summaryrefslogtreecommitdiff
path: root/t/t0021-conversion.sh
blob: 34891c4b1ad1c53ebc78b18484c7c146659ce68d (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
#!/bin/sh

test_description='blob conversion via gitattributes'

. ./test-lib.sh

TEST_ROOT="$PWD"
PATH=$TEST_ROOT:$PATH

write_script <<\EOF "$TEST_ROOT/rot13.sh"
tr \
  'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' \
  'nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM'
EOF

write_script rot13-filter.pl "$PERL_PATH" \
	<"$TEST_DIRECTORY"/t0021/rot13-filter.pl

generate_random_characters () {
	LEN=$1
	NAME=$2
	test-genrandom some-seed $LEN |
		perl -pe "s/./chr((ord($&) % 26) + ord('a'))/sge" >"$TEST_ROOT/$NAME"
}

file_size () {
	perl -e 'print -s $ARGV[0]' "$1"
}

filter_git () {
	rm -f rot13-filter.log &&
	git "$@"
}

# Compare two files and ensure that `clean` and `smudge` respectively are
# called at least once if specified in the `expect` file. The actual
# invocation count is not relevant because their number can vary.
# c.f. http://public-inbox.org/git/xmqqshv18i8i.fsf@gitster.mtv.corp.google.com/
test_cmp_count () {
	expect=$1
	actual=$2
	for FILE in "$expect" "$actual"
	do
		sort "$FILE" | uniq -c |
		sed -e "s/^ *[0-9][0-9]*[ 	]*IN: /x IN: /" >"$FILE.tmp" &&
		mv "$FILE.tmp" "$FILE" || return
	done &&
	test_cmp "$expect" "$actual"
}

# Compare two files but exclude all `clean` invocations because Git can
# call `clean` zero or more times.
# c.f. http://public-inbox.org/git/xmqqshv18i8i.fsf@gitster.mtv.corp.google.com/
test_cmp_exclude_clean () {
	expect=$1
	actual=$2
	for FILE in "$expect" "$actual"
	do
		grep -v "IN: clean" "$FILE" >"$FILE.tmp" &&
		mv "$FILE.tmp" "$FILE"
	done &&
	test_cmp "$expect" "$actual"
}

# Check that the contents of two files are equal and that their rot13 version
# is equal to the committed content.
test_cmp_committed_rot13 () {
	test_cmp "$1" "$2" &&
	rot13.sh <"$1" >expected &&
	git cat-file blob :"$2" >actual &&
	test_cmp expected actual
}

test_expect_success setup '
	git config filter.rot13.smudge ./rot13.sh &&
	git config filter.rot13.clean ./rot13.sh &&

	{
	    echo "*.t filter=rot13"
	    echo "*.i ident"
	} >.gitattributes &&

	{
	    echo a b c d e f g h i j k l m
	    echo n o p q r s t u v w x y z
	    echo '\''$Id$'\''
	} >test &&
	cat test >test.t &&
	cat test >test.o &&
	cat test >test.i &&
	git add test test.t test.i &&
	rm -f test test.t test.i &&
	git checkout -- test test.t test.i &&

	echo "content-test2" >test2.o &&
	echo "content-test3 - filename with special characters" >"test3 '\''sq'\'',\$x.o"
'

script='s/^\$Id: \([0-9a-f]*\) \$/\1/p'

test_expect_success check '

	test_cmp test.o test &&
	test_cmp test.o test.t &&

	# ident should be stripped in the repository
	git diff --raw --exit-code :test :test.i &&
	id=$(git rev-parse --verify :test) &&
	embedded=$(sed -ne "$script" test.i) &&
	test "z$id" = "z$embedded" &&

	git cat-file blob :test.t >test.r &&

	./rot13.sh <test.o >test.t &&
	test_cmp test.r test.t
'

