summaryrefslogtreecommitdiff
path: root/t/test-lib.sh
blob: 1aa27bdbbf39bd937a6bb66a7eafeda16bb76246 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see http://www.gnu.org/licenses/ .

# Keep the original TERM for say_color
ORIGINAL_TERM=$TERM

# Test the binaries we have just built.  The tests are kept in
# t/ subdirectory and are run in 'trash directory' subdirectory.
if test -z "$TEST_DIRECTORY"
then
	# We allow tests to override this, in case they want to run tests
	# outside of t/, e.g. for running tests on the test library
	# itself.
	TEST_DIRECTORY=$(pwd)
fi
if test -z "$TEST_OUTPUT_DIRECTORY"
then
	# Similarly, override this to store the test-results subdir
	# elsewhere
	TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
fi
GIT_BUILD_DIR="$TEST_DIRECTORY"/..

################################################################
# It appears that people try to run tests without building...
"$GIT_BUILD_DIR/git" >/dev/null
if test $? != 1
then
	echo >&2 'error: you do not seem to have built git yet.'
	exit 1
fi

. "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
export PERL_PATH SHELL_PATH

# if --tee was passed, write the output not only to the terminal, but
# additionally to the file test-results/$BASENAME.out, too.
case "$GIT_TEST_TEE_STARTED, $* " in
done,*)
	# do not redirect again
	;;
*' --tee '*|*' --va'*)
	mkdir -p "$TEST_OUTPUT_DIRECTORY/test-results"
	BASE="$TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" .sh)"
	(GIT_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
	 echo $? > $BASE.exit) | tee $BASE.out
	test "$(cat $BASE.exit)" = 0
	exit
	;;
esac

# For repeatability, reset the environment to known value.
LANG=C
LC_ALL=C
PAGER=cat
TZ=UTC
TERM=dumb
export LANG LC_ALL PAGER TERM TZ
EDITOR=:
# A call to "unset" with no arguments causes at least Solaris 10
# /usr/xpg4/bin/sh and /bin/ksh to bail out.  So keep the unsets
# deriving from the command substitution clustered with the other
# ones.
unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
	my @env = keys %ENV;
	my $ok = join("|", qw(
		TRACE
		DEBUG
		USE_LOOKUP
		TEST
		.*_TEST
		PROVE
		VALGRIND
		UNZIP
		PERF_
	));
	my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
	print join("\n", @vars);
')
unset XDG_CONFIG_HOME
unset GITPERLLIB
GIT_AUTHOR_EMAIL=author@example.com
GIT_AUTHOR_NAME='A U Thor'
GIT_COMMITTER_EMAIL=committer@example.com
GIT_COMMITTER_NAME='C O Mitter'
GIT_MERGE_VERBOSITY=5
GIT_MERGE_AUTOEDIT=no
export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
export EDITOR

# Add libc MALLOC and MALLOC_PERTURB test
# only if we are not executing the test with valgrind
if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||
   test -n "$TEST_NO_MALLOC_CHECK"
then
	setup_malloc_check () {
		: nothing
	}
	teardown_malloc_check () {
		: nothing
	}
else
	setup_malloc_check () {
		MALLOC_CHECK_=3	MALLOC_PERTURB_=165
		export MALLOC_CHECK_ MALLOC_PERTURB_
	}
	teardown_malloc_check () {
		unset MALLOC_CHECK_ MALLOC_PERTURB_
	}
fi

# Protect ourselves from common misconfiguration to export
# CDPATH into the environment
unset CDPATH

unset GREP_OPTIONS
unset UNZIP

case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
1|2|true)
	echo "* warning: Some tests will not work if GIT_TRACE" \
		"is set as to trace on STDERR ! *"
	echo "* warning: Please set GIT_TRACE to something" \
		"other than 1, 2 or true ! *"
	;;
esac

