t/test-lib.sh

   1 # Test framework for git.  See t/README for usage.
   2 #
   3 # Copyright (c) 2005 Junio C Hamano
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see http://www.gnu.org/licenses/ .
  17
  18 # Test the binaries we have just built.  The tests are kept in
  19 # t/ subdirectory and are run in 'trash directory' subdirectory.
  20 if test -z "$TEST_DIRECTORY"
  21 then
  22         # We allow tests to override this, in case they want to run tests
  23         # outside of t/, e.g. for running tests on the test library
  24         # itself.
  25         TEST_DIRECTORY=$(pwd)
  26 else
  27         # ensure that TEST_DIRECTORY is an absolute path so that it
  28         # is valid even if the current working directory is changed
  29         TEST_DIRECTORY=$(cd "$TEST_DIRECTORY" && pwd) || exit 1
  30 fi
  31 if test -z "$TEST_OUTPUT_DIRECTORY"
  32 then
  33         # Similarly, override this to store the test-results subdir
  34         # elsewhere
  35         TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  36 fi
  37 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  38
  39 # If we were built with ASAN, it may complain about leaks
  40 # of program-lifetime variables. Disable it by default to lower
  41 # the noise level. This needs to happen at the start of the script,
  42 # before we even do our "did we build git yet" check (since we don't
  43 # want that one to complain to stderr).
  44 : ${ASAN_OPTIONS=detect_leaks=0:abort_on_error=1}
  45 export ASAN_OPTIONS
  46
  47 # If LSAN is in effect we _do_ want leak checking, but we still
  48 # want to abort so that we notice the problems.
  49 : ${LSAN_OPTIONS=abort_on_error=1}
  50 export LSAN_OPTIONS
  51
  52 if test ! -f "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  53 then
  54         echo >&2 'error: GIT-BUILD-OPTIONS missing (has Git been built?).'
  55         exit 1
  56 fi
  57 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  58 export PERL_PATH SHELL_PATH
  59
  60 # In t0000, we need to override test directories of nested testcases. In case
  61 # the developer has TEST_OUTPUT_DIRECTORY part of his build options, then we'd
  62 # reset this value to instead contain what the developer has specified. We thus
  63 # have this knob to allow overriding the directory.
  64 if test -n "${TEST_OUTPUT_DIRECTORY_OVERRIDE}"
  65 then
  66         TEST_OUTPUT_DIRECTORY="${TEST_OUTPUT_DIRECTORY_OVERRIDE}"
  67 fi
  68
  69 # Disallow the use of abbreviated options in the test suite by default
  70 if test -z "${GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS}"
  71 then
  72         GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS=true
  73         export GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS
  74 fi
  75
  76 # Explicitly set the default branch name for testing, to avoid the
  77 # transitory "git init" warning under --verbose.
  78 : ${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME:=master}
  79 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  80
  81 ################################################################
  82 # It appears that people try to run tests without building...
  83 "${GIT_TEST_INSTALLED:-$GIT_BUILD_DIR}/git$X" >/dev/null
  84 if test $? != 1
  85 then
  86         if test -n "$GIT_TEST_INSTALLED"
  87         then
  88                 echo >&2 "error: there is no working Git at '$GIT_TEST_INSTALLED'"
  89         else
  90                 echo >&2 'error: you do not seem to have built git yet.'
  91         fi
  92         exit 1
  93 fi
  94
  95 store_arg_to=
  96 opt_required_arg=
  97 # $1: option string
  98 # $2: name of the var where the arg will be stored
  99 mark_option_requires_arg () {
 100         if test -n "$opt_required_arg"
 101         then
 102                 echo "error: options that require args cannot be bundled" \
 103                         "together: '$opt_required_arg' and '$1'" >&2
 104                 exit 1
 105         fi
 106         opt_required_arg=$1
 107         store_arg_to=$2
 108 }
 109
 110 parse_option () {
 111         local opt="$1"
 112
 113         case "$opt" in
 114         -d|--d|--de|--deb|--debu|--debug)
 115                 debug=t ;;
 116         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 117                 immediate=t ;;
 118         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 119                 GIT_TEST_LONG=t; export GIT_TEST_LONG ;;
 120         -r)
 121                 mark_option_requires_arg "$opt" run_list
 122                 ;;
 123         --run=*)
 124                 run_list=${opt#--*=} ;;
 125         -h|--h|--he|--hel|--help)
 126                 help=t ;;
 127         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 128                 verbose=t ;;
 129         --verbose-only=*)
 130                 verbose_only=${opt#--*=}
 131                 ;;
 132         -q|--q|--qu|--qui|--quie|--quiet)
 133                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 134                 # passed without the ok/not ok details is always an error.
 135                 test -z "$HARNESS_ACTIVE" && quiet=t ;;
 136         --with-dashes)
 137                 with_dashes=t ;;
 138         --no-bin-wrappers)
 139                 no_bin_wrappers=t ;;
 140         --no-color)
 141                 color= ;;
 142         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 143                 valgrind=memcheck
 144                 tee=t
 145                 ;;
 146         --valgrind=*)
 147                 valgrind=${opt#--*=}
 148                 tee=t
 149                 ;;
 150         --valgrind-only=*)
 151                 valgrind_only=${opt#--*=}
 152                 tee=t
 153                 ;;
 154         --tee)
 155                 tee=t ;;
 156         --root=*)
 157                 root=${opt#--*=} ;;
 158         --chain-lint)
 159                 GIT_TEST_CHAIN_LINT=1 ;;
 160         --no-chain-lint)
 161                 GIT_TEST_CHAIN_LINT=0 ;;
 162         -x)
 163                 trace=t ;;
 164         -V|--verbose-log)
 165                 verbose_log=t
 166                 tee=t
 167                 ;;
 168         --write-junit-xml)
 169                 write_junit_xml=t
 170                 ;;
 171         --stress)
 172                 stress=t ;;
 173         --stress=*)
 174                 echo "error: --stress does not accept an argument: '$opt'" >&2
 175                 echo "did you mean --stress-jobs=${opt#*=} or --stress-limit=${opt#*=}?" >&2
 176                 exit 1
 177                 ;;
 178         --stress-jobs=*)
 179                 stress=t;
 180                 stress_jobs=${opt#--*=}
 181                 case "$stress_jobs" in
 182                 *[!0-9]*|0*|"")
 183                         echo "error: --stress-jobs=<N> requires the number of jobs to run" >&2
 184                         exit 1
 185                         ;;
 186                 *)      # Good.
 187                         ;;
 188                 esac
 189                 ;;
 190         --stress-limit=*)
 191                 stress=t;
 192                 stress_limit=${opt#--*=}
 193                 case "$stress_limit" in
 194                 *[!0-9]*|0*|"")
 195                         echo "error: --stress-limit=<N> requires the number of repetitions" >&2
 196                         exit 1
 197                         ;;
 198                 *)      # Good.
 199                         ;;
 200                 esac
 201                 ;;
 202         *)
 203                 echo "error: unknown test option '$opt'" >&2; exit 1 ;;
 204         esac
 205 }
 206
 207 # Parse options while taking care to leave $@ intact, so we will still
 208 # have all the original command line options when executing the test
 209 # script again for '--tee' and '--verbose-log' later.
 210 for opt
 211 do
 212         if test -n "$store_arg_to"
 213         then
 214                 eval $store_arg_to=\$opt
 215                 store_arg_to=
 216                 opt_required_arg=
 217                 continue
 218         fi
 219
 220         case "$opt" in
 221         --*|-?)
