summaryrefslogtreecommitdiff
path: root/t/t6022-merge-rename.sh
blob: a89dfbef08a5a9ff2d4c8727b67b44279fe522e5 (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
#!/bin/sh
 
test_description='Merge-recursive merging renames'
. ./test-lib.sh
 
modify () {
	sed -e "$1" <"$2" >"$2.x" &&
	mv "$2.x" "$2"
}
 
test_expect_success setup \
'
cat >A <<\EOF &&
a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
c cccccccccccccccccccccccccccccccccccccccccccccccc
d dddddddddddddddddddddddddddddddddddddddddddddddd
e eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
f ffffffffffffffffffffffffffffffffffffffffffffffff
g gggggggggggggggggggggggggggggggggggggggggggggggg
h hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
i iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
j jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
k kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
l llllllllllllllllllllllllllllllllllllllllllllllll
m mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
n nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
o oooooooooooooooooooooooooooooooooooooooooooooooo
EOF
 
cat >M <<\EOF &&
A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
B BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
C CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
D DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
E EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
F FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
G GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
H HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
I IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
J JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ
K KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
L LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
M MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
EOF
 
git add A M &&
git commit -m "initial has A and M" &&
git branch white &&
git branch red &&
git branch blue &&
git branch yellow &&
git branch change &&
git branch change+rename &&
 
sed -e "/^g /s/.*/g : master changes a line/" <A >A+ &&
mv A+ A &&
git commit -a -m "master updates A" &&
 
git checkout yellow &&
rm -f M &&
git commit -a -m "yellow removes M" &&
 
git checkout white &&
sed -e "/^g /s/.*/g : white changes a line/" <A >B &&
sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
rm -f A M &&
git update-index --add --remove A B M N &&
git commit -m "white renames A->B, M->N" &&
 
git checkout red &&
sed -e "/^g /s/.*/g : red changes a line/" <A >B &&
sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
rm -f A M &&
git update-index --add --remove A B M N &&
git commit -m "red renames A->B, M->N" &&
 
git checkout blue &&
sed -e "/^g /s/.*/g : blue changes a line/" <A >C &&
sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
rm -f A M &&
git update-index --add --remove A C M N &&
git commit -m "blue renames A->C, M->N" &&
 
git checkout change &&
sed -e "/^g /s/.*/g : changed line/" <A >A+ &&
mv A+ A &&
git commit -q -a -m "changed" &&
 
git checkout change+rename &&
sed -e "/^g /s/.*/g : changed line/" <A >B &&
rm A &&
git update-index --add B &&
git commit -q -a -m "changed and renamed" &&
 
git checkout master'
 
test_expect_success 'pull renaming branch into unrenaming one' \
'
	git show-branch &&
	test_expect_code 1 git pull . white &&
	git ls-files -s &&
	git ls-files -u B >b.stages &&
	test_line_count = 3 b.stages &&
	git ls-files -s N >n.stages &&
	test_line_count = 1 n.stages &&
	sed -ne "/^g/{
	p
	q
	}" B | grep master &&
	git diff --exit-code white N
'
 
test_expect_success 'pull renaming branch into another renaming one' \
'
	rm -f B &&
	git reset --hard &&
	git checkout red &&
	test_expect_code 1 git pull . white &&
	git ls-files -u B >b.stages &&
	test_line_count = 3 b.stages &&
	git ls-files -s N >n.stages &&
	test_line_count = 1 n.stages &&
	sed -ne "/^g/{
	p
	q
	}" B | grep red &&
	git diff --exit-code white N
'
 
test_expect_success 'pull unrenaming branch into renaming one' \
'
	git reset --hard &&
	git show-branch &&
	test_expect_code 1 git pull . master &&
	git ls-files -u B >b.stages &&
	test_line_count = 3 b.stages &&
	git ls-files -s N >n.stages &&
	test_line_count = 1 n.stages &&
	sed -ne "/^g/{
	p
	q
	}" B | grep red &&
	git diff --exit-code white N
'
 
test_expect_success 'pull conflicting renames' \
'
	git reset --hard &&
	git show-branch &&
	test_expect_code 1 git pull . blue &&
	git ls-files -u A >a.stages &&
	test_line_count = 1 a.stages &&
	git ls-files -u B >b.stages &&
	test_line_count = 1 b.stages &&
	git ls-files -u C >c.stages &&
	test_line_count = 1 c.stages &&
	git ls-files -s N >n.stages &&
	test_line_count = 1 n.stages &&
	sed -ne "/^g/{
	p
	q
	}" B | grep red &&
	git diff --exit-code white N
'
 
