diff --git a/tests/unit/utils/test_fs.py b/tests/unit/utils/test_fs.py
index 97c1ad29b..5c8849903 100644
--- a/tests/unit/utils/test_fs.py
+++ b/tests/unit/utils/test_fs.py
@@ -39,6 +39,15 @@ class TestMtimeAndSize(TestDir):
         self.assertIs(type(dir_size), str)
         self.assertEqual(dir_size, str(actual_dir_size))
 
+    def test_path_object_and_str_are_valid_types(self):
+        dvcignore = DvcIgnoreFilter(self.root_dir)
+        file_time, file_size = get_mtime_and_size(self.DATA, dvcignore)
+        file_object_time, file_object_size = get_mtime_and_size(
+            PathInfo(self.DATA), dvcignore
+        )
+        self.assertEqual(file_time, file_object_time)
+        self.assertEqual(file_size, file_object_size)
+
 
 class TestContainsLink(TestCase):
     def test_should_raise_exception_on_base_path_not_in_path(self):