diff options
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_descr.py')
| -rw-r--r-- | AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_descr.py | 4659 |
1 files changed, 4659 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_descr.py b/AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_descr.py new file mode 100644 index 0000000000..42face46c1 --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_descr.py @@ -0,0 +1,4659 @@ +import __builtin__
+import sys
+import types
+import unittest
+
+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 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]
+ # in some implementations (e.g. PyPy), 'm' can be a regular unbound
+ # method object; the getattr() below obtains its underlying function.
+ self.assertEqual(getattr(m, 'im_func', 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]
+ # in some implementations (e.g. PyPy), 'm' can be a regular unbound
+ # method object; the getattr() below obtains its underlying function.
+ self.assertEqual(getattr(m, 'im_func', 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]
+ # in some implementations (e.g. PyPy), 'm' can be a regular unbound
+ # method object; the getattr() below obtains its underlying function.
+ self.assertEqual(getattr(m, 'im_func', 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]
+ # in some implementations (e.g. PyPy), 'm' can be a regular unbound
+ # method object; the getattr() below obtains its underlying function.
+ self.assertEqual(getattr(m, 'im_func', 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]
+ # in some implementations (e.g. PyPy), 'm' can be a regular unbound
+ # method object; the getattr() below obtains its underlying function.
+ self.assertEqual(getattr(m, 'im_func', 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)
+ # in some implementations (e.g. PyPy), 'm' can be a regular unbound
+ # method object; the getattr() below obtains its underlying function.
+ self.assertEqual(getattr(m, 'im_func', 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...
+ if hasattr(dict, '__cmp__'): # PyPy has only rich comparison on dicts
+ self.binop_test({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
+ else:
+ self.binop_test({1:2}, {2:1}, True, "a < b", "__lt__")
+ 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")
+ 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)
+
+ @test_support.impl_detail("the module 'xxsubtype' is internal")
+ 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)
+
+ @test_support.impl_detail("the module 'xxsubtype' is internal")
+ 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.assertTrue(issubclass(dict, dict))
+ self.assertIsInstance({}, dict)
+ d = dict()
+ self.assertEqual(d, {})
+ self.assertTrue(d.__class__ is dict)
+ self.assertIsInstance(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.assertIsInstance(key, type(0))
+ dict.__setitem__(self_local, key, value)
+ def setstate(self, state):
+ self.state = state
+ def getstate(self):
+ return self.state
+ self.assertTrue(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.assertIn('spam', 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.assertTrue(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 = []
+ 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 consistency 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:
+ # the exact msg is generally considered an impl detail
+ if test_support.check_impl_detail():
+ 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
+ test_support.gc_collect()
+ self.assertEqual(Counted.counter, 0)
+ class D(C):
+ pass
+ x = D()
+ x.a = Counted()
+ x.z = Counted()
+ self.assertEqual(Counted.counter, 2)
+ del x
+ test_support.gc_collect()
+ 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
+ test_support.gc_collect()
+ self.assertEqual(Counted.counter, 0)
+
+ # Test cyclical leaks [SF bug 519621]
+ class F(object):
+ __slots__ = ['a', 'b']
+ s = F()
+ s.a = [Counted(), s]
+ self.assertEqual(Counted.counter, 1)
+ s = None
+ test_support.gc_collect()
+ self.assertEqual(Counted.counter, 0)
+
+ # Test lookup leaks [SF bug 572567]
+ import gc
+ if hasattr(gc, 'get_objects'):
+ 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(), '')
+
+ class X(object):
+ __slots__ = "a"
+ with self.assertRaises(AttributeError):
+ del X().a
+
+ def test_slots_special(self):
+ # Testing __dict__ and __weakref__ in __slots__...
