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358 lines
13 KiB
Python
358 lines
13 KiB
Python
#-*- coding: iso-8859-1 -*-
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# pysqlite2/test/regression.py: pysqlite regression tests
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#
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# Copyright (C) 2006-2010 Gerhard Häring <gh@ghaering.de>
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#
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# This file is part of pysqlite.
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#
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# This software is provided 'as-is', without any express or implied
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# warranty. In no event will the authors be held liable for any damages
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# arising from the use of this software.
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#
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# Permission is granted to anyone to use this software for any purpose,
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# including commercial applications, and to alter it and redistribute it
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# freely, subject to the following restrictions:
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#
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# 1. The origin of this software must not be misrepresented; you must not
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# claim that you wrote the original software. If you use this software
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# in a product, an acknowledgment in the product documentation would be
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# appreciated but is not required.
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# 2. Altered source versions must be plainly marked as such, and must not be
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# misrepresented as being the original software.
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# 3. This notice may not be removed or altered from any source distribution.
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import datetime
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import unittest
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import sqlite3 as sqlite
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class RegressionTests(unittest.TestCase):
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def setUp(self):
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self.con = sqlite.connect(":memory:")
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def tearDown(self):
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self.con.close()
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def CheckPragmaUserVersion(self):
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# This used to crash pysqlite because this pragma command returns NULL for the column name
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cur = self.con.cursor()
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cur.execute("pragma user_version")
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def CheckPragmaSchemaVersion(self):
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# This still crashed pysqlite <= 2.2.1
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con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_COLNAMES)
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try:
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cur = self.con.cursor()
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cur.execute("pragma schema_version")
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finally:
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cur.close()
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con.close()
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def CheckStatementReset(self):
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# pysqlite 2.1.0 to 2.2.0 have the problem that not all statements are
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# reset before a rollback, but only those that are still in the
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# statement cache. The others are not accessible from the connection object.
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con = sqlite.connect(":memory:", cached_statements=5)
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cursors = [con.cursor() for x in range(5)]
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cursors[0].execute("create table test(x)")
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for i in range(10):
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cursors[0].executemany("insert into test(x) values (?)", [(x,) for x in range(10)])
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for i in range(5):
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cursors[i].execute(" " * i + "select x from test")
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con.rollback()
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def CheckColumnNameWithSpaces(self):
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cur = self.con.cursor()
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cur.execute('select 1 as "foo bar [datetime]"')
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self.assertEqual(cur.description[0][0], "foo bar")
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cur.execute('select 1 as "foo baz"')
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self.assertEqual(cur.description[0][0], "foo baz")
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def CheckStatementFinalizationOnCloseDb(self):
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# pysqlite versions <= 2.3.3 only finalized statements in the statement
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# cache when closing the database. statements that were still
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# referenced in cursors weren't closed an could provoke "
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# "OperationalError: Unable to close due to unfinalised statements".
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con = sqlite.connect(":memory:")
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cursors = []
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# default statement cache size is 100
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for i in range(105):
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cur = con.cursor()
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cursors.append(cur)
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cur.execute("select 1 x union select " + str(i))
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con.close()
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def CheckOnConflictRollback(self):
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if sqlite.sqlite_version_info < (3, 2, 2):
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return
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con = sqlite.connect(":memory:")
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con.execute("create table foo(x, unique(x) on conflict rollback)")
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con.execute("insert into foo(x) values (1)")
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try:
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con.execute("insert into foo(x) values (1)")
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except sqlite.DatabaseError:
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pass
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con.execute("insert into foo(x) values (2)")
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try:
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con.commit()
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except sqlite.OperationalError:
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self.fail("pysqlite knew nothing about the implicit ROLLBACK")
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def CheckWorkaroundForBuggySqliteTransferBindings(self):
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"""
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pysqlite would crash with older SQLite versions unless
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a workaround is implemented.
