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 : ${LSAN_OPTIONS=abort_on_error=1}
  50 export LSAN_OPTIONS
  51
  52 ################################################################
  53 # It appears that people try to run tests without building...
  54 "$GIT_BUILD_DIR/git" >/dev/null
  55 if test $? != 1
  56 then
  57         echo >&2 'error: you do not seem to have built git yet.'
  58         exit 1
  59 fi
  60
  61 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  62 export PERL_PATH SHELL_PATH
  63
  64 # if --tee was passed, write the output not only to the terminal, but
  65 # additionally to the file test-results/$BASENAME.out, too.
  66 case "$GIT_TEST_TEE_STARTED, $* " in
  67 done,*)
  68         # do not redirect again
  69         ;;
  70 *' --tee '*|*' --va'*|*' --verbose-log '*)
  71         mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
  72         BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
  73
  74         # Make this filename available to the sub-process in case it is using
  75         # --verbose-log.
  76         GIT_TEST_TEE_OUTPUT_FILE=$BASE.out
  77         export GIT_TEST_TEE_OUTPUT_FILE
  78
  79         # Truncate before calling "tee -a" to get rid of the results
  80         # from any previous runs.
  81         >"$GIT_TEST_TEE_OUTPUT_FILE"
  82
  83         (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  84          echo $? >"$BASE.exit") | tee -a "$GIT_TEST_TEE_OUTPUT_FILE"
  85         test "$(cat "$BASE.exit")" = 0
  86         exit
  87         ;;
  88 esac
  89
  90 # For repeatability, reset the environment to known value.
  91 # TERM is sanitized below, after saving color control sequences.
  92 LANG=C
  93 LC_ALL=C
  94 PAGER=cat
  95 TZ=UTC
  96 export LANG LC_ALL PAGER TZ
  97 EDITOR=:
  98 # A call to "unset" with no arguments causes at least Solaris 10
  99 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
 100 # deriving from the command substitution clustered with the other
 101 # ones.
 102 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
 103         my @env = keys %ENV;
 104         my $ok = join("|", qw(
 105                 TRACE
 106                 DEBUG
 107                 TEST
 108                 .*_TEST
 109                 PROVE
 110                 VALGRIND
 111                 UNZIP
 112                 PERF_
 113                 CURL_VERBOSE
 114                 TRACE_CURL
 115         ));
 116         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 117         print join("\n", @vars);
 118 ')
 119 unset XDG_CONFIG_HOME
 120 unset GITPERLLIB
 121 GIT_AUTHOR_EMAIL=author@example.com
 122 GIT_AUTHOR_NAME='A U Thor'
 123 GIT_COMMITTER_EMAIL=committer@example.com
 124 GIT_COMMITTER_NAME='C O Mitter'
 125 GIT_MERGE_VERBOSITY=5
 126 GIT_MERGE_AUTOEDIT=no
 127 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 128 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 129 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 130 export EDITOR
 131
 132 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 133 GIT_TRACE_BARE=1
 134 export GIT_TRACE_BARE
 135
 136 if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 137 then
 138         GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 139         export GIT_INDEX_VERSION
 140 fi
 141
 142 # Add libc MALLOC and MALLOC_PERTURB test
 143 # only if we are not executing the test with valgrind
 144 if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 145    test -n "$TEST_NO_MALLOC_CHECK"
 146 then
 147         setup_malloc_check () {
 148                 : nothing
 149         }
 150         teardown_malloc_check () {
 151                 : nothing
 152         }
 153 else
 154         setup_malloc_check () {
 155                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 156                 export MALLOC_CHECK_ MALLOC_PERTURB_
 157         }
 158         teardown_malloc_check () {
 159                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 160         }
 161 fi
 162
 163 # Protect ourselves from common misconfiguration to export
 164 # CDPATH into the environment
 165 unset CDPATH
 166
 167 unset GREP_OPTIONS
 168 unset UNZIP
 169
 170 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 171 1|2|true)
 172         GIT_TRACE=4
 173         ;;
 174 esac
 175
 176 # Convenience
 177 #
 178 # A regexp to match 5 and 40 hexdigits
 179 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 180 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 181
 182 # Zero SHA-1
 183 _z40=0000000000000000000000000000000000000000
 184
 185 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
 186 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
 187
 188 # Line feed
 189 LF='
 190 '
 191
 192 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 193 # when case-folding filenames
 194 u200c=$(printf '\342\200\214')
 195
 196 export _x05 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
 197
 198 # Each test should start with something like this, after copyright notices:
 199 #
 200 # test_description='Description of this test...
