FCL/interim/QEMU: comparison symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test

equal deleted inserted replaced

-:ffa851df0825
+:2fb8b9db1c86
+import types
+import unittest
+import warnings
+from copy import deepcopy
+from test import test_support
+class OperatorsTest(unittest.TestCase):
+def __init__(self, *args, **kwargs):
+unittest.TestCase.__init__(self, *args, **kwargs)
+self.binops = {
+'add': '+',
+'sub': '-',
+'mul': '*',
+'div': '/',
+'divmod': 'divmod',
+'pow': '**',
+'lshift': '<<',
+'rshift': '>>',
+'and': '&',
+'xor': '^',
+'or': '|',
+'cmp': 'cmp',
+'lt': '<',
+'le': '<=',
+'eq': '==',
+'ne': '!=',
+'gt': '>',
+'ge': '>=',
+}
+for name, expr in self.binops.items():
+if expr.islower():
+expr = expr + "(a, b)"
+else:
+expr = 'a %s b' % expr
+self.binops[name] = expr
+self.unops = {
+'pos': '+',
+'neg': '-',
+'abs': 'abs',
+'invert': '~',
+'int': 'int',
+'long': 'long',
+'float': 'float',
+'oct': 'oct',
+'hex': 'hex',
+}
+for name, expr in self.unops.items():
+if expr.islower():
+expr = expr + "(a)"
+else:
+expr = '%s a' % expr
+self.unops[name] = expr
+def setUp(self):
+self.original_filters = warnings.filters[:]
+warnings.filterwarnings("ignore",
+r'complex divmod\(\), // and % are deprecated$',
+DeprecationWarning, r'(<string>|%s)$' % __name__)
+def tearDown(self):
+warnings.filters = self.original_filters
+def unop_test(self, a, res, expr="len(a)", meth="__len__"):
+d = {'a': a}
+self.assertEqual(eval(expr, d), res)
+t = type(a)
+m = getattr(t, meth)
+# Find method in parent class
+while meth not in t.__dict__:
+t = t.__bases__[0]
+self.assertEqual(m, t.__dict__[meth])
+self.assertEqual(m(a), res)
+bm = getattr(a, meth)
+self.assertEqual(bm(), res)
+def binop_test(self, a, b, res, expr="a+b", meth="__add__"):
+d = {'a': a, 'b': b}
+# XXX Hack so this passes before 2.3 when -Qnew is specified.
+if meth == "__div__" and 1/2 == 0.5:
+meth = "__truediv__"
+if meth == '__divmod__': pass
+self.assertEqual(eval(expr, d), res)
+t = type(a)
+m = getattr(t, meth)
+while meth not in t.__dict__:
+t = t.__bases__[0]
+self.assertEqual(m, t.__dict__[meth])
+self.assertEqual(m(a, b), res)
+bm = getattr(a, meth)
+self.assertEqual(bm(b), res)
+def ternop_test(self, a, b, c, res, expr="a[b:c]", meth="__getslice__"):
+d = {'a': a, 'b': b, 'c': c}
+self.assertEqual(eval(expr, d), res)
+t = type(a)
+m = getattr(t, meth)
+while meth not in t.__dict__:
+t = t.__bases__[0]
+self.assertEqual(m, t.__dict__[meth])
+self.assertEqual(m(a, b, c), res)
+bm = getattr(a, meth)
+self.assertEqual(bm(b, c), res)
+def setop_test(self, a, b, res, stmt="a+=b", meth="__iadd__"):
+d = {'a': deepcopy(a), 'b': b}
+exec stmt in d
+self.assertEqual(d['a'], res)
+t = type(a)
+m = getattr(t, meth)
+while meth not in t.__dict__:
+t = t.__bases__[0]
+self.assertEqual(m, t.__dict__[meth])
+d['a'] = deepcopy(a)
+m(d['a'], b)
+self.assertEqual(d['a'], res)
+d['a'] = deepcopy(a)
+bm = getattr(d['a'], meth)
+bm(b)
+self.assertEqual(d['a'], res)
+def set2op_test(self, a, b, c, res, stmt="a[b]=c", meth="__setitem__"):
+d = {'a': deepcopy(a), 'b': b, 'c': c}
+exec stmt in d
+self.assertEqual(d['a'], res)
+t = type(a)
+m = getattr(t, meth)
+while meth not in t.__dict__:
+t = t.__bases__[0]
+self.assertEqual(m, t.__dict__[meth])
+d['a'] = deepcopy(a)
+m(d['a'], b, c)
+self.assertEqual(d['a'], res)
+d['a'] = deepcopy(a)
+bm = getattr(d['a'], meth)
+bm(b, c)
+self.assertEqual(d['a'], res)
+def set3op_test(self, a, b, c, d, res, stmt="a[b:c]=d", meth="__setslice__"):
+dictionary = {'a': deepcopy(a), 'b': b, 'c': c, 'd': d}
+exec stmt in dictionary
+self.assertEqual(dictionary['a'], res)
+t = type(a)
+while meth not in t.__dict__:
+t = t.__bases__[0]
+m = getattr(t, meth)
+self.assertEqual(m, t.__dict__[meth])
+dictionary['a'] = deepcopy(a)
+m(dictionary['a'], b, c, d)
+self.assertEqual(dictionary['a'], res)
+dictionary['a'] = deepcopy(a)
+bm = getattr(dictionary['a'], meth)
+bm(b, c, d)
+self.assertEqual(dictionary['a'], res)
+def test_lists(self):
+# Testing list operations...
+# Asserts are within individual test methods
+self.binop_test([1], [2], [1,2], "a+b", "__add__")
+self.binop_test([1,2,3], 2, 1, "b in a", "__contains__")
+self.binop_test([1,2,3], 4, 0, "b in a", "__contains__")
+self.binop_test([1,2,3], 1, 2, "a[b]", "__getitem__")
+self.ternop_test([1,2,3], 0, 2, [1,2], "a[b:c]", "__getslice__")
+self.setop_test([1], [2], [1,2], "a+=b", "__iadd__")
+self.setop_test([1,2], 3, [1,2,1,2,1,2], "a*=b", "__imul__")
+self.unop_test([1,2,3], 3, "len(a)", "__len__")
+self.binop_test([1,2], 3, [1,2,1,2,1,2], "a*b", "__mul__")
+self.binop_test([1,2], 3, [1,2,1,2,1,2], "b*a", "__rmul__")
+self.set2op_test([1,2], 1, 3, [1,3], "a[b]=c", "__setitem__")
+self.set3op_test([1,2,3,4], 1, 3, [5,6], [1,5,6,4], "a[b:c]=d",
+"__setslice__")
+def test_dicts(self):
+# Testing dict operations...
+self.binop_test({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
+self.binop_test({1:2,3:4}, 1, 1, "b in a", "__contains__")
+self.binop_test({1:2,3:4}, 2, 0, "b in a", "__contains__")
+self.binop_test({1:2,3:4}, 1, 2, "a[b]", "__getitem__")
+d = {1:2, 3:4}
+l1 = []
+for i in d.keys():
+l1.append(i)
+l = []
+for i in iter(d):
+l.append(i)
+self.assertEqual(l, l1)
+l = []
+for i in d.__iter__():
+l.append(i)
+self.assertEqual(l, l1)
+l = []
+for i in dict.__iter__(d):
+l.append(i)
+self.assertEqual(l, l1)
+d = {1:2, 3:4}
+self.unop_test(d, 2, "len(a)", "__len__")
+self.assertEqual(eval(repr(d), {}), d)
+self.assertEqual(eval(d.__repr__(), {}), d)
+self.set2op_test({1:2,3:4}, 2, 3, {1:2,2:3,3:4}, "a[b]=c",
+"__setitem__")
+# Tests for unary and binary operators
+def number_operators(self, a, b, skip=[]):
+dict = {'a': a, 'b': b}
+for name, expr in self.binops.items():
+if name not in skip:
+name = "__%s__" % name
+if hasattr(a, name):
+res = eval(expr, dict)
+self.binop_test(a, b, res, expr, name)
+for name, expr in self.unops.items():
+if name not in skip:
+name = "__%s__" % name
+if hasattr(a, name):
+res = eval(expr, dict)
+self.unop_test(a, res, expr, name)
+def test_ints(self):
+# Testing int operations...
+self.number_operators(100, 3)
+# The following crashes in Python 2.2
+self.assertEqual((1).__nonzero__(), 1)
+self.assertEqual((0).__nonzero__(), 0)
+# This returns 'NotImplemented' in Python 2.2
+class C(int):
+def __add__(self, other):
+return NotImplemented
+self.assertEqual(C(5L), 5)
+try:
+C() + ""
+except TypeError:
+pass
+else:
+self.fail("NotImplemented should have caused TypeError")
+import sys
+try:
+C(sys.maxint+1)
+except OverflowError:
+pass
+else:
+self.fail("should have raised OverflowError")
+def test_longs(self):
+# Testing long operations...
+self.number_operators(100L, 3L)
+def test_floats(self):
+# Testing float operations...
+self.number_operators(100.0, 3.0)
+def test_complexes(self):
+# Testing complex operations...
+self.number_operators(100.0j, 3.0j, skip=['lt', 'le', 'gt', 'ge',
+'int', 'long', 'float'])
+class Number(complex):
+__slots__ = ['prec']
+def __new__(cls, *args, **kwds):
+result = complex.__new__(cls, *args)
+result.prec = kwds.get('prec', 12)
+return result
+def __repr__(self):
+prec = self.prec
+if self.imag == 0.0:
+return "%.*g" % (prec, self.real)
+if self.real == 0.0:
+return "%.*gj" % (prec, self.imag)
+return "(%.*g+%.*gj)" % (prec, self.real, prec, self.imag)
+__str__ = __repr__
+a = Number(3.14, prec=6)
+self.assertEqual(repr(a), "3.14")
+self.assertEqual(a.prec, 6)
+a = Number(a, prec=2)
+self.assertEqual(repr(a), "3.1")
+self.assertEqual(a.prec, 2)
+a = Number(234.5)
+self.assertEqual(repr(a), "234.5")
+self.assertEqual(a.prec, 12)
+def test_spam_lists(self):
+# Testing spamlist operations...
+import copy, xxsubtype as spam
+def spamlist(l, memo=None):
+import xxsubtype as spam
+return spam.spamlist(l)
+# This is an ugly hack:
+copy._deepcopy_dispatch[spam.spamlist] = spamlist
+self.binop_test(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+b",
+"__add__")
+self.binop_test(spamlist([1,2,3]), 2, 1, "b in a", "__contains__")
+self.binop_test(spamlist([1,2,3]), 4, 0, "b in a", "__contains__")
+self.binop_test(spamlist([1,2,3]), 1, 2, "a[b]", "__getitem__")
+self.ternop_test(spamlist([1,2,3]), 0, 2, spamlist([1,2]), "a[b:c]",
+"__getslice__")
+self.setop_test(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+=b",
+"__iadd__")
+self.setop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*=b",
+"__imul__")
+self.unop_test(spamlist([1,2,3]), 3, "len(a)", "__len__")
+self.binop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*b",
+"__mul__")
+self.binop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "b*a",
+"__rmul__")
+self.set2op_test(spamlist([1,2]), 1, 3, spamlist([1,3]), "a[b]=c",
+"__setitem__")
+self.set3op_test(spamlist([1,2,3,4]), 1, 3, spamlist([5,6]),
+spamlist([1,5,6,4]), "a[b:c]=d", "__setslice__")
+# Test subclassing
+class C(spam.spamlist):
+def foo(self): return 1
+a = C()
+self.assertEqual(a, [])
+self.assertEqual(a.foo(), 1)
+a.append(100)
+self.assertEqual(a, [100])
+self.assertEqual(a.getstate(), 0)
+a.setstate(42)
+self.assertEqual(a.getstate(), 42)
+def test_spam_dicts(self):
+# Testing spamdict operations...
+import copy, xxsubtype as spam
+def spamdict(d, memo=None):
+import xxsubtype as spam
+sd = spam.spamdict()
+for k, v in d.items():
+sd[k] = v
+return sd
+# This is an ugly hack:
+copy._deepcopy_dispatch[spam.spamdict] = spamdict
+self.binop_test(spamdict({1:2}), spamdict({2:1}), -1, "cmp(a,b)",
+"__cmp__")
+self.binop_test(spamdict({1:2,3:4}), 1, 1, "b in a", "__contains__")
+self.binop_test(spamdict({1:2,3:4}), 2, 0, "b in a", "__contains__")
+self.binop_test(spamdict({1:2,3:4}), 1, 2, "a[b]", "__getitem__")
+d = spamdict({1:2,3:4})
+l1 = []
+for i in d.keys():
+l1.append(i)
+l = []
+for i in iter(d):
+l.append(i)
+self.assertEqual(l, l1)
+l = []
+for i in d.__iter__():
+l.append(i)
+self.assertEqual(l, l1)
+l = []
+for i in type(spamdict({})).__iter__(d):
+l.append(i)
+self.assertEqual(l, l1)
+straightd = {1:2, 3:4}
+spamd = spamdict(straightd)
+self.unop_test(spamd, 2, "len(a)", "__len__")
+self.unop_test(spamd, repr(straightd), "repr(a)", "__repr__")
+self.set2op_test(spamdict({1:2,3:4}), 2, 3, spamdict({1:2,2:3,3:4}),
+"a[b]=c", "__setitem__")
+# Test subclassing
+class C(spam.spamdict):
+def foo(self): return 1
+a = C()
+self.assertEqual(a.items(), [])
+self.assertEqual(a.foo(), 1)
+a['foo'] = 'bar'
+self.assertEqual(a.items(), [('foo', 'bar')])
+self.assertEqual(a.getstate(), 0)
+a.setstate(100)
+self.assertEqual(a.getstate(), 100)
+class ClassPropertiesAndMethods(unittest.TestCase):
+def test_python_dicts(self):
+# Testing Python subclass of dict...
+self.assert_(issubclass(dict, dict))
+self.assert_(isinstance({}, dict))
+d = dict()
+self.assertEqual(d, {})
+self.assert_(d.__class__ is dict)
+self.assert_(isinstance(d, dict))
+class C(dict):
+state = -1
+def __init__(self_local, *a, **kw):
+if a:
+self.assertEqual(len(a), 1)
+self_local.state = a[0]
+if kw:
+for k, v in kw.items():
+self_local[v] = k
+def __getitem__(self, key):
+return self.get(key, 0)
+def __setitem__(self_local, key, value):
+self.assert_(isinstance(key, type(0)))
+dict.__setitem__(self_local, key, value)
+def setstate(self, state):
+self.state = state
+def getstate(self):
+return self.state
+self.assert_(issubclass(C, dict))
+a1 = C(12)
+self.assertEqual(a1.state, 12)
+a2 = C(foo=1, bar=2)
+self.assertEqual(a2[1] == 'foo' and a2[2], 'bar')
+a = C()
+self.assertEqual(a.state, -1)
+self.assertEqual(a.getstate(), -1)
+a.setstate(0)
+self.assertEqual(a.state, 0)
+self.assertEqual(a.getstate(), 0)
+a.setstate(10)
+self.assertEqual(a.state, 10)
+self.assertEqual(a.getstate(), 10)
+self.assertEqual(a[42], 0)
+a[42] = 24
+self.assertEqual(a[42], 24)
+N = 50
+for i in range(N):
+a[i] = C()
+for j in range(N):
+a[i][j] = i*j
+for i in range(N):
+for j in range(N):
+self.assertEqual(a[i][j], i*j)
+def test_python_lists(self):
+# Testing Python subclass of list...
+class C(list):
+def __getitem__(self, i):
+return list.__getitem__(self, i) + 100
+def __getslice__(self, i, j):
+return (i, j)
+a = C()
+a.extend([0,1,2])
+self.assertEqual(a[0], 100)
+self.assertEqual(a[1], 101)
+self.assertEqual(a[2], 102)
+self.assertEqual(a[100:200], (100,200))
+def test_metaclass(self):
+# Testing __metaclass__...
