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="$TEST_DIRECTORY"/..
  38
  39 ################################################################
  40 # It appears that people try to run tests without building...
  41 "$GIT_BUILD_DIR/git" >/dev/null
  42 if test $? != 1
  43 then
  44         echo >&2 'error: you do not seem to have built git yet.'
  45         exit 1
  46 fi
  47
  48 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
  49 export PERL_PATH SHELL_PATH
  50
  51 # if --tee was passed, write the output not only to the terminal, but
  52 # additionally to the file test-results/$BASENAME.out, too.
  53 case "$GIT_TEST_TEE_STARTED, $* " in
  54 done,*)
  55         # do not redirect again
  56         ;;
  57 *' --tee '*|*' --va'*)
  58         mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
  59         BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
  60         (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
  61          echo $? > $BASE.exit) | tee $BASE.out
  62         test "$(cat $BASE.exit)" = 0
  63         exit
  64         ;;
  65 esac
  66
  67 # For repeatability, reset the environment to known value.
  68 # TERM is sanitized below, after saving color control sequences.
  69 LANG=C
  70 LC_ALL=C
  71 PAGER=cat
  72 TZ=UTC
  73 export LANG LC_ALL PAGER TZ
  74 EDITOR=:
  75 # A call to "unset" with no arguments causes at least Solaris 10
  76 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
  77 # deriving from the command substitution clustered with the other
  78 # ones.
  79 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
  80         my @env = keys %ENV;
  81         my $ok = join("|", qw(
  82                 TRACE
  83                 DEBUG
  84                 USE_LOOKUP
  85                 TEST
  86                 .*_TEST
  87                 PROVE
  88                 VALGRIND
  89                 UNZIP
  90                 PERF_
  91                 CURL_VERBOSE
  92                 TRACE_CURL
  93         ));
  94         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
  95         print join("\n", @vars);
  96 ')
  97 unset XDG_CONFIG_HOME
  98 unset GITPERLLIB
  99 GIT_AUTHOR_EMAIL=author@example.com
 100 GIT_AUTHOR_NAME='A U Thor'
 101 GIT_COMMITTER_EMAIL=committer@example.com
 102 GIT_COMMITTER_NAME='C O Mitter'
 103 GIT_MERGE_VERBOSITY=5
 104 GIT_MERGE_AUTOEDIT=no
 105 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
 106 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 107 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 108 export EDITOR
 109
 110 # Tests using GIT_TRACE typically don't want <timestamp> <file>:<line> output
 111 GIT_TRACE_BARE=1
 112 export GIT_TRACE_BARE
 113
 114 if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
 115 then
 116         GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
 117         export GIT_INDEX_VERSION
 118 fi
 119
 120 # Add libc MALLOC and MALLOC_PERTURB test
 121 # only if we are not executing the test with valgrind
 122 if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
 123    test -n "$TEST_NO_MALLOC_CHECK"
 124 then
 125         setup_malloc_check () {
 126                 : nothing
 127         }
 128         teardown_malloc_check () {
 129                 : nothing
 130         }
 131 else
 132         setup_malloc_check () {
 133                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
 134                 export MALLOC_CHECK_ MALLOC_PERTURB_
 135         }
 136         teardown_malloc_check () {
 137                 unset MALLOC_CHECK_ MALLOC_PERTURB_
 138         }
 139 fi
 140
 141 : ${ASAN_OPTIONS=detect_leaks=0}
 142 export ASAN_OPTIONS
 143
 144 # Protect ourselves from common misconfiguration to export
 145 # CDPATH into the environment
 146 unset CDPATH
 147
 148 unset GREP_OPTIONS
 149 unset UNZIP
 150
 151 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 152 1|2|true)
 153         GIT_TRACE=4
 154         ;;
 155 esac
 156
 157 # Convenience
 158 #
 159 # A regexp to match 5 and 40 hexdigits
 160 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
 161 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
 162
 163 # Zero SHA-1
 164 _z40=0000000000000000000000000000000000000000
 165
 166 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
 167 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
 168
 169 # Line feed
 170 LF='
 171 '
 172
 173 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
 174 # when case-folding filenames
 175 u200c=$(printf '\342\200\214')
 176
 177 export _x05 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
 178
 179 # Each test should start with something like this, after copyright notices:
 180 #
 181 # test_description='Description of this test...
 182 # This test checks if command xyzzy does the right thing...
