diff --git a/tests/test_stream.py b/tests/test_stream.py
index 0ec0f7b..c051a4b 100644
--- a/tests/test_stream.py
+++ b/tests/test_stream.py
@@ -1044,9 +1044,18 @@ def test_throttle(self) -> None:
             msg="`throttle` should raise error when called with `per_second` < 1.",
         ):
             list(Stream([1]).throttle(per_second=0))
+        with self.assertRaises(
+            ValueError,
+            msg="`throttle` should raise error when called with `per_minute` < 1.",
+        ):
+            list(Stream([1]).throttle(per_minute=0))
+        with self.assertRaises(
+            ValueError,
+            msg="`throttle` should raise error when called with `per_hour` < 1.",
+        ):
+            list(Stream([1]).throttle(per_hour=0))
 
         # test interval
-
         interval_seconds = 0.3
         super_slow_elem_pull_seconds = 1
         N = 10