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Diffstat (limited to 'lib/python2.7/sqlite3/test/regression.py')
| -rw-r--r-- | lib/python2.7/sqlite3/test/regression.py | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/lib/python2.7/sqlite3/test/regression.py b/lib/python2.7/sqlite3/test/regression.py new file mode 100644 index 0000000..36fec59 --- /dev/null +++ b/lib/python2.7/sqlite3/test/regression.py @@ -0,0 +1,371 @@ +#-*- coding: iso-8859-1 -*- +# pysqlite2/test/regression.py: pysqlite regression tests +# +# Copyright (C) 2006-2007 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 datetime +import unittest +import sqlite3 as sqlite + +class RegressionTests(unittest.TestCase): + def setUp(self): + self.con = sqlite.connect(":memory:") + + def tearDown(self): + self.con.close() + + def CheckPragmaUserVersion(self): + # This used to crash pysqlite because this pragma command returns NULL for the column name + cur = self.con.cursor() + cur.execute("pragma user_version") + + def CheckPragmaSchemaVersion(self): + # This still crashed pysqlite <= 2.2.1 + con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_COLNAMES) + try: + cur = self.con.cursor() + cur.execute("pragma schema_version") + finally: + cur.close() + con.close() + + def CheckStatementReset(self): + # pysqlite 2.1.0 to 2.2.0 have the problem that not all statements are + # reset before a rollback, but only those that are still in the + # statement cache. The others are not accessible from the connection object. + con = sqlite.connect(":memory:", cached_statements=5) + cursors = [con.cursor() for x in xrange(5)] + cursors[0].execute("create table test(x)") + for i in range(10): + cursors[0].executemany("insert into test(x) values (?)", [(x,) for x in xrange(10)]) + + for i in range(5): + cursors[i].execute(" " * i + "select x from test") + + con.rollback() + + def CheckColumnNameWithSpaces(self): + cur = self.con.cursor() + cur.execute('select 1 as "foo bar [datetime]"') + self.assertEqual(cur.description[0][0], "foo bar") + + cur.execute('select 1 as "foo baz"') + self.assertEqual(cur.description[0][0], "foo baz") + + def CheckStatementFinalizationOnCloseDb(self): + # pysqlite versions <= 2.3.3 only finalized statements in the statement + # cache when closing the database. statements that were still + # referenced in cursors weren't closed and could provoke " + # "OperationalError: Unable to close due to unfinalised statements". + con = sqlite.connect(":memory:") + cursors = [] + # default statement cache size is 100 + for i in range(105): + cur = con.cursor() + cursors.append(cur) + cur.execute("select 1 x union select " + str(i)) + con.close() + + def CheckOnConflictRollback(self): + if sqlite.sqlite_version_info < (3, 2, 2): + return + con = sqlite.connect(":memory:") + con.execute("create table foo(x, unique(x) on conflict rollback)") + con.execute("insert into foo(x) values (1)") + try: + con.execute("insert into foo(x) values (1)") + except sqlite.DatabaseError: + pass + con.execute("insert into foo(x) values (2)") + try: + con.commit() + except sqlite.OperationalError: + self.fail("pysqlite knew nothing about the implicit ROLLBACK") + + def CheckWorkaroundForBuggySqliteTransferBindings(self): + """ + pysqlite would crash with older SQLite versions unless + a workaround is implemented. + """ + self.con.execute("create table foo(bar)") + self.con.execute("drop table foo") + self.con.execute("create table foo(bar)") + + def CheckEmptyStatement(self): + """ + pysqlite used to segfault with SQLite versions 3.5.x. These return NULL + for "no-operation" statements + """ + self.con.execute("") + + def CheckUnicodeConnect(self): + """ + With pysqlite 2.4.0 you needed to use a string or an APSW connection + object for opening database connections. + + Formerly, both bytestrings and unicode strings used to work. + + Let's make sure unicode strings work in the future. + """ + con = sqlite.connect(u":memory:") + con.close() + + def CheckTypeMapUsage(self): + """ + pysqlite until 2.4.1 did not rebuild the row_cast_map when recompiling + a statement. This test exhibits the problem. + """ + SELECT = "select * from foo" + con = sqlite.connect(":memory:",detect_types=sqlite.PARSE_DECLTYPES) + con.execute("create table foo(bar timestamp)") + con.execute("insert into foo(bar) values (?)", (datetime.datetime.now(),)) + con.execute(SELECT) + con.execute("drop table foo") + con.execute("create table foo(bar integer)") + con.execute("insert into foo(bar) values (5)") + con.execute(SELECT) + + def CheckRegisterAdapter(self): + """ + See issue 3312. + """ + self.assertRaises(TypeError, sqlite.register_adapter, {}, None) + + def CheckSetIsolationLevel(self): + """ + See issue 3312. + """ + con = sqlite.connect(":memory:") + self.assertRaises(UnicodeEncodeError, setattr, con, + "isolation_level", u"\xe9") + + def CheckCursorConstructorCallCheck(self): + """ + Verifies that cursor methods check whether base class __init__ was + called. + """ + class Cursor(sqlite.Cursor): + def __init__(self, con): + pass + + con = sqlite.connect(":memory:") + cur = Cursor(con) + try: + cur.execute("select 4+5").fetchall() + self.fail("should have raised ProgrammingError") + except sqlite.ProgrammingError: + pass + except: + self.fail("should have raised ProgrammingError") + + def CheckConnectionConstructorCallCheck(self): + """ + Verifies that connection methods check whether base class __init__ was + called. + """ + class Connection(sqlite.Connection): + def __init__(self, name): + pass + + con = Connection(":memory:") + try: + cur = con.cursor() + self.fail("should have raised ProgrammingError") + except sqlite.ProgrammingError: + pass + except: + self.fail("should have raised ProgrammingError") + + def CheckCursorRegistration(self): + """ + Verifies that subclassed cursor classes are correctly registered with + the connection object, too. (fetch-across-rollback problem) + """ + class Connection(sqlite.Connection): + def cursor(self): + return Cursor(self) + + class Cursor(sqlite.Cursor): + def __init__(self, con): + sqlite.Cursor.