 222                 parse_option "$opt" ;;
 223         -?*)
 224                 # bundled short options must be fed separately to parse_option
 225                 opt=${opt#-}
 226                 while test -n "$opt"
 227                 do
 228                         extra=${opt#?}
 229                         this=${opt%$extra}
 230                         opt=$extra
 231                         parse_option "-$this"
 232                 done
 233                 ;;
 234         *)
 235                 echo "error: unknown test option '$opt'" >&2; exit 1 ;;
 236         esac
 237 done
 238 if test -n "$store_arg_to"
 239 then
 240         echo "error: $opt_required_arg requires an argument" >&2
 241         exit 1
 242 fi
 243
 244 if test -n "$valgrind_only"
 245 then
 246         test -z "$valgrind" && valgrind=memcheck
 247         test -z "$verbose" && verbose_only="$valgrind_only"
 248 elif test -n "$valgrind"
 249 then
 250         test -z "$verbose_log" && verbose=t
 251 fi
 252
 253 if test -n "$stress"
 254 then
 255         verbose=t
 256         trace=t
 257         immediate=t
 258 fi
 259
 260 TEST_STRESS_JOB_SFX="${GIT_TEST_STRESS_JOB_NR:+.stress-$GIT_TEST_STRESS_JOB_NR}"
 261 TEST_NAME="$(basename "$0" .sh)"
 262 TEST_NUMBER="${TEST_NAME%%-*}"
 263 TEST_NUMBER="${TEST_NUMBER#t}"
 264 TEST_RESULTS_DIR="$TEST_OUTPUT_DIRECTORY/test-results"
 265 TEST_RESULTS_BASE="$TEST_RESULTS_DIR/$TEST_NAME$TEST_STRESS_JOB_SFX"
 266 TRASH_DIRECTORY="trash directory.$TEST_NAME$TEST_STRESS_JOB_SFX"
 267 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 268 case "$TRASH_DIRECTORY" in
 269 /*) ;; # absolute path is good
 270  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 271 esac
 272
 273 # If --stress was passed, run this test repeatedly in several parallel loops.
 274 if test "$GIT_TEST_STRESS_STARTED" = "done"
 275 then
 276         : # Don't stress test again.
 277 elif test -n "$stress"
 278 then
 279         if test -n "$stress_jobs"
 280         then
 281                 job_count=$stress_jobs
 282         elif test -n "$GIT_TEST_STRESS_LOAD"
 283         then
 284                 job_count="$GIT_TEST_STRESS_LOAD"
 285         elif job_count=$(getconf _NPROCESSORS_ONLN 2>/dev/null) &&
 286              test -n "$job_count"
 287         then
 288                 job_count=$((2 * $job_count))
 289         else
 290                 job_count=8
 291         fi
 292
 293         mkdir -p "$TEST_RESULTS_DIR"
 294         stressfail="$TEST_RESULTS_BASE.stress-failed"
 295         rm -f "$stressfail"
 296
 297         stress_exit=0
 298         trap '
 299                 kill $job_pids 2>/dev/null
 300                 wait
 301                 stress_exit=1
 302         ' TERM INT HUP
 303
 304         job_pids=
 305         job_nr=0
 306         while test $job_nr -lt "$job_count"
 307         do
 308                 (
 309                         GIT_TEST_STRESS_STARTED=done
 310                         GIT_TEST_STRESS_JOB_NR=$job_nr
 311                         export GIT_TEST_STRESS_STARTED GIT_TEST_STRESS_JOB_NR
 312
 313                         trap '
 314                                 kill $test_pid 2>/dev/null
 315                                 wait
 316                                 exit 1
 317                         ' TERM INT
 318
 319                         cnt=1
 320                         while ! test -e "$stressfail" &&
 321                               { test -z "$stress_limit" ||
 322                                 test $cnt -le $stress_limit ; }
 323                         do
 324                                 $TEST_SHELL_PATH "$0" "$@" >"$TEST_RESULTS_BASE.stress-$job_nr.out" 2>&1 &
 325                                 test_pid=$!
 326
 327                                 if wait $test_pid
 328                                 then
 329                                         printf "OK   %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 330                                 else
 331                                         echo $GIT_TEST_STRESS_JOB_NR >>"$stressfail"
 332                                         printf "FAIL %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 333                                 fi
 334                                 cnt=$(($cnt + 1))
 335                         done
 336                 ) &
 337                 job_pids="$job_pids $!"
 338                 job_nr=$(($job_nr + 1))
 339         done
 340
 341         wait
 342
 343         if test -f "$stressfail"
 344         then
 345                 stress_exit=1
 346                 echo "Log(s) of failed test run(s):"
 347                 for failed_job_nr in $(sort -n "$stressfail")
 348                 do
 349                         echo "Contents of '$TEST_RESULTS_BASE.stress-$failed_job_nr.out':"
 350                         cat "$TEST_RESULTS_BASE.stress-$failed_job_nr.out"
 351                 done
 352                 rm -rf "$TRASH_DIRECTORY.stress-failed"
 353                 # Move the last one.
 354                 mv "$TRASH_DIRECTORY.stress-$failed_job_nr" "$TRASH_DIRECTORY.stress-failed"
 355         fi
 356
 357         exit $stress_exit
 358 fi
 359
 360 # if --tee was passed, write the output not only to the terminal, but
 361 # additionally to the file test-results/$BASENAME.out, too.
 362 if test "$GIT_TEST_TEE_STARTED" = "done"
 363 then
 364         : # do not redirect again
 365 elif test -n "$tee"
 366 then
 367         mkdir -p "$TEST_RESULTS_DIR"
 368
 369         # Make this filename available to the sub-process in case it is using
 370         # --verbose-log.
 371         GIT_TEST_TEE_OUTPUT_FILE=$TEST_RESULTS_BASE.out
 372         export GIT_TEST_TEE_OUTPUT_FILE
 373
 374         # Truncate before calling "tee -a" to get rid of the results
 375         # from any previous runs.
 376         >"$GIT_TEST_TEE_OUTPUT_FILE"
 377
 378         (GIT_TEST_TEE_STARTED=done ${TEST_SHELL_PATH} "$0" "$@" 2>&1;
 379          echo $? >"$TEST_RESULTS_BASE.exit") | tee -a "$GIT_TEST_TEE_OUTPUT_FILE"
 380         test "$(cat "$TEST_RESULTS_BASE.exit")" = 0
 381         exit
 382 fi
 383
 384 if test -n "$trace" && test -n "$test_untraceable"
 385 then
 386         # '-x' tracing requested, but this test script can't be reliably
 387         # traced, unless it is run with a Bash version supporting
 388         # BASH_XTRACEFD (introduced in Bash v4.1).
 389         #
 390         # Perform this version check _after_ the test script was
 391         # potentially re-executed with $TEST_SHELL_PATH for '--tee' or
 392         # '--verbose-log', so the right shell is checked and the
 393         # warning is issued only once.
 394         if test -n "$BASH_VERSION" && eval '
 395              test ${BASH_VERSINFO[0]} -gt 4 || {
 396                test ${BASH_VERSINFO[0]} -eq 4 &&
 397                test ${BASH_VERSINFO[1]} -ge 1
 398              }
 399            '
 400         then
 401                 : Executed by a Bash version supporting BASH_XTRACEFD.  Good.
 402         else
 403                 echo >&2 "warning: ignoring -x; '$0' is untraceable without BASH_XTRACEFD"
 404                 trace=
 405         fi
 406 fi
 407 if test -n "$trace" && test -z "$verbose_log"
 408 then
 409         verbose=t
 410 fi
 411
 412 # Since bash 5.0, checkwinsize is enabled by default which does
 413 # update the COLUMNS variable every time a non-builtin command
 414 # completes, even for non-interactive shells.
 415 # Disable that since we are aiming for repeatability.
 416 test -n "$BASH_VERSION" && shopt -u checkwinsize 2>/dev/null
 417
 418 # For repeatability, reset the environment to known value.
 419 # TERM is sanitized below, after saving color control sequences.
 420 LANG=C
 421 LC_ALL=C
 422 PAGER=cat
 423 TZ=UTC
 424 COLUMNS=80
 425 export LANG LC_ALL PAGER TZ COLUMNS
 426 EDITOR=:
 427
 428 # A call to "unset" with no arguments causes at least Solaris 10
 429 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
 430 # deriving from the command substitution clustered with the other
 431 # ones.
