about summary refs log tree commit diff
path: root/third_party/git/t/t4038-diff-combined.sh
blob: 94680836ceb5ebd15b8f1d2bdd1a10ca1cde9282 (plain) (blame)
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
#!/bin/sh

test_description='combined diff'

. ./test-lib.sh
. "$TEST_DIRECTORY"/diff-lib.sh

setup_helper () {
	one=$1 branch=$2 side=$3 &&

	git branch $side $branch &&
	for l in $one two three fyra
	do
		echo $l
	done >file &&
	git add file &&
	test_tick &&
	git commit -m $branch &&
	git checkout $side &&
	for l in $one two three quatro
	do
		echo $l
	done >file &&
	git add file &&
	test_tick &&
	git commit -m $side &&
	test_must_fail git merge $branch &&
	for l in $one three four
	do
		echo $l
	done >file &&
	git add file &&
	test_tick &&
	git commit -m "merge $branch into $side"
}

verify_helper () {
	it=$1 &&

	# Ignore lines that were removed only from the other parent
	sed -e '
		1,/^@@@/d
		/^ -/d
		s/^\(.\)./\1/
	' "$it" >"$it.actual.1" &&
	sed -e '
		1,/^@@@/d
		/^- /d
		s/^.\(.\)/\1/
	' "$it" >"$it.actual.2" &&

	git diff "$it^" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.1" &&
	test_cmp "$it.expect.1" "$it.actual.1" &&

	git diff "$it^2" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.2" &&
	test_cmp "$it.expect.2" "$it.actual.2"
}

test_expect_success setup '
	>file &&
	git add file &&
	test_tick &&
	git commit -m initial &&

	git branch withone &&
	git branch sansone &&

	git checkout withone &&
	setup_helper one withone sidewithone &&

	git checkout sansone &&
	setup_helper "" sansone sidesansone
'

test_expect_success 'check combined output (1)' '
	git show sidewithone -- >sidewithone &&
	verify_helper sidewithone
'

test_expect_success 'check combined output (2)' '
	git show sidesansone -- >sidesansone &&
	verify_helper sidesansone
'

test_expect_success 'diagnose truncated file' '
	>file &&
	git add file &&
	git commit --amend -C HEAD &&
	git show >out &&
	grep "diff --cc file" out
'

test_expect_success 'setup for --cc --raw' '
	blob=$(echo file | git hash-object --stdin -w) &&
	base_tree=$(echo "100644 blob $blob	file" | git mktree) &&
	trees= &&
	for i in $(test_seq 1 40)
	do
		blob=$(echo file$i | git hash-object --stdin -w) &&
		trees="$trees$(echo "100644 blob $blob	file" | git mktree)$LF"
	done
'

test_expect_success 'check --cc --raw with four trees' '
	four_trees=$(echo "$trees" | sed -e 4q) &&
	git diff --cc --raw $four_trees $base_tree >out &&
	# Check for four leading colons in the output:
	grep "^::::[^:]" out
'

test_expect_success 'check --cc --raw with forty trees' '
	git diff --cc --raw $trees $base_tree >out &&
	# Check for forty leading colons in the output:
	grep "^::::::::::::::::::::::::::::::::::::::::[^:]" out
'

test_expect_success 'setup combined ignore spaces' '
	git checkout master &&
	>test &&
	git add test &&
	git commit -m initial &&

	tr -d Q <<-\EOF >test &&
	always coalesce
	eol space coalesce Q
	space  change coalesce
	all spa ces coalesce
	eol spaces Q
	space  change
	all spa ces
	EOF
	git commit -m "test space change" -a &&

	git checkout -b side HEAD^ &&
	tr -d Q <<-\EOF >test &&
	always coalesce
	eol space coalesce
	space change coalesce
	all spaces coalesce
	eol spaces
	space change
	all spaces
	EOF
	git commit -m "test other space changes" -a &&

	test_must_fail git merge master &&
	tr -d Q <<-\EOF >test &&
	eol spaces Q
	space  change
	all spa ces
	EOF
	git commit -m merged -a
'

test_expect_success 'check combined output (no ignore space)' '
	git show >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	--always coalesce
	- eol space coalesce
	- space change coalesce
	- all spaces coalesce
	- eol spaces
	- space change
	- all spaces
	 -eol space coalesce Q
	 -space  change coalesce
	 -all spa ces coalesce
	+ eol spaces Q
	+ space  change
	+ all spa ces
	EOF
	compare_diff_patch expected actual
'

test_expect_success 'check combined output (ignore space at eol)' '
	git show --ignore-space-at-eol >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	--always coalesce
	--eol space coalesce
	- space change coalesce
	- all spaces coalesce
	 -space  change coalesce
	 -all spa ces coalesce
	  eol spaces Q
	- space change
	- all spaces
	+ space  change
	+ all spa ces
	EOF
	compare_diff_patch expected actual
'

