cpython/Lib/test/test_getargs2.py

import unittest
import math
import sys
from test import test_support
# Skip this test if the _testcapi module isn't available.
test_support.import_module('_testcapi')
from _testcapi import getargs_keywords
import warnings

"""
> 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, PY_SSIZE_T_MIN, PY_SSIZE_T_MAX, \
     SHRT_MIN, SHRT_MAX, FLT_MIN, FLT_MAX, DBL_MIN, DBL_MAX

DBL_MAX_EXP = sys.float_info.max_exp
INF = float('inf')
NAN = float('nan')

try:
    from _testcapi import getargs_L, getargs_K
except ImportError:
    _PY_LONG_LONG_available = False
else:
    _PY_LONG_LONG_available = True

# 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 Float:
    def __float__(self):
        return 4.25

class FloatSubclass(float):
    pass

class FloatSubclass2(float):
    def __float__(self):
        return 4.25

class BadFloat:
    def __float__(self):
        return 687

class BadFloat2:
    def __float__(self):
        return FloatSubclass(4.25)

class BadFloat3(float):
    def __float__(self):
        return FloatSubclass(4.25)


class Complex:
    def __complex__(self):
        return 4.25+0.5j

class ComplexSubclass(complex):
    pass

class ComplexSubclass2(complex):
    def __complex__(self):
        return 4.25+0.5j

class BadComplex:
    def __complex__(self):
        return 1.25

class BadComplex2:
    def __complex__(self):
        return ComplexSubclass(4.25+0.5j)

class BadComplex3(complex):
    def __complex__(self):
        return ComplexSubclass(4.25+0.5j)


class TupleSubclass(tuple):
    pass

class DictSubclass(dict):
    pass

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.assertRaises(TypeError, getargs_b, 3.14)
        self.assertEqual(99, getargs_b(Long()))
        self.assertEqual(99, getargs_b(Int()))

        self.assertRaises(OverflowError, getargs_b, -1)
        self.assertEqual(0, getargs_b(0))
        self.assertEqual(UCHAR_MAX, getargs_b(UCHAR_MAX))
        self.assertRaises(OverflowError, getargs_b, UCHAR_MAX + 1)

        self.assertEqual(42, getargs_b(42))
        self.assertEqual(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.assertRaises(TypeError, getargs_B, 3.14)
        self.assertEqual(99, getargs_B(Long()))
        self.assertEqual(99, getargs_B(Int()))

        self.assertEqual(UCHAR_MAX, getargs_B(-1))
        self.assertEqual(UCHAR_MAX, getargs_B(-1L))
        self.assertEqual(0, getargs_B(0))
        self.assertEqual(UCHAR_MAX, getargs_B(UCHAR_MAX))
        self.assertEqual(0, getargs_B(UCHAR_MAX+1))

        self.assertEqual(42, getargs_B(42))
        self.assertEqual(42, getargs_B(42L))
        self.assertEqual(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.assertRaises(TypeError, getargs_H, 3.14)
        self.assertEqual(99, getargs_H(Long()))
        self.assertEqual(99, getargs_H(Int()))

        self.assertEqual(USHRT_MAX, getargs_H(-1))
        self.assertEqual(0, getargs_H(0))
        self.assertEqual(USHRT_MAX, getargs_H(USHRT_MAX))
        self.assertEqual(0, getargs_H(USHRT_MAX+1))

        self.assertEqual(42, getargs_H(42))
        self.assertEqual(42, getargs_H(42L))

        self.assertEqual(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.assertRaises(TypeError, getargs_I, 3.14)
        self.assertEqual(99, getargs_I(Long()))
        self.assertEqual(99, getargs_I(Int()))

        self.assertEqual(UINT_MAX, getargs_I(-1))
        self.assertEqual(0, getargs_I(0))
        self.assertEqual(UINT_MAX, getargs_I(UINT_MAX))
        self.assertEqual(0, getargs_I(UINT_MAX+1))

        self.assertEqual(42, getargs_I(42))
        self.assertEqual(42, getargs_I(42L))

        self.assertEqual(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.assertEqual(ULONG_MAX, getargs_k(-1))
        self.assertEqual(0, getargs_k(0))
        self.assertEqual(ULONG_MAX, getargs_k(ULONG_MAX))
        self.assertEqual(0, getargs_k(ULONG_MAX+1))

        self.assertEqual(42, getargs_k(42))
        self.assertEqual(42, getargs_k(42L))