 201 # This test checks if command xyzzy does the right thing...
 202 # '
 203 # . ./test-lib.sh
 204 test "x$TERM" != "xdumb" && (
 205                 test -t 1 &&
 206                 tput bold >/dev/null 2>&1 &&
 207                 tput setaf 1 >/dev/null 2>&1 &&
 208                 tput sgr0 >/dev/null 2>&1
 209         ) &&
 210         color=t
 211
 212 while test "$#" -ne 0
 213 do
 214         case "$1" in
 215         -d|--d|--de|--deb|--debu|--debug)
 216                 debug=t; shift ;;
 217         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 218                 immediate=t; shift ;;
 219         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 220                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 221         -r)
 222                 shift; test "$#" -ne 0 || {
 223                         echo 'error: -r requires an argument' >&2;
 224                         exit 1;
 225                 }
 226                 run_list=$1; shift ;;
 227         --run=*)
 228                 run_list=${1#--*=}; shift ;;
 229         -h|--h|--he|--hel|--help)
 230                 help=t; shift ;;
 231         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 232                 verbose=t; shift ;;
 233         --verbose-only=*)
 234                 verbose_only=${1#--*=}
 235                 shift ;;
 236         -q|--q|--qu|--qui|--quie|--quiet)
 237                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 238                 # passed without the ok/not ok details is always an error.
 239                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 240         --with-dashes)
 241                 with_dashes=t; shift ;;
 242         --no-color)
 243                 color=; shift ;;
 244         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 245                 valgrind=memcheck
 246                 shift ;;
 247         --valgrind=*)
 248                 valgrind=${1#--*=}
 249                 shift ;;
 250         --valgrind-only=*)
 251                 valgrind_only=${1#--*=}
 252                 shift ;;
 253         --tee)
 254                 shift ;; # was handled already
 255         --root=*)
 256                 root=${1#--*=}
 257                 shift ;;
 258         --chain-lint)
 259                 GIT_TEST_CHAIN_LINT=1
 260                 shift ;;
 261         --no-chain-lint)
 262                 GIT_TEST_CHAIN_LINT=0
 263                 shift ;;
 264         -x)
 265                 trace=t
 266                 verbose=t
 267                 shift ;;
 268         --verbose-log)
 269                 verbose_log=t
 270                 shift ;;
 271         *)
 272                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 273         esac
 274 done
 275
 276 if test -n "$valgrind_only"
 277 then
 278         test -z "$valgrind" && valgrind=memcheck
 279         test -z "$verbose" && verbose_only="$valgrind_only"
 280 elif test -n "$valgrind"
 281 then
 282         test -z "$verbose_log" && verbose=t
 283 fi
 284
 285 if test -n "$color"
 286 then
 287         # Save the color control sequences now rather than run tput
 288         # each time say_color() is called.  This is done for two
 289         # reasons:
 290         #   * TERM will be changed to dumb
 291         #   * HOME will be changed to a temporary directory and tput
 292         #     might need to read ~/.terminfo from the original HOME
 293         #     directory to get the control sequences
 294         # Note:  This approach assumes the control sequences don't end
 295         # in a newline for any terminal of interest (command
 296         # substitutions strip trailing newlines).  Given that most
 297         # (all?) terminals in common use are related to ECMA-48, this
 298         # shouldn't be a problem.
 299         say_color_error=$(tput bold; tput setaf 1) # bold red
 300         say_color_skip=$(tput setaf 4) # blue
 301         say_color_warn=$(tput setaf 3) # brown/yellow
 302         say_color_pass=$(tput setaf 2) # green
 303         say_color_info=$(tput setaf 6) # cyan
 304         say_color_reset=$(tput sgr0)
 305         say_color_="" # no formatting for normal text
 306         say_color () {
 307                 test -z "$1" && test -n "$quiet" && return
 308                 eval "say_color_color=\$say_color_$1"
 309                 shift
 310                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 311         }
 312 else
 313         say_color() {
 314                 test -z "$1" && test -n "$quiet" && return
 315                 shift
 316                 printf "%s\n" "$*"
 317         }
 318 fi
 319
 320 TERM=dumb
 321 export TERM
 322
 323 error () {
 324         say_color error "error: $*"
 325         GIT_EXIT_OK=t
 326         exit 1
 327 }
 328
 329 say () {
 330         say_color info "$*"
 331 }
 332
 333 if test -n "$HARNESS_ACTIVE"
 334 then
 335         if test "$verbose" = t || test -n "$verbose_only"
 336         then
 337                 printf 'Bail out! %s\n' \
 338                  'verbose mode forbidden under TAP harness; try --verbose-log'
 339                 exit 1
 340         fi
 341 fi
 342
 343 test "${test_description}" != "" ||
 344 error "Test script did not set test_description."