+class C:
+__metaclass__ = type
+def __init__(self):
+self.__state = 0
+def getstate(self):
+return self.__state
+def setstate(self, state):
+self.__state = state
+a = C()
+self.assertEqual(a.getstate(), 0)
+a.setstate(10)
+self.assertEqual(a.getstate(), 10)
+class D:
+class __metaclass__(type):
+def myself(cls): return cls
+self.assertEqual(D.myself(), D)
+d = D()
+self.assertEqual(d.__class__, D)
+class M1(type):
+def __new__(cls, name, bases, dict):
+dict['__spam__'] = 1
+return type.__new__(cls, name, bases, dict)
+class C:
+__metaclass__ = M1
+self.assertEqual(C.__spam__, 1)
+c = C()
+self.assertEqual(c.__spam__, 1)
+class _instance(object):
+pass
+class M2(object):
+@staticmethod
+def __new__(cls, name, bases, dict):
+self = object.__new__(cls)
+self.name = name
+self.bases = bases
+self.dict = dict
+return self
+def __call__(self):
+it = _instance()
+# Early binding of methods
+for key in self.dict:
+if key.startswith("__"):
+continue
+setattr(it, key, self.dict[key].__get__(it, self))
+return it
+class C:
+__metaclass__ = M2
+def spam(self):
+return 42
+self.assertEqual(C.name, 'C')
+self.assertEqual(C.bases, ())
+self.assert_('spam' in C.dict)
+c = C()
+self.assertEqual(c.spam(), 42)
+# More metaclass examples
+class autosuper(type):
+# Automatically add __super to the class
+# This trick only works for dynamic classes
+def __new__(metaclass, name, bases, dict):
+cls = super(autosuper, metaclass).__new__(metaclass,
+name, bases, dict)
+# Name mangling for __super removes leading underscores
+while name[:1] == "_":
+name = name[1:]
+if name:
+name = "_%s__super" % name
+else:
+name = "__super"
+setattr(cls, name, super(cls))
+return cls
+class A:
+__metaclass__ = autosuper
+def meth(self):
+return "A"
+class B(A):
+def meth(self):
+return "B" + self.__super.meth()
+class C(A):
+def meth(self):
+return "C" + self.__super.meth()
+class D(C, B):
+def meth(self):
+return "D" + self.__super.meth()
+self.assertEqual(D().meth(), "DCBA")
+class E(B, C):
+def meth(self):
+return "E" + self.__super.meth()
+self.assertEqual(E().meth(), "EBCA")
+class autoproperty(type):
+# Automatically create property attributes when methods
+# named _get_x and/or _set_x are found
+def __new__(metaclass, name, bases, dict):
+hits = {}
+for key, val in dict.iteritems():
+if key.startswith("_get_"):
+key = key[5:]
+get, set = hits.get(key, (None, None))
+get = val
+hits[key] = get, set
+elif key.startswith("_set_"):
+key = key[5:]
+get, set = hits.get(key, (None, None))
+set = val
+hits[key] = get, set
+for key, (get, set) in hits.iteritems():
+dict[key] = property(get, set)
+return super(autoproperty, metaclass).__new__(metaclass,
+name, bases, dict)
+class A:
+__metaclass__ = autoproperty
+def _get_x(self):
+return -self.__x
+def _set_x(self, x):
+self.__x = -x
+a = A()
+self.assert_(not hasattr(a, "x"))
+a.x = 12
+self.assertEqual(a.x, 12)
+self.assertEqual(a._A__x, -12)
+class multimetaclass(autoproperty, autosuper):
+# Merge of multiple cooperating metaclasses
+pass
+class A:
+__metaclass__ = multimetaclass
+def _get_x(self):
+return "A"
+class B(A):
+def _get_x(self):
+return "B" + self.__super._get_x()
+class C(A):
+def _get_x(self):
+return "C" + self.__super._get_x()
+class D(C, B):
+def _get_x(self):
+return "D" + self.__super._get_x()
+self.assertEqual(D().x, "DCBA")
+# Make sure type(x) doesn't call x.__class__.__init__
+class T(type):
+counter = 0
+def __init__(self, *args):
+T.counter += 1
+class C:
+__metaclass__ = T
+self.assertEqual(T.counter, 1)
+a = C()
+self.assertEqual(type(a), C)
+self.assertEqual(T.counter, 1)
+class C(object): pass
+c = C()
+try: c()
+except TypeError: pass
+else: self.fail("calling object w/o call method should raise "
+"TypeError")
+# Testing code to find most derived baseclass
+class A(type):
+def __new__(*args, **kwargs):
+return type.__new__(*args, **kwargs)
+class B(object):
+pass
+class C(object):
+__metaclass__ = A
+# The most derived metaclass of D is A rather than type.
+class D(B, C):
+pass
+def test_module_subclasses(self):
+# Testing Python subclass of module...
+log = []
+import types, sys
+MT = type(sys)
+class MM(MT):
+def __init__(self, name):
+MT.__init__(self, name)
+def __getattribute__(self, name):
+log.append(("getattr", name))
+return MT.__getattribute__(self, name)
+def __setattr__(self, name, value):
+log.append(("setattr", name, value))
+MT.__setattr__(self, name, value)
+def __delattr__(self, name):
+log.append(("delattr", name))
+MT.__delattr__(self, name)
+a = MM("a")
+a.foo = 12
+x = a.foo
+del a.foo
+self.assertEqual(log, [("setattr", "foo", 12),
+("getattr", "foo"),
+("delattr", "foo")])
+# http://python.org/sf/1174712
+try:
+class Module(types.ModuleType, str):
+pass
+except TypeError:
+pass
+else:
+self.fail("inheriting from ModuleType and str at the same time "
+"should fail")
+def test_multiple_inheritence(self):
+# Testing multiple inheritance...
+class C(object):
+def __init__(self):
+self.__state = 0
+def getstate(self):
+return self.__state
+def setstate(self, state):
+self.__state = state
+a = C()
+self.assertEqual(a.getstate(), 0)
+a.setstate(10)
+self.assertEqual(a.getstate(), 10)
+class D(dict, C):
+def __init__(self):
+type({}).__init__(self)
+C.__init__(self)
+d = D()
+self.assertEqual(d.keys(), [])
+d["hello"] = "world"
+self.assertEqual(d.items(), [("hello", "world")])
+self.assertEqual(d["hello"], "world")
+self.assertEqual(d.getstate(), 0)
+d.setstate(10)
+self.assertEqual(d.getstate(), 10)
+self.assertEqual(D.__mro__, (D, dict, C, object))
+# SF bug #442833
+class Node(object):
+def __int__(self):
+return int(self.foo())
+def foo(self):
+return "23"
+class Frag(Node, list):
+def foo(self):
+return "42"
+self.assertEqual(Node().__int__(), 23)
+self.assertEqual(int(Node()), 23)
+self.assertEqual(Frag().__int__(), 42)
+self.assertEqual(int(Frag()), 42)
+# MI mixing classic and new-style classes.
+class A:
+x = 1
+class B(A):
+pass
+class C(A):
+x = 2
+class D(B, C):
+pass
+self.assertEqual(D.x, 1)
+# Classic MRO is preserved for a classic base class.
+class E(D, object):
+pass
+self.assertEqual(E.__mro__, (E, D, B, A, C, object))
+self.assertEqual(E.x, 1)
+# But with a mix of classic bases, their MROs are combined using
+# new-style MRO.
+class F(B, C, object):
+pass
+self.assertEqual(F.__mro__, (F, B, C, A, object))
+self.assertEqual(F.x, 2)
+# Try something else.
+class C:
+def cmethod(self):
+return "C a"
+def all_method(self):
+return "C b"
+class M1(C, object):
+def m1method(self):
+return "M1 a"
+def all_method(self):
+return "M1 b"
+self.assertEqual(M1.__mro__, (M1, C, object))
+m = M1()
+self.assertEqual(m.cmethod(), "C a")
+self.assertEqual(m.m1method(), "M1 a")
+self.assertEqual(m.all_method(), "M1 b")
+class D(C):
+def dmethod(self):
+return "D a"
+def all_method(self):
+return "D b"
+class M2(D, object):
+def m2method(self):
+return "M2 a"
+def all_method(self):
+return "M2 b"
+self.assertEqual(M2.__mro__, (M2, D, C, object))
+m = M2()
+self.assertEqual(m.cmethod(), "C a")
+self.assertEqual(m.dmethod(), "D a")
+self.assertEqual(m.m2method(), "M2 a")
+self.assertEqual(m.all_method(), "M2 b")
+class M3(M1, M2, object):
+def m3method(self):
+return "M3 a"
+def all_method(self):
+return "M3 b"
+self.assertEqual(M3.__mro__, (M3, M1, M2, D, C, object))
+m = M3()
+self.assertEqual(m.cmethod(), "C a")
+self.assertEqual(m.dmethod(), "D a")
+self.assertEqual(m.m1method(), "M1 a")
+self.assertEqual(m.m2method(), "M2 a")
+self.assertEqual(m.m3method(), "M3 a")
+self.assertEqual(m.all_method(), "M3 b")
+class Classic:
+pass
+try:
+class New(Classic):
+__metaclass__ = type
+except TypeError:
+pass
+else:
+self.fail("new class with only classic bases - shouldn't be")
+def test_diamond_inheritence(self):
+# Testing multiple inheritance special cases...
+class A(object):
+def spam(self): return "A"
+self.assertEqual(A().spam(), "A")
+class B(A):
+def boo(self): return "B"
+def spam(self): return "B"
+self.assertEqual(B().spam(), "B")
+self.assertEqual(B().boo(), "B")
+class C(A):
+def boo(self): return "C"
+self.assertEqual(C().spam(), "A")
+self.assertEqual(C().boo(), "C")
+class D(B, C): pass
+self.assertEqual(D().spam(), "B")
+self.assertEqual(D().boo(), "B")
+self.assertEqual(D.__mro__, (D, B, C, A, object))
+class E(C, B): pass
+self.assertEqual(E().spam(), "B")
+self.assertEqual(E().boo(), "C")
+self.assertEqual(E.__mro__, (E, C, B, A, object))
+# MRO order disagreement
+try:
+class F(D, E): pass
+except TypeError:
+pass
+else:
+self.fail("expected MRO order disagreement (F)")
+try:
+class G(E, D): pass
+except TypeError:
+pass
+else:
+self.fail("expected MRO order disagreement (G)")
+# see thread python-dev/2002-October/029035.html
+def test_ex5_from_c3_switch(self):
+# Testing ex5 from C3 switch discussion...
+class A(object): pass
+class B(object): pass
+class C(object): pass
+class X(A): pass
+class Y(A): pass
+class Z(X,B,Y,C): pass
+self.assertEqual(Z.__mro__, (Z, X, B, Y, A, C, object))
+# see "A Monotonic Superclass Linearization for Dylan",
+# by Kim Barrett et al. (OOPSLA 1996)
+def test_monotonicity(self):
+# Testing MRO monotonicity...
+class Boat(object): pass
+class DayBoat(Boat): pass
+class WheelBoat(Boat): pass
+class EngineLess(DayBoat): pass
+class SmallMultihull(DayBoat): pass
+class PedalWheelBoat(EngineLess,WheelBoat): pass
+class SmallCatamaran(SmallMultihull): pass
+class Pedalo(PedalWheelBoat,SmallCatamaran): pass
+self.assertEqual(PedalWheelBoat.__mro__,
+(PedalWheelBoat, EngineLess, DayBoat, WheelBoat, Boat, object))
+self.assertEqual(SmallCatamaran.__mro__,
+(SmallCatamaran, SmallMultihull, DayBoat, Boat, object))
+self.assertEqual(Pedalo.__mro__,
+(Pedalo, PedalWheelBoat, EngineLess, SmallCatamaran,
+SmallMultihull, DayBoat, WheelBoat, Boat, object))
+# see "A Monotonic Superclass Linearization for Dylan",
+# by Kim Barrett et al. (OOPSLA 1996)
+def test_consistency_with_epg(self):
+# Testing consistentcy with EPG...
+class Pane(object): pass
+class ScrollingMixin(object): pass
+class EditingMixin(object): pass
+class ScrollablePane(Pane,ScrollingMixin): pass
+class EditablePane(Pane,EditingMixin): pass
+class EditableScrollablePane(ScrollablePane,EditablePane): pass
+self.assertEqual(EditableScrollablePane.__mro__,
+(EditableScrollablePane, ScrollablePane, EditablePane, Pane,
+ScrollingMixin, EditingMixin, object))
+def test_mro_disagreement(self):
+# Testing error messages for MRO disagreement...
+mro_err_msg = """Cannot create a consistent method resolution
+order (MRO) for bases """
+def raises(exc, expected, callable, *args):
+try:
+callable(*args)
+except exc, msg:
+if not str(msg).startswith(expected):
+self.fail("Message %r, expected %r" % (str(msg), expected))
+else:
+self.fail("Expected %s" % exc)
+class A(object): pass
+class B(A): pass
+class C(object): pass
+# Test some very simple errors
+raises(TypeError, "duplicate base class A",
+type, "X", (A, A), {})
+raises(TypeError, mro_err_msg,
+type, "X", (A, B), {})
+raises(TypeError, mro_err_msg,
+type, "X", (A, C, B), {})
+# Test a slightly more complex error
+class GridLayout(object): pass
+class HorizontalGrid(GridLayout): pass
+class VerticalGrid(GridLayout): pass
+class HVGrid(HorizontalGrid, VerticalGrid): pass
+class VHGrid(VerticalGrid, HorizontalGrid): pass
+raises(TypeError, mro_err_msg,
+type, "ConfusedGrid", (HVGrid, VHGrid), {})
+def test_object_class(self):
+# Testing object class...
+a = object()
+self.assertEqual(a.__class__, object)
+self.assertEqual(type(a), object)
+b = object()
+self.assertNotEqual(a, b)
+self.assertFalse(hasattr(a, "foo"))
+try:
+a.foo = 12
+except (AttributeError, TypeError):
+pass
+else:
+self.fail("object() should not allow setting a foo attribute")
+self.assertFalse(hasattr(object(), "__dict__"))
+class Cdict(object):
+pass
+x = Cdict()
+self.assertEqual(x.__dict__, {})
+x.foo = 1
+self.assertEqual(x.foo, 1)
+self.assertEqual(x.__dict__, {'foo': 1})
+def test_slots(self):
+# Testing __slots__...
+class C0(object):
+__slots__ = []
+x = C0()
+self.assertFalse(hasattr(x, "__dict__"))
+self.assertFalse(hasattr(x, "foo"))
+class C1(object):
+__slots__ = ['a']
+x = C1()
+self.assertFalse(hasattr(x, "__dict__"))
+self.assertFalse(hasattr(x, "a"))
+x.a = 1
+self.assertEqual(x.a, 1)
+x.a = None
+self.assertEqual(x.a, None)
+del x.a
+self.assertFalse(hasattr(x, "a"))
+class C3(object):
+__slots__ = ['a', 'b', 'c']
+x = C3()
+self.assertFalse(hasattr(x, "__dict__"))
+self.assertFalse(hasattr(x, 'a'))
+self.assertFalse(hasattr(x, 'b'))
+self.assertFalse(hasattr(x, 'c'))
+x.a = 1
+x.b = 2
+x.c = 3
+self.assertEqual(x.a, 1)
+self.assertEqual(x.b, 2)
+self.assertEqual(x.c, 3)
+class C4(object):
+"""Validate name mangling"""
+__slots__ = ['__a']
+def __init__(self, value):
+self.__a = value
+def get(self):
+return self.__a
+x = C4(5)
+self.assertFalse(hasattr(x, '__dict__'))
+self.assertFalse(hasattr(x, '__a'))
+self.assertEqual(x.get(), 5)
+try:
+x.__a = 6
+except AttributeError:
+pass
+else:
+self.fail("Double underscored names not mangled")
+# Make sure slot names are proper identifiers
+try:
+class C(object):
+__slots__ = [None]
+except TypeError:
+pass
+else:
+self.fail("[None] slots not caught")
+try:
+class C(object):
+__slots__ = ["foo bar"]
+except TypeError:
+pass
+else:
+self.fail("['foo bar'] slots not caught")
+try:
+class C(object):
+__slots__ = ["foo\0bar"]
+except TypeError:
+pass
+else:
+self.fail("['foo\\0bar'] slots not caught")
+try:
+class C(object):
+__slots__ = ["1"]
+except TypeError:
+pass
+else:
+self.fail("['1'] slots not caught")
+try:
+class C(object):
+__slots__ = [""]
+except TypeError:
+pass
+else:
+self.fail("[''] slots not caught")
+class C(object):
+__slots__ = ["a", "a_b", "_a", "A0123456789Z"]
+# XXX(nnorwitz): was there supposed to be something tested
+# from the class above?
+# Test a single string is not expanded as a sequence.
+class C(object):
+__slots__ = "abc"
+c = C()
+c.abc = 5
+self.assertEqual(c.abc, 5)
+# Test unicode slot names
+try:
+unicode
+except NameError:
+pass
+else:
+# Test a single unicode string is not expanded as a sequence.
