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#-*- coding: iso-8859-1 -*-
# pysqlite2/test/types.py: tests for type conversion and detection
#
# Copyright (C) 2005 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
try:
import zlib
except ImportError:
zlib = None
class SqliteTypeTests(unittest.TestCase):
def setUp(self):
self.con = sqlite.connect(":memory:")
self.cur = self.con.cursor()
self.cur.execute("create table test(i integer, s varchar, f number, b blob)")
def tearDown(self):
self.cur.close()
self.con.close()
def CheckString(self):
self.cur.execute("insert into test(s) values (?)", ("Österreich",))
self.cur.execute("select s from test")
row = self.cur.fetchone()
self.assertEqual(row[0], "Österreich")
def CheckSmallInt(self):
self.cur.execute("insert into test(i) values (?)", (42,))
self.cur.execute("select i from test")
row = self.cur.fetchone()
self.assertEqual(row[0], 42)
def CheckLargeInt(self):
num = 2**40
self.cur.execute("insert into test(i) values (?)", (num,))
self.cur.execute("select i from test")
row = self.cur.fetchone()
self.assertEqual(row[0], num)
def CheckFloat(self):
val = 3.14
self.cur.execute("insert into test(f) values (?)", (val,))
self.cur.execute("select f from test")
row = self.cur.fetchone()
self.assertEqual(row[0], val)
def CheckBlob(self):
sample = b"Guglhupf"
val = memoryview(sample)
self.cur.execute("insert into test(b) values (?)", (val,))
self.cur.execute("select b from test")
row = self.cur.fetchone()
self.assertEqual(row[0], sample)
def CheckUnicodeExecute(self):
self.cur.execute("select 'Österreich'")
row = self.cur.fetchone()
self.assertEqual(row[0], "Österreich")
class DeclTypesTests(unittest.TestCase):
class Foo:
def __init__(self, _val):
if isinstance(_val, bytes):
# sqlite3 always calls __init__ with a bytes created from a
# UTF-8 string when __conform__ was used to store the object.
_val = _val.decode('utf-8')
self.val = _val
def __cmp__(self, other):
if not isinstance(other, DeclTypesTests.Foo):
raise ValueError
if self.val == other.val:
return 0
else:
return 1
def __eq__(self, other):
c = self.__cmp__(other)
if c is NotImplemented:
return c
return c == 0
def __conform__(self, protocol):
if protocol is sqlite.PrepareProtocol:
return self.val
else:
return None
def __str__(self):
return "<%s>" % self.val
def setUp(self):
self.con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES)
self.cur = self.con.cursor()
self.cur.execute("create table test(i int, s str, f float, b bool, u unicode, foo foo, bin blob, n1 number, n2 number(5))")
# override float, make them always return the same number
sqlite.converters["FLOAT"] = lambda x: 47.2
# and implement two custom ones
sqlite.converters["BOOL"] = lambda x: bool(int(x))
sqlite.converters["FOO"] = DeclTypesTests.Foo
sqlite.converters["WRONG"] = lambda x: "WRONG"
sqlite.converters["NUMBER"] = float
def tearDown(self):
del sqlite.converters["FLOAT"]
del sqlite.converters["BOOL"]
del sqlite.converters["FOO"]
del sqlite.converters["NUMBER"]
self.cur.close()
self.con.close()
def CheckString(self):
# default
self.cur.execute("insert into test(s) values (?)", ("foo",))
self.cur.execute('select s as "s [WRONG]" from test')
row = self.cur.fetchone()
self.assertEqual(row[0], "foo")
def CheckSmallInt(self):
# default
self.cur.execute("insert into test(i) values (?)", (42,))
self.cur.execute("select i from test")
row = self.cur.fetchone()
self.assertEqual(row[0], 42)
def CheckLargeInt(self):
# default
num = 2**40
self.cur.execute("insert into test(i) values (?)", (num,))
self.cur.execute("select i from test")
row = self.cur.fetchone()
self.assertEqual(row[0], num)
def CheckFloat(self):
# custom
val = 3.14
self.cur.execute("insert into test(f) values (?)", (val,))
self.cur.execute("select f from test")
row = self.cur.fetchone()
self.assertEqual(row[0], 47.2)
