t/test-lib.sh

   1 # Test framework for git.  See t/README for usage.
   2 #
   3 # Copyright (c) 2005 Junio C Hamano
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see http://www.gnu.org/licenses/ .
  17
  18 # Test the binaries we have just built.  The tests are kept in
  19 # t/ subdirectory and are run in 'trash directory' subdirectory.
  20 if test -z "$TEST_DIRECTORY"
  21 then
  22         # We allow tests to override this, in case they want to run tests
  23         # outside of t/, e.g. for running tests on the test library
  24         # itself.
  25         TEST_DIRECTORY=$(pwd)
  26 else
  27         # ensure that TEST_DIRECTORY is an absolute path so that it
  28         # is valid even if the current working directory is changed
  29         TEST_DIRECTORY=$(cd "$TEST_DIRECTORY" && pwd) || exit 1
  30 fi
  31 if test -z "$TEST_OUTPUT_DIRECTORY"
  32 then
  33         # Similarly, override this to store the test-results subdir
  34         # elsewhere
  35         TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
  36 fi
  37 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
  38
  39 # If we were built with ASAN, it may complain about leaks
  40 # of program-lifetime variables. Disable it by default to lower
  41 # the noise level. This needs to happen at the start of the script,
  42 # before we even do our "did we build git yet" check (since we don't
  43 # want that one to complain to stderr).
  44 : ${ASAN_OPTIONS=detect_leaks=0:abort_on_error=1}
  45 export ASAN_OPTIONS
  46
  47 # If LSAN is in effect we _do_ want leak checking, but we still
  48 # want to abort so that we notice the problems.
  49 : ${LSAN_OPTIONS=abort_on_error=1}
  50 export LSAN_OPTIONS
  51
  52 if test ! -f "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  53 then
  54         echo >&2 'error: GIT-BUILD-OPTIONS missing (has Git been built?).'
  55         exit 1
  56 fi
  57 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  58 export PERL_PATH SHELL_PATH
  59
  60 ################################################################
  61 # It appears that people try to run tests without building...
  62 "${GIT_TEST_INSTALLED:-$GIT_BUILD_DIR}/git$X" >/dev/null
  63 if test $? != 1
  64 then
  65         if test -n "$GIT_TEST_INSTALLED"
  66         then
  67                 echo >&2 "error: there is no working Git at '$GIT_TEST_INSTALLED'"
  68         else
  69                 echo >&2 'error: you do not seem to have built git yet.'
  70         fi
  71         exit 1
  72 fi
  73
  74 # Parse options while taking care to leave $@ intact, so we will still
  75 # have all the original command line options when executing the test
  76 # script again for '--tee' and '--verbose-log' below.
  77 store_arg_to=
  78 prev_opt=
  79 for opt
  80 do
  81         if test -n "$store_arg_to"
  82         then
  83                 eval $store_arg_to=\$opt
  84                 store_arg_to=
  85                 prev_opt=
  86                 continue
  87         fi
  88
  89         case "$opt" in
  90         -d|--d|--de|--deb|--debu|--debug)
  91                 debug=t ;;
  92         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
  93                 immediate=t ;;
  94         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
  95                 GIT_TEST_LONG=t; export GIT_TEST_LONG ;;
  96         -r)
  97                 store_arg_to=run_list
  98                 ;;
  99         --run=*)
 100                 run_list=${opt#--*=} ;;
 101         -h|--h|--he|--hel|--help)
 102                 help=t ;;
 103         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 104                 verbose=t ;;
 105         --verbose-only=*)
 106                 verbose_only=${opt#--*=}
 107                 ;;
 108         -q|--q|--qu|--qui|--quie|--quiet)
 109                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 110                 # passed without the ok/not ok details is always an error.
 111                 test -z "$HARNESS_ACTIVE" && quiet=t ;;
 112         --with-dashes)
 113                 with_dashes=t ;;
 114         --no-bin-wrappers)
 115                 no_bin_wrappers=t ;;
 116         --no-color)
 117                 color= ;;
 118         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 119                 valgrind=memcheck
 120                 tee=t
 121                 ;;
 122         --valgrind=*)
 123                 valgrind=${opt#--*=}
 124                 tee=t
 125                 ;;
 126         --valgrind-only=*)
 127                 valgrind_only=${opt#--*=}
 128                 tee=t
 129                 ;;
 130         --tee)
 131                 tee=t ;;
 132         --root=*)
 133                 root=${opt#--*=} ;;
 134         --chain-lint)
 135                 GIT_TEST_CHAIN_LINT=1 ;;
 136         --no-chain-lint)
 137                 GIT_TEST_CHAIN_LINT=0 ;;
 138         -x)
 139                 trace=t ;;
 140         -V|--verbose-log)
 141                 verbose_log=t
 142                 tee=t
 143                 ;;
 144         --write-junit-xml)
 145                 write_junit_xml=t
 146                 ;;
 147         --stress)
 148                 stress=t ;;
 149         --stress=*)
 150                 stress=${opt#--*=}
 151                 case "$stress" in
 152                 *[^0-9]*|0*|"")
 153                         echo "error: --stress=<N> requires the number of jobs to run" >&2
 154                         exit 1
 155                         ;;
 156                 *)      # Good.
 157                         ;;
 158                 esac
 159                 ;;
 160         *)
 161                 echo "error: unknown test option '$opt'" >&2; exit 1 ;;
 162         esac
 163
 164         prev_opt=$opt
 165 done
 166 if test -n "$store_arg_to"
 167 then
 168         echo "error: $prev_opt requires an argument" >&2
 169         exit 1
 170 fi
 171
 172 if test -n "$valgrind_only"
 173 then
 174         test -z "$valgrind" && valgrind=memcheck
 175         test -z "$verbose" && verbose_only="$valgrind_only"
 176 elif test -n "$valgrind"
 177 then
 178         test -z "$verbose_log" && verbose=t
 179 fi
 180
 181 if test -n "$stress"
 182 then
 183         verbose=t
 184         trace=t
 185         immediate=t
 186 fi
 187
 188 TEST_STRESS_JOB_SFX="${GIT_TEST_STRESS_JOB_NR:+.stress-$GIT_TEST_STRESS_JOB_NR}"
 189 TEST_NAME="$(basename "$0" .sh)"
 190 TEST_RESULTS_DIR="$TEST_OUTPUT_DIRECTORY/test-results"
 191 TEST_RESULTS_BASE="$TEST_RESULTS_DIR/$TEST_NAME$TEST_STRESS_JOB_SFX"
 192 TRASH_DIRECTORY="trash directory.$TEST_NAME$TEST_STRESS_JOB_SFX"
 193 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 194 case "$TRASH_DIRECTORY" in
 195 /*) ;; # absolute path is good
 196  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 197 esac
 198
 199 # If --stress was passed, run this test repeatedly in several parallel loops.