+class C(object):
+__slots__ = unicode("abc")
+c = C()
+c.abc = 5
+self.assertEqual(c.abc, 5)
+# _unicode_to_string used to modify slots in certain circumstances
+slots = (unicode("foo"), unicode("bar"))
+class C(object):
+__slots__ = slots
+x = C()
+x.foo = 5
+self.assertEqual(x.foo, 5)
+self.assertEqual(type(slots[0]), unicode)
+# this used to leak references
+try:
+class C(object):
+__slots__ = [unichr(128)]
+except (TypeError, UnicodeEncodeError):
+pass
+else:
+self.fail("[unichr(128)] slots not caught")
+# Test leaks
+class Counted(object):
+counter = 0    # counts the number of instances alive
+def __init__(self):
+Counted.counter += 1
+def __del__(self):
+Counted.counter -= 1
+class C(object):
+__slots__ = ['a', 'b', 'c']
+x = C()
+x.a = Counted()
+x.b = Counted()
+x.c = Counted()
+self.assertEqual(Counted.counter, 3)
+del x
+self.assertEqual(Counted.counter, 0)
+class D(C):
+pass
+x = D()
+x.a = Counted()
+x.z = Counted()
+self.assertEqual(Counted.counter, 2)
+del x
+self.assertEqual(Counted.counter, 0)
+class E(D):
+__slots__ = ['e']
+x = E()
+x.a = Counted()
+x.z = Counted()
+x.e = Counted()
+self.assertEqual(Counted.counter, 3)
+del x
+self.assertEqual(Counted.counter, 0)
+# Test cyclical leaks [SF bug 519621]
+class F(object):
+__slots__ = ['a', 'b']
+log = []
+s = F()
+s.a = [Counted(), s]
+self.assertEqual(Counted.counter, 1)
+s = None
+import gc
+gc.collect()
+self.assertEqual(Counted.counter, 0)
+# Test lookup leaks [SF bug 572567]
+import sys,gc
+class G(object):
+def __cmp__(self, other):
+return 0
+__hash__ = None # Silence Py3k warning
+g = G()
+orig_objects = len(gc.get_objects())
+for i in xrange(10):
+g==g
+new_objects = len(gc.get_objects())
+self.assertEqual(orig_objects, new_objects)
+class H(object):
+__slots__ = ['a', 'b']
+def __init__(self):
+self.a = 1
+self.b = 2
+def __del__(self_):
+self.assertEqual(self_.a, 1)
+self.assertEqual(self_.b, 2)
+with test_support.captured_output('stderr') as s:
+h = H()
+del h
+self.assertEqual(s.getvalue(), '')
+def test_slots_special(self):
+# Testing __dict__ and __weakref__ in __slots__...
+class D(object):
+__slots__ = ["__dict__"]
+a = D()
+self.assert_(hasattr(a, "__dict__"))
+self.assertFalse(hasattr(a, "__weakref__"))
+a.foo = 42
+self.assertEqual(a.__dict__, {"foo": 42})
+class W(object):
+__slots__ = ["__weakref__"]
+a = W()
+self.assert_(hasattr(a, "__weakref__"))
+self.assertFalse(hasattr(a, "__dict__"))
+try:
+a.foo = 42
+except AttributeError:
+pass
+else:
+self.fail("shouldn't be allowed to set a.foo")
+class C1(W, D):
+__slots__ = []
+a = C1()
+self.assert_(hasattr(a, "__dict__"))
+self.assert_(hasattr(a, "__weakref__"))
+a.foo = 42
+self.assertEqual(a.__dict__, {"foo": 42})
+class C2(D, W):
+__slots__ = []
+a = C2()
+self.assert_(hasattr(a, "__dict__"))
+self.assert_(hasattr(a, "__weakref__"))
+a.foo = 42
+self.assertEqual(a.__dict__, {"foo": 42})
+def test_slots_descriptor(self):
+# Issue2115: slot descriptors did not correctly check
+# the type of the given object
+import abc
+class MyABC:
+__metaclass__ = abc.ABCMeta
+__slots__ = "a"
+class Unrelated(object):
+pass
+MyABC.register(Unrelated)
+u = Unrelated()
+self.assert_(isinstance(u, MyABC))
+# This used to crash
+self.assertRaises(TypeError, MyABC.a.__set__, u, 3)
+def test_dynamics(self):
+# Testing class attribute propagation...
+class D(object):
+pass
+class E(D):
+pass
+class F(D):
+pass
+D.foo = 1
+self.assertEqual(D.foo, 1)
+# Test that dynamic attributes are inherited
+self.assertEqual(E.foo, 1)
+self.assertEqual(F.foo, 1)
+# Test dynamic instances
+class C(object):
+pass
+a = C()
+self.assertFalse(hasattr(a, "foobar"))
+C.foobar = 2
+self.assertEqual(a.foobar, 2)
+C.method = lambda self: 42
+self.assertEqual(a.method(), 42)
+C.__repr__ = lambda self: "C()"
+self.assertEqual(repr(a), "C()")
+C.__int__ = lambda self: 100
+self.assertEqual(int(a), 100)
+self.assertEqual(a.foobar, 2)
+self.assertFalse(hasattr(a, "spam"))
+def mygetattr(self, name):
+if name == "spam":
+return "spam"
+raise AttributeError
+C.__getattr__ = mygetattr
+self.assertEqual(a.spam, "spam")
+a.new = 12
+self.assertEqual(a.new, 12)
+def mysetattr(self, name, value):
+if name == "spam":
+raise AttributeError
+return object.__setattr__(self, name, value)
+C.__setattr__ = mysetattr
+try:
+a.spam = "not spam"
+except AttributeError:
+pass
+else:
+self.fail("expected AttributeError")
+self.assertEqual(a.spam, "spam")
+class D(C):
+pass
+d = D()
+d.foo = 1
+self.assertEqual(d.foo, 1)
+# Test handling of int*seq and seq*int
+class I(int):
+pass
+self.assertEqual("a"*I(2), "aa")
+self.assertEqual(I(2)*"a", "aa")
+self.assertEqual(2*I(3), 6)
+self.assertEqual(I(3)*2, 6)
+self.assertEqual(I(3)*I(2), 6)
+# Test handling of long*seq and seq*long
+class L(long):
+pass
+self.assertEqual("a"*L(2L), "aa")
+self.assertEqual(L(2L)*"a", "aa")
+self.assertEqual(2*L(3), 6)
+self.assertEqual(L(3)*2, 6)
+self.assertEqual(L(3)*L(2), 6)
+# Test comparison of classes with dynamic metaclasses
+class dynamicmetaclass(type):
+pass
+class someclass:
+__metaclass__ = dynamicmetaclass
+self.assertNotEqual(someclass, object)
+def test_errors(self):
+# Testing errors...
+try:
+class C(list, dict):
+pass
+except TypeError:
+pass
+else:
+self.fail("inheritance from both list and dict should be illegal")
+try:
+class C(object, None):
+pass
+except TypeError:
+pass
+else:
+self.fail("inheritance from non-type should be illegal")
+class Classic:
+pass
+try:
+class C(type(len)):
+pass
+except TypeError:
+pass
+else:
+self.fail("inheritance from CFunction should be illegal")
+try:
+class C(object):
+__slots__ = 1
+except TypeError:
+pass
+else:
+self.fail("__slots__ = 1 should be illegal")
+try:
+class C(object):
+__slots__ = [1]
+except TypeError:
+pass
+else:
+self.fail("__slots__ = [1] should be illegal")
+class M1(type):
+pass
+class M2(type):
+pass
+class A1(object):
+__metaclass__ = M1
+class A2(object):
+__metaclass__ = M2
+try:
+class B(A1, A2):
+pass
+except TypeError:
+pass
+else:
+self.fail("finding the most derived metaclass should have failed")
+def test_classmethods(self):
+# Testing class methods...
+class C(object):
+def foo(*a): return a
+goo = classmethod(foo)
+c = C()
+self.assertEqual(C.goo(1), (C, 1))
+self.assertEqual(c.goo(1), (C, 1))
+self.assertEqual(c.foo(1), (c, 1))
+class D(C):
+pass
+d = D()
+self.assertEqual(D.goo(1), (D, 1))
+self.assertEqual(d.goo(1), (D, 1))
+self.assertEqual(d.foo(1), (d, 1))
+self.assertEqual(D.foo(d, 1), (d, 1))
+# Test for a specific crash (SF bug 528132)
+def f(cls, arg): return (cls, arg)
+ff = classmethod(f)
+self.assertEqual(ff.__get__(0, int)(42), (int, 42))
+self.assertEqual(ff.__get__(0)(42), (int, 42))
+# Test super() with classmethods (SF bug 535444)
+self.assertEqual(C.goo.im_self, C)
+self.assertEqual(D.goo.im_self, D)
+self.assertEqual(super(D,D).goo.im_self, D)
+self.assertEqual(super(D,d).goo.im_self, D)
+self.assertEqual(super(D,D).goo(), (D,))
+self.assertEqual(super(D,d).goo(), (D,))
+# Verify that argument is checked for callability (SF bug 753451)
+try:
+classmethod(1).__get__(1)
+except TypeError:
+pass
+else:
+self.fail("classmethod should check for callability")
+# Verify that classmethod() doesn't allow keyword args
+try:
+classmethod(f, kw=1)
+except TypeError:
+pass
+else:
+self.fail("classmethod shouldn't accept keyword args")
+def test_classmethods_in_c(self):
+# Testing C-based class methods...
+import xxsubtype as spam
+a = (1, 2, 3)
+d = {'abc': 123}
+x, a1, d1 = spam.spamlist.classmeth(*a, **d)
+self.assertEqual(x, spam.spamlist)
+self.assertEqual(a, a1)
+self.assertEqual(d, d1)
+x, a1, d1 = spam.spamlist().classmeth(*a, **d)
+self.assertEqual(x, spam.spamlist)
+self.assertEqual(a, a1)
+self.assertEqual(d, d1)
+def test_staticmethods(self):
+# Testing static methods...
+class C(object):
+def foo(*a): return a
+goo = staticmethod(foo)
+c = C()
+self.assertEqual(C.goo(1), (1,))
+self.assertEqual(c.goo(1), (1,))
+self.assertEqual(c.foo(1), (c, 1,))
+class D(C):
+pass
+d = D()
+self.assertEqual(D.goo(1), (1,))
+self.assertEqual(d.goo(1), (1,))
+self.assertEqual(d.foo(1), (d, 1))
+self.assertEqual(D.foo(d, 1), (d, 1))
+def test_staticmethods_in_c(self):
+# Testing C-based static methods...
+import xxsubtype as spam
+a = (1, 2, 3)
+d = {"abc": 123}
+x, a1, d1 = spam.spamlist.staticmeth(*a, **d)
+self.assertEqual(x, None)
+self.assertEqual(a, a1)
+self.assertEqual(d, d1)
+x, a1, d2 = spam.spamlist().staticmeth(*a, **d)
+self.assertEqual(x, None)
+self.assertEqual(a, a1)
+self.assertEqual(d, d1)
+def test_classic(self):
+# Testing classic classes...
+class C:
+def foo(*a): return a
+goo = classmethod(foo)
+c = C()
+self.assertEqual(C.goo(1), (C, 1))
+self.assertEqual(c.goo(1), (C, 1))
+self.assertEqual(c.foo(1), (c, 1))
+class D(C):
+pass
+d = D()
+self.assertEqual(D.goo(1), (D, 1))
+self.assertEqual(d.goo(1), (D, 1))
+self.assertEqual(d.foo(1), (d, 1))
+self.assertEqual(D.foo(d, 1), (d, 1))
+class E: # *not* subclassing from C
+foo = C.foo
+self.assertEqual(E().foo, C.foo) # i.e., unbound
+self.assert_(repr(C.foo.__get__(C())).startswith("<bound method "))
+def test_compattr(self):
+# Testing computed attributes...
+class C(object):
+class computed_attribute(object):
+def __init__(self, get, set=None, delete=None):
+self.__get = get
+self.__set = set
+self.__delete = delete
+def __get__(self, obj, type=None):
+return self.__get(obj)
+def __set__(self, obj, value):
+return self.__set(obj, value)
+def __delete__(self, obj):
+return self.__delete(obj)
+def __init__(self):
+self.__x = 0
+def __get_x(self):
+x = self.__x
+self.__x = x+1
+return x
+def __set_x(self, x):
+self.__x = x
+def __delete_x(self):
+del self.__x
+x = computed_attribute(__get_x, __set_x, __delete_x)
+a = C()
+self.assertEqual(a.x, 0)
+self.assertEqual(a.x, 1)
+a.x = 10
+self.assertEqual(a.x, 10)
+self.assertEqual(a.x, 11)
+del a.x
+self.assertEqual(hasattr(a, 'x'), 0)
+def test_newslots(self):
+# Testing __new__ slot override...
+class C(list):
+def __new__(cls):
+self = list.__new__(cls)
+self.foo = 1
+return self
+def __init__(self):
+self.foo = self.foo + 2
+a = C()
+self.assertEqual(a.foo, 3)
+self.assertEqual(a.__class__, C)
+class D(C):
+pass
+b = D()
+self.assertEqual(b.foo, 3)
+self.assertEqual(b.__class__, D)
+def test_altmro(self):
+# Testing mro() and overriding it...
+class A(object):
+def f(self): return "A"
+class B(A):
+pass
+class C(A):
+def f(self): return "C"
+class D(B, C):
+pass
+self.assertEqual(D.mro(), [D, B, C, A, object])
+self.assertEqual(D.__mro__, (D, B, C, A, object))
+self.assertEqual(D().f(), "C")
+class PerverseMetaType(type):
+def mro(cls):
+L = type.mro(cls)
+L.reverse()
+return L
+class X(D,B,C,A):
+__metaclass__ = PerverseMetaType
+self.assertEqual(X.__mro__, (object, A, C, B, D, X))
+self.assertEqual(X().f(), "A")
+try:
+class X(object):
+class __metaclass__(type):
+def mro(self):
+return [self, dict, object]
+except TypeError:
+pass
+else:
+self.fail("devious mro() return not caught")
+try:
+class X(object):
+class __metaclass__(type):
+def mro(self):
+return [1]
+except TypeError:
+pass
+else:
+self.fail("non-class mro() return not caught")
+try:
+class X(object):
+class __metaclass__(type):
+def mro(self):
+return 1
+except TypeError:
+pass
+else:
+self.fail("non-sequence mro() return not caught")
+def test_overloading(self):
+# Testing operator overloading...
+class B(object):
+"Intermediate class because object doesn't have a __setattr__"
+class C(B):
+def __getattr__(self, name):
+if name == "foo":
+return ("getattr", name)
+else:
+raise AttributeError
+def __setattr__(self, name, value):
+if name == "foo":
+self.setattr = (name, value)
+else:
+return B.__setattr__(self, name, value)
+def __delattr__(self, name):
+if name == "foo":
+self.delattr = name
+else:
+return B.__delattr__(self, name)
+def __getitem__(self, key):
+return ("getitem", key)
+def __setitem__(self, key, value):
+self.setitem = (key, value)
+def __delitem__(self, key):
+self.delitem = key
+def __getslice__(self, i, j):
+return ("getslice", i, j)
+def __setslice__(self, i, j, value):
+self.setslice = (i, j, value)
+def __delslice__(self, i, j):
+self.delslice = (i, j)
+a = C()
+self.assertEqual(a.foo, ("getattr", "foo"))
+a.foo = 12
+self.assertEqual(a.setattr, ("foo", 12))
+del a.foo
+self.assertEqual(a.delattr, "foo")
+self.assertEqual(a[12], ("getitem", 12))
+a[12] = 21
+self.assertEqual(a.setitem, (12, 21))
+del a[12]
+self.assertEqual(a.delitem, 12)
+self.assertEqual(a[0:10], ("getslice", 0, 10))
+a[0:10] = "foo"
+self.assertEqual(a.setslice, (0, 10, "foo"))
+del a[0:10]
+self.assertEqual(a.delslice, (0, 10))
+def test_methods(self):
+# Testing methods...
+class C(object):
+def __init__(self, x):
+self.x = x
+def foo(self):
+return self.x
+c1 = C(1)
+self.assertEqual(c1.foo(), 1)
+class D(C):
+boo = C.foo
+goo = c1.foo
+d2 = D(2)
+self.assertEqual(d2.foo(), 2)
+self.assertEqual(d2.boo(), 2)
+self.assertEqual(d2.goo(), 1)
+class E(object):
+foo = C.foo
+self.assertEqual(E().foo, C.foo) # i.e., unbound
+self.assert_(repr(C.foo.__get__(C(1))).startswith("<bound method "))
+def test_specials(self):
+# Testing special operators...
+# Test operators like __hash__ for which a built-in default exists
+# Test the default behavior for static classes
+class C(object):
+def __getitem__(self, i):
+if 0 <= i < 10: return i
+raise IndexError
+c1 = C()
+c2 = C()
+self.assert_(not not c1) # What?
+self.assertNotEqual(id(c1), id(c2))
+hash(c1)
+hash(c2)
+self.assertEqual(cmp(c1, c2), cmp(id(c1), id(c2)))
+self.assertEqual(c1, c1)
+self.assert_(c1 != c2)
+self.assert_(not c1 != c1)
+self.assert_(not c1 == c2)
+# Note that the module name appears in str/repr, and that varies
+# depending on whether this test is run standalone or from a framework.
+self.assert_(str(c1).find('C object at ') >= 0)
+self.assertEqual(str(c1), repr(c1))
+self.assert_(-1 not in c1)
+for i in range(10):
+self.assert_(i in c1)
+self.assertFalse(10 in c1)
+# Test the default behavior for dynamic classes
+class D(object):
+def __getitem__(self, i):
+if 0 <= i < 10: return i
+raise IndexError
+d1 = D()
+d2 = D()
+self.assert_(not not d1)
+self.assertNotEqual(id(d1), id(d2))
+hash(d1)
+hash(d2)
+self.assertEqual(cmp(d1, d2), cmp(id(d1), id(d2)))
+self.assertEqual(d1, d1)
+self.assertNotEqual(d1, d2)
+self.assert_(not d1 != d1)
+self.assert_(not d1 == d2)
+# Note that the module name appears in str/repr, and that varies
+# depending on whether this test is run standalone or from a framework.