 345
 346 if test "$help" = "t"
 347 then
 348         printf '%s\n' "$test_description"
 349         exit 0
 350 fi
 351
 352 exec 5>&1
 353 exec 6<&0
 354 exec 7>&2
 355 if test "$verbose_log" = "t"
 356 then
 357         exec 3>>"$GIT_TEST_TEE_OUTPUT_FILE" 4>&3
 358 elif test "$verbose" = "t"
 359 then
 360         exec 4>&2 3>&1
 361 else
 362         exec 4>/dev/null 3>/dev/null
 363 fi
 364
 365 # Send any "-x" output directly to stderr to avoid polluting tests
 366 # which capture stderr. We can do this unconditionally since it
 367 # has no effect if tracing isn't turned on.
 368 #
 369 # Note that this sets up the trace fd as soon as we assign the variable, so it
 370 # must come after the creation of descriptor 4 above. Likewise, we must never
 371 # unset this, as it has the side effect of closing descriptor 4, which we
 372 # use to show verbose tests to the user.
 373 #
 374 # Note also that we don't need or want to export it. The tracing is local to
 375 # this shell, and we would not want to influence any shells we exec.
 376 BASH_XTRACEFD=4
 377
 378 test_failure=0
 379 test_count=0
 380 test_fixed=0
 381 test_broken=0
 382 test_success=0
 383
 384 test_external_has_tap=0
 385
 386 die () {
 387         code=$?
 388         if test -n "$GIT_EXIT_OK"
 389         then
 390                 exit $code
 391         else
 392                 echo >&5 "FATAL: Unexpected exit with code $code"
 393                 exit 1
 394         fi
 395 }
 396
 397 GIT_EXIT_OK=
 398 trap 'die' EXIT
 399 trap 'exit $?' INT
 400
 401 # The user-facing functions are loaded from a separate file so that
 402 # test_perf subshells can have them too
 403 . "$TEST_DIRECTORY/test-lib-functions.sh"
 404
 405 # You are not expected to call test_ok_ and test_failure_ directly, use
 406 # the test_expect_* functions instead.
 407
 408 test_ok_ () {
 409         test_success=$(($test_success + 1))
 410         say_color "" "ok $test_count - $@"
 411 }
 412
 413 test_failure_ () {
 414         test_failure=$(($test_failure + 1))
 415         say_color error "not ok $test_count - $1"
 416         shift
 417         printf '%s\n' "$*" | sed -e 's/^/#      /'
 418         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 419 }
 420
 421 test_known_broken_ok_ () {
 422         test_fixed=$(($test_fixed+1))
 423         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 424 }
 425
 426 test_known_broken_failure_ () {
 427         test_broken=$(($test_broken+1))
 428         say_color warn "not ok $test_count - $@ # TODO known breakage"
 429 }
 430
 431 test_debug () {
 432         test "$debug" = "" || eval "$1"
 433 }
 434
 435 match_pattern_list () {
 436         arg="$1"
 437         shift
 438         test -z "$*" && return 1
 439         for pattern_
 440         do
 441                 case "$arg" in
 442                 $pattern_)
 443                         return 0
 444                 esac
 445         done
 446         return 1
 447 }
 448
 449 match_test_selector_list () {
 450         title="$1"
 451         shift
 452         arg="$1"
 453         shift
 454         test -z "$1" && return 0
 455
 456         # Both commas and whitespace are accepted as separators.
 457         OLDIFS=$IFS
 458         IFS='   ,'
 459         set -- $1
 460         IFS=$OLDIFS
 461
 462         # If the first selector is negative we include by default.