# If an expanded ident ever gets into the repository, we want to make sure that
# it is collapsed before being expanded again on checkout
test_expect_success expanded_in_repo '
	{
		echo "File with expanded keywords"
		echo "\$Id\$"
		echo "\$Id:\$"
		echo "\$Id: 0000000000000000000000000000000000000000 \$"
		echo "\$Id: NoSpaceAtEnd\$"
		echo "\$Id:NoSpaceAtFront \$"
		echo "\$Id:NoSpaceAtEitherEnd\$"
		echo "\$Id: NoTerminatingSymbol"
		echo "\$Id: Foreign Commit With Spaces \$"
	} >expanded-keywords.0 &&

	{
		cat expanded-keywords.0 &&
		printf "\$Id: NoTerminatingSymbolAtEOF"
	} >expanded-keywords &&
	cat expanded-keywords >expanded-keywords-crlf &&
	git add expanded-keywords expanded-keywords-crlf &&
	git commit -m "File with keywords expanded" &&
	id=$(git rev-parse --verify :expanded-keywords) &&

	{
		echo "File with expanded keywords"
		echo "\$Id: $id \$"
		echo "\$Id: $id \$"
		echo "\$Id: $id \$"
		echo "\$Id: $id \$"
		echo "\$Id: $id \$"
		echo "\$Id: $id \$"
		echo "\$Id: NoTerminatingSymbol"
		echo "\$Id: Foreign Commit With Spaces \$"
	} >expected-output.0 &&
	{
		cat expected-output.0 &&
		printf "\$Id: NoTerminatingSymbolAtEOF"
	} >expected-output &&
	{
		append_cr <expected-output.0 &&
		printf "\$Id: NoTerminatingSymbolAtEOF"
	} >expected-output-crlf &&
	{
		echo "expanded-keywords ident"
		echo "expanded-keywords-crlf ident text eol=crlf"
	} >>.gitattributes &&

	rm -f expanded-keywords expanded-keywords-crlf &&

	git checkout -- expanded-keywords &&
	test_cmp expanded-keywords expected-output &&

	git checkout -- expanded-keywords-crlf &&
	test_cmp expanded-keywords-crlf expected-output-crlf
'

# The use of %f in a filter definition is expanded to the path to
# the filename being smudged or cleaned.  It must be shell escaped.
# First, set up some interesting file names and pet them in
# .gitattributes.
test_expect_success 'filter shell-escaped filenames' '
	cat >argc.sh <<-EOF &&
	#!$SHELL_PATH
	cat >/dev/null
	echo argc: \$# "\$@"
	EOF
	normal=name-no-magic &&
	special="name  with '\''sq'\'' and \$x" &&
	echo some test text >"$normal" &&
	echo some test text >"$special" &&
	git add "$normal" "$special" &&
	git commit -q -m "add files" &&
	echo "name* filter=argc" >.gitattributes &&

	# delete the files and check them out again, using a smudge filter
	# that will count the args and echo the command-line back to us
	test_config filter.argc.smudge "sh ./argc.sh %f" &&
	rm "$normal" "$special" &&
	git checkout -- "$normal" "$special" &&

	# make sure argc.sh counted the right number of args
	echo "argc: 1 $normal" >expect &&
	test_cmp expect "$normal" &&
	echo "argc: 1 $special" >expect &&
	test_cmp expect "$special" &&

	# do the same thing, but with more args in the filter expression
	test_config filter.argc.smudge "sh ./argc.sh %f --my-extra-arg" &&
	rm "$normal" "$special" &&
	git checkout -- "$normal" "$special" &&

