3 test_description="merge cases"
5 # The setup for all of them, pictorially, is:
15 # To help make it easier to follow the flow of tests, they have been
16 # divided into sections and each test will start with a quick explanation
17 # of what commits O, A, and B contain.
20 # z/{b,c} means files z/b and z/c both exist
21 # x/d_1 means file x/d exists with content d1. (Purpose of the
22 # underscore notation is to differentiate different
23 # files that might be renamed into each other's paths.)
28 ###########################################################################
29 # SECTION 1: Cases involving no renames (one side has subset of changes of
31 ###########################################################################
33 # Testcase 1a, Changes on A, subset of changes on B
39 test_expect_success '1a-setup: Modify(A)/Modify(B), change on B subset of A' '
40 test_create_repo 1a &&
44 test_write_lines 1 2 3 4 5 6 7 8 9 10 >b &&
54 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b &&
60 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b &&
67 test_expect_success '1a-check-L: Modify(A)/Modify(B), change on B subset of A' '
68 test_when_finished "git -C 1a reset --hard" &&
69 test_when_finished "git -C 1a clean -fd" &&
75 test-tool chmtime =31337 b &&
76 test-tool chmtime -v +0 b >expected-mtime &&
78 GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
80 test_i18ngrep "Skipped b" out &&
81 test_must_be_empty err &&
83 test-tool chmtime -v +0 b >actual-mtime &&
84 test_cmp expected-mtime actual-mtime &&
86 git ls-files -s >index_files &&
87 test_line_count = 1 index_files &&
89 git rev-parse >actual HEAD:b &&
90 git rev-parse >expect A:b &&
91 test_cmp expect actual &&
93 git hash-object b >actual &&
94 git rev-parse A:b >expect &&
95 test_cmp expect actual
99 test_expect_success '1a-check-R: Modify(A)/Modify(B), change on B subset of A' '
100 test_when_finished "git -C 1a reset --hard" &&
101 test_when_finished "git -C 1a clean -fd" &&
107 GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
109 test_i18ngrep "Auto-merging b" out &&
110 test_must_be_empty err &&
112 git ls-files -s >index_files &&
113 test_line_count = 1 index_files &&
115 git rev-parse >actual HEAD:b &&
116 git rev-parse >expect A:b &&
117 test_cmp expect actual &&
119 git hash-object b >actual &&
120 git rev-parse A:b >expect &&
121 test_cmp expect actual
126 ###########################################################################
127 # SECTION 2: Cases involving basic renames
128 ###########################################################################
130 # Testcase 2a, Changes on A, rename on B
136 test_expect_success '2a-setup: Modify(A)/rename(B)' '
137 test_create_repo 2a &&
163 test_expect_success '2a-check-L: Modify/rename, merge into modify side' '
164 test_when_finished "git -C 2a reset --hard" &&
165 test_when_finished "git -C 2a clean -fd" &&
171 GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
173 test_i18ngrep ! "Skipped c" out &&
174 test_must_be_empty err &&
176 git ls-files -s >index_files &&
177 test_line_count = 1 index_files &&
179 git rev-parse >actual HEAD:c &&
180 git rev-parse >expect A:b &&
181 test_cmp expect actual &&
183 git hash-object c >actual &&
184 git rev-parse A:b >expect &&
185 test_cmp expect actual &&
187 test_must_fail git rev-parse HEAD:b &&
188 test_path_is_missing b
192 test_expect_success '2a-check-R: Modify/rename, merge into rename side' '
193 test_when_finished "git -C 2a reset --hard" &&
194 test_when_finished "git -C 2a clean -fd" &&
200 GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
202 test_i18ngrep ! "Skipped c" out &&
203 test_must_be_empty err &&
205 git ls-files -s >index_files &&