 463         include=
 464         case "$1" in
 465                 !*) include=t ;;
 466         esac
 467
 468         for selector
 469         do
 470                 orig_selector=$selector
 471
 472                 positive=t
 473                 case "$selector" in
 474                         !*)
 475                                 positive=
 476                                 selector=${selector##?}
 477                                 ;;
 478                 esac
 479
 480                 test -z "$selector" && continue
 481
 482                 case "$selector" in
 483                         *-*)
 484                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 485                                 then
 486                                         echo "error: $title: invalid non-numeric in range" \
 487                                                 "start: '$orig_selector'" >&2
 488                                         exit 1
 489                                 fi
 490                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 491                                 then
 492                                         echo "error: $title: invalid non-numeric in range" \
 493                                                 "end: '$orig_selector'" >&2
 494                                         exit 1
 495                                 fi
 496                                 ;;
 497                         *)
 498                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 499                                 then
 500                                         echo "error: $title: invalid non-numeric in test" \
 501                                                 "selector: '$orig_selector'" >&2
 502                                         exit 1
 503                                 fi
 504                 esac
 505
 506                 # Short cut for "obvious" cases
 507                 test -z "$include" && test -z "$positive" && continue
 508                 test -n "$include" && test -n "$positive" && continue
 509
 510                 case "$selector" in
 511                         -*)
 512                                 if test $arg -le ${selector#-}
 513                                 then
 514                                         include=$positive
 515                                 fi
 516                                 ;;
 517                         *-)
 518                                 if test $arg -ge ${selector%-}
 519                                 then
 520                                         include=$positive
 521                                 fi
 522                                 ;;
 523                         *-*)
 524                                 if test ${selector%%-*} -le $arg \
 525                                         && test $arg -le ${selector#*-}
 526                                 then
 527                                         include=$positive
 528                                 fi
 529                                 ;;
 530                         *)
 531                                 if test $arg -eq $selector
 532                                 then
 533                                         include=$positive
 534                                 fi
 535                                 ;;
 536                 esac
 537         done
 538
 539         test -n "$include"
 540 }
 541
 542 maybe_teardown_verbose () {
 543         test -z "$verbose_only" && return
 544         exec 4>/dev/null 3>/dev/null
 545         verbose=
 546 }
 547
 548 last_verbose=t
 549 maybe_setup_verbose () {
 550         test -z "$verbose_only" && return
 551         if match_pattern_list $test_count $verbose_only
 552         then
 553                 exec 4>&2 3>&1
 554                 # Emit a delimiting blank line when going from
 555                 # non-verbose to verbose.  Within verbose mode the
 556                 # delimiter is printed by test_expect_*.  The choice
 557                 # of the initial $last_verbose is such that before
 558                 # test 1, we do not print it.
 559                 test -z "$last_verbose" && echo >&3 ""
 560                 verbose=t
 561         else
 562                 exec 4>/dev/null 3>/dev/null
 563                 verbose=
 564         fi
 565         last_verbose=$verbose
 566 }
 567
 568 maybe_teardown_valgrind () {
 569         test -z "$GIT_VALGRIND" && return
 570         GIT_VALGRIND_ENABLED=
 571 }
 572
 573 maybe_setup_valgrind () {
 574         test -z "$GIT_VALGRIND" && return
 575         if test -z "$valgrind_only"
 576         then
 577                 GIT_VALGRIND_ENABLED=t
 578                 return
 579         fi
 580         GIT_VALGRIND_ENABLED=
 581         if match_pattern_list $test_count $valgrind_only
 582         then
 583                 GIT_VALGRIND_ENABLED=t
 584         fi
 585 }
 586
 587 want_trace () {
 588         test "$trace" = t && test "$verbose" = t
 589 }
 590
 591 # This is a separate function because some tests use
 592 # "return" to end a test_expect_success block early
 593 # (and we want to make sure we run any cleanup like
 594 # "set +x").
 595 test_eval_inner_ () {
 596         # Do not add anything extra (including LF) after '$*'
 597         eval "
 598                 want_trace && set -x
 599                 $*"
 600 }
 601
 602 test_eval_ () {
 603         # We run this block with stderr redirected to avoid extra cruft
 604         # during a "-x" trace. Once in "set -x" mode, we cannot prevent
 605         # the shell from printing the "set +x" to turn it off (nor the saving
 606         # of $? before that). But we can make sure that the output goes to
 607         # /dev/null.
 608         #
 609         # The test itself is run with stderr put back to &4 (so either to
 610         # /dev/null, or to the original stderr if --verbose was used).
 611         {
 612                 test_eval_inner_ "$@" </dev/null >&3 2>&4
 613                 test_eval_ret_=$?
 614                 if want_trace
 615                 then
 616                         set +x
 617                         if test "$test_eval_ret_" != 0
 618                         then
 619                                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 620                         fi
 621                 fi
 622         } 2>/dev/null
 623         return $test_eval_ret_
 624 }
 625
 626 test_run_ () {
 627         test_cleanup=:
 628         expecting_failure=$2
 629
 630         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 631                 # turn off tracing for this test-eval, as it simply creates
 632                 # confusing noise in the "-x" output
 633                 trace_tmp=$trace
 634                 trace=
 635                 # 117 is magic because it is unlikely to match the exit
 636                 # code of other programs
 637                 if test "OK-117" != "$(test_eval_ "(exit 117) && $1${LF}${LF}echo OK-\$?" 3>&1)"
 638                 then
 639                         error "bug in the test script: broken &&-chain or run-away HERE-DOC: $1"
 640                 fi
 641                 trace=$trace_tmp
 642         fi
 643
 644         setup_malloc_check
 645         test_eval_ "$1"
 646         eval_ret=$?