test_expect_success 'interference with untracked working tree file' '
	git reset --hard &&
	git show-branch &&
	echo >A this file should not matter &&
	test_expect_code 1 git pull . white &&
	test_path_is_file A
'
 
test_expect_success 'interference with untracked working tree file' '
	git reset --hard &&
	git checkout white &&
	git show-branch &&
	rm -f A &&
	echo >A this file should not matter &&
	test_expect_code 1 git pull . red &&
	test_path_is_file A
'
 
test_expect_success 'interference with untracked working tree file' '
	git reset --hard &&
	rm -f A M &&
	git checkout -f master &&
	git tag -f anchor &&
	git show-branch &&
	git pull . yellow &&
	test_path_is_missing M &&
	git reset --hard anchor
'
 
test_expect_success 'updated working tree file should prevent the merge' '
	git reset --hard &&
	rm -f A M &&
	git checkout -f master &&
	git tag -f anchor &&
	git show-branch &&
	echo >>M one line addition &&
	cat M >M.saved &&
	test_expect_code 128 git pull . yellow &&
	test_cmp M M.saved &&
	rm -f M.saved
'
 
test_expect_success 'updated working tree file should prevent the merge' '
	git reset --hard &&
	rm -f A M &&
	git checkout -f master &&
	git tag -f anchor &&
	git show-branch &&
	echo >>M one line addition &&
	cat M >M.saved &&
	git update-index M &&
	test_expect_code 128 git pull . yellow &&
	test_cmp M M.saved &&
	rm -f M.saved
'
 
test_expect_success 'interference with untracked working tree file' '
	git reset --hard &&
	rm -f A M &&
	git checkout -f yellow &&
	git tag -f anchor &&
	git show-branch &&
	echo >M this file should not matter &&
	git pull . master &&
	test_path_is_file M &&
	! {
		git ls-files -s |
		grep M
	} &&
	git reset --hard anchor
'
 
test_expect_success 'merge of identical changes in a renamed file' '
	rm -f A M N &&
	git reset --hard &&
	git checkout change+rename &&
	GIT_MERGE_VERBOSITY=3 git merge change | test_i18ngrep "^Skipped B" &&
	git reset --hard HEAD^ &&
	git checkout change &&
	GIT_MERGE_VERBOSITY=3 git merge change+rename | test_i18ngrep "^Skipped B"
'
 
test_expect_success 'setup for rename + d/f conflicts' '
	git reset --hard &&
	git checkout --orphan dir-in-way &&
	git rm -rf . &&
	git clean -fdqx &&
 
	mkdir sub &&
	mkdir dir &&
	printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >sub/file &&
	echo foo >dir/file-in-the-way &&
	git add -A &&
	git commit -m "Common commit" &&
 
	echo 11 >>sub/file &&
	echo more >>dir/file-in-the-way &&
	git add -u &&
	git commit -m "Commit to merge, with dir in the way" &&
 
	git checkout -b dir-not-in-way &&
	git reset --soft HEAD^ &&
	git rm -rf dir &&
	git commit -m "Commit to merge, with dir removed" -- dir sub/file &&
 
	git checkout -b renamed-file-has-no-conflicts dir-in-way~1 &&
	git rm -rf dir &&
	git rm sub/file &&
	printf "1\n2\n3\n4\n5555\n6\n7\n8\n9\n10\n" >dir &&
	git add dir &&
	git commit -m "Independent change" &&
 
	git checkout -b renamed-file-has-conflicts dir-in-way~1 &&
	git rm -rf dir &&
	git mv sub/file dir &&
	echo 12 >>dir &&
	git add dir &&
	git commit -m "Conflicting change"
'
 
printf "1\n2\n3\n4\n5555\n6\n7\n8\n9\n10\n11\n" >expected
 
test_expect_success 'Rename+D/F conflict; renamed file merges + dir not in way' '
	git reset --hard &&
	git checkout -q renamed-file-has-no-conflicts^0 &&
	git merge --strategy=recursive dir-not-in-way &&
	git diff --quiet &&
	test -f dir &&
	test_cmp expected dir
'
 
test_expect_success 'Rename+D/F conflict; renamed file merges but dir in way' '
	git reset --hard &&
	rm -rf dir~* &&
	git checkout -q renamed-file-has-no-conflicts^0 &&
	test_must_fail git merge --strategy=recursive dir-in-way >output &&
 