+self.assert_(str(d1).find('D object at ') >= 0)
+self.assertEqual(str(d1), repr(d1))
+self.assert_(-1 not in d1)
+for i in range(10):
+self.assert_(i in d1)
+self.assertFalse(10 in d1)
+# Test overridden behavior for static classes
+class Proxy(object):
+def __init__(self, x):
+self.x = x
+def __nonzero__(self):
+return not not self.x
+def __hash__(self):
+return hash(self.x)
+def __eq__(self, other):
+return self.x == other
+def __ne__(self, other):
+return self.x != other
+def __cmp__(self, other):
+return cmp(self.x, other.x)
+def __str__(self):
+return "Proxy:%s" % self.x
+def __repr__(self):
+return "Proxy(%r)" % self.x
+def __contains__(self, value):
+return value in self.x
+p0 = Proxy(0)
+p1 = Proxy(1)
+p_1 = Proxy(-1)
+self.assertFalse(p0)
+self.assert_(not not p1)
+self.assertEqual(hash(p0), hash(0))
+self.assertEqual(p0, p0)
+self.assertNotEqual(p0, p1)
+self.assert_(not p0 != p0)
+self.assertEqual(not p0, p1)
+self.assertEqual(cmp(p0, p1), -1)
+self.assertEqual(cmp(p0, p0), 0)
+self.assertEqual(cmp(p0, p_1), 1)
+self.assertEqual(str(p0), "Proxy:0")
+self.assertEqual(repr(p0), "Proxy(0)")
+p10 = Proxy(range(10))
+self.assertFalse(-1 in p10)
+for i in range(10):
+self.assert_(i in p10)
+self.assertFalse(10 in p10)
+# Test overridden behavior for dynamic classes
+class DProxy(object):
+def __init__(self, x):
+self.x = x
+def __nonzero__(self):
+return not not self.x
+def __hash__(self):
+return hash(self.x)
+def __eq__(self, other):
+return self.x == other
+def __ne__(self, other):
+return self.x != other
+def __cmp__(self, other):
+return cmp(self.x, other.x)
+def __str__(self):
+return "DProxy:%s" % self.x
+def __repr__(self):
+return "DProxy(%r)" % self.x
+def __contains__(self, value):
+return value in self.x
+p0 = DProxy(0)
+p1 = DProxy(1)
+p_1 = DProxy(-1)
+self.assertFalse(p0)
+self.assert_(not not p1)
+self.assertEqual(hash(p0), hash(0))
+self.assertEqual(p0, p0)
+self.assertNotEqual(p0, p1)
+self.assertNotEqual(not p0, p0)
+self.assertEqual(not p0, p1)
+self.assertEqual(cmp(p0, p1), -1)
+self.assertEqual(cmp(p0, p0), 0)
+self.assertEqual(cmp(p0, p_1), 1)
+self.assertEqual(str(p0), "DProxy:0")
+self.assertEqual(repr(p0), "DProxy(0)")
+p10 = DProxy(range(10))
+self.assertFalse(-1 in p10)
+for i in range(10):
+self.assert_(i in p10)
+self.assertFalse(10 in p10)
+# Safety test for __cmp__
+def unsafecmp(a, b):
+try:
+a.__class__.__cmp__(a, b)
+except TypeError:
+pass
+else:
+self.fail("shouldn't allow %s.__cmp__(%r, %r)" % (
+a.__class__, a, b))
+unsafecmp(u"123", "123")
+unsafecmp("123", u"123")
+unsafecmp(1, 1.0)
+unsafecmp(1.0, 1)
+unsafecmp(1, 1L)
+unsafecmp(1L, 1)
+def test_recursions(self):
+# Testing recursion checks ...
+class Letter(str):
+def __new__(cls, letter):
+if letter == 'EPS':
+return str.__new__(cls)
+return str.__new__(cls, letter)
+def __str__(self):
+if not self:
+return 'EPS'
+return self
+# sys.stdout needs to be the original to trigger the recursion bug
+import sys
+test_stdout = sys.stdout
+sys.stdout = test_support.get_original_stdout()
+try:
+# nothing should actually be printed, this should raise an exception
+print Letter('w')
+except RuntimeError:
+pass
+else:
+self.fail("expected a RuntimeError for print recursion")
+finally:
+sys.stdout = test_stdout
+# Bug #1202533.
+class A(object):
+pass
+A.__mul__ = types.MethodType(lambda self, x: self * x, None, A)
+try:
+A()*2
+except RuntimeError:
+pass
+else:
+self.fail("expected a RuntimeError")
+def test_weakrefs(self):
+# Testing weak references...
+import weakref
+class C(object):
+pass
+c = C()
+r = weakref.ref(c)
+self.assertEqual(r(), c)
+del c
+self.assertEqual(r(), None)
+del r
+class NoWeak(object):
+__slots__ = ['foo']
+no = NoWeak()
+try:
+weakref.ref(no)
+except TypeError, msg:
+self.assert_(str(msg).find("weak reference") >= 0)
+else:
+self.fail("weakref.ref(no) should be illegal")
+class Weak(object):
+__slots__ = ['foo', '__weakref__']
+yes = Weak()
+r = weakref.ref(yes)
+self.assertEqual(r(), yes)
+del yes
+self.assertEqual(r(), None)
+del r
+def test_properties(self):
+# Testing property...
+class C(object):
+def getx(self):
+return self.__x
+def setx(self, value):
+self.__x = value
+def delx(self):
+del self.__x
+x = property(getx, setx, delx, doc="I'm the x property.")
+a = C()
+self.assertFalse(hasattr(a, "x"))
+a.x = 42
+self.assertEqual(a._C__x, 42)
+self.assertEqual(a.x, 42)
+del a.x
+self.assertFalse(hasattr(a, "x"))
+self.assertFalse(hasattr(a, "_C__x"))
+C.x.__set__(a, 100)
+self.assertEqual(C.x.__get__(a), 100)
+C.x.__delete__(a)
+self.assertFalse(hasattr(a, "x"))
+raw = C.__dict__['x']
+self.assert_(isinstance(raw, property))
+attrs = dir(raw)
+self.assert_("__doc__" in attrs)
+self.assert_("fget" in attrs)
+self.assert_("fset" in attrs)
+self.assert_("fdel" in attrs)
+self.assertEqual(raw.__doc__, "I'm the x property.")
+self.assert_(raw.fget is C.__dict__['getx'])
+self.assert_(raw.fset is C.__dict__['setx'])
+self.assert_(raw.fdel is C.__dict__['delx'])
+for attr in "__doc__", "fget", "fset", "fdel":
+try:
+setattr(raw, attr, 42)
+except TypeError, msg:
+if str(msg).find('readonly') < 0:
+self.fail("when setting readonly attr %r on a property, "
+"got unexpected TypeError msg %r" % (attr, str(msg)))
+else:
+self.fail("expected TypeError from trying to set readonly %r "
+"attr on a property" % attr)
+class D(object):
+__getitem__ = property(lambda s: 1/0)
+d = D()
+try:
+for i in d:
+str(i)
+except ZeroDivisionError:
+pass
+else:
+self.fail("expected ZeroDivisionError from bad property")
+class E(object):
+def getter(self):
+"getter method"
+return 0
+def setter(self_, value):
+"setter method"
+pass
+prop = property(getter)
+self.assertEqual(prop.__doc__, "getter method")
+prop2 = property(fset=setter)
+self.assertEqual(prop2.__doc__, None)
+# this segfaulted in 2.5b2
+try:
+import _testcapi
+except ImportError:
+pass
+else:
+class X(object):
+p = property(_testcapi.test_with_docstring)
+def test_properties_plus(self):
+class C(object):
+foo = property(doc="hello")
+@foo.getter
+def foo(self):
+return self._foo
+@foo.setter
+def foo(self, value):
+self._foo = abs(value)
+@foo.deleter
+def foo(self):
+del self._foo
+c = C()
+self.assertEqual(C.foo.__doc__, "hello")
+self.assertFalse(hasattr(c, "foo"))
+c.foo = -42
+self.assert_(hasattr(c, '_foo'))
+self.assertEqual(c._foo, 42)
+self.assertEqual(c.foo, 42)
+del c.foo
+self.assertFalse(hasattr(c, '_foo'))
+self.assertFalse(hasattr(c, "foo"))
+class D(C):
+@C.foo.deleter
+def foo(self):
+try:
+del self._foo
+except AttributeError:
+pass
+d = D()
+d.foo = 24
+self.assertEqual(d.foo, 24)
+del d.foo
+del d.foo
+class E(object):
+@property
+def foo(self):
+return self._foo
+@foo.setter
+def foo(self, value):
+raise RuntimeError
+@foo.setter
+def foo(self, value):
+self._foo = abs(value)
+@foo.deleter
+def foo(self, value=None):
+del self._foo
+e = E()
+e.foo = -42
+self.assertEqual(e.foo, 42)
+del e.foo
+class F(E):
+@E.foo.deleter
+def foo(self):
+del self._foo
+@foo.setter
+def foo(self, value):
+self._foo = max(0, value)
+f = F()
+f.foo = -10
+self.assertEqual(f.foo, 0)
+del f.foo
+def test_dict_constructors(self):
+# Testing dict constructor ...
+d = dict()
+self.assertEqual(d, {})
+d = dict({})
+self.assertEqual(d, {})
+d = dict({1: 2, 'a': 'b'})
+self.assertEqual(d, {1: 2, 'a': 'b'})
+self.assertEqual(d, dict(d.items()))
+self.assertEqual(d, dict(d.iteritems()))
+d = dict({'one':1, 'two':2})
+self.assertEqual(d, dict(one=1, two=2))
+self.assertEqual(d, dict(**d))
+self.assertEqual(d, dict({"one": 1}, two=2))
+self.assertEqual(d, dict([("two", 2)], one=1))
+self.assertEqual(d, dict([("one", 100), ("two", 200)], **d))
+self.assertEqual(d, dict(**d))
+for badarg in 0, 0L, 0j, "0", [0], (0,):
+try:
+dict(badarg)
+except TypeError:
+pass
+except ValueError:
+if badarg == "0":
+# It's a sequence, and its elements are also sequences (gotta
+# love strings <wink>), but they aren't of length 2, so this
+# one seemed better as a ValueError than a TypeError.
+pass
+else:
+self.fail("no TypeError from dict(%r)" % badarg)
+else:
+self.fail("no TypeError from dict(%r)" % badarg)
+try:
+dict({}, {})
+except TypeError:
+pass
+else:
+self.fail("no TypeError from dict({}, {})")
+class Mapping:
+# Lacks a .keys() method; will be added later.
+dict = {1:2, 3:4, 'a':1j}
+try:
+dict(Mapping())
+except TypeError:
+pass
+else:
+self.fail("no TypeError from dict(incomplete mapping)")
+Mapping.keys = lambda self: self.dict.keys()
+Mapping.__getitem__ = lambda self, i: self.dict[i]
+d = dict(Mapping())
+self.assertEqual(d, Mapping.dict)
+# Init from sequence of iterable objects, each producing a 2-sequence.
+class AddressBookEntry:
+def __init__(self, first, last):
+self.first = first
+self.last = last
+def __iter__(self):
+return iter([self.first, self.last])
+d = dict([AddressBookEntry('Tim', 'Warsaw'),
+AddressBookEntry('Barry', 'Peters'),
+AddressBookEntry('Tim', 'Peters'),
+AddressBookEntry('Barry', 'Warsaw')])
+self.assertEqual(d, {'Barry': 'Warsaw', 'Tim': 'Peters'})
+d = dict(zip(range(4), range(1, 5)))
+self.assertEqual(d, dict([(i, i+1) for i in range(4)]))
+# Bad sequence lengths.
+for bad in [('tooshort',)], [('too', 'long', 'by 1')]:
+try:
+dict(bad)
+except ValueError:
+pass
+else:
+self.fail("no ValueError from dict(%r)" % bad)
+def test_dir(self):
+# Testing dir() ...
+junk = 12
+self.assertEqual(dir(), ['junk', 'self'])
+del junk
+# Just make sure these don't blow up!
+for arg in 2, 2L, 2j, 2e0, [2], "2", u"2", (2,), {2:2}, type, self.test_dir:
+dir(arg)
+# Try classic classes.
+class C:
+Cdata = 1
+def Cmethod(self): pass
+cstuff = ['Cdata', 'Cmethod', '__doc__', '__module__']
+self.assertEqual(dir(C), cstuff)
+self.assert_('im_self' in dir(C.Cmethod))
+c = C()  # c.__doc__ is an odd thing to see here; ditto c.__module__.
+self.assertEqual(dir(c), cstuff)
+c.cdata = 2
+c.cmethod = lambda self: 0
+self.assertEqual(dir(c), cstuff + ['cdata', 'cmethod'])
+self.assert_('im_self' in dir(c.Cmethod))
+class A(C):
+Adata = 1
+def Amethod(self): pass
+astuff = ['Adata', 'Amethod'] + cstuff
+self.assertEqual(dir(A), astuff)
+self.assert_('im_self' in dir(A.Amethod))
+a = A()
+self.assertEqual(dir(a), astuff)
+self.assert_('im_self' in dir(a.Amethod))
+a.adata = 42
+a.amethod = lambda self: 3
+self.assertEqual(dir(a), astuff + ['adata', 'amethod'])
+# The same, but with new-style classes.  Since these have object as a
+# base class, a lot more gets sucked in.
+def interesting(strings):
+return [s for s in strings if not s.startswith('_')]
+class C(object):
+Cdata = 1
+def Cmethod(self): pass
+cstuff = ['Cdata', 'Cmethod']
+self.assertEqual(interesting(dir(C)), cstuff)
+c = C()
+self.assertEqual(interesting(dir(c)), cstuff)
+self.assert_('im_self' in dir(C.Cmethod))
+c.cdata = 2
+c.cmethod = lambda self: 0
+self.assertEqual(interesting(dir(c)), cstuff + ['cdata', 'cmethod'])
+self.assert_('im_self' in dir(c.Cmethod))
+class A(C):
+Adata = 1
+def Amethod(self): pass
+astuff = ['Adata', 'Amethod'] + cstuff
+self.assertEqual(interesting(dir(A)), astuff)
+self.assert_('im_self' in dir(A.Amethod))
+a = A()
+self.assertEqual(interesting(dir(a)), astuff)
+a.adata = 42
+a.amethod = lambda self: 3
+self.assertEqual(interesting(dir(a)), astuff + ['adata', 'amethod'])
+self.assert_('im_self' in dir(a.Amethod))
+# Try a module subclass.
+import sys
+class M(type(sys)):
+pass
+minstance = M("m")
+minstance.b = 2
+minstance.a = 1
+names = [x for x in dir(minstance) if x not in ["__name__", "__doc__"]]
+self.assertEqual(names, ['a', 'b'])
+class M2(M):
+def getdict(self):
+return "Not a dict!"
+__dict__ = property(getdict)
+m2instance = M2("m2")
+m2instance.b = 2
+m2instance.a = 1
+self.assertEqual(m2instance.__dict__, "Not a dict!")
+try:
+dir(m2instance)
+except TypeError:
+pass
+# Two essentially featureless objects, just inheriting stuff from
+# object.
+self.assertEqual(dir(None), dir(Ellipsis))
+# Nasty test case for proxied objects
+class Wrapper(object):
+def __init__(self, obj):
+self.__obj = obj
+def __repr__(self):
+return "Wrapper(%s)" % repr(self.__obj)
+def __getitem__(self, key):
+return Wrapper(self.__obj[key])
+def __len__(self):
+return len(self.__obj)
+def __getattr__(self, name):
+return Wrapper(getattr(self.__obj, name))
+class C(object):
+def __getclass(self):
+return Wrapper(type(self))
+__class__ = property(__getclass)
+dir(C()) # This used to segfault
+def test_supers(self):
+# Testing super...
