Updated to reflect Barry's refactoring of the test base classes.

We now pass the tests we test. We still have to add the version tests,
which we were failing before.

src/ZODB/tests/testFileStorage.py

-import sys, os
-
+import sys
 sys.path.insert(0, '.')
 
 import ZODB.FileStorage
-import unittest, UndoVersionStorage
+import os, unittest
+import StorageTestBase, BasicStorage, TransactionalUndoStorage
 
-class FileStorageTests(UndoVersionStorage.UndoVersionStorage,
-                       unittest.TestCase):
+class FileStorageTests(
+    StorageTestBase.StorageTestBase,
+    BasicStorage.BasicStorage,
+    TransactionalUndoStorage.TransactionalUndoStorage,
+    ):
 
     def setUp(self):
         self._storage = ZODB.FileStorage.FileStorage(
             'FileStorageTests.fs', create=1)
-        UndoVersionStorage.UndoVersionStorage.setUp(self)
+        StorageTestBase.StorageTestBase.setUp(self)
 
     def tearDown(self):
-        UndoVersionStorage.UndoVersionStorage.tearDown(self)
+        StorageTestBase.StorageTestBase.tearDown(self)
         os.remove('FileStorageTests.fs')
 
 def test_suite():