--- a/tests/test-revert.out
+++ b/tests/test-revert.out
@@ -54,4 +54,7 @@ executable
 %% issue 241
 adding a
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+% should fail - no arguments
+abort: no files or directories specified
+% should succeed
 reverting a