 200 if test "$GIT_TEST_STRESS_STARTED" = "done"
 201 then
 202         : # Don't stress test again.
 203 elif test -n "$stress"
 204 then
 205         if test "$stress" != t
 206         then
 207                 job_count=$stress
 208         elif test -n "$GIT_TEST_STRESS_LOAD"
 209         then
 210                 job_count="$GIT_TEST_STRESS_LOAD"
 211         elif job_count=$(getconf _NPROCESSORS_ONLN 2>/dev/null) &&
 212              test -n "$job_count"
 213         then
 214                 job_count=$((2 * $job_count))
 215         else
 216                 job_count=8
 217         fi
 218
 219         mkdir -p "$TEST_RESULTS_DIR"
 220         stressfail="$TEST_RESULTS_BASE.stress-failed"
 221         rm -f "$stressfail"
 222
 223         stress_exit=0
 224         trap '
 225                 kill $job_pids 2>/dev/null
 226                 wait
 227                 stress_exit=1
 228         ' TERM INT HUP
 229
 230         job_pids=
 231         job_nr=0
 232         while test $job_nr -lt "$job_count"
 233         do
 234                 (
 235                         GIT_TEST_STRESS_STARTED=done
 236                         GIT_TEST_STRESS_JOB_NR=$job_nr
 237                         export GIT_TEST_STRESS_STARTED GIT_TEST_STRESS_JOB_NR
 238
 239                         trap '
 240                                 kill $test_pid 2>/dev/null
 241                                 wait
 242                                 exit 1
 243                         ' TERM INT
 244
 245                         cnt=0
 246                         while ! test -e "$stressfail"
 247                         do
 248                                 $TEST_SHELL_PATH "$0" "$@" >"$TEST_RESULTS_BASE.stress-$job_nr.out" 2>&1 &
 249                                 test_pid=$!
 250
 251                                 if wait $test_pid
 252                                 then
 253                                         printf "OK   %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 254                                 else
 255                                         echo $GIT_TEST_STRESS_JOB_NR >>"$stressfail"
 256                                         printf "FAIL %2d.%d\n" $GIT_TEST_STRESS_JOB_NR $cnt
 257                                 fi
 258                                 cnt=$(($cnt + 1))
 259                         done
 260                 ) &
 261                 job_pids="$job_pids $!"
 262                 job_nr=$(($job_nr + 1))
 263         done
 264
 265         wait
 266
 267         if test -f "$stressfail"
 268         then
 269                 echo "Log(s) of failed test run(s):"
 270                 for failed_job_nr in $(sort -n "$stressfail")
 271                 do
 272                         echo "Contents of '$TEST_RESULTS_BASE.stress-$failed_job_nr.out':"
 273                         cat "$TEST_RESULTS_BASE.stress-$failed_job_nr.out"
 274                 done
 275                 rm -rf "$TRASH_DIRECTORY.stress-failed"
 276                 # Move the last one.
 277                 mv "$TRASH_DIRECTORY.stress-$failed_job_nr" "$TRASH_DIRECTORY.stress-failed"
 278         fi
 279
 280         exit $stress_exit
 281 fi
 282
 283 # if --tee was passed, write the output not only to the terminal, but
 284 # additionally to the file test-results/$BASENAME.out, too.
 285 if test "$GIT_TEST_TEE_STARTED" = "done"
 286 then
 287         : # do not redirect again
 288 elif test -n "$tee"
 289 then
 290         mkdir -p "$TEST_RESULTS_DIR"
 291
 292         # Make this filename available to the sub-process in case it is using
 293         # --verbose-log.
 294         GIT_TEST_TEE_OUTPUT_FILE=$TEST_RESULTS_BASE.out
 295         export GIT_TEST_TEE_OUTPUT_FILE
 296
 297         # Truncate before calling "tee -a" to get rid of the results
 298         # from any previous runs.
 299         >"$GIT_TEST_TEE_OUTPUT_FILE"
 300
 301         (GIT_TEST_TEE_STARTED=done ${TEST_SHELL_PATH} "$0" "$@" 2>&1;
 302          echo $? >"$TEST_RESULTS_BASE.exit") | tee -a "$GIT_TEST_TEE_OUTPUT_FILE"
 303         test "$(cat "$TEST_RESULTS_BASE.exit")" = 0
 304         exit
 305 fi
 306
 307 if test -n "$trace" && test -n "$test_untraceable"
 308 then
 309         # '-x' tracing requested, but this test script can't be reliably
 310         # traced, unless it is run with a Bash version supporting
 311         # BASH_XTRACEFD (introduced in Bash v4.1).
 312         #
 313         # Perform this version check _after_ the test script was
 314         # potentially re-executed with $TEST_SHELL_PATH for '--tee' or
 315         # '--verbose-log', so the right shell is checked and the
 316         # warning is issued only once.
 317         if test -n "$BASH_VERSION" && eval '
 318              test ${BASH_VERSINFO[0]} -gt 4 || {
 319                test ${BASH_VERSINFO[0]} -eq 4 &&
 320                test ${BASH_VERSINFO[1]} -ge 1
 321              }
 322            '
 323         then
 324                 : Executed by a Bash version supporting BASH_XTRACEFD.  Good.
 325         else
 326                 echo >&2 "warning: ignoring -x; '$0' is untraceable without BASH_XTRACEFD"
 327                 trace=
 328         fi
 329 fi
 330 if test -n "$trace" && test -z "$verbose_log"
 331 then
 332         verbose=t
 333 fi
 334
 335 # For repeatability, reset the environment to known value.
 336 # TERM is sanitized below, after saving color control sequences.
 337 LANG=C
 338 LC_ALL=C
 339 PAGER=cat
 340 TZ=UTC
 341 export LANG LC_ALL PAGER TZ
 342 EDITOR=:
 343
 344 # GIT_TEST_GETTEXT_POISON should not influence git commands executed
 345 # during initialization of test-lib and the test repo. Back it up,
 346 # unset and then restore after initialization is finished.
 347 if test -n "$GIT_TEST_GETTEXT_POISON"
 348 then
 349         GIT_TEST_GETTEXT_POISON_ORIG=$GIT_TEST_GETTEXT_POISON
 350         unset GIT_TEST_GETTEXT_POISON
 351 fi
 352
 353 # A call to "unset" with no arguments causes at least Solaris 10
 354 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
 355 # deriving from the command substitution clustered with the other
 356 # ones.
