Merge branch 'en/merge-recursive-2'

* en/merge-recursive-2: (57 commits)
  merge-recursive: Don't re-sort a list whose order we depend upon
  merge-recursive: Fix virtual merge base for rename/rename(1to2)/add-dest
  t6036: criss-cross + rename/rename(1to2)/add-dest + simple modify
  merge-recursive: Avoid unnecessary file rewrites
  t6022: Additional tests checking for unnecessary updates of files
  merge-recursive: Fix spurious 'refusing to lose untracked file...' messages
  t6022: Add testcase for spurious "refusing to lose untracked" messages
  t3030: fix accidental success in symlink rename
  merge-recursive: Fix working copy handling for rename/rename/add/add
  merge-recursive: add handling for rename/rename/add-dest/add-dest
  merge-recursive: Have conflict_rename_delete reuse modify/delete code
  merge-recursive: Make modify/delete handling code reusable
  merge-recursive: Consider modifications in rename/rename(2to1) conflicts
  merge-recursive: Create function for merging with branchname:file markers
  merge-recursive: Record more data needed for merging with dual renames
  merge-recursive: Defer rename/rename(2to1) handling until process_entry
  merge-recursive: Small cleanups for conflict_rename_rename_1to2
  merge-recursive: Fix rename/rename(1to2) resolution for virtual merge base
  merge-recursive: Introduce a merge_file convenience function
  merge-recursive: Fix modify/delete resolution in the recursive case
  ...
This commit is contained in:
Junio C Hamano 2011-09-02 10:00:18 -07:00
commit 96b7c4deb8
10 changed files with 2174 additions and 434 deletions

View File

@ -29,6 +29,9 @@ member (you need this if you add things later) and you should set the
. Can sort an unsorted list using `sort_string_list`. . Can sort an unsorted list using `sort_string_list`.
. Can remove individual items of an unsorted list using
`unsorted_string_list_delete_item`.
. Finally it should free the list using `string_list_clear`. . Finally it should free the list using `string_list_clear`.
Example: Example:
@ -112,6 +115,13 @@ write `string_list_insert(...)->util = ...;`.
The above two functions need to look through all items, as opposed to their The above two functions need to look through all items, as opposed to their
counterpart for sorted lists, which performs a binary search. counterpart for sorted lists, which performs a binary search.
`unsorted_string_list_delete_item`::
Remove an item from a string_list. The `string` pointer of the items
will be freed in case the `strdup_strings` member of the string_list
is set. The third parameter controls if the `util` pointer of the
items should be freed or not.
Data structures Data structures
--------------- ---------------

File diff suppressed because it is too large Load Diff

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@ -26,6 +26,7 @@ struct merge_options {
struct strbuf obuf; struct strbuf obuf;
struct string_list current_file_set; struct string_list current_file_set;
struct string_list current_directory_set; struct string_list current_directory_set;
struct string_list df_conflict_file_set;
}; };
/* merge_trees() but with recursive ancestor consolidation */ /* merge_trees() but with recursive ancestor consolidation */

View File

@ -185,3 +185,12 @@ int unsorted_string_list_has_string(struct string_list *list,
return unsorted_string_list_lookup(list, string) != NULL; return unsorted_string_list_lookup(list, string) != NULL;
} }
void unsorted_string_list_delete_item(struct string_list *list, int i, int free_util)
{
if (list->strdup_strings)
free(list->items[i].string);
if (free_util)
free(list->items[i].util);
list->items[i] = list->items[list->nr-1];
list->nr--;
}

View File

@ -44,4 +44,5 @@ void sort_string_list(struct string_list *list);
int unsorted_string_list_has_string(struct string_list *list, const char *string); int unsorted_string_list_has_string(struct string_list *list, const char *string);
struct string_list_item *unsorted_string_list_lookup(struct string_list *list, struct string_list_item *unsorted_string_list_lookup(struct string_list *list,
const char *string); const char *string);
void unsorted_string_list_delete_item(struct string_list *list, int i, int free_util);
#endif /* STRING_LIST_H */ #endif /* STRING_LIST_H */

View File

@ -267,7 +267,8 @@ test_expect_success 'setup 8' '
ln -s e a && ln -s e a &&
git add a e && git add a e &&
test_tick && test_tick &&
git commit -m "rename a->e, symlink a->e" git commit -m "rename a->e, symlink a->e" &&
oln=`printf e | git hash-object --stdin`
fi fi
' '
@ -630,16 +631,18 @@ test_expect_success 'merge-recursive copy vs. rename' '
if test_have_prereq SYMLINKS if test_have_prereq SYMLINKS
then then
test_expect_success 'merge-recursive rename vs. rename/symlink' ' test_expect_failure 'merge-recursive rename vs. rename/symlink' '
git checkout -f rename && git checkout -f rename &&
git merge rename-ln && git merge rename-ln &&
( git ls-tree -r HEAD ; git ls-files -s ) >actual && ( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
( (
echo "120000 blob $oln a"
echo "100644 blob $o0 b" echo "100644 blob $o0 b"
echo "100644 blob $o0 c" echo "100644 blob $o0 c"
echo "100644 blob $o0 d/e" echo "100644 blob $o0 d/e"
echo "100644 blob $o0 e" echo "100644 blob $o0 e"
echo "120000 $oln 0 a"
echo "100644 $o0 0 b" echo "100644 $o0 0 b"
echo "100644 $o0 0 c" echo "100644 $o0 0 c"
echo "100644 $o0 0 d/e" echo "100644 $o0 0 d/e"