+class A(object):
+def meth(self, a):
+return "A(%r)" % a
+self.assertEqual(A().meth(1), "A(1)")
+class B(A):
+def __init__(self):
+self.__super = super(B, self)
+def meth(self, a):
+return "B(%r)" % a + self.__super.meth(a)
+self.assertEqual(B().meth(2), "B(2)A(2)")
+class C(A):
+def meth(self, a):
+return "C(%r)" % a + self.__super.meth(a)
+C._C__super = super(C)
+self.assertEqual(C().meth(3), "C(3)A(3)")
+class D(C, B):
+def meth(self, a):
+return "D(%r)" % a + super(D, self).meth(a)
+self.assertEqual(D().meth(4), "D(4)C(4)B(4)A(4)")
+# Test for subclassing super
+class mysuper(super):
+def __init__(self, *args):
+return super(mysuper, self).__init__(*args)
+class E(D):
+def meth(self, a):
+return "E(%r)" % a + mysuper(E, self).meth(a)
+self.assertEqual(E().meth(5), "E(5)D(5)C(5)B(5)A(5)")
+class F(E):
+def meth(self, a):
+s = self.__super # == mysuper(F, self)
+return "F(%r)[%s]" % (a, s.__class__.__name__) + s.meth(a)
+F._F__super = mysuper(F)
+self.assertEqual(F().meth(6), "F(6)[mysuper]E(6)D(6)C(6)B(6)A(6)")
+# Make sure certain errors are raised
+try:
+super(D, 42)
+except TypeError:
+pass
+else:
+self.fail("shouldn't allow super(D, 42)")
+try:
+super(D, C())
+except TypeError:
+pass
+else:
+self.fail("shouldn't allow super(D, C())")
+try:
+super(D).__get__(12)
+except TypeError:
+pass
+else:
+self.fail("shouldn't allow super(D).__get__(12)")
+try:
+super(D).__get__(C())
+except TypeError:
+pass
+else:
+self.fail("shouldn't allow super(D).__get__(C())")
+# Make sure data descriptors can be overridden and accessed via super
+# (new feature in Python 2.3)
+class DDbase(object):
+def getx(self): return 42
+x = property(getx)
+class DDsub(DDbase):
+def getx(self): return "hello"
+x = property(getx)
+dd = DDsub()
+self.assertEqual(dd.x, "hello")
+self.assertEqual(super(DDsub, dd).x, 42)
+# Ensure that super() lookup of descriptor from classmethod
+# works (SF ID# 743627)
+class Base(object):
+aProp = property(lambda self: "foo")
+class Sub(Base):
+@classmethod
+def test(klass):
+return super(Sub,klass).aProp
+self.assertEqual(Sub.test(), Base.aProp)
+# Verify that super() doesn't allow keyword args
+try:
+super(Base, kw=1)
+except TypeError:
+pass
+else:
+self.assertEqual("super shouldn't accept keyword args")
+def test_basic_inheritance(self):
+# Testing inheritance from basic types...
+class hexint(int):
+def __repr__(self):
+return hex(self)
+def __add__(self, other):
+return hexint(int.__add__(self, other))
+# (Note that overriding __radd__ doesn't work,
+# because the int type gets first dibs.)
+self.assertEqual(repr(hexint(7) + 9), "0x10")
+self.assertEqual(repr(hexint(1000) + 7), "0x3ef")
+a = hexint(12345)
+self.assertEqual(a, 12345)
+self.assertEqual(int(a), 12345)
+self.assert_(int(a).__class__ is int)
+self.assertEqual(hash(a), hash(12345))
+self.assert_((+a).__class__ is int)
+self.assert_((a >> 0).__class__ is int)
+self.assert_((a << 0).__class__ is int)
+self.assert_((hexint(0) << 12).__class__ is int)
+self.assert_((hexint(0) >> 12).__class__ is int)
+class octlong(long):
+__slots__ = []
+def __str__(self):
+s = oct(self)
+if s[-1] == 'L':
+s = s[:-1]
+return s
+def __add__(self, other):
+return self.__class__(super(octlong, self).__add__(other))
+__radd__ = __add__
+self.assertEqual(str(octlong(3) + 5), "010")
+# (Note that overriding __radd__ here only seems to work
+# because the example uses a short int left argument.)
+self.assertEqual(str(5 + octlong(3000)), "05675")
+a = octlong(12345)
+self.assertEqual(a, 12345L)
+self.assertEqual(long(a), 12345L)
+self.assertEqual(hash(a), hash(12345L))
+self.assert_(long(a).__class__ is long)
+self.assert_((+a).__class__ is long)
+self.assert_((-a).__class__ is long)
+self.assert_((-octlong(0)).__class__ is long)
+self.assert_((a >> 0).__class__ is long)
+self.assert_((a << 0).__class__ is long)
+self.assert_((a - 0).__class__ is long)
+self.assert_((a * 1).__class__ is long)
+self.assert_((a ** 1).__class__ is long)
+self.assert_((a // 1).__class__ is long)
+self.assert_((1 * a).__class__ is long)
+self.assert_((a | 0).__class__ is long)
+self.assert_((a ^ 0).__class__ is long)
+self.assert_((a & -1L).__class__ is long)
+self.assert_((octlong(0) << 12).__class__ is long)
+self.assert_((octlong(0) >> 12).__class__ is long)
+self.assert_(abs(octlong(0)).__class__ is long)
+# Because octlong overrides __add__, we can't check the absence of +0
+# optimizations using octlong.
+class longclone(long):
+pass
+a = longclone(1)
+self.assert_((a + 0).__class__ is long)
+self.assert_((0 + a).__class__ is long)
+# Check that negative clones don't segfault
+a = longclone(-1)
+self.assertEqual(a.__dict__, {})
+self.assertEqual(long(a), -1)  # self.assert_ PyNumber_Long() copies the sign bit
+class precfloat(float):
+__slots__ = ['prec']
+def __init__(self, value=0.0, prec=12):
+self.prec = int(prec)
+def __repr__(self):
+return "%.*g" % (self.prec, self)
+self.assertEqual(repr(precfloat(1.1)), "1.1")
+a = precfloat(12345)
+self.assertEqual(a, 12345.0)
+self.assertEqual(float(a), 12345.0)
+self.assert_(float(a).__class__ is float)
+self.assertEqual(hash(a), hash(12345.0))
+self.assert_((+a).__class__ is float)
+class madcomplex(complex):
+def __repr__(self):
+return "%.17gj%+.17g" % (self.imag, self.real)
+a = madcomplex(-3, 4)
+self.assertEqual(repr(a), "4j-3")
+base = complex(-3, 4)
+self.assertEqual(base.__class__, complex)
+self.assertEqual(a, base)
+self.assertEqual(complex(a), base)
+self.assertEqual(complex(a).__class__, complex)
+a = madcomplex(a)  # just trying another form of the constructor
+self.assertEqual(repr(a), "4j-3")
+self.assertEqual(a, base)
+self.assertEqual(complex(a), base)
+self.assertEqual(complex(a).__class__, complex)
+self.assertEqual(hash(a), hash(base))
+self.assertEqual((+a).__class__, complex)
+self.assertEqual((a + 0).__class__, complex)
+self.assertEqual(a + 0, base)
+self.assertEqual((a - 0).__class__, complex)
+self.assertEqual(a - 0, base)
+self.assertEqual((a * 1).__class__, complex)
+self.assertEqual(a * 1, base)
+self.assertEqual((a / 1).__class__, complex)
+self.assertEqual(a / 1, base)
+class madtuple(tuple):
+_rev = None
+def rev(self):
+if self._rev is not None:
+return self._rev
+L = list(self)
+L.reverse()
+self._rev = self.__class__(L)
+return self._rev
+a = madtuple((1,2,3,4,5,6,7,8,9,0))
+self.assertEqual(a, (1,2,3,4,5,6,7,8,9,0))
+self.assertEqual(a.rev(), madtuple((0,9,8,7,6,5,4,3,2,1)))
+self.assertEqual(a.rev().rev(), madtuple((1,2,3,4,5,6,7,8,9,0)))
+for i in range(512):
+t = madtuple(range(i))
+u = t.rev()
+v = u.rev()
+self.assertEqual(v, t)
+a = madtuple((1,2,3,4,5))
+self.assertEqual(tuple(a), (1,2,3,4,5))
+self.assert_(tuple(a).__class__ is tuple)
+self.assertEqual(hash(a), hash((1,2,3,4,5)))
+self.assert_(a[:].__class__ is tuple)
+self.assert_((a * 1).__class__ is tuple)
+self.assert_((a * 0).__class__ is tuple)
+self.assert_((a + ()).__class__ is tuple)
+a = madtuple(())
+self.assertEqual(tuple(a), ())
+self.assert_(tuple(a).__class__ is tuple)
+self.assert_((a + a).__class__ is tuple)
+self.assert_((a * 0).__class__ is tuple)
+self.assert_((a * 1).__class__ is tuple)
+self.assert_((a * 2).__class__ is tuple)
+self.assert_(a[:].__class__ is tuple)
+class madstring(str):
+_rev = None
+def rev(self):
+if self._rev is not None:
+return self._rev
+L = list(self)
+L.reverse()
+self._rev = self.__class__("".join(L))
+return self._rev
+s = madstring("abcdefghijklmnopqrstuvwxyz")
+self.assertEqual(s, "abcdefghijklmnopqrstuvwxyz")
+self.assertEqual(s.rev(), madstring("zyxwvutsrqponmlkjihgfedcba"))
+self.assertEqual(s.rev().rev(), madstring("abcdefghijklmnopqrstuvwxyz"))
+for i in range(256):
+s = madstring("".join(map(chr, range(i))))
+t = s.rev()
+u = t.rev()
+self.assertEqual(u, s)
+s = madstring("12345")
+self.assertEqual(str(s), "12345")
+self.assert_(str(s).__class__ is str)
+base = "\x00" * 5
+s = madstring(base)
+self.assertEqual(s, base)
+self.assertEqual(str(s), base)
+self.assert_(str(s).__class__ is str)
+self.assertEqual(hash(s), hash(base))
+self.assertEqual({s: 1}[base], 1)
+self.assertEqual({base: 1}[s], 1)
+self.assert_((s + "").__class__ is str)
+self.assertEqual(s + "", base)
+self.assert_(("" + s).__class__ is str)
+self.assertEqual("" + s, base)
+self.assert_((s * 0).__class__ is str)
+self.assertEqual(s * 0, "")
+self.assert_((s * 1).__class__ is str)
+self.assertEqual(s * 1, base)
+self.assert_((s * 2).__class__ is str)
+self.assertEqual(s * 2, base + base)
+self.assert_(s[:].__class__ is str)
+self.assertEqual(s[:], base)
+self.assert_(s[0:0].__class__ is str)
+self.assertEqual(s[0:0], "")
+self.assert_(s.strip().__class__ is str)
+self.assertEqual(s.strip(), base)
+self.assert_(s.lstrip().__class__ is str)
+self.assertEqual(s.lstrip(), base)
+self.assert_(s.rstrip().__class__ is str)
+self.assertEqual(s.rstrip(), base)
+identitytab = ''.join([chr(i) for i in range(256)])
+self.assert_(s.translate(identitytab).__class__ is str)
+self.assertEqual(s.translate(identitytab), base)
+self.assert_(s.translate(identitytab, "x").__class__ is str)
+self.assertEqual(s.translate(identitytab, "x"), base)
+self.assertEqual(s.translate(identitytab, "\x00"), "")
+self.assert_(s.replace("x", "x").__class__ is str)
+self.assertEqual(s.replace("x", "x"), base)
+self.assert_(s.ljust(len(s)).__class__ is str)
+self.assertEqual(s.ljust(len(s)), base)
+self.assert_(s.rjust(len(s)).__class__ is str)
+self.assertEqual(s.rjust(len(s)), base)
+self.assert_(s.center(len(s)).__class__ is str)
+self.assertEqual(s.center(len(s)), base)
+self.assert_(s.lower().__class__ is str)
+self.assertEqual(s.lower(), base)
+class madunicode(unicode):
+_rev = None
+def rev(self):
+if self._rev is not None:
+return self._rev
+L = list(self)
+L.reverse()
+self._rev = self.__class__(u"".join(L))
+return self._rev
+u = madunicode("ABCDEF")
+self.assertEqual(u, u"ABCDEF")
+self.assertEqual(u.rev(), madunicode(u"FEDCBA"))
+self.assertEqual(u.rev().rev(), madunicode(u"ABCDEF"))
+base = u"12345"
+u = madunicode(base)
+self.assertEqual(unicode(u), base)
+self.assert_(unicode(u).__class__ is unicode)
+self.assertEqual(hash(u), hash(base))
+self.assertEqual({u: 1}[base], 1)
+self.assertEqual({base: 1}[u], 1)
+self.assert_(u.strip().__class__ is unicode)
+self.assertEqual(u.strip(), base)
+self.assert_(u.lstrip().__class__ is unicode)
+self.assertEqual(u.lstrip(), base)
+self.assert_(u.rstrip().__class__ is unicode)
+self.assertEqual(u.rstrip(), base)
+self.assert_(u.replace(u"x", u"x").__class__ is unicode)
+self.assertEqual(u.replace(u"x", u"x"), base)
+self.assert_(u.replace(u"xy", u"xy").__class__ is unicode)
+self.assertEqual(u.replace(u"xy", u"xy"), base)
+self.assert_(u.center(len(u)).__class__ is unicode)
+self.assertEqual(u.center(len(u)), base)
+self.assert_(u.ljust(len(u)).__class__ is unicode)
+self.assertEqual(u.ljust(len(u)), base)
+self.assert_(u.rjust(len(u)).__class__ is unicode)
+self.assertEqual(u.rjust(len(u)), base)
+self.assert_(u.lower().__class__ is unicode)
+self.assertEqual(u.lower(), base)
+self.assert_(u.upper().__class__ is unicode)
+self.assertEqual(u.upper(), base)
+self.assert_(u.capitalize().__class__ is unicode)
+self.assertEqual(u.capitalize(), base)
+self.assert_(u.title().__class__ is unicode)
+self.assertEqual(u.title(), base)
+self.assert_((u + u"").__class__ is unicode)
+self.assertEqual(u + u"", base)
+self.assert_((u"" + u).__class__ is unicode)
+self.assertEqual(u"" + u, base)
+self.assert_((u * 0).__class__ is unicode)
+self.assertEqual(u * 0, u"")
+self.assert_((u * 1).__class__ is unicode)
+self.assertEqual(u * 1, base)
+self.assert_((u * 2).__class__ is unicode)
+self.assertEqual(u * 2, base + base)
+self.assert_(u[:].__class__ is unicode)
+self.assertEqual(u[:], base)
+self.assert_(u[0:0].__class__ is unicode)
+self.assertEqual(u[0:0], u"")
+class sublist(list):
+pass
+a = sublist(range(5))
+self.assertEqual(a, range(5))
+a.append("hello")
+self.assertEqual(a, range(5) + ["hello"])
+a[5] = 5
+self.assertEqual(a, range(6))
+a.extend(range(6, 20))
+self.assertEqual(a, range(20))
+a[-5:] = []
+self.assertEqual(a, range(15))
+del a[10:15]
+self.assertEqual(len(a), 10)
+self.assertEqual(a, range(10))
+self.assertEqual(list(a), range(10))
+self.assertEqual(a[0], 0)
+self.assertEqual(a[9], 9)
+self.assertEqual(a[-10], 0)
+self.assertEqual(a[-1], 9)
+self.assertEqual(a[:5], range(5))
+class CountedInput(file):
+"""Counts lines read by self.readline().
+self.lineno is the 0-based ordinal of the last line read, up to
+a maximum of one greater than the number of lines in the file.
+self.ateof is true if and only if the final "" line has been read,
+at which point self.lineno stops incrementing, and further calls
+to readline() continue to return "".
+"""
+lineno = 0
+ateof = 0
+def readline(self):
+if self.ateof:
+return ""
+s = file.readline(self)
+# Next line works too.
+# s = super(CountedInput, self).readline()
+self.lineno += 1
+if s == "":
+self.ateof = 1
+return s
+f = file(name=test_support.TESTFN, mode='w')
+lines = ['a\n', 'b\n', 'c\n']
+try:
+f.writelines(lines)
+f.close()
+f = CountedInput(test_support.TESTFN)
+for (i, expected) in zip(range(1, 5) + [4], lines + 2 * [""]):
+got = f.readline()
+self.assertEqual(expected, got)
+self.assertEqual(f.lineno, i)
+self.assertEqual(f.ateof, (i > len(lines)))
+f.close()
+finally:
+try:
+f.close()
+except:
+pass
+test_support.unlink(test_support.TESTFN)
+def test_keywords(self):
+# Testing keyword args to basic type constructors ...
+self.assertEqual(int(x=1), 1)
+self.assertEqual(float(x=2), 2.0)
+self.assertEqual(long(x=3), 3L)
+self.assertEqual(complex(imag=42, real=666), complex(666, 42))
+self.assertEqual(str(object=500), '500')
+self.assertEqual(unicode(string='abc', errors='strict'), u'abc')
+self.assertEqual(tuple(sequence=range(3)), (0, 1, 2))
+self.assertEqual(list(sequence=(0, 1, 2)), range(3))
+# note: as of Python 2.3, dict() no longer has an "items" keyword arg
+for constructor in (int, float, long, complex, str, unicode,
+tuple, list, file):
+try:
+constructor(bogus_keyword_arg=1)
+except TypeError:
+pass
+else:
+self.fail("expected TypeError from bogus keyword argument to %r"
+% constructor)
+def test_str_subclass_as_dict_key(self):
+# Testing a str subclass used as dict key ..
