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diff --git a/lib/test/userfunctions.py b/lib/test/userfunctions.py
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+#-*- coding: ISO-8859-1 -*-
+# pysqlite2/test/userfunctions.py: tests for user-defined functions and
+#                                  aggregates.
+#
+# Copyright (C) 2005-2007 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.
+
+import unittest
+import pysqlcipher.dbapi2 as sqlite
+
+def func_returntext():
+    return "foo"
+def func_returnunicode():
+    return u"bar"
+def func_returnint():
+    return 42
+def func_returnfloat():
+    return 3.14
+def func_returnnull():
+    return None
+def func_returnblob():
+    return buffer("blob")
+def func_raiseexception():
+    5 // 0
+
+def func_isstring(v):
+    return type(v) is unicode
+def func_isint(v):
+    return type(v) is int
+def func_isfloat(v):
+    return type(v) is float
+def func_isnone(v):
+    return type(v) is type(None)
+def func_isblob(v):
+    return type(v) is buffer
+
+class AggrNoStep:
+    def __init__(self):
+        pass
+
+    def finalize(self):
+        return 1
+
+class AggrNoFinalize:
+    def __init__(self):
+        pass
+
+    def step(self, x):
+        pass
+
+class AggrExceptionInInit:
+    def __init__(self):
+        5 // 0
+
+    def step(self, x):
+        pass
+
+    def finalize(self):
+        pass
+
+class AggrExceptionInStep:
+    def __init__(self):
+        pass
+
+    def step(self, x):
+        5 // 0
+
+    def finalize(self):
+        return 42
+
+class AggrExceptionInFinalize:
+    def __init__(self):
+        pass
+
+    def step(self, x):
+        pass
+
+    def finalize(self):
+        5 // 0
+
+class AggrCheckType:
+    def __init__(self):
+        self.val = None
+
+    def step(self, whichType, val):
+        theType = {"str": unicode, "int": int, "float": float, "None": type(None), "blob": buffer}
+        self.val = int(theType[whichType] is type(val))
+
+    def finalize(self):
+        return self.val
+
+class AggrSum:
+    def __init__(self):
+        self.val = 0.0
+
+    def step(self, val):
+        self.val += val
+
+    def finalize(self):
+        return self.val
+
+class FunctionTests(unittest.TestCase):
+    def setUp(self):
+        self.con = sqlite.connect(":memory:")
+
+        self.con.create_function("returntext", 0, func_returntext)
+        self.con.create_function("returnunicode", 0, func_returnunicode)
+        self.con.create_function("returnint", 0, func_returnint)
+        self.con.create_function("returnfloat", 0, func_returnfloat)
+        self.con.create_function("returnnull", 0, func_returnnull)
+        self.con.create_function("returnblob", 0, func_returnblob)
+        self.con.create_function("raiseexception", 0, func_raiseexception)
+
+        self.con.create_function("isstring", 1, func_isstring)
+        self.con.create_function("isint", 1, func_isint)
+        self.con.create_function("isfloat", 1, func_isfloat)
+        self.con.create_function("isnone", 1, func_isnone)
+        self.con.create_function("isblob", 1, func_isblob)
+
+    def tearDown(self):
+        self.con.close()
+
+    def CheckFuncErrorOnCreate(self):
+        try:
+            self.con.create_function("bla", -100, lambda x: 2*x)
+            self.fail("should have raised an OperationalError")
+        except sqlite.OperationalError:
+            pass
+
+    def CheckFuncRefCount(self):
+        def getfunc():
+            def f():
+                return 1
+            return f
+        f = getfunc()
+        globals()["foo"] = f
+        # self.con.create_function("reftest", 0, getfunc())
+        self.con.create_function("reftest", 0, f)
+        cur = self.con.cursor()
+        cur.execute("select reftest()")
+
+    def CheckFuncReturnText(self):
+        cur = self.con.cursor()
+        cur.execute("select returntext()")
+        val = cur.fetchone()[0]
+        self.assertEqual(type(val), unicode)
+        self.assertEqual(val, "foo")
+
+    def CheckFuncReturnUnicode(self):
+        cur = self.con.cursor()
+        cur.execute("select returnunicode()")
+        val = cur.fetchone()[0]
+        self.assertEqual(type(val), unicode)
