3 # Copyright (c) 2006 Johannes E. Schindelin
6 test_description='git rerere
12 ! [second] prefer first over second
19 - [second] prefer first over second
22 ++++++ [master] initial
27 test_expect_success 'setup' '
32 Whether '\''tis nobler in the mind to suffer
33 The slings and arrows of outrageous fortune,
34 Or to take arms against a sea of troubles,
35 And by opposing end them? To die: to sleep;
36 No more; and by a sleep to say we end
37 The heart-ache and the thousand natural shocks
38 That flesh is heir to, '\''tis a consummation
39 Devoutly to be wish'\''d.
44 git commit -q -a -m initial &&
50 To sleep: perchance to dream: ay, there'\''s the rub;
51 For in that sleep of death what dreams may come
52 When we have shuffled off this mortal coil,
53 Must give us pause: there'\''s the respect
54 That makes calamity of so long life;
57 git checkout -b first &&
59 git commit -q -a -m first &&
61 git checkout -b second master &&
63 sed -e "s/To die, t/To die! T/" -e "s/Some title/Some Title/" >a1 &&
64 echo "* END *" >>a1 &&
66 git commit -q -a -m second
69 test_expect_success 'nothing recorded without rerere' '
70 rm -rf .git/rr-cache &&
71 git config rerere.enabled false &&
72 test_must_fail git merge first &&
73 ! test -d .git/rr-cache
76 test_expect_success 'activate rerere, old style (conflicting merge)' '
78 mkdir .git/rr-cache &&
79 test_might_fail git config --unset rerere.enabled &&
80 test_must_fail git merge first &&
82 sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
83 rr=.git/rr-cache/$sha1 &&
84 grep "^=======\$" $rr/preimage &&
85 ! test -f $rr/postimage &&
86 ! test -f $rr/thisimage
89 test_expect_success 'rerere.enabled works, too' '
90 rm -rf .git/rr-cache &&
91 git config rerere.enabled true &&
93 test_must_fail git merge first &&
95 sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
96 rr=.git/rr-cache/$sha1 &&
97 grep ^=======$ $rr/preimage
100 test_expect_success 'set up rr-cache' '
101 rm -rf .git/rr-cache &&
102 git config rerere.enabled true &&
104 test_must_fail git merge first &&
105 sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
106 rr=.git/rr-cache/$sha1
109 test_expect_success 'rr-cache looks sane' '
110 # no postimage or thisimage yet
111 ! test -f $rr/postimage &&
112 ! test -f $rr/thisimage &&
114 # preimage has right number of lines
115 cnt=$(sed -ne "/^<<<<<<</,/^>>>>>>>/p" $rr/preimage | wc -l) &&
120 test_expect_success 'rerere diff' '
121 git show first:a1 >a1 &&
122 cat >expect <<-\EOF &&
129 Whether '\''tis nobler in the mind to suffer
130 The slings and arrows of outrageous fortune,
132 The heart-ache and the thousand natural shocks
133 That flesh is heir to, '\''tis a consummation
134 Devoutly to be wish'\''d.
144 To sleep: perchance to dream: ay, there'\''s the rub;
145 For in that sleep of death what dreams may come
146 When we have shuffled off this mortal coil,
147 Must give us pause: there'\''s the respect
148 That makes calamity of so long life;
154 git rerere diff >out &&
158 test_expect_success 'rerere status' '
160 git rerere status >out &&
164 test_expect_success 'first postimage wins' '
165 git show first:a1 | sed "s/To die: t/To die! T/" >expect &&
167 git commit -q -a -m "prefer first over second" &&
168 test -f $rr/postimage &&
170 oldmtimepost=$(test-tool chmtime --get -60 $rr/postimage) &&
172 git checkout -b third master &&
173 git show second^:a1 | sed "s/To die: t/To die! T/" >a1 &&
174 git commit -q -a -m third &&
176 test_must_fail git merge first &&
178 ! grep "^=======\$" a1 &&
182 test_expect_success 'rerere updates postimage timestamp' '
183 newmtimepost=$(test-tool chmtime --get $rr/postimage) &&
184 test $oldmtimepost -lt $newmtimepost
187 test_expect_success 'rerere clear' '
188 mv $rr/postimage .git/post-saved &&