+class cistr(str):
+"""Sublcass of str that computes __eq__ case-insensitively.
+Also computes a hash code of the string in canonical form.
+"""
+def __init__(self, value):
+self.canonical = value.lower()
+self.hashcode = hash(self.canonical)
+def __eq__(self, other):
+if not isinstance(other, cistr):
+other = cistr(other)
+return self.canonical == other.canonical
+def __hash__(self):
+return self.hashcode
+self.assertEqual(cistr('ABC'), 'abc')
+self.assertEqual('aBc', cistr('ABC'))
+self.assertEqual(str(cistr('ABC')), 'ABC')
+d = {cistr('one'): 1, cistr('two'): 2, cistr('tHree'): 3}
+self.assertEqual(d[cistr('one')], 1)
+self.assertEqual(d[cistr('tWo')], 2)
+self.assertEqual(d[cistr('THrEE')], 3)
+self.assert_(cistr('ONe') in d)
+self.assertEqual(d.get(cistr('thrEE')), 3)
+def test_classic_comparisons(self):
+# Testing classic comparisons...
+class classic:
+pass
+for base in (classic, int, object):
+class C(base):
+def __init__(self, value):
+self.value = int(value)
+def __cmp__(self, other):
+if isinstance(other, C):
+return cmp(self.value, other.value)
+if isinstance(other, int) or isinstance(other, long):
+return cmp(self.value, other)
+return NotImplemented
+__hash__ = None # Silence Py3k warning
+c1 = C(1)
+c2 = C(2)
+c3 = C(3)
+self.assertEqual(c1, 1)
+c = {1: c1, 2: c2, 3: c3}
+for x in 1, 2, 3:
+for y in 1, 2, 3:
+self.assert_(cmp(c[x], c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
+for op in "<", "<=", "==", "!=", ">", ">=":
+self.assert_(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
+"x=%d, y=%d" % (x, y))
+self.assert_(cmp(c[x], y) == cmp(x, y), "x=%d, y=%d" % (x, y))
+self.assert_(cmp(x, c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
+def test_rich_comparisons(self):
+# Testing rich comparisons...
+class Z(complex):
+pass
+z = Z(1)
+self.assertEqual(z, 1+0j)
+self.assertEqual(1+0j, z)
+class ZZ(complex):
+def __eq__(self, other):
+try:
+return abs(self - other) <= 1e-6
+except:
+return NotImplemented
+__hash__ = None # Silence Py3k warning
+zz = ZZ(1.0000003)
+self.assertEqual(zz, 1+0j)
+self.assertEqual(1+0j, zz)
+class classic:
+pass
+for base in (classic, int, object, list):
+class C(base):
+def __init__(self, value):
+self.value = int(value)
+def __cmp__(self_, other):
+self.fail("shouldn't call __cmp__")
+__hash__ = None # Silence Py3k warning
+def __eq__(self, other):
+if isinstance(other, C):
+return self.value == other.value
+if isinstance(other, int) or isinstance(other, long):
+return self.value == other
+return NotImplemented
+def __ne__(self, other):
+if isinstance(other, C):
+return self.value != other.value
+if isinstance(other, int) or isinstance(other, long):
+return self.value != other
+return NotImplemented
+def __lt__(self, other):
+if isinstance(other, C):
+return self.value < other.value
+if isinstance(other, int) or isinstance(other, long):
+return self.value < other
+return NotImplemented
+def __le__(self, other):
+if isinstance(other, C):
+return self.value <= other.value
+if isinstance(other, int) or isinstance(other, long):
+return self.value <= other
+return NotImplemented
+def __gt__(self, other):
+if isinstance(other, C):
+return self.value > other.value
+if isinstance(other, int) or isinstance(other, long):
+return self.value > other
+return NotImplemented
+def __ge__(self, other):
+if isinstance(other, C):
+return self.value >= other.value
+if isinstance(other, int) or isinstance(other, long):
+return self.value >= other
+return NotImplemented
+c1 = C(1)
+c2 = C(2)
+c3 = C(3)
+self.assertEqual(c1, 1)
+c = {1: c1, 2: c2, 3: c3}
+for x in 1, 2, 3:
+for y in 1, 2, 3:
+for op in "<", "<=", "==", "!=", ">", ">=":
+self.assert_(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
+"x=%d, y=%d" % (x, y))
+self.assert_(eval("c[x] %s y" % op) == eval("x %s y" % op),
+"x=%d, y=%d" % (x, y))
+self.assert_(eval("x %s c[y]" % op) == eval("x %s y" % op),
+"x=%d, y=%d" % (x, y))
+def test_coercions(self):
+# Testing coercions...
+class I(int): pass
+coerce(I(0), 0)
+coerce(0, I(0))
+class L(long): pass
+coerce(L(0), 0)
+coerce(L(0), 0L)
+coerce(0, L(0))
+coerce(0L, L(0))
+class F(float): pass
+coerce(F(0), 0)
+coerce(F(0), 0L)
+coerce(F(0), 0.)
+coerce(0, F(0))
+coerce(0L, F(0))
+coerce(0., F(0))
+class C(complex): pass
+coerce(C(0), 0)
+coerce(C(0), 0L)
+coerce(C(0), 0.)
+coerce(C(0), 0j)
+coerce(0, C(0))
+coerce(0L, C(0))
+coerce(0., C(0))
+coerce(0j, C(0))
+def test_descrdoc(self):
+# Testing descriptor doc strings...
+def check(descr, what):
+self.assertEqual(descr.__doc__, what)
+check(file.closed, "True if the file is closed") # getset descriptor
+check(file.name, "file name") # member descriptor
+def test_doc_descriptor(self):
+# Testing __doc__ descriptor...
+# SF bug 542984
+class DocDescr(object):
+def __get__(self, object, otype):
+if object:
+object = object.__class__.__name__ + ' instance'
+if otype:
+otype = otype.__name__
+return 'object=%s; type=%s' % (object, otype)
+class OldClass:
+__doc__ = DocDescr()
+class NewClass(object):
+__doc__ = DocDescr()
+self.assertEqual(OldClass.__doc__, 'object=None; type=OldClass')
+self.assertEqual(OldClass().__doc__, 'object=OldClass instance; type=OldClass')
+self.assertEqual(NewClass.__doc__, 'object=None; type=NewClass')
+self.assertEqual(NewClass().__doc__, 'object=NewClass instance; type=NewClass')
+def test_set_class(self):
+# Testing __class__ assignment...
+class C(object): pass
+class D(object): pass
+class E(object): pass
+class F(D, E): pass
+for cls in C, D, E, F:
+for cls2 in C, D, E, F:
+x = cls()
+x.__class__ = cls2
+self.assert_(x.__class__ is cls2)
+x.__class__ = cls
+self.assert_(x.__class__ is cls)
+def cant(x, C):
+try:
+x.__class__ = C
+except TypeError:
+pass
+else:
+self.fail("shouldn't allow %r.__class__ = %r" % (x, C))
+try:
+delattr(x, "__class__")
+except TypeError:
+pass
+else:
+self.fail("shouldn't allow del %r.__class__" % x)
+cant(C(), list)
+cant(list(), C)
+cant(C(), 1)
+cant(C(), object)
+cant(object(), list)
+cant(list(), object)
+class Int(int): __slots__ = []
+cant(2, Int)
+cant(Int(), int)
+cant(True, int)
+cant(2, bool)
+o = object()
+cant(o, type(1))
+cant(o, type(None))
+del o
+class G(object):
+__slots__ = ["a", "b"]
+class H(object):
+__slots__ = ["b", "a"]
+try:
+unicode
+except NameError:
+class I(object):
+__slots__ = ["a", "b"]
+else:
+class I(object):
+__slots__ = [unicode("a"), unicode("b")]
+class J(object):
+__slots__ = ["c", "b"]
+class K(object):
+__slots__ = ["a", "b", "d"]
+class L(H):
+__slots__ = ["e"]
+class M(I):
+__slots__ = ["e"]
+class N(J):
+__slots__ = ["__weakref__"]
+class P(J):
+__slots__ = ["__dict__"]
+class Q(J):
+pass
+class R(J):
+__slots__ = ["__dict__", "__weakref__"]
+for cls, cls2 in ((G, H), (G, I), (I, H), (Q, R), (R, Q)):
+x = cls()
+x.a = 1
+x.__class__ = cls2
+self.assert_(x.__class__ is cls2,
+"assigning %r as __class__ for %r silently failed" % (cls2, x))
+self.assertEqual(x.a, 1)
+x.__class__ = cls
+self.assert_(x.__class__ is cls,
+"assigning %r as __class__ for %r silently failed" % (cls, x))
+self.assertEqual(x.a, 1)
+for cls in G, J, K, L, M, N, P, R, list, Int:
+for cls2 in G, J, K, L, M, N, P, R, list, Int:
+if cls is cls2:
+continue
+cant(cls(), cls2)
+def test_set_dict(self):
+# Testing __dict__ assignment...
+class C(object): pass
+a = C()
+a.__dict__ = {'b': 1}
+self.assertEqual(a.b, 1)
+def cant(x, dict):
+try:
+x.__dict__ = dict
+except (AttributeError, TypeError):
+pass
+else:
+self.fail("shouldn't allow %r.__dict__ = %r" % (x, dict))
+cant(a, None)
+cant(a, [])
+cant(a, 1)
+del a.__dict__ # Deleting __dict__ is allowed
+class Base(object):
+pass
+def verify_dict_readonly(x):
+"""
+x has to be an instance of a class inheriting from Base.
+"""
+cant(x, {})
+try:
+del x.__dict__
+except (AttributeError, TypeError):
+pass
+else:
+self.fail("shouldn't allow del %r.__dict__" % x)
+dict_descr = Base.__dict__["__dict__"]
+try:
+dict_descr.__set__(x, {})
+except (AttributeError, TypeError):
+pass
+else:
+self.fail("dict_descr allowed access to %r's dict" % x)
+# Classes don't allow __dict__ assignment and have readonly dicts
+class Meta1(type, Base):
+pass
+class Meta2(Base, type):
+pass
+class D(object):
+__metaclass__ = Meta1
+class E(object):
+__metaclass__ = Meta2
+for cls in C, D, E:
+verify_dict_readonly(cls)
+class_dict = cls.__dict__
+try:
+class_dict["spam"] = "eggs"
+except TypeError:
+pass
+else:
+self.fail("%r's __dict__ can be modified" % cls)
+# Modules also disallow __dict__ assignment
+class Module1(types.ModuleType, Base):
+pass
+class Module2(Base, types.ModuleType):
+pass
+for ModuleType in Module1, Module2:
+mod = ModuleType("spam")
+verify_dict_readonly(mod)
+mod.__dict__["spam"] = "eggs"
+# Exception's __dict__ can be replaced, but not deleted
+class Exception1(Exception, Base):
+pass
+class Exception2(Base, Exception):
+pass
+for ExceptionType in Exception, Exception1, Exception2:
+e = ExceptionType()
+e.__dict__ = {"a": 1}
+self.assertEqual(e.a, 1)
+try:
+del e.__dict__
+except (TypeError, AttributeError):
+pass
+else:
+self.fail("%r's __dict__ can be deleted" % e)
+def test_pickles(self):
+# Testing pickling and copying new-style classes and objects...
+import pickle, cPickle
+def sorteditems(d):
+L = d.items()
+L.sort()
+return L
+global C
+class C(object):
+def __init__(self, a, b):
+super(C, self).__init__()
+self.a = a
+self.b = b
+def __repr__(self):
+return "C(%r, %r)" % (self.a, self.b)
+global C1
+class C1(list):
+def __new__(cls, a, b):
+return super(C1, cls).__new__(cls)
+def __getnewargs__(self):
+return (self.a, self.b)
+def __init__(self, a, b):
+self.a = a
+self.b = b
+def __repr__(self):
+return "C1(%r, %r)<%r>" % (self.a, self.b, list(self))
+global C2
+class C2(int):
+def __new__(cls, a, b, val=0):
+return super(C2, cls).__new__(cls, val)
+def __getnewargs__(self):
+return (self.a, self.b, int(self))
+def __init__(self, a, b, val=0):
+self.a = a
+self.b = b
+def __repr__(self):
+return "C2(%r, %r)<%r>" % (self.a, self.b, int(self))
+global C3
+class C3(object):
+def __init__(self, foo):
+self.foo = foo
+def __getstate__(self):
+return self.foo
+def __setstate__(self, foo):
+self.foo = foo
+global C4classic, C4
+class C4classic: # classic
+pass
+class C4(C4classic, object): # mixed inheritance
+pass
+for p in pickle, cPickle:
+for bin in 0, 1:
+for cls in C, C1, C2:
+s = p.dumps(cls, bin)
+cls2 = p.loads(s)
+self.assert_(cls2 is cls)
+a = C1(1, 2); a.append(42); a.append(24)
+b = C2("hello", "world", 42)
+s = p.dumps((a, b), bin)
+x, y = p.loads(s)
+self.assertEqual(x.__class__, a.__class__)
+self.assertEqual(sorteditems(x.__dict__), sorteditems(a.__dict__))
+self.assertEqual(y.__class__, b.__class__)
+self.assertEqual(sorteditems(y.__dict__), sorteditems(b.__dict__))
+self.assertEqual(repr(x), repr(a))
+self.assertEqual(repr(y), repr(b))
+# Test for __getstate__ and __setstate__ on new style class
+u = C3(42)
+s = p.dumps(u, bin)
+v = p.loads(s)
+self.assertEqual(u.__class__, v.__class__)
+self.assertEqual(u.foo, v.foo)
+# Test for picklability of hybrid class
+u = C4()
+u.foo = 42
+s = p.dumps(u, bin)
+v = p.loads(s)
+self.assertEqual(u.__class__, v.__class__)
+self.assertEqual(u.foo, v.foo)
+# Testing copy.deepcopy()
+import copy
+for cls in C, C1, C2:
+cls2 = copy.deepcopy(cls)
+self.assert_(cls2 is cls)
+a = C1(1, 2); a.append(42); a.append(24)
+b = C2("hello", "world", 42)
+x, y = copy.deepcopy((a, b))
+self.assertEqual(x.__class__, a.__class__)
+self.assertEqual(sorteditems(x.__dict__), sorteditems(a.__dict__))
+self.assertEqual(y.__class__, b.__class__)
+self.assertEqual(sorteditems(y.__dict__), sorteditems(b.__dict__))
+self.assertEqual(repr(x), repr(a))
+self.assertEqual(repr(y), repr(b))
+def test_pickle_slots(self):
+# Testing pickling of classes with __slots__ ...
+import pickle, cPickle
+# Pickling of classes with __slots__ but without __getstate__ should fail
+global B, C, D, E
+class B(object):
+pass
+for base in [object, B]:
+class C(base):
+__slots__ = ['a']
+class D(C):
+pass
+try:
+pickle.dumps(C())
+except TypeError:
+pass
+else:
+self.fail("should fail: pickle C instance - %s" % base)
+try:
+cPickle.dumps(C())
+except TypeError:
+pass
+else:
+self.fail("should fail: cPickle C instance - %s" % base)
+try:
+pickle.dumps(C())
+except TypeError:
+pass
+else:
+self.fail("should fail: pickle D instance - %s" % base)
+try:
+cPickle.dumps(D())
+except TypeError:
+pass
+else:
+self.fail("should fail: cPickle D instance - %s" % base)
+# Give C a nice generic __getstate__ and __setstate__
+class C(base):
+__slots__ = ['a']
+def __getstate__(self):
+try:
+d = self.__dict__.copy()
+except AttributeError:
+d = {}
+for cls in self.__class__.__mro__:
+for sn in cls.__dict__.get('__slots__', ()):
+try:
+d[sn] = getattr(self, sn)
+except AttributeError:
+pass
+return d
+def __setstate__(self, d):
+for k, v in d.items():
+setattr(self, k, v)
+class D(C):
+pass
+# Now it should work
+x = C()
+y = pickle.loads(pickle.dumps(x))
+self.assertEqual(hasattr(y, 'a'), 0)
+y = cPickle.loads(cPickle.dumps(x))
+self.assertEqual(hasattr(y, 'a'), 0)
+x.a = 42
+y = pickle.loads(pickle.dumps(x))
+self.assertEqual(y.a, 42)
+y = cPickle.loads(cPickle.dumps(x))
+self.assertEqual(y.a, 42)
+x = D()
+x.a = 42
+x.b = 100
+y = pickle.loads(pickle.dumps(x))
+self.assertEqual(y.a + y.b, 142)
+y = cPickle.loads(cPickle.dumps(x))
+self.assertEqual(y.a + y.b, 142)
+# A subclass that adds a slot should also work
+class E(C):
+__slots__ = ['b']
+x = E()
+x.a = 42
+x.b = "foo"
+y = pickle.loads(pickle.dumps(x))
+self.assertEqual(y.a, x.a)
+self.assertEqual(y.b, x.b)
+y = cPickle.loads(cPickle.dumps(x))
+self.assertEqual(y.a, x.a)
+self.assertEqual(y.b, x.b)
+def test_binary_operator_override(self):
+# Testing overrides of binary operations...