+ class D(object):
+ __slots__ = ["__dict__"]
+ a = D()
+ self.assertTrue(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.assertTrue(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.assertTrue(hasattr(a, "__dict__"))
+ self.assertTrue(hasattr(a, "__weakref__"))
+ a.foo = 42
+ self.assertEqual(a.__dict__, {"foo": 42})
+
+ class C2(D, W):
+ __slots__ = []
+ a = C2()
+ self.assertTrue(hasattr(a, "__dict__"))
+ self.assertTrue(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.assertIsInstance(u, MyABC)
+
+ # This used to crash
+ self.assertRaises(TypeError, MyABC.a.__set__, u, 3)
+
+ def test_metaclass_cmp(self):
+ # See bug 7491.
+ class M(type):
+ def __cmp__(self, other):
+ return -1
+ class X(object):
+ __metaclass__ = M
+ self.assertTrue(X < M)
+
+ 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 a non-callable will raise
+ meth = classmethod(1).__get__(1)
+ self.assertRaises(TypeError, meth)
+
+ # 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")
+
+ @test_support.impl_detail("the module 'xxsubtype' is internal")
+ 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))
+
+ @test_support.impl_detail("the module 'xxsubtype' is internal")
+ 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.assertTrue(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]
+ # In CPython, the class creation above already raises
+ # TypeError, as a protection against the fact that
+ # instances of X would segfault it. In other Python
+ # implementations it would be ok to let the class X
+ # be created, but instead get a clean TypeError on the
+ # __setitem__ below.
+ x = object.__new__(X)
+ x[5] = 6
+ 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.assertTrue(repr(C.foo.__get__(C(1))).startswith("<bound method "))
+
+ def test_special_method_lookup(self):
+ # The lookup of special methods bypasses __getattr__ and
+ # __getattribute__, but they still can be descriptors.
+
+ def run_context(manager):
+ with manager:
+ pass
+ def iden(self):
+ return self
+ def hello(self):
+ return "hello"
+ def empty_seq(self):
+ return []
+ def zero(self):
+ return 0
+ def complex_num(self):
+ return 1j
+ def stop(self):
+ raise StopIteration
+ def return_true(self, thing=None):
+ return True
+ def do_isinstance(obj):
+ return isinstance(int, obj)
+ def do_issubclass(obj):
+ return issubclass(int, obj)
+ def swallow(*args):
+ pass
+ def do_dict_missing(checker):
+ class DictSub(checker.__class__, dict):
+ pass
+ self.assertEqual(DictSub()["hi"], 4)
+ def some_number(self_, key):
+ self.assertEqual(key, "hi")
+ return 4
+ def format_impl(self, spec):
+ return "hello"
+
+ # It would be nice to have every special method tested here, but I'm
+ # only listing the ones I can remember outside of typeobject.c, since it
+ # does it right.
+ specials = [
+ ("__unicode__", unicode, hello, set(), {}),
+ ("__reversed__", reversed, empty_seq, set(), {}),
+ ("__length_hint__", list, zero, set(),
+ {"__iter__" : iden, "next" : stop}),
+ ("__sizeof__", sys.getsizeof, zero, set(), {}),
+ ("__instancecheck__", do_isinstance, return_true, set(), {}),
+ ("__missing__", do_dict_missing, some_number,
+ set(("__class__",)), {}),
+ ("__subclasscheck__", do_issubclass, return_true,
+ set(("__bases__",)), {}),
+ ("__enter__", run_context, iden, set(), {"__exit__" : swallow}),
+ ("__exit__", run_context, swallow, set(), {"__enter__" : iden}),
+ ("__complex__", complex, complex_num, set(), {}),
+ ("__format__", format, format_impl, set(), {}),
+ ("__dir__", dir, empty_seq, set(), {}),
+ ]
+
+ class Checker(object):
+ def __getattr__(self, attr, test=self):
+ test.fail("__getattr__ called with {0}".format(attr))
