mirror of https://github.com/python/cpython
1455 lines
40 KiB
Python
1455 lines
40 KiB
Python
# Test descriptor-related enhancements
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from test_support import verify, verbose, TestFailed
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from copy import deepcopy
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def testunop(a, res, expr="len(a)", meth="__len__"):
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if verbose: print "checking", expr
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dict = {'a': a}
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verify(eval(expr, dict) == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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verify(m(a) == res)
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bm = getattr(a, meth)
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verify(bm() == res)
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def testbinop(a, b, res, expr="a+b", meth="__add__"):
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if verbose: print "checking", expr
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dict = {'a': a, 'b': b}
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verify(eval(expr, dict) == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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verify(m(a, b) == res)
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bm = getattr(a, meth)
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verify(bm(b) == res)
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def testternop(a, b, c, res, expr="a[b:c]", meth="__getslice__"):
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if verbose: print "checking", expr
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dict = {'a': a, 'b': b, 'c': c}
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verify(eval(expr, dict) == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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verify(m(a, b, c) == res)
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bm = getattr(a, meth)
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verify(bm(b, c) == res)
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def testsetop(a, b, res, stmt="a+=b", meth="__iadd__"):
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if verbose: print "checking", stmt
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dict = {'a': deepcopy(a), 'b': b}
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exec stmt in dict
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verify(dict['a'] == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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dict['a'] = deepcopy(a)
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m(dict['a'], b)
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verify(dict['a'] == res)
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dict['a'] = deepcopy(a)
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bm = getattr(dict['a'], meth)
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bm(b)
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verify(dict['a'] == res)
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def testset2op(a, b, c, res, stmt="a[b]=c", meth="__setitem__"):
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if verbose: print "checking", stmt
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dict = {'a': deepcopy(a), 'b': b, 'c': c}
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exec stmt in dict
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verify(dict['a'] == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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dict['a'] = deepcopy(a)
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m(dict['a'], b, c)
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verify(dict['a'] == res)
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dict['a'] = deepcopy(a)
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bm = getattr(dict['a'], meth)
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bm(b, c)
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verify(dict['a'] == res)
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def testset3op(a, b, c, d, res, stmt="a[b:c]=d", meth="__setslice__"):
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if verbose: print "checking", stmt
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dict = {'a': deepcopy(a), 'b': b, 'c': c, 'd': d}
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exec stmt in dict
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verify(dict['a'] == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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dict['a'] = deepcopy(a)
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m(dict['a'], b, c, d)
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verify(dict['a'] == res)
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dict['a'] = deepcopy(a)
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bm = getattr(dict['a'], meth)
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bm(b, c, d)
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verify(dict['a'] == res)
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def lists():
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if verbose: print "Testing list operations..."
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testbinop([1], [2], [1,2], "a+b", "__add__")
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testbinop([1,2,3], 2, 1, "b in a", "__contains__")
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testbinop([1,2,3], 4, 0, "b in a", "__contains__")
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testbinop([1,2,3], 1, 2, "a[b]", "__getitem__")
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testternop([1,2,3], 0, 2, [1,2], "a[b:c]", "__getslice__")
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testsetop([1], [2], [1,2], "a+=b", "__iadd__")
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testsetop([1,2], 3, [1,2,1,2,1,2], "a*=b", "__imul__")
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testunop([1,2,3], 3, "len(a)", "__len__")
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testbinop([1,2], 3, [1,2,1,2,1,2], "a*b", "__mul__")
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testbinop([1,2], 3, [1,2,1,2,1,2], "b*a", "__rmul__")
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testset2op([1,2], 1, 3, [1,3], "a[b]=c", "__setitem__")
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testset3op([1,2,3,4], 1, 3, [5,6], [1,5,6,4], "a[b:c]=d", "__setslice__")
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def dicts():
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if verbose: print "Testing dict operations..."