 357 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
 358         my @env = keys %ENV;
 359         my $ok = join("|", qw(
 360                 TRACE
 361                 DEBUG
 362                 TEST
 363                 .*_TEST
 364                 PROVE
 365                 VALGRIND
 366                 UNZIP
 367                 PERF_
 368                 CURL_VERBOSE
 369                 TRACE_CURL
 370         ));
 371         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 372         print join("\n", @vars);
 373 ')
 374 unset XDG_CACHE_HOME
 375 unset XDG_CONFIG_HOME
 376 unset GITPERLLIB
 377 GIT_AUTHOR_EMAIL=author@example.com
 378 GIT_AUTHOR_NAME='A U Thor'
 379 GIT_COMMITTER_EMAIL=committer@example.com
 380 GIT_COMMITTER_NAME='C O Mitter'
 381 GIT_MERGE_VERBOSITY=5
 382 GIT_MERGE_AUTOEDIT=no
 383 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 384 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 385 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 386 export EDITOR
 387
 388 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 389 GIT_TRACE_BARE=1
 390 export GIT_TRACE_BARE
 391
 392 check_var_migration () {
 393         # the warnings and hints given from this helper depends
 394         # on end-user settings, which will disrupt the self-test
 395         # done on the test framework itself.
 396         case "$GIT_TEST_FRAMEWORK_SELFTEST" in
 397         t)      return ;;
 398         esac
 399
 400         old_name=$1 new_name=$2
 401         eval "old_isset=\${${old_name}:+isset}"
 402         eval "new_isset=\${${new_name}:+isset}"
 403
 404         case "$old_isset,$new_isset" in
 405         isset,)
 406                 echo >&2 "warning: $old_name is now $new_name"
 407                 echo >&2 "hint: set $new_name too during the transition period"
 408                 eval "$new_name=\$$old_name"
 409                 ;;
 410         isset,isset)
 411                 # do this later
 412                 # echo >&2 "warning: $old_name is now $new_name"
 413                 # echo >&2 "hint: remove $old_name"
 414                 ;;
 415         esac
 416 }
 417
 418 check_var_migration GIT_FSMONITOR_TEST GIT_TEST_FSMONITOR
 419 check_var_migration TEST_GIT_INDEX_VERSION GIT_TEST_INDEX_VERSION
 420 check_var_migration GIT_FORCE_PRELOAD_TEST GIT_TEST_PRELOAD_INDEX
 421
 422 # Use specific version of the index file format
 423 if test -n "${GIT_TEST_INDEX_VERSION:+isset}"
 424 then
 425         GIT_INDEX_VERSION="$GIT_TEST_INDEX_VERSION"
 426         export GIT_INDEX_VERSION
 427 fi
 428
 429 # Add libc MALLOC and MALLOC_PERTURB test
 430 # only if we are not executing the test with valgrind
 431 if test -n "$valgrind" ||
 432    test -n "$TEST_NO_MALLOC_CHECK"
 433 then
 434         setup_malloc_check () {
 435                 : nothing
 436         }
 437         teardown_malloc_check () {
 438                 : nothing
 439         }
 440 else
 441         setup_malloc_check () {
 442                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 443                 export MALLOC_CHECK_ MALLOC_PERTURB_
 444         }
 445         teardown_malloc_check () {
 446                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 447         }
 448 fi
 449
 450 # Protect ourselves from common misconfiguration to export
 451 # CDPATH into the environment
 452 unset CDPATH
 453
 454 unset GREP_OPTIONS
 455 unset UNZIP
 456
 457 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 458 1|2|true)
 459         GIT_TRACE=4
 460         ;;
 461 esac
 462
 463 # Convenience
 464 #
 465 # A regexp to match 5, 35 and 40 hexdigits
 466 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 467 _x35="$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 468 _x40="$_x35$_x05"
 469
 470 # Zero SHA-1
 471 _z40=0000000000000000000000000000000000000000
 472
 473 OID_REGEX="$_x40"
 474 ZERO_OID=$_z40
 475 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
 476 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
 477
 478 # Line feed
 479 LF='
 480 '
 481
 482 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 483 # when case-folding filenames
 484 u200c=$(printf '\342\200\214')
 485
 486 export _x05 _x35 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB ZERO_OID OID_REGEX
 487
 488 # Each test should start with something like this, after copyright notices:
 489 #
 490 # test_description='Description of this test...
 491 # This test checks if command xyzzy does the right thing...
 492 # '
 493 # . ./test-lib.sh
 494 test "x$TERM" != "xdumb" && (
 495                 test -t 1 &&
 496                 tput bold >/dev/null 2>&1 &&
 497                 tput setaf 1 >/dev/null 2>&1 &&
 498                 tput sgr0 >/dev/null 2>&1
 499         ) &&
 500         color=t
 501
 502 if test -n "$color"
 503 then
 504         # Save the color control sequences now rather than run tput
 505         # each time say_color() is called.  This is done for two
 506         # reasons:
 507         #   * TERM will be changed to dumb
 508         #   * HOME will be changed to a temporary directory and tput
 509         #     might need to read ~/.terminfo from the original HOME
 510         #     directory to get the control sequences
 511         # Note:  This approach assumes the control sequences don't end
 512         # in a newline for any terminal of interest (command
 513         # substitutions strip trailing newlines).  Given that most
 514         # (all?) terminals in common use are related to ECMA-48, this
 515         # shouldn't be a problem.
 516         say_color_error=$(tput bold; tput setaf 1) # bold red
 517         say_color_skip=$(tput setaf 4) # blue
 518         say_color_warn=$(tput setaf 3) # brown/yellow
 519         say_color_pass=$(tput setaf 2) # green
 520         say_color_info=$(tput setaf 6) # cyan
 521         say_color_reset=$(tput sgr0)
 522         say_color_="" # no formatting for normal text
 523         say_color () {
 524                 test -z "$1" && test -n "$quiet" && return
 525                 eval "say_color_color=\$say_color_$1"
 526                 shift
 527                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 528         }
 529 else
 530         say_color() {
 531                 test -z "$1" && test -n "$quiet" && return
 532                 shift
 533                 printf "%s\n" "$*"
 534         }
 535 fi
 536
 537 TERM=dumb
 538 export TERM
 539
 540 error () {
 541         say_color error "error: $*"
 542         GIT_EXIT_OK=t
 543         exit 1
 544 }
 545
 546 BUG () {
 547         error >&7 "bug in the test script: $*"
 548 }
 549
 550 say () {
 551         say_color info "$*"
 552 }
 553
 554 if test -n "$HARNESS_ACTIVE"
 555 then
 556         if test "$verbose" = t || test -n "$verbose_only"
 557         then
 558                 printf 'Bail out! %s\n' \
 559                  'verbose mode forbidden under TAP harness; try --verbose-log'
 560                 exit 1
 561         fi
 562 fi
 563
 564 test "${test_description}" != "" ||
 565 error "Test script did not set test_description."