test_expect_success 'check combined output (ignore space change)' '
	git show -b >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	--always coalesce
	--eol space coalesce
	--space change coalesce
	- all spaces coalesce
	 -all spa ces coalesce
	  eol spaces Q
	  space  change
	- all spaces
	+ all spa ces
	EOF
	compare_diff_patch expected actual
'

test_expect_success 'check combined output (ignore all spaces)' '
	git show -w >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	--always coalesce
	--eol space coalesce
	--space change coalesce
	--all spaces coalesce
	  eol spaces Q
	  space  change
	  all spa ces
	EOF
	compare_diff_patch expected actual
'

test_expect_success 'combine diff coalesce simple' '
	>test &&
	git add test &&
	git commit -m initial &&
	test_seq 4 >test &&
	git commit -a -m empty1 &&
	git branch side1 &&
	git checkout HEAD^ &&
	test_seq 5 >test &&
	git commit -a -m empty2 &&
	test_must_fail git merge side1 &&
	>test &&
	git commit -a -m merge &&
	git show >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	--1
	--2
	--3
	--4
	- 5
	EOF
	compare_diff_patch expected actual
'

test_expect_success 'combine diff coalesce tricky' '
	>test &&
	git add test &&
	git commit -m initial --allow-empty &&
	cat <<-\EOF >test &&
	3
	1
	2
	3
	4
	EOF
	git commit -a -m empty1 &&
	git branch -f side1 &&
	git checkout HEAD^ &&
	cat <<-\EOF >test &&
	1
	3
	5
	4
	EOF
	git commit -a -m empty2 &&
	git branch -f side2 &&
	test_must_fail git merge side1 &&
	>test &&
	git commit -a -m merge &&
	git show >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	 -3
	--1
	 -2
	--3
	- 5
	--4
	EOF
	compare_diff_patch expected actual &&
	git checkout -f side1 &&
	test_must_fail git merge side2 &&
	>test &&
	git commit -a -m merge &&
	git show >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	- 3
	--1
	- 2
	--3
	 -5
	--4
	EOF
	compare_diff_patch expected actual
'

test_expect_failure 'combine diff coalesce three parents' '
	>test &&
	git add test &&
	git commit -m initial --allow-empty &&
	cat <<-\EOF >test &&
	3
	1
	2
	3
	4
	EOF
	git commit -a -m empty1 &&
	git checkout -B side1 &&
	git checkout HEAD^ &&
	cat <<-\EOF >test &&
	1
	3
	7
	5
	4
	EOF
	git commit -a -m empty2 &&
	git branch -f side2 &&
	git checkout HEAD^ &&
	cat <<-\EOF >test &&
	3
	1
	6
	5
	4
	EOF
	git commit -a -m empty3 &&
	>test &&
	git add test &&
	TREE=$(git write-tree) &&
	COMMIT=$(git commit-tree -p HEAD -p side1 -p side2 -m merge $TREE) &&
	git show $COMMIT >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	-- 3
	---1
	-  6
	 - 2
	 --3
	  -7
	- -5
	---4
	EOF
	compare_diff_patch expected actual
'

# Test for a bug reported at
# https://lore.kernel.org/git/20130515143508.GO25742@login.drsnuggles.stderr.nl/
# where a delete lines were missing from combined diff output when they
# occurred exactly before the context lines of a later change.
test_expect_success 'combine diff missing delete bug' '
	git commit -m initial --allow-empty &&
	cat <<-\EOF >test &&
	1
	2
	3
	4
	EOF
	git add test &&
	git commit -a -m side1 &&
	git checkout -B side1 &&
	git checkout HEAD^ &&
	cat <<-\EOF >test &&
	0
	1
	2
	3
	4modified
	EOF
	git add test &&
	git commit -m side2 &&
	git branch -f side2 &&
	test_must_fail git merge --no-commit side1 &&
	cat <<-\EOF >test &&
	1
	2
	3
	4modified
	EOF
	git add test &&
	git commit -a -m merge &&
	git diff-tree -c -p HEAD >actual.tmp &&
	sed -e "1,/^@@@/d" < actual.tmp >actual &&
	tr -d Q <<-\EOF >expected &&
	- 0
	  1
	  2
	  3
	 -4
	 +4modified
	EOF
	compare_diff_patch expected actual
'

test_expect_success 'combine diff gets tree sorting right' '
	# create a directory and a file that sort differently in trees
	# versus byte-wise (implied "/" sorts after ".")
	git checkout -f master &&
	mkdir foo &&
	echo base >foo/one &&
	echo base >foo/two &&
	echo base >foo.ext &&
	git add foo foo.ext &&
	git commit -m base &&