        self.assertEqual(VERY_LARGE & ULONG_MAX, getargs_k(VERY_LARGE))

class Signed_TestCase(unittest.TestCase):
    def test_h(self):
        from _testcapi import getargs_h
        # h returns 'short', and does range checking (SHRT_MIN ... SHRT_MAX)
        self.assertRaises(TypeError, getargs_h, 3.14)
        self.assertEqual(99, getargs_h(Long()))
        self.assertEqual(99, getargs_h(Int()))

        self.assertRaises(OverflowError, getargs_h, SHRT_MIN-1)
        self.assertEqual(SHRT_MIN, getargs_h(SHRT_MIN))
        self.assertEqual(SHRT_MAX, getargs_h(SHRT_MAX))
        self.assertRaises(OverflowError, getargs_h, SHRT_MAX+1)

        self.assertEqual(42, getargs_h(42))
        self.assertEqual(42, getargs_h(42L))
        self.assertRaises(OverflowError, getargs_h, VERY_LARGE)

    def test_i(self):
        from _testcapi import getargs_i
        # i returns 'int', and does range checking (INT_MIN ... INT_MAX)
        self.assertRaises(TypeError, getargs_i, 3.14)
        self.assertEqual(99, getargs_i(Long()))
        self.assertEqual(99, getargs_i(Int()))

        self.assertRaises(OverflowError, getargs_i, INT_MIN-1)
        self.assertEqual(INT_MIN, getargs_i(INT_MIN))
        self.assertEqual(INT_MAX, getargs_i(INT_MAX))
        self.assertRaises(OverflowError, getargs_i, INT_MAX+1)

        self.assertEqual(42, getargs_i(42))
        self.assertEqual(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.assertRaises(TypeError, getargs_l, 3.14)
        self.assertEqual(99, getargs_l(Long()))
        self.assertEqual(99, getargs_l(Int()))

        self.assertRaises(OverflowError, getargs_l, LONG_MIN-1)
        self.assertEqual(LONG_MIN, getargs_l(LONG_MIN))
        self.assertEqual(LONG_MAX, getargs_l(LONG_MAX))
        self.assertRaises(OverflowError, getargs_l, LONG_MAX+1)

        self.assertEqual(42, getargs_l(42))
        self.assertEqual(42, getargs_l(42L))
        self.assertRaises(OverflowError, getargs_l, VERY_LARGE)

    def test_n(self):
        from _testcapi import getargs_n
        # n returns 'Py_ssize_t', and does range checking
        # (PY_SSIZE_T_MIN ... PY_SSIZE_T_MAX)
        self.assertRaises(TypeError, getargs_n, 3.14)
        self.assertEqual(99, getargs_n(Long()))
        self.assertEqual(99, getargs_n(Int()))

        self.assertRaises(OverflowError, getargs_n, PY_SSIZE_T_MIN-1)
        self.assertEqual(PY_SSIZE_T_MIN, getargs_n(PY_SSIZE_T_MIN))
        self.assertEqual(PY_SSIZE_T_MAX, getargs_n(PY_SSIZE_T_MAX))
        self.assertRaises(OverflowError, getargs_n, PY_SSIZE_T_MAX+1)

        self.assertEqual(42, getargs_n(42))
        self.assertEqual(42, getargs_n(42L))
        self.assertRaises(OverflowError, getargs_n, VERY_LARGE)


@unittest.skipUnless(_PY_LONG_LONG_available, 'PY_LONG_LONG not available')
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)
        with warnings.catch_warnings():
            warnings.filterwarnings(
                "ignore",
                category=DeprecationWarning,
                message=".*integer argument expected, got float",
                module=__name__)
            self.assertEqual(3, getargs_L(3.14))
        with warnings.catch_warnings():
            warnings.filterwarnings(
                "error",
                category=DeprecationWarning,
                message=".*integer argument expected, got float",
                module="unittest")
            self.assertRaises(DeprecationWarning, getargs_L, 3.14)

        self.assertRaises(TypeError, getargs_L, "Hello")
        self.assertEqual(99, getargs_L(Long()))
        self.assertEqual(99, getargs_L(Int()))

        self.assertRaises(OverflowError, getargs_L, LLONG_MIN-1)
        self.assertEqual(LLONG_MIN, getargs_L(LLONG_MIN))
        self.assertEqual(LLONG_MAX, getargs_L(LLONG_MAX))
        self.assertRaises(OverflowError, getargs_L, LLONG_MAX+1)

