Merge branch 'jk/merge-file-exit-code'
[git/git.git] / t / t7600-merge.sh
1 #!/bin/sh
2 #
3 # Copyright (c) 2007 Lars Hjemli
4 #
5
6 test_description='git merge
7
8 Testing basic merge operations/option parsing.
9
10 ! [c0] commit 0
11 ! [c1] commit 1
12 ! [c2] commit 2
13 ! [c3] commit 3
14 ! [c4] c4
15 ! [c5] c5
16 ! [c6] c6
17 * [master] Merge commit 'c1'
18 --------
19 - [master] Merge commit 'c1'
20 + * [c1] commit 1
21 + [c6] c6
22 + [c5] c5
23 ++ [c4] c4
24 ++++ [c3] commit 3
25 + [c2] commit 2
26 +++++++* [c0] commit 0
27 '
28
29 . ./test-lib.sh
30 . "$TEST_DIRECTORY"/lib-gpg.sh
31
32 printf '%s\n' 1 2 3 4 5 6 7 8 9 >file
33 printf '%s\n' '1 X' 2 3 4 5 6 7 8 9 >file.1
34 printf '%s\n' 1 2 3 4 '5 X' 6 7 8 9 >file.5
35 printf '%s\n' 1 2 3 4 5 6 7 8 '9 X' >file.9
36 printf '%s\n' '1 X' 2 3 4 5 6 7 8 9 >result.1
37 printf '%s\n' '1 X' 2 3 4 '5 X' 6 7 8 9 >result.1-5
38 printf '%s\n' '1 X' 2 3 4 '5 X' 6 7 8 '9 X' >result.1-5-9
39 >empty
40
41 create_merge_msgs () {
42 echo "Merge tag 'c2'" >msg.1-5 &&
43 echo "Merge tags 'c2' and 'c3'" >msg.1-5-9 &&
44 {
45 echo "Squashed commit of the following:" &&
46 echo &&
47 git log --no-merges ^HEAD c1
48 } >squash.1 &&
49 {
50 echo "Squashed commit of the following:" &&
51 echo &&
52 git log --no-merges ^HEAD c2
53 } >squash.1-5 &&
54 {
55 echo "Squashed commit of the following:" &&
56 echo &&
57 git log --no-merges ^HEAD c2 c3
58 } >squash.1-5-9 &&
59 : >msg.nologff &&
60 : >msg.nolognoff &&
61 {
62 echo "* tag 'c3':" &&
63 echo " commit 3"
64 } >msg.log
65 }
66
67 verify_merge () {
68 test_cmp "$2" "$1" &&
69 git update-index --refresh &&
70 git diff --exit-code &&
71 if test -n "$3"
72 then
73 git show -s --pretty=tformat:%s HEAD >msg.act &&
74 test_cmp "$3" msg.act
75 fi
76 }
77
78 verify_head () {
79 echo "$1" >head.expected &&
80 git rev-parse HEAD >head.actual &&
81 test_cmp head.expected head.actual
82 }
83
84 verify_parents () {
85 printf '%s\n' "$@" >parents.expected &&
86 >parents.actual &&
87 i=1 &&
88 while test $i -le $#
89 do
90 git rev-parse HEAD^$i >>parents.actual &&
91 i=$(expr $i + 1) ||
92 return 1
93 done &&
94 test_must_fail git rev-parse --verify "HEAD^$i" &&
95 test_cmp parents.expected parents.actual
96 }
97
98 verify_mergeheads () {
99 printf '%s\n' "$@" >mergehead.expected &&
100 while read sha1 rest
101 do
102 git rev-parse $sha1
103 done <.git/MERGE_HEAD >mergehead.actual &&
104 test_cmp mergehead.expected mergehead.actual
105 }
106
107 verify_no_mergehead () {
108 ! test -e .git/MERGE_HEAD
109 }
110
111 test_expect_success 'setup' '
112 git add file &&
113 test_tick &&
114 git commit -m "commit 0" &&
115 git tag c0 &&
116 c0=$(git rev-parse HEAD) &&
117 cp file.1 file &&
118 git add file &&
119 test_tick &&
120 git commit -m "commit 1" &&
121 git tag c1 &&
122 c1=$(git rev-parse HEAD) &&
123 git reset --hard "$c0" &&
124 cp file.5 file &&
125 git add file &&
126 test_tick &&
127 git commit -m "commit 2" &&
128 git tag c2 &&
129 c2=$(git rev-parse HEAD) &&
130 git reset --hard "$c0" &&
131 cp file.9 file &&
132 git add file &&
133 test_tick &&
134 git commit -m "commit 3" &&
135 git tag c3 &&
136 c3=$(git rev-parse HEAD) &&
137 git reset --hard "$c0" &&
138 create_merge_msgs
139 '
140
141 test_debug 'git log --graph --decorate --oneline --all'
142
143 test_expect_success 'test option parsing' '