+ def __getattribute__(self, attr, test=self):
+ if attr not in ok:
+ test.fail("__getattribute__ called with {0}".format(attr))
+ return object.__getattribute__(self, attr)
+ class SpecialDescr(object):
+ def __init__(self, impl):
+ self.impl = impl
+ def __get__(self, obj, owner):
+ record.append(1)
+ return self.impl.__get__(obj, owner)
+ class MyException(Exception):
+ pass
+ class ErrDescr(object):
+ def __get__(self, obj, owner):
+ raise MyException
+
+ for name, runner, meth_impl, ok, env in specials:
+ class X(Checker):
+ pass
+ for attr, obj in env.iteritems():
+ setattr(X, attr, obj)
+ setattr(X, name, meth_impl)
+ runner(X())
+
+ record = []
+ class X(Checker):
+ pass
+ for attr, obj in env.iteritems():
+ setattr(X, attr, obj)
+ setattr(X, name, SpecialDescr(meth_impl))
+ runner(X())
+ self.assertEqual(record, [1], name)
+
+ class X(Checker):
+ pass
+ for attr, obj in env.iteritems():
+ setattr(X, attr, obj)
+ setattr(X, name, ErrDescr())
+ try:
+ runner(X())
+ except MyException:
+ pass
+ else:
+ self.fail("{0!r} didn't raise".format(name))
+
+ 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.assertTrue(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.assertTrue(c1 != c2)
+ self.assertTrue(not c1 != c1)
+ self.assertTrue(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.assertTrue(str(c1).find('C object at ') >= 0)
+ self.assertEqual(str(c1), repr(c1))
+ self.assertNotIn(-1, c1)
+ for i in range(10):
+ self.assertIn(i, c1)
+ self.assertNotIn(10, 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.assertTrue(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.assertTrue(not d1 != d1)
+ self.assertTrue(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.assertTrue(str(d1).find('D object at ') >= 0)
+ self.assertEqual(str(d1), repr(d1))
+ self.assertNotIn(-1, d1)
+ for i in range(10):
+ self.assertIn(i, d1)
+ self.assertNotIn(10, 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.assertTrue(not not p1)
+ self.assertEqual(hash(p0), hash(0))
+ self.assertEqual(p0, p0)
+ self.assertNotEqual(p0, p1)
+ self.assertTrue(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.assertNotIn(-1, p10)
+ for i in range(10):
+ self.assertIn(i, p10)
+ self.assertNotIn(10, 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.assertTrue(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.assertNotIn(-1, p10)
+ for i in range(10):
+ self.assertIn(i, p10)
+ self.assertNotIn(10, p10)
+
+ # Safety test for __cmp__
+ def unsafecmp(a, b):
+ if not hasattr(a, '__cmp__'):
+ return # some types don't have a __cmp__ any more (so the
+ # test doesn't make sense any more), or maybe they
+ # never had a __cmp__ at all, e.g. in PyPy
+ 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)
+
+ @test_support.impl_detail("custom logic for printing to real file objects")
+ def test_recursions_1(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
+ 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
+
+ def test_recursions_2(self):
+ # 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
+ test_support.gc_collect()
+ self.assertEqual(r(), None)
+ del r
+ class NoWeak(object):
+ __slots__ = ['foo']
+ no = NoWeak()
+ try:
+ weakref.ref(no)
+ except TypeError, msg:
+ self.assertTrue(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
+ test_support.gc_collect()
+ 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.assertIsInstance(raw, property)
+
+ attrs = dir(raw)
+ self.assertIn("__doc__", attrs)
+ self.assertIn("fget", attrs)
+ self.assertIn("fset", attrs)
+ self.assertIn("fdel", attrs)
+
+ self.assertEqual(raw.__doc__, "I'm the x property.")
