t7607: add leading-path tests

[git.git] / t / t7607-merge-overwrite.sh

diff --git a/t/t7607-merge-overwrite.sh b/t/t7607-merge-overwrite.sh
index d82349a6a8d6c12c3ca4398a18bd6c1dd42efdc9..f8e8ff0b6fcc078ae5c683d858a82e154f442427 100755 (executable)
--- a/t/t7607-merge-overwrite.sh
+++ b/t/t7607-merge-overwrite.sh
@@ -7,48 +7,52 @@ Do not overwrite changes.'
 . ./test-lib.sh
 
 test_expect_success 'setup' '
-       echo c0 > c0.c &&
-       git add c0.c &&
-       git commit -m c0 &&
-       git tag c0 &&
-       echo c1 > c1.c &&
-       git add c1.c &&
-       git commit -m c1 &&
-       git tag c1 &&
+       test_commit c0 c0.c &&
+       test_commit c1 c1.c &&
+       test_commit c1a c1.c "c1 a" &&
        git reset --hard c0 &&
-       echo c2 > c2.c &&
-       git add c2.c &&
-       git commit -m c2 &&
-       git tag c2 &&
-       git reset --hard c1 &&
-       echo "c1 a" > c1.c &&
-       git add c1.c &&
-       git commit -m "c1 a" &&
-       git tag c1a &&
+       test_commit c2 c2.c &&
+       git reset --hard c0 &&
+       mkdir sub &&
+       echo "sub/f" > sub/f &&
+       git add sub/f &&
+       git commit -m sub &&
+       git tag sub &&
        echo "VERY IMPORTANT CHANGES" > important
 '
 
 test_expect_success 'will not overwrite untracked file' '
        git reset --hard c1 &&
-       cat important > c2.c &&
+       cp important c2.c &&
        test_must_fail git merge c2 &&
+       test_path_is_missing .git/MERGE_HEAD &&
        test_cmp important c2.c
 '
 
+test_expect_success 'will overwrite tracked file' '
+       git reset --hard c1 &&
+       cp important c2.c &&
+       git add c2.c &&
+       git commit -m important &&
+       git checkout c2
+'
+
 test_expect_success 'will not overwrite new file' '
        git reset --hard c1 &&
-       cat important > c2.c &&
+       cp important c2.c &&
        git add c2.c &&
        test_must_fail git merge c2 &&
+       test_path_is_missing .git/MERGE_HEAD &&
        test_cmp important c2.c
 '
 
 test_expect_success 'will not overwrite staged changes' '
        git reset --hard c1 &&
-       cat important > c2.c &&
+       cp important c2.c &&
        git add c2.c &&
        rm c2.c &&
        test_must_fail git merge c2 &&
+       test_path_is_missing .git/MERGE_HEAD &&
        git checkout c2.c &&
        test_cmp important c2.c
 '
@@ -57,7 +61,7 @@ test_expect_success 'will not overwrite removed file' '
        git reset --hard c1 &&
        git rm c1.c &&
        git commit -m "rm c1.c" &&
-       cat important > c1.c &&
+       cp important c1.c &&
        test_must_fail git merge c1a &&
        test_cmp important c1.c
 '
@@ -66,9 +70,10 @@ test_expect_success 'will not overwrite re-added file' '
        git reset --hard c1 &&
        git rm c1.c &&
        git commit -m "rm c1.c" &&
-       cat important > c1.c &&
+       cp important c1.c &&
        git add c1.c &&
        test_must_fail git merge c1a &&
+       test_path_is_missing .git/MERGE_HEAD &&
        test_cmp important c1.c
 '
 
@@ -76,12 +81,66 @@ test_expect_success 'will not overwrite removed file with staged changes' '
        git reset --hard c1 &&
        git rm c1.c &&
        git commit -m "rm c1.c" &&
-       cat important > c1.c &&
+       cp important c1.c &&
        git add c1.c &&
        rm c1.c &&
        test_must_fail git merge c1a &&
+       test_path_is_missing .git/MERGE_HEAD &&
        git checkout c1.c &&
        test_cmp important c1.c
 '
 
+test_expect_success 'will not overwrite untracked subtree' '
+       git reset --hard c0 &&
+       rm -rf sub &&
+       mkdir -p sub/f &&
+       cp important sub/f/important &&
+       test_must_fail git merge sub &&
+       test_path_is_missing .git/MERGE_HEAD &&
+       test_cmp important sub/f/important
+'
+
+test_expect_failure 'will not overwrite untracked file in leading path' '
+       git reset --hard c0 &&
+       rm -rf sub &&
+       cp important sub &&
+       test_must_fail git merge sub &&
+       test_path_is_missing .git/MERGE_HEAD &&
+       test_cmp important sub
+'
+
+test_expect_failure SYMLINKS 'will not overwrite untracked symlink in leading path' '
+       git reset --hard c0 &&
+       rm -rf sub &&
+       mkdir sub2 &&
+       ln -s sub2 sub &&
+       test_must_fail git merge sub &&
+       test_path_is_missing .git/MERGE_HEAD
+'
+
+test_expect_success SYMLINKS 'will not be confused by symlink in leading path' '
+       git reset --hard c0 &&
+       rm -rf sub &&
+       ln -s sub2 sub &&
+       git add sub &&
+       git commit -m ln &&
+       git checkout sub
+'
+
+cat >expect <<\EOF
+error: Untracked working tree file 'c0.c' would be overwritten by merge.
+fatal: read-tree failed
+EOF
+
+test_expect_success 'will not overwrite untracked file on unborn branch' '
+       git reset --hard c0 &&
+       git rm -fr . &&
+       git checkout --orphan new &&
+       cp important c0.c &&
+       test_must_fail git merge c0 2>out &&
+       test_cmp out expect &&
+       test_path_is_missing .git/MERGE_HEAD &&
+       test_cmp important c0.c
+'
+
 test_done