| #-*- coding: iso-8859-1 -*- |
| # pysqlite2/test/transactions.py: tests transactions |
| # |
| # 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 os, unittest |
| import sqlite3 as sqlite |
| |
| def get_db_path(): |
| return "sqlite_testdb" |
| |
| class TransactionTests(unittest.TestCase): |
| def setUp(self): |
| try: |
| os.remove(get_db_path()) |
| except OSError: |
| pass |
| |
| self.con1 = sqlite.connect(get_db_path(), timeout=0.1) |
| self.cur1 = self.con1.cursor() |
| |
| self.con2 = sqlite.connect(get_db_path(), timeout=0.1) |
| self.cur2 = self.con2.cursor() |
| |
| def tearDown(self): |
| self.cur1.close() |
| self.con1.close() |
| |
| self.cur2.close() |
| self.con2.close() |
| |
| try: |
| os.unlink(get_db_path()) |
| except OSError: |
| pass |
| |
| def CheckDMLDoesNotAutoCommitBefore(self): |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| self.cur1.execute("create table test2(j)") |
| self.cur2.execute("select i from test") |
| res = self.cur2.fetchall() |
| self.assertEqual(len(res), 0) |
| |
| def CheckInsertStartsTransaction(self): |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| self.cur2.execute("select i from test") |
| res = self.cur2.fetchall() |
| self.assertEqual(len(res), 0) |
| |
| def CheckUpdateStartsTransaction(self): |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| self.con1.commit() |
| self.cur1.execute("update test set i=6") |
| self.cur2.execute("select i from test") |
| res = self.cur2.fetchone()[0] |
| self.assertEqual(res, 5) |
| |
| def CheckDeleteStartsTransaction(self): |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| self.con1.commit() |
| self.cur1.execute("delete from test") |
| self.cur2.execute("select i from test") |
| res = self.cur2.fetchall() |
| self.assertEqual(len(res), 1) |
| |
| def CheckReplaceStartsTransaction(self): |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| self.con1.commit() |
| self.cur1.execute("replace into test(i) values (6)") |
| self.cur2.execute("select i from test") |
| res = self.cur2.fetchall() |
| self.assertEqual(len(res), 1) |
| self.assertEqual(res[0][0], 5) |
| |
| def CheckToggleAutoCommit(self): |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| self.con1.isolation_level = None |
| self.assertEqual(self.con1.isolation_level, None) |
| self.cur2.execute("select i from test") |
| res = self.cur2.fetchall() |
| self.assertEqual(len(res), 1) |
| |
| self.con1.isolation_level = "DEFERRED" |
| self.assertEqual(self.con1.isolation_level , "DEFERRED") |
| self.cur1.execute("insert into test(i) values (5)") |
| self.cur2.execute("select i from test") |
| res = self.cur2.fetchall() |
| self.assertEqual(len(res), 1) |
| |
| @unittest.skipIf(sqlite.sqlite_version_info < (3, 2, 2), |
| 'test hangs on sqlite versions older than 3.2.2') |
| def CheckRaiseTimeout(self): |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| with self.assertRaises(sqlite.OperationalError): |
| self.cur2.execute("insert into test(i) values (5)") |
| |
| @unittest.skipIf(sqlite.sqlite_version_info < (3, 2, 2), |
| 'test hangs on sqlite versions older than 3.2.2') |
| def CheckLocking(self): |
| """ |
| This tests the improved concurrency with pysqlite 2.3.4. You needed |
| to roll back con2 before you could commit con1. |
| """ |
| self.cur1.execute("create table test(i)") |
| self.cur1.execute("insert into test(i) values (5)") |
| with self.assertRaises(sqlite.OperationalError): |
| self.cur2.execute("insert into test(i) values (5)") |
| # NO self.con2.rollback() HERE!!! |
| self.con1.commit() |
| |
| def CheckRollbackCursorConsistency(self): |
| """ |
| Checks if cursors on the connection are set into a "reset" state |
| when a rollback is done on the connection. |
| """ |
| con = sqlite.connect(":memory:") |
| cur = con.cursor() |
| cur.execute("create table test(x)") |
| cur.execute("insert into test(x) values (5)") |
| cur.execute("select 1 union select 2 union select 3") |
| |
| con.rollback() |
| with self.assertRaises(sqlite.InterfaceError): |
| cur.fetchall() |
| |
| class SpecialCommandTests(unittest.TestCase): |
| def setUp(self): |
| self.con = sqlite.connect(":memory:") |
| self.cur = self.con.cursor() |
| |
| def CheckDropTable(self): |
| self.cur.execute("create table test(i)") |
| self.cur.execute("insert into test(i) values (5)") |
| self.cur.execute("drop table test") |
| |
| def CheckPragma(self): |
| self.cur.execute("create table test(i)") |
| self.cur.execute("insert into test(i) values (5)") |
| self.cur.execute("pragma count_changes=1") |
| |
| def tearDown(self): |
| self.cur.close() |
| self.con.close() |
| |
| class TransactionalDDL(unittest.TestCase): |
| def setUp(self): |
| self.con = sqlite.connect(":memory:") |
| |
| def CheckDdlDoesNotAutostartTransaction(self): |
| # For backwards compatibility reasons, DDL statements should not |
| # implicitly start a transaction. |
| self.con.execute("create table test(i)") |
| self.con.rollback() |
| result = self.con.execute("select * from test").fetchall() |
| self.assertEqual(result, []) |
| |
| def CheckImmediateTransactionalDDL(self): |
| # You can achieve transactional DDL by issuing a BEGIN |
| # statement manually. |
| self.con.execute("begin immediate") |
| self.con.execute("create table test(i)") |
| self.con.rollback() |
| with self.assertRaises(sqlite.OperationalError): |
| self.con.execute("select * from test") |
| |
| def CheckTransactionalDDL(self): |
| # You can achieve transactional DDL by issuing a BEGIN |
| # statement manually. |
| self.con.execute("begin") |
| self.con.execute("create table test(i)") |
| self.con.rollback() |
| with self.assertRaises(sqlite.OperationalError): |
| self.con.execute("select * from test") |
| |
| def tearDown(self): |
| self.con.close() |
| |
| def suite(): |
| default_suite = unittest.makeSuite(TransactionTests, "Check") |
| special_command_suite = unittest.makeSuite(SpecialCommandTests, "Check") |
| ddl_suite = unittest.makeSuite(TransactionalDDL, "Check") |
| return unittest.TestSuite((default_suite, special_command_suite, ddl_suite)) |
| |
| def test(): |
| runner = unittest.TextTestRunner() |
| runner.run(suite()) |
| |
| if __name__ == "__main__": |
| test() |