+ self.assertTrue(raw.fget is C.__dict__['getx'])
+ self.assertTrue(raw.fset is C.__dict__['setx'])
+ self.assertTrue(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")
+
+ @unittest.skipIf(sys.flags.optimize >= 2,
+ "Docstrings are omitted with -O2 and above")
+ def test_properties_doc_attrib(self):
+ 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)
+
+ def test_testcapi_no_segfault(self):
+ # 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.assertTrue(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.assertIn('im_self', 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.assertIn('im_self', dir(c.Cmethod))
+
+ class A(C):
+ Adata = 1
+ def Amethod(self): pass
+
+ astuff = ['Adata', 'Amethod'] + cstuff
+ self.assertEqual(dir(A), astuff)
+ self.assertIn('im_self', dir(A.Amethod))
+ a = A()
+ self.assertEqual(dir(a), astuff)
+ self.assertIn('im_self', 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.assertIn('im_self', dir(C.Cmethod))
+
+ c.cdata = 2
+ c.cmethod = lambda self: 0
+ self.assertEqual(interesting(dir(c)), cstuff + ['cdata', 'cmethod'])
+ self.assertIn('im_self', dir(c.Cmethod))
+
+ class A(C):
+ Adata = 1
+ def Amethod(self): pass
+
+ astuff = ['Adata', 'Amethod'] + cstuff
+ self.assertEqual(interesting(dir(A)), astuff)
+ self.assertIn('im_self', 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.assertIn('im_self', dir(a.Amethod))
+
+ # Try a module subclass.
+ 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(NotImplemented), dir(Ellipsis))
+ if test_support.check_impl_detail():
+ # None differs in PyPy: it has a __nonzero__
+ 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.assertTrue(int(a).__class__ is int)
+ self.assertEqual(hash(a), hash(12345))
+ self.assertTrue((+a).__class__ is int)
+ self.assertTrue((a >> 0).__class__ is int)
+ self.assertTrue((a << 0).__class__ is int)
+ self.assertTrue((hexint(0) << 12).__class__ is int)
+ self.assertTrue((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.assertTrue(long(a).__class__ is long)
+ self.assertTrue((+a).__class__ is long)
+ self.assertTrue((-a).__class__ is long)
+ self.assertTrue((-octlong(0)).__class__ is long)
+ self.assertTrue((a >> 0).__class__ is long)
+ self.assertTrue((a << 0).__class__ is long)
+ self.assertTrue((a - 0).__class__ is long)
+ self.assertTrue((a * 1).__class__ is long)
+ self.assertTrue((a ** 1).__class__ is long)
+ self.assertTrue((a // 1).__class__ is long)
+ self.assertTrue((1 * a).__class__ is long)
+ self.assertTrue((a | 0).__class__ is long)
+ self.assertTrue((a ^ 0).__class__ is long)
+ self.assertTrue((a & -1L).__class__ is long)
+ self.assertTrue((octlong(0) << 12).__class__ is long)
+ self.assertTrue((octlong(0) >> 12).__class__ is long)
+ self.assertTrue(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.assertTrue((a + 0).__class__ is long)
+ self.assertTrue((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.assertTrue 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.assertTrue(float(a).__class__ is float)
+ self.assertEqual(hash(a), hash(12345.0))
+ self.assertTrue((+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.assertTrue(tuple(a).__class__ is tuple)
+ self.assertEqual(hash(a), hash((1,2,3,4,5)))
+ self.assertTrue(a[:].__class__ is tuple)
+ self.assertTrue((a * 1).__class__ is tuple)
+ self.assertTrue((a * 0).__class__ is tuple)
+ self.assertTrue((a + ()).__class__ is tuple)
+ a = madtuple(())
+ self.assertEqual(tuple(a), ())
+ self.assertTrue(tuple(a).__class__ is tuple)
+ self.assertTrue((a + a).__class__ is tuple)
+ self.assertTrue((a * 0).__class__ is tuple)
+ self.assertTrue((a * 1).__class__ is tuple)
+ self.assertTrue((a * 2).__class__ is tuple)
+ self.assertTrue(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.assertTrue(str(s).__class__ is str)
+
+ base = "\x00" * 5
+ s = madstring(base)
+ self.assertEqual(s, base)
+ self.assertEqual(str(s), base)
+ self.assertTrue(str(s).__class__ is str)
