Sync with v1.8.5.6
[git] / 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 # Keep the original TERM for say_color
19 ORIGINAL_TERM=$TERM
20
21 # Test the binaries we have just built.  The tests are kept in
22 # t/ subdirectory and are run in 'trash directory' subdirectory.
23 if test -z "$TEST_DIRECTORY"
24 then
25         # We allow tests to override this, in case they want to run tests
26         # outside of t/, e.g. for running tests on the test library
27         # itself.
28         TEST_DIRECTORY=$(pwd)
29 else
30         # ensure that TEST_DIRECTORY is an absolute path so that it
31         # is valid even if the current working directory is changed
32         TEST_DIRECTORY=$(cd "$TEST_DIRECTORY" && pwd) || exit 1
33 fi
34 if test -z "$TEST_OUTPUT_DIRECTORY"
35 then
36         # Similarly, override this to store the test-results subdir
37         # elsewhere
38         TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
39 fi
40 GIT_BUILD_DIR="$TEST_DIRECTORY"/..
41
42 ################################################################
43 # It appears that people try to run tests without building...
44 "$GIT_BUILD_DIR/git" >/dev/null
45 if test $? != 1
46 then
47         echo >&2 'error: you do not seem to have built git yet.'
48         exit 1
49 fi
50
51 . "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
52 export PERL_PATH SHELL_PATH
53
54 # if --tee was passed, write the output not only to the terminal, but
55 # additionally to the file test-results/$BASENAME.out, too.
56 case "$GIT_TEST_TEE_STARTED, $* " in
57 done,*)
58         # do not redirect again
59         ;;
60 *' --tee '*|*' --va'*)
61         mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
62         BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
63         (GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
64          echo $? > $BASE.exit) | tee $BASE.out
65         test "$(cat $BASE.exit)" = 0
66         exit
67         ;;
68 esac
69
70 # For repeatability, reset the environment to known value.
71 LANG=C
72 LC_ALL=C
73 PAGER=cat
74 TZ=UTC
75 TERM=dumb
76 export LANG LC_ALL PAGER TERM TZ
77 EDITOR=:
78 # A call to "unset" with no arguments causes at least Solaris 10
79 # /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
80 # deriving from the command substitution clustered with the other
81 # ones.
82 unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
83         my @env = keys %ENV;
84         my $ok = join("|", qw(
85                 TRACE
86                 DEBUG
87                 USE_LOOKUP
88                 TEST
89                 .*_TEST
90                 PROVE
91                 VALGRIND
92                 UNZIP
93                 PERF_
94         ));
95         my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
96         print join("\n", @vars);
97 ')
98 unset XDG_CONFIG_HOME
99 unset GITPERLLIB
100 GIT_AUTHOR_EMAIL=author@example.com
101 GIT_AUTHOR_NAME='A U Thor'
102 GIT_COMMITTER_EMAIL=committer@example.com
103 GIT_COMMITTER_NAME='C O Mitter'
104 GIT_MERGE_VERBOSITY=5
105 GIT_MERGE_AUTOEDIT=no
106 export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
107 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
108 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
109 export EDITOR
110
111 # Add libc MALLOC and MALLOC_PERTURB test
112 # only if we are not executing the test with valgrind
113 if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
114    test -n "$TEST_NO_MALLOC_CHECK"
115 then
116         setup_malloc_check () {
117                 : nothing
118         }
119         teardown_malloc_check () {
120                 : nothing
121         }
122 else
123         setup_malloc_check () {
124                 MALLOC_CHECK_=3 MALLOC_PERTURB_=165
125                 export MALLOC_CHECK_ MALLOC_PERTURB_
126         }
127         teardown_malloc_check () {
128                 unset MALLOC_CHECK_ MALLOC_PERTURB_
129         }
130 fi
131
132 # Protect ourselves from common misconfiguration to export
133 # CDPATH into the environment
134 unset CDPATH
135
136 unset GREP_OPTIONS
137 unset UNZIP
138
139 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
140 1|2|true)
141         echo "* warning: Some tests will not work if GIT_TRACE" \
142                 "is set as to trace on STDERR ! *"
143         echo "* warning: Please set GIT_TRACE to something" \
144                 "other than 1, 2 or true ! *"
145         ;;
146 esac
147
148 # Convenience
149 #
150 # A regexp to match 5 and 40 hexdigits
151 _x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
152 _x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
153
154 # Zero SHA-1
155 _z40=0000000000000000000000000000000000000000
156
157 # Line feed
158 LF='
159 '
160
161 # UTF-8 ZERO WIDTH NON-JOINER, which HFS+ ignores
162 # when case-folding filenames
163 u200c=$(printf '\342\200\214')
164
165 export _x05 _x40 _z40 LF u200c
166
167 # Each test should start with something like this, after copyright notices:
168 #
169 # test_description='Description of this test...
