$(($i+1))
1663         done
1664 }
1665
1666 # The GIT_TEST_FAIL_PREREQS code hooks into test_set_prereq(), and
1667 # thus needs to be set up really early, and set an internal variable
1668 # for convenience so the hot test_set_prereq() codepath doesn't need
1669 # to call "test-tool env-helper" (via test_bool_env). Only do that work
1670 # if needed by seeing if GIT_TEST_FAIL_PREREQS is set at all.
1671 GIT_TEST_FAIL_PREREQS_INTERNAL=
1672 if test -n "$GIT_TEST_FAIL_PREREQS"
1673 then
1674         if test_bool_env GIT_TEST_FAIL_PREREQS false
1675         then
1676                 GIT_TEST_FAIL_PREREQS_INTERNAL=true
1677                 test_set_prereq FAIL_PREREQS
1678         fi
1679 else
1680         test_lazy_prereq FAIL_PREREQS '
1681                 test_bool_env GIT_TEST_FAIL_PREREQS false
1682         '
1683 fi
1684
1685 # Fix some commands on Windows, and other OS-specific things
1686 uname_s=$(uname -s)
1687 case $uname_s in
1688 *MINGW*)
1689         # Windows has its own (incompatible) sort and find
1690         sort () {
1691                 /usr/bin/sort "$@"
1692         }
1693         find () {
1694                 /usr/bin/find "$@"
1695         }
1696         # git sees Windows-style pwd
1697         pwd () {
1698                 builtin pwd -W
1699         }
1700         # no POSIX permissions
1701         # backslashes in pathspec are converted to '/'
1702         # exec does not inherit the PID
1703         test_set_prereq MINGW
1704         test_set_prereq NATIVE_CRLF
1705         test_set_prereq SED_STRIPS_CR
1706         test_set_prereq GREP_STRIPS_CR
1707         test_set_prereq WINDOWS
1708         GIT_TEST_CMP="GIT_DIR=/dev/null git diff --no-index --ignore-cr-at-eol --"
1709         ;;
1710 *CYGWIN*)
1711         test_set_prereq POSIXPERM
1712         test_set_prereq EXECKEEPSPID
1713         test_set_prereq CYGWIN
1714         test_set_prereq SED_STRIPS_CR
1715         test_set_prereq GREP_STRIPS_CR
1716         test_set_prereq WINDOWS
1717         ;;
1718 *)
1719         test_set_prereq POSIXPERM
1720         test_set_prereq BSLASHPSPEC
1721         test_set_prereq EXECKEEPSPID
1722         ;;
1723 esac
1724
1725 # Detect arches where a few things don't work
1726 uname_m=$(uname -m)
1727 case $uname_m in
1728 parisc* | hppa*)
1729         test_set_prereq HPPA
1730         ;;
1731 esac
1732
1733 case "$GIT_DEFAULT_REF_FORMAT" in
1734 files)
1735         test_set_prereq REFFILES;;
1736 reftable)
1737         test_set_prereq REFTABLE;;
1738 *)
1739         echo 2>&1 "error: unknown ref format $GIT_DEFAULT_REF_FORMAT"
1740         exit 1
1741         ;;
1742 esac
1743
1744 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1745 test -z "$NO_CURL" && test_set_prereq LIBCURL
1746 test -z "$NO_PERL" && test_set_prereq PERL
1747 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
1748 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1749 test -n "$USE_LIBPCRE2" && test_set_prereq PCRE
1750 test -n "$USE_LIBPCRE2" && test_set_prereq LIBPCRE2
1751 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1752 test -n "$SANITIZE_LEAK" && test_set_prereq SANITIZE_LEAK
1753 test -n "$GIT_VALGRIND_ENABLED" && test_set_prereq VALGRIND
1754
1755 if test -z "$GIT_TEST_CHECK_CACHE_TREE"
1756 then
1757         GIT_TEST_CHECK_CACHE_TREE=true
1758         export GIT_TEST_CHECK_CACHE_TREE
1759 fi
1760
1761 test_lazy_prereq PIPE '
1762         # test whether the filesystem supports FIFOs
1763         test_have_prereq !MINGW,!CYGWIN &&
1764         rm -f testfifo && mkfifo testfifo
1765 '
1766
1767 test_lazy_prereq SYMLINKS '
1768         # test whether the filesystem supports symbolic links
1769         ln -s x y && test -h y
1770 '
1771
1772 test_lazy_prereq SYMLINKS_WINDOWS '
1773         # test whether symbolic links are enabled on Windows
1774         test_have_prereq MINGW &&
1775         cmd //c "mklink y x" &> /dev/null && test -h y
1776 '
1777
1778 test_lazy_prereq FILEMODE '
1779         test "$(git config --bool core.filemode)" = true
1780 '
1781
1782 test_lazy_prereq CASE_INSENSITIVE_FS '
1783         echo good >CamelCase &&
1784         echo bad >camelcase &&
1785         test "$(cat CamelCase)" != good
1786 '
1787
1788 test_lazy_prereq FUNNYNAMES '
1789         test_have_prereq !MINGW &&
1790         touch -- \
1791                 "FUNNYNAMES tab embedded" \
1792                 "FUNNYNAMES \"quote embedded\"" \
1793                 "FUNNYNAMES newline
1794 embedded" 2>/dev/null &&
1795         rm -- \
1796                 "FUNNYNAMES tab embedded" \
1797                 "FUNNYNAMES \"quote embedded\"" \
1798                 "FUNNYNAMES newline
1799 embedded" 2>/dev/null
1800 '
1801
1802 test_lazy_prereq UTF8_NFD_TO_NFC '
1803         # check whether FS converts nfd unicode to nfc
1804         auml=$(printf "\303\244")
1805         aumlcdiar=$(printf "\141\314\210")
1806         >"$auml" &&
1807         test -f "$aumlcdiar"
1808 '
1809
1810 test_lazy_prereq AUTOIDENT '
1811         sane_unset GIT_AUTHOR_NAME &&
1812         sane_unset GIT_AUTHOR_EMAIL &&
1813         git var GIT_AUTHOR_IDENT
1814 '
1815
1816 test_lazy_prereq EXPENSIVE '
1817         test -n "$GIT_TEST_LONG"
1818 '
1819
1820 test_lazy_prereq EXPENSIVE_ON_WINDOWS '
1821         test_have_prereq EXPENSIVE || test_have_prereq !MINGW,!CYGWIN
1822 '
1823
1824 test_lazy_prereq USR_BIN_TIME '
1825         test -x /usr/bin/time
1826 '
1827
1828 test_lazy_prereq NOT_ROOT '
1829         uid=$(id -u) &&
1830         test "$uid" != 0
1831 '
1832
1833 test_lazy_prereq JGIT '
1834         jgit --version
1835 '
1836
1837 # SANITY is about "can you correctly predict what the filesystem would
1838 # do by only looking at the permission bits of the files and
1839 # directories?"  A typical example of !SANITY is running the test
1840 # suite as root, where a test may expect "chmod -r file && cat file"
1841 # to fail because file is supposed to be unreadable after a successful
1842 # chmod.  In an environment (i.e. combination of what filesystem is
1843 # being used and who is running the tests) that lacks SANITY, you may
1844 # be able to delete or create a file when the containing directory
1845 # doesn't have write permissions, or access a file even if the
1846 # containing directory doesn't have read or execute permissions.