        self.assertEqual(42, getargs_L(42))
        self.assertEqual(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.assertEqual(ULLONG_MAX, getargs_K(ULLONG_MAX))
        self.assertEqual(0, getargs_K(0))
        self.assertEqual(0, getargs_K(ULLONG_MAX+1))

        self.assertEqual(42, getargs_K(42))
        self.assertEqual(42, getargs_K(42L))

        self.assertEqual(VERY_LARGE & ULLONG_MAX, getargs_K(VERY_LARGE))


class Float_TestCase(unittest.TestCase):
    def assertEqualWithSign(self, actual, expected):
        self.assertEqual(actual, expected)
        self.assertEqual(math.copysign(1, actual), math.copysign(1, expected))

    def test_f(self):
        from _testcapi import getargs_f
        self.assertEqual(getargs_f(4.25), 4.25)
        self.assertEqual(getargs_f(4), 4.0)
        self.assertRaises(TypeError, getargs_f, 4.25+0j)
        self.assertEqual(getargs_f(Float()), 4.25)
        self.assertEqual(getargs_f(FloatSubclass(7.5)), 7.5)
        self.assertEqual(getargs_f(FloatSubclass2(7.5)), 7.5)
        self.assertRaises(TypeError, getargs_f, BadFloat())
        self.assertEqual(getargs_f(BadFloat2()), 4.25)
        self.assertEqual(getargs_f(BadFloat3(7.5)), 7.5)

        for x in (FLT_MIN, -FLT_MIN, FLT_MAX, -FLT_MAX, INF, -INF):
            self.assertEqual(getargs_f(x), x)
        if FLT_MAX < DBL_MAX:
            self.assertEqual(getargs_f(DBL_MAX), INF)
            self.assertEqual(getargs_f(-DBL_MAX), -INF)
        if FLT_MIN > DBL_MIN:
            self.assertEqualWithSign(getargs_f(DBL_MIN), 0.0)
            self.assertEqualWithSign(getargs_f(-DBL_MIN), -0.0)
        self.assertEqualWithSign(getargs_f(0.0), 0.0)
        self.assertEqualWithSign(getargs_f(-0.0), -0.0)
        r = getargs_f(NAN)
        self.assertNotEqual(r, r)

    def test_d(self):
        from _testcapi import getargs_d
        self.assertEqual(getargs_d(4.25), 4.25)
        self.assertEqual(getargs_d(4), 4.0)
        self.assertRaises(TypeError, getargs_d, 4.25+0j)
        self.assertEqual(getargs_d(Float()), 4.25)
        self.assertEqual(getargs_d(FloatSubclass(7.5)), 7.5)
        self.assertEqual(getargs_d(FloatSubclass2(7.5)), 7.5)
        self.assertRaises(TypeError, getargs_d, BadFloat())
        self.assertEqual(getargs_d(BadFloat2()), 4.25)
        self.assertEqual(getargs_d(BadFloat3(7.5)), 7.5)

        for x in (DBL_MIN, -DBL_MIN, DBL_MAX, -DBL_MAX, INF, -INF):
            self.assertEqual(getargs_d(x), x)
        self.assertRaises(OverflowError, getargs_d, 1<<DBL_MAX_EXP)
        self.assertRaises(OverflowError, getargs_d, -1<<DBL_MAX_EXP)
        self.assertEqualWithSign(getargs_d(0.0), 0.0)
        self.assertEqualWithSign(getargs_d(-0.0), -0.0)
        r = getargs_d(NAN)
        self.assertNotEqual(r, r)

    def test_D(self):
        from _testcapi import getargs_D
        self.assertEqual(getargs_D(4.25+0.5j), 4.25+0.5j)
        self.assertEqual(getargs_D(4.25), 4.25+0j)
        self.assertEqual(getargs_D(4), 4.0+0j)
        self.assertEqual(getargs_D(Complex()), 4.25+0.5j)
        self.assertEqual(getargs_D(ComplexSubclass(7.5+0.25j)), 7.5+0.25j)
        self.assertEqual(getargs_D(ComplexSubclass2(7.5+0.25j)), 7.5+0.25j)
        self.assertRaises(TypeError, getargs_D, BadComplex())
        self.assertEqual(getargs_D(BadComplex2()), 4.25+0.5j)
        self.assertEqual(getargs_D(BadComplex3(7.5+0.25j)), 7.5+0.25j)

