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320 lines
13 KiB
Python
320 lines
13 KiB
Python
import itertools
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import operator
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import sys
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import unittest
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import warnings
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from test.support import cpython_only, import_helper
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_testcapi = import_helper.import_module('_testcapi')
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from _testcapi import PY_SSIZE_T_MAX, PY_SSIZE_T_MIN
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try:
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from _testbuffer import ndarray
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except ImportError:
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ndarray = None
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NULL = None
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class BadDescr:
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def __get__(self, obj, objtype=None):
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raise RuntimeError
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class WithDunder:
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def _meth(self, *args):
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if self.val:
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return self.val
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if self.exc:
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raise self.exc
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@classmethod
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def with_val(cls, val):
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obj = super().__new__(cls)
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obj.val = val
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obj.exc = None
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setattr(cls, cls.methname, cls._meth)
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return obj
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@classmethod
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def with_exc(cls, exc):
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obj = super().__new__(cls)
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obj.val = None
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obj.exc = exc
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setattr(cls, cls.methname, cls._meth)
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return obj
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class HasBadAttr:
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def __new__(cls):
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obj = super().__new__(cls)
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setattr(cls, cls.methname, BadDescr())
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return obj
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class IndexLike(WithDunder):
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methname = '__index__'
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class IntLike(WithDunder):
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methname = '__int__'
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class FloatLike(WithDunder):
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methname = '__float__'
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def subclassof(base):
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return type(base.__name__ + 'Subclass', (base,), {})
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class SomeError(Exception):
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pass
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class OtherError(Exception):
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pass
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class CAPITest(unittest.TestCase):
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def test_check(self):
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# Test PyNumber_Check()
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check = _testcapi.number_check
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self.assertTrue(check(1))
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self.assertTrue(check(IndexLike.with_val(1)))
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self.assertTrue(check(IntLike.with_val(99)))
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self.assertTrue(check(0.5))
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self.assertTrue(check(FloatLike.with_val(4.25)))
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self.assertTrue(check(1+2j))
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self.assertFalse(check([]))
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self.assertFalse(check("abc"))
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self.assertFalse(check(object()))
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self.assertFalse(check(NULL))
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def test_unary_ops(self):
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methmap = {'__neg__': _testcapi.number_negative, # PyNumber_Negative()
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'__pos__': _testcapi.number_positive, # PyNumber_Positive()
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'__abs__': _testcapi.number_absolute, # PyNumber_Absolute()
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'__invert__': _testcapi.number_invert} # PyNumber_Invert()
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for name, func in methmap.items():
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# Generic object, has no tp_as_number structure
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self.assertRaises(TypeError, func, object())
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# C-API function accepts NULL
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self.assertRaises(SystemError, func, NULL)
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# Behave as corresponding unary operation
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op = getattr(operator, name)
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for x in [0, 42, -1, 3.14, 1+2j]:
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try:
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op(x)
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except TypeError:
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self.assertRaises(TypeError, func, x)
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else:
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self.assertEqual(func(x), op(x))
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def test_binary_ops(self):
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methmap = {'__add__': _testcapi.number_add, # PyNumber_Add()
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'__sub__': _testcapi.number_subtract, # PyNumber_Subtract()
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'__mul__': _testcapi.number_multiply, # PyNumber_Multiply()
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'__matmul__': _testcapi.number_matrixmultiply, # PyNumber_MatrixMultiply()
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'__floordiv__': _testcapi.number_floordivide, # PyNumber_FloorDivide()
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'__truediv__': _testcapi.number_truedivide, # PyNumber_TrueDivide()
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'__mod__': _testcapi.number_remainder, # PyNumber_Remainder()
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'__divmod__': _testcapi.number_divmod, # PyNumber_Divmod()
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'__lshift__': _testcapi.number_lshift, # PyNumber_Lshift()
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'__rshift__': _testcapi.number_rshift, # PyNumber_Rshift()
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'__and__': _testcapi.number_and, # PyNumber_And()
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'__xor__': _testcapi.number_xor, # PyNumber_Xor()
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'__or__': _testcapi.number_or, # PyNumber_Or()
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'__pow__': _testcapi.number_power, # PyNumber_Power()
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'__iadd__': _testcapi.number_inplaceadd, # PyNumber_InPlaceAdd()
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'__isub__': _testcapi.number_inplacesubtract, # PyNumber_InPlaceSubtract()
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'__imul__': _testcapi.number_inplacemultiply, # PyNumber_InPlaceMultiply()
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'__imatmul__': _testcapi.number_inplacematrixmultiply, # PyNumber_InPlaceMatrixMultiply()
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'__ifloordiv__': _testcapi.number_inplacefloordivide, # PyNumber_InPlaceFloorDivide()
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'__itruediv__': _testcapi.number_inplacetruedivide, # PyNumber_InPlaceTrueDivide()