+        self.assertEqual(val, u"bar")
+
+    def CheckFuncReturnInt(self):
+        cur = self.con.cursor()
+        cur.execute("select returnint()")
+        val = cur.fetchone()[0]
+        self.assertEqual(type(val), int)
+        self.assertEqual(val, 42)
+
+    def CheckFuncReturnFloat(self):
+        cur = self.con.cursor()
+        cur.execute("select returnfloat()")
+        val = cur.fetchone()[0]
+        self.assertEqual(type(val), float)
+        if val < 3.139 or val > 3.141:
+            self.fail("wrong value")
+
+    def CheckFuncReturnNull(self):
+        cur = self.con.cursor()
+        cur.execute("select returnnull()")
+        val = cur.fetchone()[0]
+        self.assertEqual(type(val), type(None))
+        self.assertEqual(val, None)
+
+    def CheckFuncReturnBlob(self):
+        cur = self.con.cursor()
+        cur.execute("select returnblob()")
+        val = cur.fetchone()[0]
+        self.assertEqual(type(val), buffer)
+        self.assertEqual(val, buffer("blob"))
+
+    def CheckFuncException(self):
+        cur = self.con.cursor()
+        try:
+            cur.execute("select raiseexception()")
+            cur.fetchone()
+            self.fail("should have raised OperationalError")
+        except sqlite.OperationalError, e:
+            self.assertEqual(e.args[0], 'user-defined function raised exception')
+
+    def CheckParamString(self):
+        cur = self.con.cursor()
+        cur.execute("select isstring(?)", ("foo",))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckParamInt(self):
+        cur = self.con.cursor()
+        cur.execute("select isint(?)", (42,))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckParamFloat(self):
+        cur = self.con.cursor()
+        cur.execute("select isfloat(?)", (3.14,))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckParamNone(self):
+        cur = self.con.cursor()
+        cur.execute("select isnone(?)", (None,))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckParamBlob(self):
+        cur = self.con.cursor()
+        cur.execute("select isblob(?)", (buffer("blob"),))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+class AggregateTests(unittest.TestCase):
+    def setUp(self):
+        self.con = sqlite.connect(":memory:")
+        cur = self.con.cursor()
+        cur.execute("""
+            create table test(
+                t text,
+                i integer,
+                f float,
+                n,
+                b blob
+                )
+            """)
+        cur.execute("insert into test(t, i, f, n, b) values (?, ?, ?, ?, ?)",
+            ("foo", 5, 3.14, None, buffer("blob"),))
+
+        self.con.create_aggregate("nostep", 1, AggrNoStep)
+        self.con.create_aggregate("nofinalize", 1, AggrNoFinalize)
+        self.con.create_aggregate("excInit", 1, AggrExceptionInInit)
+        self.con.create_aggregate("excStep", 1, AggrExceptionInStep)
+        self.con.create_aggregate("excFinalize", 1, AggrExceptionInFinalize)
+        self.con.create_aggregate("checkType", 2, AggrCheckType)
+        self.con.create_aggregate("mysum", 1, AggrSum)
+
+    def tearDown(self):
+        #self.cur.close()
+        #self.con.close()
+        pass
+
+    def CheckAggrErrorOnCreate(self):
+        try:
+            self.con.create_function("bla", -100, AggrSum)
+            self.fail("should have raised an OperationalError")
+        except sqlite.OperationalError:
+            pass
+
+    def CheckAggrNoStep(self):
+        cur = self.con.cursor()
+        try:
+            cur.execute("select nostep(t) from test")
+            self.fail("should have raised an AttributeError")
+        except AttributeError, e:
+            self.assertEqual(e.args[0], "AggrNoStep instance has no attribute 'step'")
+
+    def CheckAggrNoFinalize(self):
+        cur = self.con.cursor()
+        try:
+            cur.execute("select nofinalize(t) from test")
+            val = cur.fetchone()[0]
+            self.fail("should have raised an OperationalError")
+        except sqlite.OperationalError, e:
+            self.assertEqual(e.args[0], "user-defined aggregate's 'finalize' method raised error")
+
+    def CheckAggrExceptionInInit(self):
+        cur = self.con.cursor()
