New test

src/ZODB/tests/testMappingStorage.py

+import ZODB.MappingStorage
+import os, unittest
+
+from ZODB.tests import StorageTestBase, BasicStorage, Synchronization
+
+class MappingStorageTests(StorageTestBase.StorageTestBase,
+                       BasicStorage.BasicStorage,
+                       Synchronization.SynchronizedStorage,
+                       ):
+
+    def setUp(self):
+        self._storage = ZODB.MappingStorage.MappingStorage()
+        StorageTestBase.StorageTestBase.setUp(self)
+
+def test_suite():
+    suite = unittest.makeSuite(MappingStorageTests, 'check')
+    return suite
+
+if __name__ == "__main__":
+    loader = unittest.TestLoader()
+    loader.testMethodPrefix = "check"
+    unittest.main(testLoader=loader)
+