# Convenience
#
# A regexp to match 5 and 40 hexdigits
_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"

# Zero SHA-1
_z40=0000000000000000000000000000000000000000

# Line feed
LF='
'

export _x05 _x40 _z40 LF

# Each test should start with something like this, after copyright notices:
#
# test_description='Description of this test...
# This test checks if command xyzzy does the right thing...
# '
# . ./test-lib.sh
[ "x$ORIGINAL_TERM" != "xdumb" ] && (
		TERM=$ORIGINAL_TERM &&
		export TERM &&
		[ -t 1 ] &&
		tput bold >/dev/null 2>&1 &&
		tput setaf 1 >/dev/null 2>&1 &&
		tput sgr0 >/dev/null 2>&1
	) &&
	color=t

while test "$#" -ne 0
do
	case "$1" in
	-d|--d|--de|--deb|--debu|--debug)
		debug=t; shift ;;
	-i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
		immediate=t; shift ;;
	-l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
		GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
	-h|--h|--he|--hel|--help)
		help=t; shift ;;
	-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
		verbose=t; shift ;;
	--verbose-only=*)
		verbose_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	-q|--q|--qu|--qui|--quie|--quiet)
		# Ignore --quiet under a TAP::Harness. Saying how many tests
		# passed without the ok/not ok details is always an error.
		test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
	--with-dashes)
		with_dashes=t; shift ;;
	--no-color)
		color=; shift ;;
	--va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
		valgrind=memcheck
		shift ;;
	--valgrind=*)
		valgrind=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	--valgrind-only=*)
		valgrind_only=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	--valgrind-parallel=*)
		valgrind_parallel=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	--valgrind-only-stride=*)
		valgrind_only_stride=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	--valgrind-only-offset=*)
		valgrind_only_offset=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	--tee)
		shift ;; # was handled already
	--root=*)
		root=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	--statusprefix=*)
		statusprefix=$(expr "z$1" : 'z[^=]*=\(.*\)')
		shift ;;
	*)
		echo "error: unknown test option '$1'" >&2; exit 1 ;;
	esac
done

if test -n "$valgrind_only" || test -n "$valgrind_only_stride"
then
	test -z "$valgrind" && valgrind=memcheck
	test -z "$verbose" && verbose_only="$valgrind_only"
elif test -n "$valgrind"
then
	verbose=t
fi

if test -n "$color"
then
	say_color () {
		(
		TERM=$ORIGINAL_TERM
		export TERM
		case "$1" in
		error)
			tput bold; tput setaf 1;; # bold red
		skip)
			tput setaf 4;; # blue
		warn)
			tput setaf 3;; # brown/yellow
		pass)
			tput setaf 2;; # green
		info)
			tput setaf 6;; # cyan
		*)
			test -n "$quiet" && return;;
		esac
		shift
		printf "%s" "$*"
		tput sgr0
		echo
		)
	}
else
	say_color() {
		test -z "$1" && test -n "$quiet" && return
		shift
		printf "%s\n" "$*"
	}
fi

error () {
	say_color error "error: $*"
	GIT_EXIT_OK=t
	exit 1
}

say () {
	say_color info "$*"
}

test "${test_description}" != "" ||
error "Test script did not set test_description."

if test "$help" = "t"
then
	echo "$test_description"
	exit 0
fi

exec 5>&1
exec 6<&0
if test "$verbose" = "t"
then
	exec 4>&2 3>&1
else
	exec 4>/dev/null 3>/dev/null
fi

test_failure=0
test_count=0
test_fixed=0
test_broken=0
test_success=0

test_external_has_tap=0

die () {
	code=$?
	if test -n "$GIT_EXIT_OK"
	then
		exit $code
	else
		echo >&5 "FATAL: Unexpected exit with code $code"
		exit 1
	fi
}

GIT_EXIT_OK=
trap 'die' EXIT

# The user-facing functions are loaded from a separate file so that
# test_perf subshells can have them too
. "$TEST_DIRECTORY/test-lib-functions.sh"

