Viewing file:  test_getargs2.py (8.15 KB) -rw-r--r--
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import unittest
from test import test_support
import sys
import warnings, re
warnings.filterwarnings("ignore",
category=DeprecationWarning,
message=".*integer argument expected, got float",
module=__name__)
warnings.filterwarnings("ignore",
category=DeprecationWarning,
message=".*integer argument expected, got float",
module="unittest")
"""
> How about the following counterproposal. This also changes some of
> the other format codes to be a little more regular.
>
> Code C type Range check
>
> b unsigned char 0..UCHAR_MAX
> h signed short SHRT_MIN..SHRT_MAX
> B unsigned char none **
> H unsigned short none **
> k * unsigned long none
> I * unsigned int 0..UINT_MAX
> i int INT_MIN..INT_MAX
> l long LONG_MIN..LONG_MAX
> K * unsigned long long none
> L long long LLONG_MIN..LLONG_MAX
> Notes:
>
> * New format codes.
>
> ** Changed from previous "range-and-a-half" to "none"; the
> range-and-a-half checking wasn't particularly useful.
Plus a C API or two, e.g. PyInt_AsLongMask() ->
unsigned long and PyInt_AsLongLongMask() -> unsigned
long long (if that exists).
"""
LARGE = 0x7FFFFFFF
VERY_LARGE = 0xFF0000121212121212121242L
from _testcapi import UCHAR_MAX, USHRT_MAX, UINT_MAX, ULONG_MAX, INT_MAX, \
INT_MIN, LONG_MIN, LONG_MAX
# fake, they are not defined in Python's header files
LLONG_MAX = 2**63-1
LLONG_MIN = -2**63
ULLONG_MAX = 2**64-1
class Long:
def __int__(self):
return 99L
class Int:
def __int__(self):
return 99
class Unsigned_TestCase(unittest.TestCase):
def test_b(self):
from _testcapi import getargs_b
# b returns 'unsigned char', and does range checking (0 ... UCHAR_MAX)
self.failUnlessEqual(3, getargs_b(3.14))
self.failUnlessEqual(99, getargs_b(Long()))
self.failUnlessEqual(99, getargs_b(Int()))
self.assertRaises(OverflowError, getargs_b, -1)
self.failUnlessEqual(0, getargs_b(0))
self.failUnlessEqual(UCHAR_MAX, getargs_b(UCHAR_MAX))
self.assertRaises(OverflowError, getargs_b, UCHAR_MAX + 1)
self.failUnlessEqual(42, getargs_b(42))
self.failUnlessEqual(42, getargs_b(42L))
self.assertRaises(OverflowError, getargs_b, VERY_LARGE)
def test_B(self):
from _testcapi import getargs_B
# B returns 'unsigned char', no range checking
self.failUnlessEqual(3, getargs_B(3.14))
self.failUnlessEqual(99, getargs_B(Long()))
self.failUnlessEqual(99, getargs_B(Int()))
self.failUnlessEqual(UCHAR_MAX, getargs_B(-1))
self.failUnlessEqual(UCHAR_MAX, getargs_B(-1L))
self.failUnlessEqual(0, getargs_B(0))
self.failUnlessEqual(UCHAR_MAX, getargs_B(UCHAR_MAX))
self.failUnlessEqual(0, getargs_B(UCHAR_MAX+1))
self.failUnlessEqual(42, getargs_B(42))
self.failUnlessEqual(42, getargs_B(42L))
self.failUnlessEqual(UCHAR_MAX & VERY_LARGE, getargs_B(VERY_LARGE))
def test_H(self):
from _testcapi import getargs_H
# H returns 'unsigned short', no range checking
self.failUnlessEqual(3, getargs_H(3.14))
self.failUnlessEqual(99, getargs_H(Long()))
self.failUnlessEqual(99, getargs_H(Int()))
self.failUnlessEqual(USHRT_MAX, getargs_H(-1))
self.failUnlessEqual(0, getargs_H(0))
self.failUnlessEqual(USHRT_MAX, getargs_H(USHRT_MAX))
self.failUnlessEqual(0, getargs_H(USHRT_MAX+1))
self.failUnlessEqual(42, getargs_H(42))
self.failUnlessEqual(42, getargs_H(42L))
self.failUnlessEqual(VERY_LARGE & USHRT_MAX, getargs_H(VERY_LARGE))
def test_I(self):
from _testcapi import getargs_I
# I returns 'unsigned int', no range checking
self.failUnlessEqual(3, getargs_I(3.14))
self.failUnlessEqual(99, getargs_I(Long()))
self.failUnlessEqual(99, getargs_I(Int()))
self.failUnlessEqual(UINT_MAX, getargs_I(-1))
self.failUnlessEqual(0, getargs_I(0))