        for x in (DBL_MIN, -DBL_MIN, DBL_MAX, -DBL_MAX, INF, -INF):
            c = complex(x, 1.0)
            self.assertEqual(getargs_D(c), c)
            c = complex(1.0, x)
            self.assertEqual(getargs_D(c), c)
        self.assertEqualWithSign(getargs_D(complex(0.0, 1.0)).real, 0.0)
        self.assertEqualWithSign(getargs_D(complex(-0.0, 1.0)).real, -0.0)
        self.assertEqualWithSign(getargs_D(complex(1.0, 0.0)).imag, 0.0)
        self.assertEqualWithSign(getargs_D(complex(1.0, -0.0)).imag, -0.0)


class Tuple_TestCase(unittest.TestCase):
    def test_args(self):
        from _testcapi import get_args

        ret = get_args(1, 2)
        self.assertEqual(ret, (1, 2))
        self.assertIs(type(ret), tuple)

        ret = get_args(1, *(2, 3))
        self.assertEqual(ret, (1, 2, 3))
        self.assertIs(type(ret), tuple)

        ret = get_args(*[1, 2])
        self.assertEqual(ret, (1, 2))
        self.assertIs(type(ret), tuple)

        ret = get_args(*TupleSubclass([1, 2]))
        self.assertEqual(ret, (1, 2))
        self.assertIsInstance(ret, tuple)

        ret = get_args()
        self.assertIn(ret, ((), None))
        self.assertIn(type(ret), (tuple, type(None)))

        ret = get_args(*())
        self.assertIn(ret, ((), None))
        self.assertIn(type(ret), (tuple, type(None)))

    def test_tuple(self):
        from _testcapi import getargs_tuple

        ret = getargs_tuple(1, (2, 3))
        self.assertEqual(ret, (1,2,3))

        # make sure invalid tuple arguments are handled correctly
        class seq:
            def __len__(self):
                return 2
            def __getitem__(self, n):
                raise ValueError
        self.assertRaises(TypeError, getargs_tuple, 1, seq())

class Keywords_TestCase(unittest.TestCase):
    def test_kwargs(self):
        from _testcapi import get_kwargs

        ret = get_kwargs(a=1, b=2)
        self.assertEqual(ret, {'a': 1, 'b': 2})
        self.assertIs(type(ret), dict)

        ret = get_kwargs(a=1, **{'b': 2, 'c': 3})
        self.assertEqual(ret, {'a': 1, 'b': 2, 'c': 3})
        self.assertIs(type(ret), dict)

        ret = get_kwargs(**DictSubclass({'a': 1, 'b': 2}))
        self.assertEqual(ret, {'a': 1, 'b': 2})
        self.assertIsInstance(ret, dict)

        ret = get_kwargs()
        self.assertIn(ret, ({}, None))
        self.assertIn(type(ret), (dict, type(None)))

        ret = get_kwargs(**{})
        self.assertIn(ret, ({}, None))
        self.assertIn(type(ret), (dict, type(None)))

    def test_positional_args(self):
        # using all positional args
        self.assertEqual(
            getargs_keywords((1,2), 3, (4,(5,6)), (7,8,9), 10),
            (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
            )
    def test_mixed_args(self):
        # positional and keyword args
        self.assertEqual(
            getargs_keywords((1,2), 3, (4,(5,6)), arg4=(7,8,9), arg5=10),
            (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
            )
    def test_keyword_args(self):
        # all keywords
        self.assertEqual(
            getargs_keywords(arg1=(1,2), arg2=3, arg3=(4,(5,6)), arg4=(7,8,9), arg5=10),
            (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
            )
    def test_optional_args(self):
        # missing optional keyword args, skipping tuples
        self.assertEqual(
            getargs_keywords(arg1=(1,2), arg2=3, arg5=10),
            (1, 2, 3, -1, -1, -1, -1, -1, -1, 10)
            )
    def test_required_args(self):
        # required arg missing
        try:
            getargs_keywords(arg1=(1,2))
        except TypeError, err:
            self.assertEqual(str(err), "Required argument 'arg2' (pos 2) not found")
        else:
            self.fail('TypeError should have been raised')
    def test_too_many_args(self):
        try:
            getargs_keywords((1,2),3,(4,(5,6)),(7,8,9),10,111)
        except TypeError, err:
            self.assertEqual(str(err), "function takes at most 5 arguments (6 given)")
        else:
            self.fail('TypeError should have been raised')
    def test_invalid_keyword(self):
        # extraneous keyword arg
        try:
            getargs_keywords((1,2),3,arg5=10,arg666=666)
        except TypeError, err:
            self.assertEqual(str(err), "'arg666' is an invalid keyword argument for this function")
        else:
            self.fail('TypeError should have been raised')