 432 unset VISUAL EMAIL LANGUAGE $("$PERL_PATH" -e '
 433         my @env = keys %ENV;
 434         my $ok = join("|", qw(
 435                 TRACE
 436                 DEBUG
 437                 TEST
 438                 .*_TEST
 439                 PROVE
 440                 VALGRIND
 441                 UNZIP
 442                 PERF_
 443                 CURL_VERBOSE
 444                 TRACE_CURL
 445         ));
 446         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 447         print join("\n", @vars);
 448 ')
 449 unset XDG_CACHE_HOME
 450 unset XDG_CONFIG_HOME
 451 unset GITPERLLIB
 452 TEST_AUTHOR_LOCALNAME=author
 453 TEST_AUTHOR_DOMAIN=example.com
 454 GIT_AUTHOR_EMAIL=${TEST_AUTHOR_LOCALNAME}@${TEST_AUTHOR_DOMAIN}
 455 GIT_AUTHOR_NAME='A U Thor'
 456 GIT_AUTHOR_DATE='1112354055 +0200'
 457 TEST_COMMITTER_LOCALNAME=committer
 458 TEST_COMMITTER_DOMAIN=example.com
 459 GIT_COMMITTER_EMAIL=${TEST_COMMITTER_LOCALNAME}@${TEST_COMMITTER_DOMAIN}
 460 GIT_COMMITTER_NAME='C O Mitter'
 461 GIT_COMMITTER_DATE='1112354055 +0200'
 462 GIT_MERGE_VERBOSITY=5
 463 GIT_MERGE_AUTOEDIT=no
 464 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 465 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 466 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 467 export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 468 export EDITOR
 469
 470 GIT_DEFAULT_HASH="${GIT_TEST_DEFAULT_HASH:-sha1}"
 471 export GIT_DEFAULT_HASH
 472 GIT_TEST_MERGE_ALGORITHM="${GIT_TEST_MERGE_ALGORITHM:-ort}"
 473 export GIT_TEST_MERGE_ALGORITHM
 474
 475 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 476 GIT_TRACE_BARE=1
 477 export GIT_TRACE_BARE
 478
 479 # Use specific version of the index file format
 480 if test -n "${GIT_TEST_INDEX_VERSION:+isset}"
 481 then
 482         GIT_INDEX_VERSION="$GIT_TEST_INDEX_VERSION"
 483         export GIT_INDEX_VERSION
 484 fi
 485
 486 if test -n "$GIT_TEST_PERL_FATAL_WARNINGS"
 487 then
 488         GIT_PERL_FATAL_WARNINGS=1
 489         export GIT_PERL_FATAL_WARNINGS
 490 fi
 491
 492 # Add libc MALLOC and MALLOC_PERTURB test
 493 # only if we are not executing the test with valgrind
 494 if test -n "$valgrind" ||
 495    test -n "$TEST_NO_MALLOC_CHECK"
 496 then
 497         setup_malloc_check () {
 498                 : nothing
 499         }
 500         teardown_malloc_check () {
 501                 : nothing
 502         }
 503 else
 504         setup_malloc_check () {
 505                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 506                 export MALLOC_CHECK_ MALLOC_PERTURB_
 507         }
 508         teardown_malloc_check () {
 509                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 510         }
 511 fi
 512
 513 # Protect ourselves from common misconfiguration to export
 514 # CDPATH into the environment
 515 unset CDPATH
 516
 517 unset GREP_OPTIONS
 518 unset UNZIP
 519
 520 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 521 1|2|true)
 522         GIT_TRACE=4
 523         ;;
 524 esac
 525
 526 # Line feed
 527 LF='
 528 '
 529
 530 # Single quote
 531 SQ=\'
 532
 533 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 534 # when case-folding filenames
 535 u200c=$(printf '\342\200\214')
 536
 537 export _x05 _x35 LF u200c EMPTY_TREE EMPTY_BLOB ZERO_OID OID_REGEX
 538
 539 # Each test should start with something like this, after copyright notices:
 540 #
 541 # test_description='Description of this test...
 542 # This test checks if command xyzzy does the right thing...
 543 # '
 544 # . ./test-lib.sh
 545 test "x$TERM" != "xdumb" && (
 546                 test -t 1 &&
 547                 tput bold >/dev/null 2>&1 &&
 548                 tput setaf 1 >/dev/null 2>&1 &&
 549                 tput sgr0 >/dev/null 2>&1
 550         ) &&
 551         color=t
 552
 553 if test -n "$color"
 554 then
 555         # Save the color control sequences now rather than run tput
 556         # each time say_color() is called.  This is done for two
 557         # reasons:
 558         #   * TERM will be changed to dumb
 559         #   * HOME will be changed to a temporary directory and tput
 560         #     might need to read ~/.terminfo from the original HOME
 561         #     directory to get the control sequences
 562         # Note:  This approach assumes the control sequences don't end
 563         # in a newline for any terminal of interest (command
 564         # substitutions strip trailing newlines).  Given that most
 565         # (all?) terminals in common use are related to ECMA-48, this
 566         # shouldn't be a problem.
 567         say_color_error=$(tput bold; tput setaf 1) # bold red
 568         say_color_skip=$(tput setaf 4) # blue
 569         say_color_warn=$(tput setaf 3) # brown/yellow
 570         say_color_pass=$(tput setaf 2) # green
 571         say_color_info=$(tput setaf 6) # cyan
 572         say_color_reset=$(tput sgr0)
 573         say_color_="" # no formatting for normal text
 574         say_color () {
 575                 test -z "$1" && test -n "$quiet" && return
 576                 eval "say_color_color=\$say_color_$1"
 577                 shift
 578                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 579         }
 580 else
 581         say_color() {
 582                 test -z "$1" && test -n "$quiet" && return
 583                 shift
 584                 printf "%s\n" "$*"
 585         }
 586 fi
 587
 588 USER_TERM="$TERM"
 589 TERM=dumb
 590 export TERM USER_TERM
 591
 592 _error_exit () {
 593         finalize_junit_xml
 594         GIT_EXIT_OK=t
 595         exit 1
 596 }
 597
 598 error () {
 599         say_color error "error: $*"
 600         _error_exit
 601 }
 602
 603 BUG () {
 604         error >&7 "bug in the test script: $*"
 605 }
 606
 607 BAIL_OUT () {
 608         test $# -ne 1 && BUG "1 param"
 609
 610         # Do not change "Bail out! " string. It's part of TAP syntax:
 611         # https://testanything.org/tap-specification.html
 612         local bail_out="Bail out! "
 613         local message="$1"
 614
 615         say_color error $bail_out "$message"
 616         _error_exit
 617 }
 618
 619 say () {
 620         say_color info "$*"
 621 }
 622
 623 if test -n "$HARNESS_ACTIVE"
 624 then
 625         if test "$verbose" = t || test -n "$verbose_only"
 626         then
 627                 BAIL_OUT 'verbose mode forbidden under TAP harness; try --verbose-log'
 628         fi
 629 fi
 630
 631 test "${test_description}" != "" ||
 632 error "Test script did not set test_description."
 633
 634 if test "$help" = "t"
 635 then
 636         printf '%s\n' "$test_description"
 637         exit 0
 638 fi
 639
 640 exec 5>&1
 641 exec 6<&0
 642 exec 7>&2
 643 if test "$verbose_log" = "t"
 644 then
 645         exec 3>>"$GIT_TEST_TEE_OUTPUT_FILE" 4>&3
 646 elif test "$verbose" = "t"
 647 then
 648         exec 4>&2 3>&1
 649 else
 650         exec 4>/dev/null 3>/dev/null
 651 fi
 652
 653 # Send any "-x" output directly to stderr to avoid polluting tests
 654 # which capture stderr. We can do this unconditionally since it
 655 # has no effect if tracing isn't turned on.