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'__imod__': _testcapi.number_inplaceremainder, # PyNumber_InPlaceRemainder()
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'__ilshift__': _testcapi.number_inplacelshift, # PyNumber_InPlaceLshift()
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'__irshift__': _testcapi.number_inplacershift, # PyNumber_InPlaceRshift()
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'__iand__': _testcapi.number_inplaceand, # PyNumber_InPlaceAnd()
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'__ixor__': _testcapi.number_inplacexor, # PyNumber_InPlaceXor()
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'__ior__': _testcapi.number_inplaceor, # PyNumber_InPlaceOr()
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'__ipow__': _testcapi.number_inplacepower, # PyNumber_InPlacePower()
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}
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for name, func in methmap.items():
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cases = [0, 42, 3.14, -1, 123, 1+2j]
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# Generic object, has no tp_as_number structure
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for x in cases:
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self.assertRaises(TypeError, func, object(), x)
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self.assertRaises(TypeError, func, x, object())
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# Behave as corresponding binary operation
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op = getattr(operator, name, divmod)
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for x, y in itertools.combinations(cases, 2):
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try:
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op(x, y)
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except (TypeError, ValueError, ZeroDivisionError) as exc:
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self.assertRaises(exc.__class__, func, x, y)
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else:
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self.assertEqual(func(x, y), op(x, y))
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# CRASHES func(NULL, object())
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# CRASHES func(object(), NULL)
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@unittest.skipIf(ndarray is None, "needs _testbuffer")
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def test_misc_add(self):
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# PyNumber_Add(), PyNumber_InPlaceAdd()
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add = _testcapi.number_add
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inplaceadd = _testcapi.number_inplaceadd
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# test sq_concat/sq_inplace_concat slots
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a, b, r = [1, 2], [3, 4], [1, 2, 3, 4]
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self.assertEqual(add(a, b), r)
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self.assertEqual(a, [1, 2])
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self.assertRaises(TypeError, add, ndarray([1], (1,)), 2)
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a, b, r = [1, 2], [3, 4], [1, 2, 3, 4]
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self.assertEqual(inplaceadd(a, b), r)
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self.assertEqual(a, r)
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self.assertRaises(TypeError, inplaceadd, ndarray([1], (1,)), 2)
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@unittest.skipIf(ndarray is None, "needs _testbuffer")
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def test_misc_multiply(self):
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# PyNumber_Multiply(), PyNumber_InPlaceMultiply()
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multiply = _testcapi.number_multiply
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inplacemultiply = _testcapi.number_inplacemultiply
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# test sq_repeat/sq_inplace_repeat slots
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a, b, r = [1], 2, [1, 1]
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self.assertEqual(multiply(a, b), r)
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self.assertEqual((a, b), ([1], 2))
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self.assertEqual(multiply(b, a), r)
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self.assertEqual((a, b), ([1], 2))
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self.assertEqual(multiply([1], -1), [])
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self.assertRaises(TypeError, multiply, ndarray([1], (1,)), 2)
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self.assertRaises(TypeError, multiply, [1], 0.5)
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self.assertRaises(OverflowError, multiply, [1], PY_SSIZE_T_MAX + 1)
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self.assertRaises(MemoryError, multiply, [1, 2], PY_SSIZE_T_MAX//2 + 1)
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a, b, r = [1], 2, [1, 1]
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self.assertEqual(inplacemultiply(a, b), r)
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self.assertEqual((a, b), (r, 2))
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a = [1]
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self.assertEqual(inplacemultiply(b, a), r)
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self.assertEqual((a, b), ([1], 2))
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self.assertRaises(TypeError, inplacemultiply, ndarray([1], (1,)), 2)
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self.assertRaises(OverflowError, inplacemultiply, [1], PY_SSIZE_T_MAX + 1)
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self.assertRaises(MemoryError, inplacemultiply, [1, 2], PY_SSIZE_T_MAX//2 + 1)
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def test_misc_power(self):
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# PyNumber_Power()
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power = _testcapi.number_power
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class HasPow(WithDunder):
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methname = '__pow__'
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# ternary op
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self.assertEqual(power(4, 11, 5), pow(4, 11, 5))
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self.assertRaises(TypeError, power, 4, 11, 1.25)
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self.assertRaises(TypeError, power, 4, 11, HasPow.with_val(NotImplemented))
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self.assertRaises(TypeError, power, 4, 11, object())
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def test_long(self):
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# Test PyNumber_Long()
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long = _testcapi.number_long
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self.assertEqual(long(42), 42)
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self.assertEqual(long(1.25), 1)
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self.assertEqual(long("42"), 42)
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self.assertEqual(long(b"42"), 42)
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self.assertEqual(long(bytearray(b"42")), 42)
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self.assertEqual(long(memoryview(b"42")), 42)
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self.assertEqual(long(IndexLike.with_val(99)), 99)
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self.assertEqual(long(IntLike.with_val(99)), 99)
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self.assertRaises(TypeError, long, IntLike.with_val(1.0))
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with warnings.catch_warnings():
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warnings.simplefilter("error", DeprecationWarning)
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self.assertRaises(DeprecationWarning, long, IntLike.with_val(True))
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with self.assertWarns(DeprecationWarning):
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self.assertEqual(long(IntLike.with_val(True)), 1)
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self.assertRaises(RuntimeError, long, IntLike.with_exc(RuntimeError))
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self.assertRaises(TypeError, long, 1j)
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self.assertRaises(TypeError, long, object())
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self.assertRaises(SystemError, long, NULL)
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def test_float(self):
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# Test PyNumber_Float()
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float_ = _testcapi.number_float
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self.assertEqual(float_(1.25), 1.25)
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self.assertEqual(float_(123), 123.)
