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