170 # This test checks if command xyzzy does the right thing...
171 # '
172 # . ./test-lib.sh
173 [ "x$ORIGINAL_TERM" != "xdumb" ] && (
174                 TERM=$ORIGINAL_TERM &&
175                 export TERM &&
176                 [ -t 1 ] &&
177                 tput bold >/dev/null 2>&1 &&
178                 tput setaf 1 >/dev/null 2>&1 &&
179                 tput sgr0 >/dev/null 2>&1
180         ) &&
181         color=t
182
183 while test "$#" -ne 0
184 do
185         case "$1" in
186         -d|--d|--de|--deb|--debu|--debug)
187                 debug=t; shift ;;
188         -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
189                 immediate=t; shift ;;
190         -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
191                 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
192         -h|--h|--he|--hel|--help)
193                 help=t; shift ;;
194         -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
195                 verbose=t; shift ;;
196         --verbose-only=*)
197                 verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
198                 shift ;;
199         -q|--q|--qu|--qui|--quie|--quiet)
200                 # Ignore --quiet under a TAP::Harness. Saying how many tests
201                 # passed without the ok/not ok details is always an error.
202                 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
203         --with-dashes)
204                 with_dashes=t; shift ;;
205         --no-color)
206                 color=; shift ;;
207         --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
208                 valgrind=memcheck
209                 shift ;;
210         --valgrind=*)
211                 valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
212                 shift ;;
213         --valgrind-only=*)
214                 valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
215                 shift ;;
216         --tee)
217                 shift ;; # was handled already
218         --root=*)
219                 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
220                 shift ;;
221         *)
222                 echo "error: unknown test option '$1'" >&2; exit 1 ;;
223         esac
224 done
225
226 if test -n "$valgrind_only"
227 then
228         test -z "$valgrind" && valgrind=memcheck
229         test -z "$verbose" && verbose_only="$valgrind_only"
230 elif test -n "$valgrind"
231 then
232         verbose=t
233 fi
234
235 if test -n "$color"
236 then
237         say_color () {
238                 (
239                 TERM=$ORIGINAL_TERM
240                 export TERM
241                 case "$1" in
242                 error)
243                         tput bold; tput setaf 1;; # bold red
244                 skip)
245                         tput setaf 4;; # blue
246                 warn)
247                         tput setaf 3;; # brown/yellow
248                 pass)
249                         tput setaf 2;; # green
250                 info)
251                         tput setaf 6;; # cyan
252                 *)
253                         test -n "$quiet" && return;;
254                 esac
255                 shift
256                 printf "%s" "$*"
257                 tput sgr0
258                 echo
259                 )
260         }
261 else
262         say_color() {
263                 test -z "$1" && test -n "$quiet" && return
264                 shift
265                 printf "%s\n" "$*"
266         }
267 fi
268
269 error () {
270         say_color error "error: $*"
271         GIT_EXIT_OK=t
272         exit 1
273 }
274
275 say () {
276         say_color info "$*"
277 }
278
279 test "${test_description}" != "" ||
280 error "Test script did not set test_description."
281
282 if test "$help" = "t"
283 then
284         printf '%s\n' "$test_description"
285         exit 0
286 fi
287
288 exec 5>&1
289 exec 6<&0
290 if test "$verbose" = "t"
291 then
292         exec 4>&2 3>&1
293 else
294         exec 4>/dev/null 3>/dev/null
295 fi
296
297 test_failure=0
298 test_count=0
299 test_fixed=0
300 test_broken=0
301 test_success=0
302
303 test_external_has_tap=0
304
305 die () {
306         code=$?