1847
1848 test_lazy_prereq SANITY '
1849         mkdir SANETESTD.1 SANETESTD.2 &&
1850
1851         chmod +w SANETESTD.1 SANETESTD.2 &&
1852         >SANETESTD.1/x 2>SANETESTD.2/x &&
1853         chmod -w SANETESTD.1 &&
1854         chmod -r SANETESTD.1/x &&
1855         chmod -rx SANETESTD.2 ||
1856         BUG "cannot prepare SANETESTD"
1857
1858         ! test -r SANETESTD.1/x &&
1859         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1860         status=$?
1861
1862         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1863         rm -rf SANETESTD.1 SANETESTD.2 ||
1864         BUG "cannot clean SANETESTD"
1865         return $status
1866 '
1867
1868 test FreeBSD != $uname_s || GIT_UNZIP=${GIT_UNZIP:-/usr/local/bin/unzip}
1869 GIT_UNZIP=${GIT_UNZIP:-unzip}
1870 test_lazy_prereq UNZIP '
1871         "$GIT_UNZIP" -v
1872         test $? -ne 127
1873 '
1874
1875 run_with_limited_cmdline () {
1876         (ulimit -s 128 && "$@")
1877 }
1878
1879 test_lazy_prereq CMDLINE_LIMIT '
1880         test_have_prereq !HPPA,!MINGW,!CYGWIN &&
1881         run_with_limited_cmdline true
1882 '
1883
1884 run_with_limited_stack () {
1885         (ulimit -s 128 && "$@")
1886 }
1887
1888 test_lazy_prereq ULIMIT_STACK_SIZE '
1889         test_have_prereq !HPPA,!MINGW,!CYGWIN &&
1890         run_with_limited_stack true
1891 '
1892
1893 run_with_limited_open_files () {
1894         (ulimit -n 32 && "$@")
1895 }
1896
1897 test_lazy_prereq ULIMIT_FILE_DESCRIPTORS '
1898         test_have_prereq !MINGW,!CYGWIN &&
1899         run_with_limited_open_files true
1900 '
1901
1902 build_option () {
1903         git version --build-options |
1904         sed -ne "s/^$1: //p"
1905 }
1906
1907 test_lazy_prereq SIZE_T_IS_64BIT '
1908         test 8 -eq "$(build_option sizeof-size_t)"
1909 '
1910
1911 test_lazy_prereq LONG_IS_64BIT '
1912         test 8 -le "$(build_option sizeof-long)"
1913 '
1914
1915 test_lazy_prereq TIME_IS_64BIT 'test-tool date is64bit'
1916 test_lazy_prereq TIME_T_IS_64BIT 'test-tool date time_t-is64bit'
1917
1918 test_lazy_prereq CURL '
1919         curl --version
1920 '
1921
1922 # SHA1 is a test if the hash algorithm in use is SHA-1.  This is both for tests
1923 # which will not work with other hash algorithms and tests that work but don't
1924 # test anything meaningful (e.g. special values which cause short collisions).
1925 test_lazy_prereq SHA1 '
1926         case "$GIT_DEFAULT_HASH" in
1927         sha1) true ;;
1928         "") test $(git hash-object /dev/null) = e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 ;;
1929         *) false ;;
1930         esac
1931 '
1932
1933 test_lazy_prereq DEFAULT_REPO_FORMAT '
1934         test_have_prereq SHA1,REFFILES
1935 '
1936
1937 # Ensure that no test accidentally triggers a Git command
1938 # that runs the actual maintenance scheduler, affecting a user's
1939 # system permanently.
1940 # Tests that verify the scheduler integration must set this locally
1941 # to avoid errors.
1942 GIT_TEST_MAINT_SCHEDULER="none:exit 1"
1943 export GIT_TEST_MAINT_SCHEDULER
1944
1945 # Does this platform support `git fsmonitor--daemon`
1946 #
1947 test_lazy_prereq FSMONITOR_DAEMON '
1948         git version --build-options >output &&
1949         grep "feature: fsmonitor--daemon" output
1950 '