 566
 567 if test "$help" = "t"
 568 then
 569         printf '%s\n' "$test_description"
 570         exit 0
 571 fi
 572
 573 exec 5>&1
 574 exec 6<&0
 575 exec 7>&2
 576 if test "$verbose_log" = "t"
 577 then
 578         exec 3>>"$GIT_TEST_TEE_OUTPUT_FILE" 4>&3
 579 elif test "$verbose" = "t"
 580 then
 581         exec 4>&2 3>&1
 582 else
 583         exec 4>/dev/null 3>/dev/null
 584 fi
 585
 586 # Send any "-x" output directly to stderr to avoid polluting tests
 587 # which capture stderr. We can do this unconditionally since it
 588 # has no effect if tracing isn't turned on.
 589 #
 590 # Note that this sets up the trace fd as soon as we assign the variable, so it
 591 # must come after the creation of descriptor 4 above. Likewise, we must never
 592 # unset this, as it has the side effect of closing descriptor 4, which we
 593 # use to show verbose tests to the user.
 594 #
 595 # Note also that we don't need or want to export it. The tracing is local to
 596 # this shell, and we would not want to influence any shells we exec.
 597 BASH_XTRACEFD=4
 598
 599 test_failure=0
 600 test_count=0
 601 test_fixed=0
 602 test_broken=0
 603 test_success=0
 604
 605 test_external_has_tap=0
 606
 607 die () {
 608         code=$?
 609         if test -n "$GIT_EXIT_OK"
 610         then
 611                 exit $code
 612         else
 613                 echo >&5 "FATAL: Unexpected exit with code $code"
 614                 exit 1
 615         fi
 616 }
 617
 618 GIT_EXIT_OK=
 619 trap 'die' EXIT
 620 trap 'exit $?' INT TERM HUP
 621
 622 # The user-facing functions are loaded from a separate file so that
 623 # test_perf subshells can have them too
 624 . "$TEST_DIRECTORY/test-lib-functions.sh"
 625
 626 # You are not expected to call test_ok_ and test_failure_ directly, use
 627 # the test_expect_* functions instead.
 628
 629 test_ok_ () {
 630         if test -n "$write_junit_xml"
 631         then
 632                 write_junit_xml_testcase "$*"
 633         fi
 634         test_success=$(($test_success + 1))
 635         say_color "" "ok $test_count - $@"
 636 }
 637
 638 test_failure_ () {
 639         if test -n "$write_junit_xml"
 640         then
 641                 junit_insert="<failure message=\"not ok $test_count -"
 642                 junit_insert="$junit_insert $(xml_attr_encode "$1")\">"
 643                 junit_insert="$junit_insert $(xml_attr_encode \
 644                         "$(if test -n "$GIT_TEST_TEE_OUTPUT_FILE"
 645                            then
 646                                 test-tool path-utils skip-n-bytes \
 647                                         "$GIT_TEST_TEE_OUTPUT_FILE" $GIT_TEST_TEE_OFFSET
 648                            else
 649                                 printf '%s\n' "$@" | sed 1d
 650                            fi)")"
 651                 junit_insert="$junit_insert</failure>"
 652                 if test -n "$GIT_TEST_TEE_OUTPUT_FILE"
 653                 then
 654                         junit_insert="$junit_insert<system-err>$(xml_attr_encode \
 655                                 "$(cat "$GIT_TEST_TEE_OUTPUT_FILE")")</system-err>"
 656                 fi
 657                 write_junit_xml_testcase "$1" "      $junit_insert"
 658         fi
 659         test_failure=$(($test_failure + 1))
 660         say_color error "not ok $test_count - $1"
 661         shift
 662         printf '%s\n' "$*" | sed -e 's/^/#      /'
 663         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 664 }
 665
 666 test_known_broken_ok_ () {
 667         if test -n "$write_junit_xml"
 668         then
 669                 write_junit_xml_testcase "$* (breakage fixed)"
 670         fi
 671         test_fixed=$(($test_fixed+1))
 672         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 673 }
 674
 675 test_known_broken_failure_ () {
 676         if test -n "$write_junit_xml"
 677         then
 678                 write_junit_xml_testcase "$* (known breakage)"
 679         fi
 680         test_broken=$(($test_broken+1))
 681         say_color warn "not ok $test_count - $@ # TODO known breakage"
 682 }
 683
 684 test_debug () {
 685         test "$debug" = "" || eval "$1"
 686 }
 687
 688 match_pattern_list () {
 689         arg="$1"
 690         shift
 691         test -z "$*" && return 1
 692         for pattern_
 693         do
 694                 case "$arg" in
 695                 $pattern_)
 696                         return 0
 697                 esac
 698         done
 699         return 1
 700 }
 701
 702 match_test_selector_list () {
 703         title="$1"
 704         shift
 705         arg="$1"
 706         shift
 707         test -z "$1" && return 0
 708
 709         # Both commas and whitespace are accepted as separators.
 710         OLDIFS=$IFS
 711         IFS='   ,'
 712         set -- $1
 713         IFS=$OLDIFS
 714
 715         # If the first selector is negative we include by default.
 716         include=
 717         case "$1" in
 718                 !*) include=t ;;
 719         esac
 720
 721         for selector
 722         do
 723                 orig_selector=$selector
 724
 725                 positive=t
 726                 case "$selector" in
 727                         !*)
 728                                 positive=
 729                                 selector=${selector##?}
 730                                 ;;
 731                 esac
 732
 733                 test -z "$selector" && continue
 734
 735                 case "$selector" in
 736                         *-*)
 737                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 738                                 then
 739                                         echo "error: $title: invalid non-numeric in range" \
 740                                                 "start: '$orig_selector'" >&2
 741                                         exit 1
 742                                 fi
 743                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 744                                 then
 745                                         echo "error: $title: invalid non-numeric in range" \
 746                                                 "end: '$orig_selector'" >&2
 747                                         exit 1
 748                                 fi
 749                                 ;;
 750                         *)
 751                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 752                                 then
 753                                         echo "error: $title: invalid non-numeric in test" \
 754                                                 "selector: '$orig_selector'" >&2
 755                                         exit 1
 756                                 fi
 757                 esac
 758
 759                 # Short cut for "obvious" cases
 760                 test -z "$include" && test -z "$positive" && continue
 761                 test -n "$include" && test -n "$positive" && continue
 762
 763                 case "$selector" in
 764                         -*)
 765                                 if test $arg -le ${selector#-}
 766                                 then
 767                                         include=$positive
 768                                 fi
 769                                 ;;
 770                         *-)
 771                                 if test $arg -ge ${selector%-}
 772                                 then
 773                                         include=$positive
 774                                 fi
 775                                 ;;
 776                         *-*)
 777                                 if test ${selector%%-*} -le $arg \
 778                                         && test $arg -le ${selector#*-}
 779                                 then
 780                                         include=$positive
 781                                 fi
 782                                 ;;
 783                         *)
 784                                 if test $arg -eq $selector
 785                                 then
 786                                         include=$positive
 787                                 fi
 788                                 ;;
 789                 esac
 790         done
 791
 792         test -n "$include"
 793 }
 794
 795 maybe_teardown_verbose () {
 796         test -z "$verbose_only" && return
 797         exec 4>/dev/null 3>/dev/null
 798         verbose=
 799 }
 800
 801 last_verbose=t
 802 maybe_setup_verbose () {
 803         test -z "$verbose_only" && return
 804         if match_pattern_list $test_count $verbose_only
 805         then
 806                 exec 4>&2 3>&1
 807                 # Emit a delimiting blank line when going from
 808                 # non-verbose to verbose.  Within verbose mode the
 809                 # delimiter is printed by test_expect_*.  The choice
 810                 # of the initial $last_verbose is such that before
 811                 # test 1, we do not print it.