# You are not expected to call test_ok_ and test_failure_ directly, use
# the text_expect_* functions instead.

test_ok_ () {
	test_success=$(($test_success + 1))
	say_color "" "${statusprefix}ok $test_count - $@"
}

test_failure_ () {
	test_failure=$(($test_failure + 1))
	say_color error "${statusprefix}not ok $test_count - $1"
	shift
	echo "$@" | sed -e 's/^/#	/'
	test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
}

test_known_broken_ok_ () {
	test_fixed=$(($test_fixed+1))
	say_color error "${statusprefix}ok $test_count - $@ # TODO known breakage vanished"
}

test_known_broken_failure_ () {
	test_broken=$(($test_broken+1))
	say_color warn "${statusprefix}not ok $test_count - $@ # TODO known breakage"
}

test_debug () {
	test "$debug" = "" || eval "$1"
}

match_pattern_list () {
	arg="$1"
	shift
	test -z "$*" && return 1
	for pattern_
	do
		case "$arg" in
		$pattern_)
			return 0
		esac
	done
	return 1
}

maybe_teardown_verbose () {
	test -z "$verbose_only" && return
	exec 4>/dev/null 3>/dev/null
	verbose=
}

last_verbose=t
maybe_setup_verbose () {
	test -z "$verbose_only" && return
	if match_pattern_list $test_count $verbose_only ||
		{ test -n "$valgrind_only_stride" &&
		expr $test_count "%" $valgrind_only_stride - $valgrind_only_offset = 0 >/dev/null; }
	then
		exec 4>&2 3>&1
		# Emit a delimiting blank line when going from
		# non-verbose to verbose.  Within verbose mode the
		# delimiter is printed by test_expect_*.  The choice
		# of the initial $last_verbose is such that before
		# test 1, we do not print it.
		test -z "$last_verbose" && echo >&3 ""
		verbose=t
	else
		exec 4>/dev/null 3>/dev/null
		verbose=
	fi
	last_verbose=$verbose
}

maybe_teardown_valgrind () {
	test -z "$GIT_VALGRIND" && return
	GIT_VALGRIND_ENABLED=
}

maybe_setup_valgrind () {
	test -z "$GIT_VALGRIND" && return
	if test -z "$valgrind_only" && test -z "$valgrind_only_stride"
	then
		GIT_VALGRIND_ENABLED=t
		return
	fi
	GIT_VALGRIND_ENABLED=
	if match_pattern_list $test_count $valgrind_only
	then
		GIT_VALGRIND_ENABLED=t
	elif test -n "$valgrind_only_stride" &&
		expr $test_count "%" $valgrind_only_stride - $valgrind_only_offset = 0 >/dev/null
	then
		GIT_VALGRIND_ENABLED=t
	fi
}

test_eval_ () {
	# This is a separate function because some tests use
	# "return" to end a test_expect_success block early.
	eval </dev/null >&3 2>&4 "$*"
}

test_run_ () {
	test_cleanup=:
	expecting_failure=$2
	setup_malloc_check
	test_eval_ "$1"
	eval_ret=$?
	teardown_malloc_check

	if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
	then
		setup_malloc_check
		test_eval_ "$test_cleanup"
		teardown_malloc_check
	fi
	if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"
	then
		echo ""
	fi
	return "$eval_ret"
}

test_start_ () {
	test_count=$(($test_count+1))
	maybe_setup_verbose
	maybe_setup_valgrind
}

test_finish_ () {
	echo >&3 ""
	maybe_teardown_valgrind
	maybe_teardown_verbose
}

test_skip () {
	to_skip=
	if match_pattern_list $this_test.$test_count $GIT_SKIP_TESTS
	then
		to_skip=t
	fi
	if test -z "$to_skip" && test -n "$test_prereq" &&
	   ! test_have_prereq "$test_prereq"
	then
		to_skip=t
	fi
	case "$to_skip" in
	t)
		of_prereq=
		if test "$missing_prereq" != "$test_prereq"
		then
			of_prereq=" of $test_prereq"
		fi

		say_color skip >&3 "${statusprefix}skipping test: $@"
		say_color skip "${statusprefix}ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
		: true
		;;
	*)
		false
		;;
	esac
}

# stub; perf-lib overrides it
test_at_end_hook_ () {
	:
}

test_done () {
	GIT_EXIT_OK=t

	# Note: t0000 relies on $HARNESS_ACTIVE disabling the .counts
	# output file
	if test -z "$HARNESS_ACTIVE"
	then
		test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
		mkdir -p "$test_results_dir"
		base=${0##*/}
		test_results_path="$test_results_dir/${base%.sh}-$$.counts"

		cat >>"$test_results_path" <<-EOF
		total $test_count
		success $test_success
		fixed $test_fixed
		broken $test_broken
		failed $test_failure

