diff options
author | Elijah Newren <newren@gmail.com> | 2020-10-26 20:01:37 +0300 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2020-10-26 22:31:23 +0300 |
commit | ef527787089ce9a5c137ffde24701dfb7fda841c (patch) | |
tree | a7143b02aaacb77fc45faeec62246132ffaf86c2 /t/t6402-merge-rename.sh | |
parent | f06481f12732e846c0572a0109e2c5b5684f508a (diff) |
merge tests: expect improved directory/file conflict handling in ort
merge-recursive.c is built on the idea of running unpack_trees() and
then "doing minor touch-ups" to get the result. Unfortunately,
unpack_trees() was run in an update-as-it-goes mode, leading
merge-recursive.c to follow suit and end up with an immediate evaluation
and fix-it-up-as-you-go design. Some things like directory/file
conflicts are not well representable in the index data structure, and
required special extra code to handle. But then when it was discovered
that rename/delete conflicts could also be involved in directory/file
conflicts, the special directory/file conflict handling code had to be
copied to the rename/delete codepath. ...and then it had to be copied
for modify/delete, and for rename/rename(1to2) conflicts, ...and yet it
still missed some. Further, when it was discovered that there were also
file/submodule conflicts and submodule/directory conflicts, we needed to
copy the special submodule handling code to all the special cases
throughout the codebase.
And then it was discovered that our handling of directory/file conflicts
was suboptimal because it would create untracked files to store the
contents of the conflicting file, which would not be cleaned up if
someone were to run a 'git merge --abort' or 'git rebase --abort'. It
was also difficult or scary to try to add or remove the index entries
corresponding to these files given the directory/file conflict in the
index. But changing merge-recursive.c to handle these correctly was a
royal pain because there were so many sites in the code with similar but
not identical code for handling directory/file/submodule conflicts that
would all need to be updated.
I have worked hard to push all directory/file/submodule conflict
handling in merge-ort through a single codepath, and avoid creating
untracked files for storing tracked content (it does record things at
alternate paths, but makes sure they have higher-order stages in the
index).
Since updating merge-recursive is too much work and we don't want to
destabilize it, instead update the testsuite to have different
expectations for relevant directory/file/submodule conflict tests.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t6402-merge-rename.sh')
-rwxr-xr-x | t/t6402-merge-rename.sh | 108 |
1 files changed, 81 insertions, 27 deletions
diff --git a/t/t6402-merge-rename.sh b/t/t6402-merge-rename.sh index bbbba3dcbf..47d4434d64 100755 --- a/t/t6402-merge-rename.sh +++ b/t/t6402-merge-rename.sh @@ -397,7 +397,12 @@ test_expect_success 'Rename+D/F conflict; renamed file cannot merge and dir in t 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)" && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test 3 -eq "$(git ls-files -u dir~HEAD | wc -l)" + else + test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" + fi && test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" && test_must_fail git diff --quiet && @@ -415,7 +420,12 @@ test_expect_success 'Same as previous, but merged other way' ' 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)" && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test 3 -eq "$(git ls-files -u dir~renamed-file-has-conflicts | wc -l)" + else + test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" + fi && test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" && test_must_fail git diff --quiet && @@ -471,7 +481,12 @@ test_expect_success 'both rename source and destination involved in D/F conflict git checkout -q rename-dest^0 && test_must_fail git merge --strategy=recursive source-conflict && - test 1 -eq "$(git ls-files -u | wc -l)" && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test 2 -eq "$(git ls-files -u | wc -l)" + else + test 1 -eq "$(git ls-files -u | wc -l)" + fi && test_must_fail git diff --quiet && @@ -505,34 +520,63 @@ test_expect_success 'setup pair rename to parent of other (D/F conflicts)' ' 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 && +if test "$GIT_TEST_MERGE_ALGORITHM" = ort +then + test_expect_success 'pair rename to parent of other (D/F conflicts) w/ untracked dir' ' + git checkout -q rename-one^0 && + mkdir one && + test_must_fail git merge --strategy=recursive rename-two && - test 2 -eq "$(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 4 -eq "$(git ls-files -u | wc -l)" && + test 2 -eq "$(git ls-files -u one | wc -l)" && + test 2 -eq "$(git ls-files -u two | wc -l)" && - test_must_fail git diff --quiet && + test_must_fail git diff --quiet && - test 4 -eq $(find . | grep -v .git | wc -l) && + test 3 -eq $(find . | grep -v .git | wc -l) && - test_path_is_dir one && - test_path_is_file one~rename-two && - test_path_is_file two && - test "other" = $(cat one~rename-two) && - test "stuff" = $(cat two) -' + test_path_is_file one && + test_path_is_file two && + test "other" = $(cat one) && + test "stuff" = $(cat two) + ' +else + test_expect_success 'pair rename to parent of other (D/F conflicts) w/ untracked dir' ' + git checkout -q rename-one^0 && + mkdir one && + test_must_fail git merge --strategy=recursive rename-two && + + test 2 -eq "$(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_path_is_dir one && + test_path_is_file one~rename-two && + test_path_is_file two && + test "other" = $(cat one~rename-two) && + test "stuff" = $(cat two) + ' +fi test_expect_success 'pair rename to parent of other (D/F conflicts) w/ clean start' ' git reset --hard && git clean -fdqx && test_must_fail git merge --strategy=recursive rename-two && - test 2 -eq "$(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)" && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test 4 -eq "$(git ls-files -u | wc -l)" && + test 2 -eq "$(git ls-files -u one | wc -l)" && + test 2 -eq "$(git ls-files -u two | wc -l)" + else + test 2 -eq "$(git ls-files -u | wc -l)" && + test 1 -eq "$(git ls-files -u one | wc -l)" && + test 1 -eq "$(git ls-files -u two | wc -l)" + fi && test_must_fail git diff --quiet && @@ -572,12 +616,22 @@ test_expect_success 'check handling of differently renamed file with D/F conflic git checkout -q first-rename^0 && test_must_fail git merge --strategy=recursive second-rename && - test 5 -eq "$(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 "$(git ls-files -o | wc -l)" && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test 5 -eq "$(git ls-files -s | wc -l)" && + test 3 -eq "$(git ls-files -u | wc -l)" && + test 1 -eq "$(git ls-files -u one~HEAD | wc -l)" && + test 1 -eq "$(git ls-files -u two~second-rename | wc -l)" && + test 1 -eq "$(git ls-files -u original | wc -l)" && + test 0 -eq "$(git ls-files -o | wc -l)" + else + 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)" + fi && test_path_is_file one/file && test_path_is_file two/file && |