 812                 test -z "$last_verbose" && echo >&3 ""
 813                 verbose=t
 814         else
 815                 exec 4>/dev/null 3>/dev/null
 816                 verbose=
 817         fi
 818         last_verbose=$verbose
 819 }
 820
 821 maybe_teardown_valgrind () {
 822         test -z "$GIT_VALGRIND" && return
 823         GIT_VALGRIND_ENABLED=
 824 }
 825
 826 maybe_setup_valgrind () {
 827         test -z "$GIT_VALGRIND" && return
 828         if test -z "$valgrind_only"
 829         then
 830                 GIT_VALGRIND_ENABLED=t
 831                 return
 832         fi
 833         GIT_VALGRIND_ENABLED=
 834         if match_pattern_list $test_count $valgrind_only
 835         then
 836                 GIT_VALGRIND_ENABLED=t
 837         fi
 838 }
 839
 840 want_trace () {
 841         test "$trace" = t && {
 842                 test "$verbose" = t || test "$verbose_log" = t
 843         }
 844 }
 845
 846 # This is a separate function because some tests use
 847 # "return" to end a test_expect_success block early
 848 # (and we want to make sure we run any cleanup like
 849 # "set +x").
 850 test_eval_inner_ () {
 851         # Do not add anything extra (including LF) after '$*'
 852         eval "
 853                 want_trace && set -x
 854                 $*"
 855 }
 856
 857 test_eval_ () {
 858         # If "-x" tracing is in effect, then we want to avoid polluting stderr
 859         # with non-test commands. But once in "set -x" mode, we cannot prevent
 860         # the shell from printing the "set +x" to turn it off (nor the saving
 861         # of $? before that). But we can make sure that the output goes to
 862         # /dev/null.
 863         #
 864         # There are a few subtleties here:
 865         #
 866         #   - we have to redirect descriptor 4 in addition to 2, to cover
 867         #     BASH_XTRACEFD
 868         #
 869         #   - the actual eval has to come before the redirection block (since
 870         #     it needs to see descriptor 4 to set up its stderr)
 871         #
 872         #   - likewise, any error message we print must be outside the block to
 873         #     access descriptor 4
 874         #
 875         #   - checking $? has to come immediately after the eval, but it must
 876         #     be _inside_ the block to avoid polluting the "set -x" output
 877         #
 878
 879         test_eval_inner_ "$@" </dev/null >&3 2>&4
 880         {
 881                 test_eval_ret_=$?
 882                 if want_trace
 883                 then
 884                         set +x
 885                 fi
 886         } 2>/dev/null 4>&2
 887
 888         if test "$test_eval_ret_" != 0 && want_trace
 889         then
 890                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 891         fi
 892         return $test_eval_ret_
 893 }
 894
 895 test_run_ () {
 896         test_cleanup=:
 897         expecting_failure=$2
 898
 899         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 900                 # turn off tracing for this test-eval, as it simply creates
 901                 # confusing noise in the "-x" output
 902                 trace_tmp=$trace
 903                 trace=
 904                 # 117 is magic because it is unlikely to match the exit
 905                 # code of other programs
 906                 if $(printf '%s\n' "$1" | sed -f "$GIT_BUILD_DIR/t/chainlint.sed" | grep -q '?![A-Z][A-Z]*?!') ||
 907                         test "OK-117" != "$(test_eval_ "(exit 117) && $1${LF}${LF}echo OK-\$?" 3>&1)"
 908                 then
 909                         BUG "broken &&-chain or run-away HERE-DOC: $1"
 910                 fi
 911                 trace=$trace_tmp
 912         fi
 913
 914         setup_malloc_check
 915         test_eval_ "$1"
 916         eval_ret=$?
 917         teardown_malloc_check
 918
 919         if test -z "$immediate" || test $eval_ret = 0 ||
 920            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 921         then
 922                 setup_malloc_check
 923                 test_eval_ "$test_cleanup"
 924                 teardown_malloc_check
 925         fi
 926         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 927         then
 928                 echo ""
 929         fi
 930         return "$eval_ret"
 931 }
 932
 933 test_start_ () {
 934         test_count=$(($test_count+1))
 935         maybe_setup_verbose
 936         maybe_setup_valgrind
 937         if test -n "$write_junit_xml"
 938         then
 939                 junit_start=$(test-tool date getnanos)
 940         fi
 941 }
 942
 943 test_finish_ () {
 944         echo >&3 ""
 945         maybe_teardown_valgrind
 946         maybe_teardown_verbose
 947         if test -n "$GIT_TEST_TEE_OFFSET"
 948         then
 949                 GIT_TEST_TEE_OFFSET=$(test-tool path-utils file-size \
 950                         "$GIT_TEST_TEE_OUTPUT_FILE")
 951         fi
 952 }
 953
 954 test_skip () {
 955         to_skip=
 956         skipped_reason=
 957         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 958         then
 959                 to_skip=t
 960                 skipped_reason="GIT_SKIP_TESTS"
 961         fi
 962         if test -z "$to_skip" && test -n "$test_prereq" &&
 963            ! test_have_prereq "$test_prereq"
 964         then
 965                 to_skip=t
 966
 967                 of_prereq=
 968                 if test "$missing_prereq" != "$test_prereq"
 969                 then
 970                         of_prereq=" of $test_prereq"
 971                 fi
 972                 skipped_reason="missing $missing_prereq${of_prereq}"
 973         fi
 974         if test -z "$to_skip" && test -n "$run_list" &&
 975                 ! match_test_selector_list '--run' $test_count "$run_list"
 976         then
 977                 to_skip=t
 978                 skipped_reason="--run"
 979         fi
 980
 981         case "$to_skip" in
 982         t)
 983                 if test -n "$write_junit_xml"
 984                 then
 985                         message="$(xml_attr_encode "$skipped_reason")"
 986                         write_junit_xml_testcase "$1" \
 987                                 "      <skipped message=\"$message\" />"
 988                 fi
 989
 990                 say_color skip >&3 "skipping test: $@"
 991                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 992                 : true
 993                 ;;
 994         *)
 995                 false
 996                 ;;
 997         esac
 998 }
 999
1000 # stub; perf-lib overrides it
1001 test_at_end_hook_ () {
1002         :
1003 }
1004
1005 write_junit_xml () {
1006         case "$1" in
1007         --truncate)
1008                 >"$junit_xml_path"
1009                 junit_have_testcase=
1010                 shift