		EOF
	fi

	if test "$test_fixed" != 0
	then
		say_color error "${statusprefix}# $test_fixed known breakage(s) vanished; please update test(s)"
	fi
	if test "$test_broken" != 0
	then
		say_color warn "${statusprefix}# still have $test_broken known breakage(s)"
	fi
	if test "$test_broken" != 0 || test "$test_fixed" != 0
	then
		test_remaining=$(( $test_count - $test_broken - $test_fixed ))
		msg="remaining $test_remaining test(s)"
	else
		test_remaining=$test_count
		msg="$test_count test(s)"
	fi
	case "$test_failure" in
	0)
		# Maybe print SKIP message
		if test -n "$skip_all" && test $test_count -gt 0
		then
			error "Can't use skip_all after running some tests"
		fi
		[ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"

		if test $test_external_has_tap -eq 0
		then
			if test $test_remaining -gt 0
			then
				say_color pass "${statusprefix}# passed all $msg"
			fi
			say "${statusprefix}1..$test_count$skip_all"
		fi

		test -d "$remove_trash" &&
		cd "$(dirname "$remove_trash")" &&
		rm -rf "$(basename "$remove_trash")"

		test_at_end_hook_

		exit 0 ;;

	*)
		if test $test_external_has_tap -eq 0
		then
			say_color error "${statusprefix}# failed $test_failure among $msg"
			say "${statusprefix}1..$test_count"
		fi

		exit 1 ;;

	esac
}


# Set up a directory that we can put in PATH which redirects all git
# calls to 'valgrind git ...'.
if test -n "$valgrind"
then
	make_symlink () {
		test -h "$2" &&
		test "$1" = "$(readlink "$2")" || {
			# be super paranoid
			if mkdir "$2".lock
			then
				rm -f "$2" &&
				ln -s "$1" "$2" &&
				rm -r "$2".lock
			else
				while test -d "$2".lock
				do
					say "Waiting for lock on $2."
					sleep 1
				done
			fi
		}
	}

	make_valgrind_symlink () {
		# handle only executables, unless they are shell libraries that
		# need to be in the exec-path.  We will just use "#!" as a
		# guess for a shell-script, since we have no idea what the user
		# may have configured as the shell path.
		test -x "$1" ||
		test "#!" = "$(head -c 2 <"$1")" ||
		return;

		base=$(basename "$1")
		symlink_target=$GIT_BUILD_DIR/$base
		# do not override scripts
		if test -x "$symlink_target" &&
		    test ! -d "$symlink_target" &&
		    test "#!" != "$(head -c 2 < "$symlink_target")"
		then
			symlink_target=../valgrind.sh
		fi
		case "$base" in
		*.sh|*.perl)
			symlink_target=../unprocessed-script
		esac
		# create the link, or replace it if it is out of date
		make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
	}

	# In the case of --valgrind-parallel, we only need to do the
	# wrapping once, in the main script.  The worker children all
	# have $valgrind_only_stride set, so we can skip based on that.
	if test -z "$valgrind_only_stride"
	then
		# override all git executables in TEST_DIRECTORY/..
		GIT_VALGRIND=$TEST_DIRECTORY/valgrind
		mkdir -p "$GIT_VALGRIND"/bin
		for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
		do
			make_valgrind_symlink $file
		done
		# special-case the mergetools loadables
		make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
		OLDIFS=$IFS
		IFS=:
		for path in $PATH
		do
			ls "$path"/git-* 2> /dev/null |
			while read file
			do
				make_valgrind_symlink "$file"
			done
		done
		IFS=$OLDIFS
	fi
	PATH=$GIT_VALGRIND/bin:$PATH
	GIT_EXEC_PATH=$GIT_VALGRIND/bin
	export GIT_VALGRIND
	GIT_VALGRIND_MODE="$valgrind"
	export GIT_VALGRIND_MODE
	GIT_VALGRIND_ENABLED=t
	if test -n "$valgrind_only" || test -n "$valgrind_only_stride"
	then
		GIT_VALGRIND_ENABLED=
	fi
	export GIT_VALGRIND_ENABLED
elif test -n "$GIT_TEST_INSTALLED"
then
	GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path)  ||
	error "Cannot run git from $GIT_TEST_INSTALLED."
	PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
	GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
else # normal case, use ../bin-wrappers only unless $with_dashes:
	git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
	if ! test -x "$git_bin_dir/git"
	then
		if test -z "$with_dashes"
		then
			say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
		fi
		with_dashes=t
	fi
	PATH="$git_bin_dir:$PATH"
	GIT_EXEC_PATH=$GIT_BUILD_DIR
	if test -n "$with_dashes"
	then
		PATH="$GIT_BUILD_DIR:$PATH"
	fi
fi
GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
unset GIT_CONFIG
GIT_CONFIG_NOSYSTEM=1
GIT_ATTR_NOSYSTEM=1
export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM

if test -z "$GIT_TEST_CMP"
then
	if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
	then
		GIT_TEST_CMP="$DIFF -c"
	else
		GIT_TEST_CMP="$DIFF -u"
	fi
fi

GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
export GITPERLLIB
test -d "$GIT_BUILD_DIR"/templates/blt || {
	error "You haven't built things yet, have you?"
}

if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
then
	GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
	export GITPYTHONLIB
	test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
		error "You haven't built git_remote_helpers yet, have you?"
	}
fi

if ! test -x "$GIT_BUILD_DIR"/test-chmtime
then
	echo >&2 'You need to build test-chmtime:'
	echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
	exit 1
fi

# Test repository
TRASH_DIRECTORY="trash directory.$(basename "$0" .sh)"
test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
case "$TRASH_DIRECTORY" in
/*) ;; # absolute path is good
 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$TRASH_DIRECTORY" ;;
esac
test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
rm -fr "$TRASH_DIRECTORY" || {
	GIT_EXIT_OK=t
	echo >&5 "FATAL: Cannot prepare test area"
	exit 1
}

HOME="$TRASH_DIRECTORY"
export HOME

if test -z "$TEST_NO_CREATE_REPO"
then
	test_create_repo "$TRASH_DIRECTORY"
else
	mkdir -p "$TRASH_DIRECTORY"
fi

# Gross hack to spawn N sub-instances of the tests in parallel, and
# summarize the results.  Note that if this is enabled, the script
# terminates at the end of this 'if' block.
if test -n "$valgrind_parallel"
then
	for i in $(test_seq 1 $valgrind_parallel)
	do
		root="$TRASH_DIRECTORY/vgparallel-$i"
		mkdir "$root"
		TEST_OUTPUT_DIRECTORY="$root" \
			${SHELL_PATH} "$0" \
			--root="$root" --statusprefix="[$i] " \
			--valgrind="$valgrind" \
			--valgrind-only-stride="$valgrind_parallel" \
			--valgrind-only-offset="$i" &
		pids="$pids $!"
	done
	trap "kill $pids" INT TERM HUP
	wait $pids
	trap - INT TERM HUP
	for i in $(test_seq 1 $valgrind_parallel)
	do
		root="$TRASH_DIRECTORY/vgparallel-$i"
		eval "$(cat "$root/test-results/$(basename "$0" .sh)"-*.counts |
			sed 's/^\([a-z][a-z]*\) \([0-9][0-9]*\)/inner_\1=\2/')"
		test_count=$(expr $test_count + $inner_total)
		test_success=$(expr $test_success + $inner_success)
		test_fixed=$(expr $test_fixed + $inner_fixed)
		test_broken=$(expr $test_broken + $inner_broken)
		test_failure=$(expr $test_failure + $inner_failed)
	done
	test_done
fi

# Use -P to resolve symlinks in our working directory so that the cwd
# in subprocesses like git equals our $PWD (for pathname comparisons).
cd -P "$TRASH_DIRECTORY" || exit 1

this_test=${0##*/}
this_test=${this_test%%-*}
if match_pattern_list "$this_test" $GIT_SKIP_TESTS
then
	say_color info >&3 "skipping test $this_test altogether"
	skip_all="skip all tests in $this_test"
	test_done
fi