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testbinop({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
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testbinop({1:2,3:4}, 1, 1, "b in a", "__contains__")
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testbinop({1:2,3:4}, 2, 0, "b in a", "__contains__")
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testbinop({1:2,3:4}, 1, 2, "a[b]", "__getitem__")
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d = {1:2,3:4}
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l1 = []
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for i in d.keys(): l1.append(i)
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l = []
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for i in iter(d): l.append(i)
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verify(l == l1)
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l = []
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for i in d.__iter__(): l.append(i)
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verify(l == l1)
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l = []
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for i in dictionary.__iter__(d): l.append(i)
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verify(l == l1)
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d = {1:2, 3:4}
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testunop(d, 2, "len(a)", "__len__")
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verify(eval(repr(d), {}) == d)
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verify(eval(d.__repr__(), {}) == d)
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testset2op({1:2,3:4}, 2, 3, {1:2,2:3,3:4}, "a[b]=c", "__setitem__")
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def dict_constructor():
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if verbose:
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print "Testing dictionary constructor ..."
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d = dictionary()
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verify(d == {})
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d = dictionary({})
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verify(d == {})
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d = dictionary(mapping={})
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verify(d == {})
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d = dictionary({1: 2, 'a': 'b'})
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verify(d == {1: 2, 'a': 'b'})
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for badarg in 0, 0L, 0j, "0", [0], (0,):
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try:
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dictionary(badarg)
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except TypeError:
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pass
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else:
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raise TestFailed("no TypeError from dictionary(%r)" % badarg)
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try:
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dictionary(senseless={})
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except TypeError:
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pass
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else:
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raise TestFailed("no TypeError from dictionary(senseless={}")
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try:
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dictionary({}, {})
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except TypeError:
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pass
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else:
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raise TestFailed("no TypeError from dictionary({}, {})")
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class Mapping:
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dict = {1:2, 3:4, 'a':1j}
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def __getitem__(self, i):
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return self.dict[i]
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try:
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dictionary(Mapping())
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except TypeError:
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pass
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else:
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raise TestFailed("no TypeError from dictionary(incomplete mapping)")
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Mapping.keys = lambda self: self.dict.keys()
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d = dictionary(mapping=Mapping())
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verify(d == Mapping.dict)
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def test_dir():
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if verbose:
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print "Testing dir() ..."
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junk = 12
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verify(dir() == ['junk'])
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del junk
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# Just make sure these don't blow up!
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for arg in 2, 2L, 2j, 2e0, [2], "2", u"2", (2,), {2:2}, type, test_dir:
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dir(arg)
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# Try classic classes.
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class C:
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Cdata = 1
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def Cmethod(self): pass
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cstuff = ['Cdata', 'Cmethod', '__doc__', '__module__']
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verify(dir(C) == cstuff)
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c = C() # c.__doc__ is an odd thing to see here; ditto c.__module__.
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verify(dir(c) == cstuff)
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c.cdata = 2
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c.cmethod = lambda self: 0
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verify(dir(c) == cstuff + ['cdata', 'cmethod'])
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class A(C):
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Adata = 1
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def Amethod(self): pass
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astuff = ['Adata', 'Amethod'] + cstuff
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verify(dir(A) == astuff)
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a = A()
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verify(dir(a) == astuff)
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a.adata = 42
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a.amethod = lambda self: 3
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verify(dir(a) == astuff + ['adata', 'amethod'])
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# The same, but with new-style classes. Since these have object as a
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# base class, a lot more gets sucked in.
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def interesting(strings):
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return [s for s in strings if not s.startswith('_')]
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class C(object):
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Cdata = 1
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def Cmethod(self): pass
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cstuff = ['Cdata', 'Cmethod']
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verify(interesting(dir(C)) == cstuff)
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c = C()
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verify(interesting(dir(c)) == cstuff)
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c.cdata = 2
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c.cmethod = lambda self: 0
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verify(interesting(dir(c)) == cstuff + ['cdata', 'cmethod'])
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class A(C):
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Adata = 1
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def Amethod(self): pass
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astuff = ['Adata', 'Amethod'] + cstuff
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verify(interesting(dir(A)) == astuff)
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a = A()
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verify(interesting(dir(a)) == astuff)
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a.adata = 42
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a.amethod = lambda self: 3
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verify(interesting(dir(a)) == astuff + ['adata', 'amethod'])
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binops = {
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'add': '+',
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'sub': '-',
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'mul': '*',
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'div': '/',
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'mod': '%',
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'divmod': 'divmod',
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'pow': '**',
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'lshift': '<<',
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'rshift': '>>',
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'and': '&',
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'xor': '^',
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'or': '|',
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'cmp': 'cmp',
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'lt': '<',
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'le': '<=',
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'eq': '==',
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'ne': '!=',
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'gt': '>',
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'ge': '>=',
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}
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for name, expr in binops.items():
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if expr.islower():
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expr = expr + "(a, b)"
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else:
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expr = 'a %s b' % expr
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binops[name] = expr
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unops = {
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'pos': '+',
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'neg': '-',
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'abs': 'abs',
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'invert': '~',
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'int': 'int',
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'long': 'long',
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'float': 'float',
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'oct': 'oct',
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'hex': 'hex',
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}
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for name, expr in unops.items():
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if expr.islower():
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expr = expr + "(a)"
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else:
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expr = '%s a' % expr
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unops[name] = expr
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def numops(a, b, skip=[]):
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dict = {'a': a, 'b': b}
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for name, expr in binops.items():
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if name not in skip:
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name = "__%s__" % name
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if hasattr(a, name):
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res = eval(expr, dict)
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testbinop(a, b, res, expr, name)
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for name, expr in unops.items():
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name = "__%s__" % name
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if hasattr(a, name):
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res = eval(expr, dict)
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testunop(a, res, expr, name)
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def ints():
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if verbose: print "Testing int operations..."