307         if test -n "$GIT_EXIT_OK"
308         then
309                 exit $code
310         else
311                 echo >&5 "FATAL: Unexpected exit with code $code"
312                 exit 1
313         fi
314 }
315
316 GIT_EXIT_OK=
317 trap 'die' EXIT
318
319 # The user-facing functions are loaded from a separate file so that
320 # test_perf subshells can have them too
321 . "$TEST_DIRECTORY/test-lib-functions.sh"
322
323 # You are not expected to call test_ok_ and test_failure_ directly, use
324 # the test_expect_* functions instead.
325
326 test_ok_ () {
327         test_success=$(($test_success + 1))
328         say_color "" "ok $test_count - $@"
329 }
330
331 test_failure_ () {
332         test_failure=$(($test_failure + 1))
333         say_color error "not ok $test_count - $1"
334         shift
335         printf '%s\n' "$*" | sed -e 's/^/#      /'
336         test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
337 }
338
339 test_known_broken_ok_ () {
340         test_fixed=$(($test_fixed+1))
341         say_color error "ok $test_count - $@ # TODO known breakage vanished"
342 }
343
344 test_known_broken_failure_ () {
345         test_broken=$(($test_broken+1))
346         say_color warn "not ok $test_count - $@ # TODO known breakage"
347 }
348
349 test_debug () {
350         test "$debug" = "" || eval "$1"
351 }
352
353 match_pattern_list () {
354         arg="$1"
355         shift
356         test -z "$*" && return 1
357         for pattern_
358         do
359                 case "$arg" in
360                 $pattern_)
361                         return 0
362                 esac
363         done
364         return 1
365 }
366
367 maybe_teardown_verbose () {
368         test -z "$verbose_only" && return
369         exec 4>/dev/null 3>/dev/null
370         verbose=
371 }
372
373 last_verbose=t
374 maybe_setup_verbose () {
375         test -z "$verbose_only" && return
376         if match_pattern_list $test_count $verbose_only
377         then
378                 exec 4>&2 3>&1
379                 # Emit a delimiting blank line when going from
380                 # non-verbose to verbose.  Within verbose mode the
381                 # delimiter is printed by test_expect_*.  The choice
382                 # of the initial $last_verbose is such that before
383                 # test 1, we do not print it.
384                 test -z "$last_verbose" && echo >&3 ""
385                 verbose=t
386         else
387                 exec 4>/dev/null 3>/dev/null
388                 verbose=
389         fi
390         last_verbose=$verbose
391 }
392
393 maybe_teardown_valgrind () {
394         test -z "$GIT_VALGRIND" && return
395         GIT_VALGRIND_ENABLED=
396 }
397
398 maybe_setup_valgrind () {
399         test -z "$GIT_VALGRIND" && return
400         if test -z "$valgrind_only"
401         then
402                 GIT_VALGRIND_ENABLED=t
403                 return
404         fi
405         GIT_VALGRIND_ENABLED=
406         if match_pattern_list $test_count $valgrind_only
407         then
408                 GIT_VALGRIND_ENABLED=t
409         fi
410 }
411
412 test_eval_ () {
413         # This is a separate function because some tests use
414         # "return" to end a test_expect_success block early.
415         eval </dev/null >&3 2>&4 "$*"
416 }
417
418 test_run_ () {
419         test_cleanup=:
420         expecting_failure=$2
421         setup_malloc_check
422         test_eval_ "$1"
423         eval_ret=$?