 183 # '
 184 # . ./test-lib.sh
 185 test "x$TERM" != "xdumb" && (
 186                 test -t 1 &&
 187                 tput bold >/dev/null 2>&1 &&
 188                 tput setaf 1 >/dev/null 2>&1 &&
 189                 tput sgr0 >/dev/null 2>&1
 190         ) &&
 191         color=t
 192
 193 while test "$#" -ne 0
 194 do
 195         case "$1" in
 196         -d|--d|--de|--deb|--debu|--debug)
 197                 debug=t; shift ;;
 198         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
 199                 immediate=t; shift ;;
 200         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 201                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
 202         -r)
 203                 shift; test "$#" -ne 0 || {
 204                         echo 'error: -r requires an argument' >&2;
 205                         exit 1;
 206                 }
 207                 run_list=$1; shift ;;
 208         --run=*)
 209                 run_list=${1#--*=}; shift ;;
 210         -h|--h|--he|--hel|--help)
 211                 help=t; shift ;;
 212         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 213                 verbose=t; shift ;;
 214         --verbose-only=*)
 215                 verbose_only=${1#--*=}
 216                 shift ;;
 217         -q|--q|--qu|--qui|--quie|--quiet)
 218                 # Ignore --quiet under a TAP::Harness. Saying how many tests
 219                 # passed without the ok/not ok details is always an error.
 220                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
 221         --with-dashes)
 222                 with_dashes=t; shift ;;
 223         --no-color)
 224                 color=; shift ;;
 225         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
 226                 valgrind=memcheck
 227                 shift ;;
 228         --valgrind=*)
 229                 valgrind=${1#--*=}
 230                 shift ;;
 231         --valgrind-only=*)
 232                 valgrind_only=${1#--*=}
 233                 shift ;;
 234         --tee)
 235                 shift ;; # was handled already
 236         --root=*)
 237                 root=${1#--*=}
 238                 shift ;;
 239         --chain-lint)
 240                 GIT_TEST_CHAIN_LINT=1
 241                 shift ;;
 242         --no-chain-lint)
 243                 GIT_TEST_CHAIN_LINT=0
 244                 shift ;;
 245         -x)
 246                 trace=t
 247                 verbose=t
 248                 shift ;;
 249         *)
 250                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
 251         esac
 252 done
 253
 254 if test -n "$valgrind_only"
 255 then
 256         test -z "$valgrind" && valgrind=memcheck
 257         test -z "$verbose" && verbose_only="$valgrind_only"
 258 elif test -n "$valgrind"
 259 then
 260         verbose=t
 261 fi
 262
 263 if test -n "$color"
 264 then
 265         # Save the color control sequences now rather than run tput
 266         # each time say_color() is called.  This is done for two
 267         # reasons:
 268         #   * TERM will be changed to dumb
 269         #   * HOME will be changed to a temporary directory and tput
 270         #     might need to read ~/.terminfo from the original HOME
 271         #     directory to get the control sequences
 272         # Note:  This approach assumes the control sequences don't end
 273         # in a newline for any terminal of interest (command
 274         # substitutions strip trailing newlines).  Given that most
 275         # (all?) terminals in common use are related to ECMA-48, this
 276         # shouldn't be a problem.
 277         say_color_error=$(tput bold; tput setaf 1) # bold red
 278         say_color_skip=$(tput setaf 4) # blue
 279         say_color_warn=$(tput setaf 3) # brown/yellow
 280         say_color_pass=$(tput setaf 2) # green
 281         say_color_info=$(tput setaf 6) # cyan
 282         say_color_reset=$(tput sgr0)
 283         say_color_="" # no formatting for normal text
 284         say_color () {
 285                 test -z "$1" && test -n "$quiet" && return
 286                 eval "say_color_color=\$say_color_$1"
 287                 shift
 288                 printf "%s\\n" "$say_color_color$*$say_color_reset"
 289         }
 290 else
 291         say_color() {
 292                 test -z "$1" && test -n "$quiet" && return
 293                 shift
 294                 printf "%s\n" "$*"
 295         }
 296 fi
 297
 298 TERM=dumb
 299 export TERM
 300
 301 error () {
 302         say_color error "error: $*"
 303         GIT_EXIT_OK=t
 304         exit 1
 305 }
 306
 307 say () {
 308         say_color info "$*"
 309 }
 310
 311 test "${test_description}" != "" ||
 312 error "Test script did not set test_description."