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numops(100, 3)
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def longs():
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if verbose: print "Testing long operations..."
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numops(100L, 3L)
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def floats():
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if verbose: print "Testing float operations..."
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numops(100.0, 3.0)
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def complexes():
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if verbose: print "Testing complex operations..."
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numops(100.0j, 3.0j, skip=['lt', 'le', 'gt', 'ge'])
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class Number(complex):
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__slots__ = ['prec']
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def __init__(self, *args, **kwds):
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self.prec = kwds.get('prec', 12)
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def __repr__(self):
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prec = self.prec
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if self.imag == 0.0:
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return "%.*g" % (prec, self.real)
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if self.real == 0.0:
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return "%.*gj" % (prec, self.imag)
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return "(%.*g+%.*gj)" % (prec, self.real, prec, self.imag)
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__str__ = __repr__
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a = Number(3.14, prec=6)
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verify(`a` == "3.14")
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verify(a.prec == 6)
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def spamlists():
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if verbose: print "Testing spamlist operations..."
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import copy, xxsubtype as spam
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def spamlist(l, memo=None):
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import xxsubtype as spam
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return spam.spamlist(l)
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# This is an ugly hack:
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copy._deepcopy_dispatch[spam.spamlist] = spamlist
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testbinop(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+b", "__add__")
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testbinop(spamlist([1,2,3]), 2, 1, "b in a", "__contains__")
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testbinop(spamlist([1,2,3]), 4, 0, "b in a", "__contains__")
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testbinop(spamlist([1,2,3]), 1, 2, "a[b]", "__getitem__")
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testternop(spamlist([1,2,3]), 0, 2, spamlist([1,2]),
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"a[b:c]", "__getslice__")
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testsetop(spamlist([1]), spamlist([2]), spamlist([1,2]),
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"a+=b", "__iadd__")
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testsetop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*=b", "__imul__")
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testunop(spamlist([1,2,3]), 3, "len(a)", "__len__")
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testbinop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*b", "__mul__")
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testbinop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "b*a", "__rmul__")
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testset2op(spamlist([1,2]), 1, 3, spamlist([1,3]), "a[b]=c", "__setitem__")
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testset3op(spamlist([1,2,3,4]), 1, 3, spamlist([5,6]),
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spamlist([1,5,6,4]), "a[b:c]=d", "__setslice__")
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# Test subclassing
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class C(spam.spamlist):
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def foo(self): return 1
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a = C()
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verify(a == [])
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verify(a.foo() == 1)
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a.append(100)
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verify(a == [100])
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verify(a.getstate() == 0)
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a.setstate(42)
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verify(a.getstate() == 42)
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def spamdicts():
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if verbose: print "Testing spamdict operations..."
