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#-*- coding: ISO-8859-1 -*- # pysqlite2/test/transactions.py: tests transactions # # Copyright (C) 2005-2007 Gerhard HοΏ½ring <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 sys 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 CheckDMLdoesAutoCommitBefore(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), 1) 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) def CheckRaiseTimeout(self): if sqlite.sqlite_version_info < (3, 2, 2): # This will fail (hang) on earlier versions of sqlite. # Determine exact version it was fixed. 3.2.1 hangs. return self.cur1.execute("create table test(i)") self.cur1.execute("insert into test(i) values (5)") try: self.cur2.execute("insert into test(i) values (5)") self.fail("should have raised an OperationalError") except sqlite.OperationalError: pass except: self.fail("should have raised an OperationalError") def CheckLocking(self): """ This tests the improved concurrency with pysqlite 2.3.4. You needed to roll back con2 before you could commit con1. """ if sqlite.sqlite_version_info < (3, 2, 2): # This will fail (hang) on earlier versions of sqlite. # Determine exact version it was fixed. 3.2.1 hangs. return self.cur1.execute("create table test(i)") self.cur1.execute("insert into test(i) values (5)") try: self.cur2.execute("insert into test(i) values (5)") self.fail("should have raised an OperationalError") except sqlite.OperationalError: pass except: self.fail("should have raised an OperationalError") # 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() try: cur.fetchall() self.fail("InterfaceError should have been raised") except sqlite.InterfaceError, e: pass except: self.fail("InterfaceError should have been raised") class SpecialCommandTests(unittest.TestCase): def setUp(self): self.con = sqlite.connect(":memory:") self.cur = self.con.cursor() def CheckVacuum(self): self.cur.execute("create table test(i)") self.cur.execute("insert into test(i) values (5)") self.cur.execute("vacuum") 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() def suite(): default_suite = unittest.makeSuite(TransactionTests, "Check") special_command_suite = unittest.makeSuite(SpecialCommandTests, "Check") return unittest.TestSuite((default_suite, special_command_suite)) def test(): runner = unittest.TextTestRunner() runner.run(suite()) if __name__ == "__main__": test()
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