diff options
Diffstat (limited to 't/t6042-merge-rename-corner-cases.sh')
| -rwxr-xr-x | t/t6042-merge-rename-corner-cases.sh | 540 |
1 files changed, 491 insertions, 49 deletions
diff --git a/t/t6042-merge-rename-corner-cases.sh b/t/t6042-merge-rename-corner-cases.sh index b97aca7..b047cf1 100755 --- a/t/t6042-merge-rename-corner-cases.sh +++ b/t/t6042-merge-rename-corner-cases.sh @@ -5,7 +5,7 @@ test_description="recursive merge corner cases w/ renames but not criss-crosses" . ./test-lib.sh -test_expect_success 'setup rename/delete + untracked file' ' +test_setup_rename_delete_untracked () { test_create_repo rename-delete-untracked && ( cd rename-delete-untracked && @@ -29,9 +29,10 @@ test_expect_success 'setup rename/delete + untracked file' ' git commit -m track-people-instead-of-objects && echo "Myyy PRECIOUSSS" >ring ) -' +} test_expect_success "Does git preserve Gollum's precious artifact?" ' + test_setup_rename_delete_untracked && ( cd rename-delete-untracked && @@ -49,7 +50,7 @@ test_expect_success "Does git preserve Gollum's precious artifact?" ' # # We should be able to merge B & C cleanly -test_expect_success 'setup rename/modify/add-source conflict' ' +test_setup_rename_modify_add_source () { test_create_repo rename-modify-add-source && ( cd rename-modify-add-source && @@ -70,9 +71,10 @@ test_expect_success 'setup rename/modify/add-source conflict' ' git add a && git commit -m C ) -' +} test_expect_failure 'rename/modify/add-source conflict resolvable' ' + test_setup_rename_modify_add_source && ( cd rename-modify-add-source && @@ -88,7 +90,7 @@ test_expect_failure 'rename/modify/add-source conflict resolvable' ' ) ' -test_expect_success 'setup resolvable conflict missed if rename missed' ' +test_setup_break_detection_1 () { test_create_repo break-detection-1 && ( cd break-detection-1 && @@ -110,9 +112,10 @@ test_expect_success 'setup resolvable conflict missed if rename missed' ' git add a && git commit -m C ) -' +} test_expect_failure 'conflict caused if rename not detected' ' + test_setup_break_detection_1 && ( cd break-detection-1 && @@ -135,7 +138,7 @@ test_expect_failure 'conflict caused if rename not detected' ' ) ' -test_expect_success 'setup conflict resolved wrong if rename missed' ' +test_setup_break_detection_2 () { test_create_repo break-detection-2 && ( cd break-detection-2 && @@ -160,9 +163,10 @@ test_expect_success 'setup conflict resolved wrong if rename missed' ' git add a && git commit -m E ) -' +} test_expect_failure 'missed conflict if rename not detected' ' + test_setup_break_detection_2 && ( cd break-detection-2 && @@ -182,7 +186,7 @@ test_expect_failure 'missed conflict if rename not detected' ' # Commit B: rename a->b # Commit C: rename a->b, add unrelated a -test_expect_success 'setup undetected rename/add-source causes data loss' ' +test_setup_break_detection_3 () { test_create_repo break-detection-3 && ( cd break-detection-3 && @@ -202,9 +206,10 @@ test_expect_success 'setup undetected rename/add-source causes data loss' ' git add a && git commit -m C ) -' +} test_expect_failure 'detect rename/add-source and preserve all data' ' + test_setup_break_detection_3 && ( cd break-detection-3 && @@ -231,6 +236,7 @@ test_expect_failure 'detect rename/add-source and preserve all data' ' ' test_expect_failure 'detect rename/add-source and preserve all data, merge other way' ' + test_setup_break_detection_3 && ( cd break-detection-3 && @@ -256,10 +262,10 @@ test_expect_failure 'detect rename/add-source and preserve all data, merge other ) ' -test_expect_success 'setup content merge + rename/directory conflict' ' - test_create_repo rename-directory-1 && +test_setup_rename_directory () { + test_create_repo rename-directory-$1 && ( - cd rename-directory-1 && + cd rename-directory-$1 && printf "1\n2\n3\n4\n5\n6\n" >file && git add file && @@ -290,11 +296,12 @@ test_expect_success 'setup content merge + rename/directory conflict' ' test_tick && git commit -m left ) -' +} test_expect_success 'rename/directory conflict + clean content merge' ' + test_setup_rename_directory 1a && ( - cd rename-directory-1 && + cd rename-directory-1a && git checkout left-clean^0 && @@ -320,8 +327,9 @@ test_expect_success 'rename/directory conflict + clean content merge' ' ' test_expect_success 'rename/directory conflict + content merge conflict' ' + test_setup_rename_directory 1b && ( - cd rename-directory-1 && + cd rename-directory-1b && git reset --hard && git clean -fdqx && @@ -358,7 +366,7 @@ test_expect_success 'rename/directory conflict + content merge conflict' ' ) ' -test_expect_success 'setup content merge + rename/directory conflict w/ disappearing dir' ' +test_setup_rename_directory_2 () { test_create_repo rename-directory-2 && ( cd rename-directory-2 && @@ -385,9 +393,10 @@ test_expect_success 'setup content merge + rename/directory conflict w/ disappea test_tick && git commit -m left ) -' +} test_expect_success 'disappearing dir in rename/directory conflict handled' ' + test_setup_rename_directory_2 && ( cd rename-directory-2 && @@ -411,6 +420,124 @@ test_expect_success 'disappearing dir in rename/directory conflict handled' ' ) ' +# Test for basic rename/add-dest conflict, with rename needing content merge: +# Commit O: a +# Commit A: rename a->b, modifying b too +# Commit B: modify a, add different b + +test_setup_rename_with_content_merge_and_add () { + test_create_repo rename-with-content-merge-and-add-$1 && + ( + cd rename-with-content-merge-and-add-$1 && + + test_seq 1 5 >a && + git add a && + git commit -m O && + git tag O && + + git checkout -b A O && + git mv a b && + test_seq 0 5 >b && + git add b && + git commit -m A && + + git checkout -b B O && + echo 6 >>a && + echo hello world >b && + git add a b && + git commit -m B + ) +} + +test_expect_success 'handle rename-with-content-merge vs. add' ' + test_setup_rename_with_content_merge_and_add AB && + ( + cd rename-with-content-merge-and-add-AB && + + git checkout A^0 && + + test_must_fail git merge -s recursive B^0 >out && + test_i18ngrep "CONFLICT (rename/add)" out && + + git ls-files -s >out && + test_line_count = 2 out && + git ls-files -u >out && + test_line_count = 2 out && + # Also, make sure both unmerged entries are for "b" + git ls-files -u b >out && + test_line_count = 2 out && + git ls-files -o >out && + test_line_count = 1 out && + + test_path_is_missing a && + test_path_is_file b && + + test_seq 0 6 >tmp && + git hash-object tmp >expect && + git rev-parse B:b >>expect && + git rev-parse >actual \ + :2:b :3:b && + test_cmp expect actual && + + # Test that the two-way merge in b is as expected + git cat-file -p :2:b >>ours && + git cat-file -p :3:b >>theirs && + >empty && + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "B^0" \ + ours empty theirs && + test_cmp ours b + ) +' + +test_expect_success 'handle rename-with-content-merge vs. add, merge other way' ' + test_setup_rename_with_content_merge_and_add BA && + ( + cd rename-with-content-merge-and-add-BA && + + git reset --hard && + git clean -fdx && + + git checkout B^0 && + + test_must_fail git merge -s recursive A^0 >out && + test_i18ngrep "CONFLICT (rename/add)" out && + + git ls-files -s >out && + test_line_count = 2 out && + git ls-files -u >out && + test_line_count = 2 out && + # Also, make sure both unmerged entries are for "b" + git