PYTHON-4690 Add test

Author: ShaneHarvey

bson/tz_util.py

@@ -39,7 +39,7 @@ def __init__(self, offset: Union[float, timedelta], name: str) -> None:
     def __getinitargs__(self) -> Tuple[timedelta, str]:
         return self.__offset, self.__name
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return f"{self.__class__.__name__}({self.__offset!r}, {self.__name!r})"
 
     def utcoffset(self, dt: Optional[datetime]) -> timedelta:

test/test_bson.py

@@ -1019,6 +1019,10 @@ def test_tzinfo(self):
         tz = FixedOffset(42, "forty-two")
         self.assertRaises(ValueError, CodecOptions, tzinfo=tz)
         self.assertEqual(tz, CodecOptions(tz_aware=True, tzinfo=tz).tzinfo)
+        self.assertEqual(repr(tz), "FixedOffset(datetime.timedelta(seconds=2520), 'forty-two')")
+        self.assertEqual(
+            repr(eval(repr(tz))), "FixedOffset(datetime.timedelta(seconds=2520), 'forty-two')"
+        )
 
     def test_codec_options_repr(self):
         r = (