Fixed: changes in 2.2 broke the zconfig resolver.

CHANGES.txt

@@ -4,7 +4,7 @@
 2.2.1 (unreleased)
 ------------------
 
-- Nothing changed yet.
+- Fixed: changes in 2.2 broke the zconfig resolver.
 
 
 2.2 (2017-04-17)

zodburi/__init__.py

@@ -50,10 +50,11 @@ def _get_dbkw(kw):
         if parameter in kw:
             v = kw.pop(parameter)
             if parameter.startswith('connection_'):
-                if parameters[parameter] in bytes_parameters:
-                    v = _parse_bytes(v)
-                else:
-                    v = int(v)
+                if not isinstance(v, int):
+                    if parameters[parameter] in bytes_parameters:
+                        v = _parse_bytes(v)
+                    else:
+                        v = int(v)
             dbkw[parameters[parameter]] = v
 
     if kw:

zodburi/tests/test_resolvers.py

@@ -490,6 +490,31 @@ class TestZConfigURIResolver(unittest.TestCase):
                 expect[cparameter] *= 1<<20
         self.assertEqual(dbkw, expect)
 
+    def test_database_integration_because_ints(self):
+        from zodburi import resolve_uri
+        self.tmp.write(b"""
+        <zodb>
+          <mappingstorage>
+          </mappingstorage>
+        </zodb>
+        """)
+        self.tmp.flush()
+        from zodburi import resolve_uri
+        factory, dbkw = resolve_uri('zconfig://%s' % self.tmp.name)
+        storage = factory()
+        from ZODB.MappingStorage import MappingStorage
+        self.assertTrue(isinstance(storage, MappingStorage))
+        self.assertEqual(dbkw,
+                         {'cache_size': 5000,
+                          'cache_size_bytes': 0,
+                          'historical_cache_size': 1000,
+                          'historical_cache_size_bytes': 0,
+                          'historical_pool_size': 3,
+                          'historical_timeout': 300,
+                          'large_record_size': 16777216,
+                          'pool_size': 7,
+                          'database_name': 'unnamed'})
+
 class TestMappingStorageURIResolver(Base, unittest.TestCase):
 
     def _getTargetClass(self):