 313
 314 if test "$help" = "t"
 315 then
 316         printf '%s\n' "$test_description"
 317         exit 0
 318 fi
 319
 320 exec 5>&1
 321 exec 6<&0
 322 if test "$verbose" = "t"
 323 then
 324         exec 4>&2 3>&1
 325 else
 326         exec 4>/dev/null 3>/dev/null
 327 fi
 328
 329 # Send any "-x" output directly to stderr to avoid polluting tests
 330 # which capture stderr. We can do this unconditionally since it
 331 # has no effect if tracing isn't turned on.
 332 #
 333 # Note that this sets up the trace fd as soon as we assign the variable, so it
 334 # must come after the creation of descriptor 4 above. Likewise, we must never
 335 # unset this, as it has the side effect of closing descriptor 4, which we
 336 # use to show verbose tests to the user.
 337 #
 338 # Note also that we don't need or want to export it. The tracing is local to
 339 # this shell, and we would not want to influence any shells we exec.
 340 BASH_XTRACEFD=4
 341
 342 test_failure=0
 343 test_count=0
 344 test_fixed=0
 345 test_broken=0
 346 test_success=0
 347
 348 test_external_has_tap=0
 349
 350 die () {
 351         code=$?
 352         if test -n "$GIT_EXIT_OK"
 353         then
 354                 exit $code
 355         else
 356                 echo >&5 "FATAL: Unexpected exit with code $code"
 357                 exit 1
 358         fi
 359 }
 360
 361 GIT_EXIT_OK=
 362 trap 'die' EXIT
 363 trap 'exit $?' INT
 364
 365 # The user-facing functions are loaded from a separate file so that
 366 # test_perf subshells can have them too
 367 . "$TEST_DIRECTORY/test-lib-functions.sh"
 368
 369 # You are not expected to call test_ok_ and test_failure_ directly, use
 370 # the test_expect_* functions instead.
 371
 372 test_ok_ () {
 373         test_success=$(($test_success + 1))
 374         say_color "" "ok $test_count - $@"
 375 }
 376
 377 test_failure_ () {
 378         test_failure=$(($test_failure + 1))
 379         say_color error "not ok $test_count - $1"
 380         shift
 381         printf '%s\n' "$*" | sed -e 's/^/#      /'
 382         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
 383 }
 384
 385 test_known_broken_ok_ () {
 386         test_fixed=$(($test_fixed+1))
 387         say_color error "ok $test_count - $@ # TODO known breakage vanished"
 388 }
 389
 390 test_known_broken_failure_ () {
 391         test_broken=$(($test_broken+1))
 392         say_color warn "not ok $test_count - $@ # TODO known breakage"
 393 }
 394
 395 test_debug () {
 396         test "$debug" = "" || eval "$1"
 397 }
 398
 399 match_pattern_list () {
 400         arg="$1"
 401         shift
 402         test -z "$*" && return 1
 403         for pattern_
 404         do
 405                 case "$arg" in
 406                 $pattern_)
 407                         return 0
 408                 esac
 409         done
 410         return 1
 411 }
 412
 413 match_test_selector_list () {
 414         title="$1"
 415         shift
 416         arg="$1"
 417         shift
 418         test -z "$1" && return 0
 419
 420         # Both commas and whitespace are accepted as separators.
 421         OLDIFS=$IFS
 422         IFS='   ,'
 423         set -- $1
 424         IFS=$OLDIFS
 425
 426         # If the first selector is negative we include by default.