 647         teardown_malloc_check
 648
 649         if test -z "$immediate" || test $eval_ret = 0 ||
 650            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 651         then
 652                 setup_malloc_check
 653                 test_eval_ "$test_cleanup"
 654                 teardown_malloc_check
 655         fi
 656         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 657         then
 658                 echo ""
 659         fi
 660         return "$eval_ret"
 661 }
 662
 663 test_start_ () {
 664         test_count=$(($test_count+1))
 665         maybe_setup_verbose
 666         maybe_setup_valgrind
 667 }
 668
 669 test_finish_ () {
 670         echo >&3 ""
 671         maybe_teardown_valgrind
 672         maybe_teardown_verbose
 673 }
 674
 675 test_skip () {
 676         to_skip=
 677         skipped_reason=
 678         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 679         then
 680                 to_skip=t
 681                 skipped_reason="GIT_SKIP_TESTS"
 682         fi
 683         if test -z "$to_skip" && test -n "$test_prereq" &&
 684            ! test_have_prereq "$test_prereq"
 685         then
 686                 to_skip=t
 687
 688                 of_prereq=
 689                 if test "$missing_prereq" != "$test_prereq"
 690                 then
 691                         of_prereq=" of $test_prereq"
 692                 fi
 693                 skipped_reason="missing $missing_prereq${of_prereq}"
 694         fi
 695         if test -z "$to_skip" && test -n "$run_list" &&
 696                 ! match_test_selector_list '--run' $test_count "$run_list"
 697         then
 698                 to_skip=t
 699                 skipped_reason="--run"
 700         fi
 701
 702         case "$to_skip" in
 703         t)
 704                 say_color skip >&3 "skipping test: $@"
 705                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 706                 : true
 707                 ;;
 708         *)
 709                 false
 710                 ;;
 711         esac
 712 }
 713
 714 # stub; perf-lib overrides it
 715 test_at_end_hook_ () {
 716         :
 717 }
 718
 719 test_done () {
 720         GIT_EXIT_OK=t
 721
 722         if test -z "$HARNESS_ACTIVE"
 723         then
 724                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 725                 mkdir -p "$test_results_dir"
 726                 base=${0##*/}
 727                 test_results_path="$test_results_dir/${base%.sh}.counts"
 728
 729                 cat >"$test_results_path" <<-EOF
 730                 total $test_count
 731                 success $test_success
 732                 fixed $test_fixed
 733                 broken $test_broken
 734                 failed $test_failure
 735
 736                 EOF
 737         fi
 738
 739         if test "$test_fixed" != 0
 740         then
 741                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 742         fi
 743         if test "$test_broken" != 0
 744         then
 745                 say_color warn "# still have $test_broken known breakage(s)"
 746         fi
 747         if test "$test_broken" != 0 || test "$test_fixed" != 0
 748         then
 749                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 750                 msg="remaining $test_remaining test(s)"
 751         else
 752                 test_remaining=$test_count
 753                 msg="$test_count test(s)"
 754         fi
 755         case "$test_failure" in
 756         0)
 757                 if test $test_external_has_tap -eq 0
 758                 then
 759                         if test $test_remaining -gt 0
 760                         then
 761                                 say_color pass "# passed all $msg"
 762                         fi
 763
 764                         # Maybe print SKIP message
 765                         test -z "$skip_all" || skip_all="# SKIP $skip_all"
 766                         case "$test_count" in
 767                         0)
 768                                 say "1..$test_count${skip_all:+ $skip_all}"
 769                                 ;;
 770                         *)
 771                                 test -z "$skip_all" ||
 772                                 say_color warn "$skip_all"
 773                                 say "1..$test_count"
 774                                 ;;
 775                         esac
 776                 fi
 777
 778                 if test -z "$debug"
 779                 then
 780                         test -d "$TRASH_DIRECTORY" ||
 781                         error "Tests passed but trash directory already removed before test cleanup; aborting"
 782
 783                         cd "$TRASH_DIRECTORY/.." &&
 784                         rm -fr "$TRASH_DIRECTORY" ||
 785                         error "Tests passed but test cleanup failed; aborting"
 786                 fi
 787                 test_at_end_hook_
 788
 789                 exit 0 ;;
 790
 791         *)
 792                 if test $test_external_has_tap -eq 0
 793                 then
 794                         say_color error "# failed $test_failure among $msg"
 795                         say "1..$test_count"
 796                 fi
 797
 798                 exit 1 ;;
 799
 800         esac
 801 }
 802
 803 if test -n "$valgrind"
 804 then
 805         make_symlink () {
 806                 test -h "$2" &&
 807                 test "$1" = "$(readlink "$2")" || {
 808                         # be super paranoid
 809                         if mkdir "$2".lock
 810                         then
 811                                 rm -f "$2" &&
 812                                 ln -s "$1" "$2" &&
 813                                 rm -r "$2".lock
 814                         else
 815                                 while test -d "$2".lock
 816                                 do
 817                                         say "Waiting for lock on $2."