206 test_line_count = 1 index_files &&
208 git rev-parse >actual HEAD:c &&
209 git rev-parse >expect A:b &&
210 test_cmp expect actual &&
212 git hash-object c >actual &&
213 git rev-parse A:b >expect &&
214 test_cmp expect actual &&
216 test_must_fail git rev-parse HEAD:b &&
217 test_path_is_missing b
221 # Testcase 2b, Changed and renamed on A, subset of changes on B
227 test_expect_success '2b-setup: Rename+Mod(A)/Mod(B), B mods subset of A' '
228 test_create_repo 2b &&
232 test_write_lines 1 2 3 4 5 6 7 8 9 10 >b &&
242 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b &&
249 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b &&
256 test_expect_success '2b-check-L: Rename+Mod(A)/Mod(B), B mods subset of A' '
257 test_when_finished "git -C 2b reset --hard" &&
258 test_when_finished "git -C 2b clean -fd" &&
264 test-tool chmtime =31337 c &&
265 test-tool chmtime -v +0 c >expected-mtime &&
267 GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
269 test_i18ngrep "Skipped c" out &&
270 test_must_be_empty err &&
272 test-tool chmtime -v +0 c >actual-mtime &&
273 test_cmp expected-mtime actual-mtime &&
275 git ls-files -s >index_files &&
276 test_line_count = 1 index_files &&
278 git rev-parse >actual HEAD:c &&
279 git rev-parse >expect A:c &&
280 test_cmp expect actual &&
282 git hash-object c >actual &&
283 git rev-parse A:c >expect &&
284 test_cmp expect actual &&
286 test_must_fail git rev-parse HEAD:b &&
287 test_path_is_missing b
291 test_expect_success '2b-check-R: Rename+Mod(A)/Mod(B), B mods subset of A' '
292 test_when_finished "git -C 2b reset --hard" &&
293 test_when_finished "git -C 2b clean -fd" &&
299 GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
301 test_i18ngrep "Auto-merging c" out &&
302 test_must_be_empty err &&
304 git ls-files -s >index_files &&
305 test_line_count = 1 index_files &&
307 git rev-parse >actual HEAD:c &&
308 git rev-parse >expect A:c &&
309 test_cmp expect actual &&
311 git hash-object c >actual &&
312 git rev-parse A:c >expect &&
313 test_cmp expect actual &&
315 test_must_fail git rev-parse HEAD:b &&
316 test_path_is_missing b
320 # Testcase 2c, Changes on A, rename on B
324 # Expected: rename/add conflict c_2 vs c_3
326 # NOTE: Since A modified b_1->b_2, and B renamed b_1->c_1, the threeway
327 # merge of those files should result in c_2. We then should have a
328 # rename/add conflict between c_2 and c_3. However, if we note in
329 # merge_content() that A had the right contents (b_2 has same
330 # contents as c_2, just at a different name), and that A had the
331 # right path present (c_3 existed) and thus decides that it can
332 # skip the update, then we're in trouble. This test verifies we do
333 # not make that particular mistake.
335 test_expect_success '2c-setup: Modify b & add c VS rename b->c' '
336 test_create_repo 2c &&
363 test_expect_success '2c-check: Modify b & add c VS rename b->c' '
369 GIT_MERGE_VERBOSITY=3 &&
370 export GIT_MERGE_VERBOSITY &&
371 test_must_fail git merge -s recursive B^0 >out 2>err &&
373 test_i18ngrep "CONFLICT (rename/add): Rename b->c" out &&
374 test_i18ngrep ! "Skipped c" out &&
375 test_must_be_empty err
377 # FIXME: rename/add conflicts are horribly broken right now;
378 # when I get back to my patch series fixing it and
379 # rename/rename(2to1) conflicts to bring them in line with
380 # how add/add conflicts behave, then checks like the below
381 # could be added. But that patch series is waiting until
382 # the rename-directory-detection series lands, which this
383 # is part of. And in the mean time, I do not want to further
384 # enforce broken behavior. So for now, the main test is the
385 # one above that err is an empty file.