 427         include=
 428         case "$1" in
 429                 !*) include=t ;;
 430         esac
 431
 432         for selector
 433         do
 434                 orig_selector=$selector
 435
 436                 positive=t
 437                 case "$selector" in
 438                         !*)
 439                                 positive=
 440                                 selector=${selector##?}
 441                                 ;;
 442                 esac
 443
 444                 test -z "$selector" && continue
 445
 446                 case "$selector" in
 447                         *-*)
 448                                 if expr "z${selector%%-*}" : "z[0-9]*[^0-9]" >/dev/null
 449                                 then
 450                                         echo "error: $title: invalid non-numeric in range" \
 451                                                 "start: '$orig_selector'" >&2
 452                                         exit 1
 453                                 fi
 454                                 if expr "z${selector#*-}" : "z[0-9]*[^0-9]" >/dev/null
 455                                 then
 456                                         echo "error: $title: invalid non-numeric in range" \
 457                                                 "end: '$orig_selector'" >&2
 458                                         exit 1
 459                                 fi
 460                                 ;;
 461                         *)
 462                                 if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
 463                                 then
 464                                         echo "error: $title: invalid non-numeric in test" \
 465                                                 "selector: '$orig_selector'" >&2
 466                                         exit 1
 467                                 fi
 468                 esac
 469
 470                 # Short cut for "obvious" cases
 471                 test -z "$include" && test -z "$positive" && continue
 472                 test -n "$include" && test -n "$positive" && continue
 473
 474                 case "$selector" in
 475                         -*)
 476                                 if test $arg -le ${selector#-}
 477                                 then
 478                                         include=$positive
 479                                 fi
 480                                 ;;
 481                         *-)
 482                                 if test $arg -ge ${selector%-}
 483                                 then
 484                                         include=$positive
 485                                 fi
 486                                 ;;
 487                         *-*)
 488                                 if test ${selector%%-*} -le $arg \
 489                                         && test $arg -le ${selector#*-}
 490                                 then
 491                                         include=$positive
 492                                 fi
 493                                 ;;
 494                         *)
 495                                 if test $arg -eq $selector
 496                                 then
 497                                         include=$positive
 498                                 fi
 499                                 ;;
 500                 esac
 501         done
 502
 503         test -n "$include"
 504 }
 505
 506 maybe_teardown_verbose () {
 507         test -z "$verbose_only" && return
 508         exec 4>/dev/null 3>/dev/null
 509         verbose=
 510 }
 511
 512 last_verbose=t
 513 maybe_setup_verbose () {
 514         test -z "$verbose_only" && return
 515         if match_pattern_list $test_count $verbose_only
 516         then
 517                 exec 4>&2 3>&1
 518                 # Emit a delimiting blank line when going from
 519                 # non-verbose to verbose.  Within verbose mode the
 520                 # delimiter is printed by test_expect_*.  The choice
 521                 # of the initial $last_verbose is such that before
 522                 # test 1, we do not print it.
 523                 test -z "$last_verbose" && echo >&3 ""
 524                 verbose=t
 525         else
 526                 exec 4>/dev/null 3>/dev/null
 527                 verbose=
 528         fi
 529         last_verbose=$verbose
 530 }
 531
 532 maybe_teardown_valgrind () {
 533         test -z "$GIT_VALGRIND" && return
 534         GIT_VALGRIND_ENABLED=
 535 }
 536
 537 maybe_setup_valgrind () {
 538         test -z "$GIT_VALGRIND" && return
 539         if test -z "$valgrind_only"
 540         then
 541                 GIT_VALGRIND_ENABLED=t
 542                 return
 543         fi
 544         GIT_VALGRIND_ENABLED=
 545         if match_pattern_list $test_count $valgrind_only
 546         then
 547                 GIT_VALGRIND_ENABLED=t
 548         fi
 549 }
 550
 551 want_trace () {
 552         test "$trace" = t && test "$verbose" = t
 553 }
 554
 555 # This is a separate function because some tests use
 556 # "return" to end a test_expect_success block early
 557 # (and we want to make sure we run any cleanup like
 558 # "set +x").
 559 test_eval_inner_ () {
 560         # Do not add anything extra (including LF) after '$*'
 561         eval "
 562                 want_trace && set -x
 563                 $*"
 564 }
 565
 566 test_eval_ () {
 567         # We run this block with stderr redirected to avoid extra cruft
 568         # during a "-x" trace. Once in "set -x" mode, we cannot prevent
 569         # the shell from printing the "set +x" to turn it off (nor the saving
 570         # of $? before that). But we can make sure that the output goes to
 571         # /dev/null.
 572         #
 573         # The test itself is run with stderr put back to &4 (so either to
 574         # /dev/null, or to the original stderr if --verbose was used).
 575         {
 576                 test_eval_inner_ "$@" </dev/null >&3 2>&4
 577                 test_eval_ret_=$?
