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 : ${ASAN_OPTIONS=detect_leaks=0:abort_on_error=1}
  45 export ASAN_OPTIONS
  46
  47 ################################################################
  48 # It appears that people try to run tests without building...
  49 "$GIT_BUILD_DIR/git" >/dev/null
  50 if test $? != 1
  51 then
  52         echo >&2 'error: you do not seem to have built git yet.'
  53         exit 1
  54 fi
  55
  56 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  57 export PERL_PATH SHELL_PATH
  58
  59 # if --tee was passed, write the output not only to the terminal, but
  60 # additionally to the file test-results/$BASENAME.out, too.
  61 case "$GIT_TEST_TEE_STARTED, $* " in
  62 done,*)
  63         # do not redirect again
  64         ;;
  65 *' --tee '*|*' --va'*|*' --verbose-log '*)
  66         mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
  67         BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
  68
  69         # Make this filename available to the sub-process in case it is using
  70         # --verbose-log.
  71         GIT_TEST_TEE_OUTPUT_FILE=$BASE.out
  72         export GIT_TEST_TEE_OUTPUT_FILE
  73
  74         # Truncate before calling "tee -a" to get rid of the results
  75         # from any previous runs.
  76         >"$GIT_TEST_TEE_OUTPUT_FILE"
  77
  78         (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  79          echo $? >"$BASE.exit") | tee -a "$GIT_TEST_TEE_OUTPUT_FILE"
  80         test "$(cat "$BASE.exit")" = 0
  81         exit
  82         ;;
  83 esac
  84
  85 # For repeatability, reset the environment to known value.
  86 # TERM is sanitized below, after saving color control sequences.
  87 LANG=C
  88 LC_ALL=C
  89 PAGER=cat
  90 TZ=UTC
  91 export LANG LC_ALL PAGER TZ
  92 EDITOR=:
  93 # A call to "unset" with no arguments causes at least Solaris 10
  94 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
  95 # deriving from the command substitution clustered with the other
  96 # ones.
  97 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  98         my @env = keys %ENV;
  99         my $ok = join("|", qw(
 100                 TRACE
 101                 DEBUG
 102                 TEST
 103                 .*_TEST
 104                 PROVE
 105                 VALGRIND
 106                 UNZIP
 107                 PERF_
 108                 CURL_VERBOSE
 109                 TRACE_CURL
 110         ));
 111         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 112         print join("\n", @vars);
 113 ')
 114 unset XDG_CONFIG_HOME
 115 unset GITPERLLIB
 116 GIT_AUTHOR_EMAIL=author@example.com
 117 GIT_AUTHOR_NAME='A U Thor'
 118 GIT_COMMITTER_EMAIL=committer@example.com
 119 GIT_COMMITTER_NAME='C O Mitter'
 120 GIT_MERGE_VERBOSITY=5
 121 GIT_MERGE_AUTOEDIT=no
 122 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 123 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 124 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 125 export EDITOR
 126
 127 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 128 GIT_TRACE_BARE=1
 129 export GIT_TRACE_BARE
 130
 131 if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 132 then
 133         GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 134         export GIT_INDEX_VERSION
 135 fi
 136
 137 # Add libc MALLOC and MALLOC_PERTURB test
 138 # only if we are not executing the test with valgrind
 139 if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 140    test -n "$TEST_NO_MALLOC_CHECK"
 141 then
 142         setup_malloc_check () {
 143                 : nothing
 144         }
 145         teardown_malloc_check () {
 146                 : nothing
 147         }
 148 else
 149         setup_malloc_check () {
 150                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 151                 export MALLOC_CHECK_ MALLOC_PERTURB_
 152         }
 153         teardown_malloc_check () {
 154                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 155         }
 156 fi
 157
 158 # Protect ourselves from common misconfiguration to export
 159 # CDPATH into the environment
 160 unset CDPATH
 161
 162 unset GREP_OPTIONS
 163 unset UNZIP
 164
 165 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 166 1|2|true)
 167         GIT_TRACE=4
 168         ;;
 169 esac
 170
 171 # Convenience
 172 #
 173 # A regexp to match 5 and 40 hexdigits
 174 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 175 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 176
 177 # Zero SHA-1
 178 _z40=0000000000000000000000000000000000000000
 179
 180 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
 181 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
 182
 183 # Line feed
 184 LF='
 185 '
 186
 187 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 188 # when case-folding filenames
 189 u200c=$(printf '\342\200\214')
 190
 191 export _x05 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
 192
 193 # Each test should start with something like this, after copyright notices:
 194 #
 195 # test_description='Description of this test...