144 test_must_fail git merge -$ c1 &&
145 test_must_fail git merge --no-such c1 &&
146 test_must_fail git merge -s foobar c1 &&
147 test_must_fail git merge -s=foobar c1 &&
148 test_must_fail git merge -m &&
149 test_must_fail git merge
150 '
151
152 test_expect_success 'merge -h with invalid index' '
153 mkdir broken &&
154 (
155 cd broken &&
156 git init &&
157 >.git/index &&
158 test_expect_code 129 git merge -h 2>usage
159 ) &&
160 test_i18ngrep "[Uu]sage: git merge" broken/usage
161 '
162
163 test_expect_success 'reject non-strategy with a git-merge-foo name' '
164 test_must_fail git merge -s index c1
165 '
166
167 test_expect_success 'merge c0 with c1' '
168 echo "OBJID HEAD@{0}: merge c1: Fast-forward" >reflog.expected &&
169
170 git reset --hard c0 &&
171 git merge c1 &&
172 verify_merge file result.1 &&
173 verify_head "$c1" &&
174
175 git reflog -1 >reflog.actual &&
176 sed "s/$_x05[0-9a-f]*/OBJID/g" reflog.actual >reflog.fuzzy &&
177 test_cmp reflog.expected reflog.fuzzy
178 '
179
180 test_debug 'git log --graph --decorate --oneline --all'
181
182 test_expect_success 'merge c0 with c1 with --ff-only' '
183 git reset --hard c0 &&
184 git merge --ff-only c1 &&
185 git merge --ff-only HEAD c0 c1 &&
186 verify_merge file result.1 &&
187 verify_head "$c1"
188 '
189
190 test_debug 'git log --graph --decorate --oneline --all'
191
192 test_expect_success 'merge from unborn branch' '
193 git checkout -f master &&
194 test_might_fail git branch -D kid &&
195
196 echo "OBJID HEAD@{0}: initial pull" >reflog.expected &&
197
198 git checkout --orphan kid &&
199 test_when_finished "git checkout -f master" &&
200 git rm -fr . &&
201 test_tick &&
202 git merge --ff-only c1 &&
203 verify_merge file result.1 &&
204 verify_head "$c1" &&
205
206 git reflog -1 >reflog.actual &&
207 sed "s/$_x05[0-9a-f][0-9a-f]/OBJID/g" reflog.actual >reflog.fuzzy &&
208 test_cmp reflog.expected reflog.fuzzy
209 '
210
211 test_debug 'git log --graph --decorate --oneline --all'
212
213 test_expect_success 'merge c1 with c2' '
214 git reset --hard c1 &&
215 test_tick &&
216 git merge c2 &&
217 verify_merge file result.1-5 msg.1-5 &&
218 verify_parents $c1 $c2
219 '
220
221 test_debug 'git log --graph --decorate --oneline --all'
222
223 test_expect_success 'merge c1 with c2 and c3' '
224 git reset --hard c1 &&
225 test_tick &&
226 git merge c2 c3 &&
227 verify_merge file result.1-5-9 msg.1-5-9 &&
228 verify_parents $c1 $c2 $c3
229 '
230
231 test_debug 'git log --graph --decorate --oneline --all'
232
233 test_expect_success 'merges with --ff-only' '
234 git reset --hard c1 &&
235 test_tick &&
236 test_must_fail git merge --ff-only c2 &&
237 test_must_fail git merge --ff-only c3 &&
238 test_must_fail git merge --ff-only c2 c3 &&
239 git reset --hard c0 &&
240 git merge c3 &&
241 verify_head $c3
242 '
243
244 test_expect_success 'merges with merge.ff=only' '
245 git reset --hard c1 &&
246 test_tick &&
247 test_config merge.ff "only" &&
248 test_must_fail git merge c2 &&
249 test_must_fail git merge c3 &&
250 test_must_fail git merge c2 c3 &&
251 git reset --hard c0 &&
252 git merge c3 &&
253 verify_head $c3
254 '
255
256 test_expect_success 'merge c0 with c1 (no-commit)' '
257 git reset --hard c0 &&
258 git merge --no-commit c1 &&
259 verify_merge file result.1 &&
260 verify_head $c1
261 '
262
263 test_debug 'git log --graph --decorate --oneline --all'
