Avoid raising exception on format_duration(None)

Fixes #25
2023-01-09 16:14:01 +01:00
parent 751182df52
commit 24f4459318
3 changed files with 12 additions and 3 deletions
--- a/tests/test_time.py
+++ b/tests/test_time.py
@ -56,3 +56,9 @@ class FormatDurationTest(unittest.TestCase):
        delta = timedelta(hours=-2)
        result = format_duration(delta, "%H hours")
        self.assertEqual(result, "0 hours")
+
+    def test_none(self):
+        try:
+            format_duration(None)
+        except TypeError as exc:
+            assert False, f"format_duration(None) raised an exception {exc}"