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#-*- coding: ISO-8859-1 -*-
# pysqlite2/test/hooks.py: tests for various SQLite-specific hooks
#
# Copyright (C) 2006 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 sqlite3 as sqlite
class CollationTests(unittest.TestCase):
def setUp(self):
pass
def tearDown(self):
pass
def CheckCreateCollationNotCallable(self):
con = sqlite.connect(":memory:")
try:
con.create_collation("X", 42)
self.fail("should have raised a TypeError")
except TypeError as e:
self.failUnlessEqual(e.args[0], "parameter must be callable")
def CheckCreateCollationNotAscii(self):
con = sqlite.connect(":memory:")
try:
con.create_collation("collä", cmp)
self.fail("should have raised a ProgrammingError")
except sqlite.ProgrammingError as e:
pass
def CheckCollationIsUsed(self):
if sqlite.version_info < (3, 2, 1): # old SQLite versions crash on this test
return
def mycoll(x, y):
# reverse order
return -cmp(x, y)
con = sqlite.connect(":memory:")
con.create_collation("mycoll", mycoll)
sql = """
select x from (
select 'a' as x
union
select 'b' as x
union
select 'c' as x
) order by x collate mycoll
"""
result = con.execute(sql).fetchall()
if result[0][0] != "c" or result[1][0] != "b" or result[2][0] != "a":
self.fail("the expected order was not returned")
con.create_collation("mycoll", None)
try:
result = con.execute(sql).fetchall()
self.fail("should have raised an OperationalError")
except sqlite.OperationalError as e:
self.failUnlessEqual(e.args[0].lower(), "no such collation sequence: mycoll")
def CheckCollationRegisterTwice(self):
"""
Register two different collation functions under the same name.
Verify that the last one is actually used.
"""
con = sqlite.connect(":memory:")
con.create_collation("mycoll", cmp)
con.create_collation("mycoll", lambda x, y: -cmp(x, y))
result = con.execute("""
select x from (select 'a' as x union select 'b' as x) order by x collate mycoll
""").fetchall()
if result[0][0] != 'b' or result[1][0] != 'a':
self.fail("wrong collation function is used")
def CheckDeregisterCollation(self):
"""
Register a collation, then deregister it. Make sure an error is raised if we try
to use it.
"""
con = sqlite.connect(":memory:")
con.create_collation("mycoll", cmp)
con.create_collation("mycoll", None)
try:
con.execute("select 'a' as x union select 'b' as x order by x collate mycoll")
self.fail("should have raised an OperationalError")
except sqlite.OperationalError as e:
if not e.args[0].startswith("no such collation sequence"):
self.fail("wrong OperationalError raised")
def suite():
collation_suite = unittest.makeSuite(CollationTests, "Check")
return unittest.TestSuite((collation_suite,))
def test():
runner = unittest.TextTestRunner()
runner.run(suite())
if __name__ == "__main__":
test()
|