 196 # This test checks if command xyzzy does the right thing...
 197 # '
 198 # . ./test-lib.sh
 199 test "x$TERM" != "xdumb" && (
 200                 test -t 1 &&
 201                 tput bold >/dev/null 2>&1 &&
 202                 tput setaf 1 >/dev/null 2>&1 &&
 203                 tput sgr0 >/dev/null 2>&1
 204         ) &&
 205         color=t
 206
 207 while test "$#" -ne 0
 208 do
 209         case "$1" in
 210         -d|--d|--de|--deb|--debu|--debug)
 211                 debug=t; shift ;;
 212         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 213                 immediate=t; shift ;;
 214         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 215                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 216         -r)
 217                 shift; test "$#" -ne 0 || {
 218                         echo 'error: -r requires an argument' >&2;
 219                         exit 1;
 220                 }
 221                 run_list=$1; shift ;;
 222         --run=*)
 223                 run_list=${1#--*=}; shift ;;
 224         -h|--h|--he|--hel|--help)
 225                 help=t; shift ;;
 226         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 227                 verbose=t; shift ;;
 228         --verbose-only=*)
 229                 verbose_only=${1#--*=}
 230                 shift ;;
 231         -q|--q|--qu|--qui|--quie|--quiet)
 232                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 233                 # passed without the ok/not ok details is always an error.
 234                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 235         --with-dashes)
 236                 with_dashes=t; shift ;;
 237         --no-color)
 238                 color=; shift ;;
 239         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 240                 valgrind=memcheck
 241                 shift ;;
 242         --valgrind=*)
 243                 valgrind=${1#--*=}
 244                 shift ;;
 245         --valgrind-only=*)
 246                 valgrind_only=${1#--*=}
 247                 shift ;;
 248         --tee)
 249                 shift ;; # was handled already
 250         --root=*)
 251                 root=${1#--*=}
 252                 shift ;;
 253         --chain-lint)
 254                 GIT_TEST_CHAIN_LINT=1
 255                 shift ;;
 256         --no-chain-lint)
 257                 GIT_TEST_CHAIN_LINT=0
 258                 shift ;;
 259         -x)
 260                 trace=t
 261                 verbose=t
 262                 shift ;;
 263         --verbose-log)
 264                 verbose_log=t
 265                 shift ;;
 266         *)
 267                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 268         esac
 269 done
 270
 271 if test -n "$valgrind_only"
 272 then
 273         test -z "$valgrind" && valgrind=memcheck
 274         test -z "$verbose" && verbose_only="$valgrind_only"
 275 elif test -n "$valgrind"
 276 then
 277         verbose=t
 278 fi
 279
 280 if test -n "$color"
 281 then
 282         # Save the color control sequences now rather than run tput
 283         # each time say_color() is called.  This is done for two
 284         # reasons:
 285         #   * TERM will be changed to dumb
 286         #   * HOME will be changed to a temporary directory and tput
 287         #     might need to read ~/.terminfo from the original HOME
 288         #     directory to get the control sequences
 289         # Note:  This approach assumes the control sequences don't end
 290         # in a newline for any terminal of interest (command
 291         # substitutions strip trailing newlines).  Given that most
 292         # (all?) terminals in common use are related to ECMA-48, this
 293         # shouldn't be a problem.
 294         say_color_error=$(tput bold; tput setaf 1) # bold red
 295         say_color_skip=$(tput setaf 4) # blue
 296         say_color_warn=$(tput setaf 3) # brown/yellow
 297         say_color_pass=$(tput setaf 2) # green
 298         say_color_info=$(tput setaf 6) # cyan
 299         say_color_reset=$(tput sgr0)
 300         say_color_="" # no formatting for normal text
 301         say_color () {
 302                 test -z "$1" && test -n "$quiet" && return
 303                 eval "say_color_color=\$say_color_$1"
 304                 shift
 305                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 306         }
 307 else
 308         say_color() {
 309                 test -z "$1" && test -n "$quiet" && return
 310                 shift
 311                 printf "%s\n" "$*"
 312         }
 313 fi
 314
 315 TERM=dumb
 316 export TERM
 317
 318 error () {
 319         say_color error "error: $*"
 320         GIT_EXIT_OK=t
 321         exit 1
 322 }
 323
 324 say () {
 325         say_color info "$*"
 326 }
 327
 328 if test -n "$HARNESS_ACTIVE"
 329 then
 330         if test "$verbose" = t || test -n "$verbose_only"
 331         then
 332                 printf 'Bail out! %s\n' \
 333                  'verbose mode forbidden under TAP harness; try --verbose-log'
 334                 exit 1
 335         fi
 336 fi
 337
 338 test "${test_description}" != "" ||
 339 error "Test script did not set test_description."
