No more slicing fqdn to get parts

Author: aclark4life

pymongo/asynchronous/srv_resolver.py

@@ -92,7 +92,7 @@ def __init__(
             pass
 
         try:
-            self.__plist = self.__fqdn.split(".")[1:]
+            self.__plist = self.__fqdn.split(".")
         except Exception:
             raise ConfigurationError(_INVALID_HOST_MSG % (fqdn,)) from None
         self.__slen = len(self.__plist)

pymongo/synchronous/srv_resolver.py

@@ -92,7 +92,7 @@ def __init__(
             pass
 
         try:
-            self.__plist = self.__fqdn.split(".")[1:]
+            self.__plist = self.__fqdn.split(".")
         except Exception:
             raise ConfigurationError(_INVALID_HOST_MSG % (fqdn,)) from None
         self.__slen = len(self.__plist)

test/test_uri_parser.py

@@ -629,9 +629,10 @@ def mock_resolve(query, record_type, *args, **kwargs):
                 else:
                     self.fail(f"ConfigurationError was not raised for query: {case['query']}")
 
-    def test_4_throw_when_return_address_does_not_contain_dot_separating_shared_part_of_domain(self):
+    def test_4_throw_when_return_address_does_not_contain_dot_separating_shared_part_of_domain(
+        self
+    ):
         test_cases = [
-
             {
                 "query": "_mongodb._tcp.localhost",
                 "mock_target": "test_1.cluster_1localhost",