 656 #
 657 # Note that this sets up the trace fd as soon as we assign the variable, so it
 658 # must come after the creation of descriptor 4 above. Likewise, we must never
 659 # unset this, as it has the side effect of closing descriptor 4, which we
 660 # use to show verbose tests to the user.
 661 #
 662 # Note also that we don't need or want to export it. The tracing is local to
 663 # this shell, and we would not want to influence any shells we exec.
 664 BASH_XTRACEFD=4
 665
 666 test_failure=0
 667 test_count=0
 668 test_fixed=0
 669 test_broken=0
 670 test_success=0
 671
 672 test_external_has_tap=0
 673
 674 die () {
 675         code=$?
 676         # This is responsible for running the atexit commands even when a
 677         # test script run with '--immediate' fails, or when the user hits
 678         # ctrl-C, i.e. when 'test_done' is not invoked at all.
 679         test_atexit_handler || code=$?
 680         if test -n "$GIT_EXIT_OK"
 681         then
 682                 exit $code
 683         else
 684                 echo >&5 "FATAL: Unexpected exit with code $code"
 685                 exit 1
 686         fi
 687 }
 688
 689 GIT_EXIT_OK=
 690 trap 'die' EXIT
 691 # Disable '-x' tracing, because with some shells, notably dash, it
 692 # prevents running the cleanup commands when a test script run with
 693 # '--verbose-log -x' is interrupted.
 694 trap '{ code=$?; set +x; } 2>/dev/null; exit $code' INT TERM HUP
 695
 696 # The user-facing functions are loaded from a separate file so that
 697 # test_perf subshells can have them too
 698 . "$TEST_DIRECTORY/test-lib-functions.sh"
 699
 700 # You are not expected to call test_ok_ and test_failure_ directly, use
 701 # the test_expect_* functions instead.
 702
 703 test_ok_ () {
 704         if test -n "$write_junit_xml"
 705         then
 706                 write_junit_xml_testcase "$*"
 707         fi
 708         test_success=$(($test_success + 1))
 709         say_color "" "ok $test_count - $@"
 710 }
 711
 712 test_failure_ () {
 713         if test -n "$write_junit_xml"
 714         then
 715                 junit_insert="<failure message=\"not ok $test_count -"
 716                 junit_insert="$junit_insert $(xml_attr_encode "$1")\">"
 717                 junit_insert="$junit_insert $(xml_attr_encode \
 718                         "$(if test -n "$GIT_TEST_TEE_OUTPUT_FILE"
 719                            then
 720                                 test-tool path-utils skip-n-bytes \
 721                                         "$GIT_TEST_TEE_OUTPUT_FILE" $GIT_TEST_TEE_OFFSET
 722                            else
 723                                 printf '%s\n' "$@" | sed 1d
 724                            fi)")"
 725                 junit_insert="$junit_insert</failure>"
 726                 if test -n "$GIT_TEST_TEE_OUTPUT_FILE"
 727                 then
 728                         junit_insert="$junit_insert<system-err>$(xml_attr_encode \
 729                                 "$(cat "$GIT_TEST_TEE_OUTPUT_FILE")")</system-err>"
 730                 fi
 731                 write_junit_xml_testcase "$1" "      $junit_insert"
 732         fi
 733         test_failure=$(($test_failure + 1))
 734         say_color error "not ok $test_count - $1"
 735         shift
 736         printf '%s\n' "$*" | sed -e 's/^/#      /'
 737         test "$immediate" = "" || _error_exit
 738 }
 739
 740 test_known_broken_ok_ () {
 741         if test -n "$write_junit_xml"
 742         then
 743                 write_junit_xml_testcase "$* (breakage fixed)"
 744         fi
 745         test_fixed=$(($test_fixed+1))
 746         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 747 }
 748
 749 test_known_broken_failure_ () {
 750         if test -n "$write_junit_xml"
 751         then
 752                 write_junit_xml_testcase "$* (known breakage)"
 753         fi
 754         test_broken=$(($test_broken+1))
 755         say_color warn "not ok $test_count - $@ # TODO known breakage"
 756 }
 757
 758 test_debug () {
 759         test "$debug" = "" || eval "$1"
 760 }
 761
 762 match_pattern_list () {
 763         arg="$1"
 764         shift
 765         test -z "$*" && return 1
 766         # We need to use "$*" to get field-splitting, but we want to
 767         # disable globbing, since we are matching against an arbitrary
 768         # $arg, not what's in the filesystem. Using "set -f" accomplishes
 769         # that, but we must do it in a subshell to avoid impacting the
 770         # rest of the script. The exit value of the subshell becomes
 771         # the function's return value.
 772         (
 773                 set -f
 774                 for pattern_ in $*
 775                 do
 776                         case "$arg" in
 777                         $pattern_)
 778                                 exit 0
 779                                 ;;
 780                         esac
 781                 done
 782                 exit 1
 783         )
 784 }
 785
 786 match_test_selector_list () {
 787         operation="$1"
 788         shift
 789         title="$1"
 790         shift
 791         arg="$1"
 792         shift
 793         test -z "$1" && return 0
 794
 795         # Commas are accepted as separators.
 796         OLDIFS=$IFS
 797         IFS=','
 798         set -- $1
 799         IFS=$OLDIFS
 800
 801         # If the first selector is negative we include by default.
 802         include=
 803         case "$1" in
 804                 !*) include=t ;;
 805         esac
 806
 807         for selector
 808         do
 809                 orig_selector=$selector
 810
 811                 positive=t
 812                 case "$selector" in
 813                         !*)
 814                                 positive=
 815                                 selector=${selector##?}
 816                                 ;;
 817                 esac
 818
 819                 test -z "$selector" && continue
 820
 821                 case "$selector" in
 822                         *-*)
 823                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 824                                 then
 825                                         echo "error: $operation: invalid non-numeric in range" \
 826                                                 "start: '$orig_selector'" >&2
 827                                         exit 1
 828                                 fi
 829                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 830                                 then
 831                                         echo "error: $operation: invalid non-numeric in range" \
 832                                                 "end: '$orig_selector'" >&2
 833                                         exit 1
 834                                 fi
 835                                 ;;
 836                         *)
 837                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 838                                 then
 839                                         case "$title" in *${selector}*)
 840                                                 include=$positive
 841                                                 ;;
 842                                         esac
 843                                         continue
 844                                 fi
 845                 esac
 846
 847                 # Short cut for "obvious" cases
 848                 test -z "$include" && test -z "$positive" && continue
 849                 test -n "$include" && test -n "$positive" && continue
 850
 851                 case "$selector" in
 852                         -*)
 853                                 if test $arg -le ${selector#-}
 854                                 then
 855                                         include=$positive
 856                                 fi
 857                                 ;;
 858                         *-)
 859                                 if test $arg -ge ${selector%-}
 860                                 then
 861                                         include=$positive
 862                                 fi
 863                                 ;;
 864                         *-*)
 865                                 if test ${selector%%-*} -le $arg \
 866                                         && test $arg -le ${selector#*-}
 867                                 then
 868                                         include=$positive
 869                                 fi
 870                                 ;;
 871                         *)
 872                                 if test $arg -eq $selector
 873                                 then
 874                                         include=$positive
 875                                 fi
 876                                 ;;
 877                 esac
 878         done
 879
 880         test -n "$include"
 881 }
 882
 883 maybe_teardown_verbose () {
 884         test -z "$verbose_only" && return
 885         exec 4>/dev/null 3>/dev/null
 886         verbose=
 887 }
 888
 889 last_verbose=t
 890 maybe_setup_verbose () {
 891         test -z "$verbose_only" && return
 892         if match_pattern_list $test_count "$verbose_only"
 893         then
 894                 exec 4>&2 3>&1
 895                 # Emit a delimiting blank line when going from
 896                 # non-verbose to verbose.  Within verbose mode the
 897                 # delimiter is printed by test_expect_*.  The choice
 898                 # of the initial $last_verbose is such that before
 899                 # test 1, we do not print it.