View File

@ -59,15 +59,19 @@ test_expect_success 'setup modify/delete + directory/file conflict' '
git add letters && git add letters &&
git commit -m initial && git commit -m initial &&
# Throw in letters.txt for sorting order fun
# ("letters.txt" sorts between "letters" and "letters/file")
echo i >>letters && echo i >>letters &&
git add letters && echo "version 2" >letters.txt &&
git add letters letters.txt &&
git commit -m modified && git commit -m modified &&
git checkout -b delete HEAD^ && git checkout -b delete HEAD^ &&
git rm letters && git rm letters &&
mkdir letters && mkdir letters &&
>letters/file && >letters/file &&
git add letters && echo "version 1" >letters.txt &&
git add letters letters.txt &&
git commit -m deleted git commit -m deleted
' '
@ -75,25 +79,31 @@ test_expect_success 'modify/delete + directory/file conflict' '
git checkout delete^0 && git checkout delete^0 &&
test_must_fail git merge modify && test_must_fail git merge modify &&
test 3 = $(git ls-files -s | wc -l) && test 5 -eq $(git ls-files -s | wc -l) &&
test 2 = $(git ls-files -u | wc -l) && test 4 -eq $(git ls-files -u | wc -l) &&
test 1 = $(git ls-files -o | wc -l) && test 1 -eq $(git ls-files -o | wc -l) &&
test -f letters/file && test -f letters/file &&
test -f letters.txt &&
test -f letters~modify test -f letters~modify
' '
test_expect_success 'modify/delete + directory/file conflict; other way' ' test_expect_success 'modify/delete + directory/file conflict; other way' '
# Yes, we really need the double reset since "letters" appears as
# both a file and a directory.
git reset --hard &&
git reset --hard && git reset --hard &&
git clean -f && git clean -f &&
git checkout modify^0 && git checkout modify^0 &&
test_must_fail git merge delete && test_must_fail git merge delete &&
test 3 = $(git ls-files -s | wc -l) && test 5 -eq $(git ls-files -s | wc -l) &&
test 2 = $(git ls-files -u | wc -l) && test 4 -eq $(git ls-files -u | wc -l) &&
test 1 = $(git ls-files -o | wc -l) && test 1 -eq $(git ls-files -o | wc -l) &&
test -f letters/file && test -f letters/file &&
test -f letters.txt &&
test -f letters~HEAD test -f letters~HEAD
' '

View File

@ -252,6 +252,7 @@ test_expect_success 'setup for rename + d/f conflicts' '
git reset --hard && git reset --hard &&
git checkout --orphan dir-in-way && git checkout --orphan dir-in-way &&
git rm -rf . && git rm -rf . &&
git clean -fdqx &&
mkdir sub && mkdir sub &&
mkdir dir && mkdir dir &&
@ -302,11 +303,11 @@ test_expect_success 'Rename+D/F conflict; renamed file merges but dir in way' '
git checkout -q renamed-file-has-no-conflicts^0 && git checkout -q renamed-file-has-no-conflicts^0 &&
test_must_fail git merge --strategy=recursive dir-in-way >output && test_must_fail git merge --strategy=recursive dir-in-way >output &&
grep "CONFLICT (delete/modify): dir/file-in-the-way" output && grep "CONFLICT (modify/delete): dir/file-in-the-way" output &&
grep "Auto-merging dir" output && grep "Auto-merging dir" output &&
grep "Adding as dir~HEAD instead" output && grep "Adding as dir~HEAD instead" output &&
test 2 -eq "$(git ls-files -u | wc -l)" && test 3 -eq "$(git ls-files -u | wc -l)" &&
test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" && test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
test_must_fail git diff --quiet && test_must_fail git diff --quiet &&
@ -324,11 +325,11 @@ test_expect_success 'Same as previous, but merged other way' '
test_must_fail git merge --strategy=recursive renamed-file-has-no-conflicts >output 2>errors && test_must_fail git merge --strategy=recursive renamed-file-has-no-conflicts >output 2>errors &&
! grep "error: refusing to lose untracked file at" errors && ! grep "error: refusing to lose untracked file at" errors &&
grep "CONFLICT (delete/modify): dir/file-in-the-way" output && grep "CONFLICT (modify/delete): dir/file-in-the-way" output &&
grep "Auto-merging dir" output && grep "Auto-merging dir" output &&
grep "Adding as dir~renamed-file-has-no-conflicts instead" output && grep "Adding as dir~renamed-file-has-no-conflicts instead" output &&
test 2 -eq "$(git ls-files -u | wc -l)" && test 3 -eq "$(git ls-files -u | wc -l)" &&
test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" && test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
test_must_fail git diff --quiet && test_must_fail git diff --quiet &&
@ -350,11 +351,11 @@ cat >expected <<\EOF &&
8 8
9 9
10 10
<<<<<<< HEAD <<<<<<< HEAD:dir
12 12
======= =======
11 11
>>>>>>> dir-not-in-way >>>>>>> dir-not-in-way:sub/file
EOF EOF
test_expect_success 'Rename+D/F conflict; renamed file cannot merge, dir not in way' ' test_expect_success 'Rename+D/F conflict; renamed file cannot merge, dir not in way' '
@ -404,11 +405,11 @@ cat >expected <<\EOF &&
8 8
9 9
10 10
<<<<<<< HEAD <<<<<<< HEAD:sub/file
11 11
======= =======
12 12
>>>>>>> renamed-file-has-conflicts >>>>>>> renamed-file-has-conflicts:dir
EOF EOF
test_expect_success 'Same as previous, but merged other way' ' test_expect_success 'Same as previous, but merged other way' '
@ -609,4 +610,278 @@ test_expect_success 'check handling of differently renamed file with D/F conflic
! test -f original ! 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 commmit" &&
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 commmit" &&
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_done test_done

