Fixed style, added tests and changelog entry

CHANGELOG.md

@@ -39,6 +39,7 @@ This project should more or less adhere to [Semantic Versioning](https://semver.
 * Use setuptools-scm / pyproject.toml (modern packaging). Details in https://github.com/python-caldav/caldav/pull/364 and https://github.com/python-caldav/caldav/pull/367
 * Debugging tool - an environment variable can be set, causing the library to spew out server communications into files under /tmp.  Details in https://github.com/python-caldav/caldav/pull/249 and https://github.com/python-caldav/caldav/issues/248
 * Comaptibility matrix for posteo.de servers in `tests/compatibility_issues.py`
+* Added sort_reverse option to the search function to reverse the sorting order of the found objects.
 
 ### Security
 

caldav/objects.py

@@ -11,9 +11,22 @@ class hierarchy into a separate file)
 import sys
 import uuid
 from collections import defaultdict
-from datetime import date, datetime, timedelta, timezone
-from typing import TYPE_CHECKING, Any, List, Optional, Set, Tuple, TypeVar, Union
-from urllib.parse import ParseResult, SplitResult, quote, unquote
+from datetime import date
+from datetime import datetime
+from datetime import timedelta
+from datetime import timezone
+from typing import Any
+from typing import List
+from typing import Optional
+from typing import Set
+from typing import Tuple
+from typing import TYPE_CHECKING
+from typing import TypeVar
+from typing import Union
+from urllib.parse import ParseResult
+from urllib.parse import quote
+from urllib.parse import SplitResult
+from urllib.parse import unquote
 
 import icalendar
 import vobject
@@ -22,10 +35,12 @@ class hierarchy into a separate file)
 from lxml.etree import _Element
 from vobject.base import VBase
 
-from caldav.lib.python_utilities import to_normal_str, to_unicode, to_wire
-
 from .elements.base import BaseElement
-from .elements.cdav import CalendarData, CompFilter
+from .elements.cdav import CalendarData
+from .elements.cdav import CompFilter
+from caldav.lib.python_utilities import to_normal_str
+from caldav.lib.python_utilities import to_unicode
+from caldav.lib.python_utilities import to_wire
 
 try:
     from typing import ClassVar, Optional, Union

tests/test_caldav.py

@@ -59,10 +59,11 @@
 from caldav.objects import Todo
 
 if test_xandikos:
-    from xandikos.web import XandikosBackend, XandikosApp
+    import asyncio
+
     import aiohttp
     import aiohttp.web
-    import asyncio
+    from xandikos.web import XandikosApp, XandikosBackend
 
 if test_radicale:
     import radicale.config
@@ -1332,6 +1333,11 @@ def testSearchEvent(self):
         assert len(all_events) == 3
         assert all_events[0].instance.vevent.summary.value == "Bastille Day Jitsi Party"
 
+        ## Sorting in reverse order should work also
+        all_events = c.search(sort_keys=("SUMMARY", "DTSTAMP"), sort_reverse=True)
+        assert len(all_events) == 3
+        assert all_events[0].instance.vevent.summary.value == "Our Blissful Anniversary"
+
     def testSearchSortTodo(self):
         self.skip_on_compatibility_flag("read_only")
         self.skip_on_compatibility_flag("no_todo")