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self.assertEqual(float_("1.25"), 1.25)
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self.assertEqual(float_(FloatLike.with_val(4.25)), 4.25)
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self.assertEqual(float_(IndexLike.with_val(99)), 99.0)
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self.assertEqual(float_(IndexLike.with_val(-1)), -1.0)
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self.assertRaises(TypeError, float_, FloatLike.with_val(687))
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with warnings.catch_warnings():
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warnings.simplefilter("error", DeprecationWarning)
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self.assertRaises(DeprecationWarning, float_, FloatLike.with_val(subclassof(float)(4.25)))
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with self.assertWarns(DeprecationWarning):
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self.assertEqual(float_(FloatLike.with_val(subclassof(float)(4.25))), 4.25)
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self.assertRaises(RuntimeError, float_, FloatLike.with_exc(RuntimeError))
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self.assertRaises(TypeError, float_, IndexLike.with_val(1.25))
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self.assertRaises(OverflowError, float_, IndexLike.with_val(2**2000))
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self.assertRaises(TypeError, float_, 1j)
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self.assertRaises(TypeError, float_, object())
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self.assertRaises(SystemError, float_, NULL)
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def test_index(self):
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# Test PyNumber_Index()
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index = _testcapi.number_index
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self.assertEqual(index(11), 11)
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with warnings.catch_warnings():
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warnings.simplefilter("error", DeprecationWarning)
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self.assertRaises(DeprecationWarning, index, IndexLike.with_val(True))
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with self.assertWarns(DeprecationWarning):
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self.assertEqual(index(IndexLike.with_val(True)), 1)
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self.assertRaises(TypeError, index, IndexLike.with_val(1.0))
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self.assertRaises(RuntimeError, index, IndexLike.with_exc(RuntimeError))
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self.assertRaises(TypeError, index, 1.25)
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self.assertRaises(TypeError, index, "42")
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self.assertRaises(TypeError, index, object())
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self.assertRaises(SystemError, index, NULL)
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def test_tobase(self):
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# Test PyNumber_ToBase()
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tobase = _testcapi.number_tobase
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self.assertEqual(tobase(10, 2), bin(10))
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self.assertEqual(tobase(11, 8), oct(11))
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self.assertEqual(tobase(16, 10), str(16))
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self.assertEqual(tobase(13, 16), hex(13))
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self.assertRaises(SystemError, tobase, NULL, 2)
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self.assertRaises(SystemError, tobase, 2, 3)
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self.assertRaises(TypeError, tobase, 1.25, 2)
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self.assertRaises(TypeError, tobase, "42", 2)
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def test_asssizet(self):
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# Test PyNumber_AsSsize_t()
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asssizet = _testcapi.number_asssizet
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for n in [*range(-6, 7), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX]:
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self.assertEqual(asssizet(n, OverflowError), n)
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self.assertEqual(asssizet(PY_SSIZE_T_MAX+10, NULL), PY_SSIZE_T_MAX)
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self.assertEqual(asssizet(PY_SSIZE_T_MIN-10, NULL), PY_SSIZE_T_MIN)
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self.assertRaises(OverflowError, asssizet, PY_SSIZE_T_MAX + 10, OverflowError)
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self.assertRaises(RuntimeError, asssizet, PY_SSIZE_T_MAX + 10, RuntimeError)
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self.assertRaises(SystemError, asssizet, NULL, TypeError)
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if __name__ == "__main__":
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unittest.main()
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