1011                 ;;
1012         esac
1013         printf '%s\n' "$@" >>"$junit_xml_path"
1014 }
1015
1016 xml_attr_encode () {
1017         printf '%s\n' "$@" | test-tool xml-encode
1018 }
1019
1020 write_junit_xml_testcase () {
1021         junit_attrs="name=\"$(xml_attr_encode "$this_test.$test_count $1")\""
1022         shift
1023         junit_attrs="$junit_attrs classname=\"$this_test\""
1024         junit_attrs="$junit_attrs time=\"$(test-tool \
1025                 date getnanos $junit_start)\""
1026         write_junit_xml "$(printf '%s\n' \
1027                 "    <testcase $junit_attrs>" "$@" "    </testcase>")"
1028         junit_have_testcase=t
1029 }
1030
1031 test_done () {
1032         GIT_EXIT_OK=t
1033
1034         if test -n "$write_junit_xml" && test -n "$junit_xml_path"
1035         then
1036                 test -n "$junit_have_testcase" || {
1037                         junit_start=$(test-tool date getnanos)
1038                         write_junit_xml_testcase "all tests skipped"
1039                 }
1040
1041                 # adjust the overall time
1042                 junit_time=$(test-tool date getnanos $junit_suite_start)
1043                 sed "s/<testsuite [^>]*/& time=\"$junit_time\"/" \
1044                         <"$junit_xml_path" >"$junit_xml_path.new"
1045                 mv "$junit_xml_path.new" "$junit_xml_path"
1046
1047                 write_junit_xml "  </testsuite>" "</testsuites>"
1048         fi
1049
1050         if test -z "$HARNESS_ACTIVE"
1051         then
1052                 mkdir -p "$TEST_RESULTS_DIR"
1053
1054                 cat >"$TEST_RESULTS_BASE.counts" <<-EOF
1055                 total $test_count
1056                 success $test_success
1057                 fixed $test_fixed
1058                 broken $test_broken
1059                 failed $test_failure
1060
1061                 EOF
1062         fi
1063
1064         if test "$test_fixed" != 0
1065         then
1066                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
1067         fi
1068         if test "$test_broken" != 0
1069         then
1070                 say_color warn "# still have $test_broken known breakage(s)"
1071         fi
1072         if test "$test_broken" != 0 || test "$test_fixed" != 0
1073         then
1074                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
1075                 msg="remaining $test_remaining test(s)"
1076         else
1077                 test_remaining=$test_count
1078                 msg="$test_count test(s)"
1079         fi
1080         case "$test_failure" in
1081         0)
1082                 if test $test_external_has_tap -eq 0
1083                 then
1084                         if test $test_remaining -gt 0
1085                         then
1086                                 say_color pass "# passed all $msg"
1087                         fi
1088
1089                         # Maybe print SKIP message
1090                         test -z "$skip_all" || skip_all="# SKIP $skip_all"
1091                         case "$test_count" in
1092                         0)
1093                                 say "1..$test_count${skip_all:+ $skip_all}"
1094                                 ;;
1095                         *)
1096                                 test -z "$skip_all" ||
1097                                 say_color warn "$skip_all"
1098                                 say "1..$test_count"
1099                                 ;;
1100                         esac
1101                 fi
1102
1103                 if test -z "$debug"
1104                 then
1105                         test -d "$TRASH_DIRECTORY" ||
1106                         error "Tests passed but trash directory already removed before test cleanup; aborting"
1107
1108                         cd "$TRASH_DIRECTORY/.." &&
1109                         rm -fr "$TRASH_DIRECTORY" || {
1110                                 # try again in a bit
1111                                 sleep 5;
1112                                 rm -fr "$TRASH_DIRECTORY"
1113                         } ||
1114                         error "Tests passed but test cleanup failed; aborting"
1115                 fi
1116                 test_at_end_hook_
1117
1118                 exit 0 ;;
1119
1120         *)
1121                 if test $test_external_has_tap -eq 0
1122                 then
1123                         say_color error "# failed $test_failure among $msg"
1124                         say "1..$test_count"
1125                 fi
1126
1127                 exit 1 ;;
1128
1129         esac
1130 }
1131
1132 if test -n "$valgrind"
1133 then
1134         make_symlink () {
1135                 test -h "$2" &&
1136                 test "$1" = "$(readlink "$2")" || {
1137                         # be super paranoid
1138                         if mkdir "$2".lock
1139                         then
1140                                 rm -f "$2" &&
1141                                 ln -s "$1" "$2" &&
1142                                 rm -r "$2".lock
1143                         else
1144                                 while test -d "$2".lock
1145                                 do
1146                                         say "Waiting for lock on $2."
1147                                         sleep 1
1148                                 done
1149                         fi
1150                 }
1151         }
1152
1153         make_valgrind_symlink () {
1154                 # handle only executables, unless they are shell libraries that
1155                 # need to be in the exec-path.
1156                 test -x "$1" ||
1157                 test "# " = "$(test_copy_bytes 2 <"$1")" ||
1158                 return;
1159
1160                 base=$(basename "$1")
1161                 case "$base" in
1162                 test-*)
1163                         symlink_target="$GIT_BUILD_DIR/t/helper/$base"
1164                         ;;
1165                 *)
1166                         symlink_target="$GIT_BUILD_DIR/$base"
1167                         ;;
1168                 esac
1169                 # do not override scripts
1170                 if test -x "$symlink_target" &&
1171                     test ! -d "$symlink_target" &&
1172                     test "#!" != "$(test_copy_bytes 2 <"$symlink_target")"
1173                 then
1174                         symlink_target=../valgrind.sh
1175                 fi
1176                 case "$base" in
1177                 *.sh|*.perl)
1178                         symlink_target=../unprocessed-script
1179                 esac
1180                 # create the link, or replace it if it is out of date
1181                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
1182         }
1183
1184         # override all git executables in TEST_DIRECTORY/..