	# one side modifies a file in the directory, along with the root
	# file...
	echo master >foo/one &&
	echo master >foo.ext &&
	git commit -a -m master &&

	# the other side modifies the other file in the directory
	git checkout -b other HEAD^ &&
	echo other >foo/two &&
	git commit -a -m other &&

	# And now we merge. The files in the subdirectory will resolve cleanly,
	# meaning that a combined diff will not find them interesting. But it
	# will find the tree itself interesting, because it had to be merged.
	git checkout master &&
	git merge other &&

	printf "MM\tfoo\n" >expect &&
	git diff-tree -c --name-status -t HEAD >actual.tmp &&
	sed 1d <actual.tmp >actual &&
	test_cmp expect actual
'

test_expect_success 'setup for --combined-all-paths' '
	git branch side1c &&
	git branch side2c &&
	git checkout side1c &&
	test_seq 1 10 >filename-side1c &&
	side1cf=$(git hash-object filename-side1c) &&
	git add filename-side1c &&
	git commit -m with &&
	git checkout side2c &&
	test_seq 1 9 >filename-side2c &&
	echo ten >>filename-side2c &&
	side2cf=$(git hash-object filename-side2c) &&
	git add filename-side2c &&
	git commit -m iam &&
	git checkout -b mergery side1c &&
	git merge --no-commit side2c &&
	git rm filename-side1c &&
	echo eleven >>filename-side2c &&
	git mv filename-side2c filename-merged &&
	mergedf=$(git hash-object filename-merged) &&
	git add filename-merged &&
	git commit
'

test_expect_success '--combined-all-paths and --raw' '
	cat <<-EOF >expect &&
	::100644 100644 100644 $side1cf $side2cf $mergedf RR	filename-side1c	filename-side2c	filename-merged
	EOF
	git diff-tree -c -M --raw --combined-all-paths HEAD >actual.tmp &&
	sed 1d <actual.tmp >actual &&
	test_cmp expect actual
'

test_expect_success '--combined-all-paths and --cc' '
	cat <<-\EOF >expect &&
	--- a/filename-side1c
	--- a/filename-side2c
	+++ b/filename-merged
	EOF
	git diff-tree --cc -M --combined-all-paths HEAD >actual.tmp &&
	grep ^[-+][-+][-+] <actual.tmp >actual &&
	test_cmp expect actual
'

test_expect_success FUNNYNAMES 'setup for --combined-all-paths with funny names' '
	git branch side1d &&
	git branch side2d &&
	git checkout side1d &&
	test_seq 1 10 >"$(printf "file\twith\ttabs")" &&
	git add file* &&
	side1df=$(git hash-object *tabs) &&
	git commit -m with &&
	git checkout side2d &&
	test_seq 1 9 >"$(printf "i\tam\ttabbed")" &&
	echo ten >>"$(printf "i\tam\ttabbed")" &&
	git add *tabbed &&
	side2df=$(git hash-object *tabbed) &&
	git commit -m iam &&
	git checkout -b funny-names-mergery side1d &&
	git merge --no-commit side2d &&
	git rm *tabs &&
	echo eleven >>"$(printf "i\tam\ttabbed")" &&
	git mv "$(printf "i\tam\ttabbed")" "$(printf "fickle\tnaming")" &&
	git add fickle* &&
	headf=$(git hash-object fickle*) &&
	git commit &&
	head=$(git rev-parse HEAD)
'

test_expect_success FUNNYNAMES '--combined-all-paths and --raw and funny names' '
	cat <<-EOF >expect &&
	::100644 100644 100644 $side1df $side2df $headf RR	"file\twith\ttabs"	"i\tam\ttabbed"	"fickle\tnaming"
	EOF
	git diff-tree -c -M --raw --combined-all-paths HEAD >actual.tmp &&
	sed 1d <actual.tmp >actual &&
	test_cmp expect actual
'

test_expect_success FUNNYNAMES '--combined-all-paths and --raw -and -z and funny names' '
	printf "$head\0::100644 100644 100644 $side1df $side2df $headf RR\0file\twith\ttabs\0i\tam\ttabbed\0fickle\tnaming\0" >expect &&
	git diff-tree -c -M --raw --combined-all-paths -z HEAD >actual &&
	test_cmp expect actual
'

test_expect_success FUNNYNAMES '--combined-all-paths and --cc and funny names' '
	cat <<-\EOF >expect &&
	--- "a/file\twith\ttabs"
	--- "a/i\tam\ttabbed"
	+++ "b/fickle\tnaming"
	EOF
	git diff-tree --cc -M --combined-all-paths HEAD >actual.tmp &&
	grep ^[-+][-+][-+] <actual.tmp >actual &&
	test_cmp expect actual
'

test_done