class Bytes_TestCase(unittest.TestCase):
    def test_c(self):
        from _testcapi import getargs_c
        self.assertRaises(TypeError, getargs_c, 'abc')  # len > 1
        self.assertEqual(getargs_c('a'), 97)
        if test_support.have_unicode:
            self.assertRaises(TypeError, getargs_c, u's')
        self.assertRaises(TypeError, getargs_c, bytearray('a'))
        self.assertRaises(TypeError, getargs_c, memoryview('a'))
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_c, buffer('a'))
        self.assertRaises(TypeError, getargs_c, 97)
        self.assertRaises(TypeError, getargs_c, None)

    def test_w(self):
        from _testcapi import getargs_w
        self.assertRaises(TypeError, getargs_w, 'abc', 3)
        self.assertRaises(TypeError, getargs_w, u'abc', 3)
        self.assertRaises(TypeError, getargs_w, bytearray('bytes'), 3)
        self.assertRaises(TypeError, getargs_w, memoryview('bytes'), 3)
        self.assertRaises(TypeError, getargs_w,
                          memoryview(bytearray('bytes')), 3)
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_w, buffer('bytes'), 3)
            self.assertRaises(TypeError, getargs_w,
                              buffer(bytearray('bytes')), 3)
        self.assertRaises(TypeError, getargs_w, None, 0)

    def test_w_hash(self):
        from _testcapi import getargs_w_hash
        self.assertRaises(TypeError, getargs_w_hash, 'abc')
        self.assertRaises(TypeError, getargs_w_hash, u'abc')
        self.assertRaises(TypeError, getargs_w_hash, bytearray('bytes'))
        self.assertRaises(TypeError, getargs_w_hash, memoryview('bytes'))
        self.assertRaises(TypeError, getargs_w_hash,
                          memoryview(bytearray('bytes')))
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_w_hash, buffer('bytes'))
            self.assertRaises(TypeError, getargs_w_hash,
                              buffer(bytearray('bytes')))
        self.assertRaises(TypeError, getargs_w_hash, None)

    def test_w_star(self):
        # getargs_w_star() modifies first and last byte
        from _testcapi import getargs_w_star
        self.assertRaises(TypeError, getargs_w_star, 'abc')
        self.assertRaises(TypeError, getargs_w_star, u'abc')
        self.assertRaises(TypeError, getargs_w_star, memoryview('bytes'))
        buf = bytearray('bytearray')
        self.assertEqual(getargs_w_star(buf), '[ytearra]')
        self.assertEqual(buf, bytearray('[ytearra]'))
        buf = bytearray(b'memoryview')
        self.assertEqual(getargs_w_star(memoryview(buf)), '[emoryvie]')
        self.assertEqual(buf, bytearray('[emoryvie]'))
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_w_star, buffer('buffer'))
            self.assertRaises(TypeError, getargs_w_star,
                              buffer(bytearray('buffer')))
        self.assertRaises(TypeError, getargs_w_star, None)


class String_TestCase(unittest.TestCase):
    def test_s(self):
        from _testcapi import getargs_s
        self.assertEqual(getargs_s('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_s(u'abc'), 'abc')
        self.assertRaises(TypeError, getargs_s, 'nul:\0')
        self.assertRaises(TypeError, getargs_s, u'nul:\0')
        self.assertRaises(TypeError, getargs_s, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_s, memoryview('memoryview'))
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_s, buffer('buffer'))
        self.assertRaises(TypeError, getargs_s, None)

    def test_s_star(self):
        from _testcapi import getargs_s_star
        self.assertEqual(getargs_s_star('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_s_star(u'abc'), 'abc')
        self.assertEqual(getargs_s_star('nul:\0'), 'nul:\0')
        self.assertEqual(getargs_s_star(u'nul:\0'), 'nul:\0')
        self.assertEqual(getargs_s_star(bytearray('abc\xe9')), 'abc\xe9')
        self.assertEqual(getargs_s_star(memoryview('abc\xe9')), 'abc\xe9')
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_s_star(buffer('abc\xe9')), 'abc\xe9')
            self.assertEqual(getargs_s_star(buffer(u'abc\xe9')),
                             str(buffer(u'abc\xe9')))
        self.assertRaises(TypeError, getargs_s_star, None)