+        try:
+            cur.execute("select excInit(t) from test")
+            val = cur.fetchone()[0]
+            self.fail("should have raised an OperationalError")
+        except sqlite.OperationalError, e:
+            self.assertEqual(e.args[0], "user-defined aggregate's '__init__' method raised error")
+
+    def CheckAggrExceptionInStep(self):
+        cur = self.con.cursor()
+        try:
+            cur.execute("select excStep(t) from test")
+            val = cur.fetchone()[0]
+            self.fail("should have raised an OperationalError")
+        except sqlite.OperationalError, e:
+            self.assertEqual(e.args[0], "user-defined aggregate's 'step' method raised error")
+
+    def CheckAggrExceptionInFinalize(self):
+        cur = self.con.cursor()
+        try:
+            cur.execute("select excFinalize(t) from test")
+            val = cur.fetchone()[0]
+            self.fail("should have raised an OperationalError")
+        except sqlite.OperationalError, e:
+            self.assertEqual(e.args[0], "user-defined aggregate's 'finalize' method raised error")
+
+    def CheckAggrCheckParamStr(self):
+        cur = self.con.cursor()
+        cur.execute("select checkType('str', ?)", ("foo",))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckAggrCheckParamInt(self):
+        cur = self.con.cursor()
+        cur.execute("select checkType('int', ?)", (42,))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckAggrCheckParamFloat(self):
+        cur = self.con.cursor()
+        cur.execute("select checkType('float', ?)", (3.14,))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckAggrCheckParamNone(self):
+        cur = self.con.cursor()
+        cur.execute("select checkType('None', ?)", (None,))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckAggrCheckParamBlob(self):
+        cur = self.con.cursor()
+        cur.execute("select checkType('blob', ?)", (buffer("blob"),))
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 1)
+
+    def CheckAggrCheckAggrSum(self):
+        cur = self.con.cursor()
+        cur.execute("delete from test")
+        cur.executemany("insert into test(i) values (?)", [(10,), (20,), (30,)])
+        cur.execute("select mysum(i) from test")
+        val = cur.fetchone()[0]
+        self.assertEqual(val, 60)
+
+def authorizer_cb(action, arg1, arg2, dbname, source):
+    if action != sqlite.SQLITE_SELECT:
+        return sqlite.SQLITE_DENY
+    if arg2 == 'c2' or arg1 == 't2':
+        return sqlite.SQLITE_DENY
+    return sqlite.SQLITE_OK
+
+class AuthorizerTests(unittest.TestCase):
+    def setUp(self):
+        self.con = sqlite.connect(":memory:")
+        self.con.executescript("""
+            create table t1 (c1, c2);
+            create table t2 (c1, c2);
+            insert into t1 (c1, c2) values (1, 2);
+            insert into t2 (c1, c2) values (4, 5);
+            """)
+
+        # For our security test:
+        self.con.execute("select c2 from t2")
+
+        self.con.set_authorizer(authorizer_cb)
+
+    def tearDown(self):
+        pass
+
+    def CheckTableAccess(self):
+        try:
+            self.con.execute("select * from t2")
+        except sqlite.DatabaseError, e:
+            if not e.args[0].endswith("prohibited"):
+                self.fail("wrong exception text: %s" % e.args[0])
+            return
+        self.fail("should have raised an exception due to missing privileges")
+
+    def CheckColumnAccess(self):
+        try:
+            self.con.execute("select c2 from t1")
+        except sqlite.DatabaseError, e:
+            if not e.args[0].endswith("prohibited"):
+                self.fail("wrong exception text: %s" % e.args[0])
+            return
+        self.fail("should have raised an exception due to missing privileges")
+
+def suite():
+    function_suite = unittest.makeSuite(FunctionTests, "Check")
+    aggregate_suite = unittest.makeSuite(AggregateTests, "Check")
+    authorizer_suite = unittest.makeSuite(AuthorizerTests, "Check")
+    return unittest.TestSuite((function_suite, aggregate_suite, authorizer_suite))
+
+def test():
+    runner = unittest.TextTestRunner()
+    runner.run(suite())
+
+if __name__ == "__main__":
+    test()