clean cache during data restore (#2563)

and fix failing parser test

superdesk/commands/data_manipulation.py

@@ -34,6 +34,7 @@
 from superdesk.timer import timer
 from superdesk.resource import Resource
 from superdesk.services import BaseService
+from superdesk.cache import cache
 from . import data_updates, flush_elastic_index
 
 
@@ -488,6 +489,7 @@ def run(self, dump_path: Union[Path, str], keep_existing: bool = False, no_flush
             except Exception:
                 logger.exception("😭 Something went wrong")
                 sys.exit(1)
+        cache.clean()
         print("🏁 All done")
 
     def restore_file(self, archive_path: Path):

tests/io/feed_parsers/wordpress_wxr_test.py

@@ -83,9 +83,13 @@ def fake_update_renditions(item, url, _):
 
 
 class WPWXRTestBase(TestCase):
+    filename = None
+
     @mock.patch.object(wordpress_wxr, "update_renditions", fake_update_renditions)
     def __init__(self, methodname):
         super().__init__(methodname)
+        if self.filename is None:
+            return
         dirname = os.path.dirname(os.path.realpath(__file__))
         fixture = os.path.normpath(os.path.join(dirname, "../fixtures", self.filename))
         provider = {"name": "Test"}