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@ -1,9 +1,15 @@
#!/bin/sh #!/bin/sh
test_description='recursive merge corner cases' test_description='recursive merge corner cases involving criss-cross merges'
. ./test-lib.sh . ./test-lib.sh
get_clean_checkout () {
git reset --hard &&
git clean -fdqx &&
git checkout "$1"
}
# #
# L1 L2 # L1 L2
# o---o # o---o
@ -51,23 +57,15 @@ test_expect_success 'merge simple rename+criss-cross with no modifications' '
test_must_fail git merge -s recursive R2^0 && test_must_fail git merge -s recursive R2^0 &&
test 5 = $(git ls-files -s | wc -l) && test 2 = $(git ls-files -s | wc -l) &&
test 3 = $(git ls-files -u | wc -l) && test 2 = $(git ls-files -u | wc -l) &&
test 0 = $(git ls-files -o | wc -l) && test 2 = $(git ls-files -o | wc -l) &&
test $(git rev-parse :0:one) = $(git rev-parse L2:one) &&
test $(git rev-parse :0:two) = $(git rev-parse R2:two) &&
test $(git rev-parse :2:three) = $(git rev-parse L2:three) && test $(git rev-parse :2:three) = $(git rev-parse L2:three) &&
test $(git rev-parse :3:three) = $(git rev-parse R2:three) && test $(git rev-parse :3:three) = $(git rev-parse R2:three) &&
cp two merged && test $(git rev-parse L2:three) = $(git hash-object three~HEAD) &&
>empty && test $(git rev-parse R2:three) = $(git hash-object three~R2^0)
test_must_fail git merge-file \
-L "Temporary merge branch 2" \
-L "" \
-L "Temporary merge branch 1" \
merged empty one &&
test $(git rev-parse :1:three) = $(git hash-object merged)
' '
# #
@ -126,24 +124,15 @@ test_expect_success 'merge criss-cross + rename merges with basic modification'
test_must_fail git merge -s recursive R2^0 && test_must_fail git merge -s recursive R2^0 &&
test 5 = $(git ls-files -s | wc -l) && test 2 = $(git ls-files -s | wc -l) &&
test 3 = $(git ls-files -u | wc -l) && test 2 = $(git ls-files -u | wc -l) &&
test 0 = $(git ls-files -o | wc -l) && test 2 = $(git ls-files -o | wc -l) &&
test $(git rev-parse :0:one) = $(git rev-parse L2:one) &&
test $(git rev-parse :0:two) = $(git rev-parse R2:two) &&
test $(git rev-parse :2:three) = $(git rev-parse L2:three) && test $(git rev-parse :2:three) = $(git rev-parse L2:three) &&
test $(git rev-parse :3:three) = $(git rev-parse R2:three) && test $(git rev-parse :3:three) = $(git rev-parse R2:three) &&
head -n 10 two >merged && test $(git rev-parse L2:three) = $(git hash-object three~HEAD) &&
cp one merge-me && test $(git rev-parse R2:three) = $(git hash-object three~R2^0)
>empty &&
test_must_fail git merge-file \
-L "Temporary merge branch 2" \
-L "" \
-L "Temporary merge branch 1" \
merged empty merge-me &&
test $(git rev-parse :1:three) = $(git hash-object merged)
' '
# #
@ -231,4 +220,557 @@ test_expect_success 'git detects differently handled merges conflict' '
test $(git rev-parse :1:new_a) = $(git hash-object merged) test $(git rev-parse :1:new_a) = $(git hash-object merged)
' '
#
# criss-cross + modify/delete:
#
# B D
# o---o
# / \ / \
# A o X ? F
# \ / \ /
# o---o
# C E
#
# Commit A: file with contents 'A\n'
# Commit B: file with contents 'B\n'
# Commit C: file not present
# Commit D: file with contents 'B\n'
# Commit E: file not present
#
# Merging commits D & E should result in modify/delete conflict.
test_expect_success 'setup criss-cross + modify/delete resolved differently' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
echo A >file &&
git add file &&
test_tick &&
git commit -m A &&
git branch B &&
git checkout -b C &&
git rm file &&
test_tick &&
git commit -m C &&
git checkout B &&
echo B >file &&
git add file &&
test_tick &&
git commit -m B &&
git checkout B^0 &&
test_must_fail git merge C &&
echo B >file &&
git add file &&
test_tick &&
git commit -m D &&
git tag D &&
git checkout C^0 &&
test_must_fail git merge B &&
git rm file &&
test_tick &&
git commit -m E &&
git tag E
'
test_expect_success 'git detects conflict merging criss-cross+modify/delete' '
git checkout D^0 &&
test_must_fail git merge -s recursive E^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 2 -eq $(git ls-files -u | wc -l) &&
test $(git rev-parse :1:file) = $(git rev-parse master:file) &&
test $(git rev-parse :2:file) = $(git rev-parse B:file)
'
test_expect_success 'git detects conflict merging criss-cross+modify/delete, reverse direction' '
git reset --hard &&
git checkout E^0 &&
test_must_fail git merge -s recursive D^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 2 -eq $(git ls-files -u | wc -l) &&
test $(git rev-parse :1:file) = $(git rev-parse master:file) &&
test $(git rev-parse :3:file) = $(git rev-parse B:file)
'
#
# criss-cross + modify/modify with very contrived file contents:
#
# B D
# o---o
# / \ / \
# A o X ? F
# \ / \ /
# o---o
# C E
#
# Commit A: file with contents 'A\n'
# Commit B: file with contents 'B\n'
# Commit C: file with contents 'C\n'
# Commit D: file with contents 'D\n'
# Commit E: file with contents:
# <<<<<<< Temporary merge branch 1
# C
# =======
# B
# >>>>>>> Temporary merge branch 2
#
# Now, when we merge commits D & E, does git detect the conflict?
test_expect_success 'setup differently handled merges of content conflict' '
git clean -fdqx &&
rm -rf .git &&
git init &&
echo A >file &&
git add file &&
test_tick &&
git commit -m A &&
git branch B &&
git checkout -b C &&
echo C >file &&
git add file &&
test_tick &&