 578                 if want_trace
 579                 then
 580                         set +x
 581                         if test "$test_eval_ret_" != 0
 582                         then
 583                                 say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
 584                         fi
 585                 fi
 586         } 2>/dev/null
 587         return $test_eval_ret_
 588 }
 589
 590 test_run_ () {
 591         test_cleanup=:
 592         expecting_failure=$2
 593
 594         if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
 595                 # turn off tracing for this test-eval, as it simply creates
 596                 # confusing noise in the "-x" output
 597                 trace_tmp=$trace
 598                 trace=
 599                 # 117 is magic because it is unlikely to match the exit
 600                 # code of other programs
 601                 test_eval_ "(exit 117) && $1"
 602                 if test "$?" != 117; then
 603                         error "bug in the test script: broken &&-chain: $1"
 604                 fi
 605                 trace=$trace_tmp
 606         fi
 607
 608         setup_malloc_check
 609         test_eval_ "$1"
 610         eval_ret=$?
 611         teardown_malloc_check
 612
 613         if test -z "$immediate" || test $eval_ret = 0 ||
 614            test -n "$expecting_failure" && test "$test_cleanup" != ":"
 615         then
 616                 setup_malloc_check
 617                 test_eval_ "$test_cleanup"
 618                 teardown_malloc_check
 619         fi
 620         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
 621         then
 622                 echo ""
 623         fi
 624         return "$eval_ret"
 625 }
 626
 627 test_start_ () {
 628         test_count=$(($test_count+1))
 629         maybe_setup_verbose
 630         maybe_setup_valgrind
 631 }
 632
 633 test_finish_ () {
 634         echo >&3 ""
 635         maybe_teardown_valgrind
 636         maybe_teardown_verbose
 637 }
 638
 639 test_skip () {
 640         to_skip=
 641         skipped_reason=
 642         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
 643         then
 644                 to_skip=t
 645                 skipped_reason="GIT_SKIP_TESTS"
 646         fi
 647         if test -z "$to_skip" && test -n "$test_prereq" &&
 648            ! test_have_prereq "$test_prereq"
 649         then
 650                 to_skip=t
 651
 652                 of_prereq=
 653                 if test "$missing_prereq" != "$test_prereq"
 654                 then
 655                         of_prereq=" of $test_prereq"
 656                 fi
 657                 skipped_reason="missing $missing_prereq${of_prereq}"
 658         fi
 659         if test -z "$to_skip" && test -n "$run_list" &&
 660                 ! match_test_selector_list '--run' $test_count "$run_list"
 661         then
 662                 to_skip=t
 663                 skipped_reason="--run"
 664         fi
 665
 666         case "$to_skip" in
 667         t)
 668                 say_color skip >&3 "skipping test: $@"
 669                 say_color skip "ok $test_count # skip $1 ($skipped_reason)"
 670                 : true
 671                 ;;
 672         *)
 673                 false
 674                 ;;
 675         esac
 676 }
 677
 678 # stub; perf-lib overrides it
 679 test_at_end_hook_ () {
 680         :
 681 }
 682
 683 test_done () {
 684         GIT_EXIT_OK=t
 685
 686         if test -z "$HARNESS_ACTIVE"
 687         then
 688                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 689                 mkdir -p "$test_results_dir"
 690                 base=${0##*/}
 691                 test_results_path="$test_results_dir/${base%.sh}.counts"
 692
 693                 cat >"$test_results_path" <<-EOF
 694                 total $test_count
 695                 success $test_success
 696                 fixed $test_fixed
 697                 broken $test_broken
 698                 failed $test_failure
 699
 700                 EOF
 701         fi
 702
 703         if test "$test_fixed" != 0
 704         then
 705                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
 706         fi
 707         if test "$test_broken" != 0
 708         then
 709                 say_color warn "# still have $test_broken known breakage(s)"
 710         fi
 711         if test "$test_broken" != 0 || test "$test_fixed" != 0
 712         then
 713                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
 714                 msg="remaining $test_remaining test(s)"
 715         else
 716                 test_remaining=$test_count
 717                 msg="$test_count test(s)"
 718         fi
 719         case "$test_failure" in
 720         0)
 721                 # Maybe print SKIP message
 722                 if test -n "$skip_all" && test $test_count -gt 0
 723                 then
 724                         error "Can't use skip_all after running some tests"
 725                 fi
 726                 test -z "$skip_all" || skip_all=" # SKIP $skip_all"
 727
 728                 if test $test_external_has_tap -eq 0
 729                 then
 730                         if test $test_remaining -gt 0
 731                         then
 732                                 say_color pass "# passed all $msg"
 733                         fi
 734                         say "1..$test_count$skip_all"
 735                 fi
 736
 737                 test -d "$remove_trash" &&
 738                 cd "$(dirname "$remove_trash")" &&
 739                 rm -rf "$(basename "$remove_trash")"
 740
 741                 test_at_end_hook_
 742
 743                 exit 0 ;;
 744
 745         *)
 746                 if test $test_external_has_tap -eq 0
 747                 then
 748                         say_color error "# failed $test_failure among $msg"
 749                         say "1..$test_count"
 750                 fi
 751
 752                 exit 1 ;;
 753
 754         esac
 755 }
 756
 757 if test -n "$valgrind"
 758 then
 759         make_symlink () {
 760                 test -h "$2" &&
 761                 test "$1" = "$(readlink "$2")" || {
 762                         # be super paranoid
 763                         if mkdir "$2".lock
 764                         then
 765                                 rm -f "$2" &&
 766                                 ln -s "$1" "$2" &&
 767                                 rm -r "$2".lock
 768                         else
 769                                 while test -d "$2".lock
 770                                 do
 771                                         say "Waiting for lock on $2."
