diff --git a/discord/utils.py b/discord/utils.py
index 99c7cfc94233..3f8f2a28f506 100644
--- a/discord/utils.py
+++ b/discord/utils.py
@@ -71,6 +71,7 @@
 import typing
 import warnings
 import logging
+from cov import test, mark
 
 import yarl
 
@@ -1394,15 +1395,20 @@ def _to_kebab_case(text: str) -> str:
     return CAMEL_CASE_REGEX.sub('-', text).lower()
 
 
+@test(4)
 def _human_join(seq: Sequence[str], /, *, delimiter: str = ', ', final: str = 'or') -> str:
     size = len(seq)
     if size == 0:
+        mark(0)
         return ''
 
     if size == 1:
+        mark(1)
         return seq[0]
 
     if size == 2:
+        mark(2)
         return f'{seq[0]} {final} {seq[1]}'
 
+    mark(3)
     return delimiter.join(seq[:-1]) + f' {final} {seq[-1]}'