189 echo "$sha1 a1" | perl -pe "y/\012/\000/" >.git/MERGE_RR &&
194 test_expect_success 'leftover directory' '
197 test_must_fail git merge first &&
201 test_expect_success 'missing preimage' '
204 cp .git/post-saved $rr/postimage &&
205 test_must_fail git merge first &&
209 test_expect_success 'set up for garbage collection tests' '
211 echo Hello >$rr/preimage &&
212 echo World >$rr/postimage &&
214 sha2=$(test_oid deadbeef) &&
215 rr2=.git/rr-cache/$sha2 &&
217 echo Hello >$rr2/preimage &&
219 almost_15_days_ago=$((60-15*86400)) &&
220 just_over_15_days_ago=$((-1-15*86400)) &&
221 almost_60_days_ago=$((60-60*86400)) &&
222 just_over_60_days_ago=$((-1-60*86400)) &&
224 test-tool chmtime =$just_over_60_days_ago $rr/preimage &&
225 test-tool chmtime =$almost_60_days_ago $rr/postimage &&
226 test-tool chmtime =$almost_15_days_ago $rr2/preimage
229 test_expect_success 'gc preserves young or recently used records' '
231 test -f $rr/preimage &&
232 test -f $rr2/preimage
235 test_expect_success 'old records rest in peace' '
236 test-tool chmtime =$just_over_60_days_ago $rr/postimage &&
237 test-tool chmtime =$just_over_15_days_ago $rr2/preimage &&
239 ! test -f $rr/preimage &&
240 ! test -f $rr2/preimage
243 rerere_gc_custom_expiry_test () {
244 five_days="$1" right_now="$2"
245 test_expect_success "rerere gc with custom expiry ($five_days, $right_now)" '
246 rm -fr .git/rr-cache &&
247 rr=.git/rr-cache/$ZERO_OID &&
252 two_days_ago=$((-2*86400)) &&
253 test-tool chmtime =$two_days_ago "$rr/preimage" &&
254 test-tool chmtime =$two_days_ago "$rr/postimage" &&
256 find .git/rr-cache -type f | sort >original &&
258 git -c "gc.rerereresolved=$five_days" \
259 -c "gc.rerereunresolved=$five_days" rerere gc &&
260 find .git/rr-cache -type f | sort >actual &&
261 test_cmp original actual &&
263 git -c "gc.rerereresolved=$five_days" \
264 -c "gc.rerereunresolved=$right_now" rerere gc &&
265 find .git/rr-cache -type f | sort >actual &&
266 test_cmp original actual &&
268 git -c "gc.rerereresolved=$right_now" \
269 -c "gc.rerereunresolved=$right_now" rerere gc &&
270 find .git/rr-cache -type f | sort >actual &&
271 test_must_be_empty actual
275 rerere_gc_custom_expiry_test 5 0
277 rerere_gc_custom_expiry_test 5.days.ago now
279 test_expect_success 'setup: file2 added differently in two branches' '
282 git checkout -b fourth &&
286 git commit -m version1 &&
288 git checkout third &&
292 git commit -m version2 &&
294 test_must_fail git merge fourth &&
297 git commit -m resolution
300 test_expect_success 'resolution was recorded properly' '
301 echo Cello >expected &&
303 git reset --hard HEAD~2 &&
304 git checkout -b fifth &&
309 git commit -m version1 &&
311 git checkout third &&
315 git commit -m version2 &&
318 test_must_fail git merge fifth &&
319 test_cmp expected file3 &&
320 test_must_fail git update-index --refresh
323 test_expect_success 'rerere.autoupdate' '
324 git config rerere.autoupdate true &&
326 git checkout version2 &&
327 test_must_fail git merge fifth &&
328 git update-index --refresh
331 test_expect_success 'merge --rerere-autoupdate' '
332 test_might_fail git config --unset rerere.autoupdate &&
334 git checkout version2 &&
335 test_must_fail git merge --rerere-autoupdate fifth &&
336 git update-index --refresh
339 test_expect_success 'merge --no-rerere-autoupdate' '
340 headblob=$(git rev-parse version2:file3) &&
341 mergeblob=$(git rev-parse fifth:file3) &&
342 cat >expected <<-EOF &&
343 100644 $headblob 2 file3
344 100644 $mergeblob 3 file3
347 git config rerere.autoupdate true &&
349 git checkout version2 &&
350 test_must_fail git merge --no-rerere-autoupdate fifth &&
351 git ls-files -u >actual &&
352 test_cmp expected actual
355 test_expect_success 'set up an unresolved merge' '