 818                                         sleep 1
 819                                 done
 820                         fi
 821                 }
 822         }
 823
 824         make_valgrind_symlink () {
 825                 # handle only executables, unless they are shell libraries that
 826                 # need to be in the exec-path.
 827                 test -x "$1" ||
 828                 test "# " = "$(head -c 2 <"$1")" ||
 829                 return;
 830
 831                 base=$(basename "$1")
 832                 case "$base" in
 833                 test-*)
 834                         symlink_target="$GIT_BUILD_DIR/t/helper/$base"
 835                         ;;
 836                 *)
 837                         symlink_target="$GIT_BUILD_DIR/$base"
 838                         ;;
 839                 esac
 840                 # do not override scripts
 841                 if test -x "$symlink_target" &&
 842                     test ! -d "$symlink_target" &&
 843                     test "#!" != "$(head -c 2 < "$symlink_target")"
 844                 then
 845                         symlink_target=../valgrind.sh
 846                 fi
 847                 case "$base" in
 848                 *.sh|*.perl)
 849                         symlink_target=../unprocessed-script
 850                 esac
 851                 # create the link, or replace it if it is out of date
 852                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 853         }
 854
 855         # override all git executables in TEST_DIRECTORY/..
 856         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 857         mkdir -p "$GIT_VALGRIND"/bin
 858         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
 859         do
 860                 make_valgrind_symlink $file
 861         done
 862         # special-case the mergetools loadables
 863         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 864         OLDIFS=$IFS
 865         IFS=:
 866         for path in $PATH
 867         do
 868                 ls "$path"/git-* 2> /dev/null |
 869                 while read file
 870                 do
 871                         make_valgrind_symlink "$file"
 872                 done
 873         done
 874         IFS=$OLDIFS
 875         PATH=$GIT_VALGRIND/bin:$PATH
 876         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 877         export GIT_VALGRIND
 878         GIT_VALGRIND_MODE="$valgrind"
 879         export GIT_VALGRIND_MODE
 880         GIT_VALGRIND_ENABLED=t
 881         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 882         export GIT_VALGRIND_ENABLED
 883 elif test -n "$GIT_TEST_INSTALLED"
 884 then
 885         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 886         error "Cannot run git from $GIT_TEST_INSTALLED."
 887         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 888         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 889 else # normal case, use ../bin-wrappers only unless $with_dashes:
 890         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 891         if ! test -x "$git_bin_dir/git"
 892         then
 893                 if test -z "$with_dashes"
 894                 then
 895                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 896                 fi
 897                 with_dashes=t
 898         fi
 899         PATH="$git_bin_dir:$PATH"
 900         GIT_EXEC_PATH=$GIT_BUILD_DIR
 901         if test -n "$with_dashes"
 902         then
 903                 PATH="$GIT_BUILD_DIR:$PATH"
 904         fi
 905 fi
 906 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 907 GIT_CONFIG_NOSYSTEM=1
 908 GIT_ATTR_NOSYSTEM=1
 909 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 910
 911 if test -z "$GIT_TEST_CMP"
 912 then
 913         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 914         then
 915                 GIT_TEST_CMP="$DIFF -c"
 916         else
 917                 GIT_TEST_CMP="$DIFF -u"
 918         fi
 919 fi
 920
 921 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 922 export GITPERLLIB
 923 test -d "$GIT_BUILD_DIR"/templates/blt || {
 924         error "You haven't built things yet, have you?"