387 #git ls-files -s >index_files &&
388 #test_line_count = 2 index_files &&
390 #git rev-parse >actual :2:c :3:c &&
391 #git rev-parse >expect A:b A:c &&
392 #test_cmp expect actual &&
394 #git cat-file -p A:b >>merged &&
395 #git cat-file -p A:c >>merge-me &&
397 #test_must_fail git merge-file \
398 # -L "Temporary merge branch 1" \
400 # -L "Temporary merge branch 2" \
401 # merged empty merge-me &&
402 #sed -e "s/^\([<=>]\)/\1\1\1/" merged >merged-internal &&
404 #git hash-object c >actual &&
405 #git hash-object merged-internal >expect &&
406 #test_cmp expect actual &&
408 #test_path_is_missing b
413 ###########################################################################
414 # SECTION 3: Cases involving directory renames
417 # Directory renames only apply when one side renames a directory, and the
418 # other side adds or renames a path into that directory. Applying the
419 # directory rename to that new path creates a new pathname that didn't
420 # exist on either side of history. Thus, it is impossible for the
421 # merge contents to already be at the right path, so all of these checks
422 # exist just to make sure that updates are not skipped.
423 ###########################################################################
425 # Testcase 3a, Change + rename into dir foo on A, dir rename foo->bar on B
426 # Commit O: bq_1, foo/whatever
427 # Commit A: foo/{bq_2, whatever}
428 # Commit B: bq_1, bar/whatever
429 # Expected: bar/{bq_2, whatever}
431 test_expect_success '3a-setup: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
432 test_create_repo 3a &&
438 test_write_lines a b c d e f g h i j k >foo/whatever &&
439 git add bq foo/whatever &&
461 test_expect_success '3a-check-L: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
462 test_when_finished "git -C 3a reset --hard" &&
463 test_when_finished "git -C 3a clean -fd" &&
469 GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
471 test_i18ngrep ! "Skipped bar/bq" out &&
472 test_must_be_empty err &&
474 git ls-files -s >index_files &&
475 test_line_count = 2 index_files &&
477 git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever &&
478 git rev-parse >expect A:foo/bq A:foo/whatever &&
479 test_cmp expect actual &&
481 git hash-object bar/bq bar/whatever >actual &&
482 git rev-parse A:foo/bq A:foo/whatever >expect &&
483 test_cmp expect actual &&
485 test_must_fail git rev-parse HEAD:bq HEAD:foo/bq &&
486 test_path_is_missing bq foo/bq foo/whatever
490 test_expect_success '3a-check-R: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
491 test_when_finished "git -C 3a reset --hard" &&
492 test_when_finished "git -C 3a clean -fd" &&
498 GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
500 test_i18ngrep ! "Skipped bar/bq" out &&
501 test_must_be_empty err &&
503 git ls-files -s >index_files &&
504 test_line_count = 2 index_files &&
506 git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever &&
507 git rev-parse >expect A:foo/bq A:foo/whatever &&
508 test_cmp expect actual &&
510 git hash-object bar/bq bar/whatever >actual &&
511 git rev-parse A:foo/bq A:foo/whatever >expect &&
512 test_cmp expect actual &&
514 test_must_fail git rev-parse HEAD:bq HEAD:foo/bq &&
515 test_path_is_missing bq foo/bq foo/whatever
519 # Testcase 3b, rename into dir foo on A, dir rename foo->bar + change on B
520 # Commit O: bq_1, foo/whatever
521 # Commit A: foo/{bq_1, whatever}
522 # Commit B: bq_2, bar/whatever
523 # Expected: bar/{bq_2, whatever}
525 test_expect_success '3b-setup: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
526 test_create_repo 3b &&
532 test_write_lines a b c d e f g h i j k >foo/whatever &&
533 git add bq foo/whatever &&
555 test_expect_success '3b-check-L: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
556 test_when_finished "git -C 3b reset --hard" &&
557 test_when_finished "git -C 3b clean -fd" &&
563 GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
565 test_i18ngrep ! "Skipped bar/bq" out &&
566 test_must_be_empty err &&
568 git ls-files -s >index_files &&
569 test_line_count = 2 index_files &&
571 git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever &&
572 git rev-parse >expect B:bq A:foo/whatever &&