__init__(self, con) + + con = Connection(":memory:") + cur = con.cursor() + cur.execute("create table foo(x)") + cur.executemany("insert into foo(x) values (?)", [(3,), (4,), (5,)]) + cur.execute("select x from foo") + con.rollback() + try: + cur.fetchall() + self.fail("should have raised InterfaceError") + except sqlite.InterfaceError: + pass + except: + self.fail("should have raised InterfaceError") + + def CheckAutoCommit(self): + """ + Verifies that creating a connection in autocommit mode works. + 2.5.3 introduced a regression so that these could no longer + be created. + """ + con = sqlite.connect(":memory:", isolation_level=None) + + def CheckPragmaAutocommit(self): + """ + Verifies that running a PRAGMA statement that does an autocommit does + work. This did not work in 2.5.3/2.5.4. + """ + cur = self.con.cursor() + cur.execute("create table foo(bar)") + cur.execute("insert into foo(bar) values (5)") + + cur.execute("pragma page_size") + row = cur.fetchone() + + def CheckSetDict(self): + """ + See http://bugs.python.org/issue7478 + + It was possible to successfully register callbacks that could not be + hashed. Return codes of PyDict_SetItem were not checked properly. + """ + class NotHashable: + def __call__(self, *args, **kw): + pass + def __hash__(self): + raise TypeError() + var = NotHashable() + self.assertRaises(TypeError, self.con.create_function, var) + self.assertRaises(TypeError, self.con.create_aggregate, var) + self.assertRaises(TypeError, self.con.set_authorizer, var) + self.assertRaises(TypeError, self.con.set_progress_handler, var) + + def CheckConnectionCall(self): + """ + Call a connection with a non-string SQL request: check error handling + of the statement constructor. + """ + self.assertRaises(sqlite.Warning, self.con, 1) + + def CheckRecursiveCursorUse(self): + """ + http://bugs.python.org/issue10811 + + Recursively using a cursor, such as when reusing it from a generator led to segfaults. + Now we catch recursive cursor usage and raise a ProgrammingError. + """ + con = sqlite.connect(":memory:") + + cur = con.cursor() + cur.execute("create table a (bar)") + cur.execute("create table b (baz)") + + def foo(): + cur.execute("insert into a (bar) values (?)", (1,)) + yield 1 + + with self.assertRaises(sqlite.ProgrammingError): + cur.executemany("insert into b (baz) values (?)", + ((i,) for i in foo())) + + def CheckConvertTimestampMicrosecondPadding(self): + """ + http://bugs.python.org/issue14720 + + The microsecond parsing of convert_timestamp() should pad with zeros, + since the microsecond string "456" actually represents "456000". + """ + + con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES) + cur = con.cursor() + cur.execute("CREATE TABLE t (x TIMESTAMP)") + + # Microseconds should be 456000 + cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.456')") + + # Microseconds should be truncated to 123456 + cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.123456789')") + + cur.execute("SELECT * FROM t") + values = [x[0] for x in cur.fetchall()] + + self.assertEqual(values, [ + datetime.datetime(2012, 4, 4, 15, 6, 0, 456000), + datetime.datetime(2012, 4, 4, 15, 6, 0, 123456), + ]) + + def CheckInvalidIsolationLevelType(self): + # isolation level is a string, not an integer + self.assertRaises(TypeError, + sqlite.connect, ":memory:", isolation_level=123) + + + def CheckNullCharacter(self): + # Issue #21147 + con = sqlite.connect(":memory:") + self.assertRaises(ValueError, con, "\0select 1") + self.assertRaises(ValueError, con, "select 1\0") + cur = con.cursor() + self.assertRaises(ValueError, cur.execute, " \0select 2") + self.assertRaises(ValueError, cur.execute, "select 2\0") + + def CheckCommitCursorReset(self): + """ + Connection.commit() did reset cursors, which made sqlite3 + to return rows multiple times when fetched from cursors + after commit. See issues 10513 and 23129 for details. + """ + con = sqlite.connect(":memory:") + con.executescript(""" + create table t(c); + create table t2(c); + insert into t values(0); + insert into t values(1); + insert into t values(2); + """) + + self.assertEqual(con.isolation_level, "") + + counter = 0 + for i, row in enumerate(con.execute("select c from t")): + con.execute("insert into t2(c) values (?)", (i,)) + con.commit() + if counter == 0: + self.assertEqual(row[0], 0) + elif counter == 1: + self.assertEqual(row[0], 1) + elif counter == 2: + self.assertEqual(row[0], 2) + counter += 1 + self.assertEqual(counter, 3, "should have returned exactly three rows") + + +def suite(): + regression_suite = unittest.makeSuite(RegressionTests, "Check") + return unittest.TestSuite((regression_suite,)) + +def test(): + runner = unittest.TextTestRunner() + runner.run(suite()) + +if __name__ == "__main__": + test() |