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import copy, xxsubtype as spam
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def spamdict(d, memo=None):
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import xxsubtype as spam
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sd = spam.spamdict()
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for k, v in d.items(): sd[k] = v
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return sd
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# This is an ugly hack:
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copy._deepcopy_dispatch[spam.spamdict] = spamdict
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testbinop(spamdict({1:2}), spamdict({2:1}), -1, "cmp(a,b)", "__cmp__")
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testbinop(spamdict({1:2,3:4}), 1, 1, "b in a", "__contains__")
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testbinop(spamdict({1:2,3:4}), 2, 0, "b in a", "__contains__")
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testbinop(spamdict({1:2,3:4}), 1, 2, "a[b]", "__getitem__")
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d = spamdict({1:2,3:4})
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l1 = []
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for i in d.keys(): l1.append(i)
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l = []
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for i in iter(d): l.append(i)
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verify(l == l1)
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l = []
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for i in d.__iter__(): l.append(i)
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verify(l == l1)
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l = []
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for i in type(spamdict({})).__iter__(d): l.append(i)
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verify(l == l1)
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straightd = {1:2, 3:4}
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spamd = spamdict(straightd)
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testunop(spamd, 2, "len(a)", "__len__")
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testunop(spamd, repr(straightd), "repr(a)", "__repr__")
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testset2op(spamdict({1:2,3:4}), 2, 3, spamdict({1:2,2:3,3:4}),
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"a[b]=c", "__setitem__")
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# Test subclassing
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class C(spam.spamdict):
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def foo(self): return 1
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a = C()
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verify(a.items() == [])
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verify(a.foo() == 1)
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a['foo'] = 'bar'
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verify(a.items() == [('foo', 'bar')])
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verify(a.getstate() == 0)
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a.setstate(100)
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verify(a.getstate() == 100)
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def pydicts():
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if verbose: print "Testing Python subclass of dict..."
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verify(issubclass(dictionary, dictionary))
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verify(isinstance({}, dictionary))
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d = dictionary()
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verify(d == {})
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verify(d.__class__ is dictionary)
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verify(isinstance(d, dictionary))
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class C(dictionary):
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state = -1
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def __init__(self, *a, **kw):
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if a:
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assert len(a) == 1
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self.state = a[0]
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if kw:
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for k, v in kw.items(): self[v] = k
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def __getitem__(self, key):
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return self.get(key, 0)
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def __setitem__(self, key, value):
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assert isinstance(key, type(0))
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dictionary.__setitem__(self, key, value)
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def setstate(self, state):
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self.state = state
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def getstate(self):
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return self.state
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verify(issubclass(C, dictionary))
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a1 = C(12)
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verify(a1.state == 12)
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a2 = C(foo=1, bar=2)
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verify(a2[1] == 'foo' and a2[2] == 'bar')
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a = C()
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verify(a.state == -1)
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verify(a.getstate() == -1)
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a.setstate(0)
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verify(a.state == 0)
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verify(a.getstate() == 0)
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a.setstate(10)
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verify(a.state == 10)
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verify(a.getstate() == 10)
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verify(a[42] == 0)
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a[42] = 24
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verify(a[42] == 24)
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if verbose: print "pydict stress test ..."
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N = 50
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for i in range(N):
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a[i] = C()
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for j in range(N):
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a[i][j] = i*j
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for i in range(N):
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for j in range(N):
|
|
verify(a[i][j] == i*j)
|
|
|
|
def pylists():
|
|
if verbose: print "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])
|
|
verify(a[0] == 100)
|
|
verify(a[1] == 101)
|
|
verify(a[2] == 102)
|
|
verify(a[100:200] == (100,200))
|
|
|
|
def metaclass():
|
|
if verbose: print "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()
|
|
verify(a.getstate() == 0)
|
|
a.setstate(10)
|
|
verify(a.getstate() == 10)
|
|
class D:
|
|
class __metaclass__(type):
|
|
def myself(cls): return cls
|
|
verify(D.myself() == D)
|
|
d = D()
|
|
verify(d.__class__ is D)
|
|
class M1(type):
|
|
def __new__(cls, name, bases, dict):
|
|
dict['__spam__'] = 1
|
|
return type.__new__(cls, name, bases, dict)
|
|
class C:
|
|
__metaclass__ = M1
|
|
verify(C.__spam__ == 1)
|
|
c = C()
|
|
verify(c.__spam__ == 1)
|
|
|
|
class _instance(object):
|
|
pass
|
|
class M2(object):
|
|
def __new__(cls, name, bases, dict):
|
|
self = object.__new__(cls)
|
|
self.name = name
|
|
self.bases = bases
|
|
self.dict = dict
|
|
return self
|
|
__new__ = staticmethod(__new__)
|
|
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
|
|
verify(C.name == 'C')
|
|
verify(C.bases == ())
|
|
verify('spam' in C.dict)
|
|
c = C()
|
|
verify(c.spam() == 42)
|
|
|
|
# More metaclass examples
|
|
|
|
class autosuper(type):
|
|
# Automatically add __super to the class
|
|
# This trick only works for dynamic classes
|
|
# so we force __dynamic__ = 1
|
|
def __new__(metaclass, name, bases, dict):
|
|
# XXX Should check that name isn't already a base class name
|
|
dict["__dynamic__"] = 1
|
|
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()
|
|
verify(D().meth() == "DCBA")
|
|
class E(B, C):
|
|
def meth(self):
|
|
return "E" + self.__super.meth()
|
|
verify(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()
|
|
verify(not hasattr(a, "x"))
|
|
a.x = 12
|
|
verify(a.x == 12)
|
|
verify(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()
|
|
verify(D().x == "DCBA")
|
|
|
|
def pymods():
|
|
if verbose: print "Testing Python subclass of module..."