264
265 test_expect_success 'merge c1 with c2 (no-commit)' '
266 git reset --hard c1 &&
267 git merge --no-commit c2 &&
268 verify_merge file result.1-5 &&
269 verify_head $c1 &&
270 verify_mergeheads $c2
271 '
272
273 test_debug 'git log --graph --decorate --oneline --all'
274
275 test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
276 git reset --hard c1 &&
277 git merge --no-commit c2 c3 &&
278 verify_merge file result.1-5-9 &&
279 verify_head $c1 &&
280 verify_mergeheads $c2 $c3
281 '
282
283 test_debug 'git log --graph --decorate --oneline --all'
284
285 test_expect_success 'merge c0 with c1 (squash)' '
286 git reset --hard c0 &&
287 git merge --squash c1 &&
288 verify_merge file result.1 &&
289 verify_head $c0 &&
290 verify_no_mergehead &&
291 test_cmp squash.1 .git/SQUASH_MSG
292 '
293
294 test_debug 'git log --graph --decorate --oneline --all'
295
296 test_expect_success 'merge c0 with c1 (squash, ff-only)' '
297 git reset --hard c0 &&
298 git merge --squash --ff-only c1 &&
299 verify_merge file result.1 &&
300 verify_head $c0 &&
301 verify_no_mergehead &&
302 test_cmp squash.1 .git/SQUASH_MSG
303 '
304
305 test_debug 'git log --graph --decorate --oneline --all'
306
307 test_expect_success 'merge c1 with c2 (squash)' '
308 git reset --hard c1 &&
309 git merge --squash c2 &&
310 verify_merge file result.1-5 &&
311 verify_head $c1 &&
312 verify_no_mergehead &&
313 test_cmp squash.1-5 .git/SQUASH_MSG
314 '
315
316 test_debug 'git log --graph --decorate --oneline --all'
317
318 test_expect_success 'unsuccessful merge of c1 with c2 (squash, ff-only)' '
319 git reset --hard c1 &&
320 test_must_fail git merge --squash --ff-only c2
321 '
322
323 test_debug 'git log --graph --decorate --oneline --all'
324
325 test_expect_success 'merge c1 with c2 and c3 (squash)' '
326 git reset --hard c1 &&
327 git merge --squash c2 c3 &&
328 verify_merge file result.1-5-9 &&
329 verify_head $c1 &&
330 verify_no_mergehead &&
331 test_cmp squash.1-5-9 .git/SQUASH_MSG
332 '
333
334 test_debug 'git log --graph --decorate --oneline --all'
335
336 test_expect_success 'merge c1 with c2 (no-commit in config)' '
337 git reset --hard c1 &&
338 test_config branch.master.mergeoptions "--no-commit" &&
339 git merge c2 &&
340 verify_merge file result.1-5 &&
341 verify_head $c1 &&
342 verify_mergeheads $c2
343 '
344
345 test_debug 'git log --graph --decorate --oneline --all'
346
347 test_expect_success 'merge c1 with c2 (log in config)' '
348 git reset --hard c1 &&
349 git merge --log c2 &&
350 git show -s --pretty=tformat:%s%n%b >expect &&
351
352 test_config branch.master.mergeoptions "--log" &&
353 git reset --hard c1 &&
354 git merge c2 &&
355 git show -s --pretty=tformat:%s%n%b >actual &&
356
357 test_cmp expect actual
358 '
359
360 test_expect_success 'merge c1 with c2 (log in config gets overridden)' '
361 git reset --hard c1 &&
362 git merge c2 &&
363 git show -s --pretty=tformat:%s%n%b >expect &&
364
365 test_config branch.master.mergeoptions "--no-log" &&
366 test_config merge.log "true" &&
367 git reset --hard c1 &&
368 git merge c2 &&
369 git show -s --pretty=tformat:%s%n%b >actual &&
370
371 test_cmp expect actual
372 '
373
374 test_expect_success 'merge c1 with c2 (squash in config)' '
375 git reset --hard c1 &&
376 test_config branch.master.mergeoptions "--squash" &&