 772                                         sleep 1
 773                                 done
 774                         fi
 775                 }
 776         }
 777
 778         make_valgrind_symlink () {
 779                 # handle only executables, unless they are shell libraries that
 780                 # need to be in the exec-path.
 781                 test -x "$1" ||
 782                 test "# " = "$(head -c 2 <"$1")" ||
 783                 return;
 784
 785                 base=$(basename "$1")
 786                 symlink_target=$GIT_BUILD_DIR/$base
 787                 # do not override scripts
 788                 if test -x "$symlink_target" &&
 789                     test ! -d "$symlink_target" &&
 790                     test "#!" != "$(head -c 2 < "$symlink_target")"
 791                 then
 792                         symlink_target=../valgrind.sh
 793                 fi
 794                 case "$base" in
 795                 *.sh|*.perl)
 796                         symlink_target=../unprocessed-script
 797                 esac
 798                 # create the link, or replace it if it is out of date
 799                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
 800         }
 801
 802         # override all git executables in TEST_DIRECTORY/..
 803         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
 804         mkdir -p "$GIT_VALGRIND"/bin
 805         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/t/helper/test-*
 806         do
 807                 make_valgrind_symlink $file
 808         done
 809         # special-case the mergetools loadables
 810         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
 811         OLDIFS=$IFS
 812         IFS=:
 813         for path in $PATH
 814         do
 815                 ls "$path"/git-* 2> /dev/null |
 816                 while read file
 817                 do
 818                         make_valgrind_symlink "$file"
 819                 done
 820         done
 821         IFS=$OLDIFS
 822         PATH=$GIT_VALGRIND/bin:$PATH
 823         GIT_EXEC_PATH=$GIT_VALGRIND/bin
 824         export GIT_VALGRIND
 825         GIT_VALGRIND_MODE="$valgrind"
 826         export GIT_VALGRIND_MODE
 827         GIT_VALGRIND_ENABLED=t
 828         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
 829         export GIT_VALGRIND_ENABLED
 830 elif test -n "$GIT_TEST_INSTALLED"
 831 then
 832         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
 833         error "Cannot run git from $GIT_TEST_INSTALLED."
 834         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
 835         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
 836 else # normal case, use ../bin-wrappers only unless $with_dashes:
 837         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
 838         if ! test -x "$git_bin_dir/git"
 839         then
 840                 if test -z "$with_dashes"
 841                 then
 842                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
 843                 fi
 844                 with_dashes=t
 845         fi
 846         PATH="$git_bin_dir:$PATH"
 847         GIT_EXEC_PATH=$GIT_BUILD_DIR
 848         if test -n "$with_dashes"
 849         then
 850                 PATH="$GIT_BUILD_DIR:$PATH"
 851         fi
 852 fi
 853 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
 854 GIT_CONFIG_NOSYSTEM=1
 855 GIT_ATTR_NOSYSTEM=1
 856 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
 857
 858 if test -z "$GIT_TEST_CMP"
 859 then
 860         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
 861         then
 862                 GIT_TEST_CMP="$DIFF -c"
 863         else
 864                 GIT_TEST_CMP="$DIFF -u"
 865         fi
 866 fi
 867
 868 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
 869 export GITPERLLIB
 870 test -d "$GIT_BUILD_DIR"/templates/blt || {
 871         error "You haven't built things yet, have you?"