424         teardown_malloc_check
425
426         if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
427         then
428                 setup_malloc_check
429                 test_eval_ "$test_cleanup"
430                 teardown_malloc_check
431         fi
432         if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
433         then
434                 echo ""
435         fi
436         return "$eval_ret"
437 }
438
439 test_start_ () {
440         test_count=$(($test_count+1))
441         maybe_setup_verbose
442         maybe_setup_valgrind
443 }
444
445 test_finish_ () {
446         echo >&3 ""
447         maybe_teardown_valgrind
448         maybe_teardown_verbose
449 }
450
451 test_skip () {
452         to_skip=
453         if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
454         then
455                 to_skip=t
456         fi
457         if test -z "$to_skip" && test -n "$test_prereq" &&
458            ! test_have_prereq "$test_prereq"
459         then
460                 to_skip=t
461         fi
462         case "$to_skip" in
463         t)
464                 of_prereq=
465                 if test "$missing_prereq" != "$test_prereq"
466                 then
467                         of_prereq=" of $test_prereq"
468                 fi
469
470                 say_color skip >&3 "skipping test: $@"
471                 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
472                 : true
473                 ;;
474         *)
475                 false
476                 ;;
477         esac
478 }
479
480 # stub; perf-lib overrides it
481 test_at_end_hook_ () {
482         :
483 }
484
485 test_done () {
486         GIT_EXIT_OK=t
487
488         if test -z "$HARNESS_ACTIVE"
489         then
490                 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
491                 mkdir -p "$test_results_dir"
492                 base=${0##*/}
493                 test_results_path="$test_results_dir/${base%.sh}-$$.counts"
494
495                 cat >>"$test_results_path" <<-EOF
496                 total $test_count
497                 success $test_success
498                 fixed $test_fixed
499                 broken $test_broken
500                 failed $test_failure
501
502                 EOF
503         fi
504
505         if test "$test_fixed" != 0
506         then
507                 say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
508         fi
509         if test "$test_broken" != 0
510         then
511                 say_color warn "# still have $test_broken known breakage(s)"
512         fi
513         if test "$test_broken" != 0 || test "$test_fixed" != 0
514         then
515                 test_remaining=$(( $test_count - $test_broken - $test_fixed ))
516                 msg="remaining $test_remaining test(s)"
517         else
518                 test_remaining=$test_count
519                 msg="$test_count test(s)"
520         fi
521         case "$test_failure" in
522         0)
523                 # Maybe print SKIP message
524                 if test -n "$skip_all" && test $test_count -gt 0
525                 then
526                         error "Can't use skip_all after running some tests"
527                 fi
528                 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
529
530                 if test $test_external_has_tap -eq 0
531                 then
532                         if test $test_remaining -gt 0
533                         then
534                                 say_color pass "# passed all $msg"
535                         fi
536                         say "1..$test_count$skip_all"
537                 fi
538
539                 test -d "$remove_trash" &&
540                 cd "$(dirname "$remove_trash")" &&
541                 rm -rf "$(basename "$remove_trash")"
542
543                 test_at_end_hook_
544
545                 exit 0 ;;
546
547         *)
548                 if test $test_external_has_tap -eq 0
549                 then
550                         say_color error "# failed $test_failure among $msg"
551                         say "1..$test_count"
552                 fi
553
554                 exit 1 ;;
555
556         esac
557 }
558
559 if test -n "$valgrind"
560 then
561         make_symlink () {
562                 test -h "$2" &&
563                 test "$1" = "$(readlink "$2")" || {
564                         # be super paranoid
565                         if mkdir "$2".lock
566                         then
567                                 rm -f "$2" &&
568                                 ln -s "$1" "$2" &&
569                                 rm -r "$2".lock
570                         else
571                                 while test -d "$2".lock
572                                 do
573                                         say "Waiting for lock on $2."
574                                         sleep 1
575                                 done
576                         fi
577                 }
578         }
579
580         make_valgrind_symlink () {
581                 # handle only executables, unless they are shell libraries that
582                 # need to be in the exec-path.
583                 test -x "$1" ||
584                 test "# " = "$(head -c 2 <"$1")" ||
585                 return;
586
587                 base=$(basename "$1")
588                 symlink_target=$GIT_BUILD_DIR/$base
589                 # do not override scripts
590                 if test -x "$symlink_target" &&
591                     test ! -d "$symlink_target" &&
592                     test "#!" != "$(head -c 2 < "$symlink_target")"
593                 then
594                         symlink_target=../valgrind.sh
595                 fi
596                 case "$base" in
597                 *.sh|*.perl)
598                         symlink_target=../unprocessed-script
599                 esac
600                 # create the link, or replace it if it is out of date
601                 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
602         }
603
604         # override all git executables in TEST_DIRECTORY/..
