Updated to pysqlite 2.4.1. Documentation additions will come later.
diff --git a/Lib/sqlite3/test/py25tests.py b/Lib/sqlite3/test/py25tests.py
new file mode 100644
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+++ b/Lib/sqlite3/test/py25tests.py
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+#-*- coding: ISO-8859-1 -*-
+# pysqlite2/test/regression.py: pysqlite regression tests
+#
+# Copyright (C) 2007 Gerhard Häring <gh@ghaering.de>
+#
+# This file is part of pysqlite.
+#
+# This software is provided 'as-is', without any express or implied
+# warranty.  In no event will the authors be held liable for any damages
+# arising from the use of this software.
+#
+# Permission is granted to anyone to use this software for any purpose,
+# including commercial applications, and to alter it and redistribute it
+# freely, subject to the following restrictions:
+#
+# 1. The origin of this software must not be misrepresented; you must not
+#    claim that you wrote the original software. If you use this software
+#    in a product, an acknowledgment in the product documentation would be
+#    appreciated but is not required.
+# 2. Altered source versions must be plainly marked as such, and must not be
+#    misrepresented as being the original software.
+# 3. This notice may not be removed or altered from any source distribution.
+
+from __future__ import with_statement
+import unittest
+import sqlite3 as sqlite
+
+did_rollback = False
+
+class MyConnection(sqlite.Connection):
+    def rollback(self):
+        global did_rollback
+        did_rollback = True
+        sqlite.Connection.rollback(self)
+
+class ContextTests(unittest.TestCase):
+    def setUp(self):
+        global did_rollback
+        self.con = sqlite.connect(":memory:", factory=MyConnection)
+        self.con.execute("create table test(c unique)")
+        did_rollback = False
+
+    def tearDown(self):
+        self.con.close()
+
+    def CheckContextManager(self):
+        """Can the connection be used as a context manager at all?"""
+        with self.con:
+            pass
+
+    def CheckContextManagerCommit(self):
+        """Is a commit called in the context manager?"""
+        with self.con:
+            self.con.execute("insert into test(c) values ('foo')")
+        self.con.rollback()
+        count = self.con.execute("select count(*) from test").fetchone()[0]
+        self.failUnlessEqual(count, 1)
+
+    def CheckContextManagerRollback(self):
+        """Is a rollback called in the context manager?"""
+        global did_rollback
+        self.failUnlessEqual(did_rollback, False)
+        try:
+            with self.con:
+                self.con.execute("insert into test(c) values (4)")
+                self.con.execute("insert into test(c) values (4)")
+        except sqlite.IntegrityError:
+            pass
+        self.failUnlessEqual(did_rollback, True)
+
+def suite():
+    ctx_suite = unittest.makeSuite(ContextTests, "Check")
+    return unittest.TestSuite((ctx_suite,))
+
+def test():
+    runner = unittest.TextTestRunner()
+    runner.run(suite())
+
+if __name__ == "__main__":
+    test()