+class I(int):
+def __repr__(self):
+return "I(%r)" % int(self)
+def __add__(self, other):
+return I(int(self) + int(other))
+__radd__ = __add__
+def __pow__(self, other, mod=None):
+if mod is None:
+return I(pow(int(self), int(other)))
+else:
+return I(pow(int(self), int(other), int(mod)))
+def __rpow__(self, other, mod=None):
+if mod is None:
+return I(pow(int(other), int(self), mod))
+else:
+return I(pow(int(other), int(self), int(mod)))
+self.assertEqual(repr(I(1) + I(2)), "I(3)")
+self.assertEqual(repr(I(1) + 2), "I(3)")
+self.assertEqual(repr(1 + I(2)), "I(3)")
+self.assertEqual(repr(I(2) ** I(3)), "I(8)")
+self.assertEqual(repr(2 ** I(3)), "I(8)")
+self.assertEqual(repr(I(2) ** 3), "I(8)")
+self.assertEqual(repr(pow(I(2), I(3), I(5))), "I(3)")
+class S(str):
+def __eq__(self, other):
+return self.lower() == other.lower()
+__hash__ = None # Silence Py3k warning
+def test_subclass_propagation(self):
+# Testing propagation of slot functions to subclasses...
+class A(object):
+pass
+class B(A):
+pass
+class C(A):
+pass
+class D(B, C):
+pass
+d = D()
+orig_hash = hash(d) # related to id(d) in platform-dependent ways
+A.__hash__ = lambda self: 42
+self.assertEqual(hash(d), 42)
+C.__hash__ = lambda self: 314
+self.assertEqual(hash(d), 314)
+B.__hash__ = lambda self: 144
+self.assertEqual(hash(d), 144)
+D.__hash__ = lambda self: 100
+self.assertEqual(hash(d), 100)
+D.__hash__ = None
+self.assertRaises(TypeError, hash, d)
+del D.__hash__
+self.assertEqual(hash(d), 144)
+B.__hash__ = None
+self.assertRaises(TypeError, hash, d)
+del B.__hash__
+self.assertEqual(hash(d), 314)
+C.__hash__ = None
+self.assertRaises(TypeError, hash, d)
+del C.__hash__
+self.assertEqual(hash(d), 42)
+A.__hash__ = None
+self.assertRaises(TypeError, hash, d)
+del A.__hash__
+self.assertEqual(hash(d), orig_hash)
+d.foo = 42
+d.bar = 42
+self.assertEqual(d.foo, 42)
+self.assertEqual(d.bar, 42)
+def __getattribute__(self, name):
+if name == "foo":
+return 24
+return object.__getattribute__(self, name)
+A.__getattribute__ = __getattribute__
+self.assertEqual(d.foo, 24)
+self.assertEqual(d.bar, 42)
+def __getattr__(self, name):
+if name in ("spam", "foo", "bar"):
+return "hello"
+raise AttributeError, name
+B.__getattr__ = __getattr__
+self.assertEqual(d.spam, "hello")
+self.assertEqual(d.foo, 24)
+self.assertEqual(d.bar, 42)
+del A.__getattribute__
+self.assertEqual(d.foo, 42)
+del d.foo
+self.assertEqual(d.foo, "hello")
+self.assertEqual(d.bar, 42)
+del B.__getattr__
+try:
+d.foo
+except AttributeError:
+pass
+else:
+self.fail("d.foo should be undefined now")
+# Test a nasty bug in recurse_down_subclasses()
+import gc
+class A(object):
+pass
+class B(A):
+pass
+del B
+gc.collect()
+A.__setitem__ = lambda *a: None # crash
+def test_buffer_inheritance(self):
+# Testing that buffer interface is inherited ...
+import binascii
+# SF bug [#470040] ParseTuple t# vs subclasses.
+class MyStr(str):
+pass
+base = 'abc'
+m = MyStr(base)
+# b2a_hex uses the buffer interface to get its argument's value, via
+# PyArg_ParseTuple 't#' code.
+self.assertEqual(binascii.b2a_hex(m), binascii.b2a_hex(base))
+# It's not clear that unicode will continue to support the character
+# buffer interface, and this test will fail if that's taken away.
+class MyUni(unicode):
+pass
+base = u'abc'
+m = MyUni(base)
+self.assertEqual(binascii.b2a_hex(m), binascii.b2a_hex(base))
+class MyInt(int):
+pass
+m = MyInt(42)
+try:
+binascii.b2a_hex(m)
+self.fail('subclass of int should not have a buffer interface')
+except TypeError:
+pass
+def test_str_of_str_subclass(self):
+# Testing __str__ defined in subclass of str ...
+import binascii
+import cStringIO
+class octetstring(str):
+def __str__(self):
+return binascii.b2a_hex(self)
+def __repr__(self):
+return self + " repr"
+o = octetstring('A')
+self.assertEqual(type(o), octetstring)
+self.assertEqual(type(str(o)), str)
+self.assertEqual(type(repr(o)), str)
+self.assertEqual(ord(o), 0x41)
+self.assertEqual(str(o), '41')
+self.assertEqual(repr(o), 'A repr')
+self.assertEqual(o.__str__(), '41')
+self.assertEqual(o.__repr__(), 'A repr')
+capture = cStringIO.StringIO()
+# Calling str() or not exercises different internal paths.
+print >> capture, o
+print >> capture, str(o)
+self.assertEqual(capture.getvalue(), '41\n41\n')
+capture.close()
+def test_keyword_arguments(self):
+# Testing keyword arguments to __init__, __call__...
+def f(a): return a
+self.assertEqual(f.__call__(a=42), 42)
+a = []
+list.__init__(a, sequence=[0, 1, 2])
+self.assertEqual(a, [0, 1, 2])
+def test_recursive_call(self):
+# Testing recursive __call__() by setting to instance of class...
+class A(object):
+pass
+A.__call__ = A()
+try:
+A()()
+except RuntimeError:
+pass
+else:
+self.fail("Recursion limit should have been reached for __call__()")
+def test_delete_hook(self):
+# Testing __del__ hook...
+log = []
+class C(object):
+def __del__(self):
+log.append(1)
+c = C()
+self.assertEqual(log, [])
+del c
+self.assertEqual(log, [1])
+class D(object): pass
+d = D()
+try: del d[0]
+except TypeError: pass
+else: self.fail("invalid del() didn't raise TypeError")
+def test_hash_inheritance(self):
+# Testing hash of mutable subclasses...
+class mydict(dict):
+pass
+d = mydict()
+try:
+hash(d)
+except TypeError:
+pass
+else:
+self.fail("hash() of dict subclass should fail")
+class mylist(list):
+pass
+d = mylist()
+try:
+hash(d)
+except TypeError:
+pass
+else:
+self.fail("hash() of list subclass should fail")
+def test_str_operations(self):
+try: 'a' + 5
+except TypeError: pass
+else: self.fail("'' + 5 doesn't raise TypeError")
+try: ''.split('')
+except ValueError: pass
+else: self.fail("''.split('') doesn't raise ValueError")
+try: ''.join([0])
+except TypeError: pass
+else: self.fail("''.join([0]) doesn't raise TypeError")
+try: ''.rindex('5')
+except ValueError: pass
+else: self.fail("''.rindex('5') doesn't raise ValueError")
+try: '%(n)s' % None
+except TypeError: pass
+else: self.fail("'%(n)s' % None doesn't raise TypeError")
+try: '%(n' % {}
+except ValueError: pass
+else: self.fail("'%(n' % {} '' doesn't raise ValueError")
+try: '%*s' % ('abc')
+except TypeError: pass
+else: self.fail("'%*s' % ('abc') doesn't raise TypeError")
+try: '%*.*s' % ('abc', 5)
+except TypeError: pass
+else: self.fail("'%*.*s' % ('abc', 5) doesn't raise TypeError")
+try: '%s' % (1, 2)
+except TypeError: pass
+else: self.fail("'%s' % (1, 2) doesn't raise TypeError")
+try: '%' % None
+except ValueError: pass
+else: self.fail("'%' % None doesn't raise ValueError")
+self.assertEqual('534253'.isdigit(), 1)
+self.assertEqual('534253x'.isdigit(), 0)
+self.assertEqual('%c' % 5, '\x05')
+self.assertEqual('%c' % '5', '5')
+def test_deepcopy_recursive(self):
+# Testing deepcopy of recursive objects...
+class Node:
+pass
+a = Node()
+b = Node()
+a.b = b
+b.a = a
+z = deepcopy(a) # This blew up before
+def test_unintialized_modules(self):
+# Testing uninitialized module objects...
+from types import ModuleType as M
+m = M.__new__(M)
+str(m)
+self.assertEqual(hasattr(m, "__name__"), 0)
+self.assertEqual(hasattr(m, "__file__"), 0)
+self.assertEqual(hasattr(m, "foo"), 0)
+self.assertEqual(m.__dict__, None)
+m.foo = 1
+self.assertEqual(m.__dict__, {"foo": 1})
+def test_funny_new(self):
+# Testing __new__ returning something unexpected...
+class C(object):
+def __new__(cls, arg):
+if isinstance(arg, str): return [1, 2, 3]
+elif isinstance(arg, int): return object.__new__(D)
+else: return object.__new__(cls)
+class D(C):
+def __init__(self, arg):
+self.foo = arg
+self.assertEqual(C("1"), [1, 2, 3])
+self.assertEqual(D("1"), [1, 2, 3])
+d = D(None)
+self.assertEqual(d.foo, None)
+d = C(1)
+self.assertEqual(isinstance(d, D), True)
+self.assertEqual(d.foo, 1)
+d = D(1)
+self.assertEqual(isinstance(d, D), True)
+self.assertEqual(d.foo, 1)
+def test_imul_bug(self):
+# Testing for __imul__ problems...
+# SF bug 544647
+class C(object):
+def __imul__(self, other):
+return (self, other)
+x = C()
+y = x
+y *= 1.0
+self.assertEqual(y, (x, 1.0))
+y = x
+y *= 2
+self.assertEqual(y, (x, 2))
+y = x
+y *= 3L
+self.assertEqual(y, (x, 3L))
+y = x
+y *= 1L<<100
+self.assertEqual(y, (x, 1L<<100))
+y = x
+y *= None
+self.assertEqual(y, (x, None))
+y = x
+y *= "foo"
+self.assertEqual(y, (x, "foo"))
+def test_copy_setstate(self):
+# Testing that copy.*copy() correctly uses __setstate__...
+import copy
+class C(object):
+def __init__(self, foo=None):
+self.foo = foo
+self.__foo = foo
+def setfoo(self, foo=None):
+self.foo = foo
+def getfoo(self):
+return self.__foo
+def __getstate__(self):
+return [self.foo]
+def __setstate__(self_, lst):
+self.assertEqual(len(lst), 1)
+self_.__foo = self_.foo = lst[0]
+a = C(42)
+a.setfoo(24)
+self.assertEqual(a.foo, 24)
+self.assertEqual(a.getfoo(), 42)
+b = copy.copy(a)
+self.assertEqual(b.foo, 24)
+self.assertEqual(b.getfoo(), 24)
+b = copy.deepcopy(a)
+self.assertEqual(b.foo, 24)
+self.assertEqual(b.getfoo(), 24)
+def test_slices(self):
+# Testing cases with slices and overridden __getitem__ ...
+# Strings
+self.assertEqual("hello"[:4], "hell")
+self.assertEqual("hello"[slice(4)], "hell")
+self.assertEqual(str.__getitem__("hello", slice(4)), "hell")
+class S(str):
+def __getitem__(self, x):
+return str.__getitem__(self, x)
+self.assertEqual(S("hello")[:4], "hell")
+self.assertEqual(S("hello")[slice(4)], "hell")
+self.assertEqual(S("hello").__getitem__(slice(4)), "hell")
+# Tuples
+self.assertEqual((1,2,3)[:2], (1,2))
+self.assertEqual((1,2,3)[slice(2)], (1,2))
+self.assertEqual(tuple.__getitem__((1,2,3), slice(2)), (1,2))
+class T(tuple):
+def __getitem__(self, x):
+return tuple.__getitem__(self, x)
+self.assertEqual(T((1,2,3))[:2], (1,2))
+self.assertEqual(T((1,2,3))[slice(2)], (1,2))
+self.assertEqual(T((1,2,3)).__getitem__(slice(2)), (1,2))
+# Lists
+self.assertEqual([1,2,3][:2], [1,2])
+self.assertEqual([1,2,3][slice(2)], [1,2])
+self.assertEqual(list.__getitem__([1,2,3], slice(2)), [1,2])
+class L(list):
+def __getitem__(self, x):
+return list.__getitem__(self, x)
+self.assertEqual(L([1,2,3])[:2], [1,2])
+self.assertEqual(L([1,2,3])[slice(2)], [1,2])
+self.assertEqual(L([1,2,3]).__getitem__(slice(2)), [1,2])
+# Now do lists and __setitem__
+a = L([1,2,3])
+a[slice(1, 3)] = [3,2]
+self.assertEqual(a, [1,3,2])
+a[slice(0, 2, 1)] = [3,1]
+self.assertEqual(a, [3,1,2])
+a.__setitem__(slice(1, 3), [2,1])
+self.assertEqual(a, [3,2,1])
+a.__setitem__(slice(0, 2, 1), [2,3])
+self.assertEqual(a, [2,3,1])
+def test_subtype_resurrection(self):
+# Testing resurrection of new-style instance...
+class C(object):
+container = []
+def __del__(self):
+# resurrect the instance
+C.container.append(self)
+c = C()
+c.attr = 42
+# The most interesting thing here is whether this blows up, due to flawed
+# GC tracking logic in typeobject.c's call_finalizer() (a 2.2.1 bug).
+del c
+# If that didn't blow up, it's also interesting to see whether clearing
+# the last container slot works:  that will attempt to delete c again,
+# which will cause c to get appended back to the container again "during"
+# the del.
+del C.container[-1]
+self.assertEqual(len(C.container), 1)
+self.assertEqual(C.container[-1].attr, 42)
+# Make c mortal again, so that the test framework with -l doesn't report
+# it as a leak.
+del C.__del__
+def test_slots_trash(self):
+# Testing slot trash...
+# Deallocating deeply nested slotted trash caused stack overflows
+class trash(object):
+__slots__ = ['x']
+def __init__(self, x):
+self.x = x
+o = None
+for i in xrange(50000):
+o = trash(o)
+del o
+def test_slots_multiple_inheritance(self):
+# SF bug 575229, multiple inheritance w/ slots dumps core
+class A(object):
+__slots__=()
+class B(object):
+pass
+class C(A,B) :
+__slots__=()
+self.assertEqual(C.__basicsize__, B.__basicsize__)
+self.assert_(hasattr(C, '__dict__'))
+self.assert_(hasattr(C, '__weakref__'))
+C().x = 2
+def test_rmul(self):
+# Testing correct invocation of __rmul__...
+# SF patch 592646
+class C(object):
+def __mul__(self, other):
+return "mul"
+def __rmul__(self, other):
+return "rmul"
+a = C()
+self.assertEqual(a*2, "mul")
+self.assertEqual(a*2.2, "mul")
+self.assertEqual(2*a, "rmul")
+self.assertEqual(2.2*a, "rmul")
+def test_ipow(self):
+# Testing correct invocation of __ipow__...
+# [SF bug 620179]
+class C(object):
+def __ipow__(self, other):
+pass
+a = C()
+a **= 2
+def test_mutable_bases(self):
+# Testing mutable bases...
+# stuff that should work:
+class C(object):
+pass
+class C2(object):
+def __getattribute__(self, attr):
+if attr == 'a':
+return 2
+else:
+return super(C2, self).__getattribute__(attr)
+def meth(self):
+return 1
+class D(C):
+pass
+class E(D):
+pass
+d = D()
+e = E()
+D.__bases__ = (C,)
+D.__bases__ = (C2,)
+self.assertEqual(d.meth(), 1)
+self.assertEqual(e.meth(), 1)
+self.assertEqual(d.a, 2)
+self.assertEqual(e.a, 2)
+self.assertEqual(C2.__subclasses__(), [D])
+# stuff that shouldn't:
+class L(list):
+pass
+try:
+L.__bases__ = (dict,)
+except TypeError:
+pass
+else:
+self.fail("shouldn't turn list subclass into dict subclass")
+try:
+list.__bases__ = (dict,)
+except TypeError:
+pass
+else:
+self.fail("shouldn't be able to assign to list.__bases__")
+try:
+D.__bases__ = (C2, list)
+except TypeError:
+pass
+else:
+assert 0, "best_base calculation found wanting"
+try:
+del D.__bases__
+except TypeError:
+pass
+else:
+self.fail("shouldn't be able to delete .__bases__")
+try:
+D.__bases__ = ()
+except TypeError, msg:
+if str(msg) == "a new-style class can't have only classic bases":
+self.fail("wrong error message for .__bases__ = ()")
+else:
+self.fail("shouldn't be able to set .__bases__ to ()")
+try:
+D.__bases__ = (D,)
+except TypeError:
+pass
+else:
+# actually, we'll have crashed by here...