git commit -m C &&
git checkout B &&
echo B >file &&
git add file &&
test_tick &&
git commit -m B &&
git checkout B^0 &&
test_must_fail git merge C &&
echo D >file &&
git add file &&
test_tick &&
git commit -m D &&
git tag D &&
git checkout C^0 &&
test_must_fail git merge B &&
cat <<EOF >file &&
<<<<<<< Temporary merge branch 1
C
=======
B
>>>>>>> Temporary merge branch 2
EOF
git add file &&
test_tick &&
git commit -m E &&
git tag E
'
test_expect_failure 'git detects conflict w/ criss-cross+contrived resolution' '
git checkout D^0 &&
test_must_fail git merge -s recursive E^0 &&
test 3 -eq $(git ls-files -s | wc -l) &&
test 3 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse :2:file) = $(git rev-parse D:file) &&
test $(git rev-parse :3:file) = $(git rev-parse E:file)
'
#
# criss-cross + d/f conflict via add/add:
# Commit A: Neither file 'a' nor directory 'a/' exist.
# Commit B: Introduce 'a'
# Commit C: Introduce 'a/file'
# Commit D: Merge B & C, keeping 'a' and deleting 'a/'
#
# Two different later cases:
# Commit E1: Merge B & C, deleting 'a' but keeping 'a/file'
# Commit E2: Merge B & C, deleting 'a' but keeping a slightly modified 'a/file'
#
# B D
# o---o
# / \ / \
# A o X ? F
# \ / \ /
# o---o
# C E1 or E2
#
# Merging D & E1 requires we first create a virtual merge base X from
# merging A & B in memory. Now, if X could keep both 'a' and 'a/file' in
# the index, then the merge of D & E1 could be resolved cleanly with both
# 'a' and 'a/file' removed. Since git does not currently allow creating
# such a tree, the best we can do is have X contain both 'a~<unique>' and
# 'a/file' resulting in the merge of D and E1 having a rename/delete
# conflict for 'a'. (Although this merge appears to be unsolvable with git
# currently, git could do a lot better than it currently does with these
# d/f conflicts, which is the purpose of this test.)
#
# Merge of D & E2 has similar issues for path 'a', but should always result
# in a modify/delete conflict for path 'a/file'.
#
# We run each merge in both directions, to check for directional issues
# with D/F conflict handling.
#
test_expect_success 'setup differently handled merges of directory/file conflict' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
>ignore-me &&
git add ignore-me &&
test_tick &&
git commit -m A &&
git tag A &&
git branch B &&
git checkout -b C &&
mkdir a &&
echo 10 >a/file &&
git add a/file &&
test_tick &&
git commit -m C &&
git checkout B &&
echo 5 >a &&
git add a &&
test_tick &&
git commit -m B &&
git checkout B^0 &&
test_must_fail git merge C &&
git clean -f &&
rm -rf a/ &&
echo 5 >a &&
git add a &&
test_tick &&
git commit -m D &&
git tag D &&
git checkout C^0 &&
test_must_fail git merge B &&
git clean -f &&
git rm --cached a &&
echo 10 >a/file &&
git add a/file &&
test_tick &&
git commit -m E1 &&
git tag E1 &&
git checkout C^0 &&
test_must_fail git merge B &&
git clean -f &&
git rm --cached a &&
printf "10\n11\n" >a/file &&
git add a/file &&
test_tick &&
git commit -m E2 &&
git tag E2
'
test_expect_success 'merge of D & E1 fails but has appropriate contents' '
get_clean_checkout D^0 &&
test_must_fail git merge -s recursive E1^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 1 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
test $(git rev-parse :2:a) = $(git rev-parse B:a)
'
test_expect_success 'merge of E1 & D fails but has appropriate contents' '
get_clean_checkout E1^0 &&
test_must_fail git merge -s recursive D^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 1 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
test $(git rev-parse :3:a) = $(git rev-parse B:a)
'
test_expect_success 'merge of D & E2 fails but has appropriate contents' '
get_clean_checkout D^0 &&
test_must_fail git merge -s recursive E2^0 &&
test 4 -eq $(git ls-files -s | wc -l) &&
test 3 -eq $(git ls-files -u | wc -l) &&
test 1 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse :2:a) = $(git rev-parse B:a) &&
test $(git rev-parse :3:a/file) = $(git rev-parse E2:a/file) &&
test $(git rev-parse :1:a/file) = $(git rev-parse C:a/file) &&
test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
test -f a~HEAD
'
test_expect_success 'merge of E2 & D fails but has appropriate contents' '
get_clean_checkout E2^0 &&
test_must_fail git merge -s recursive D^0 &&
test 4 -eq $(git ls-files -s | wc -l) &&
test 3 -eq $(git ls-files -u | wc -l) &&
test 1 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse :3:a) = $(git rev-parse B:a) &&
test $(git rev-parse :2:a/file) = $(git rev-parse E2:a/file) &&
test $(git rev-parse :1:a/file) = $(git rev-parse C:a/file)
test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
test -f a~D^0
'