 925 }
 926
 927 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-chmtime
 928 then
 929         echo >&2 'You need to build test-chmtime:'
 930         echo >&2 'Run "make t/helper/test-chmtime" in the source (toplevel) directory'
 931         exit 1
 932 fi
 933
 934 # Test repository
 935 TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 936 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 937 case "$TRASH_DIRECTORY" in
 938 /*) ;; # absolute path is good
 939  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 940 esac
 941 rm -fr "$TRASH_DIRECTORY" || {
 942         GIT_EXIT_OK=t
 943         echo >&5 "FATAL: Cannot prepare test area"
 944         exit 1
 945 }
 946
 947 HOME="$TRASH_DIRECTORY"
 948 GNUPGHOME="$HOME/gnupg-home-not-used"
 949 export HOME GNUPGHOME
 950
 951 if test -z "$TEST_NO_CREATE_REPO"
 952 then
 953         test_create_repo "$TRASH_DIRECTORY"
 954 else
 955         mkdir -p "$TRASH_DIRECTORY"
 956 fi
 957 # Use -P to resolve symlinks in our working directory so that the cwd
 958 # in subprocesses like git equals our $PWD (for pathname comparisons).
 959 cd -P "$TRASH_DIRECTORY" || exit 1
 960
 961 this_test=${0##*/}
 962 this_test=${this_test%%-*}
 963 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 964 then
 965         say_color info >&3 "skipping test $this_test altogether"
 966         skip_all="skip all tests in $this_test"
 967         test_done
 968 fi
 969
 970 # Provide an implementation of the 'yes' utility
 971 yes () {
 972         if test $# = 0
 973         then
 974                 y=y
 975         else
 976                 y="$*"
 977         fi
 978
 979         i=0
 980         while test $i -lt 99
 981         do
 982                 echo "$y"
 983                 i=$(($i+1))
 984         done
 985 }
 986
 987 # Fix some commands on Windows
 988 uname_s=$(uname -s)
 989 case $uname_s in
 990 *MINGW*)
 991         # Windows has its own (incompatible) sort and find
 992         sort () {
 993                 /usr/bin/sort "$@"
 994         }
 995         find () {
 996                 /usr/bin/find "$@"
 997         }
 998         # git sees Windows-style pwd
 999         pwd () {
1000                 builtin pwd -W
1001         }
1002         # no POSIX permissions
1003         # backslashes in pathspec are converted to '/'
1004         # exec does not inherit the PID
1005         test_set_prereq MINGW
1006         test_set_prereq NATIVE_CRLF
1007         test_set_prereq SED_STRIPS_CR
1008         test_set_prereq GREP_STRIPS_CR
1009         GIT_TEST_CMP=mingw_test_cmp
1010         ;;
1011 *CYGWIN*)
1012         test_set_prereq POSIXPERM
1013         test_set_prereq EXECKEEPSPID
1014         test_set_prereq CYGWIN
1015         test_set_prereq SED_STRIPS_CR
1016         test_set_prereq GREP_STRIPS_CR
1017         ;;
1018 *)
1019         test_set_prereq POSIXPERM
1020         test_set_prereq BSLASHPSPEC
1021         test_set_prereq EXECKEEPSPID
1022         ;;
1023 esac
1024
1025 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1026 test -z "$NO_PERL" && test_set_prereq PERL
1027 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
1028 test -z "$NO_PYTHON" && test_set_prereq PYTHON
1029 test -n "$USE_LIBPCRE1$USE_LIBPCRE2" && test_set_prereq PCRE
1030 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1031
1032 # Can we rely on git's output in the C locale?
1033 if test -n "$GETTEXT_POISON"
1034 then
1035         GIT_GETTEXT_POISON=YesPlease
1036         export GIT_GETTEXT_POISON
1037         test_set_prereq GETTEXT_POISON
1038 else
1039         test_set_prereq C_LOCALE_OUTPUT
1040 fi
1041
1042 # Use this instead of test_cmp to compare files that contain expected and
1043 # actual output from git commands that can be translated.  When running
1044 # under GETTEXT_POISON this pretends that the command produced expected
1045 # results.
1046 test_i18ncmp () {
1047         test -n "$GETTEXT_POISON" || test_cmp "$@"
1048 }
1049
1050 # Use this instead of "grep expected-string actual" to see if the
1051 # output from a git command that can be translated either contains an
1052 # expected string, or does not contain an unwanted one.  When running
1053 # under GETTEXT_POISON this pretends that the command produced expected
1054 # results.