+ self.assertEqual(hash(s), hash(base))
+ self.assertEqual({s: 1}[base], 1)
+ self.assertEqual({base: 1}[s], 1)
+ self.assertTrue((s + "").__class__ is str)
+ self.assertEqual(s + "", base)
+ self.assertTrue(("" + s).__class__ is str)
+ self.assertEqual("" + s, base)
+ self.assertTrue((s * 0).__class__ is str)
+ self.assertEqual(s * 0, "")
+ self.assertTrue((s * 1).__class__ is str)
+ self.assertEqual(s * 1, base)
+ self.assertTrue((s * 2).__class__ is str)
+ self.assertEqual(s * 2, base + base)
+ self.assertTrue(s[:].__class__ is str)
+ self.assertEqual(s[:], base)
+ self.assertTrue(s[0:0].__class__ is str)
+ self.assertEqual(s[0:0], "")
+ self.assertTrue(s.strip().__class__ is str)
+ self.assertEqual(s.strip(), base)
+ self.assertTrue(s.lstrip().__class__ is str)
+ self.assertEqual(s.lstrip(), base)
+ self.assertTrue(s.rstrip().__class__ is str)
+ self.assertEqual(s.rstrip(), base)
+ identitytab = ''.join([chr(i) for i in range(256)])
+ self.assertTrue(s.translate(identitytab).__class__ is str)
+ self.assertEqual(s.translate(identitytab), base)
+ self.assertTrue(s.translate(identitytab, "x").__class__ is str)
+ self.assertEqual(s.translate(identitytab, "x"), base)
+ self.assertEqual(s.translate(identitytab, "\x00"), "")
+ self.assertTrue(s.replace("x", "x").__class__ is str)
+ self.assertEqual(s.replace("x", "x"), base)
+ self.assertTrue(s.ljust(len(s)).__class__ is str)
+ self.assertEqual(s.ljust(len(s)), base)
+ self.assertTrue(s.rjust(len(s)).__class__ is str)
+ self.assertEqual(s.rjust(len(s)), base)
+ self.assertTrue(s.center(len(s)).__class__ is str)
+ self.assertEqual(s.center(len(s)), base)
+ self.assertTrue(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.assertTrue(unicode(u).__class__ is unicode)
+ self.assertEqual(hash(u), hash(base))
+ self.assertEqual({u: 1}[base], 1)
+ self.assertEqual({base: 1}[u], 1)
+ self.assertTrue(u.strip().__class__ is unicode)
+ self.assertEqual(u.strip(), base)
+ self.assertTrue(u.lstrip().__class__ is unicode)
+ self.assertEqual(u.lstrip(), base)
+ self.assertTrue(u.rstrip().__class__ is unicode)
+ self.assertEqual(u.rstrip(), base)
+ self.assertTrue(u.replace(u"x", u"x").__class__ is unicode)
+ self.assertEqual(u.replace(u"x", u"x"), base)
+ self.assertTrue(u.replace(u"xy", u"xy").__class__ is unicode)
+ self.assertEqual(u.replace(u"xy", u"xy"), base)
+ self.assertTrue(u.center(len(u)).__class__ is unicode)
+ self.assertEqual(u.center(len(u)), base)
+ self.assertTrue(u.ljust(len(u)).__class__ is unicode)
+ self.assertEqual(u.ljust(len(u)), base)
+ self.assertTrue(u.rjust(len(u)).__class__ is unicode)
+ self.assertEqual(u.rjust(len(u)), base)
+ self.assertTrue(u.lower().__class__ is unicode)
+ self.assertEqual(u.lower(), base)
+ self.assertTrue(u.upper().__class__ is unicode)
+ self.assertEqual(u.upper(), base)
+ self.assertTrue(u.capitalize().__class__ is unicode)
+ self.assertEqual(u.capitalize(), base)
+ self.assertTrue(u.title().__class__ is unicode)
+ self.assertEqual(u.title(), base)
+ self.assertTrue((u + u"").__class__ is unicode)
+ self.assertEqual(u + u"", base)
+ self.assertTrue((u"" + u).__class__ is unicode)
+ self.assertEqual(u"" + u, base)
+ self.assertTrue((u * 0).__class__ is unicode)
+ self.assertEqual(u * 0, u"")
+ self.assertTrue((u * 1).__class__ is unicode)
+ self.assertEqual(u * 1, base)
+ self.assertTrue((u * 2).__class__ is unicode)
+ self.assertEqual(u * 2, base + base)
+ self.assertTrue(u[:].__class__ is unicode)
+ self.assertEqual(u[:], base)
+ self.assertTrue(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.assertIn(cistr('ONe'), 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.assertTrue(cmp(c[x], c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
+ for op in "<", "<=", "==", "!=", ">", ">=":
+ self.assertTrue(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
+ "x=%d, y=%d" % (x, y))
+ self.assertTrue(cmp(c[x], y) == cmp(x, y), "x=%d, y=%d" % (x, y))
