172b6428d0
In case HEAD does not point to a valid commit yet, merge is implemented as a hard reset. This will cause untracked files to be overwritten. Instead, assume the empty tree for HEAD and do a regular merge. An untracked file will cause the merge to abort and do nothing. If no conflicting files are present, the merge will have the same effect as a hard reset. Signed-off-by: Clemens Buchacher <drizzd@aon.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
104 lines
2.1 KiB
Bash
Executable File
104 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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test_description='git-merge
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Do not overwrite changes.'
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. ./test-lib.sh
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test_expect_success 'setup' '
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echo c0 > c0.c &&
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git add c0.c &&
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git commit -m c0 &&
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git tag c0 &&
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echo c1 > c1.c &&
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git add c1.c &&
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git commit -m c1 &&
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git tag c1 &&
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git reset --hard c0 &&
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echo c2 > c2.c &&
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git add c2.c &&
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git commit -m c2 &&
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git tag c2 &&
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git reset --hard c1 &&
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echo "c1 a" > c1.c &&
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git add c1.c &&
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git commit -m "c1 a" &&
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git tag c1a &&
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echo "VERY IMPORTANT CHANGES" > important
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'
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test_expect_success 'will not overwrite untracked file' '
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git reset --hard c1 &&
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cat important > c2.c &&
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! git merge c2 &&
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test_cmp important c2.c
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'
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test_expect_success 'will not overwrite new file' '
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git reset --hard c1 &&
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cat important > c2.c &&
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git add c2.c &&
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! git merge c2 &&
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test_cmp important c2.c
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'
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test_expect_success 'will not overwrite staged changes' '
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git reset --hard c1 &&
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cat important > c2.c &&
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git add c2.c &&
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rm c2.c &&
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! git merge c2 &&
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git checkout c2.c &&
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test_cmp important c2.c
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'
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test_expect_success 'will not overwrite removed file' '
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git reset --hard c1 &&
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git rm c1.c &&
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git commit -m "rm c1.c" &&
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cat important > c1.c &&
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! git merge c1a &&
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test_cmp important c1.c
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'
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test_expect_success 'will not overwrite re-added file' '
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git reset --hard c1 &&
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git rm c1.c &&
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git commit -m "rm c1.c" &&
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cat important > c1.c &&
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git add c1.c &&
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! git merge c1a &&
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test_cmp important c1.c
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'
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test_expect_success 'will not overwrite removed file with staged changes' '
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git reset --hard c1 &&
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git rm c1.c &&
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git commit -m "rm c1.c" &&
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cat important > c1.c &&
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git add c1.c &&
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rm c1.c &&
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! git merge c1a &&
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git checkout c1.c &&
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test_cmp important c1.c
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'
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cat >expect <<\EOF
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error: Untracked working tree file 'c0.c' would be overwritten by merge.
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fatal: read-tree failed
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EOF
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test_expect_success 'will not overwrite untracked file on unborn branch' '
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git reset --hard c0 &&
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git rm -fr . &&
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git checkout --orphan new &&
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cp important c0.c &&
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test_must_fail git merge c0 2>out &&
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test_cmp out expect &&
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test_path_is_missing .git/MERGE_HEAD &&
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test_cmp important c0.c
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'
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test_done
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