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