1055 test_i18ngrep () {
1056         if test -n "$GETTEXT_POISON"
1057         then
1058             : # pretend success
1059         elif test "x!" = "x$1"
1060         then
1061                 shift
1062                 ! grep "$@"
1063         else
1064                 grep "$@"
1065         fi
1066 }
1067
1068 test_lazy_prereq PIPE '
1069         # test whether the filesystem supports FIFOs
1070         case $(uname -s) in
1071         CYGWIN*|MINGW*)
1072                 false
1073                 ;;
1074         *)
1075                 rm -f testfifo && mkfifo testfifo
1076                 ;;
1077         esac
1078 '
1079
1080 test_lazy_prereq SYMLINKS '
1081         # test whether the filesystem supports symbolic links
1082         ln -s x y && test -h y
1083 '
1084
1085 test_lazy_prereq FILEMODE '
1086         test "$(git config --bool core.filemode)" = true
1087 '
1088
1089 test_lazy_prereq CASE_INSENSITIVE_FS '
1090         echo good >CamelCase &&
1091         echo bad >camelcase &&
1092         test "$(cat CamelCase)" != good
1093 '
1094
1095 test_lazy_prereq UTF8_NFD_TO_NFC '
1096         # check whether FS converts nfd unicode to nfc
1097         auml=$(printf "\303\244")
1098         aumlcdiar=$(printf "\141\314\210")
1099         >"$auml" &&
1100         case "$(echo *)" in
1101         "$aumlcdiar")
1102                 true ;;
1103         *)
1104                 false ;;
1105         esac
1106 '
1107
1108 test_lazy_prereq AUTOIDENT '
1109         sane_unset GIT_AUTHOR_NAME &&
1110         sane_unset GIT_AUTHOR_EMAIL &&
1111         git var GIT_AUTHOR_IDENT
1112 '
1113
1114 test_lazy_prereq EXPENSIVE '
1115         test -n "$GIT_TEST_LONG"
1116 '
1117
1118 test_lazy_prereq USR_BIN_TIME '
1119         test -x /usr/bin/time
1120 '
1121
1122 test_lazy_prereq NOT_ROOT '
1123         uid=$(id -u) &&
1124         test "$uid" != 0
1125 '
1126
1127 test_lazy_prereq JGIT '
1128         type jgit
1129 '
1130
1131 # SANITY is about "can you correctly predict what the filesystem would
1132 # do by only looking at the permission bits of the files and
1133 # directories?"  A typical example of !SANITY is running the test
1134 # suite as root, where a test may expect "chmod -r file && cat file"
1135 # to fail because file is supposed to be unreadable after a successful
1136 # chmod.  In an environment (i.e. combination of what filesystem is
1137 # being used and who is running the tests) that lacks SANITY, you may
1138 # be able to delete or create a file when the containing directory
1139 # doesn't have write permissions, or access a file even if the
1140 # containing directory doesn't have read or execute permissions.
1141
1142 test_lazy_prereq SANITY '
1143         mkdir SANETESTD.1 SANETESTD.2 &&
1144
1145         chmod +w SANETESTD.1 SANETESTD.2 &&
1146         >SANETESTD.1/x 2>SANETESTD.2/x &&
1147         chmod -w SANETESTD.1 &&
1148         chmod -r SANETESTD.1/x &&
1149         chmod -rx SANETESTD.2 ||
1150         error "bug in test sript: cannot prepare SANETESTD"
1151
1152         ! test -r SANETESTD.1/x &&
1153         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1154         status=$?
1155
1156         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1157         rm -rf SANETESTD.1 SANETESTD.2 ||
1158         error "bug in test sript: cannot clean SANETESTD"
1159         return $status
1160 '
1161
1162 test FreeBSD != $uname_s || GIT_UNZIP=${GIT_UNZIP:-/usr/local/bin/unzip}
1163 GIT_UNZIP=${GIT_UNZIP:-unzip}
1164 test_lazy_prereq UNZIP '
1165         "$GIT_UNZIP" -v
1166         test $? -ne 127
1167 '
1168
1169 run_with_limited_cmdline () {
1170         (ulimit -s 128 && "$@")
1171 }
1172
1173 test_lazy_prereq CMDLINE_LIMIT 'run_with_limited_cmdline true'
1174
1175 build_option () {
1176         git version --build-options |
1177         sed -ne "s/^$1: //p"
1178 }
1179
1180 test_lazy_prereq LONG_IS_64BIT '
1181         test 8 -le "$(build_option sizeof-long)"
1182 '
1183
1184 test_lazy_prereq TIME_IS_64BIT 'test-date is64bit'
1185 test_lazy_prereq TIME_T_IS_64BIT 'test-date time_t-is64bit'