diff --git a/vdirsyncer/tests/storage/test_caldav.py b/vdirsyncer/tests/storage/test_caldav.py
index 1df004c..a72fbca 100644
--- a/vdirsyncer/tests/storage/test_caldav.py
+++ b/vdirsyncer/tests/storage/test_caldav.py
@@ -16,41 +16,50 @@ import shutil
 from vdirsyncer.storage.caldav import CaldavStorage
 from . import StorageTests
 
+from werkzeug.test import Client
+from werkzeug.wrappers import BaseResponse as WerkzeugResponse
+
+
+# All of radicale is already global state, there's nothing we can do
+os.environ['RADICALE_CONFIG'] = ''
+import radicale.config as radicale_config
+radicale_config.set('storage', 'type', 'filesystem')
+radicale_config.set('storage', 'filesystem_folder', None)
+radicale_config.set('rights', 'type', 'None')
+
+from radicale import Application
+import radicale.log
+radicale.log.start()
+
+
+class Response(object):
+    '''Fake API of requests module'''
+    def __init__(self, x):
+        self.x = x
+        self.status_code = x.status_code
+        self.content = x.get_data(as_text=False)
+        self.headers = x.headers
+
+    def raise_for_status(self):
+        '''copied from requests itself'''
+        if 400 <= self.status_code < 600:
+            from requests.exceptions import HTTPError
+            raise HTTPError(str(self.status_code))
+
+
 class CaldavStorageTests(TestCase, StorageTests):
     tmpdir = None
 
     def _get_storage(self, **kwargs):
         self.tmpdir = tempfile.mkdtemp()
-        os.environ['RADICALE_CONFIG'] = ''
-        import radicale.config as radicale_config
-        radicale_config.set('storage', 'type', 'filesystem')
         radicale_config.set('storage', 'filesystem_folder', self.tmpdir)
-        radicale_config.set('rights', 'type', 'None')
-
-        from radicale import Application
         app = Application()
-        import radicale.log
-        radicale.log.start()
-        from werkzeug.test import Client
-        from werkzeug.wrappers import BaseResponse as WerkzeugResponse
-        class Response(object):
-            '''Fake API of requests module'''
-            def __init__(self, x):
-                self.x = x
-                self.status_code = x.status_code
-                self.content = x.get_data(as_text=False)
-                self.headers = x.headers
-
-            def raise_for_status(self):
-                '''copied from requests itself'''
-                if 400 <= self.status_code < 600:
-                    from requests.exceptions import HTTPError
-                    raise HTTPError(str(self.status_code))
 
         c = Client(app, WerkzeugResponse)
         server = 'http://127.0.0.1'
         calendar_path = '/bob/test.ics/'
         full_url = server + calendar_path
+
         def x(method, item, data=None, headers=None):
             assert '/' not in item
             url = calendar_path + item