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24dbdab50d
Instead of immediately printing ll-merge warnings to stderr, we save
them in our output strbuf. Besides allowing us to move these warnings
to a special file for --remerge-diff, this has two other benefits for
regular merges done by merge-ort:
* The deferral of messages ensures we can print all messages about
any given path together (merge-recursive was known to sometimes
intersperse messages about other paths, particularly when renames
were involved).
* The deferral of messages means we can avoid printing spurious
conflict messages when we just end up aborting due to local user
modifications in the way. (In contrast to merge-recursive.c which
prematurely checks for local modifications in the way via
unpack_trees() and gets the check wrong both in terms of false
positives and false negatives relative to renames, merge-ort does
not perform the local modifications in the way check until the
checkout() step after the full merge has been computed.)
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
152 lines
3.6 KiB
Bash
Executable file
152 lines
3.6 KiB
Bash
Executable file
#!/bin/sh
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test_description='Test merge without common ancestors'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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. ./test-lib.sh
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# This scenario is based on a real-world repository of Shawn Pearce.
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# 1 - A - D - F
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# \ X /
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# B X
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# X \
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# 2 - C - E - G
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GIT_COMMITTER_DATE="2006-12-12 23:28:00 +0100"
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export GIT_COMMITTER_DATE
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test_expect_success 'setup tests' '
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GIT_TEST_COMMIT_GRAPH=0 &&
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export GIT_TEST_COMMIT_GRAPH &&
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echo 1 >a1 &&
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git add a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:00" git commit -m 1 a1 &&
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git checkout -b A main &&
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echo A >a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:01" git commit -m A a1 &&
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git checkout -b B main &&
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echo B >a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:02" git commit -m B a1 &&
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git checkout -b D A &&
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git rev-parse B >.git/MERGE_HEAD &&
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echo D >a1 &&
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git update-index a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:03" git commit -m D &&
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git symbolic-ref HEAD refs/heads/other &&
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echo 2 >a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:04" git commit -m 2 a1 &&
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git checkout -b C &&
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echo C >a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:05" git commit -m C a1 &&
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git checkout -b E C &&
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git rev-parse B >.git/MERGE_HEAD &&
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echo E >a1 &&
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git update-index a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:06" git commit -m E &&
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git checkout -b G E &&
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git rev-parse A >.git/MERGE_HEAD &&
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echo G >a1 &&
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git update-index a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:07" git commit -m G &&
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git checkout -b F D &&
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git rev-parse C >.git/MERGE_HEAD &&
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echo F >a1 &&
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git update-index a1 &&
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GIT_AUTHOR_DATE="2006-12-12 23:00:08" git commit -m F &&
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test_oid_cache <<-EOF
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idxstage1 sha1:ec3fe2a791706733f2d8fa7ad45d9a9672031f5e
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idxstage1 sha256:b3c8488929903aaebdeb22270cb6d36e5b8724b01ae0d4da24632f158c99676f
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EOF
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'
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test_expect_success 'combined merge conflicts' '
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test_must_fail git merge -m final G
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'
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test_expect_success 'result contains a conflict' '
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cat >expect <<-\EOF &&
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<<<<<<< HEAD
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F
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=======
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G
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>>>>>>> G
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EOF
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test_cmp expect a1
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'
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test_expect_success 'virtual trees were processed' '
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# TODO: fragile test, relies on ambigious merge-base resolution
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git ls-files --stage >out &&
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cat >expect <<-EOF &&
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100644 $(test_oid idxstage1) 1 a1
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100644 $(git rev-parse F:a1) 2 a1
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100644 $(git rev-parse G:a1) 3 a1
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EOF
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test_cmp expect out
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'
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test_expect_success 'refuse to merge binary files' '
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git reset --hard &&
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printf "\0" >binary-file &&
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git add binary-file &&
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git commit -m binary &&
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git checkout G &&
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printf "\0\0" >binary-file &&
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git add binary-file &&
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git commit -m binary2 &&
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if test "$GIT_TEST_MERGE_ALGORITHM" = ort
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then
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test_must_fail git merge F >merge_output
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else
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test_must_fail git merge F 2>merge_output
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fi &&
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grep "Cannot merge binary files: binary-file (HEAD vs. F)" merge_output
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'
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test_expect_success 'mark rename/delete as unmerged' '
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git reset --hard &&
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git checkout -b delete &&
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git rm a1 &&
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test_tick &&
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git commit -m delete &&
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git checkout -b rename HEAD^ &&
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git mv a1 a2 &&
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test_tick &&
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git commit -m rename &&
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test_must_fail git merge delete &&
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if test "$GIT_TEST_MERGE_ALGORITHM" = ort
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then
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test 2 = $(git ls-files --unmerged | wc -l)
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else
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test 1 = $(git ls-files --unmerged | wc -l)
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fi &&
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git rev-parse --verify :2:a2 &&
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test_must_fail git rev-parse --verify :3:a2 &&
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git checkout -f delete &&
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test_must_fail git merge rename &&
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if test "$GIT_TEST_MERGE_ALGORITHM" = ort
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then
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test 2 = $(git ls-files --unmerged | wc -l)
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else
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test 1 = $(git ls-files --unmerged | wc -l)
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fi &&
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test_must_fail git rev-parse --verify :2:a2 &&
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git rev-parse --verify :3:a2
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'
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test_done
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