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"""
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self.con.execute("create table foo(bar)")
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self.con.execute("drop table foo")
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self.con.execute("create table foo(bar)")
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def CheckEmptyStatement(self):
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"""
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pysqlite used to segfault with SQLite versions 3.5.x. These return NULL
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for "no-operation" statements
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"""
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self.con.execute("")
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def CheckTypeMapUsage(self):
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"""
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pysqlite until 2.4.1 did not rebuild the row_cast_map when recompiling
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a statement. This test exhibits the problem.
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"""
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SELECT = "select * from foo"
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con = sqlite.connect(":memory:",detect_types=sqlite.PARSE_DECLTYPES)
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con.execute("create table foo(bar timestamp)")
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con.execute("insert into foo(bar) values (?)", (datetime.datetime.now(),))
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con.execute(SELECT)
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con.execute("drop table foo")
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con.execute("create table foo(bar integer)")
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con.execute("insert into foo(bar) values (5)")
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con.execute(SELECT)
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def CheckErrorMsgDecodeError(self):
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# When porting the module to Python 3.0, the error message about
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# decoding errors disappeared. This verifies they're back again.
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failure = None
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try:
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self.con.execute("select 'xxx' || ? || 'yyy' colname",
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(bytes(bytearray([250])),)).fetchone()
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failure = "should have raised an OperationalError with detailed description"
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except sqlite.OperationalError as e:
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msg = e.args[0]
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if not msg.startswith("Could not decode to UTF-8 column 'colname' with text 'xxx"):
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failure = "OperationalError did not have expected description text"
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if failure:
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self.fail(failure)
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def CheckRegisterAdapter(self):
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"""
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See issue 3312.
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"""
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self.assertRaises(TypeError, sqlite.register_adapter, {}, None)
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def CheckSetIsolationLevel(self):
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"""
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See issue 3312.
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"""
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con = sqlite.connect(":memory:")
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setattr(con, "isolation_level", "\xe9")
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def CheckCursorConstructorCallCheck(self):
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"""
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Verifies that cursor methods check whether base class __init__ was
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called.
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"""
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class Cursor(sqlite.Cursor):
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def __init__(self, con):
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pass
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con = sqlite.connect(":memory:")
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cur = Cursor(con)
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try:
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cur.execute("select 4+5").fetchall()
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self.fail("should have raised ProgrammingError")
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except sqlite.ProgrammingError:
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pass
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except:
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self.fail("should have raised ProgrammingError")
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def CheckStrSubclass(self):
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"""
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The Python 3.0 port of the module didn't cope with values of subclasses of str.
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"""
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class MyStr(str): pass
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self.con.execute("select ?", (MyStr("abc"),))
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def CheckConnectionConstructorCallCheck(self):
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"""
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Verifies that connection methods check whether base class __init__ was
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called.
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"""
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class Connection(sqlite.Connection):
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def __init__(self, name):
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pass
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con = Connection(":memory:")
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try:
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cur = con.cursor()
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self.fail("should have raised ProgrammingError")
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except sqlite.ProgrammingError:
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pass
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except:
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self.fail("should have raised ProgrammingError")
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def CheckCursorRegistration(self):
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"""
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Verifies that subclassed cursor classes are correctly registered with
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the connection object, too. (fetch-across-rollback problem)
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"""
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class Connection(sqlite.Connection):
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def cursor(self):
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return Cursor(self)
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class Cursor(sqlite.Cursor):
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def __init__(self, con):
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sqlite.Cursor.__init__(self, con)
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con = Connection(":memory:")
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cur = con.cursor()
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cur.execute("create table foo(x)")
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cur.executemany("insert into foo(x) values (?)", [(3,), (4,), (5,)])
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cur.execute("select x from foo")
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con.rollback()
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try:
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cur.fetchall()
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self.fail("should have raised InterfaceError")
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except sqlite.InterfaceError:
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pass
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except:
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self.fail("should have raised InterfaceError")
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def CheckAutoCommit(self):
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"""
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Verifies that creating a connection in autocommit mode works.