#
# criss-cross with rename/rename(1to2)/modify followed by
# rename/rename(2to1)/modify:
#
# B D
# o---o
# / \ / \
# A o X ? F
# \ / \ /
# o---o
# C E
#
# Commit A: new file: a
# Commit B: rename a->b, modifying by adding a line
# Commit C: rename a->c
# Commit D: merge B&C, resolving conflict by keeping contents in newname
# Commit E: merge B&C, resolving conflict similar to D but adding another line
#
# There is a conflict merging B & C, but one of filename not of file
# content. Whoever created D and E chose specific resolutions for that
# conflict resolution. Now, since: (1) there is no content conflict
# merging B & C, (2) D does not modify that merged content further, and (3)
# both D & E resolve the name conflict in the same way, the modification to
# newname in E should not cause any conflicts when it is merged with D.
# (Note that this can be accomplished by having the virtual merge base have
# the merged contents of b and c stored in a file named a, which seems like
# the most logical choice anyway.)
#
# Comment from Junio: I do not necessarily agree with the choice "a", but
# it feels sound to say "B and C do not agree what the final pathname
# should be, but we know this content was derived from the common A:a so we
# use one path whose name is arbitrary in the virtual merge base X between
# D and E" and then further let the rename detection to notice that that
# arbitrary path gets renamed between X-D to "newname" and X-E also to
# "newname" to resolve it as both sides renaming it to the same new
# name. It is akin to what we do at the content level, i.e. "B and C do not
# agree what the final contents should be, so we leave the conflict marker
# but that may cancel out at the final merge stage".
test_expect_success 'setup rename/rename(1to2)/modify followed by what looks like rename/rename(2to1)/modify' '
git reset --hard &&
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "1\n2\n3\n4\n5\n6\n" >a &&
git add a &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a b &&
echo 7 >>b &&
git add -u &&
git commit -m B &&
git checkout -b C A &&
git mv a c &&
git commit -m C &&
git checkout -q B^0 &&
git merge --no-commit -s ours C^0 &&
git mv b newname &&
git commit -m "Merge commit C^0 into HEAD" &&
git tag D &&
git checkout -q C^0 &&
git merge --no-commit -s ours B^0 &&
git mv c newname &&
printf "7\n8\n" >>newname &&
git add -u &&
git commit -m "Merge commit B^0 into HEAD" &&
git tag E
'
test_expect_success 'handle rename/rename(1to2)/modify followed by what looks like rename/rename(2to1)/modify' '
git checkout D^0 &&
git merge -s recursive E^0 &&
test 1 -eq $(git ls-files -s | wc -l) &&
test 0 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse HEAD:newname) = $(git rev-parse E:newname)
'
#
# criss-cross with rename/rename(1to2)/add-source + resolvable modify/modify:
#
# B D
# o---o
# / \ / \
# A o X ? F
# \ / \ /
# o---o
# C E
#
# Commit A: new file: a
# Commit B: rename a->b
# Commit C: rename a->c, add different a
# Commit D: merge B&C, keeping b&c and (new) a modified at beginning
# Commit E: merge B&C, keeping b&c and (new) a modified at end
#
# Merging commits D & E should result in no conflict; doing so correctly
# requires getting the virtual merge base (from merging B&C) right, handling
# renaming carefully (both in the virtual merge base and later), and getting
# content merge handled.
test_expect_success 'setup criss-cross + rename/rename/add + modify/modify' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "lots\nof\nwords\nand\ncontent\n" >a &&
git add a &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a b &&
git commit -m B &&
git checkout -b C A &&
git mv a c &&
printf "2\n3\n4\n5\n6\n7\n" >a &&
git add a &&
git commit -m C &&
git checkout B^0 &&
git merge --no-commit -s ours C^0 &&
git checkout C -- a c &&
mv a old_a &&
echo 1 >a &&
cat old_a >>a &&
rm old_a &&
git add -u &&
git commit -m "Merge commit C^0 into HEAD" &&
git tag D &&
git checkout C^0 &&
git merge --no-commit -s ours B^0 &&
git checkout B -- b &&
echo 8 >>a &&
git add -u &&
git commit -m "Merge commit B^0 into HEAD" &&
git tag E
'
test_expect_failure 'detect rename/rename/add-source for virtual merge-base' '
git checkout D^0 &&
git merge -s recursive E^0 &&
test 3 -eq $(git ls-files -s | wc -l) &&
test 0 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
test $(git rev-parse HEAD:c) = $(git rev-parse A:a) &&
test "$(cat a)" = "$(printf "1\n2\n3\n4\n5\n6\n7\n8\n")"
'
#
# criss-cross with rename/rename(1to2)/add-dest + simple modify:
#
# B D
# o---o
# / \ / \
# A o X ? F
# \ / \ /
# o---o
# C E
#
# Commit A: new file: a
# Commit B: rename a->b, add c
# Commit C: rename a->c
# Commit D: merge B&C, keeping A:a and B:c
# Commit E: merge B&C, keeping A:a and slightly modified c from B
#
# Merging commits D & E should result in no conflict. The virtual merge
# base of B & C needs to not delete B:c for that to work, though...
test_expect_success 'setup criss-cross+rename/rename/add-dest + simple modify' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
>a &&
git add a &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a b &&
printf "1\n2\n3\n4\n5\n6\n7\n" >c &&
git add c &&
git commit -m B &&
git checkout -b C A &&
git mv a c &&
git commit -m C &&
git checkout B^0 &&
git merge --no-commit -s ours C^0 &&
git mv b a &&
git commit -m "D is like B but renames b back to a" &&
git tag D &&
git checkout B^0 &&
git merge --no-commit -s ours C^0 &&
git mv b a &&
echo 8 >>c &&
git add c &&
git commit -m "E like D but has mod in c" &&
git tag E
'
test_expect_success 'virtual merge base handles rename/rename(1to2)/add-dest' '
git checkout D^0 &&
git merge -s recursive E^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 0 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse HEAD:a) = $(git rev-parse A:a) &&
test $(git rev-parse HEAD:c) = $(git rev-parse E:c)
'
test_done test_done