ls-files -u b >out && + test_line_count = 2 out && + git ls-files -o >out && + test_line_count = 1 out && + + test_path_is_missing a && + test_path_is_file b && + + test_seq 0 6 >tmp && + git rev-parse B:b >expect && + git hash-object tmp >>expect && + git rev-parse >actual \ + :2:b :3:b && + test_cmp expect actual && + + # Test that the two-way merge in b is as expected + git cat-file -p :2:b >>ours && + git cat-file -p :3:b >>theirs && + >empty && + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "A^0" \ + ours empty theirs && + test_cmp ours b + ) +' + # Test for all kinds of things that can go wrong with rename/rename (2to1): # Commit A: new files: a & b # Commit B: rename a->c, modify b @@ -423,7 +550,7 @@ test_expect_success 'disappearing dir in rename/directory conflict handled' ' # * The working copy should have two files, both of form c~<unique>; does it? # * Nothing else should be present. Is anything? -test_expect_success 'setup rename/rename (2to1) + modify/modify' ' +test_setup_rename_rename_2to1 () { test_create_repo rename-rename-2to1 && ( cd rename-rename-2to1 && @@ -446,9 +573,10 @@ test_expect_success 'setup rename/rename (2to1) + modify/modify' ' git add a && git commit -m C ) -' +} test_expect_success 'handle rename/rename (2to1) conflict correctly' ' + test_setup_rename_rename_2to1 && ( cd rename-rename-2to1 && @@ -464,17 +592,28 @@ test_expect_success 'handle rename/rename (2to1) conflict correctly' ' git ls-files -u c >out && test_line_count = 2 out && git ls-files -o >out && - test_line_count = 3 out && + test_line_count = 1 out && test_path_is_missing a && test_path_is_missing b && - test_path_is_file c~HEAD && - test_path_is_file c~C^0 && - git rev-parse >expect \ - C:a B:b && - git hash-object >actual \ - c~HEAD c~C^0 && + git rev-parse >expect \ + C:a B:b && + git rev-parse >actual \ + :2:c :3:c && + test_cmp expect actual && + + # Test that the two-way merge in new_a is as expected + git cat-file -p :2:c >>ours && + git cat-file -p :3:c >>theirs && + >empty && + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "C^0" \ + ours empty theirs && + git hash-object c >actual && + git hash-object ours >expect && test_cmp expect actual ) ' @@ -483,7 +622,7 @@ test_expect_success 'handle rename/rename (2to1) conflict correctly' ' # Commit A: new file: a # Commit B: rename a->b # Commit C: rename a->c -test_expect_success 'setup simple rename/rename (1to2) conflict' ' +test_setup_rename_rename_1to2 () { test_create_repo rename-rename-1to2 && ( cd rename-rename-1to2 && @@ -504,9 +643,10 @@ test_expect_success 'setup simple rename/rename (1to2) conflict' ' test_tick && git commit -m C ) -' +} test_expect_success 'merge has correct working tree contents' ' + test_setup_rename_rename_1to2 && ( cd rename-rename-1to2 && @@ -540,7 +680,7 @@ test_expect_success 'merge has correct working tree contents' ' # # Merging of B & C should NOT be clean; there's a rename/rename conflict -test_expect_success 'setup rename/rename(1to2)/add-source conflict' ' +test_setup_rename_rename_1to2_add_source_1 () { test_create_repo rename-rename-1to2-add-source-1 && ( cd rename-rename-1to2-add-source-1 && @@ -560,9 +700,10 @@ test_expect_success 'setup rename/rename(1to2)/add-source conflict' ' git add a && git commit -m C ) -' +} test_expect_failure 'detect conflict with rename/rename(1to2)/add-source merge' ' + test_setup_rename_rename_1to2_add_source_1 && ( cd rename-rename-1to2-add-source-1 && @@ -587,7 +728,7 @@ test_expect_failure 'detect conflict with rename/rename(1to2)/add-source merge' ) ' -test_expect_success 'setup rename/rename(1to2)/add-source resolvable conflict' ' +test_setup_rename_rename_1to2_add_source_2 () { test_create_repo rename-rename-1to2-add-source-2 && ( cd rename-rename-1to2-add-source-2 && @@ -610,9 +751,10 @@ test_expect_success 'setup rename/rename(1to2)/add-source resolvable conflict' ' test_tick && git commit -m two ) -' +} test_expect_failure 'rename/rename/add-source still tracks new a file' ' + test_setup_rename_rename_1to2_add_source_2 && ( cd rename-rename-1to2-add-source-2 && @@ -632,7 +774,7 @@ test_expect_failure 'rename/rename/add-source still tracks new a file' ' ) ' -test_expect_success 'setup rename/rename(1to2)/add-dest conflict' ' +test_setup_rename_rename_1to2_add_dest () { test_create_repo rename-rename-1to2-add-dest && ( cd rename-rename-1to2-add-dest && @@ -657,9 +799,10 @@ test_expect_success 'setup rename/rename(1to2)/add-dest conflict' ' test_tick && git commit -m two ) -' +} test_expect_success 'rename/rename/add-dest merge still knows about conflicting file versions' ' + test_setup_rename_rename_1to2_add_dest && ( cd rename-rename-1to2-add-dest && @@ -673,7 +816,7 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting git ls-files -u c >out && test_line_count = 2 out && git ls-files -o >out && - test_line_count = 5 out && + test_line_count = 1 out && git rev-parse >expect \ A:a C:b B:b C:c B:c && @@ -681,14 +824,27 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting :1:a :2:b :3:b :2:c :3:c && test_cmp expect actual && - git rev-parse >expect \ - C:c B:c C:b B:b && - git hash-object >actual \ - c~HEAD c~B\^0 b~HEAD b~B\^0 && - test_cmp expect actual && + # Record some contents for re-doing merges + git cat-file -p A:a >stuff && + git cat-file -p C:b >important_info && + git cat-file -p B:c >precious_data && + >empty && - test_path_is_missing b && - test_path_is_missing c + # Test the merge in b + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "B^0" \ + important_info empty stuff && + test_cmp important_info b && + + # Test the merge in c + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "B^0" \ + stuff empty precious_data && + test_cmp stuff c ) ' @@ -698,7 +854,7 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting # Commit B: rename foo->bar # Expected: CONFLICT (rename/add/delete), two-way merged bar -test_expect_success 'rad-setup: rename/add/delete conflict' ' +test_setup_rad () { test_create_repo rad && ( cd rad && @@ -720,9 +876,10 @@ test_expect_success 'rad-setup: rename/add/delete conflict' ' git mv foo bar && git commit -m "rename foo to bar" ) -' +} test_expect_failure 'rad-check: rename/add/delete conflict' ' + test_setup_rad && ( cd rad && @@ -764,7 +921,7 @@ test_expect_failure 'rad-check: rename/add/delete conflict' ' # Commit B: rename bar->baz, rm foo # Expected: CONFLICT (rename/rename/delete/delete), two-way merged baz -test_expect_success 'rrdd-setup: rename/rename(2to1)/delete/delete conflict' ' +test_setup_rrdd () { test_create_repo rrdd && ( cd rrdd && @@ -787,9 +944,10 @@ test_expect_success 'rrdd-setup: rename/rename(2to1)/delete/delete conflict' ' git rm foo && git commit -m "Rename bar, remove foo" ) -' +} test_expect_failure 'rrdd-check: rename/rename(2to1)/delete/delete conflict' ' + test_setup_rrdd && ( cd rrdd && @@ -833,7 +991,7 @@ test_expect_failure 'rrdd-check: rename/rename(2to1)/delete/delete conflict' ' # Expected: six CONFLICT(rename/rename) messages, each path in two of the # multi-way merged contents found in two, four, six -test_expect_success 'mod6-setup: chains of rename/rename(1to2) and rename/rename(2to1)' ' +test_setup_mod6 () { test_create_repo mod6 && ( cd mod6 && @@ -869,9 +1027,10 @@ test_expect_success 'mod6-setup: chains of rename/rename(1to2) and rename/rename