python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/sqlite3/test/transactions.py

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+#-*- 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()