+self.fail("shouldn't be able to create inheritance cycles")
+try:
+D.__bases__ = (C, C)
+except TypeError:
+pass
+else:
+self.fail("didn't detect repeated base classes")
+try:
+D.__bases__ = (E,)
+except TypeError:
+pass
+else:
+self.fail("shouldn't be able to create inheritance cycles")
+# let's throw a classic class into the mix:
+class Classic:
+def meth2(self):
+return 3
+D.__bases__ = (C, Classic)
+self.assertEqual(d.meth2(), 3)
+self.assertEqual(e.meth2(), 3)
+try:
+d.a
+except AttributeError:
+pass
+else:
+self.fail("attribute should have vanished")
+try:
+D.__bases__ = (Classic,)
+except TypeError:
+pass
+else:
+self.fail("new-style class must have a new-style base")
+def test_mutable_bases_with_failing_mro(self):
+# Testing mutable bases with failing mro...
+class WorkOnce(type):
+def __new__(self, name, bases, ns):
+self.flag = 0
+return super(WorkOnce, self).__new__(WorkOnce, name, bases, ns)
+def mro(self):
+if self.flag > 0:
+raise RuntimeError, "bozo"
+else:
+self.flag += 1
+return type.mro(self)
+class WorkAlways(type):
+def mro(self):
+# this is here to make sure that .mro()s aren't called
+# with an exception set (which was possible at one point).
+# An error message will be printed in a debug build.
+# What's a good way to test for this?
+return type.mro(self)
+class C(object):
+pass
+class C2(object):
+pass
+class D(C):
+pass
+class E(D):
+pass
+class F(D):
+__metaclass__ = WorkOnce
+class G(D):
+__metaclass__ = WorkAlways
+# Immediate subclasses have their mro's adjusted in alphabetical
+# order, so E's will get adjusted before adjusting F's fails.  We
+# check here that E's gets restored.
+E_mro_before = E.__mro__
+D_mro_before = D.__mro__
+try:
+D.__bases__ = (C2,)
+except RuntimeError:
+self.assertEqual(E.__mro__, E_mro_before)
+self.assertEqual(D.__mro__, D_mro_before)
+else:
+self.fail("exception not propagated")
+def test_mutable_bases_catch_mro_conflict(self):
+# Testing mutable bases catch mro conflict...
+class A(object):
+pass
+class B(object):
+pass
+class C(A, B):
+pass
+class D(A, B):
+pass
+class E(C, D):
+pass
+try:
+C.__bases__ = (B, A)
+except TypeError:
+pass
+else:
+self.fail("didn't catch MRO conflict")
+def test_mutable_names(self):
+# Testing mutable names...
+class C(object):
+pass
+# C.__module__ could be 'test_descr' or '__main__'
+mod = C.__module__
+C.__name__ = 'D'
+self.assertEqual((C.__module__, C.__name__), (mod, 'D'))
+C.__name__ = 'D.E'
+self.assertEqual((C.__module__, C.__name__), (mod, 'D.E'))
+def test_subclass_right_op(self):
+# Testing correct dispatch of subclass overloading __r<op>__...
+# This code tests various cases where right-dispatch of a subclass
+# should be preferred over left-dispatch of a base class.
+# Case 1: subclass of int; this tests code in abstract.c::binary_op1()
+class B(int):
+def __floordiv__(self, other):
+return "B.__floordiv__"
+def __rfloordiv__(self, other):
+return "B.__rfloordiv__"
+self.assertEqual(B(1) // 1, "B.__floordiv__")
+self.assertEqual(1 // B(1), "B.__rfloordiv__")
+# Case 2: subclass of object; this is just the baseline for case 3
+class C(object):
+def __floordiv__(self, other):
+return "C.__floordiv__"
+def __rfloordiv__(self, other):
+return "C.__rfloordiv__"
+self.assertEqual(C() // 1, "C.__floordiv__")
+self.assertEqual(1 // C(), "C.__rfloordiv__")
+# Case 3: subclass of new-style class; here it gets interesting
+class D(C):
+def __floordiv__(self, other):
+return "D.__floordiv__"
+def __rfloordiv__(self, other):
+return "D.__rfloordiv__"
+self.assertEqual(D() // C(), "D.__floordiv__")
+self.assertEqual(C() // D(), "D.__rfloordiv__")
+# Case 4: this didn't work right in 2.2.2 and 2.3a1
+class E(C):
+pass
+self.assertEqual(E.__rfloordiv__, C.__rfloordiv__)
+self.assertEqual(E() // 1, "C.__floordiv__")
+self.assertEqual(1 // E(), "C.__rfloordiv__")
+self.assertEqual(E() // C(), "C.__floordiv__")
+self.assertEqual(C() // E(), "C.__floordiv__") # This one would fail
+def test_meth_class_get(self):
+# Testing __get__ method of METH_CLASS C methods...
+# Full coverage of descrobject.c::classmethod_get()
+# Baseline
+arg = [1, 2, 3]
+res = {1: None, 2: None, 3: None}
+self.assertEqual(dict.fromkeys(arg), res)
+self.assertEqual({}.fromkeys(arg), res)
+# Now get the descriptor
+descr = dict.__dict__["fromkeys"]
+# More baseline using the descriptor directly
+self.assertEqual(descr.__get__(None, dict)(arg), res)
+self.assertEqual(descr.__get__({})(arg), res)
+# Now check various error cases
+try:
+descr.__get__(None, None)
+except TypeError:
+pass
+else:
+self.fail("shouldn't have allowed descr.__get__(None, None)")
+try:
+descr.__get__(42)
+except TypeError:
+pass
+else:
+self.fail("shouldn't have allowed descr.__get__(42)")
+try:
+descr.__get__(None, 42)
+except TypeError:
+pass
+else:
+self.fail("shouldn't have allowed descr.__get__(None, 42)")
+try:
+descr.__get__(None, int)
+except TypeError:
+pass
+else:
+self.fail("shouldn't have allowed descr.__get__(None, int)")
+def test_isinst_isclass(self):
+# Testing proxy isinstance() and isclass()...
+class Proxy(object):
+def __init__(self, obj):
+self.__obj = obj
+def __getattribute__(self, name):
+if name.startswith("_Proxy__"):
+return object.__getattribute__(self, name)
+else:
+return getattr(self.__obj, name)
+# Test with a classic class
+class C:
+pass
+a = C()
+pa = Proxy(a)
+self.assert_(isinstance(a, C))  # Baseline
+self.assert_(isinstance(pa, C)) # Test
+# Test with a classic subclass
+class D(C):
+pass
+a = D()
+pa = Proxy(a)
+self.assert_(isinstance(a, C))  # Baseline
+self.assert_(isinstance(pa, C)) # Test
+# Test with a new-style class
+class C(object):
+pass
+a = C()
+pa = Proxy(a)
+self.assert_(isinstance(a, C))  # Baseline
+self.assert_(isinstance(pa, C)) # Test
+# Test with a new-style subclass
+class D(C):
+pass
+a = D()
+pa = Proxy(a)
+self.assert_(isinstance(a, C))  # Baseline
+self.assert_(isinstance(pa, C)) # Test
+def test_proxy_super(self):
+# Testing super() for a proxy object...
+class Proxy(object):
+def __init__(self, obj):
+self.__obj = obj
+def __getattribute__(self, name):
+if name.startswith("_Proxy__"):
+return object.__getattribute__(self, name)
+else:
+return getattr(self.__obj, name)
+class B(object):
+def f(self):
+return "B.f"
+class C(B):
+def f(self):
+return super(C, self).f() + "->C.f"
+obj = C()
+p = Proxy(obj)
+self.assertEqual(C.__dict__["f"](p), "B.f->C.f")
+def test_carloverre(self):
+# Testing prohibition of Carlo Verre's hack...
+try:
+object.__setattr__(str, "foo", 42)
+except TypeError:
+pass
+else:
+self.fail("Carlo Verre __setattr__ suceeded!")
+try:
+object.__delattr__(str, "lower")
+except TypeError:
+pass
+else:
+self.fail("Carlo Verre __delattr__ succeeded!")
+def test_weakref_segfault(self):
+# Testing weakref segfault...
+# SF 742911
+import weakref
+class Provoker:
+def __init__(self, referrent):
+self.ref = weakref.ref(referrent)
+def __del__(self):
+x = self.ref()
+class Oops(object):
+pass
+o = Oops()
+o.whatever = Provoker(o)
+del o
+def test_wrapper_segfault(self):
+# SF 927248: deeply nested wrappers could cause stack overflow
+f = lambda:None
+for i in xrange(1000000):
+f = f.__call__
+f = None
+def test_file_fault(self):
+# Testing sys.stdout is changed in getattr...
+import sys
+class StdoutGuard:
+def __getattr__(self, attr):
+sys.stdout = sys.__stdout__
+raise RuntimeError("Premature access to sys.stdout.%s" % attr)
+sys.stdout = StdoutGuard()
+try:
+print "Oops!"
+except RuntimeError:
+pass
+def test_vicious_descriptor_nonsense(self):
+# Testing vicious_descriptor_nonsense...
+# A potential segfault spotted by Thomas Wouters in mail to
+# python-dev 2003-04-17, turned into an example & fixed by Michael
+# Hudson just less than four months later...
+class Evil(object):
+def __hash__(self):
+return hash('attr')
+def __eq__(self, other):
+del C.attr
+return 0
+class Descr(object):
+def __get__(self, ob, type=None):
+return 1
+class C(object):
+attr = Descr()
+c = C()
+c.__dict__[Evil()] = 0
+self.assertEqual(c.attr, 1)
+# this makes a crash more likely:
+import gc; gc.collect()
+self.assertEqual(hasattr(c, 'attr'), False)
+def test_init(self):
+# SF 1155938
+class Foo(object):
+def __init__(self):
+return 10
+try:
+Foo()
+except TypeError:
+pass
+else:
+self.fail("did not test __init__() for None return")
+def test_method_wrapper(self):
+# Testing method-wrapper objects...
+# <type 'method-wrapper'> did not support any reflection before 2.5
+l = []
+self.assertEqual(l.__add__, l.__add__)
+self.assertEqual(l.__add__, [].__add__)
+self.assert_(l.__add__ != [5].__add__)
+self.assert_(l.__add__ != l.__mul__)
+self.assert_(l.__add__.__name__ == '__add__')
+self.assert_(l.__add__.__self__ is l)
+self.assert_(l.__add__.__objclass__ is list)
+self.assertEqual(l.__add__.__doc__, list.__add__.__doc__)
+try:
+hash(l.__add__)
+except TypeError:
+pass
+else:
+self.fail("no TypeError from hash([].__add__)")
+t = ()
+t += (7,)
+self.assertEqual(t.__add__, (7,).__add__)
+self.assertEqual(hash(t.__add__), hash((7,).__add__))
+def test_not_implemented(self):
+# Testing NotImplemented...
+# all binary methods should be able to return a NotImplemented
+import sys
+import types
+import operator
+def specialmethod(self, other):
+return NotImplemented
+def check(expr, x, y):
+try:
+exec expr in {'x': x, 'y': y, 'operator': operator}
+except TypeError:
+pass
+else:
+self.fail("no TypeError from %r" % (expr,))
+N1 = sys.maxint + 1L    # might trigger OverflowErrors instead of
+# TypeErrors
+N2 = sys.maxint         # if sizeof(int) < sizeof(long), might trigger
+#   ValueErrors instead of TypeErrors
+for metaclass in [type, types.ClassType]:
+for name, expr, iexpr in [
+('__add__',      'x + y',                   'x += y'),
+('__sub__',      'x - y',                   'x -= y'),
+('__mul__',      'x * y',                   'x *= y'),
+('__truediv__',  'operator.truediv(x, y)',  None),
+('__floordiv__', 'operator.floordiv(x, y)', None),
+('__div__',      'x / y',                   'x /= y'),
+('__mod__',      'x % y',                   'x %= y'),
+('__divmod__',   'divmod(x, y)',            None),
+('__pow__',      'x ** y',                  'x **= y'),
+('__lshift__',   'x << y',                  'x <<= y'),
+('__rshift__',   'x >> y',                  'x >>= y'),
+('__and__',      'x & y',                   'x &= y'),
+('__or__',       'x | y',                   'x |= y'),
+('__xor__',      'x ^ y',                   'x ^= y'),
+('__coerce__',   'coerce(x, y)',            None)]:
+if name == '__coerce__':
+rname = name
+else:
+rname = '__r' + name[2:]
+A = metaclass('A', (), {name: specialmethod})
+B = metaclass('B', (), {rname: specialmethod})
+a = A()
+b = B()
+check(expr, a, a)
+check(expr, a, b)
+check(expr, b, a)
+check(expr, b, b)
+check(expr, a, N1)
+check(expr, a, N2)
+check(expr, N1, b)
+check(expr, N2, b)
+if iexpr:
+check(iexpr, a, a)
+check(iexpr, a, b)
+check(iexpr, b, a)
+check(iexpr, b, b)
+check(iexpr, a, N1)
+check(iexpr, a, N2)
+iname = '__i' + name[2:]
+C = metaclass('C', (), {iname: specialmethod})
+c = C()
+check(iexpr, c, a)
+check(iexpr, c, b)
+check(iexpr, c, N1)
+check(iexpr, c, N2)
+def test_assign_slice(self):
+# ceval.c's assign_slice used to check for
+# tp->tp_as_sequence->sq_slice instead of
+# tp->tp_as_sequence->sq_ass_slice
+class C(object):
+def __setslice__(self, start, stop, value):
+self.value = value
+c = C()
+c[1:2] = 3
+self.assertEqual(c.value, 3)
+def test_getattr_hooks(self):
+# issue 4230
+class Descriptor(object):
+counter = 0
+def __get__(self, obj, objtype=None):
+def getter(name):
+self.counter += 1
+raise AttributeError(name)
+return getter
+descr = Descriptor()
+class A(object):
+__getattribute__ = descr
+class B(object):
+__getattr__ = descr
+class C(object):
+__getattribute__ = descr
+__getattr__ = descr
+self.assertRaises(AttributeError, getattr, A(), "attr")
+self.assertEquals(descr.counter, 1)
+self.assertRaises(AttributeError, getattr, B(), "attr")
+self.assertEquals(descr.counter, 2)
+self.assertRaises(AttributeError, getattr, C(), "attr")
+self.assertEquals(descr.counter, 4)
+import gc
+class EvilGetattribute(object):
+# This used to segfault
+def __getattr__(self, name):
+raise AttributeError(name)
+def __getattribute__(self, name):
+del EvilGetattribute.__getattr__
+for i in range(5):
+gc.collect()
+raise AttributeError(name)
+self.assertRaises(AttributeError, getattr, EvilGetattribute(), "attr")
+class DictProxyTests(unittest.TestCase):
+def setUp(self):
+class C(object):
+def meth(self):
+pass
+self.C = C
+def test_iter_keys(self):
+# Testing dict-proxy iterkeys...
+keys = [ key for key in self.C.__dict__.iterkeys() ]
+keys.sort()
+self.assertEquals(keys, ['__dict__', '__doc__', '__module__',
+'__weakref__', 'meth'])
+def test_iter_values(self):
+# Testing dict-proxy itervalues...
+values = [ values for values in self.C.__dict__.itervalues() ]
+self.assertEqual(len(values), 5)
+def test_iter_items(self):
+# Testing dict-proxy iteritems...
+keys = [ key for (key, value) in self.C.__dict__.iteritems() ]
+keys.sort()
+self.assertEqual(keys, ['__dict__', '__doc__', '__module__',
+'__weakref__', 'meth'])
+def test_dict_type_with_metaclass(self):
+# Testing type of __dict__ when __metaclass__ set...
+class B(object):
+pass
+class M(type):
+pass
+class C:
+# In 2.3a1, C.__dict__ was a real dict rather than a dict proxy
+__metaclass__ = M
+self.assertEqual(type(C.__dict__), type(B.__dict__))
+class PTypesLongInitTest(unittest.TestCase):
+# This is in its own TestCase so that it can be run before any other tests.
+def test_pytype_long_ready(self):
+# Testing SF bug 551412 ...
+# This dumps core when SF bug 551412 isn't fixed --
+# but only when test_descr.py is run separately.
+# (That can't be helped -- as soon as PyType_Ready()
+# is called for PyLong_Type, the bug is gone.)
+class UserLong(object):
+def __pow__(self, *args):
+pass
+try:
+pow(0L, UserLong(), 0L)
+except:
+pass
+# Another segfault only when run early
+# (before PyType_Ready(tuple) is called)
+type.mro(tuple)
+def test_main():
+# Run all local test cases, with PTypesLongInitTest first.
+test_support.run_unittest(PTypesLongInitTest, OperatorsTest,
+ClassPropertiesAndMethods, DictProxyTests)
+if __name__ == "__main__":
+test_main()