	test_i18ngrep "CONFLICT (modify/delete): dir/file-in-the-way" output &&
	test_i18ngrep "Auto-merging dir" output &&
	test_i18ngrep "Adding as dir~HEAD instead" output &&
 
	test 3 -eq "$(git ls-files -u | wc -l)" &&
	test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 
	test_must_fail git diff --quiet &&
	test_must_fail git diff --cached --quiet &&
 
	test -f dir/file-in-the-way &&
	test -f dir~HEAD &&
	test_cmp expected dir~HEAD
'
 
test_expect_success 'Same as previous, but merged other way' '
	git reset --hard &&
	rm -rf dir~* &&
	git checkout -q dir-in-way^0 &&
	test_must_fail git merge --strategy=recursive renamed-file-has-no-conflicts >output 2>errors &&
 
	! grep "error: refusing to lose untracked file at" errors &&
	test_i18ngrep "CONFLICT (modify/delete): dir/file-in-the-way" output &&
	test_i18ngrep "Auto-merging dir" output &&
	test_i18ngrep "Adding as dir~renamed-file-has-no-conflicts instead" output &&
 
	test 3 -eq "$(git ls-files -u | wc -l)" &&
	test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 
	test_must_fail git diff --quiet &&
	test_must_fail git diff --cached --quiet &&
 
	test -f dir/file-in-the-way &&
	test -f dir~renamed-file-has-no-conflicts &&
	test_cmp expected dir~renamed-file-has-no-conflicts
'
 
cat >expected <<\EOF &&
1
2
3
4
5
6
7
8
9
10
<<<<<<< HEAD:dir
12
=======
11
>>>>>>> dir-not-in-way:sub/file
EOF
 
test_expect_success 'Rename+D/F conflict; renamed file cannot merge, dir not in way' '
	git reset --hard &&
	rm -rf dir~* &&
	git checkout -q renamed-file-has-conflicts^0 &&
	test_must_fail git merge --strategy=recursive dir-not-in-way &&
 
	test 3 -eq "$(git ls-files -u | wc -l)" &&
	test 3 -eq "$(git ls-files -u dir | wc -l)" &&
 
	test_must_fail git diff --quiet &&
	test_must_fail git diff --cached --quiet &&
 
	test -f dir &&
	test_cmp expected dir
'
 
test_expect_success 'Rename+D/F conflict; renamed file cannot merge and dir in the way' '
	modify s/dir-not-in-way/dir-in-way/ expected &&
 
	git reset --hard &&
	rm -rf dir~* &&
	git checkout -q renamed-file-has-conflicts^0 &&
	test_must_fail git merge --strategy=recursive dir-in-way &&
 
	test 5 -eq "$(git ls-files -u | wc -l)" &&
	test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" &&
	test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 
	test_must_fail git diff --quiet &&
	test_must_fail git diff --cached --quiet &&
 
	test -f dir/file-in-the-way &&
	test -f dir~HEAD &&
	test_cmp expected dir~HEAD
'
 
cat >expected <<\EOF &&
1
2
3
4
5
6
7
8
9
10
<<<<<<< HEAD:sub/file
11
=======
12
>>>>>>> renamed-file-has-conflicts:dir
EOF
 
test_expect_success 'Same as previous, but merged other way' '
	git reset --hard &&
	rm -rf dir~* &&
	git checkout -q dir-in-way^0 &&
	test_must_fail git merge --strategy=recursive renamed-file-has-conflicts &&
 
	test 5 -eq "$(git ls-files -u | wc -l)" &&
	test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" &&
	test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 
	test_must_fail git diff --quiet &&
	test_must_fail git diff --cached --quiet &&
 
	test -f dir/file-in-the-way &&
	test -f dir~renamed-file-has-conflicts &&
	test_cmp expected dir~renamed-file-has-conflicts
'
 
test_expect_success 'setup both rename source and destination involved in D/F conflict' '
	git reset --hard &&
	git checkout --orphan rename-dest &&
	git rm -rf . &&
	git clean -fdqx &&
 
	mkdir one &&
	echo stuff >one/file &&
	git add -A &&
	git commit -m "Common commit" &&
 
	git mv one/file destdir &&
	git commit -m "Renamed to destdir" &&
 
	git checkout -b source-conflict HEAD~1 &&
	git rm -rf one &&
	mkdir destdir &&
	touch one destdir/foo &&
	git add -A &&
	git commit -m "Conflicts in the way"
'
 