# Provide an implementation of the 'yes' utility
yes () {
	if test $# = 0
	then
		y=y
	else
		y="$*"
	fi

	while echo "$y"
	do
		:
	done
}

# Fix some commands on Windows
case $(uname -s) in
*MINGW*)
	# Windows has its own (incompatible) sort and find
	sort () {
		/usr/bin/sort "$@"
	}
	find () {
		/usr/bin/find "$@"
	}
	sum () {
		md5sum "$@"
	}
	# git sees Windows-style pwd
	pwd () {
		builtin pwd -W
	}
	# no POSIX permissions
	# backslashes in pathspec are converted to '/'
	# exec does not inherit the PID
	test_set_prereq MINGW
	test_set_prereq NOT_CYGWIN
	test_set_prereq SED_STRIPS_CR
	test_set_prereq GREP_STRIPS_CR
	;;
*CYGWIN*)
	test_set_prereq POSIXPERM
	test_set_prereq EXECKEEPSPID
	test_set_prereq NOT_MINGW
	test_set_prereq CYGWIN
	test_set_prereq SED_STRIPS_CR
	test_set_prereq GREP_STRIPS_CR
	;;
*)
	test_set_prereq POSIXPERM
	test_set_prereq BSLASHPSPEC
	test_set_prereq EXECKEEPSPID
	test_set_prereq NOT_MINGW
	test_set_prereq NOT_CYGWIN
	;;
esac

( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
test -z "$NO_PERL" && test_set_prereq PERL
test -z "$NO_PYTHON" && test_set_prereq PYTHON
test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
test -z "$NO_GETTEXT" && test_set_prereq GETTEXT

# Can we rely on git's output in the C locale?
if test -n "$GETTEXT_POISON"
then
	GIT_GETTEXT_POISON=YesPlease
	export GIT_GETTEXT_POISON
	test_set_prereq GETTEXT_POISON
else
	test_set_prereq C_LOCALE_OUTPUT
fi

# Use this instead of test_cmp to compare files that contain expected and
# actual output from git commands that can be translated.  When running
# under GETTEXT_POISON this pretends that the command produced expected
# results.
test_i18ncmp () {
	test -n "$GETTEXT_POISON" || test_cmp "$@"
}

# Use this instead of "grep expected-string actual" to see if the
# output from a git command that can be translated either contains an
# expected string, or does not contain an unwanted one.  When running
# under GETTEXT_POISON this pretends that the command produced expected
# results.
test_i18ngrep () {
	if test -n "$GETTEXT_POISON"
	then
	    : # pretend success
	elif test "x!" = "x$1"
	then
		shift
		! grep "$@"
	else
		grep "$@"
	fi
}

test_lazy_prereq PIPE '
	# test whether the filesystem supports FIFOs
	case $(uname -s) in
	CYGWIN*)
		false
		;;
	*)
		rm -f testfifo && mkfifo testfifo
		;;
	esac
'

test_lazy_prereq SYMLINKS '
	# test whether the filesystem supports symbolic links
	ln -s x y && test -h y
'

test_lazy_prereq CASE_INSENSITIVE_FS '
	echo good >CamelCase &&
	echo bad >camelcase &&
	test "$(cat CamelCase)" != good
'

test_lazy_prereq UTF8_NFD_TO_NFC '
	# check whether FS converts nfd unicode to nfc
	auml=$(printf "\303\244")
	aumlcdiar=$(printf "\141\314\210")
	>"$auml" &&
	case "$(echo *)" in
	"$aumlcdiar")
		true ;;
	*)
		false ;;
	esac
'

test_lazy_prereq AUTOIDENT '
	sane_unset GIT_AUTHOR_NAME &&
	sane_unset GIT_AUTHOR_EMAIL &&
	git var GIT_AUTHOR_IDENT
'

# When the tests are run as root, permission tests will report that
# things are writable when they shouldn't be.
test -w / || test_set_prereq SANITY

GIT_UNZIP=${GIT_UNZIP:-unzip}
test_lazy_prereq UNZIP '
	"$GIT_UNZIP" -v
	test $? -ne 127
'