377 git merge c2 &&
378 verify_merge file result.1-5 &&
379 verify_head $c1 &&
380 verify_no_mergehead &&
381 test_cmp squash.1-5 .git/SQUASH_MSG
382 '
383
384 test_debug 'git log --graph --decorate --oneline --all'
385
386 test_expect_success 'override config option -n with --summary' '
387 git reset --hard c1 &&
388 test_config branch.master.mergeoptions "-n" &&
389 test_tick &&
390 git merge --summary c2 >diffstat.txt &&
391 verify_merge file result.1-5 msg.1-5 &&
392 verify_parents $c1 $c2 &&
393 if ! grep "^ file | *2 +-$" diffstat.txt
394 then
395 echo "[OOPS] diffstat was not generated with --summary"
396 false
397 fi
398 '
399
400 test_expect_success 'override config option -n with --stat' '
401 git reset --hard c1 &&
402 test_config branch.master.mergeoptions "-n" &&
403 test_tick &&
404 git merge --stat c2 >diffstat.txt &&
405 verify_merge file result.1-5 msg.1-5 &&
406 verify_parents $c1 $c2 &&
407 if ! grep "^ file | *2 +-$" diffstat.txt
408 then
409 echo "[OOPS] diffstat was not generated with --stat"
410 false
411 fi
412 '
413
414 test_debug 'git log --graph --decorate --oneline --all'
415
416 test_expect_success 'override config option --stat' '
417 git reset --hard c1 &&
418 test_config branch.master.mergeoptions "--stat" &&
419 test_tick &&
420 git merge -n c2 >diffstat.txt &&
421 verify_merge file result.1-5 msg.1-5 &&
422 verify_parents $c1 $c2 &&
423 if grep "^ file | *2 +-$" diffstat.txt
424 then
425 echo "[OOPS] diffstat was generated"
426 false
427 fi
428 '
429
430 test_debug 'git log --graph --decorate --oneline --all'
431
432 test_expect_success 'merge c1 with c2 (override --no-commit)' '
433 git reset --hard c1 &&
434 test_config branch.master.mergeoptions "--no-commit" &&
435 test_tick &&
436 git merge --commit c2 &&
437 verify_merge file result.1-5 msg.1-5 &&
438 verify_parents $c1 $c2
439 '
440
441 test_debug 'git log --graph --decorate --oneline --all'
442
443 test_expect_success 'merge c1 with c2 (override --squash)' '
444 git reset --hard c1 &&
445 test_config branch.master.mergeoptions "--squash" &&
446 test_tick &&
447 git merge --no-squash c2 &&
448 verify_merge file result.1-5 msg.1-5 &&
449 verify_parents $c1 $c2
450 '
451
452 test_debug 'git log --graph --decorate --oneline --all'
453
454 test_expect_success 'merge c0 with c1 (no-ff)' '
455 git reset --hard c0 &&
456 test_tick &&
457 git merge --no-ff c1 &&
458 verify_merge file result.1 &&
459 verify_parents $c0 $c1
460 '
461
462 test_debug 'git log --graph --decorate --oneline --all'
463
464 test_expect_success 'merge c0 with c1 (merge.ff=false)' '
465 git reset --hard c0 &&
466 test_config merge.ff "false" &&
467 test_tick &&
468 git merge c1 &&
469 verify_merge file result.1 &&
470 verify_parents $c0 $c1
471 '
472 test_debug 'git log --graph --decorate --oneline --all'
473
474 test_expect_success 'combine branch.master.mergeoptions with merge.ff' '
475 git reset --hard c0 &&
476 test_config branch.master.mergeoptions "--ff" &&
477 test_config merge.ff "false" &&
478 test_tick &&
479 git merge c1 &&
480 verify_merge file result.1 &&
481 verify_parents "$c0"
482 '
483
484 test_expect_success 'tolerate unknown values for merge.ff' '
485 git reset --hard c0 &&
486 test_config merge.ff "something-new" &&
487 test_tick &&
488 git merge c1 2>message &&
489 verify_head "$c1" &&
490 test_cmp empty message
491 '