test_expect_success 'both rename source and destination involved in D/F conflict' '
	git reset --hard &&
	rm -rf dir~* &&
	git checkout -q rename-dest^0 &&
	test_must_fail git merge --strategy=recursive source-conflict &&
 
	test 1 -eq "$(git ls-files -u | wc -l)" &&
 
	test_must_fail git diff --quiet &&
 
	test -f destdir/foo &&
	test -f one &&
	test -f destdir~HEAD &&
	test "stuff" = "$(cat destdir~HEAD)"
'
 
test_expect_success 'setup pair rename to parent of other (D/F conflicts)' '
	git reset --hard &&
	git checkout --orphan rename-two &&
	git rm -rf . &&
	git clean -fdqx &&
 
	mkdir one &&
	mkdir two &&
	echo stuff >one/file &&
	echo other >two/file &&
	git add -A &&
	git commit -m "Common commit" &&
 
	git rm -rf one &&
	git mv two/file one &&
	git commit -m "Rename two/file -> one" &&
 
	git checkout -b rename-one HEAD~1 &&
	git rm -rf two &&
	git mv one/file two &&
	rm -r one &&
	git commit -m "Rename one/file -> two"
'
 
test_expect_success 'pair rename to parent of other (D/F conflicts) w/ untracked dir' '
	git checkout -q rename-one^0 &&
	mkdir one &&
	test_must_fail git merge --strategy=recursive rename-two &&
 
	test 2 -eq "$(git ls-files -u | wc -l)" &&
	test 1 -eq "$(git ls-files -u one | wc -l)" &&
	test 1 -eq "$(git ls-files -u two | wc -l)" &&
 
	test_must_fail git diff --quiet &&
 
	test 4 -eq $(find . | grep -v .git | wc -l) &&
 
	test -d one &&
	test -f one~rename-two &&
	test -f two &&
	test "other" = $(cat one~rename-two) &&
	test "stuff" = $(cat two)
'
 
test_expect_success 'pair rename to parent of other (D/F conflicts) w/ clean start' '
	git reset --hard &&
	git clean -fdqx &&
	test_must_fail git merge --strategy=recursive rename-two &&
 
	test 2 -eq "$(git ls-files -u | wc -l)" &&
	test 1 -eq "$(git ls-files -u one | wc -l)" &&
	test 1 -eq "$(git ls-files -u two | wc -l)" &&
 
	test_must_fail git diff --quiet &&
 
	test 3 -eq $(find . | grep -v .git | wc -l) &&
 
	test -f one &&
	test -f two &&
	test "other" = $(cat one) &&
	test "stuff" = $(cat two)
'
 
test_expect_success 'setup rename of one file to two, with directories in the way' '
	git reset --hard &&
	git checkout --orphan first-rename &&
	git rm -rf . &&
	git clean -fdqx &&
 
	echo stuff >original &&
	git add -A &&
	git commit -m "Common commit" &&
 
	mkdir two &&
	>two/file &&
	git add two/file &&
	git mv original one &&
	git commit -m "Put two/file in the way, rename to one" &&
 
	git checkout -b second-rename HEAD~1 &&
	mkdir one &&
	>one/file &&
	git add one/file &&
	git mv original two &&
	git commit -m "Put one/file in the way, rename to two"
'
 
test_expect_success 'check handling of differently renamed file with D/F conflicts' '
	git checkout -q first-rename^0 &&
	test_must_fail git merge --strategy=recursive second-rename &&
 
	test 5 -eq "$(git ls-files -s | wc -l)" &&
	test 3 -eq "$(git ls-files -u | wc -l)" &&
	test 1 -eq "$(git ls-files -u one | wc -l)" &&
	test 1 -eq "$(git ls-files -u two | wc -l)" &&
	test 1 -eq "$(git ls-files -u original | wc -l)" &&
	test 2 -eq "$(git ls-files -o | wc -l)" &&
 
	test -f one/file &&
	test -f two/file &&
	test -f one~HEAD &&
	test -f two~second-rename &&
	! test -f original
'
 
test_expect_success 'setup rename one file to two; directories moving out of the way' '
	git reset --hard &&
	git checkout --orphan first-rename-redo &&
	git rm -rf . &&
	git clean -fdqx &&
 
	echo stuff >original &&
	mkdir one two &&
	touch one/file two/file &&
	git add -A &&
	git commit -m "Common commit" &&
 