 900                 test -z "$last_verbose" && echo >&3 ""
 901                 verbose=t
 902         else
 903                 exec 4>/dev/null 3>/dev/null
 904                 verbose=
 905         fi
 906         last_verbose=$verbose
 907 }
 908
 909 maybe_teardown_valgrind () {
 910         test -z "$GIT_VALGRIND" && return
 911         GIT_VALGRIND_ENABLED=
 912 }
 913
 914 maybe_setup_valgrind () {
 915         test -z "$GIT_VALGRIND" && return
 916         if test -z "$valgrind_only"
 917         then
 918                 GIT_VALGRIND_ENABLED=t
 919                 return
 920         fi
 921         GIT_VALGRIND_ENABLED=
 922         if match_pattern_list $test_count "$valgrind_only"
 923         then
 924                 GIT_VALGRIND_ENABLED=t
 925         fi
 926 }
 927
 928 trace_level_=0
 929 want_trace () {
 930         test "$trace" = t && {
 931                 test "$verbose" = t || test "$verbose_log" = t
 932         }
 933 }
 934
 935 # This is a separate function because some tests use
 936 # "return" to end a test_expect_success block early
 937 # (and we want to make sure we run any cleanup like
 938 # "set +x").
 939 test_eval_inner_ () {
 940         # Do not add anything extra (including LF) after '$*'
 941         eval "
 942                 want_trace && trace_level_=$(($trace_level_+1)) && set -x
 943                 $*"
 944 }
 945
 946 test_eval_ () {
 947         # If "-x" tracing is in effect, then we want to avoid polluting stderr
 948         # with non-test commands. But once in "set -x" mode, we cannot prevent
 949         # the shell from printing the "set +x" to turn it off (nor the saving
 950         # of $? before that). But we can make sure that the output goes to
 951         # /dev/null.
 952         #
 953         # There are a few subtleties here:
 954         #
 955         #   - we have to redirect descriptor 4 in addition to 2, to cover
 956         #     BASH_XTRACEFD
 957         #
 958         #   - the actual eval has to come before the redirection block (since
 959         #     it needs to see descriptor 4 to set up its stderr)
 960         #
 961         #   - likewise, any error message we print must be outside the block to
 962         #     access descriptor 4
 963         #
 964         #   - checking $? has to come immediately after the eval, but it must
 965         #     be _inside_ the block to avoid polluting the "set -x" output
 966         #
 967
 968         test_eval_inner_ "$@" </dev/null >&3 2>&4
 969         {
 970                 test_eval_ret_=$?
 971                 if want_trace
 972                 then
 973                         test 1 = $trace_level_ && set +x
 974                         trace_level_=$(($trace_level_-1))
 975                 fi
 976         } 2>/dev/null 4>&2
 977
 978         if test "$test_eval_ret_" != 0 && want_trace
 979         then
 980                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 981         fi
 982         return $test_eval_ret_
 983 }
 984
 985 test_run_ () {
 986         test_cleanup=:
 987         expecting_failure=$2
 988
 989         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 990                 # turn off tracing for this test-eval, as it simply creates
 991                 # confusing noise in the "-x" output
 992                 trace_tmp=$trace
 993                 trace=
 994                 # 117 is magic because it is unlikely to match the exit
 995                 # code of other programs
 996                 if test "OK-117" != "$(test_eval_ "(exit 117) && $1${LF}${LF}echo OK-\$?" 3>&1)" ||
 997                    {
 998                         test "${GIT_TEST_CHAIN_LINT_HARDER:-${GIT_TEST_CHAIN_LINT_HARDER_DEFAULT:-1}}" != 0 &&
 999                         $(printf '%s\n' "$1" | sed -f "$GIT_BUILD_DIR/t/chainlint.sed" | grep -q '?![A-Z][A-Z]*?!')
1000                    }
1001                 then
1002                         BUG "broken &&-chain or run-away HERE-DOC: $1"
1003                 fi
1004                 trace=$trace_tmp
1005         fi
1006
1007         setup_malloc_check
1008         test_eval_ "$1"
1009         eval_ret=$?
1010         teardown_malloc_check
1011
1012         if test -z "$immediate" || test $eval_ret = 0 ||
1013            test -n "$expecting_failure" && test "$test_cleanup" != ":"
1014         then
1015                 setup_malloc_check
1016                 test_eval_ "$test_cleanup"
1017                 teardown_malloc_check
1018         fi
1019         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
1020         then
1021                 echo ""
1022         fi
1023         return "$eval_ret"
1024 }
1025
1026 test_start_ () {
1027         test_count=$(($test_count+1))
1028         maybe_setup_verbose
1029         maybe_setup_valgrind
1030         if test -n "$write_junit_xml"
1031         then
1032                 junit_start=$(test-tool date getnanos)
1033         fi
1034 }
1035
1036 test_finish_ () {
1037         echo >&3 ""
1038         maybe_teardown_valgrind
1039         maybe_teardown_verbose
1040         if test -n "$GIT_TEST_TEE_OFFSET"
1041         then
1042                 GIT_TEST_TEE_OFFSET=$(test-tool path-utils file-size \
1043                         "$GIT_TEST_TEE_OUTPUT_FILE")
1044         fi
1045 }
1046
1047 test_skip () {
1048         to_skip=
1049         skipped_reason=
1050         if match_pattern_list $this_test.$test_count "$GIT_SKIP_TESTS"
1051         then
1052                 to_skip=t
1053                 skipped_reason="GIT_SKIP_TESTS"
1054         fi
1055         if test -z "$to_skip" && test -n "$run_list" &&
1056            ! match_test_selector_list '--run' "$1" $test_count "$run_list"
1057         then
1058                 to_skip=t
1059                 skipped_reason="--run"
1060         fi
1061         if test -z "$to_skip" && test -n "$test_prereq" &&
1062            ! test_have_prereq "$test_prereq"
1063         then
1064                 to_skip=t
1065
1066                 of_prereq=
1067                 if test "$missing_prereq" != "$test_prereq"
1068                 then
1069                         of_prereq=" of $test_prereq"
1070                 fi
1071                 skipped_reason="missing $missing_prereq${of_prereq}"
1072         fi
1073
1074         case "$to_skip" in
1075         t)
1076                 if test -n "$write_junit_xml"
1077                 then
1078                         message="$(xml_attr_encode "$skipped_reason")"
1079                         write_junit_xml_testcase "$1" \
1080                                 "      <skipped message=\"$message\" />"
1081                 fi
1082
1083                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
1084                 : true
1085                 ;;
1086         *)
1087                 false
1088                 ;;
1089         esac
1090 }
1091
1092 # stub; perf-lib overrides it
1093 test_at_end_hook_ () {
1094         :
1095 }
1096
1097 write_junit_xml () {
1098         case "$1" in
1099         --truncate)
1100                 >"$junit_xml_path"
1101                 junit_have_testcase=
1102                 shift
1103                 ;;
1104         esac
1105         printf '%s\n' "$@" >>"$junit_xml_path"
1106 }
1107
1108 xml_attr_encode () {
1109         printf '%s\n' "$@" | test-tool xml-encode
1110 }
1111
1112 write_junit_xml_testcase () {
1113         junit_attrs="name=\"$(xml_attr_encode "$this_test.$test_count $1")\""
1114         shift
1115         junit_attrs="$junit_attrs classname=\"$this_test\""
1116         junit_attrs="$junit_attrs time=\"$(test-tool \
1117                 date getnanos $junit_start)\""
1118         write_junit_xml "$(printf '%s\n' \
1119                 "    <testcase $junit_attrs>" "$@" "    </testcase>")"
1120         junit_have_testcase=t
1121 }
1122
1123 finalize_junit_xml () {
1124         if test -n "$write_junit_xml" && test -n "$junit_xml_path"
1125         then
1126                 test -n "$junit_have_testcase" || {
1127                         junit_start=$(test-tool date getnanos)
1128                         write_junit_xml_testcase "all tests skipped"
1129                 }
1130
1131                 # adjust the overall time
1132                 junit_time=$(test-tool date getnanos $junit_suite_start)
1133                 sed -e "s/\(<testsuite.*\) time=\"[^\"]*\"/\1/" \
1134                         -e "s/<testsuite [^>]*/& time=\"$junit_time\"/" \
1135                         -e '/^ *<\/testsuite/d' \
1136                         <"$junit_xml_path" >"$junit_xml_path.new"
1137                 mv "$junit_xml_path.new" "$junit_xml_path"
1138
1139                 write_junit_xml "  </testsuite>" "</testsuites>"
1140                 write_junit_xml=
1141         fi
1142 }
1143
1144 test_atexit_cleanup=:
1145 test_atexit_handler () {
1146         # In a succeeding test script 'test_atexit_handler' is invoked
1147         # twice: first from 'test_done', then from 'die' in the trap on
1148         # EXIT.