573 test_cmp expect actual &&
575 git hash-object bar/bq bar/whatever >actual &&
576 git rev-parse B:bq A:foo/whatever >expect &&
577 test_cmp expect actual &&
579 test_must_fail git rev-parse HEAD:bq HEAD:foo/bq &&
580 test_path_is_missing bq foo/bq foo/whatever
584 test_expect_success '3b-check-R: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
585 test_when_finished "git -C 3b reset --hard" &&
586 test_when_finished "git -C 3b clean -fd" &&
592 GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
594 test_i18ngrep ! "Skipped bar/bq" out &&
595 test_must_be_empty err &&
597 git ls-files -s >index_files &&
598 test_line_count = 2 index_files &&
600 git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever &&
601 git rev-parse >expect B:bq A:foo/whatever &&
602 test_cmp expect actual &&
604 git hash-object bar/bq bar/whatever >actual &&
605 git rev-parse B:bq A:foo/whatever >expect &&
606 test_cmp expect actual &&
608 test_must_fail git rev-parse HEAD:bq HEAD:foo/bq &&
609 test_path_is_missing bq foo/bq foo/whatever
613 ###########################################################################
614 # SECTION 4: Cases involving dirty changes
615 ###########################################################################
617 # Testcase 4a, Changed on A, subset of changes on B, locally modified
622 # Expected: b_2 for merge, b_4 in working copy
624 test_expect_success '4a-setup: Change on A, change on B subset of A, dirty mods present' '
625 test_create_repo 4a &&
629 test_write_lines 1 2 3 4 5 6 7 8 9 10 >b &&
639 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b &&
645 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b &&
652 # NOTE: For as long as we continue using unpack_trees() without index_only
653 # set to true, it will error out on a case like this claiming the the locally
654 # modified file would be overwritten by the merge. Getting this testcase
655 # correct requires doing the merge in-memory first, then realizing that no
656 # updates to the file are necessary, and thus that we can just leave the path
658 test_expect_failure '4a-check: Change on A, change on B subset of A, dirty mods present' '
659 test_when_finished "git -C 4a reset --hard" &&
660 test_when_finished "git -C 4a clean -fd" &&
665 echo "File rewritten" >b &&
667 test-tool chmtime =31337 b &&
668 test-tool chmtime -v +0 b >expected-mtime &&
670 GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
672 test_i18ngrep "Skipped b" out &&
673 test_must_be_empty err &&
675 test-tool chmtime -v +0 b >actual-mtime &&
676 test_cmp expected-mtime actual-mtime &&
678 git ls-files -s >index_files &&
679 test_line_count = 1 index_files &&
681 git rev-parse >actual :0:b &&
682 git rev-parse >expect A:b &&
683 test_cmp expect actual &&
685 git hash-object b >actual &&
686 echo "File rewritten" | git hash-object --stdin >expect &&
687 test_cmp expect actual
691 # Testcase 4b, Changed+renamed on A, subset of changes on B, locally modified
698 test_expect_success '4b-setup: Rename+Mod(A)/Mod(B), change on B subset of A, dirty mods present' '
699 test_create_repo 4b &&
703 test_write_lines 1 2 3 4 5 6 7 8 9 10 >b &&
713 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b &&
720 test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b &&
727 test_expect_success '4b-check: Rename+Mod(A)/Mod(B), change on B subset of A, dirty mods present' '
728 test_when_finished "git -C 4b reset --hard" &&
729 test_when_finished "git -C 4b clean -fd" &&
734 echo "File rewritten" >c &&
736 test-tool chmtime =31337 c &&
737 test-tool chmtime -v +0 c >expected-mtime &&
739 GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
741 test_i18ngrep "Skipped c" out &&
742 test_must_be_empty err &&
744 test-tool chmtime -v +0 c >actual-mtime &&
745 test_cmp expected-mtime actual-mtime &&
747 git ls-files -s >index_files &&
748 test_line_count = 1 index_files &&
750 git rev-parse >actual :0:c &&
751 git rev-parse >expect A:c &&
752 test_cmp expect actual &&
754 git hash-object c >actual &&
755 echo "File rewritten" | git hash-object --stdin >expect &&
756 test_cmp expect actual &&
758 test_must_fail git rev-parse HEAD:b &&
759 test_path_is_missing b