356 headblob=$(git rev-parse version2:file3) &&
357 mergeblob=$(git rev-parse fifth:file3) &&
358 cat >expected.unresolved <<-EOF &&
359 100644 $headblob 2 file3
360 100644 $mergeblob 3 file3
363 test_might_fail git config --unset rerere.autoupdate &&
365 git checkout version2 &&
366 fifth=$(git rev-parse fifth) &&
367 echo "$fifth branch 'fifth' of ." |
368 git fmt-merge-msg >msg &&
369 ancestor=$(git merge-base version2 fifth) &&
370 test_must_fail git merge-recursive "$ancestor" -- HEAD fifth &&
372 git ls-files --stage >failedmerge &&
373 cp file3 file3.conflict &&
375 git ls-files -u >actual &&
376 test_cmp expected.unresolved actual
379 test_expect_success 'explicit rerere' '
380 test_might_fail git config --unset rerere.autoupdate &&
381 git rm -fr --cached . &&
382 git update-index --index-info <failedmerge &&
383 cp file3.conflict file3 &&
384 test_must_fail git update-index --refresh -q &&
387 git ls-files -u >actual &&
388 test_cmp expected.unresolved actual
391 test_expect_success 'explicit rerere with autoupdate' '
392 git config rerere.autoupdate true &&
393 git rm -fr --cached . &&
394 git update-index --index-info <failedmerge &&
395 cp file3.conflict file3 &&
396 test_must_fail git update-index --refresh -q &&
399 git update-index --refresh
402 test_expect_success 'explicit rerere --rerere-autoupdate overrides' '
403 git config rerere.autoupdate false &&
404 git rm -fr --cached . &&
405 git update-index --index-info <failedmerge &&
406 cp file3.conflict file3 &&
408 git ls-files -u >actual1 &&
410 git rm -fr --cached . &&
411 git update-index --index-info <failedmerge &&
412 cp file3.conflict file3 &&
413 git rerere --rerere-autoupdate &&
414 git update-index --refresh &&
416 git rm -fr --cached . &&
417 git update-index --index-info <failedmerge &&
418 cp file3.conflict file3 &&
419 git rerere --rerere-autoupdate --no-rerere-autoupdate &&
420 git ls-files -u >actual2 &&
422 git rm -fr --cached . &&
423 git update-index --index-info <failedmerge &&
424 cp file3.conflict file3 &&
425 git rerere --rerere-autoupdate --no-rerere-autoupdate --rerere-autoupdate &&
426 git update-index --refresh &&
428 test_cmp expected.unresolved actual1 &&
429 test_cmp expected.unresolved actual2
432 test_expect_success 'rerere --no-no-rerere-autoupdate' '
433 git rm -fr --cached . &&
434 git update-index --index-info <failedmerge &&
435 cp file3.conflict file3 &&
436 test_must_fail git rerere --no-no-rerere-autoupdate 2>err &&
437 test_i18ngrep [Uu]sage err &&
438 test_must_fail git update-index --refresh
441 test_expect_success 'rerere -h' '
442 test_must_fail git rerere -h >help &&
443 test_i18ngrep [Uu]sage help
449 cat early && printf "%s\n" "$@" && cat late "$last"
453 find .git/rr-cache/ -type f -name "preimage*" >actual &&
454 test_line_count = "$1" actual &&
455 find .git/rr-cache/ -type f -name "postimage*" >actual &&
456 test_line_count = "$2" actual
459 merge_conflict_resolve () {
461 test_must_fail git merge six.1 &&
462 # Resolution is to replace 7 with 6.1 and 6.2 (i.e. take both)
463 concat_insert short 6.1 6.2 >file1 &&
464 concat_insert long 6.1 6.2 >file2
467 test_expect_success 'multiple identical conflicts' '
468 rm -fr .git/rr-cache &&
469 mkdir .git/rr-cache &&
472 test_seq 1 6 >early &&
474 test_seq 11 15 >short &&
475 test_seq 111 120 >long &&
476 concat_insert short >file1 &&
477 concat_insert long >file2 &&
478 git add file1 file2 &&
479 git commit -m base &&
481 git checkout -b six.1 &&
482 concat_insert short 6.1 >file1 &&
483 concat_insert long 6.1 >file2 &&
484 git add file1 file2 &&
486 git checkout -b six.2 HEAD^ &&
487 concat_insert short 6.2 >file1 &&
488 concat_insert long 6.2 >file2 &&
489 git add file1 file2 &&
492 # At this point, six.1 and six.2