|
|
log = []
|
|
import sys
|
|
MT = type(sys)
|
|
class MM(MT):
|
|
def __init__(self):
|
|
MT.__init__(self)
|
|
def __getattr__(self, name):
|
|
log.append(("getattr", name))
|
|
return MT.__getattr__(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.foo = 12
|
|
x = a.foo
|
|
del a.foo
|
|
verify(log == [("setattr", "foo", 12),
|
|
("getattr", "foo"),
|
|
("delattr", "foo")], log)
|
|
|
|
def multi():
|
|
if verbose: print "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()
|
|
verify(a.getstate() == 0)
|
|
a.setstate(10)
|
|
verify(a.getstate() == 10)
|
|
class D(dictionary, C):
|
|
def __init__(self):
|
|
type({}).__init__(self)
|
|
C.__init__(self)
|
|
d = D()
|
|
verify(d.keys() == [])
|
|
d["hello"] = "world"
|
|
verify(d.items() == [("hello", "world")])
|
|
verify(d["hello"] == "world")
|
|
verify(d.getstate() == 0)
|
|
d.setstate(10)
|
|
verify(d.getstate() == 10)
|
|
verify(D.__mro__ == (D, dictionary, 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"
|
|
verify(Node().__int__() == 23)
|
|
verify(int(Node()) == 23)
|
|
verify(Frag().__int__() == 42)
|
|
verify(int(Frag()) == 42)
|
|
|
|
def diamond():
|
|
if verbose: print "Testing multiple inheritance special cases..."
|
|
class A(object):
|
|
def spam(self): return "A"
|
|
verify(A().spam() == "A")
|
|
class B(A):
|
|
def boo(self): return "B"
|
|
def spam(self): return "B"
|
|
verify(B().spam() == "B")
|
|
verify(B().boo() == "B")
|
|
class C(A):
|
|
def boo(self): return "C"
|
|
verify(C().spam() == "A")
|
|
verify(C().boo() == "C")
|
|
class D(B, C): pass
|
|
verify(D().spam() == "B")
|
|
verify(D().boo() == "B")
|
|
verify(D.__mro__ == (D, B, C, A, object))
|
|
class E(C, B): pass
|
|
verify(E().spam() == "B")
|
|
verify(E().boo() == "C")
|
|
verify(E.__mro__ == (E, C, B, A, object))
|
|
class F(D, E): pass
|
|
verify(F().spam() == "B")
|
|
verify(F().boo() == "B")
|
|
verify(F.__mro__ == (F, D, E, B, C, A, object))
|
|
class G(E, D): pass
|
|
verify(G().spam() == "B")
|
|
verify(G().boo() == "C")
|
|
verify(G.__mro__ == (G, E, D, C, B, A, object))
|
|
|
|
def objects():
|
|
if verbose: print "Testing object class..."
|
|
a = object()
|
|
verify(a.__class__ == object == type(a))
|
|
b = object()
|
|
verify(a is not b)
|
|
verify(not hasattr(a, "foo"))
|
|
try:
|
|
a.foo = 12
|
|
except (AttributeError, TypeError):
|
|
pass
|
|
else:
|
|
verify(0, "object() should not allow setting a foo attribute")
|
|
verify(not hasattr(object(), "__dict__"))
|
|
|
|
class Cdict(object):
|
|
pass
|
|
x = Cdict()
|
|
verify(x.__dict__ is None)
|
|
x.foo = 1
|
|
verify(x.foo == 1)
|
|
verify(x.__dict__ == {'foo': 1})
|
|
|
|
def slots():
|
|
if verbose: print "Testing __slots__..."