 340
 341 if test "$help" = "t"
 342 then
 343         printf '%s\n' "$test_description"
 344         exit 0
 345 fi
 346
 347 exec 5>&1
 348 exec 6<&0
 349 exec 7>&2
 350 if test "$verbose_log" = "t"
 351 then
 352         exec 3>>"$GIT_TEST_TEE_OUTPUT_FILE" 4>&3
 353 elif test "$verbose" = "t"
 354 then
 355         exec 4>&2 3>&1
 356 else
 357         exec 4>/dev/null 3>/dev/null
 358 fi
 359
 360 # Send any "-x" output directly to stderr to avoid polluting tests
 361 # which capture stderr. We can do this unconditionally since it
 362 # has no effect if tracing isn't turned on.
 363 #
 364 # Note that this sets up the trace fd as soon as we assign the variable, so it
 365 # must come after the creation of descriptor 4 above. Likewise, we must never
 366 # unset this, as it has the side effect of closing descriptor 4, which we
 367 # use to show verbose tests to the user.
 368 #
 369 # Note also that we don't need or want to export it. The tracing is local to
 370 # this shell, and we would not want to influence any shells we exec.
 371 BASH_XTRACEFD=4
 372
 373 test_failure=0
 374 test_count=0
 375 test_fixed=0
 376 test_broken=0
 377 test_success=0
 378
 379 test_external_has_tap=0
 380
 381 die () {
 382         code=$?
 383         if test -n "$GIT_EXIT_OK"
 384         then
 385                 exit $code
 386         else
 387                 echo >&5 "FATAL: Unexpected exit with code $code"
 388                 exit 1
 389         fi
 390 }
 391
 392 GIT_EXIT_OK=
 393 trap 'die' EXIT
 394 trap 'exit $?' INT
 395
 396 # The user-facing functions are loaded from a separate file so that
 397 # test_perf subshells can have them too
 398 . "$TEST_DIRECTORY/test-lib-functions.sh"
 399
 400 # You are not expected to call test_ok_ and test_failure_ directly, use
 401 # the test_expect_* functions instead.
 402
 403 test_ok_ () {
 404         test_success=$(($test_success + 1))
 405         say_color "" "ok $test_count - $@"
 406 }
 407
 408 test_failure_ () {
 409         test_failure=$(($test_failure + 1))
 410         say_color error "not ok $test_count - $1"
 411         shift
 412         printf '%s\n' "$*" | sed -e 's/^/#      /'
 413         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 414 }
 415
 416 test_known_broken_ok_ () {
 417         test_fixed=$(($test_fixed+1))
 418         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 419 }
 420
 421 test_known_broken_failure_ () {
 422         test_broken=$(($test_broken+1))
 423         say_color warn "not ok $test_count - $@ # TODO known breakage"
 424 }
 425
 426 test_debug () {
 427         test "$debug" = "" || eval "$1"
 428 }
 429
 430 match_pattern_list () {
 431         arg="$1"
 432         shift
 433         test -z "$*" && return 1
 434         for pattern_
 435         do
 436                 case "$arg" in
 437                 $pattern_)
 438                         return 0
 439                 esac
 440         done
 441         return 1
 442 }
 443
 444 match_test_selector_list () {
 445         title="$1"
 446         shift
 447         arg="$1"
 448         shift
 449         test -z "$1" && return 0
 450
 451         # Both commas and whitespace are accepted as separators.
 452         OLDIFS=$IFS
 453         IFS='   ,'
 454         set -- $1
 455         IFS=$OLDIFS
 456
 457         # If the first selector is negative we include by default.
