1 #-*- coding: ISO-8859-1 -*-

     2 # pysqlite2/test/regression.py: pysqlite regression tests

     3 #

     4 # Copyright (C) 2006-2007 Gerhard Häring <gh@ghaering.de>

     5 #

     6 # This file is part of pysqlite.

     7 #

     8 # This software is provided 'as-is', without any express or implied

     9 # warranty.  In no event will the authors be held liable for any damages

    10 # arising from the use of this software.

    11 #

    12 # Permission is granted to anyone to use this software for any purpose,

    13 # including commercial applications, and to alter it and redistribute it

    14 # freely, subject to the following restrictions:

    15 #

    16 # 1. The origin of this software must not be misrepresented; you must not

    17 #    claim that you wrote the original software. If you use this software

    18 #    in a product, an acknowledgment in the product documentation would be

    19 #    appreciated but is not required.

    20 # 2. Altered source versions must be plainly marked as such, and must not be

    21 #    misrepresented as being the original software.

    22 # 3. This notice may not be removed or altered from any source distribution.

    23 

    24 import datetime

    25 import unittest

    26 import sqlite3 as sqlite

    27 

    28 class RegressionTests(unittest.TestCase):

    29     def setUp(self):

    30         self.con = sqlite.connect(":memory:")

    31 

    32     def tearDown(self):

    33         self.con.close()

    34 

    35     def CheckPragmaUserVersion(self):

    36         # This used to crash pysqlite because this pragma command returns NULL for the column name

    37         cur = self.con.cursor()

    38         cur.execute("pragma user_version")

    39 

    40     def CheckPragmaSchemaVersion(self):

    41         # This still crashed pysqlite <= 2.2.1

    42         con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_COLNAMES)

    43         try:

    44             cur = self.con.cursor()

    45             cur.execute("pragma schema_version")

    46         finally:

    47             cur.close()

    48             con.close()

    49 

    50     def CheckStatementReset(self):

    51         # pysqlite 2.1.0 to 2.2.0 have the problem that not all statements are

    52         # reset before a rollback, but only those that are still in the

    53         # statement cache. The others are not accessible from the connection object.

    54         con = sqlite.connect(":memory:", cached_statements=5)

    55         cursors = [con.cursor() for x in xrange(5)]

    56         cursors[0].execute("create table test(x)")

    57         for i in range(10):

    58             cursors[0].executemany("insert into test(x) values (?)", [(x,) for x in xrange(10)])

    59 

    60         for i in range(5):

    61             cursors[i].execute(" " * i + "select x from test")

    62 

    63         con.rollback()

    64 

    65     def CheckColumnNameWithSpaces(self):

    66         cur = self.con.cursor()

    67         cur.execute('select 1 as "foo bar [datetime]"')

    68         self.failUnlessEqual(cur.description[0][0], "foo bar")

    69 

    70         cur.execute('select 1 as "foo baz"')

    71         self.failUnlessEqual(cur.description[0][0], "foo baz")

    72 

    73     def CheckStatementAvailable(self):

    74         # pysqlite up to 2.3.2 crashed on this, because the active statement handle was not checked

    75         # before trying to fetch data from it. close() destroys the active statement ...

    76         con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES)

    77         cur = con.cursor()

    78         cur.execute("select 4 union select 5")

    79         cur.close()

    80         cur.fetchone()

    81         cur.fetchone()

    82 

    83     def CheckStatementFinalizationOnCloseDb(self):

    84         # pysqlite versions <= 2.3.3 only finalized statements in the statement

    85         # cache when closing the database. statements that were still

    86         # referenced in cursors weren't closed an could provoke "

    87         # "OperationalError: Unable to close due to unfinalised statements".

    88         con = sqlite.connect(":memory:")

    89         cursors = []

    90         # default statement cache size is 100

    91         for i in range(105):

    92             cur = con.cursor()

    93             cursors.append(cur)

    94             cur.execute("select 1 x union select " + str(i))

    95         con.close()

    96 

    97     def CheckOnConflictRollback(self):

    98         if sqlite.sqlite_version_info < (3, 2, 2):

    99             return

   100         con = sqlite.connect(":memory:")

   101         con.execute("create table foo(x, unique(x) on conflict rollback)")

   102         con.execute("insert into foo(x) values (1)")

   103         try:

   104             con.execute("insert into foo(x) values (1)")

   105         except sqlite.DatabaseError:

   106             pass

   107         con.execute("insert into foo(x) values (2)")

   108         try:

   109             con.commit()

   110         except sqlite.OperationalError:

   111             self.fail("pysqlite knew nothing about the implicit ROLLBACK")

   112 

   113     def CheckWorkaroundForBuggySqliteTransferBindings(self):

   114         """

   115         pysqlite would crash with older SQLite versions unless

   116         a workaround is implemented.

   117         """

   118         self.con.execute("create table foo(bar)")

   119         self.con.execute("drop table foo")

   120         self.con.execute("create table foo(bar)")

   121 

   122     def CheckEmptyStatement(self):

   123         """

   124         pysqlite used to segfault with SQLite versions 3.5.x. These return NULL

   125         for "no-operation" statements

   126         """

   127         self.con.execute("")

   128 

   129     def CheckUnicodeConnect(self):

   130         """

   131         With pysqlite 2.4.0 you needed to use a string or a APSW connection

   132         object for opening database connections.

   133 

   134         Formerly, both bytestrings and unicode strings used to work.

   135 

   136         Let's make sure unicode strings work in the future.

   137         """

   138         con = sqlite.connect(u":memory:")

   139         con.close()

   140 

   141     def CheckTypeMapUsage(self):

   142         """

   143         pysqlite until 2.4.1 did not rebuild the row_cast_map when recompiling

   144         a statement. This test exhibits the problem.

   145         """

   146         SELECT = "select * from foo"

   147         con = sqlite.connect(":memory:",detect_types=sqlite.PARSE_DECLTYPES)

   148         con.execute("create table foo(bar timestamp)")

   149         con.execute("insert into foo(bar) values (?)", (datetime.datetime.now(),))

   150         con.execute(SELECT)

   151         con.execute("drop table foo")

   152         con.execute("create table foo(bar integer)")

   153         con.execute("insert into foo(bar) values (5)")

   154         con.execute(SELECT)

   155 

   156     def CheckRegisterAdapter(self):

   157         """

   158         See issue 3312.

   159         """

   160         self.assertRaises(TypeError, sqlite.register_adapter, {}, None)

   161 

   162     def CheckSetIsolationLevel(self):

   163         """

   164         See issue 3312.

   165         """

   166         con = sqlite.connect(":memory:")

   167         self.assertRaises(UnicodeEncodeError, setattr, con,

   168                           "isolation_level", u"\xe9")

   169 

   170 

   171 def suite():

   172     regression_suite = unittest.makeSuite(RegressionTests, "Check")

   173     return unittest.TestSuite((regression_suite,))

   174 

   175 def test():

   176     runner = unittest.TextTestRunner()

   177     runner.run(suite())

   178 

   179 if __name__ == "__main__":

   180     test()