def CheckBool(self):
# custom
self.cur.execute("insert into test(b) values (?)", (False,))
self.cur.execute("select b from test")
row = self.cur.fetchone()
self.assertEqual(row[0], False)
self.cur.execute("delete from test")
self.cur.execute("insert into test(b) values (?)", (True,))
self.cur.execute("select b from test")
row = self.cur.fetchone()
self.assertEqual(row[0], True)
def CheckUnicode(self):
# default
val = "\xd6sterreich"
self.cur.execute("insert into test(u) values (?)", (val,))
self.cur.execute("select u from test")
row = self.cur.fetchone()
self.assertEqual(row[0], val)
def CheckFoo(self):
val = DeclTypesTests.Foo("bla")
self.cur.execute("insert into test(foo) values (?)", (val,))
self.cur.execute("select foo from test")
row = self.cur.fetchone()
self.assertEqual(row[0], val)
def CheckUnsupportedSeq(self):
class Bar: pass
val = Bar()
try:
self.cur.execute("insert into test(f) values (?)", (val,))
self.fail("should have raised an InterfaceError")
except sqlite.InterfaceError:
pass
except:
self.fail("should have raised an InterfaceError")
def CheckUnsupportedDict(self):
class Bar: pass
val = Bar()
try:
self.cur.execute("insert into test(f) values (:val)", {"val": val})
self.fail("should have raised an InterfaceError")
except sqlite.InterfaceError:
pass
except:
self.fail("should have raised an InterfaceError")
def CheckBlob(self):
# default
sample = b"Guglhupf"
val = memoryview(sample)
self.cur.execute("insert into test(bin) values (?)", (val,))
self.cur.execute("select bin from test")
row = self.cur.fetchone()
self.assertEqual(row[0], sample)
def CheckNumber1(self):
self.cur.execute("insert into test(n1) values (5)")
value = self.cur.execute("select n1 from test").fetchone()[0]
# if the converter is not used, it's an int instead of a float
self.assertEqual(type(value), float)
def CheckNumber2(self):
"""Checks whether converter names are cut off at '(' characters"""
self.cur.execute("insert into test(n2) values (5)")
value = self.cur.execute("select n2 from test").fetchone()[0]
# if the converter is not used, it's an int instead of a float
self.assertEqual(type(value), float)
class ColNamesTests(unittest.TestCase):
def setUp(self):
self.con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_COLNAMES)
self.cur = self.con.cursor()
self.cur.execute("create table test(x foo)")
sqlite.converters["FOO"] = lambda x: "[%s]" % x.decode("ascii")
sqlite.converters["BAR"] = lambda x: "<%s>" % x.decode("ascii")
sqlite.converters["EXC"] = lambda x: 5/0
sqlite.converters["B1B1"] = lambda x: "MARKER"
def tearDown(self):
del sqlite.converters["FOO"]
del sqlite.converters["BAR"]
del sqlite.converters["EXC"]
del sqlite.converters["B1B1"]
self.cur.close()
self.con.close()
def CheckDeclTypeNotUsed(self):
"""
Assures that the declared type is not used when PARSE_DECLTYPES
is not set.
"""
self.cur.execute("insert into test(x) values (?)", ("xxx",))
self.cur.execute("select x from test")
val = self.cur.fetchone()[0]
self.assertEqual(val, "xxx")
def CheckNone(self):
self.cur.execute("insert into test(x) values (?)", (None,))
self.cur.execute("select x from test")
val = self.cur.fetchone()[0]
self.assertEqual(val, None)
def CheckColName(self):
self.cur.execute("insert into test(x) values (?)", ("xxx",))
self.cur.execute('select x as "x [bar]" from test')
val = self.cur.fetchone()[0]
self.assertEqual(val, "<xxx>")
# Check if the stripping of colnames works. Everything after the first
# whitespace should be stripped.
self.assertEqual(self.cur.description[0][0], "x")
def CheckCaseInConverterName(self):
self.cur.execute("select 'other' as \"x [b1b1]\"")
val = self.cur.fetchone()[0]
self.assertEqual(val, "MARKER")
def CheckCursorDescriptionNoRow(self):
"""
cursor.description should at least provide the column name(s), even if
no row returned.