 458         include=
 459         case "$1" in
 460                 !*) include=t ;;
 461         esac
 462
 463         for selector
 464         do
 465                 orig_selector=$selector
 466
 467                 positive=t
 468                 case "$selector" in
 469                         !*)
 470                                 positive=
 471                                 selector=${selector##?}
 472                                 ;;
 473                 esac
 474
 475                 test -z "$selector" && continue
 476
 477                 case "$selector" in
 478                         *-*)
 479                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 480                                 then
 481                                         echo "error: $title: invalid non-numeric in range" \
 482                                                 "start: '$orig_selector'" >&2
 483                                         exit 1
 484                                 fi
 485                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 486                                 then
 487                                         echo "error: $title: invalid non-numeric in range" \
 488                                                 "end: '$orig_selector'" >&2
 489                                         exit 1
 490                                 fi
 491                                 ;;
 492                         *)
 493                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 494                                 then
 495                                         echo "error: $title: invalid non-numeric in test" \
 496                                                 "selector: '$orig_selector'" >&2
 497                                         exit 1
 498                                 fi
 499                 esac
 500
 501                 # Short cut for "obvious" cases
 502                 test -z "$include" && test -z "$positive" && continue
 503                 test -n "$include" && test -n "$positive" && continue
 504
 505                 case "$selector" in
 506                         -*)
 507                                 if test $arg -le ${selector#-}
 508                                 then
 509                                         include=$positive
 510                                 fi
 511                                 ;;
 512                         *-)
 513                                 if test $arg -ge ${selector%-}
 514                                 then
 515                                         include=$positive
 516                                 fi
 517                                 ;;
 518                         *-*)
 519                                 if test ${selector%%-*} -le $arg \
 520                                         && test $arg -le ${selector#*-}
 521                                 then
 522                                         include=$positive
 523                                 fi
 524                                 ;;
 525                         *)
 526                                 if test $arg -eq $selector
 527                                 then
 528                                         include=$positive
 529                                 fi
 530                                 ;;
 531                 esac
 532         done
 533
 534         test -n "$include"
 535 }
 536
 537 maybe_teardown_verbose () {
 538         test -z "$verbose_only" && return
 539         exec 4>/dev/null 3>/dev/null
 540         verbose=
 541 }
 542
 543 last_verbose=t
 544 maybe_setup_verbose () {
 545         test -z "$verbose_only" && return
 546         if match_pattern_list $test_count $verbose_only
 547         then
 548                 exec 4>&2 3>&1
 549                 # Emit a delimiting blank line when going from
 550                 # non-verbose to verbose.  Within verbose mode the
 551                 # delimiter is printed by test_expect_*.  The choice
 552                 # of the initial $last_verbose is such that before
 553                 # test 1, we do not print it.
 554                 test -z "$last_verbose" && echo >&3 ""
 555                 verbose=t
 556         else
 557                 exec 4>/dev/null 3>/dev/null
 558                 verbose=
 559         fi
 560         last_verbose=$verbose
 561 }
 562
 563 maybe_teardown_valgrind () {
 564         test -z "$GIT_VALGRIND" && return
 565         GIT_VALGRIND_ENABLED=
 566 }
 567
 568 maybe_setup_valgrind () {
 569         test -z "$GIT_VALGRIND" && return
 570         if test -z "$valgrind_only"
 571         then
 572                 GIT_VALGRIND_ENABLED=t
 573                 return
 574         fi
 575         GIT_VALGRIND_ENABLED=
 576         if match_pattern_list $test_count $valgrind_only
 577         then
 578                 GIT_VALGRIND_ENABLED=t
 579         fi
 580 }
 581
 582 want_trace () {
 583         test "$trace" = t && test "$verbose" = t
 584 }
 585
 586 # This is a separate function because some tests use
 587 # "return" to end a test_expect_success block early
 588 # (and we want to make sure we run any cleanup like
 589 # "set +x").
 590 test_eval_inner_ () {
 591         # Do not add anything extra (including LF) after '$*'
 592         eval "
 593                 want_trace && set -x
 594                 $*"
 595 }
 596
 597 test_eval_ () {
 598         # We run this block with stderr redirected to avoid extra cruft
 599         # during a "-x" trace. Once in "set -x" mode, we cannot prevent
 600         # the shell from printing the "set +x" to turn it off (nor the saving
 601         # of $? before that). But we can make sure that the output goes to
 602         # /dev/null.
 603         #
 604         # The test itself is run with stderr put back to &4 (so either to
 605         # /dev/null, or to the original stderr if --verbose was used).
 606         {
 607                 test_eval_inner_ "$@" </dev/null >&3 2>&4
 608                 test_eval_ret_=$?
