t/{t5541,lib-httpd}: replace problematic '!()' notation with test_must_fail

diff --git a/t/t7405-submodule-merge.sh b/t/t7405-submodule-merge.sh
index aa6c44ce4f5855bd4f18f737c7b1239407549eab..4a7b8933f4bf1036ba1e044d6e2dc54d72084039 100755 (executable)
--- a/t/t7405-submodule-merge.sh
+++ b/t/t7405-submodule-merge.sh
@@ -45,7 +45,7 @@ test_expect_success setup '
         git commit -m sub-b) &&
        git add sub &&
        test_tick &&
-       git commit -m b
+       git commit -m b &&
 
        git checkout -b c a &&
        git merge -s ours b &&
@@ -54,13 +54,13 @@ test_expect_success setup '
        git merge -s ours a
 '
 
-test_expect_failure 'merging with modify/modify conflict' '
+test_expect_success 'merging with modify/modify conflict' '
 
        git checkout -b test1 a &&
        test_must_fail git merge b &&
        test -f .git/MERGE_MSG &&
-       git diff
-
+       git diff &&
+       test -n "$(git ls-files -u)"
 '
 
 test_expect_success 'merging with a modify/modify conflict between merge bases' '