	git rm -rf one &&
	git mv original one &&
	git commit -m "Rename to one" &&
 
	git checkout -b second-rename-redo HEAD~1 &&
	git rm -rf two &&
	git mv original two &&
	git commit -m "Rename to two"
'
 
test_expect_success 'check handling of differently renamed file with D/F conflicts' '
	git checkout -q first-rename-redo^0 &&
	test_must_fail git merge --strategy=recursive second-rename-redo &&
 
	test 3 -eq "$(git ls-files -u | wc -l)" &&
	test 1 -eq "$(git ls-files -u one | wc -l)" &&
	test 1 -eq "$(git ls-files -u two | wc -l)" &&
	test 1 -eq "$(git ls-files -u original | wc -l)" &&
	test 0 -eq "$(git ls-files -o | wc -l)" &&
 
	test -f one &&
	test -f two &&
	! test -f original
'
 
test_expect_success 'setup avoid unnecessary update, normal rename' '
	git reset --hard &&
	git checkout --orphan avoid-unnecessary-update-1 &&
	git rm -rf . &&
	git clean -fdqx &&
 
	printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >original &&
	git add -A &&
	git commit -m "Common commit" &&
 
	git mv original rename &&
	echo 11 >>rename &&
	git add -u &&
	git commit -m "Renamed and modified" &&
 
	git checkout -b merge-branch-1 HEAD~1 &&
	echo "random content" >random-file &&
	git add -A &&
	git commit -m "Random, unrelated changes"
'
 
test_expect_success 'avoid unnecessary update, normal rename' '
	git checkout -q avoid-unnecessary-update-1^0 &&
	test-chmtime =1000000000 rename &&
	test-chmtime -v +0 rename >expect &&
	git merge merge-branch-1 &&
	test-chmtime -v +0 rename >actual &&
	test_cmp expect actual # "rename" should have stayed intact
'
 
test_expect_success 'setup to test avoiding unnecessary update, with D/F conflict' '
	git reset --hard &&
	git checkout --orphan avoid-unnecessary-update-2 &&
	git rm -rf . &&
	git clean -fdqx &&
 
	mkdir df &&
	printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >df/file &&
	git add -A &&
	git commit -m "Common commit" &&
 
	git mv df/file temp &&
	rm -rf df &&
	git mv temp df &&
	echo 11 >>df &&
	git add -u &&
	git commit -m "Renamed and modified" &&
 
	git checkout -b merge-branch-2 HEAD~1 &&
	>unrelated-change &&
	git add unrelated-change &&
	git commit -m "Only unrelated changes"
'
 
test_expect_success 'avoid unnecessary update, with D/F conflict' '
	git checkout -q avoid-unnecessary-update-2^0 &&
	test-chmtime =1000000000 df &&
	test-chmtime -v +0 df >expect &&
	git merge merge-branch-2 &&
	test-chmtime -v +0 df >actual &&
	test_cmp expect actual # "df" should have stayed intact
'
 
test_expect_success 'setup avoid unnecessary update, dir->(file,nothing)' '
	git rm -rf . &&
	git clean -fdqx &&
	rm -rf .git &&
	git init &&
 
	>irrelevant &&
	mkdir df &&
	>df/file &&
	git add -A &&
	git commit -mA &&
 
	git checkout -b side
	git rm -rf df &&
	git commit -mB &&
 
	git checkout master &&
	git rm -rf df &&
	echo bla >df &&
	git add -A &&
	git commit -m "Add a newfile"
'
 
test_expect_success 'avoid unnecessary update, dir->(file,nothing)' '
	git checkout -q master^0 &&
	test-chmtime =1000000000 df &&
	test-chmtime -v +0 df >expect &&
	git merge side &&
	test-chmtime -v +0 df >actual &&
	test_cmp expect actual # "df" should have stayed intact
'
 
test_expect_success 'setup avoid unnecessary update, modify/delete' '
	git rm -rf . &&
	git clean -fdqx &&
	rm -rf .git &&
	git init &&
 