 609                 if want_trace
 610                 then
 611                         set +x
 612                         if test "$test_eval_ret_" != 0
 613                         then
 614                                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 615                         fi
 616                 fi
 617         } 2>/dev/null
 618         return $test_eval_ret_
 619 }
 620
 621 test_run_ () {
 622         test_cleanup=:
 623         expecting_failure=$2
 624
 625         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 626                 # turn off tracing for this test-eval, as it simply creates
 627                 # confusing noise in the "-x" output
 628                 trace_tmp=$trace
 629                 trace=
 630                 # 117 is magic because it is unlikely to match the exit
 631                 # code of other programs
 632                 if test "OK-117" != "$(test_eval_ "(exit 117) && $1${LF}${LF}echo OK-\$?" 3>&1)"
 633                 then
 634                         error "bug in the test script: broken &&-chain or run-away HERE-DOC: $1"
 635                 fi
 636                 trace=$trace_tmp
 637         fi
 638
 639         setup_malloc_check
 640         test_eval_ "$1"
 641         eval_ret=$?
 642         teardown_malloc_check
 643
 644         if test -z "$immediate" || test $eval_ret = 0 ||
 645            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 646         then
 647                 setup_malloc_check
 648                 test_eval_ "$test_cleanup"
 649                 teardown_malloc_check
 650         fi
 651         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 652         then
 653                 echo ""
 654         fi
 655         return "$eval_ret"
 656 }
 657
 658 test_start_ () {
 659         test_count=$(($test_count+1))
 660         maybe_setup_verbose
 661         maybe_setup_valgrind
 662 }
 663
 664 test_finish_ () {
 665         echo >&3 ""
 666         maybe_teardown_valgrind
 667         maybe_teardown_verbose
 668 }
 669
 670 test_skip () {
 671         to_skip=
 672         skipped_reason=
 673         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 674         then
 675                 to_skip=t
 676                 skipped_reason="GIT_SKIP_TESTS"
 677         fi
 678         if test -z "$to_skip" && test -n "$test_prereq" &&
 679            ! test_have_prereq "$test_prereq"
 680         then
 681                 to_skip=t
 682
 683                 of_prereq=
 684                 if test "$missing_prereq" != "$test_prereq"
 685                 then
 686                         of_prereq=" of $test_prereq"
 687                 fi
 688                 skipped_reason="missing $missing_prereq${of_prereq}"
 689         fi
 690         if test -z "$to_skip" && test -n "$run_list" &&
 691                 ! match_test_selector_list '--run' $test_count "$run_list"
 692         then
 693                 to_skip=t
 694                 skipped_reason="--run"
 695         fi
 696
 697         case "$to_skip" in
 698         t)
 699                 say_color skip >&3 "skipping test: $@"
 700                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 701                 : true
 702                 ;;
 703         *)
 704                 false
 705                 ;;
 706         esac
 707 }
 708
 709 # stub; perf-lib overrides it
 710 test_at_end_hook_ () {
 711         :
 712 }
 713
 714 test_done () {
 715         GIT_EXIT_OK=t
 716
 717         if test -z "$HARNESS_ACTIVE"
 718         then
 719                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 720                 mkdir -p "$test_results_dir"
 721                 base=${0##*/}
 722                 test_results_path="$test_results_dir/${base%.sh}.counts"
 723
 724                 cat >"$test_results_path" <<-EOF
 725                 total $test_count
 726                 success $test_success
 727                 fixed $test_fixed
 728                 broken $test_broken
 729                 failed $test_failure
 730
 731                 EOF
 732         fi
 733
 734         if test "$test_fixed" != 0
 735         then
 736                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 737         fi
 738         if test "$test_broken" != 0
 739         then
 740                 say_color warn "# still have $test_broken known breakage(s)"
 741         fi
 742         if test "$test_broken" != 0 || test "$test_fixed" != 0
 743         then
 744                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 745                 msg="remaining $test_remaining test(s)"
 746         else
 747                 test_remaining=$test_count
 748                 msg="$test_count test(s)"
 749         fi
 750         case "$test_failure" in
 751         0)
 752                 if test $test_external_has_tap -eq 0
 753                 then
 754                         if test $test_remaining -gt 0
 755                         then
 756                                 say_color pass "# passed all $msg"
 757                         fi
 758
 759                         # Maybe print SKIP message
 760                         test -z "$skip_all" || skip_all="# SKIP $skip_all"
 761                         case "$test_count" in
 762                         0)
 763                                 say "1..$test_count${skip_all:+ $skip_all}"
 764                                 ;;
 765                         *)
 766                                 test -z "$skip_all" ||
 767                                 say_color warn "$skip_all"
 768                                 say "1..$test_count"
 769                                 ;;
 770                         esac
 771                 fi
 772
 773                 if test -z "$debug"
 774                 then
 775                         test -d "$TRASH_DIRECTORY" ||
 776                         error "Tests passed but trash directory already removed before test cleanup; aborting"
 777
 778                         cd "$TRASH_DIRECTORY/.." &&
 779                         rm -fr "$TRASH_DIRECTORY" ||
 780                         error "Tests passed but test cleanup failed; aborting"
 781                 fi
 782                 test_at_end_hook_
 783
 784                 exit 0 ;;
 785
 786         *)
 787                 if test $test_external_has_tap -eq 0
 788                 then
 789                         say_color error "# failed $test_failure among $msg"
 790                         say "1..$test_count"
 791                 fi
 792
 793                 exit 1 ;;
 794
 795         esac
 796 }
 797
 798 if test -n "$valgrind"
 799 then
 800         make_symlink () {
 801                 test -h "$2" &&
 802                 test "$1" = "$(readlink "$2")" || {
 803                         # be super paranoid
 804                         if mkdir "$2".lock
 805                         then
 806                                 rm -f "$2" &&
 807                                 ln -s "$1" "$2" &&
 808                                 rm -r "$2".lock
 809                         else
 810                                 while test -d "$2".lock
 811                                 do
 812                                         say "Waiting for lock on $2."