+ self.assertTrue(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.assertTrue(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
+ "x=%d, y=%d" % (x, y))
+ self.assertTrue(eval("c[x] %s y" % op) == eval("x %s y" % op),
+ "x=%d, y=%d" % (x, y))
+ self.assertTrue(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.assertTrue(x.__class__ is cls2)
+ x.__class__ = cls
+ self.assertTrue(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, AttributeError):
+ 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.assertTrue(x.__class__ is cls2,
+ "assigning %r as __class__ for %r silently failed" % (cls2, x))
+ self.assertEqual(x.a, 1)
+ x.__class__ = cls
+ self.assertTrue(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)
+
+ # Issue5283: when __class__ changes in __del__, the wrong
+ # type gets DECREF'd.
+ class O(object):
+ pass
+ class A(object):
+ def __del__(self):
+ self.__class__ = O
+ l = [A() for x in range(100)]
+ del l
+
+ 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
+ # (at least not any more than regular exception's __dict__ can
+ # be deleted; on CPython it is not the case, whereas on PyPy they
+ # can, just like any other new-style instance's __dict__.)
+ def can_delete_dict(e):
+ try:
+ del e.__dict__
+ except (TypeError, AttributeError):
+ return False
+ else:
+ return True
+ 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)
+ self.assertEqual(can_delete_dict(e), can_delete_dict(ValueError()))
+
+ 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.assertTrue(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.assertTrue(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()
+ class A(object):
+ pass
+ class B(A):
+ pass
+ del B
+ test_support.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
+ test_support.gc_collect()
+ 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.assertFalse(m.__dict__) # None or {} are both reasonable answers
+ 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. (On non-CPython implementations, however, __del__
+ # is typically not called again.)
+ test_support.gc_collect()
+ self.assertEqual(len(C.container), 1)
+ del C.container[-1]
+ if test_support.check_impl_detail():
+ test_support.gc_collect()
+ 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__=()
+ if test_support.check_impl_detail():
+ self.assertEqual(C.__basicsize__, B.__basicsize__)
+ self.assertTrue(hasattr(C, '__dict__'))
+ self.assertTrue(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])
+
+ try:
+ del D.__bases__
+ except (TypeError, AttributeError):
+ 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_builtin_bases(self):
+ # Make sure all the builtin types can have their base queried without
+ # segfaulting. See issue #5787.
+ builtin_types = [tp for tp in __builtin__.__dict__.itervalues()
+ if isinstance(tp, type)]
+ for tp in builtin_types:
+ object.__getattribute__(tp, "__bases__")
+ if tp is not object:
+ self.assertEqual(len(tp.__bases__), 1, tp)
+
+ class L(list):
+ pass
+
+ class C(object):
+ pass
+
+ class D(C):
+ 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__ = (C, list)
+ except TypeError:
+ pass
+ else:
+ assert 0, "best_base calculation found wanting"
+
+
+ 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
+
+ @test_support.impl_detail("testing an internal kind of method object")
+ 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.assertIsInstance(a, C) # Baseline
+ self.assertIsInstance(pa, C) # Test
+ # Test with a classic subclass
+ class D(C):
+ pass
+ a = D()
+ pa = Proxy(a)
+ self.assertIsInstance(a, C) # Baseline
+ self.assertIsInstance(pa, C) # Test
+ # Test with a new-style class
+ class C(object):
+ pass
+ a = C()
+ pa = Proxy(a)
+ self.assertIsInstance(a, C) # Baseline
+ self.assertIsInstance(pa, C) # Test
+ # Test with a new-style subclass
+ class D(C):
+ pass
+ a = D()
+ pa = Proxy(a)
+ self.assertIsInstance(a, C) # Baseline
+ self.assertIsInstance(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__ succeeded!")