	# make sure argc.sh counted the right number of args
	echo "argc: 2 $normal --my-extra-arg" >expect &&
	test_cmp expect "$normal" &&
	echo "argc: 2 $special --my-extra-arg" >expect &&
	test_cmp expect "$special" &&
	:
'

test_expect_success 'required filter should filter data' '
	test_config filter.required.smudge ./rot13.sh &&
	test_config filter.required.clean ./rot13.sh &&
	test_config filter.required.required true &&

	echo "*.r filter=required" >.gitattributes &&

	cat test.o >test.r &&
	git add test.r &&

	rm -f test.r &&
	git checkout -- test.r &&
	test_cmp test.o test.r &&

	./rot13.sh <test.o >expected &&
	git cat-file blob :test.r >actual &&
	test_cmp expected actual
'

test_expect_success 'required filter smudge failure' '
	test_config filter.failsmudge.smudge false &&
	test_config filter.failsmudge.clean cat &&
	test_config filter.failsmudge.required true &&

	echo "*.fs filter=failsmudge" >.gitattributes &&

	echo test >test.fs &&
	git add test.fs &&
	rm -f test.fs &&
	test_must_fail git checkout -- test.fs
'

test_expect_success 'required filter clean failure' '
	test_config filter.failclean.smudge cat &&
	test_config filter.failclean.clean false &&
	test_config filter.failclean.required true &&

	echo "*.fc filter=failclean" >.gitattributes &&

	echo test >test.fc &&
	test_must_fail git add test.fc
'

test_expect_success 'filtering large input to small output should use little memory' '
	test_config filter.devnull.clean "cat >/dev/null" &&
	test_config filter.devnull.required true &&
	for i in $(test_seq 1 30); do printf "%1048576d" 1; done >30MB &&
	echo "30MB filter=devnull" >.gitattributes &&
	GIT_MMAP_LIMIT=1m GIT_ALLOC_LIMIT=1m git add 30MB
'

test_expect_success 'filter that does not read is fine' '
	test-genrandom foo $((128 * 1024 + 1)) >big &&
	echo "big filter=epipe" >.gitattributes &&
	test_config filter.epipe.clean "echo xyzzy" &&
	git add big &&
	git cat-file blob :big >actual &&
	echo xyzzy >expect &&
	test_cmp expect actual
'

test_expect_success EXPENSIVE 'filter large file' '
	test_config filter.largefile.smudge cat &&
	test_config filter.largefile.clean cat &&
	for i in $(test_seq 1 2048); do printf "%1048576d" 1; done >2GB &&
	echo "2GB filter=largefile" >.gitattributes &&
	git add 2GB 2>err &&
	test_must_be_empty err &&
	rm -f 2GB &&
	git checkout -- 2GB 2>err &&
	test_must_be_empty err
'

test_expect_success "filter: clean empty file" '
	test_config filter.in-repo-header.clean  "echo cleaned && cat" &&
	test_config filter.in-repo-header.smudge "sed 1d" &&

	echo "empty-in-worktree    filter=in-repo-header" >>.gitattributes &&
	>empty-in-worktree &&

	echo cleaned >expected &&
	git add empty-in-worktree &&
	git show :empty-in-worktree >actual &&
	test_cmp expected actual
'

test_expect_success "filter: smudge empty file" '
	test_config filter.empty-in-repo.clean "cat >/dev/null" &&
	test_config filter.empty-in-repo.smudge "echo smudged && cat" &&

	echo "empty-in-repo filter=empty-in-repo" >>.gitattributes &&
	echo dead data walking >empty-in-repo &&
	git add empty-in-repo &&

	echo smudged >expected &&
	git checkout-index --prefix=filtered- empty-in-repo &&
	test_cmp expected filtered-empty-in-repo
'

test_expect_success 'disable filter with empty override' '
	test_config_global filter.disable.smudge false &&
	test_config_global filter.disable.clean false &&
	test_config filter.disable.smudge false &&
	test_config filter.disable.clean false &&

	echo "*.disable filter=disable" >.gitattributes &&

	echo test >test.disable &&
	git -c filter.disable.clean= add test.disable 2>err &&
	test_must_be_empty err &&
	rm -f test.disable &&
	git -c filter.disable.smudge= checkout -- test.disable 2>err &&
	test_must_be_empty err
'

test_expect_success 'diff does not reuse worktree files that need cleaning' '
	test_config filter.counter.clean "echo . >>count; sed s/^/clean:/" &&
	echo "file filter=counter" >.gitattributes &&
	test_commit one file &&
	test_commit two file &&