605         GIT_VALGRIND=$TEST_DIRECTORY/valgrind
606         mkdir -p "$GIT_VALGRIND"/bin
607         for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
608         do
609                 make_valgrind_symlink $file
610         done
611         # special-case the mergetools loadables
612         make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
613         OLDIFS=$IFS
614         IFS=:
615         for path in $PATH
616         do
617                 ls "$path"/git-* 2> /dev/null |
618                 while read file
619                 do
620                         make_valgrind_symlink "$file"
621                 done
622         done
623         IFS=$OLDIFS
624         PATH=$GIT_VALGRIND/bin:$PATH
625         GIT_EXEC_PATH=$GIT_VALGRIND/bin
626         export GIT_VALGRIND
627         GIT_VALGRIND_MODE="$valgrind"
628         export GIT_VALGRIND_MODE
629         GIT_VALGRIND_ENABLED=t
630         test -n "$valgrind_only" && GIT_VALGRIND_ENABLED=
631         export GIT_VALGRIND_ENABLED
632 elif test -n "$GIT_TEST_INSTALLED"
633 then
634         GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
635         error "Cannot run git from $GIT_TEST_INSTALLED."
636         PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
637         GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
638 else # normal case, use ../bin-wrappers only unless $with_dashes:
639         git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
640         if ! test -x "$git_bin_dir/git"
641         then
642                 if test -z "$with_dashes"
643                 then
644                         say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
645                 fi
646                 with_dashes=t
647         fi
648         PATH="$git_bin_dir:$PATH"
649         GIT_EXEC_PATH=$GIT_BUILD_DIR
650         if test -n "$with_dashes"
651         then
652                 PATH="$GIT_BUILD_DIR:$PATH"
653         fi
654 fi
655 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
656 unset GIT_CONFIG
657 GIT_CONFIG_NOSYSTEM=1
658 GIT_ATTR_NOSYSTEM=1
659 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
660
661 if test -z "$GIT_TEST_CMP"
662 then
663         if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
664         then
665                 GIT_TEST_CMP="$DIFF -c"
666         else
667                 GIT_TEST_CMP="$DIFF -u"
668         fi
669 fi
670
671 GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
672 export GITPERLLIB
673 test -d "$GIT_BUILD_DIR"/templates/blt || {
674         error "You haven't built things yet, have you?"
675 }
676
677 if ! test -x "$GIT_BUILD_DIR"/test-chmtime
678 then
679         echo >&2 'You need to build test-chmtime:'
680         echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
681         exit 1
682 fi
683
684 # Test repository
685 TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
686 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
687 case "$TRASH_DIRECTORY" in
688 /*) ;; # absolute path is good
689  *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
690 esac
691 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
692 rm -fr "$TRASH_DIRECTORY" || {
693         GIT_EXIT_OK=t
694         echo >&5 "FATAL: Cannot prepare test area"
695         exit 1
696 }
697
698 HOME="$TRASH_DIRECTORY"
699 export HOME
700
701 if test -z "$TEST_NO_CREATE_REPO"
702 then
703         test_create_repo "$TRASH_DIRECTORY"
704 else
705         mkdir -p "$TRASH_DIRECTORY"
706 fi
707 # Use -P to resolve symlinks in our working directory so that the cwd
708 # in subprocesses like git equals our $PWD (for pathname comparisons).