1149         # This condition and resetting 'test_atexit_cleanup' below makes
1150         # sure that the registered cleanup commands are run only once.
1151         test : != "$test_atexit_cleanup" || return 0
1152
1153         setup_malloc_check
1154         test_eval_ "$test_atexit_cleanup"
1155         test_atexit_cleanup=:
1156         teardown_malloc_check
1157 }
1158
1159 test_done () {
1160         GIT_EXIT_OK=t
1161
1162         # Run the atexit commands _before_ the trash directory is
1163         # removed, so the commands can access pidfiles and socket files.
1164         test_atexit_handler
1165
1166         finalize_junit_xml
1167
1168         if test -z "$HARNESS_ACTIVE"
1169         then
1170                 mkdir -p "$TEST_RESULTS_DIR"
1171
1172                 cat >"$TEST_RESULTS_BASE.counts" <<-EOF
1173                 total $test_count
1174                 success $test_success
1175                 fixed $test_fixed
1176                 broken $test_broken
1177                 failed $test_failure
1178
1179                 EOF
1180         fi
1181
1182         if test "$test_fixed" != 0
1183         then
1184                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
1185         fi
1186         if test "$test_broken" != 0
1187         then
1188                 say_color warn "# still have $test_broken known breakage(s)"
1189         fi
1190         if test "$test_broken" != 0 || test "$test_fixed" != 0
1191         then
1192                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
1193                 msg="remaining $test_remaining test(s)"
1194         else
1195                 test_remaining=$test_count
1196                 msg="$test_count test(s)"
1197         fi
1198         case "$test_failure" in
1199         0)
1200                 if test $test_external_has_tap -eq 0
1201                 then
1202                         if test $test_remaining -gt 0
1203                         then
1204                                 say_color pass "# passed all $msg"
1205                         fi
1206
1207                         # Maybe print SKIP message
1208                         test -z "$skip_all" || skip_all="# SKIP $skip_all"
1209                         case "$test_count" in
1210                         0)
1211                                 say "1..$test_count${skip_all:+ $skip_all}"
1212                                 ;;
1213                         *)
1214                                 test -z "$skip_all" ||
1215                                 say_color warn "$skip_all"
1216                                 say "1..$test_count"
1217                                 ;;
1218                         esac
1219                 fi
1220
1221                 if test -z "$debug" && test -n "$remove_trash"
1222                 then
1223                         test -d "$TRASH_DIRECTORY" ||
1224                         error "Tests passed but trash directory already removed before test cleanup; aborting"
1225
1226                         cd "$TRASH_DIRECTORY/.." &&
1227                         rm -fr "$TRASH_DIRECTORY" || {
1228                                 # try again in a bit
1229                                 sleep 5;
1230                                 rm -fr "$TRASH_DIRECTORY"
1231                         } ||
1232                         error "Tests passed but test cleanup failed; aborting"
1233                 fi
1234                 test_at_end_hook_
1235
1236                 exit 0 ;;
1237
1238         *)
1239                 if test $test_external_has_tap -eq 0
1240                 then
1241                         say_color error "# failed $test_failure among $msg"
1242                         say "1..$test_count"
1243                 fi
1244
1245                 exit 1 ;;
1246
1247         esac
1248 }
1249
1250 if test -n "$valgrind"
1251 then
1252         make_symlink () {
1253                 test -h "$2" &&
1254                 test "$1" = "$(readlink "$2")" || {
1255                         # be super paranoid
1256                         if mkdir "$2".lock
1257                         then
1258                                 rm -f "$2" &&
1259                                 ln -s "$1" "$2" &&
1260                                 rm -r "$2".lock
1261                         else
1262                                 while test -d "$2".lock
1263                                 do
1264                                         say "Waiting for lock on $2."
1265                                         sleep 1
1266                                 done
1267                         fi
1268                 }
1269         }
1270
1271         make_valgrind_symlink () {
1272                 # handle only executables, unless they are shell libraries that
1273                 # need to be in the exec-path.
1274                 test -x "$1" ||
1275                 test "# " = "$(test_copy_bytes 2 <"$1")" ||
1276                 return;
1277
1278                 base=$(basename "$1")
1279                 case "$base" in
1280                 test-*)
1281                         symlink_target="$GIT_BUILD_DIR/t/helper/$base"
1282                         ;;
1283                 *)
1284                         symlink_target="$GIT_BUILD_DIR/$base"
1285                         ;;
1286                 esac
1287                 # do not override scripts
1288                 if test -x "$symlink_target" &&
1289                     test ! -d "$symlink_target" &&
1290                     test "#!" != "$(test_copy_bytes 2 <"$symlink_target")"
1291                 then
1292                         symlink_target=../valgrind.sh
1293                 fi
1294                 case "$base" in
1295                 *.sh|*.perl)
1296                         symlink_target=../unprocessed-script
1297                 esac
1298                 # create the link, or replace it if it is out of date
1299                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
1300         }
1301
1302         # override all git executables in TEST_DIRECTORY/..
1303         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
1304         mkdir -p "$GIT_VALGRIND"/bin
1305         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
1306         do
1307                 make_valgrind_symlink $file
1308         done
1309         # special-case the mergetools loadables
1310         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
1311         OLDIFS=$IFS
1312         IFS=:
1313         for path in $PATH
1314         do
1315                 ls "$path"/git-* 2> /dev/null |
1316                 while read file
1317                 do
1318                         make_valgrind_symlink "$file"
1319                 done
1320         done
1321         IFS=$OLDIFS
1322         PATH=$GIT_VALGRIND/bin:$PATH
1323         GIT_EXEC_PATH=$GIT_VALGRIND/bin
1324         export GIT_VALGRIND
1325         GIT_VALGRIND_MODE="$valgrind"
1326         export GIT_VALGRIND_MODE
1327         GIT_VALGRIND_ENABLED=t
1328         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
1329         export GIT_VALGRIND_ENABLED
1330 elif test -n "$GIT_TEST_INSTALLED"
1331 then
1332         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
1333         error "Cannot run git from $GIT_TEST_INSTALLED."
1334         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR/t/helper:$PATH
1335         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
1336 else # normal case, use ../bin-wrappers only unless $with_dashes:
1337         if test -n "$no_bin_wrappers"
1338         then
1339                 with_dashes=t
1340         else
1341                 git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
1342                 if ! test -x "$git_bin_dir/git"
1343                 then
1344                         if test -z "$with_dashes"
1345                         then
1346                                 say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
1347                         fi
1348                         with_dashes=t
1349                 fi
1350                 PATH="$git_bin_dir:$PATH"
1351         fi
1352         GIT_EXEC_PATH=$GIT_BUILD_DIR
1353         if test -n "$with_dashes"
1354         then
1355                 PATH="$GIT_BUILD_DIR:$GIT_BUILD_DIR/t/helper:$PATH"
1356         fi
1357 fi
1358 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
1359 GIT_CONFIG_NOSYSTEM=1
1360 GIT_ATTR_NOSYSTEM=1
1361 GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.."
1362 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM GIT_CEILING_DIRECTORIES
1363
1364 if test -z "$GIT_TEST_CMP"
1365 then
1366         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
1367         then
1368                 GIT_TEST_CMP="$DIFF -c"
1369         else
1370                 GIT_TEST_CMP="$DIFF -u"
1371         fi
1372 fi
1373
1374 GITPERLLIB="$GIT_BUILD_DIR"/perl/build/lib
1375 export GITPERLLIB
1376 test -d "$GIT_BUILD_DIR"/templates/blt || {
1377         error "You haven't built things yet, have you?"