492
493 test_expect_success 'combining --squash and --no-ff is refused' '
494 git reset --hard c0 &&
495 test_must_fail git merge --squash --no-ff c1 &&
496 test_must_fail git merge --no-ff --squash c1
497 '
498
499 test_expect_success 'option --ff-only overwrites --no-ff' '
500 git merge --no-ff --ff-only c1 &&
501 test_must_fail git merge --no-ff --ff-only c2
502 '
503
504 test_expect_success 'option --no-ff overrides merge.ff=only config' '
505 git reset --hard c0 &&
506 test_config merge.ff only &&
507 git merge --no-ff c1
508 '
509
510 test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
511 git reset --hard c0 &&
512 test_config branch.master.mergeoptions "--no-ff" &&
513 git merge --ff c1 &&
514 verify_merge file result.1 &&
515 verify_head $c1
516 '
517
518 test_expect_success 'merge log message' '
519 git reset --hard c0 &&
520 git merge --no-log c2 &&
521 git show -s --pretty=format:%b HEAD >msg.act &&
522 test_cmp msg.nologff msg.act &&
523
524 git reset --hard c0 &&
525 test_config branch.master.mergeoptions "--no-ff" &&
526 git merge --no-log c2 &&
527 git show -s --pretty=format:%b HEAD >msg.act &&
528 test_cmp msg.nolognoff msg.act &&
529
530 git merge --log c3 &&
531 git show -s --pretty=format:%b HEAD >msg.act &&
532 test_cmp msg.log msg.act &&
533
534 git reset --hard HEAD^ &&
535 test_config merge.log "yes" &&
536 git merge c3 &&
537 git show -s --pretty=format:%b HEAD >msg.act &&
538 test_cmp msg.log msg.act
539 '
540
541 test_debug 'git log --graph --decorate --oneline --all'
542
543 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
544 git reset --hard c1 &&
545 test_tick &&
546 git merge c0 c2 c0 c1 &&
547 verify_merge file result.1-5 &&
548 verify_parents $c1 $c2
549 '
550
551 test_debug 'git log --graph --decorate --oneline --all'
552
553 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
554 git reset --hard c1 &&
555 test_tick &&
556 git merge c0 c2 c0 c1 &&
557 verify_merge file result.1-5 &&
558 verify_parents $c1 $c2
559 '
560
561 test_debug 'git log --graph --decorate --oneline --all'
562
563 test_expect_success 'merge c1 with c1 and c2' '
564 git reset --hard c1 &&
565 test_tick &&
566 git merge c1 c2 &&
567 verify_merge file result.1-5 &&
568 verify_parents $c1 $c2
569 '
570
571 test_debug 'git log --graph --decorate --oneline --all'
572
573 test_expect_success 'merge fast-forward in a dirty tree' '
574 git reset --hard c0 &&
575 mv file file1 &&
576 cat file1 >file &&
577 rm -f file1 &&
578 git merge c2
579 '
580
581 test_debug 'git log --graph --decorate --oneline --all'
582
583 test_expect_success 'in-index merge' '
584 git reset --hard c0 &&
585 git merge --no-ff -s resolve c1 >out &&
586 test_i18ngrep "Wonderful." out &&
587 verify_parents $c0 $c1
588 '
589
590 test_debug 'git log --graph --decorate --oneline --all'
591
592 test_expect_success 'refresh the index before merging' '
593 git reset --hard c1 &&
594 cp file file.n && mv -f file.n file &&
595 git merge c3
596 '
597
598 cat >expected.branch <<\EOF
599 Merge branch 'c5-branch' (early part)
600 EOF
601 cat >expected.tag <<\EOF
602 Merge commit 'c5~1'
603 EOF
604
605 test_expect_success 'merge early part of c2' '
606 git reset --hard c3 &&
607 echo c4 >c4.c &&
608 git add c4.c &&
609 git commit -m c4 &&
610 git tag c4 &&
611 echo c5 >c5.c &&
612 git add c5.c &&
613 git commit -m c5 &&