709 cd -P "$TRASH_DIRECTORY" || exit 1
710
711 this_test=${0##*/}
712 this_test=${this_test%%-*}
713 if match_pattern_list "$this_test" $GIT_SKIP_TESTS
714 then
715         say_color info >&3 "skipping test $this_test altogether"
716         skip_all="skip all tests in $this_test"
717         test_done
718 fi
719
720 # Provide an implementation of the 'yes' utility
721 yes () {
722         if test $# = 0
723         then
724                 y=y
725         else
726                 y="$*"
727         fi
728
729         while echo "$y"
730         do
731                 :
732         done
733 }
734
735 # Fix some commands on Windows
736 case $(uname -s) in
737 *MINGW*)
738         # Windows has its own (incompatible) sort and find
739         sort () {
740                 /usr/bin/sort "$@"
741         }
742         find () {
743                 /usr/bin/find "$@"
744         }
745         sum () {
746                 md5sum "$@"
747         }
748         # git sees Windows-style pwd
749         pwd () {
750                 builtin pwd -W
751         }
752         # no POSIX permissions
753         # backslashes in pathspec are converted to '/'
754         # exec does not inherit the PID
755         test_set_prereq MINGW
756         test_set_prereq NOT_CYGWIN
757         test_set_prereq SED_STRIPS_CR
758         test_set_prereq GREP_STRIPS_CR
759         GIT_TEST_CMP=mingw_test_cmp
760         ;;
761 *CYGWIN*)
762         test_set_prereq POSIXPERM
763         test_set_prereq EXECKEEPSPID
764         test_set_prereq NOT_MINGW
765         test_set_prereq CYGWIN
766         test_set_prereq SED_STRIPS_CR
767         test_set_prereq GREP_STRIPS_CR
768         ;;
769 *)
770         test_set_prereq POSIXPERM
771         test_set_prereq BSLASHPSPEC
772         test_set_prereq EXECKEEPSPID
773         test_set_prereq NOT_MINGW
774         test_set_prereq NOT_CYGWIN
775         ;;
776 esac
777
778 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
779 test -z "$NO_PERL" && test_set_prereq PERL
780 test -z "$NO_PYTHON" && test_set_prereq PYTHON
781 test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
782 test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
783
784 # Can we rely on git's output in the C locale?
785 if test -n "$GETTEXT_POISON"
786 then
787         GIT_GETTEXT_POISON=YesPlease
788         export GIT_GETTEXT_POISON
789         test_set_prereq GETTEXT_POISON
790 else
791         test_set_prereq C_LOCALE_OUTPUT
792 fi
793
794 # Use this instead of test_cmp to compare files that contain expected and
795 # actual output from git commands that can be translated.  When running
796 # under GETTEXT_POISON this pretends that the command produced expected
797 # results.
798 test_i18ncmp () {
799         test -n "$GETTEXT_POISON" || test_cmp "$@"
800 }
801
802 # Use this instead of "grep expected-string actual" to see if the
803 # output from a git command that can be translated either contains an
804 # expected string, or does not contain an unwanted one.  When running
805 # under GETTEXT_POISON this pretends that the command produced expected
806 # results.
807 test_i18ngrep () {
808         if test -n "$GETTEXT_POISON"
809         then
810             : # pretend success
811         elif test "x!" = "x$1"
812         then
813                 shift
814                 ! grep "$@"
815         else
816                 grep "$@"
817         fi
818 }
819
820 test_lazy_prereq PIPE '
821         # test whether the filesystem supports FIFOs
822         case $(uname -s) in
823         CYGWIN*)
824                 false
825                 ;;
826         *)
827                 rm -f testfifo && mkfifo testfifo
828                 ;;
829         esac
830 '
831
832 test_lazy_prereq SYMLINKS '
833         # test whether the filesystem supports symbolic links
834         ln -s x y && test -h y
835 '
836
837 test_lazy_prereq FILEMODE '
838         test "$(git config --bool core.filemode)" = true
839 '
840
841 test_lazy_prereq CASE_INSENSITIVE_FS '
842         echo good >CamelCase &&
843         echo bad >camelcase &&
844         test "$(cat CamelCase)" != good
845 '
846
847 test_lazy_prereq UTF8_NFD_TO_NFC '
848         # check whether FS converts nfd unicode to nfc
849         auml=$(printf "\303\244")
850         aumlcdiar=$(printf "\141\314\210")
851         >"$auml" &&
852         case "$(echo *)" in
853         "$aumlcdiar")
854                 true ;;
855         *)
856                 false ;;
857         esac
858 '
859
860 test_lazy_prereq AUTOIDENT '
861         sane_unset GIT_AUTHOR_NAME &&
862         sane_unset GIT_AUTHOR_EMAIL &&
863         git var GIT_AUTHOR_IDENT
864 '
865
866 # When the tests are run as root, permission tests will report that
867 # things are writable when they shouldn't be.
868 test -w / || test_set_prereq SANITY
869
870 GIT_UNZIP=${GIT_UNZIP:-unzip}
871 test_lazy_prereq UNZIP '
872         "$GIT_UNZIP" -v
873         test $? -ne 127
874 '