test_tick && git commit -m "B" ) -' +} test_expect_failure 'mod6-check: chains of rename/rename(1to2) and rename/rename(2to1)' ' + test_setup_mod6 && ( cd mod6 && @@ -937,4 +1096,287 @@ test_expect_failure 'mod6-check: chains of rename/rename(1to2) and rename/rename ) ' +test_conflicts_with_adds_and_renames() { + sideL=$1 + sideR=$2 + + # Setup: + # L + # / \ + # master ? + # \ / + # R + # + # Where: + # Both L and R have files named 'three' which collide. Each of + # the colliding files could have been involved in a rename, in + # which case there was a file named 'one' or 'two' that was + # modified on the opposite side of history and renamed into the + # collision on this side of history. + # + # Questions: + # 1) The index should contain both a stage 2 and stage 3 entry + # for the colliding file. Does it? + # 2) When renames are involved, the content merges are clean, so + # the index should reflect the content merges, not merely the + # version of the colliding file from the prior commit. Does + # it? + # 3) There should be a file in the worktree named 'three' + # containing the two-way merged contents of the content-merged + # versions of 'three' from each of the two colliding + # files. Is it present? + # 4) There should not be any three~* files in the working + # tree + test_setup_collision_conflict () { + #test_expect_success "setup simple $sideL/$sideR conflict" ' + test_create_repo simple_${sideL}_${sideR} && + ( + cd simple_${sideL}_${sideR} && + + # Create some related files now + for i in $(test_seq 1 10) + do + echo Random base content line $i + done >file_v1 && + cp file_v1 file_v2 && + echo modification >>file_v2 && + + cp file_v1 file_v3 && + echo more stuff >>file_v3 && + cp file_v3 file_v4 && + echo yet more stuff >>file_v4 && + + # Use a tag to record both these files for simple + # access, and clean out these untracked files + git tag file_v1 $(git hash-object -w file_v1) && + git tag file_v2 $(git hash-object -w file_v2) && + git tag file_v3 $(git hash-object -w file_v3) && + git tag file_v4 $(git hash-object -w file_v4) && + git clean -f && + + # Setup original commit (or merge-base), consisting of + # files named "one" and "two" if renames were involved. + touch irrelevant_file && + git add irrelevant_file && + if [ $sideL = "rename" ] + then + git show file_v1 >one && + git add one + fi && + if [ $sideR = "rename" ] + then + git show file_v3 >two && + git add two + fi && + test_tick && git commit -m initial && + + git branch L && + git branch R && + + # Handle the left side + git checkout L && + if [ $sideL = "rename" ] + then + git mv one three + else + git show file_v2 >three && + git add three + fi && + if [ $sideR = "rename" ] + then + git show file_v4 >two && + git add two + fi && + test_tick && git commit -m L && + + # Handle the right side + git checkout R && + if [ $sideL = "rename" ] + then + git show file_v2 >one && + git add one + fi && + if [ $sideR = "rename" ] + then + git mv two three + else + git show file_v4 >three && + git add three + fi && + test_tick && git commit -m R + ) + #' + } + + test_expect_success "check simple $sideL/$sideR conflict" ' + test_setup_collision_conflict && + ( + cd simple_${sideL}_${sideR} && + + git checkout L^0 && + + # Merge must fail; there is a conflict + test_must_fail git merge -s recursive R^0 && + + # Make sure the index has the right number of entries + git ls-files -s >out && + test_line_count = 3 out && + git ls-files -u >out && + test_line_count = 2 out && + # Ensure we have the correct number of untracked files + git ls-files -o >out && + test_line_count = 1 out && + + # Nothing should have touched irrelevant_file + git rev-parse >actual \ + :0:irrelevant_file \ + :2:three \ + :3:three && + git rev-parse >expected \ + master:irrelevant_file \ + file_v2 \ + file_v4 && + test_cmp expected actual && + + # Make sure we have the correct merged contents for + # three + git show file_v1 >expected && + cat <<-\EOF >>expected && + <<<<<<< HEAD + modification + ======= + more stuff + yet more stuff + >>>>>>> R^0 + EOF + + test_cmp expected three + ) + ' +} + +test_conflicts_with_adds_and_renames rename rename +test_conflicts_with_adds_and_renames rename add +test_conflicts_with_adds_and_renames add rename +test_conflicts_with_adds_and_renames add add + +# Setup: +# L +# / \ +# master ? +# \ / +# R +# +# Where: +# master has two files, named 'one' and 'two'. +# branches L and R both modify 'one', in conflicting ways. +# branches L and R both modify 'two', in conflicting ways. +# branch L also renames 'one' to 'three'. +# branch R also renames 'two' to 'three'. +# +# So, we have four different conflicting files that all end up at path +# 'three'. +test_setup_nested_conflicts_from_rename_rename () { + test_create_repo nested_conflicts_from_rename_rename && + ( + cd nested_conflicts_from_rename_rename && + + # Create some related files now + for i in $(test_seq 1 10) + do + echo Random base content line $i + done >file_v1 && + + cp file_v1 file_v2 && + cp file_v1 file_v3 && + cp file_v1 file_v4 && + cp file_v1 file_v5 && + cp file_v1 file_v6 && + + echo one >>file_v1 && + echo uno >>file_v2 && + echo eins >>file_v3 && + + echo two >>file_v4 && + echo dos >>file_v5 && + echo zwei >>file_v6 && + + # Setup original commit (or merge-base), consisting of + # files named "one" and "two". + mv file_v1 one && + mv file_v4 two && + git add one two && + test_tick && git commit -m english && + + git branch L && + git branch R && + + # Handle the left side + git checkout L && + git rm one two && + mv -f file_v2 three && + mv -f file_v5 two && + git add two three && + test_tick && git commit -m spanish && + + # Handle the right side + git checkout R && + git rm one two && + mv -f file_v3 one && + mv -f file_v6 three && + git add one three && + test_tick && git commit -m german + ) +} + +test_expect_success 'check nested conflicts from rename/rename(2to1)' ' + test_setup_nested_conflicts_from_rename_rename && + ( + cd nested_conflicts_from_rename_rename && + + git checkout L^0 && + + # Merge must fail; there is a conflict + test_must_fail git merge -s recursive R^0 && + + # Make sure the index has the right number of entries + git ls-files -s >out && + test_line_count = 2 out && + git ls-files -u >out && + test_line_count = 2 out && + # Ensure we have the correct number of untracked files + git ls-files -o >out && + test_line_count = 1 out && + + # Compare :2:three to expected values + git cat-file -p master:one >base && + git cat-file -p L:three >ours && + git cat-file -p R:one >theirs && + test_must_fail git merge-file \ + -L "HEAD:three" -L "" -L "R^0:one" \ + ours base theirs && + sed -e "s/^\([<=>]\)/\1\1/" ours >L-three && + git cat-file -p :2:three >expect && + test_cmp expect L-three && + + # Compare :2:three to expected values + git cat-file -p master:two >base && + git cat-file -p L:two >ours && + git cat-file -p R:three >theirs && + test_must_fail git merge-file \ + -L "HEAD:two" -L "" -L "R^0:three" \ + ours base theirs && + sed -e "s/^\([<=>]\)/\1\1/" ours >R-three && + git cat-file -p :3:three >expect && + test_cmp expect R-three && + + # Compare three to expected contents + >empty && + test_must_fail git merge-file \ + -L "HEAD" -L "" -L "R^0" \ + L-three empty R-three && + test_cmp three L-three + ) +' + test_done |