 813                                         sleep 1
 814                                 done
 815                         fi
 816                 }
 817         }
 818
 819         make_valgrind_symlink () {
 820                 # handle only executables, unless they are shell libraries that
 821                 # need to be in the exec-path.
 822                 test -x "$1" ||
 823                 test "# " = "$(head -c 2 <"$1")" ||
 824                 return;
 825
 826                 base=$(basename "$1")
 827                 case "$base" in
 828                 test-*)
 829                         symlink_target="$GIT_BUILD_DIR/t/helper/$base"
 830                         ;;
 831                 *)
 832                         symlink_target="$GIT_BUILD_DIR/$base"
 833                         ;;
 834                 esac
 835                 # do not override scripts
 836                 if test -x "$symlink_target" &&
 837                     test ! -d "$symlink_target" &&
 838                     test "#!" != "$(head -c 2 < "$symlink_target")"
 839                 then
 840                         symlink_target=../valgrind.sh
 841                 fi
 842                 case "$base" in
 843                 *.sh|*.perl)
 844                         symlink_target=../unprocessed-script
 845                 esac
 846                 # create the link, or replace it if it is out of date
 847                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 848         }
 849
 850         # override all git executables in TEST_DIRECTORY/..
 851         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 852         mkdir -p "$GIT_VALGRIND"/bin
 853         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
 854         do
 855                 make_valgrind_symlink $file
 856         done
 857         # special-case the mergetools loadables
 858         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 859         OLDIFS=$IFS
 860         IFS=:
 861         for path in $PATH
 862         do
 863                 ls "$path"/git-* 2> /dev/null |
 864                 while read file
 865                 do
 866                         make_valgrind_symlink "$file"
 867                 done
 868         done
 869         IFS=$OLDIFS
 870         PATH=$GIT_VALGRIND/bin:$PATH
 871         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 872         export GIT_VALGRIND
 873         GIT_VALGRIND_MODE="$valgrind"
 874         export GIT_VALGRIND_MODE
 875         GIT_VALGRIND_ENABLED=t
 876         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 877         export GIT_VALGRIND_ENABLED
 878 elif test -n "$GIT_TEST_INSTALLED"
 879 then
 880         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 881         error "Cannot run git from $GIT_TEST_INSTALLED."
 882         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 883         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 884 else # normal case, use ../bin-wrappers only unless $with_dashes:
 885         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 886         if ! test -x "$git_bin_dir/git"
 887         then
 888                 if test -z "$with_dashes"
 889                 then
 890                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 891                 fi
 892                 with_dashes=t
 893         fi
 894         PATH="$git_bin_dir:$PATH"
 895         GIT_EXEC_PATH=$GIT_BUILD_DIR
 896         if test -n "$with_dashes"
 897         then
 898                 PATH="$GIT_BUILD_DIR:$PATH"
 899         fi
 900 fi
 901 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 902 GIT_CONFIG_NOSYSTEM=1
 903 GIT_ATTR_NOSYSTEM=1
 904 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 905
 906 if test -z "$GIT_TEST_CMP"
 907 then
 908         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 909         then
 910                 GIT_TEST_CMP="$DIFF -c"
 911         else
 912                 GIT_TEST_CMP="$DIFF -u"
 913         fi
 914 fi
 915
 916 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 917 export GITPERLLIB
 918 test -d "$GIT_BUILD_DIR"/templates/blt || {
 919         error "You haven't built things yet, have you?"