 872 }
 873
 874 if ! test -x "$GIT_BUILD_DIR"/t/helper/test-chmtime
 875 then
 876         echo >&2 'You need to build test-chmtime:'
 877         echo >&2 'Run "make t/helper/test-chmtime" in the source (toplevel) directory'
 878         exit 1
 879 fi
 880
 881 # Test repository
 882 TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
 883 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 884 case "$TRASH_DIRECTORY" in
 885 /*) ;; # absolute path is good
 886  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
 887 esac
 888 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
 889 rm -fr "$TRASH_DIRECTORY" || {
 890         GIT_EXIT_OK=t
 891         echo >&5 "FATAL: Cannot prepare test area"
 892         exit 1
 893 }
 894
 895 HOME="$TRASH_DIRECTORY"
 896 GNUPGHOME="$HOME/gnupg-home-not-used"
 897 export HOME GNUPGHOME
 898
 899 if test -z "$TEST_NO_CREATE_REPO"
 900 then
 901         test_create_repo "$TRASH_DIRECTORY"
 902 else
 903         mkdir -p "$TRASH_DIRECTORY"
 904 fi
 905 # Use -P to resolve symlinks in our working directory so that the cwd
 906 # in subprocesses like git equals our $PWD (for pathname comparisons).
 907 cd -P "$TRASH_DIRECTORY" || exit 1
 908
 909 this_test=${0##*/}
 910 this_test=${this_test%%-*}
 911 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
 912 then
 913         say_color info >&3 "skipping test $this_test altogether"
 914         skip_all="skip all tests in $this_test"
 915         test_done
 916 fi
 917
 918 # Provide an implementation of the 'yes' utility
 919 yes () {
 920         if test $# = 0
 921         then
 922                 y=y
 923         else
 924                 y="$*"
 925         fi
 926
 927         i=0
 928         while test $i -lt 99
 929         do
 930                 echo "$y"
 931                 i=$(($i+1))
 932         done
 933 }
 934
 935 # Fix some commands on Windows
 936 case $(uname -s) in
 937 *MINGW*)
 938         # Windows has its own (incompatible) sort and find
 939         sort () {
 940                 /usr/bin/sort "$@"
 941         }
 942         find () {
 943                 /usr/bin/find "$@"
 944         }
 945         sum () {
 946                 md5sum "$@"
 947         }
 948         # git sees Windows-style pwd
 949         pwd () {
 950                 builtin pwd -W
 951         }
 952         # no POSIX permissions
 953         # backslashes in pathspec are converted to '/'
 954         # exec does not inherit the PID
 955         test_set_prereq MINGW
 956         test_set_prereq NATIVE_CRLF
 957         test_set_prereq SED_STRIPS_CR
 958         test_set_prereq GREP_STRIPS_CR
 959         GIT_TEST_CMP=mingw_test_cmp
 960         ;;
 961 *CYGWIN*)
 962         test_set_prereq POSIXPERM
 963         test_set_prereq EXECKEEPSPID
 964         test_set_prereq CYGWIN
 965         test_set_prereq SED_STRIPS_CR
 966         test_set_prereq GREP_STRIPS_CR
 967         ;;
 968 *)
 969         test_set_prereq POSIXPERM
 970         test_set_prereq BSLASHPSPEC
 971         test_set_prereq EXECKEEPSPID
 972         ;;
 973 esac
 974
 975 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 976 test -z "$NO_PERL" && test_set_prereq PERL
 977 test -z "$NO_PYTHON" && test_set_prereq PYTHON
 978 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
 979 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
 980
 981 # Can we rely on git's output in the C locale?
 982 if test -n "$GETTEXT_POISON"
 983 then
 984         GIT_GETTEXT_POISON=YesPlease
 985         export GIT_GETTEXT_POISON
 986         test_set_prereq GETTEXT_POISON
 987 else
 988         test_set_prereq C_LOCALE_OUTPUT
 989 fi
 990
 991 # Use this instead of test_cmp to compare files that contain expected and
 992 # actual output from git commands that can be translated.  When running
 993 # under GETTEXT_POISON this pretends that the command produced expected
 994 # results.
 995 test_i18ncmp () {
 996         test -n "$GETTEXT_POISON" || test_cmp "$@"
 997 }
 998
 999 # Use this instead of "grep expected-string actual" to see if the
1000 # output from a git command that can be translated either contains an
1001 # expected string, or does not contain an unwanted one.  When running
1002 # under GETTEXT_POISON this pretends that the command produced expected
1003 # results.