self.failUnlessEqual(UINT_MAX, getargs_I(UINT_MAX))
self.failUnlessEqual(0, getargs_I(UINT_MAX+1))
self.failUnlessEqual(42, getargs_I(42))
self.failUnlessEqual(42, getargs_I(42L))
self.failUnlessEqual(VERY_LARGE & UINT_MAX, getargs_I(VERY_LARGE))
def test_k(self):
from _testcapi import getargs_k
# k returns 'unsigned long', no range checking
# it does not accept float, or instances with __int__
self.assertRaises(TypeError, getargs_k, 3.14)
self.assertRaises(TypeError, getargs_k, Long())
self.assertRaises(TypeError, getargs_k, Int())
self.failUnlessEqual(ULONG_MAX, getargs_k(-1))
self.failUnlessEqual(0, getargs_k(0))
self.failUnlessEqual(ULONG_MAX, getargs_k(ULONG_MAX))
self.failUnlessEqual(0, getargs_k(ULONG_MAX+1))
self.failUnlessEqual(42, getargs_k(42))
self.failUnlessEqual(42, getargs_k(42L))
self.failUnlessEqual(VERY_LARGE & ULONG_MAX, getargs_k(VERY_LARGE))
class Signed_TestCase(unittest.TestCase):
def test_i(self):
from _testcapi import getargs_i
# i returns 'int', and does range checking (INT_MIN ... INT_MAX)
self.failUnlessEqual(3, getargs_i(3.14))
self.failUnlessEqual(99, getargs_i(Long()))
self.failUnlessEqual(99, getargs_i(Int()))
self.assertRaises(OverflowError, getargs_i, INT_MIN-1)
self.failUnlessEqual(INT_MIN, getargs_i(INT_MIN))
self.failUnlessEqual(INT_MAX, getargs_i(INT_MAX))
self.assertRaises(OverflowError, getargs_i, INT_MAX+1)
self.failUnlessEqual(42, getargs_i(42))
self.failUnlessEqual(42, getargs_i(42L))
self.assertRaises(OverflowError, getargs_i, VERY_LARGE)
def test_l(self):
from _testcapi import getargs_l
# l returns 'long', and does range checking (LONG_MIN ... LONG_MAX)
self.failUnlessEqual(3, getargs_l(3.14))
self.failUnlessEqual(99, getargs_l(Long()))
self.failUnlessEqual(99, getargs_l(Int()))
self.assertRaises(OverflowError, getargs_l, LONG_MIN-1)
self.failUnlessEqual(LONG_MIN, getargs_l(LONG_MIN))
self.failUnlessEqual(LONG_MAX, getargs_l(LONG_MAX))
self.assertRaises(OverflowError, getargs_l, LONG_MAX+1)
self.failUnlessEqual(42, getargs_l(42))
self.failUnlessEqual(42, getargs_l(42L))
self.assertRaises(OverflowError, getargs_l, VERY_LARGE)
class LongLong_TestCase(unittest.TestCase):
def test_L(self):
from _testcapi import getargs_L
# L returns 'long long', and does range checking (LLONG_MIN ... LLONG_MAX)
self.failUnlessRaises(TypeError, getargs_L, "Hello")
self.failUnlessEqual(3, getargs_L(3.14))
self.failUnlessEqual(99, getargs_L(Long()))
self.failUnlessEqual(99, getargs_L(Int()))
self.assertRaises(OverflowError, getargs_L, LLONG_MIN-1)
self.failUnlessEqual(LLONG_MIN, getargs_L(LLONG_MIN))
self.failUnlessEqual(LLONG_MAX, getargs_L(LLONG_MAX))
self.assertRaises(OverflowError, getargs_L, LLONG_MAX+1)
self.failUnlessEqual(42, getargs_L(42))
self.failUnlessEqual(42, getargs_L(42L))
self.assertRaises(OverflowError, getargs_L, VERY_LARGE)
def test_K(self):
from _testcapi import getargs_K
# K return 'unsigned long long', no range checking
self.assertRaises(TypeError, getargs_K, 3.14)
self.assertRaises(TypeError, getargs_K, Long())
self.assertRaises(TypeError, getargs_K, Int())
self.failUnlessEqual(ULLONG_MAX, getargs_K(ULLONG_MAX))
self.failUnlessEqual(0, getargs_K(0))
self.failUnlessEqual(0, getargs_K(ULLONG_MAX+1))
self.failUnlessEqual(42, getargs_K(42))
self.failUnlessEqual(42, getargs_K(42L))
self.failUnlessEqual(VERY_LARGE & ULLONG_MAX, getargs_K(VERY_LARGE))
def test_main():
tests = [Signed_TestCase, Unsigned_TestCase]
try:
from _testcapi import getargs_L, getargs_K
except ImportError:
pass # PY_LONG_LONG not available
else:
tests.append(LongLong_TestCase)
test_support.run_unittest(*tests)
if __name__ == "__main__":
test_main()
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