	>count &&
	git diff-tree -p HEAD &&
	test_line_count = 0 count
'

test_expect_success PERL 'required process filter should filter data' '
	test_config_global filter.protocol.process "rot13-filter.pl clean smudge" &&
	test_config_global filter.protocol.required true &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&
		git add . &&
		git commit -m "test commit 1" &&
		git branch empty-branch &&

		cp "$TEST_ROOT/test.o" test.r &&
		cp "$TEST_ROOT/test2.o" test2.r &&
		mkdir testsubdir &&
		cp "$TEST_ROOT/test3 '\''sq'\'',\$x.o" "testsubdir/test3 '\''sq'\'',\$x.r" &&
		>test4-empty.r &&

		S=$(file_size test.r) &&
		S2=$(file_size test2.r) &&
		S3=$(file_size "testsubdir/test3 '\''sq'\'',\$x.r") &&

		filter_git add . &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: clean test.r $S [OK] -- OUT: $S . [OK]
			IN: clean test2.r $S2 [OK] -- OUT: $S2 . [OK]
			IN: clean test4-empty.r 0 [OK] -- OUT: 0  [OK]
			IN: clean testsubdir/test3 '\''sq'\'',\$x.r $S3 [OK] -- OUT: $S3 . [OK]
			STOP
		EOF
		test_cmp_count expected.log rot13-filter.log &&

		filter_git commit -m "test commit 2" &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: clean test.r $S [OK] -- OUT: $S . [OK]
			IN: clean test2.r $S2 [OK] -- OUT: $S2 . [OK]
			IN: clean test4-empty.r 0 [OK] -- OUT: 0  [OK]
			IN: clean testsubdir/test3 '\''sq'\'',\$x.r $S3 [OK] -- OUT: $S3 . [OK]
			IN: clean test.r $S [OK] -- OUT: $S . [OK]
			IN: clean test2.r $S2 [OK] -- OUT: $S2 . [OK]
			IN: clean test4-empty.r 0 [OK] -- OUT: 0  [OK]
			IN: clean testsubdir/test3 '\''sq'\'',\$x.r $S3 [OK] -- OUT: $S3 . [OK]
			STOP
		EOF
		test_cmp_count expected.log rot13-filter.log &&

		rm -f test2.r "testsubdir/test3 '\''sq'\'',\$x.r" &&

		filter_git checkout --quiet --no-progress . &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: smudge test2.r $S2 [OK] -- OUT: $S2 . [OK]
			IN: smudge testsubdir/test3 '\''sq'\'',\$x.r $S3 [OK] -- OUT: $S3 . [OK]
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log &&

		filter_git checkout --quiet --no-progress empty-branch &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: clean test.r $S [OK] -- OUT: $S . [OK]
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log &&

		filter_git checkout --quiet --no-progress master &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: smudge test.r $S [OK] -- OUT: $S . [OK]
			IN: smudge test2.r $S2 [OK] -- OUT: $S2 . [OK]
			IN: smudge test4-empty.r 0 [OK] -- OUT: 0  [OK]
			IN: smudge testsubdir/test3 '\''sq'\'',\$x.r $S3 [OK] -- OUT: $S3 . [OK]
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log &&

		test_cmp_committed_rot13 "$TEST_ROOT/test.o" test.r &&
		test_cmp_committed_rot13 "$TEST_ROOT/test2.o" test2.r &&
		test_cmp_committed_rot13 "$TEST_ROOT/test3 '\''sq'\'',\$x.o" "testsubdir/test3 '\''sq'\'',\$x.r"
	)
'

test_expect_success PERL 'required process filter takes precedence' '
	test_config_global filter.protocol.clean false &&
	test_config_global filter.protocol.process "rot13-filter.pl clean" &&
	test_config_global filter.protocol.required true &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&
		cp "$TEST_ROOT/test.o" test.r &&
		S=$(file_size test.r) &&