 920 }
 921
 922 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-chmtime
 923 then
 924         echo >&2 'You need to build test-chmtime:'
 925         echo >&2 'Run "make t/helper/test-chmtime" in the source (toplevel) directory'
 926         exit 1
 927 fi
 928
 929 # Test repository
 930 TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 931 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 932 case "$TRASH_DIRECTORY" in
 933 /*) ;; # absolute path is good
 934  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 935 esac
 936 rm -fr "$TRASH_DIRECTORY" || {
 937         GIT_EXIT_OK=t
 938         echo >&5 "FATAL: Cannot prepare test area"
 939         exit 1
 940 }
 941
 942 HOME="$TRASH_DIRECTORY"
 943 GNUPGHOME="$HOME/gnupg-home-not-used"
 944 export HOME GNUPGHOME
 945
 946 if test -z "$TEST_NO_CREATE_REPO"
 947 then
 948         test_create_repo "$TRASH_DIRECTORY"
 949 else
 950         mkdir -p "$TRASH_DIRECTORY"
 951 fi
 952 # Use -P to resolve symlinks in our working directory so that the cwd
 953 # in subprocesses like git equals our $PWD (for pathname comparisons).
 954 cd -P "$TRASH_DIRECTORY" || exit 1
 955
 956 this_test=${0##*/}
 957 this_test=${this_test%%-*}
 958 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 959 then
 960         say_color info >&3 "skipping test $this_test altogether"
 961         skip_all="skip all tests in $this_test"
 962         test_done
 963 fi
 964
 965 # Provide an implementation of the 'yes' utility
 966 yes () {
 967         if test $# = 0
 968         then
 969                 y=y
 970         else
 971                 y="$*"
 972         fi
 973
 974         i=0
 975         while test $i -lt 99
 976         do
 977                 echo "$y"
 978                 i=$(($i+1))
 979         done
 980 }
 981
 982 # Fix some commands on Windows
 983 uname_s=$(uname -s)
 984 case $uname_s in
 985 *MINGW*)
 986         # Windows has its own (incompatible) sort and find
 987         sort () {
 988                 /usr/bin/sort "$@"
 989         }
 990         find () {
 991                 /usr/bin/find "$@"
 992         }
 993         # git sees Windows-style pwd
 994         pwd () {
 995                 builtin pwd -W
 996         }
 997         # no POSIX permissions
 998         # backslashes in pathspec are converted to '/'
 999         # exec does not inherit the PID
1000         test_set_prereq MINGW
1001         test_set_prereq NATIVE_CRLF
1002         test_set_prereq SED_STRIPS_CR
1003         test_set_prereq GREP_STRIPS_CR
1004         GIT_TEST_CMP=mingw_test_cmp
1005         ;;
1006 *CYGWIN*)
1007         test_set_prereq POSIXPERM
1008         test_set_prereq EXECKEEPSPID
1009         test_set_prereq CYGWIN
1010         test_set_prereq SED_STRIPS_CR
1011         test_set_prereq GREP_STRIPS_CR
1012         ;;
1013 *)
1014         test_set_prereq POSIXPERM
1015         test_set_prereq BSLASHPSPEC
1016         test_set_prereq EXECKEEPSPID
1017         ;;
1018 esac
1019
1020 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1021 test -z "$NO_PERL" && test_set_prereq PERL
1022 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
1023 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1024 test -n "$USE_LIBPCRE1$USE_LIBPCRE2" && test_set_prereq PCRE
1025 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1026
1027 # Can we rely on git's output in the C locale?
1028 if test -n "$GETTEXT_POISON"
1029 then
1030         GIT_GETTEXT_POISON=YesPlease
1031         export GIT_GETTEXT_POISON
1032         test_set_prereq GETTEXT_POISON
1033 else
1034         test_set_prereq C_LOCALE_OUTPUT
1035 fi
1036
1037 # Use this instead of test_cmp to compare files that contain expected and
1038 # actual output from git commands that can be translated.  When running
1039 # under GETTEXT_POISON this pretends that the command produced expected
1040 # results.
1041 test_i18ncmp () {
1042         test -n "$GETTEXT_POISON" || test_cmp "$@"
1043 }
1044
1045 # Use this instead of "grep expected-string actual" to see if the
1046 # output from a git command that can be translated either contains an
1047 # expected string, or does not contain an unwanted one.  When running
1048 # under GETTEXT_POISON this pretends that the command produced expected
1049 # results.