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2.5.3 introduced a regression so that these could no longer
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be created.
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"""
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con = sqlite.connect(":memory:", isolation_level=None)
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def CheckPragmaAutocommit(self):
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"""
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Verifies that running a PRAGMA statement that does an autocommit does
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work. This did not work in 2.5.3/2.5.4.
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"""
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cur = self.con.cursor()
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cur.execute("create table foo(bar)")
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cur.execute("insert into foo(bar) values (5)")
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cur.execute("pragma page_size")
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row = cur.fetchone()
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def CheckSetDict(self):
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"""
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See http://bugs.python.org/issue7478
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It was possible to successfully register callbacks that could not be
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hashed. Return codes of PyDict_SetItem were not checked properly.
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"""
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class NotHashable:
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def __call__(self, *args, **kw):
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pass
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def __hash__(self):
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raise TypeError()
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var = NotHashable()
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self.assertRaises(TypeError, self.con.create_function, var)
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self.assertRaises(TypeError, self.con.create_aggregate, var)
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self.assertRaises(TypeError, self.con.set_authorizer, var)
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self.assertRaises(TypeError, self.con.set_progress_handler, var)
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def CheckConnectionCall(self):
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"""
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Call a connection with a non-string SQL request: check error handling
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of the statement constructor.
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"""
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self.assertRaises(sqlite.Warning, self.con, 1)
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def CheckCollation(self):
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def collation_cb(a, b):
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return 1
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self.assertRaises(sqlite.ProgrammingError, self.con.create_collation,
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# Lone surrogate cannot be encoded to the default encoding (utf8)
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"\uDC80", collation_cb)
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def CheckRecursiveCursorUse(self):
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"""
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http://bugs.python.org/issue10811
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Recursively using a cursor, such as when reusing it from a generator led to segfaults.
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Now we catch recursive cursor usage and raise a ProgrammingError.
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"""
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con = sqlite.connect(":memory:")
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cur = con.cursor()
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cur.execute("create table a (bar)")
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cur.execute("create table b (baz)")
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def foo():
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cur.execute("insert into a (bar) values (?)", (1,))
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yield 1
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with self.assertRaises(sqlite.ProgrammingError):
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cur.executemany("insert into b (baz) values (?)",
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((i,) for i in foo()))
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def CheckConvertTimestampMicrosecondPadding(self):
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"""
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http://bugs.python.org/issue14720
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The microsecond parsing of convert_timestamp() should pad with zeros,
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since the microsecond string "456" actually represents "456000".
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"""
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con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES)
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cur = con.cursor()
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cur.execute("CREATE TABLE t (x TIMESTAMP)")
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# Microseconds should be 456000
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cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.456')")
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# Microseconds should be truncated to 123456
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cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.123456789')")
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cur.execute("SELECT * FROM t")
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values = [x[0] for x in cur.fetchall()]
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self.assertEqual(values, [
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datetime.datetime(2012, 4, 4, 15, 6, 0, 456000),
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datetime.datetime(2012, 4, 4, 15, 6, 0, 123456),
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])
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def CheckInvalidIsolationLevelType(self):
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# isolation level is a string, not an integer
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self.assertRaises(TypeError,
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sqlite.connect, ":memory:", isolation_level=123)
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def CheckNullCharacter(self):
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# Issue #21147
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con = sqlite.connect(":memory:")
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self.assertRaises(ValueError, con, "\0select 1")
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self.assertRaises(ValueError, con, "select 1\0")
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cur = con.cursor()
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self.assertRaises(ValueError, cur.execute, " \0select 2")
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self.assertRaises(ValueError, cur.execute, "select 2\0")
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def suite():
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regression_suite = unittest.makeSuite(RegressionTests, "Check")
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return unittest.TestSuite((regression_suite,))
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def test():
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runner = unittest.TextTestRunner()
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runner.run(suite())
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if __name__ == "__main__":
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test()
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