Created two tests that verify ZODB import and export.

src/ZODB/tests/testZODB.py

+import sys, os
+
+sys.path[0:0] = [os.curdir, os.path.join(os.pardir, os.pardir)]
+
+import ZODB
+import ZODB.FileStorage
+from ZODB.PersistentMapping import PersistentMapping
+import unittest
+
+class ExportImportTests:
+    def checkDuplicate(self, abort_it=0, dup_name='test_duplicate'):
+        get_transaction().begin()
+        get_transaction().note('duplication')
+        # Duplicate the 'test' object.
+        conn = self._db.open()
+        try:
+            root = conn.root()
+            ob = root['test']
+            assert len(ob) > 10, 'Insufficient test data'
+            try:
+                import tempfile
+                f = tempfile.TemporaryFile()
+                ob._p_jar.exportFile(ob._p_oid, f)
+                assert f.tell() > 0, 'Did not export correctly'
+                f.seek(0)
+                new_ob = ob._p_jar.importFile(f)
+                root[dup_name] = new_ob
+                f.close()
+                if abort_it:
+                    get_transaction().abort()
+                else:
+                    get_transaction().commit()
+            except:
+                get_transaction().abort()
+                raise
+        finally:
+            conn.close()
+        get_transaction().begin()
+        # Verify the duplicate.
+        conn = self._db.open()
+        try:
+            root = conn.root()
+            ob = root['test']
+            try:
+                ob2 = root[dup_name]
+            except KeyError:
+                if abort_it:
+                    # Passed the test.
+                    return
+                else:
+                    raise
+            else:
+                if abort_it:
+                    assert 0, 'Did not abort duplication'
+            l1 = list(ob.items())
+            l1.sort()
+            l2 = list(ob2.items())
+            l2.sort()
+            l1 = map(lambda (k, v): (k, v[0]), l1)
+            l2 = map(lambda (k, v): (k, v[0]), l2)
+            assert l1 == l2, 'Duplicate did not match'
+            assert ob._p_oid != ob2._p_oid, 'Did not duplicate'
+            assert ob._p_jar == ob2._p_jar, 'Not same connection'
+            oids = {}
+            for v in ob.values():
+                oids[v._p_oid] = 1
+            for v in ob2.values():
+                assert not oids.has_key(v._p_oid), (
+                    'Did not fully separate duplicate from original')
+            get_transaction().commit()
+        finally:
+            conn.close()
+
+    def checkDuplicateAborted(self):
+        self.checkDuplicate(abort_it=1, dup_name='test_duplicate_aborted')
+    
+
+class ZODBTests(unittest.TestCase, ExportImportTests):
+
+    def setUp(self):
+        try: os.remove('ZODBTests.fs')
+        except: pass
+        self._storage = ZODB.FileStorage.FileStorage(
+            'ZODBTests.fs', create=1)
+        self._db = ZODB.DB(self._storage)
+        get_transaction().begin()
+        conn = self._db.open()
+        root = conn.root()
+        root['test'] = pm = PersistentMapping()
+        for n in range(100):
+            pm[n] = PersistentMapping({0: 100 - n})
+        get_transaction().note('created test data')
+        get_transaction().commit()
+        conn.close()
+
+    def tearDown(self):
+        self._storage.close()
+        os.remove('ZODBTests.fs')
+
+def test_suite():
+    return unittest.makeSuite(ZODBTests, 'check')
+
+def main():
+    alltests=test_suite()
+    runner = unittest.TextTestRunner()
+    runner.run(alltests)
+
+def debug():
+   test_suite().debug()
+
+def pdebug():
+    import pdb
+    pdb.run('debug()')
+
+if __name__=='__main__':
+   if len(sys.argv) > 1:
+      globals()[sys.argv[1]]()
+   else:
+      main()