View File

@ -0,0 +1,578 @@
#!/bin/sh
test_description="recursive merge corner cases w/ renames but not criss-crosses"
# t6036 has corner cases that involve both criss-cross merges and renames
. ./test-lib.sh
test_expect_success 'setup rename/delete + untracked file' '
echo "A pretty inscription" >ring &&
git add ring &&
test_tick &&
git commit -m beginning &&
git branch people &&
git checkout -b rename-the-ring &&
git mv ring one-ring-to-rule-them-all &&
test_tick &&
git commit -m fullname &&
git checkout people &&
git rm ring &&
echo gollum >owner &&
git add owner &&
test_tick &&
git commit -m track-people-instead-of-objects &&
echo "Myyy PRECIOUSSS" >ring
'
test_expect_success "Does git preserve Gollum's precious artifact?" '
test_must_fail git merge -s recursive rename-the-ring &&
# Make sure git did not delete an untracked file
test -f ring
'
# Testcase setup for rename/modify/add-source:
# Commit A: new file: a
# Commit B: modify a slightly
# Commit C: rename a->b, add completely different a
#
# We should be able to merge B & C cleanly
test_expect_success 'setup rename/modify/add-source conflict' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
git add a &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
echo 8 >>a &&
git add a &&
git commit -m B &&
git checkout -b C A &&
git mv a b &&
echo something completely different >a &&
git add a &&
git commit -m C
'
test_expect_failure 'rename/modify/add-source conflict resolvable' '
git checkout B^0 &&
git merge -s recursive C^0 &&
test $(git rev-parse B:a) = $(git rev-parse b) &&
test $(git rev-parse C:a) = $(git rev-parse a)
'
test_expect_success 'setup resolvable conflict missed if rename missed' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "1\n2\n3\n4\n5\n" >a &&
echo foo >b &&
git add a b &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a c &&
echo "Completely different content" >a &&
git add a &&
git commit -m B &&
git checkout -b C A &&
echo 6 >>a &&
git add a &&
git commit -m C
'
test_expect_failure 'conflict caused if rename not detected' '
git checkout -q C^0 &&
git merge -s recursive B^0 &&
test 3 -eq $(git ls-files -s | wc -l) &&
test 0 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test 6 -eq $(wc -l < c) &&
test $(git rev-parse HEAD:a) = $(git rev-parse B:a) &&
test $(git rev-parse HEAD:b) = $(git rev-parse A:b)
'
test_expect_success 'setup conflict resolved wrong if rename missed' '
git reset --hard &&
git clean -f &&
git checkout -b D A &&
echo 7 >>a &&
git add a &&
git mv a c &&
echo "Completely different content" >a &&
git add a &&
git commit -m D &&
git checkout -b E A &&
git rm a &&
echo "Completely different content" >>a &&
git add a &&
git commit -m E
'
test_expect_failure 'missed conflict if rename not detected' '
git checkout -q E^0 &&
test_must_fail git merge -s recursive D^0
'
# Tests for undetected rename/add-source causing a file to erroneously be
# deleted (and for mishandled rename/rename(1to1) causing the same issue).
#
# This test uses a rename/rename(1to1)+add-source conflict (1to1 means the
# same file is renamed on both sides to the same thing; it should trigger
# the 1to2 logic, which it would do if the add-source didn't cause issues
# for git's rename detection):
# Commit A: new file: a
# Commit B: rename a->b
# Commit C: rename a->b, add unrelated a
test_expect_success 'setup undetected rename/add-source causes data loss' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "1\n2\n3\n4\n5\n" >a &&
git add a &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a b &&
git commit -m B &&
git checkout -b C A &&
git mv a b &&
echo foobar >a &&
git add a &&
git commit -m C
'
test_expect_failure 'detect rename/add-source and preserve all data' '
git checkout B^0 &&
git merge -s recursive C^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 2 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test -f a &&
test -f b &&
test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
'
test_expect_failure 'detect rename/add-source and preserve all data, merge other way' '
git checkout C^0 &&
git merge -s recursive B^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 2 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test -f a &&