614 git tag c5 &&
615 git reset --hard c3 &&
616 echo c6 >c6.c &&
617 git add c6.c &&
618 git commit -m c6 &&
619 git tag c6 &&
620 git branch -f c5-branch c5 &&
621 git merge c5-branch~1 &&
622 git show -s --pretty=tformat:%s HEAD >actual.branch &&
623 git reset --keep HEAD^ &&
624 git merge c5~1 &&
625 git show -s --pretty=tformat:%s HEAD >actual.tag &&
626 test_cmp expected.branch actual.branch &&
627 test_cmp expected.tag actual.tag
628 '
629
630 test_debug 'git log --graph --decorate --oneline --all'
631
632 test_expect_success 'merge --no-ff --no-commit && commit' '
633 git reset --hard c0 &&
634 git merge --no-ff --no-commit c1 &&
635 EDITOR=: git commit &&
636 verify_parents $c0 $c1
637 '
638
639 test_debug 'git log --graph --decorate --oneline --all'
640
641 test_expect_success 'amending no-ff merge commit' '
642 EDITOR=: git commit --amend &&
643 verify_parents $c0 $c1
644 '
645
646 test_debug 'git log --graph --decorate --oneline --all'
647
648 cat >editor <<\EOF
649 #!/bin/sh
650 # Add a new message string that was not in the template
651 (
652 echo "Merge work done on the side branch c1"
653 echo
654 cat <"$1"
655 ) >"$1.tmp" && mv "$1.tmp" "$1"
656 # strip comments and blank lines from end of message
657 sed -e '/^#/d' < "$1" | sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' > expected
658 EOF
659 chmod 755 editor
660
661 test_expect_success 'merge --no-ff --edit' '
662 git reset --hard c0 &&
663 EDITOR=./editor git merge --no-ff --edit c1 &&
664 verify_parents $c0 $c1 &&
665 git cat-file commit HEAD >raw &&
666 grep "work done on the side branch" raw &&
667 sed "1,/^$/d" >actual raw &&
668 test_cmp actual expected
669 '
670
671 test_expect_success GPG 'merge --ff-only tag' '
672 git reset --hard c0 &&
673 git commit --allow-empty -m "A newer commit" &&
674 git tag -s -m "A newer commit" signed &&
675 git reset --hard c0 &&
676
677 git merge --ff-only signed &&
678 git rev-parse signed^0 >expect &&
679 git rev-parse HEAD >actual &&
680 test_cmp actual expect
681 '
682
683 test_expect_success GPG 'merge --no-edit tag should skip editor' '
684 git reset --hard c0 &&
685 git commit --allow-empty -m "A newer commit" &&
686 git tag -f -s -m "A newer commit" signed &&
687 git reset --hard c0 &&
688
689 EDITOR=false git merge --no-edit signed &&
690 git rev-parse signed^0 >expect &&
691 git rev-parse HEAD^2 >actual &&
692 test_cmp actual expect
693 '
694
695 test_expect_success 'set up mod-256 conflict scenario' '
696 # 256 near-identical stanzas...
697 for i in $(test_seq 1 256); do
698 for j in 1 2 3 4 5; do
699 echo $i-$j
700 done
701 done >file &&
702 git add file &&
703 git commit -m base &&
704
705 # one side changes the first line of each to "master"
706 sed s/-1/-master/ <file >tmp &&
707 mv tmp file &&
708 git commit -am master &&
709
710 # and the other to "side"; merging the two will
711 # yield 256 separate conflicts
712 git checkout -b side HEAD^ &&
713 sed s/-1/-side/ <file >tmp &&
714 mv tmp file &&
715 git commit -am side
716 '
717
718 test_expect_success 'merge detects mod-256 conflicts (recursive)' '
719 git reset --hard &&
720 test_must_fail git merge -s recursive master
721 '
722
723 test_expect_success 'merge detects mod-256 conflicts (resolve)' '
724 git reset --hard &&
725 test_must_fail git merge -s resolve master
726 '
727
728 test_done