1004 test_i18ngrep () {
1005         if test -n "$GETTEXT_POISON"
1006         then
1007             : # pretend success
1008         elif test "x!" = "x$1"
1009         then
1010                 shift
1011                 ! grep "$@"
1012         else
1013                 grep "$@"
1014         fi
1015 }
1016
1017 test_lazy_prereq PIPE '
1018         # test whether the filesystem supports FIFOs
1019         case $(uname -s) in
1020         CYGWIN*|MINGW*)
1021                 false
1022                 ;;
1023         *)
1024                 rm -f testfifo && mkfifo testfifo
1025                 ;;
1026         esac
1027 '
1028
1029 test_lazy_prereq SYMLINKS '
1030         # test whether the filesystem supports symbolic links
1031         ln -s x y && test -h y
1032 '
1033
1034 test_lazy_prereq FILEMODE '
1035         test "$(git config --bool core.filemode)" = true
1036 '
1037
1038 test_lazy_prereq CASE_INSENSITIVE_FS '
1039         echo good >CamelCase &&
1040         echo bad >camelcase &&
1041         test "$(cat CamelCase)" != good
1042 '
1043
1044 test_lazy_prereq UTF8_NFD_TO_NFC '
1045         # check whether FS converts nfd unicode to nfc
1046         auml=$(printf "\303\244")
1047         aumlcdiar=$(printf "\141\314\210")
1048         >"$auml" &&
1049         case "$(echo *)" in
1050         "$aumlcdiar")
1051                 true ;;
1052         *)
1053                 false ;;
1054         esac
1055 '
1056
1057 test_lazy_prereq AUTOIDENT '
1058         sane_unset GIT_AUTHOR_NAME &&
1059         sane_unset GIT_AUTHOR_EMAIL &&
1060         git var GIT_AUTHOR_IDENT
1061 '
1062
1063 test_lazy_prereq EXPENSIVE '
1064         test -n "$GIT_TEST_LONG"
1065 '
1066
1067 test_lazy_prereq USR_BIN_TIME '
1068         test -x /usr/bin/time
1069 '
1070
1071 test_lazy_prereq NOT_ROOT '
1072         uid=$(id -u) &&
1073         test "$uid" != 0
1074 '
1075
1076 # SANITY is about "can you correctly predict what the filesystem would
1077 # do by only looking at the permission bits of the files and
1078 # directories?"  A typical example of !SANITY is running the test
1079 # suite as root, where a test may expect "chmod -r file && cat file"
1080 # to fail because file is supposed to be unreadable after a successful
1081 # chmod.  In an environment (i.e. combination of what filesystem is
1082 # being used and who is running the tests) that lacks SANITY, you may
1083 # be able to delete or create a file when the containing directory
1084 # doesn't have write permissions, or access a file even if the
1085 # containing directory doesn't have read or execute permissions.
1086
1087 test_lazy_prereq SANITY '
1088         mkdir SANETESTD.1 SANETESTD.2 &&
1089
1090         chmod +w SANETESTD.1 SANETESTD.2 &&
1091         >SANETESTD.1/x 2>SANETESTD.2/x &&
1092         chmod -w SANETESTD.1 &&
1093         chmod -r SANETESTD.1/x &&
1094         chmod -rx SANETESTD.2 ||
1095         error "bug in test sript: cannot prepare SANETESTD"
1096
1097         ! test -r SANETESTD.1/x &&
1098         ! rm SANETESTD.1/x && ! test -f SANETESTD.2/x
1099         status=$?
1100
1101         chmod +rwx SANETESTD.1 SANETESTD.2 &&
1102         rm -rf SANETESTD.1 SANETESTD.2 ||
1103         error "bug in test sript: cannot clean SANETESTD"
1104         return $status
1105 '
1106
1107 GIT_UNZIP=${GIT_UNZIP:-unzip}
1108 test_lazy_prereq UNZIP '
1109         "$GIT_UNZIP" -v
1110         test $? -ne 127
1111 '
1112
1113 run_with_limited_cmdline () {
1114         (ulimit -s 128 && "$@")
1115 }
1116
1117 test_lazy_prereq CMDLINE_LIMIT 'run_with_limited_cmdline true'
1118
1119 build_option () {
1120         git version --build-options |
1121         sed -ne "s/^$1: //p"
1122 }
1123
1124 test_lazy_prereq LONG_IS_64BIT '
1125         test 8 -le "$(build_option sizeof-long)"
1126 '