1050 test_i18ngrep () {
1051         if test -n "$GETTEXT_POISON"
1052         then
1053             : # pretend success
1054         elif test "x!" = "x$1"
1055         then
1056                 shift
1057                 ! grep "$@"
1058         else
1059                 grep "$@"
1060         fi
1061 }
1062
1063 test_lazy_prereq PIPE '
1064         # test whether the filesystem supports FIFOs
1065         case $(uname -s) in
1066         CYGWIN*|MINGW*)
1067                 false
1068                 ;;
1069         *)
1070                 rm -f testfifo && mkfifo testfifo
1071                 ;;
1072         esac
1073 '
1074
1075 test_lazy_prereq SYMLINKS '
1076         # test whether the filesystem supports symbolic links
1077         ln -s x y && test -h y
1078 '
1079
1080 test_lazy_prereq FILEMODE '
1081         test "$(git config --bool core.filemode)" = true
1082 '
1083
1084 test_lazy_prereq CASE_INSENSITIVE_FS '
1085         echo good >CamelCase &&
1086         echo bad >camelcase &&
1087         test "$(cat CamelCase)" != good
1088 '
1089
1090 test_lazy_prereq UTF8_NFD_TO_NFC '
1091         # check whether FS converts nfd unicode to nfc
1092         auml=$(printf "\303\244")
1093         aumlcdiar=$(printf "\141\314\210")
1094         >"$auml" &&
1095         case "$(echo *)" in
1096         "$aumlcdiar")
1097                 true ;;
1098         *)
1099                 false ;;
1100         esac
1101 '
1102
1103 test_lazy_prereq AUTOIDENT '
1104         sane_unset GIT_AUTHOR_NAME &&
1105         sane_unset GIT_AUTHOR_EMAIL &&
1106         git var GIT_AUTHOR_IDENT
1107 '
1108
1109 test_lazy_prereq EXPENSIVE '
1110         test -n "$GIT_TEST_LONG"
1111 '
1112
1113 test_lazy_prereq USR_BIN_TIME '
1114         test -x /usr/bin/time
1115 '
1116
1117 test_lazy_prereq NOT_ROOT '
1118         uid=$(id -u) &&
1119         test "$uid" != 0
1120 '
1121
1122 test_lazy_prereq JGIT '
1123         type jgit
1124 '
1125
1126 # SANITY is about "can you correctly predict what the filesystem would
1127 # do by only looking at the permission bits of the files and
1128 # directories?"  A typical example of !SANITY is running the test
1129 # suite as root, where a test may expect "chmod -r file && cat file"
1130 # to fail because file is supposed to be unreadable after a successful
1131 # chmod.  In an environment (i.e. combination of what filesystem is
1132 # being used and who is running the tests) that lacks SANITY, you may
1133 # be able to delete or create a file when the containing directory
1134 # doesn't have write permissions, or access a file even if the
1135 # containing directory doesn't have read or execute permissions.
1136
1137 test_lazy_prereq SANITY '
1138         mkdir SANETESTD.1 SANETESTD.2 &&
1139
1140         chmod +w SANETESTD.1 SANETESTD.2 &&
1141         >SANETESTD.1/x 2>SANETESTD.2/x &&
1142         chmod -w SANETESTD.1 &&
1143         chmod -r SANETESTD.1/x &&
1144         chmod -rx SANETESTD.2 ||
1145         error "bug in test sript: cannot prepare SANETESTD"
1146
1147         ! test -r SANETESTD.1/x &&
1148         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1149         status=$?
1150
1151         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1152         rm -rf SANETESTD.1 SANETESTD.2 ||
1153         error "bug in test sript: cannot clean SANETESTD"
1154         return $status
1155 '
1156
1157 test FreeBSD != $uname_s || GIT_UNZIP=${GIT_UNZIP:-/usr/local/bin/unzip}
1158 GIT_UNZIP=${GIT_UNZIP:-unzip}
1159 test_lazy_prereq UNZIP '
1160         "$GIT_UNZIP" -v
1161         test $? -ne 127
1162 '
1163
1164 run_with_limited_cmdline () {
1165         (ulimit -s 128 && "$@")
1166 }
1167
1168 test_lazy_prereq CMDLINE_LIMIT 'run_with_limited_cmdline true'
1169
1170 build_option () {
1171         git version --build-options |
1172         sed -ne "s/^$1: //p"
1173 }
1174
1175 test_lazy_prereq LONG_IS_64BIT '
1176         test 8 -le "$(build_option sizeof-long)"
1177 '
1178
1179 test_lazy_prereq TIME_IS_64BIT 'test-date is64bit'
1180 test_lazy_prereq TIME_T_IS_64BIT 'test-date time_t-is64bit'