+ 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...
+ test_stdout = sys.stdout
+ 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
+ finally:
+ sys.stdout = test_stdout
+
+ 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:
+ test_support.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.assertTrue(l.__add__ != [5].__add__)
+ self.assertTrue(l.__add__ != l.__mul__)
+ self.assertTrue(l.__add__.__name__ == '__add__')
+ if hasattr(l.__add__, '__self__'):
+ # CPython
+ self.assertTrue(l.__add__.__self__ is l)
+ self.assertTrue(l.__add__.__objclass__ is list)
+ else:
+ # Python implementations where [].__add__ is a normal bound method
+ self.assertTrue(l.__add__.im_self is l)
+ self.assertTrue(l.__add__.im_class 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 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_set_and_no_get(self):
+ # See
+ # http://mail.python.org/pipermail/python-dev/2010-January/095637.html
+ class Descr(object):
+
+ def __init__(self, name):
+ self.name = name
+
+ def __set__(self, obj, value):
+ obj.__dict__[self.name] = value
+ descr = Descr("a")
+
+ class X(object):
+ a = descr
+
+ x = X()
+ self.assertIs(x.a, descr)
+ x.a = 42
+ self.assertEqual(x.a, 42)
+
+ # Also check type_getattro for correctness.
+ class Meta(type):
+ pass
+ class X(object):
+ __metaclass__ = Meta
+ X.a = 42
+ Meta.a = Descr("a")
+ self.assertEqual(X.a, 42)
+
+ 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.assertEqual(descr.counter, 1)
+ self.assertRaises(AttributeError, getattr, B(), "attr")
+ self.assertEqual(descr.counter, 2)
+ self.assertRaises(AttributeError, getattr, C(), "attr")
+ self.assertEqual(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")
+
+ def test_abstractmethods(self):
+ # type pretends not to have __abstractmethods__.
+ self.assertRaises(AttributeError, getattr, type, "__abstractmethods__")
+ class meta(type):
+ pass
+ self.assertRaises(AttributeError, getattr, meta, "__abstractmethods__")
+ class X(object):
+ pass
+ with self.assertRaises(AttributeError):
+ del X.__abstractmethods__
+
+ def test_proxy_call(self):
+ class FakeStr(object):
+ __class__ = str
+
+ fake_str = FakeStr()
+ # isinstance() reads __class__ on new style classes
+ self.assertTrue(isinstance(fake_str, str))
+
+ # call a method descriptor
+ with self.assertRaises(TypeError):
+ str.split(fake_str)
+
+ # call a slot wrapper descriptor
+ with self.assertRaises(TypeError):
+ str.__add__(fake_str, "abc")
+
+
+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.assertEqual(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():
+ deprecations = [(r'complex divmod\(\), // and % are deprecated$',
+ DeprecationWarning)]
+ if sys.py3kwarning:
+ deprecations += [
+ ("classic (int|long) division", DeprecationWarning),
+ ("coerce.. not supported", DeprecationWarning),
+ (".+__(get|set|del)slice__ has been removed", DeprecationWarning)]
+ with test_support.check_warnings(*deprecations):
+ # Run all local test cases, with PTypesLongInitTest first.
+ test_support.run_unittest(PTypesLongInitTest, OperatorsTest,
+ ClassPropertiesAndMethods, DictProxyTests)
+
+if __name__ == "__main__":
+ test_main()
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