1378 }
1379
1380 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-tool$X
1381 then
1382         echo >&2 'You need to build test-tool:'
1383         echo >&2 'Run "make t/helper/test-tool" in the source (toplevel) directory'
1384         exit 1
1385 fi
1386
1387 # Are we running this test at all?
1388 remove_trash=
1389 this_test=${0##*/}
1390 this_test=${this_test%%-*}
1391 if match_pattern_list "$this_test" "$GIT_SKIP_TESTS"
1392 then
1393         say_color info >&3 "skipping test $this_test altogether"
1394         skip_all="skip all tests in $this_test"
1395         test_done
1396 fi
1397
1398 # skip non-whitelisted tests when compiled with SANITIZE=leak
1399 if test -n "$SANITIZE_LEAK"
1400 then
1401         if test_bool_env GIT_TEST_PASSING_SANITIZE_LEAK false
1402         then
1403                 # We need to see it in "git env--helper" (via
1404                 # test_bool_env)
1405                 export TEST_PASSES_SANITIZE_LEAK
1406
1407                 if ! test_bool_env TEST_PASSES_SANITIZE_LEAK false
1408                 then
1409                         skip_all="skipping $this_test under GIT_TEST_PASSING_SANITIZE_LEAK=true"
1410                         test_done
1411                 fi
1412         fi
1413 elif test_bool_env GIT_TEST_PASSING_SANITIZE_LEAK false
1414 then
1415         BAIL_OUT "GIT_TEST_PASSING_SANITIZE_LEAK=true has no effect except when compiled with SANITIZE=leak"
1416 fi
1417
1418 # Last-minute variable setup
1419 USER_HOME="$HOME"
1420 HOME="$TRASH_DIRECTORY"
1421 GNUPGHOME="$HOME/gnupg-home-not-used"
1422 export HOME GNUPGHOME USER_HOME
1423
1424 # "rm -rf" existing trash directory, even if a previous run left it
1425 # with bad permissions.
1426 remove_trash_directory () {
1427         dir="$1"
1428         if ! rm -rf "$dir" 2>/dev/null
1429         then
1430                 chmod -R u+rwx "$dir"
1431                 rm -rf "$dir"
1432         fi
1433         ! test -d "$dir"
1434 }
1435
1436 # Test repository
1437 remove_trash_directory "$TRASH_DIRECTORY" || {
1438         GIT_EXIT_OK=t
1439         echo >&5 "FATAL: Cannot prepare test area"
1440         exit 1
1441 }
1442
1443 remove_trash=t
1444 if test -z "$TEST_NO_CREATE_REPO"
1445 then
1446         git init "$TRASH_DIRECTORY" >&3 2>&4 ||
1447         error "cannot run git init"
1448 else
1449         mkdir -p "$TRASH_DIRECTORY"
1450 fi
1451
1452 # Use -P to resolve symlinks in our working directory so that the cwd
1453 # in subprocesses like git equals our $PWD (for pathname comparisons).
1454 cd -P "$TRASH_DIRECTORY" || exit 1
1455
1456 if test -n "$write_junit_xml"
1457 then
1458         junit_xml_dir="$TEST_OUTPUT_DIRECTORY/out"
1459         mkdir -p "$junit_xml_dir"
1460         junit_xml_base=${0##*/}
1461         junit_xml_path="$junit_xml_dir/TEST-${junit_xml_base%.sh}.xml"
1462         junit_attrs="name=\"${junit_xml_base%.sh}\""
1463         junit_attrs="$junit_attrs timestamp=\"$(TZ=UTC \
1464                 date +%Y-%m-%dT%H:%M:%S)\""
1465         write_junit_xml --truncate "<testsuites>" "  <testsuite $junit_attrs>"
1466         junit_suite_start=$(test-tool date getnanos)
1467         if test -n "$GIT_TEST_TEE_OUTPUT_FILE"
1468         then
1469                 GIT_TEST_TEE_OFFSET=0
1470         fi
1471 fi
1472
1473 # Convenience
1474 # A regexp to match 5 and 35 hexdigits
1475 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
1476 _x35="$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
1477
1478 test_oid_init
1479
1480 ZERO_OID=$(test_oid zero)
1481 OID_REGEX=$(echo $ZERO_OID | sed -e 's/0/[0-9a-f]/g')
1482 OIDPATH_REGEX=$(test_oid_to_path $ZERO_OID | sed -e 's/0/[0-9a-f]/g')
1483 EMPTY_TREE=$(test_oid empty_tree)
1484 EMPTY_BLOB=$(test_oid empty_blob)
1485
1486 # Provide an implementation of the 'yes' utility; the upper bound
1487 # limit is there to help Windows that cannot stop this loop from
1488 # wasting cycles when the downstream stops reading, so do not be
1489 # tempted to turn it into an infinite loop. cf. 6129c930 ("test-lib:
1490 # limit the output of the yes utility", 2016-02-02)
1491 yes () {
1492         if test $# = 0
1493         then
1494                 y=y
1495         else
1496                 y="$*"
1497         fi
1498
1499         i=0
1500         while test $i -lt 99
1501         do
1502                 echo "$y"
1503                 i=$(($i+1))
1504         done
1505 }
1506
1507 # The GIT_TEST_FAIL_PREREQS code hooks into test_set_prereq(), and
1508 # thus needs to be set up really early, and set an internal variable
1509 # for convenience so the hot test_set_prereq() codepath doesn't need
1510 # to call "git env--helper" (via test_bool_env). Only do that work
1511 # if needed by seeing if GIT_TEST_FAIL_PREREQS is set at all.