    def test_s_hash(self):
        from _testcapi import getargs_s_hash
        self.assertEqual(getargs_s_hash('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_s_hash(u'abc'), 'abc')
        self.assertEqual(getargs_s_hash('nul:\0'), 'nul:\0')
        self.assertEqual(getargs_s_hash(u'nul:\0'), 'nul:\0')
        self.assertRaises(TypeError, getargs_s_hash, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_s_hash, memoryview('memoryview'))
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_s_hash(buffer('abc\xe9')), 'abc\xe9')
            self.assertEqual(getargs_s_hash(buffer(u'abc\xe9')),
                             str(buffer(u'abc\xe9')))
        self.assertRaises(TypeError, getargs_s_hash, None)

    def test_t_hash(self):
        from _testcapi import getargs_t_hash
        self.assertEqual(getargs_t_hash('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_t_hash(u'abc'), 'abc')
        self.assertEqual(getargs_t_hash('nul:\0'), 'nul:\0')
        self.assertEqual(getargs_t_hash(u'nul:\0'), 'nul:\0')
        self.assertRaises(TypeError, getargs_t_hash, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_t_hash, memoryview('memoryview'))
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_t_hash(buffer('abc\xe9')), 'abc\xe9')
            self.assertEqual(getargs_t_hash(buffer(u'abc')), 'abc')
        self.assertRaises(TypeError, getargs_t_hash, None)

    def test_z(self):
        from _testcapi import getargs_z
        self.assertEqual(getargs_z('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_z(u'abc'), 'abc')
        self.assertRaises(TypeError, getargs_z, 'nul:\0')
        self.assertRaises(TypeError, getargs_z, u'nul:\0')
        self.assertRaises(TypeError, getargs_z, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_z, memoryview('memoryview'))
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_z, buffer('buffer'))
        self.assertIsNone(getargs_z(None))

    def test_z_star(self):
        from _testcapi import getargs_z_star
        self.assertEqual(getargs_z_star('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_z_star(u'abc'), 'abc')
        self.assertEqual(getargs_z_star('nul:\0'), 'nul:\0')
        self.assertEqual(getargs_z_star(u'nul:\0'), 'nul:\0')
        self.assertEqual(getargs_z_star(bytearray('abc\xe9')), 'abc\xe9')
        self.assertEqual(getargs_z_star(memoryview('abc\xe9')), 'abc\xe9')
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_z_star(buffer('abc\xe9')), 'abc\xe9')
            self.assertEqual(getargs_z_star(buffer(u'abc\xe9')),
                             str(buffer(u'abc\xe9')))
        self.assertIsNone(getargs_z_star(None))

    def test_z_hash(self):
        from _testcapi import getargs_z_hash
        self.assertEqual(getargs_z_hash('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_z_hash(u'abc'), 'abc')
        self.assertEqual(getargs_z_hash('nul:\0'), 'nul:\0')
        self.assertEqual(getargs_z_hash(u'nul:\0'), 'nul:\0')
        self.assertRaises(TypeError, getargs_z_hash, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_z_hash, memoryview('memoryview'))
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_z_hash(buffer('abc\xe9')), 'abc\xe9')
            self.assertEqual(getargs_z_hash(buffer(u'abc\xe9')),
                             str(buffer(u'abc\xe9')))
        self.assertIsNone(getargs_z_hash(None))


@test_support.requires_unicode
class Unicode_TestCase(unittest.TestCase):
    def test_es(self):
        from _testcapi import getargs_es
        self.assertEqual(getargs_es('abc'), 'abc')
        self.assertEqual(getargs_es(u'abc'), 'abc')
        self.assertEqual(getargs_es('abc', 'ascii'), 'abc')
        self.assertEqual(getargs_es(u'abc\xe9', 'latin1'), 'abc\xe9')
        self.assertRaises(UnicodeEncodeError, getargs_es, u'abc\xe9', 'ascii')
        self.assertRaises(LookupError, getargs_es, u'abc', 'spam')
        self.assertRaises(TypeError, getargs_es,
                          bytearray('bytearray'), 'latin1')
        self.assertRaises(TypeError, getargs_es,
                          memoryview('memoryview'), 'latin1')
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_es(buffer('abc'), 'ascii'), 'abc')
            self.assertEqual(getargs_es(buffer(u'abc'), 'ascii'), 'abc')
        self.assertRaises(TypeError, getargs_es, None, 'latin1')
        self.assertRaises(TypeError, getargs_es, 'nul:\0', 'latin1')
        self.assertRaises(TypeError, getargs_es, u'nul:\0', 'latin1')