test -f b &&
test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
'
test_expect_success 'setup content merge + rename/directory conflict' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "1\n2\n3\n4\n5\n6\n" >file &&
git add file &&
test_tick &&
git commit -m base &&
git tag base &&
git checkout -b right &&
echo 7 >>file &&
mkdir newfile &&
echo junk >newfile/realfile &&
git add file newfile/realfile &&
test_tick &&
git commit -m right &&
git checkout -b left-conflict base &&
echo 8 >>file &&
git add file &&
git mv file newfile &&
test_tick &&
git commit -m left &&
git checkout -b left-clean base &&
echo 0 >newfile &&
cat file >>newfile &&
git add newfile &&
git rm file &&
test_tick &&
git commit -m left
'
test_expect_success 'rename/directory conflict + clean content merge' '
git reset --hard &&
git reset --hard &&
git clean -fdqx &&
git checkout left-clean^0 &&
test_must_fail git merge -s recursive right^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 1 -eq $(git ls-files -u | wc -l) &&
test 1 -eq $(git ls-files -o | wc -l) &&
echo 0 >expect &&
git cat-file -p base:file >>expect &&
echo 7 >>expect &&
test_cmp expect newfile~HEAD &&
test $(git rev-parse :2:newfile) = $(git hash-object expect) &&
test -f newfile/realfile &&
test -f newfile~HEAD
'
test_expect_success 'rename/directory conflict + content merge conflict' '
git reset --hard &&
git reset --hard &&
git clean -fdqx &&
git checkout left-conflict^0 &&
test_must_fail git merge -s recursive right^0 &&
test 4 -eq $(git ls-files -s | wc -l) &&
test 3 -eq $(git ls-files -u | wc -l) &&
test 1 -eq $(git ls-files -o | wc -l) &&
git cat-file -p left-conflict:newfile >left &&
git cat-file -p base:file >base &&
git cat-file -p right:file >right &&
test_must_fail git merge-file \
-L "HEAD:newfile" \
-L "" \
-L "right^0:file" \
left base right &&
test_cmp left newfile~HEAD &&
test $(git rev-parse :1:newfile) = $(git rev-parse base:file) &&
test $(git rev-parse :2:newfile) = $(git rev-parse left-conflict:newfile) &&
test $(git rev-parse :3:newfile) = $(git rev-parse right:file) &&
test -f newfile/realfile &&
test -f newfile~HEAD
'
test_expect_success 'setup content merge + rename/directory conflict w/ disappearing dir' '
git reset --hard &&
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
mkdir sub &&
printf "1\n2\n3\n4\n5\n6\n" >sub/file &&
git add sub/file &&
test_tick &&
git commit -m base &&
git tag base &&
git checkout -b right &&
echo 7 >>sub/file &&
git add sub/file &&
test_tick &&
git commit -m right &&
git checkout -b left base &&
echo 0 >newfile &&
cat sub/file >>newfile &&
git rm sub/file &&
mv newfile sub &&
git add sub &&
test_tick &&
git commit -m left
'
test_expect_success 'disappearing dir in rename/directory conflict handled' '
git reset --hard &&
git clean -fdqx &&
git checkout left^0 &&
git merge -s recursive right^0 &&
test 1 -eq $(git ls-files -s | wc -l) &&
test 0 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
echo 0 >expect &&
git cat-file -p base:sub/file >>expect &&
echo 7 >>expect &&
test_cmp expect sub &&
test -f sub
'
# 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
# Commit C: rename b->c, modify a
#
# Merging of B & C should NOT be clean. Questions:
# * Both a & b should be removed by the merge; are they?
# * The two c's should contain modifications to a & b; do they?
# * The index should contain two files, both for c; does it?
# * 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' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "1\n2\n3\n4\n5\n" >a &&
printf "5\n4\n3\n2\n1\n" >b &&
git add a b &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a c &&
echo 0 >>b &&
git add b &&
git commit -m B &&
git checkout -b C A &&
git mv b c &&
echo 6 >>a &&
git add a &&
git commit -m C
'
test_expect_success 'handle rename/rename (2to1) conflict correctly' '
git checkout B^0 &&
test_must_fail git merge -s recursive C^0 >out &&
grep "CONFLICT (rename/rename)" out &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 2 -eq $(git ls-files -u | wc -l) &&
test 2 -eq $(git ls-files -u c | wc -l) &&
test 3 -eq $(git ls-files -o | wc -l) &&