		# Check that the process filter is invoked here
		filter_git add . &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: clean test.r $S [OK] -- OUT: $S . [OK]
			STOP
		EOF
		test_cmp_count expected.log rot13-filter.log
	)
'

test_expect_success PERL 'required process filter should be used only for "clean" operation only' '
	test_config_global filter.protocol.process "rot13-filter.pl clean" &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&
		cp "$TEST_ROOT/test.o" test.r &&
		S=$(file_size test.r) &&

		filter_git add . &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: clean test.r $S [OK] -- OUT: $S . [OK]
			STOP
		EOF
		test_cmp_count expected.log rot13-filter.log &&

		rm test.r &&

		filter_git checkout --quiet --no-progress . &&
		# If the filter would be used for "smudge", too, we would see
		# "IN: smudge test.r 57 [OK] -- OUT: 57 . [OK]" here
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log
	)
'

test_expect_success PERL 'required process filter should process multiple packets' '
	test_config_global filter.protocol.process "rot13-filter.pl clean smudge" &&
	test_config_global filter.protocol.required true &&

	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		# Generate data requiring 1, 2, 3 packets
		S=65516 && # PKTLINE_DATA_MAXLEN -> Maximal size of a packet
		generate_random_characters $(($S    )) 1pkt_1__.file &&
		generate_random_characters $(($S  +1)) 2pkt_1+1.file &&
		generate_random_characters $(($S*2-1)) 2pkt_2-1.file &&
		generate_random_characters $(($S*2  )) 2pkt_2__.file &&
		generate_random_characters $(($S*2+1)) 3pkt_2+1.file &&

		for FILE in "$TEST_ROOT"/*.file
		do
			cp "$FILE" . &&
			rot13.sh <"$FILE" >"$FILE.rot13"
		done &&

		echo "*.file filter=protocol" >.gitattributes &&
		filter_git add *.file .gitattributes &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: clean 1pkt_1__.file $(($S    )) [OK] -- OUT: $(($S    )) . [OK]
			IN: clean 2pkt_1+1.file $(($S  +1)) [OK] -- OUT: $(($S  +1)) .. [OK]
			IN: clean 2pkt_2-1.file $(($S*2-1)) [OK] -- OUT: $(($S*2-1)) .. [OK]
			IN: clean 2pkt_2__.file $(($S*2  )) [OK] -- OUT: $(($S*2  )) .. [OK]
			IN: clean 3pkt_2+1.file $(($S*2+1)) [OK] -- OUT: $(($S*2+1)) ... [OK]
			STOP
		EOF
		test_cmp_count expected.log rot13-filter.log &&

		rm -f *.file &&

		filter_git checkout --quiet --no-progress -- *.file &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: smudge 1pkt_1__.file $(($S    )) [OK] -- OUT: $(($S    )) . [OK]
			IN: smudge 2pkt_1+1.file $(($S  +1)) [OK] -- OUT: $(($S  +1)) .. [OK]
			IN: smudge 2pkt_2-1.file $(($S*2-1)) [OK] -- OUT: $(($S*2-1)) .. [OK]
			IN: smudge 2pkt_2__.file $(($S*2  )) [OK] -- OUT: $(($S*2  )) .. [OK]
			IN: smudge 3pkt_2+1.file $(($S*2+1)) [OK] -- OUT: $(($S*2+1)) ... [OK]
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log &&

		for FILE in *.file
		do
			test_cmp_committed_rot13 "$TEST_ROOT/$FILE" $FILE
		done
	)
'

test_expect_success PERL 'required process filter with clean error should fail' '
	test_config_global filter.protocol.process "rot13-filter.pl clean smudge" &&
	test_config_global filter.protocol.required true &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&

		cp "$TEST_ROOT/test.o" test.r &&
		echo "this is going to fail" >clean-write-fail.r &&
		echo "content-test3-subdir" >test3.r &&

		test_must_fail git add .
	)
'

test_expect_success PERL 'process filter should restart after unexpected write failure' '
	test_config_global filter.protocol.process "rot13-filter.pl clean smudge" &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&

		cp "$TEST_ROOT/test.o" test.r &&
		cp "$TEST_ROOT/test2.o" test2.r &&
		echo "this is going to fail" >smudge-write-fail.o &&
		cp smudge-write-fail.o smudge-write-fail.r &&