    def test_et(self):
        from _testcapi import getargs_et
        self.assertEqual(getargs_et('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_et(u'abc'), 'abc')
        self.assertEqual(getargs_et('abc', 'ascii'), 'abc')
        self.assertEqual(getargs_et('abc\xe9', 'ascii'), 'abc\xe9')
        self.assertEqual(getargs_et(u'abc\xe9', 'latin1'), 'abc\xe9')
        self.assertRaises(UnicodeEncodeError, getargs_et, u'abc\xe9', 'ascii')
        self.assertRaises(LookupError, getargs_et, u'abc', 'spam')
        self.assertRaises(TypeError, getargs_et,
                          bytearray('bytearray'), 'latin1')
        self.assertRaises(TypeError, getargs_et,
                          memoryview('memoryview'), 'latin1')
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_et(buffer('abc'), 'ascii'), 'abc')
            self.assertEqual(getargs_et(buffer(u'abc'), 'ascii'), 'abc')
        self.assertRaises(TypeError, getargs_et, None, 'latin1')
        self.assertRaises(TypeError, getargs_et, 'nul:\0', 'latin1')
        self.assertRaises(TypeError, getargs_et, u'nul:\0', 'latin1')

    def test_es_hash(self):
        from _testcapi import getargs_es_hash
        self.assertEqual(getargs_es_hash('abc'), 'abc')
        self.assertEqual(getargs_es_hash(u'abc'), 'abc')
        self.assertEqual(getargs_es_hash(u'abc\xe9', 'latin1'), 'abc\xe9')
        self.assertRaises(UnicodeEncodeError, getargs_es_hash, u'abc\xe9', 'ascii')
        self.assertRaises(LookupError, getargs_es_hash, u'abc', 'spam')
        self.assertRaises(TypeError, getargs_es_hash,
                          bytearray('bytearray'), 'latin1')
        self.assertRaises(TypeError, getargs_es_hash,
                          memoryview('memoryview'), 'latin1')
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_es_hash(buffer('abc'), 'ascii'), 'abc')
            self.assertEqual(getargs_es_hash(buffer(u'abc'), 'ascii'), 'abc')
        self.assertRaises(TypeError, getargs_es_hash, None, 'latin1')
        self.assertEqual(getargs_es_hash('nul:\0', 'latin1'), 'nul:\0')
        self.assertEqual(getargs_es_hash(u'nul:\0', 'latin1'), 'nul:\0')

        buf = bytearray('x'*8)
        self.assertEqual(getargs_es_hash(u'abc\xe9', 'latin1', buf), 'abc\xe9')
        self.assertEqual(buf, bytearray('abc\xe9\x00xxx'))
        buf = bytearray('x'*5)
        self.assertEqual(getargs_es_hash(u'abc\xe9', 'latin1', buf), 'abc\xe9')
        self.assertEqual(buf, bytearray('abc\xe9\x00'))
        buf = bytearray('x'*4)
        self.assertRaises(TypeError, getargs_es_hash, u'abc\xe9', 'latin1', buf)
        self.assertEqual(buf, bytearray('x'*4))
        buf = bytearray()
        self.assertRaises(TypeError, getargs_es_hash, u'abc\xe9', 'latin1', buf)

    def test_et_hash(self):
        from _testcapi import getargs_et_hash
        self.assertEqual(getargs_et_hash('abc\xe9'), 'abc\xe9')
        self.assertEqual(getargs_et_hash(u'abc'), 'abc')
        self.assertEqual(getargs_et_hash('abc\xe9', 'ascii'), 'abc\xe9')
        self.assertEqual(getargs_et_hash(u'abc\xe9', 'latin1'), 'abc\xe9')
        self.assertRaises(UnicodeEncodeError, getargs_et_hash,
                          u'abc\xe9', 'ascii')
        self.assertRaises(LookupError, getargs_et_hash, u'abc', 'spam')
        self.assertRaises(TypeError, getargs_et_hash,
                          bytearray('bytearray'), 'latin1')
        self.assertRaises(TypeError, getargs_et_hash,
                          memoryview('memoryview'), 'latin1')
        with test_support.check_py3k_warnings():
            self.assertEqual(getargs_et_hash(buffer('abc'), 'ascii'), 'abc')
            self.assertEqual(getargs_et_hash(buffer(u'abc'), 'ascii'), 'abc')
        self.assertRaises(TypeError, getargs_et_hash, None, 'latin1')
        self.assertEqual(getargs_et_hash('nul:\0', 'latin1'), 'nul:\0')
        self.assertEqual(getargs_et_hash(u'nul:\0', 'latin1'), 'nul:\0')

