test: undefined for fs.stat options

Author: UziTech

test/parallel/test-fs-stat.js

@@ -154,3 +154,14 @@ fs.stat(__filename, common.mustCall(function(err, s) {
     }
   );
 });
+
+// Should not throw an error
+fs.stat(__filename, undefined, common.mustCall(() => {}));
+
+fs.open(__filename, 'r', undefined, common.mustCall((err, fd) => {
+  // Should not throw an error
+  fs.fstat(fd, undefined, common.mustCall(() => {}));
+}));
+
+// Should not throw an error
+fs.lstat(__filename, undefined, common.mustCall(() => {}));