"""
self.cur.execute("select * from test where 0 = 1")
self.assertEqual(self.cur.description[0][0], "x")
class ObjectAdaptationTests(unittest.TestCase):
def cast(obj):
return float(obj)
cast = staticmethod(cast)
def setUp(self):
self.con = sqlite.connect(":memory:")
try:
del sqlite.adapters[int]
except:
pass
sqlite.register_adapter(int, ObjectAdaptationTests.cast)
self.cur = self.con.cursor()
def tearDown(self):
del sqlite.adapters[(int, sqlite.PrepareProtocol)]
self.cur.close()
self.con.close()
def CheckCasterIsUsed(self):
self.cur.execute("select ?", (4,))
val = self.cur.fetchone()[0]
self.assertEqual(type(val), float)
@unittest.skipUnless(zlib, "requires zlib")
class BinaryConverterTests(unittest.TestCase):
def convert(s):
return zlib.decompress(s)
convert = staticmethod(convert)
def setUp(self):
self.con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_COLNAMES)
sqlite.register_converter("bin", BinaryConverterTests.convert)
def tearDown(self):
self.con.close()
def CheckBinaryInputForConverter(self):
testdata = b"abcdefg" * 10
result = self.con.execute('select ? as "x [bin]"', (memoryview(zlib.compress(testdata)),)).fetchone()[0]
self.assertEqual(testdata, result)
class DateTimeTests(unittest.TestCase):
def setUp(self):
self.con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES)
self.cur = self.con.cursor()
self.cur.execute("create table test(d date, ts timestamp)")
def tearDown(self):
self.cur.close()
self.con.close()
def CheckSqliteDate(self):
d = sqlite.Date(2004, 2, 14)
self.cur.execute("insert into test(d) values (?)", (d,))
self.cur.execute("select d from test")
d2 = self.cur.fetchone()[0]
self.assertEqual(d, d2)
def CheckSqliteTimestamp(self):
ts = sqlite.Timestamp(2004, 2, 14, 7, 15, 0)
self.cur.execute("insert into test(ts) values (?)", (ts,))
self.cur.execute("select ts from test")
ts2 = self.cur.fetchone()[0]
self.assertEqual(ts, ts2)
def CheckSqlTimestamp(self):
# The date functions are only available in SQLite version 3.1 or later
if sqlite.sqlite_version_info < (3, 1):
return
# SQLite's current_timestamp uses UTC time, while datetime.datetime.now() uses local time.
now = datetime.datetime.now()
self.cur.execute("insert into test(ts) values (current_timestamp)")
self.cur.execute("select ts from test")
ts = self.cur.fetchone()[0]
self.assertEqual(type(ts), datetime.datetime)
self.assertEqual(ts.year, now.year)
def CheckDateTimeSubSeconds(self):
ts = sqlite.Timestamp(2004, 2, 14, 7, 15, 0, 500000)
self.cur.execute("insert into test(ts) values (?)", (ts,))
self.cur.execute("select ts from test")
ts2 = self.cur.fetchone()[0]
self.assertEqual(ts, ts2)
def CheckDateTimeSubSecondsFloatingPoint(self):
ts = sqlite.Timestamp(2004, 2, 14, 7, 15, 0, 510241)
self.cur.execute("insert into test(ts) values (?)", (ts,))
self.cur.execute("select ts from test")
ts2 = self.cur.fetchone()[0]
self.assertEqual(ts, ts2)
def suite():
sqlite_type_suite = unittest.makeSuite(SqliteTypeTests, "Check")
decltypes_type_suite = unittest.makeSuite(DeclTypesTests, "Check")
colnames_type_suite = unittest.makeSuite(ColNamesTests, "Check")
adaptation_suite = unittest.makeSuite(ObjectAdaptationTests, "Check")
bin_suite = unittest.makeSuite(BinaryConverterTests, "Check")
date_suite = unittest.makeSuite(DateTimeTests, "Check")
return unittest.TestSuite((sqlite_type_suite, decltypes_type_suite, colnames_type_suite, adaptation_suite, bin_suite, date_suite))
def test():
runner = unittest.TextTestRunner()
runner.run(suite())
if __name__ == "__main__":
test()
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