1512 GIT_TEST_FAIL_PREREQS_INTERNAL=
1513 if test -n "$GIT_TEST_FAIL_PREREQS"
1514 then
1515         if test_bool_env GIT_TEST_FAIL_PREREQS false
1516         then
1517                 GIT_TEST_FAIL_PREREQS_INTERNAL=true
1518                 test_set_prereq FAIL_PREREQS
1519         fi
1520 else
1521         test_lazy_prereq FAIL_PREREQS '
1522                 test_bool_env GIT_TEST_FAIL_PREREQS false
1523         '
1524 fi
1525
1526 # Fix some commands on Windows, and other OS-specific things
1527 uname_s=$(uname -s)
1528 case $uname_s in
1529 *MINGW*)
1530         # Windows has its own (incompatible) sort and find
1531         sort () {
1532                 /usr/bin/sort "$@"
1533         }
1534         find () {
1535                 /usr/bin/find "$@"
1536         }
1537         # git sees Windows-style pwd
1538         pwd () {
1539                 builtin pwd -W
1540         }
1541         # no POSIX permissions
1542         # backslashes in pathspec are converted to '/'
1543         # exec does not inherit the PID
1544         test_set_prereq MINGW
1545         test_set_prereq NATIVE_CRLF
1546         test_set_prereq SED_STRIPS_CR
1547         test_set_prereq GREP_STRIPS_CR
1548         test_set_prereq WINDOWS
1549         GIT_TEST_CMP=mingw_test_cmp
1550         ;;
1551 *CYGWIN*)
1552         test_set_prereq POSIXPERM
1553         test_set_prereq EXECKEEPSPID
1554         test_set_prereq CYGWIN
1555         test_set_prereq SED_STRIPS_CR
1556         test_set_prereq GREP_STRIPS_CR
1557         test_set_prereq WINDOWS
1558         ;;
1559 *)
1560         test_set_prereq POSIXPERM
1561         test_set_prereq BSLASHPSPEC
1562         test_set_prereq EXECKEEPSPID
1563         ;;
1564 esac
1565
1566 # Detect arches where a few things don't work
1567 uname_m=$(uname -m)
1568 case $uname_m in
1569 parisc* | hppa*)
1570         test_set_prereq HPPA
1571         ;;
1572 esac
1573
1574 test_set_prereq REFFILES
1575
1576 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1577 test -z "$NO_PERL" && test_set_prereq PERL
1578 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
1579 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1580 test -n "$USE_LIBPCRE2" && test_set_prereq PCRE
1581 test -n "$USE_LIBPCRE2" && test_set_prereq LIBPCRE2
1582 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1583 test -n "$SANITIZE_LEAK" && test_set_prereq SANITIZE_LEAK
1584
1585 if test -z "$GIT_TEST_CHECK_CACHE_TREE"
1586 then
1587         GIT_TEST_CHECK_CACHE_TREE=true
1588         export GIT_TEST_CHECK_CACHE_TREE
1589 fi
1590
1591 test_lazy_prereq PIPE '
1592         # test whether the filesystem supports FIFOs
1593         test_have_prereq !MINGW,!CYGWIN &&
1594         rm -f testfifo && mkfifo testfifo
1595 '
1596
1597 test_lazy_prereq SYMLINKS '
1598         # test whether the filesystem supports symbolic links
1599         ln -s x y && test -h y
1600 '
1601
1602 test_lazy_prereq SYMLINKS_WINDOWS '
1603         # test whether symbolic links are enabled on Windows
1604         test_have_prereq MINGW &&
1605         cmd //c "mklink y x" &> /dev/null && test -h y
1606 '
1607
1608 test_lazy_prereq FILEMODE '
1609         test "$(git config --bool core.filemode)" = true
1610 '
1611
1612 test_lazy_prereq CASE_INSENSITIVE_FS '
1613         echo good >CamelCase &&
1614         echo bad >camelcase &&
1615         test "$(cat CamelCase)" != good
1616 '
1617
1618 test_lazy_prereq FUNNYNAMES '
1619         test_have_prereq !MINGW &&
1620         touch -- \
1621                 "FUNNYNAMES tab embedded" \
1622                 "FUNNYNAMES \"quote embedded\"" \
1623                 "FUNNYNAMES newline
1624 embedded" 2>/dev/null &&
1625         rm -- \
1626                 "FUNNYNAMES tab embedded" \
1627                 "FUNNYNAMES \"quote embedded\"" \
1628                 "FUNNYNAMES newline
1629 embedded" 2>/dev/null
1630 '
1631
1632 test_lazy_prereq UTF8_NFD_TO_NFC '
1633         # check whether FS converts nfd unicode to nfc
1634         auml=$(printf "\303\244")
1635         aumlcdiar=$(printf "\141\314\210")
1636         >"$auml" &&
1637         test -f "$aumlcdiar"
1638 '
1639
1640 test_lazy_prereq AUTOIDENT '
1641         sane_unset GIT_AUTHOR_NAME &&
1642         sane_unset GIT_AUTHOR_EMAIL &&
1643         git var GIT_AUTHOR_IDENT
1644 '
1645
1646 test_lazy_prereq EXPENSIVE '
1647         test -n "$GIT_TEST_LONG"
1648 '
1649
1650 test_lazy_prereq EXPENSIVE_ON_WINDOWS '
1651         test_have_prereq EXPENSIVE || test_have_prereq !MINGW,!CYGWIN
1652 '
1653
1654 test_lazy_prereq USR_BIN_TIME '
1655         test -x /usr/bin/time
1656 '
1657
1658 test_lazy_prereq NOT_ROOT '
1659         uid=$(id -u) &&
1660         test "$uid" != 0
1661 '
1662
1663 test_lazy_prereq JGIT '
1664         jgit --version
1665 '
1666
1667 # SANITY is about "can you correctly predict what the filesystem would
1668 # do by only looking at the permission bits of the files and
1669 # directories?"  A typical example of !SANITY is running the test
1670 # suite as root, where a test may expect "chmod -r file && cat file"
1671 # to fail because file is supposed to be unreadable after a successful
1672 # chmod.  In an environment (i.e. combination of what filesystem is
1673 # being used and who is running the tests) that lacks SANITY, you may
1674 # be able to delete or create a file when the containing directory
1675 # doesn't have write permissions, or access a file even if the
1676 # containing directory doesn't have read or execute permissions.
1677
1678 test_lazy_prereq SANITY '
1679         mkdir SANETESTD.1 SANETESTD.2 &&
1680
1681         chmod +w SANETESTD.1 SANETESTD.2 &&
1682         >SANETESTD.1/x 2>SANETESTD.2/x &&
1683         chmod -w SANETESTD.1 &&
1684         chmod -r SANETESTD.1/x &&
1685         chmod -rx SANETESTD.2 ||
1686         BUG "cannot prepare SANETESTD"
1687
1688         ! test -r SANETESTD.1/x &&
1689         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1690         status=$?
1691
1692         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1693         rm -rf SANETESTD.1 SANETESTD.2 ||
1694         BUG "cannot clean SANETESTD"
1695         return $status
1696 '
1697
1698 test FreeBSD != $uname_s || GIT_UNZIP=${GIT_UNZIP:-/usr/local/bin/unzip}
1699 GIT_UNZIP=${GIT_UNZIP:-unzip}
1700 test_lazy_prereq UNZIP '
1701         "$GIT_UNZIP" -v
1702         test $? -ne 127
1703 '
1704
1705 run_with_limited_cmdline () {
1706         (ulimit -s 128 && "$@")
1707 }
1708
1709 test_lazy_prereq CMDLINE_LIMIT '
1710         test_have_prereq !HPPA,!MINGW,!CYGWIN &&
1711         run_with_limited_cmdline true
1712 '
1713
1714 run_with_limited_stack () {
1715         (ulimit -s 128 && "$@")
1716 }
1717
1718 test_lazy_prereq ULIMIT_STACK_SIZE '
1719         test_have_prereq !HPPA,!MINGW,!CYGWIN &&
1720         run_with_limited_stack true
1721 '
1722
1723 run_with_limited_open_files () {
1724         (ulimit -n 32 && "$@")
1725 }
1726
1727 test_lazy_prereq ULIMIT_FILE_DESCRIPTORS '
1728         test_have_prereq !MINGW,!CYGWIN &&
1729         run_with_limited_open_files true
1730 '
1731
1732 build_option () {
1733         git version --build-options |
1734         sed -ne "s/^$1: //p"
1735 }
1736
1737 test_lazy_prereq SIZE_T_IS_64BIT '
1738         test 8 -eq "$(build_option sizeof-size_t)"
1739 '
1740
1741 test_lazy_prereq LONG_IS_64BIT '
1742         test 8 -le "$(build_option sizeof-long)"
1743 '
1744
1745 test_lazy_prereq TIME_IS_64BIT 'test-tool date is64bit'
1746 test_lazy_prereq TIME_T_IS_64BIT 'test-tool date time_t-is64bit'
1747
1748 test_lazy_prereq CURL '
1749         curl --version
1750 '
1751
1752 # SHA1 is a test if the hash algorithm in use is SHA-1.  This is both for tests
1753 # which will not work with other hash algorithms and tests that work but don't
1754 # test anything meaningful (e.g. special values which cause short collisions).
1755 test_lazy_prereq SHA1 '
1756         case "$GIT_DEFAULT_HASH" in
1757         sha1) true ;;
1758         "") test $(git hash-object /dev/null) = e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 ;;
1759         *) false ;;
1760         esac
1761 '
1762
1763 # Ensure that no test accidentally triggers a Git command
1764 # that runs the actual maintenance scheduler, affecting a user's
1765 # system permanently.
1766 # Tests that verify the scheduler integration must set this locally
1767 # to avoid errors.
1768 GIT_TEST_MAINT_SCHEDULER="none:exit 1"