test ! -f a &&
test ! -f b &&
test -f c~HEAD &&
test -f c~C^0 &&
test $(git hash-object c~HEAD) = $(git rev-parse C:a) &&
test $(git hash-object c~C^0) = $(git rev-parse B:b)
'
# Testcase setup for simple rename/rename (1to2) conflict:
# Commit A: new file: a
# Commit B: rename a->b
# Commit C: rename a->c
test_expect_success 'setup simple rename/rename (1to2) conflict' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
echo stuff >a &&
git add a &&
test_tick &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a b &&
test_tick &&
git commit -m B &&
git checkout -b C A &&
git mv a c &&
test_tick &&
git commit -m C
'
test_expect_success 'merge has correct working tree contents' '
git checkout C^0 &&
test_must_fail git merge -s recursive B^0 &&
test 3 -eq $(git ls-files -s | wc -l) &&
test 3 -eq $(git ls-files -u | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse :1:a) = $(git rev-parse A:a) &&
test $(git rev-parse :3:b) = $(git rev-parse A:a) &&
test $(git rev-parse :2:c) = $(git rev-parse A:a) &&
test ! -f a &&
test $(git hash-object b) = $(git rev-parse A:a) &&
test $(git hash-object c) = $(git rev-parse A:a)
'
# Testcase setup for rename/rename(1to2)/add-source conflict:
# Commit A: new file: a
# Commit B: rename a->b
# Commit C: rename a->c, add completely different a
#
# Merging of B & C should NOT be clean; there's a rename/rename conflict
test_expect_success 'setup rename/rename(1to2)/add-source conflict' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
git add a &&
git commit -m A &&
git tag A &&
git checkout -b B A &&
git mv a b &&
git commit -m B &&
git checkout -b C A &&
git mv a c &&
echo something completely different >a &&
git add a &&
git commit -m C
'
test_expect_failure 'detect conflict with rename/rename(1to2)/add-source merge' '
git checkout B^0 &&
test_must_fail git merge -s recursive C^0 &&
test 4 -eq $(git ls-files -s | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse 3:a) = $(git rev-parse C:a) &&
test $(git rev-parse 1:a) = $(git rev-parse A:a) &&
test $(git rev-parse 2:b) = $(git rev-parse B:b) &&
test $(git rev-parse 3:c) = $(git rev-parse C:c) &&
test -f a &&
test -f b &&
test -f c
'
test_expect_success 'setup rename/rename(1to2)/add-source resolvable conflict' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
>a &&
git add a &&
test_tick &&
git commit -m base &&
git tag A &&
git checkout -b B A &&
git mv a b &&
test_tick &&
git commit -m one &&
git checkout -b C A &&
git mv a b &&
echo important-info >a &&
git add a &&
test_tick &&
git commit -m two
'
test_expect_failure 'rename/rename/add-source still tracks new a file' '
git checkout C^0 &&
git merge -s recursive B^0 &&
test 2 -eq $(git ls-files -s | wc -l) &&
test 0 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse HEAD:a) = $(git rev-parse C:a) &&
test $(git rev-parse HEAD:b) = $(git rev-parse A:a)
'
test_expect_success 'setup rename/rename(1to2)/add-dest conflict' '
git rm -rf . &&
git clean -fdqx &&
rm -rf .git &&
git init &&
echo stuff >a &&
git add a &&
test_tick &&
git commit -m base &&
git tag A &&
git checkout -b B A &&
git mv a b &&
echo precious-data >c &&
git add c &&
test_tick &&
git commit -m one &&
git checkout -b C A &&
git mv a c &&
echo important-info >b &&
git add b &&
test_tick &&
git commit -m two
'
test_expect_success 'rename/rename/add-dest merge still knows about conflicting file versions' '
git checkout C^0 &&
test_must_fail git merge -s recursive B^0 &&
test 5 -eq $(git ls-files -s | wc -l) &&
test 2 -eq $(git ls-files -u b | wc -l) &&
test 2 -eq $(git ls-files -u c | wc -l) &&
test 4 -eq $(git ls-files -o | wc -l) &&
test $(git rev-parse :1:a) = $(git rev-parse A:a) &&
test $(git rev-parse :2:b) = $(git rev-parse C:b) &&
test $(git rev-parse :3:b) = $(git rev-parse B:b) &&
test $(git rev-parse :2:c) = $(git rev-parse C:c) &&
test $(git rev-parse :3:c) = $(git rev-parse B:c) &&
test $(git hash-object c~HEAD) = $(git rev-parse C:c) &&
test $(git hash-object c~B\^0) = $(git rev-parse B:c) &&
test $(git hash-object b~HEAD) = $(git rev-parse C:b) &&
test $(git hash-object b~B\^0) = $(git rev-parse B:b) &&
test ! -f b &&
test ! -f c
'
test_done