		S=$(file_size test.r) &&
		S2=$(file_size test2.r) &&
		SF=$(file_size smudge-write-fail.r) &&

		git add . &&
		rm -f *.r &&

		rm -f rot13-filter.log &&
		git checkout --quiet --no-progress . 2>git-stderr.log &&

		grep "smudge write error at" git-stderr.log &&
		grep "error: external filter" git-stderr.log &&

		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: smudge smudge-write-fail.r $SF [OK] -- OUT: $SF [WRITE FAIL]
			START
			init handshake complete
			IN: smudge test.r $S [OK] -- OUT: $S . [OK]
			IN: smudge test2.r $S2 [OK] -- OUT: $S2 . [OK]
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log &&

		test_cmp_committed_rot13 "$TEST_ROOT/test.o" test.r &&
		test_cmp_committed_rot13 "$TEST_ROOT/test2.o" test2.r &&

		# Smudge failed
		! test_cmp smudge-write-fail.o smudge-write-fail.r &&
		rot13.sh <smudge-write-fail.o >expected &&
		git cat-file blob :smudge-write-fail.r >actual &&
		test_cmp expected actual
	)
'

test_expect_success PERL 'process filter should not be restarted if it signals an error' '
	test_config_global filter.protocol.process "rot13-filter.pl clean smudge" &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&

		cp "$TEST_ROOT/test.o" test.r &&
		cp "$TEST_ROOT/test2.o" test2.r &&
		echo "this will cause an error" >error.o &&
		cp error.o error.r &&

		S=$(file_size test.r) &&
		S2=$(file_size test2.r) &&
		SE=$(file_size error.r) &&

		git add . &&
		rm -f *.r &&

		filter_git checkout --quiet --no-progress . &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: smudge error.r $SE [OK] -- OUT: 0 [ERROR]
			IN: smudge test.r $S [OK] -- OUT: $S . [OK]
			IN: smudge test2.r $S2 [OK] -- OUT: $S2 . [OK]
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log &&

		test_cmp_committed_rot13 "$TEST_ROOT/test.o" test.r &&
		test_cmp_committed_rot13 "$TEST_ROOT/test2.o" test2.r &&
		test_cmp error.o error.r
	)
'

test_expect_success PERL 'process filter abort stops processing of all further files' '
	test_config_global filter.protocol.process "rot13-filter.pl clean smudge" &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&

		cp "$TEST_ROOT/test.o" test.r &&
		cp "$TEST_ROOT/test2.o" test2.r &&
		echo "error this blob and all future blobs" >abort.o &&
		cp abort.o abort.r &&

		SA=$(file_size abort.r) &&

		git add . &&
		rm -f *.r &&

		# Note: This test assumes that Git filters files in alphabetical
		# order ("abort.r" before "test.r").
		filter_git checkout --quiet --no-progress . &&
		cat >expected.log <<-EOF &&
			START
			init handshake complete
			IN: smudge abort.r $SA [OK] -- OUT: 0 [ABORT]
			STOP
		EOF
		test_cmp_exclude_clean expected.log rot13-filter.log &&

		test_cmp "$TEST_ROOT/test.o" test.r &&
		test_cmp "$TEST_ROOT/test2.o" test2.r &&
		test_cmp abort.o abort.r
	)
'

test_expect_success PERL 'invalid process filter must fail (and not hang!)' '
	test_config_global filter.protocol.process cat &&
	test_config_global filter.protocol.required true &&
	rm -rf repo &&
	mkdir repo &&
	(
		cd repo &&
		git init &&

		echo "*.r filter=protocol" >.gitattributes &&

		cp "$TEST_ROOT/test.o" test.r &&
		test_must_fail git add . 2>git-stderr.log &&
		grep "does not support filter protocol version" git-stderr.log
	)
'

test_done