1185         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
1186         mkdir -p "$GIT_VALGRIND"/bin
1187         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
1188         do
1189                 make_valgrind_symlink $file
1190         done
1191         # special-case the mergetools loadables
1192         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
1193         OLDIFS=$IFS
1194         IFS=:
1195         for path in $PATH
1196         do
1197                 ls "$path"/git-* 2> /dev/null |
1198                 while read file
1199                 do
1200                         make_valgrind_symlink "$file"
1201                 done
1202         done
1203         IFS=$OLDIFS
1204         PATH=$GIT_VALGRIND/bin:$PATH
1205         GIT_EXEC_PATH=$GIT_VALGRIND/bin
1206         export GIT_VALGRIND
1207         GIT_VALGRIND_MODE="$valgrind"
1208         export GIT_VALGRIND_MODE
1209         GIT_VALGRIND_ENABLED=t
1210         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
1211         export GIT_VALGRIND_ENABLED
1212 elif test -n "$GIT_TEST_INSTALLED"
1213 then
1214         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
1215         error "Cannot run git from $GIT_TEST_INSTALLED."
1216         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR/t/helper:$PATH
1217         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
1218 else # normal case, use ../bin-wrappers only unless $with_dashes:
1219         if test -n "$no_bin_wrappers"
1220         then
1221                 with_dashes=t
1222         else
1223                 git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
1224                 if ! test -x "$git_bin_dir/git"
1225                 then
1226                         if test -z "$with_dashes"
1227                         then
1228                                 say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
1229                         fi
1230                         with_dashes=t
1231                 fi
1232                 PATH="$git_bin_dir:$PATH"
1233         fi
1234         GIT_EXEC_PATH=$GIT_BUILD_DIR
1235         if test -n "$with_dashes"
1236         then
1237                 PATH="$GIT_BUILD_DIR:$GIT_BUILD_DIR/t/helper:$PATH"
1238         fi
1239 fi
1240 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
1241 GIT_CONFIG_NOSYSTEM=1
1242 GIT_ATTR_NOSYSTEM=1
1243 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
1244
1245 if test -z "$GIT_TEST_CMP"
1246 then
1247         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
1248         then
1249                 GIT_TEST_CMP="$DIFF -c"
1250         else
1251                 GIT_TEST_CMP="$DIFF -u"
1252         fi
1253 fi
1254
1255 GITPERLLIB="$GIT_BUILD_DIR"/perl/build/lib
1256 export GITPERLLIB
1257 test -d "$GIT_BUILD_DIR"/templates/blt || {
1258         error "You haven't built things yet, have you?"
1259 }
1260
1261 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-tool$X
1262 then
1263         echo >&2 'You need to build test-tool:'
1264         echo >&2 'Run "make t/helper/test-tool" in the source (toplevel) directory'
1265         exit 1
1266 fi
1267
1268 # Test repository
1269 rm -fr "$TRASH_DIRECTORY" || {
1270         GIT_EXIT_OK=t
1271         echo >&5 "FATAL: Cannot prepare test area"
1272         exit 1
1273 }
1274
1275 HOME="$TRASH_DIRECTORY"
1276 GNUPGHOME="$HOME/gnupg-home-not-used"
1277 export HOME GNUPGHOME
1278
1279 if test -z "$TEST_NO_CREATE_REPO"
1280 then
1281         test_create_repo "$TRASH_DIRECTORY"
1282 else
1283         mkdir -p "$TRASH_DIRECTORY"
1284 fi
1285
1286 # Use -P to resolve symlinks in our working directory so that the cwd
1287 # in subprocesses like git equals our $PWD (for pathname comparisons).
1288 cd -P "$TRASH_DIRECTORY" || exit 1
1289
1290 this_test=${0##*/}
1291 this_test=${this_test%%-*}
1292 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
1293 then
1294         say_color info >&3 "skipping test $this_test altogether"
1295         skip_all="skip all tests in $this_test"
1296         test_done
1297 fi
1298
1299 if test -n "$write_junit_xml"
1300 then
1301         junit_xml_dir="$TEST_OUTPUT_DIRECTORY/out"
1302         mkdir -p "$junit_xml_dir"
1303         junit_xml_base=${0##*/}
1304         junit_xml_path="$junit_xml_dir/TEST-${junit_xml_base%.sh}.xml"
1305         junit_attrs="name=\"${junit_xml_base%.sh}\""
1306         junit_attrs="$junit_attrs timestamp=\"$(TZ=UTC \
1307                 date +%Y-%m-%dT%H:%M:%S)\""
1308         write_junit_xml --truncate "<testsuites>" "  <testsuite $junit_attrs>"
1309         junit_suite_start=$(test-tool date getnanos)
1310         if test -n "$GIT_TEST_TEE_OUTPUT_FILE"
1311         then
1312                 GIT_TEST_TEE_OFFSET=0
1313         fi
1314 fi
1315
1316 # Provide an implementation of the 'yes' utility
1317 yes () {
1318         if test $# = 0
1319         then
1320                 y=y
1321         else
1322                 y="$*"
1323         fi
1324
1325         i=0
1326         while test $i -lt 99
1327         do
1328                 echo "$y"
1329                 i=$(($i+1))
1330         done
1331 }
1332
1333 # Fix some commands on Windows
1334 uname_s=$(uname -s)
1335 case $uname_s in
1336 *MINGW*)
1337         # Windows has its own (incompatible) sort and find
1338         sort () {
1339                 /usr/bin/sort "$@"
1340         }
1341         find () {
1342                 /usr/bin/find "$@"
1343         }
1344         # git sees Windows-style pwd
1345         pwd () {
1346                 builtin pwd -W
1347         }
1348         # no POSIX permissions
1349         # backslashes in pathspec are converted to '/'
1350         # exec does not inherit the PID
1351         test_set_prereq MINGW
1352         test_set_prereq NATIVE_CRLF
1353         test_set_prereq SED_STRIPS_CR
1354         test_set_prereq GREP_STRIPS_CR
1355         GIT_TEST_CMP=mingw_test_cmp
1356         ;;
1357 *CYGWIN*)
1358         test_set_prereq POSIXPERM
1359         test_set_prereq EXECKEEPSPID
1360         test_set_prereq CYGWIN
1361         test_set_prereq SED_STRIPS_CR
1362         test_set_prereq GREP_STRIPS_CR
1363         ;;
1364 *)
1365         test_set_prereq POSIXPERM
1366         test_set_prereq BSLASHPSPEC
1367         test_set_prereq EXECKEEPSPID
1368         ;;
1369 esac
1370
1371 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1372 test -z "$NO_PERL" && test_set_prereq PERL
1373 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
1374 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1375 test -n "$USE_LIBPCRE1$USE_LIBPCRE2" && test_set_prereq PCRE
1376 test -n "$USE_LIBPCRE1" && test_set_prereq LIBPCRE1
1377 test -n "$USE_LIBPCRE2" && test_set_prereq LIBPCRE2
1378 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1379
1380 if test -n "$GIT_TEST_GETTEXT_POISON_ORIG"
1381 then
1382         GIT_TEST_GETTEXT_POISON=$GIT_TEST_GETTEXT_POISON_ORIG
1383         unset GIT_TEST_GETTEXT_POISON_ORIG
1384 fi
1385
1386 # Can we rely on git's output in the C locale?
