merge: deprecate 'git merge <message> HEAD <commit>' syntax

diff --git a/t/t2022-checkout-paths.sh b/t/t2022-checkout-paths.sh
index 56090d2ebadcdfb127b9db005ae8d092b0255a75..f46d0499bc6ea95236f7ca05060b8f8fbbdbbc50 100755 (executable)
--- a/t/t2022-checkout-paths.sh
+++ b/t/t2022-checkout-paths.sh
@@ -39,4 +39,43 @@ test_expect_success 'checking out paths out of a tree does not clobber unrelated
        test_cmp expect.next2 dir/next2
 '
 
+test_expect_success 'do not touch unmerged entries matching $path but not in $tree' '
+       git checkout next &&
+       git reset --hard &&
+
+       cat dir/common >expect.common &&
+       EMPTY_SHA1=$(git hash-object -w --stdin </dev/null) &&
+       git rm dir/next0 &&
+       cat >expect.next0 <<-EOF &&
+       100644 $EMPTY_SHA1 1    dir/next0
+       100644 $EMPTY_SHA1 2    dir/next0
+       EOF
+       git update-index --index-info <expect.next0 &&
+
+       git checkout master dir &&
+
+       test_cmp expect.common dir/common &&
+       test_path_is_file dir/master &&
+       git diff --exit-code master dir/master &&
+       git ls-files -s dir/next0 >actual.next0 &&
+       test_cmp expect.next0 actual.next0
+'
+
+test_expect_success 'do not touch files that are already up-to-date' '
+       git reset --hard &&
+       echo one >file1 &&
+       echo two >file2 &&
+       git add file1 file2 &&
+       git commit -m base &&
+       echo modified >file1 &&
+       test-chmtime =1000000000 file2 &&
+       git update-index -q --refresh &&
+       git checkout HEAD -- file1 file2 &&
+       echo one >expect &&
+       test_cmp expect file1 &&
+       echo "1000000000        file2" >expect &&
+       test-chmtime -v +0 file2 >actual &&
+       test_cmp expect actual
+'
+
 test_done