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#-*- coding: ISO-8859-1 -*-
# pysqlite2/test/regression.py: pysqlite regression tests
#
# 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 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 range(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 range(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 CheckStatementAvailable(self):
# pysqlite up to 2.3.2 crashed on this, because the active statement handle was not checked
# before trying to fetch data from it. close() destroys the active statement ...
con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES)
cur = con.cursor()
cur.execute("select 4 union select 5")
cur.close()
cur.fetchone()
cur.fetchone()
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 an 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 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 CheckErrorMsgDecodeError(self):
# When porting the module to Python 3.0, the error message about
# decoding errors disappeared. This verifies they're back again.
failure = None
try:
self.con.execute("select 'xxx' || ? || 'yyy' colname",
(bytes(bytearray([250])),)).fetchone()
failure = "should have raised an OperationalError with detailed description"
except sqlite.OperationalError as e:
msg = e.args[0]
if not msg.startswith("Could not decode to UTF-8 column 'colname' with text 'xxx"):
failure = "OperationalError did not have expected description text"
if failure:
self.fail(failure)
def CheckRegisterAdapter(self):
"""
See issue 3312.
"""
self.assertRaises(TypeError, sqlite.register_adapter, {}, None)
def CheckSetIsolationLevel(self):
"""
See issue 3312.
"""
con = sqlite.connect(":memory:")
setattr(con, "isolation_level", "\xe9")
def CheckStrSubclass(self):
"""
The Python 3.0 port of the module didn't cope with values of subclasses of str.
"""
class MyStr(str): pass
self.con.execute("select ?", (MyStr("abc"),))
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()
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