        buf = bytearray('x'*8)
        self.assertEqual(getargs_et_hash(u'abc\xe9', 'latin1', buf), 'abc\xe9')
        self.assertEqual(buf, bytearray('abc\xe9\x00xxx'))
        buf = bytearray('x'*5)
        self.assertEqual(getargs_et_hash(u'abc\xe9', 'latin1', buf), 'abc\xe9')
        self.assertEqual(buf, bytearray('abc\xe9\x00'))
        buf = bytearray('x'*4)
        self.assertRaises(TypeError, getargs_et_hash, u'abc\xe9', 'latin1', buf)
        self.assertEqual(buf, bytearray('x'*4))
        buf = bytearray()
        self.assertRaises(TypeError, getargs_et_hash, u'abc\xe9', 'latin1', buf)

    def test_u(self):
        from _testcapi import getargs_u
        self.assertEqual(getargs_u(u'abc\xe9'), u'abc\xe9')
        self.assertRaises(TypeError, getargs_u, u'nul:\0')
        self.assertRaises(TypeError, getargs_u, 'bytes')
        self.assertRaises(TypeError, getargs_u, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_u, memoryview('memoryview'))
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_u, buffer('buffer'))
        self.assertRaises(TypeError, getargs_u, None)

    def test_u_hash(self):
        from _testcapi import getargs_u_hash
        self.assertEqual(getargs_u_hash(u'abc\xe9'), u'abc\xe9')
        self.assertEqual(getargs_u_hash(u'nul:\0'), u'nul:\0')
        self.assertRaises(TypeError, getargs_u_hash, 'bytes')
        self.assertRaises(TypeError, getargs_u_hash, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_u_hash, memoryview('memoryview'))
        with test_support.check_py3k_warnings():
            self.assertRaises(TypeError, getargs_u_hash, buffer('buffer'))
        self.assertRaises(TypeError, getargs_u_hash, None)


def test_main():
    tests = [Signed_TestCase, Unsigned_TestCase, LongLong_TestCase,
             Tuple_TestCase, Keywords_TestCase,
             Bytes_TestCase, String_TestCase, Unicode_TestCase]
    test_support.run_unittest(*tests)

class Object_TestCase(unittest.TestCase):
    def test_S(self):
        from _testcapi import getargs_S
        obj = 'str'
        self.assertIs(getargs_S(obj), obj)
        self.assertRaises(TypeError, getargs_S, bytearray('bytearray'))
        if test_support.have_unicode:
            self.assertRaises(TypeError, getargs_S, u'unicode')
        self.assertRaises(TypeError, getargs_S, None)
        self.assertRaises(TypeError, getargs_S, memoryview(obj))
        self.assertRaises(TypeError, getargs_S, buffer(obj))

    def test_Y(self):
        from _testcapi import getargs_Y
        obj = bytearray('bytearray')
        self.assertIs(getargs_Y(obj), obj)
        self.assertRaises(TypeError, getargs_Y, 'str')
        if test_support.have_unicode:
            self.assertRaises(TypeError, getargs_Y, u'unicode')
        self.assertRaises(TypeError, getargs_Y, None)
        self.assertRaises(TypeError, getargs_Y, memoryview(obj))
        self.assertRaises(TypeError, getargs_Y, buffer(obj))

    @test_support.requires_unicode
    def test_U(self):
        from _testcapi import getargs_U
        obj = u'unicode'
        self.assertIs(getargs_U(obj), obj)
        self.assertRaises(TypeError, getargs_U, 'str')
        self.assertRaises(TypeError, getargs_U, bytearray('bytearray'))
        self.assertRaises(TypeError, getargs_U, None)
        self.assertRaises(TypeError, getargs_U, memoryview(obj))
        self.assertRaises(TypeError, getargs_U, buffer(obj))


if __name__ == "__main__":
    test_main()