493 # - derive from common ancestor that has two files
494 # 1...6 7 11..15 (file1) and 1...6 7 111..120 (file2)
495 # - six.1 replaces these 7s with 6.1
496 # - six.2 replaces these 7s with 6.2
498 merge_conflict_resolve &&
500 # Check that rerere knows that file1 and file2 have conflicts
502 printf "%s\n" file1 file2 >expect &&
503 git ls-files -u | sed -e "s/^.* //" | sort -u >actual &&
504 test_cmp expect actual &&
506 git rerere status | sort >actual &&
507 test_cmp expect actual &&
509 git rerere remaining >actual &&
510 test_cmp expect actual &&
512 count_pre_post 2 0 &&
514 # Pretend that the conflicts were made quite some time ago
515 test-tool chmtime -172800 $(find .git/rr-cache/ -type f) &&
517 # Unresolved entries have not expired yet
518 git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
519 count_pre_post 2 0 &&
521 # Unresolved entries have expired
522 git -c gc.rerereresolved=5 -c gc.rerereunresolved=1 rerere gc &&
523 count_pre_post 0 0 &&
525 # Recreate the conflicted state
526 merge_conflict_resolve &&
527 count_pre_post 2 0 &&
531 count_pre_post 0 0 &&
533 # Recreate the conflicted state
534 merge_conflict_resolve &&
535 count_pre_post 2 0 &&
537 # We resolved file1 and file2
539 git rerere remaining >actual &&
540 test_must_be_empty actual &&
542 # We must have recorded both of them
543 count_pre_post 2 2 &&
545 # Now we should be able to resolve them both
547 test_must_fail git merge six.1 &&
550 git rerere remaining >actual &&
551 test_must_be_empty actual &&
553 concat_insert short 6.1 6.2 >file1.expect &&
554 concat_insert long 6.1 6.2 >file2.expect &&
555 test_cmp file1.expect file1 &&
556 test_cmp file2.expect file2 &&
558 # Forget resolution for file2
559 git rerere forget file2 &&
560 echo file2 >expect &&
561 git rerere status >actual &&
562 test_cmp expect actual &&
563 count_pre_post 2 1 &&
565 # file2 already has correct resolution, so record it again
568 # Pretend that the resolutions are old again
569 test-tool chmtime -172800 $(find .git/rr-cache/ -type f) &&
571 # Resolved entries have not expired yet
572 git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
574 count_pre_post 2 2 &&
576 # Resolved entries have expired
577 git -c gc.rerereresolved=1 -c gc.rerereunresolved=5 rerere gc &&
581 test_expect_success 'rerere with unexpected conflict markers does not crash' '
584 git checkout -b branch-1 master &&
587 git commit -q -m two &&
590 git checkout -b branch-2 master &&
593 git commit -q -a -m one &&
595 test_must_fail git merge branch-1 &&
596 echo "<<<<<<< a" >test &&
602 test_expect_success 'rerere with inner conflict markers' '
605 git checkout -b A master &&
608 git commit -q -m two &&
611 git commit -q -m three &&
614 git checkout -b B master &&
617 git commit -q -a -m one &&
619 test_must_fail git merge A~ &&
621 git commit -q -m "will solve conflicts later" &&
622 test_must_fail git merge A &&
624 echo "resolved" >test &&
626 git commit -q -m "solved conflict" &&
628 echo "resolved" >expect &&
630 git reset --hard HEAD~~ &&
631 test_must_fail git merge A~ &&
633 git commit -q -m "will solve conflicts later" &&
634 test_must_fail git merge A &&
636 test_cmp expect actual &&
639 git commit -m "rerere solved conflict" &&
640 git reset --hard HEAD~ &&
641 test_must_fail git merge A &&
643 test_cmp expect actual
646 test_expect_success 'setup simple stage 1 handling' '
647 test_create_repo stage_1_handling &&
649 cd stage_1_handling &&
651 test_seq 1 10 >original &&
653 git commit -m original &&
655 git checkout -b A master &&
657 git commit -m "rename to A" &&
659 git checkout -b B master &&
661 git commit -m "rename to B"
665 test_expect_success 'test simple stage 1 handling' '
667 cd stage_1_handling &&
669 git config rerere.enabled true &&
671 test_must_fail git merge B^0