	>irrelevant &&
	>file &&
	git add -A &&
	git commit -mA &&
 
	git checkout -b side
	git rm -f file &&
	git commit -m "Delete file" &&
 
	git checkout master &&
	echo bla >file &&
	git add -A &&
	git commit -m "Modify file"
'
 
test_expect_success 'avoid unnecessary update, modify/delete' '
	git checkout -q master^0 &&
	test-chmtime =1000000000 file &&
	test-chmtime -v +0 file >expect &&
	test_must_fail git merge side &&
	test-chmtime -v +0 file >actual &&
	test_cmp expect actual # "file" should have stayed intact
'
 
test_expect_success 'setup avoid unnecessary update, rename/add-dest' '
	git rm -rf . &&
	git clean -fdqx &&
	rm -rf .git &&
	git init &&
 
	printf "1\n2\n3\n4\n5\n6\n7\n8\n" >file &&
	git add -A &&
	git commit -mA &&
 
	git checkout -b side
	cp file newfile &&
	git add -A &&
	git commit -m "Add file copy" &&
 
	git checkout master &&
	git mv file newfile &&
	git commit -m "Rename file"
'
 
test_expect_success 'avoid unnecessary update, rename/add-dest' '
	git checkout -q master^0 &&
	test-chmtime =1000000000 newfile &&
	test-chmtime -v +0 newfile >expect &&
	git merge side &&
	test-chmtime -v +0 newfile >actual &&
	test_cmp expect actual # "file" should have stayed intact
'
 
test_expect_success 'setup merge of rename + small change' '
	git reset --hard &&
	git checkout --orphan rename-plus-small-change &&
	git rm -rf . &&
	git clean -fdqx &&
 
	echo ORIGINAL >file &&
	git add file &&
 
	test_tick &&
	git commit -m Initial &&
	git checkout -b rename_branch &&
	git mv file renamed_file &&
	git commit -m Rename &&
	git checkout rename-plus-small-change &&
	echo NEW-VERSION >file &&
	git commit -a -m Reformat
'
 
test_expect_success 'merge rename + small change' '
	git merge rename_branch &&
 
	test 1 -eq $(git ls-files -s | wc -l) &&
	test 0 -eq $(git ls-files -o | wc -l) &&
	test $(git rev-parse HEAD:renamed_file) = $(git rev-parse HEAD~1:file)
'
 
test_expect_success 'setup for use of extended merge markers' '
	git rm -rf . &&
	git clean -fdqx &&
	rm -rf .git &&
	git init &&
 
	printf "1\n2\n3\n4\n5\n6\n7\n8\n" >original_file &&
	git add original_file &&
	git commit -mA &&
 
	git checkout -b rename &&
	echo 9 >>original_file &&
	git add original_file &&
	git mv original_file renamed_file &&
	git commit -mB &&
 
	git checkout master &&
	echo 8.5 >>original_file &&
	git add original_file &&
	git commit -mC
'
 
cat >expected <<\EOF &&
1
2
3
4
5
6
7
8
<<<<<<< HEAD:renamed_file
9
=======
8.5
>>>>>>> master^0:original_file
EOF
 
test_expect_success 'merge master into rename has correct extended markers' '
	git checkout rename^0 &&
	test_must_fail git merge -s recursive master^0 &&
	test_cmp expected renamed_file
'
 
cat >expected <<\EOF &&
1
2
3
4
5
6
7
8
<<<<<<< HEAD:original_file
8.5
=======
9
>>>>>>> rename^0:renamed_file
EOF
 
test_expect_success 'merge rename into master has correct extended markers' '
	git reset --hard &&
	git checkout master^0 &&
	test_must_fail git merge -s recursive rename^0 &&
	test_cmp expected renamed_file
'
 
test_expect_success 'setup spurious "refusing to lose untracked" message' '
	git rm -rf . &&
	git clean -fdqx &&
	rm -rf .git &&
	git init &&
 
	> irrelevant_file &&
	printf "1\n2\n3\n4\n5\n6\n7\n8\n" >original_file &&
	git add irrelevant_file original_file &&
	git commit -mA &&
 
	git checkout -b rename &&
	git mv original_file renamed_file &&
	git commit -mB &&
 
	git checkout master &&
	git rm original_file &&
	git commit -mC
'
 
test_expect_success 'no spurious "refusing to lose untracked" message' '
	git checkout master^0 &&
	test_must_fail git merge rename^0 2>errors.txt &&
	! grep "refusing to lose untracked file" errors.txt
'
 
test_expect_success 'do not follow renames for empty files' '
	git checkout -f -b empty-base &&
	>empty1 &&
	git add empty1 &&
	git commit -m base &&
	echo content >empty1 &&
	git add empty1 &&
	git commit -m fill &&
	git checkout -b empty-topic HEAD^ &&
	git mv empty1 empty2 &&
	git commit -m rename &&
	test_must_fail git merge empty-base &&
	>expect &&
	test_cmp expect empty2
'
 
test_done