1387 if test -z "$GIT_TEST_GETTEXT_POISON"
1388 then
1389         test_set_prereq C_LOCALE_OUTPUT
1390 fi
1391
1392 if test -z "$GIT_TEST_CHECK_CACHE_TREE"
1393 then
1394         GIT_TEST_CHECK_CACHE_TREE=true
1395         export GIT_TEST_CHECK_CACHE_TREE
1396 fi
1397
1398 test_lazy_prereq PIPE '
1399         # test whether the filesystem supports FIFOs
1400         test_have_prereq !MINGW,!CYGWIN &&
1401         rm -f testfifo && mkfifo testfifo
1402 '
1403
1404 test_lazy_prereq SYMLINKS '
1405         # test whether the filesystem supports symbolic links
1406         ln -s x y && test -h y
1407 '
1408
1409 test_lazy_prereq FILEMODE '
1410         test "$(git config --bool core.filemode)" = true
1411 '
1412
1413 test_lazy_prereq CASE_INSENSITIVE_FS '
1414         echo good >CamelCase &&
1415         echo bad >camelcase &&
1416         test "$(cat CamelCase)" != good
1417 '
1418
1419 test_lazy_prereq FUNNYNAMES '
1420         test_have_prereq !MINGW &&
1421         touch -- \
1422                 "FUNNYNAMES tab embedded" \
1423                 "FUNNYNAMES \"quote embedded\"" \
1424                 "FUNNYNAMES newline
1425 embedded" 2>/dev/null &&
1426         rm -- \
1427                 "FUNNYNAMES tab embedded" \
1428                 "FUNNYNAMES \"quote embedded\"" \
1429                 "FUNNYNAMES newline
1430 embedded" 2>/dev/null
1431 '
1432
1433 test_lazy_prereq UTF8_NFD_TO_NFC '
1434         # check whether FS converts nfd unicode to nfc
1435         auml=$(printf "\303\244")
1436         aumlcdiar=$(printf "\141\314\210")
1437         >"$auml" &&
1438         test -f "$aumlcdiar"
1439 '
1440
1441 test_lazy_prereq AUTOIDENT '
1442         sane_unset GIT_AUTHOR_NAME &&
1443         sane_unset GIT_AUTHOR_EMAIL &&
1444         git var GIT_AUTHOR_IDENT
1445 '
1446
1447 test_lazy_prereq EXPENSIVE '
1448         test -n "$GIT_TEST_LONG"
1449 '
1450
1451 test_lazy_prereq EXPENSIVE_ON_WINDOWS '
1452         test_have_prereq EXPENSIVE || test_have_prereq !MINGW,!CYGWIN
1453 '
1454
1455 test_lazy_prereq USR_BIN_TIME '
1456         test -x /usr/bin/time
1457 '
1458
1459 test_lazy_prereq NOT_ROOT '
1460         uid=$(id -u) &&
1461         test "$uid" != 0
1462 '
1463
1464 test_lazy_prereq JGIT '
1465         type jgit
1466 '
1467
1468 # SANITY is about "can you correctly predict what the filesystem would
1469 # do by only looking at the permission bits of the files and
1470 # directories?"  A typical example of !SANITY is running the test
1471 # suite as root, where a test may expect "chmod -r file && cat file"
1472 # to fail because file is supposed to be unreadable after a successful
1473 # chmod.  In an environment (i.e. combination of what filesystem is
1474 # being used and who is running the tests) that lacks SANITY, you may
1475 # be able to delete or create a file when the containing directory
1476 # doesn't have write permissions, or access a file even if the
1477 # containing directory doesn't have read or execute permissions.
1478
1479 test_lazy_prereq SANITY '
1480         mkdir SANETESTD.1 SANETESTD.2 &&
1481
1482         chmod +w SANETESTD.1 SANETESTD.2 &&
1483         >SANETESTD.1/x 2>SANETESTD.2/x &&
1484         chmod -w SANETESTD.1 &&
1485         chmod -r SANETESTD.1/x &&
1486         chmod -rx SANETESTD.2 ||
1487         BUG "cannot prepare SANETESTD"
1488
1489         ! test -r SANETESTD.1/x &&
1490         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1491         status=$?
1492
1493         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1494         rm -rf SANETESTD.1 SANETESTD.2 ||
1495         BUG "cannot clean SANETESTD"
1496         return $status
1497 '
1498
1499 test FreeBSD != $uname_s || GIT_UNZIP=${GIT_UNZIP:-/usr/local/bin/unzip}
1500 GIT_UNZIP=${GIT_UNZIP:-unzip}
1501 test_lazy_prereq UNZIP '
1502         "$GIT_UNZIP" -v
1503         test $? -ne 127
1504 '
1505
1506 run_with_limited_cmdline () {
1507         (ulimit -s 128 && "$@")
1508 }
1509
1510 test_lazy_prereq CMDLINE_LIMIT '
1511         test_have_prereq !MINGW,!CYGWIN &&
1512         run_with_limited_cmdline true
1513 '
1514
1515 run_with_limited_stack () {
1516         (ulimit -s 128 && "$@")
1517 }
1518
1519 test_lazy_prereq ULIMIT_STACK_SIZE '
1520         test_have_prereq !MINGW,!CYGWIN &&
1521         run_with_limited_stack true
1522 '
1523
1524 build_option () {
1525         git version --build-options |
1526         sed -ne "s/^$1: //p"
1527 }
1528
1529 test_lazy_prereq LONG_IS_64BIT '
1530         test 8 -le "$(build_option sizeof-long)"
1531 '
1532
1533 test_lazy_prereq TIME_IS_64BIT 'test-tool date is64bit'
1534 test_lazy_prereq TIME_T_IS_64BIT 'test-tool date time_t-is64bit'
1535
1536 test_lazy_prereq CURL '
1537         curl --version
1538 '
1539
1540 # SHA1 is a test if the hash algorithm in use is SHA-1.  This is both for tests
1541 # which will not work with other hash algorithms and tests that work but don't
1542 # test anything meaningful (e.g. special values which cause short collisions).
1543 test_lazy_prereq SHA1 '
1544         test $(git hash-object /dev/null) = e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
1545 '
1546
1547 test_lazy_prereq REBASE_P '
1548         test -z "$GIT_TEST_SKIP_REBASE_P"
1549 '