|
|
class C0(object):
|
|
__slots__ = []
|
|
x = C0()
|
|
verify(not hasattr(x, "__dict__"))
|
|
verify(not hasattr(x, "foo"))
|
|
|
|
class C1(object):
|
|
__slots__ = ['a']
|
|
x = C1()
|
|
verify(not hasattr(x, "__dict__"))
|
|
verify(x.a == None)
|
|
x.a = 1
|
|
verify(x.a == 1)
|
|
del x.a
|
|
verify(x.a == None)
|
|
|
|
class C3(object):
|
|
__slots__ = ['a', 'b', 'c']
|
|
x = C3()
|
|
verify(not hasattr(x, "__dict__"))
|
|
verify(x.a is None)
|
|
verify(x.b is None)
|
|
verify(x.c is None)
|
|
x.a = 1
|
|
x.b = 2
|
|
x.c = 3
|
|
verify(x.a == 1)
|
|
verify(x.b == 2)
|
|
verify(x.c == 3)
|
|
|
|
def dynamics():
|
|
if verbose: print "Testing __dynamic__..."
|
|
verify(object.__dynamic__ == 0)
|
|
verify(list.__dynamic__ == 0)
|
|
class S1:
|
|
__metaclass__ = type
|
|
verify(S1.__dynamic__ == 0)
|
|
class S(object):
|
|
pass
|
|
verify(S.__dynamic__ == 0)
|
|
class D(object):
|
|
__dynamic__ = 1
|
|
verify(D.__dynamic__ == 1)
|
|
class E(D, S):
|
|
pass
|
|
verify(E.__dynamic__ == 1)
|
|
class F(S, D):
|
|
pass
|
|
verify(F.__dynamic__ == 1)
|
|
try:
|
|
S.foo = 1
|
|
except (AttributeError, TypeError):
|
|
pass
|
|
else:
|
|
verify(0, "assignment to a static class attribute should be illegal")
|
|
D.foo = 1
|
|
verify(D.foo == 1)
|
|
# Test that dynamic attributes are inherited
|
|
verify(E.foo == 1)
|
|
verify(F.foo == 1)
|
|
class SS(D):
|
|
__dynamic__ = 0
|
|
verify(SS.__dynamic__ == 0)
|
|
verify(SS.foo == 1)
|
|
try:
|
|
SS.foo = 1
|
|
except (AttributeError, TypeError):
|
|
pass
|
|
else:
|
|
verify(0, "assignment to SS.foo should be illegal")
|
|
# Test dynamic instances
|
|
class C(object):
|
|
__dynamic__ = 1
|
|
a = C()
|
|
verify(not hasattr(a, "foobar"))
|
|
C.foobar = 2
|
|
verify(a.foobar == 2)
|
|
C.method = lambda self: 42
|
|
verify(a.method() == 42)
|
|
C.__repr__ = lambda self: "C()"
|
|
verify(repr(a) == "C()")
|
|
C.__int__ = lambda self: 100
|
|
verify(int(a) == 100)
|
|
verify(a.foobar == 2)
|
|
verify(not hasattr(a, "spam"))
|
|
def mygetattr(self, name):
|
|
if name == "spam":
|
|
return "spam"
|
|
else:
|
|
return object.__getattr__(self, name)
|
|
C.__getattr__ = mygetattr
|
|
verify(a.spam == "spam")
|
|
a.new = 12
|
|
verify(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:
|
|
verify(0, "expected AttributeError")
|
|
verify(a.spam == "spam")
|
|
class D(C):
|
|
pass
|
|
d = D()
|
|
d.foo = 1
|
|
verify(d.foo == 1)
|
|
|
|
def errors():
|
|
if verbose: print "Testing errors..."
|
|
|
|
try:
|
|
class C(list, dictionary):
|
|
pass
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
verify(0, "inheritance from both list and dict should be illegal")
|
|
|
|
try:
|
|
class C(object, None):
|
|
pass
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
verify(0, "inheritance from non-type should be illegal")
|
|
class Classic:
|
|
pass
|
|
|
|
try:
|
|
class C(object, Classic):
|
|
pass
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
verify(0, "inheritance from object and Classic should be illegal")
|
|
|
|
try:
|
|
class C(type(len)):
|
|
pass
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
verify(0, "inheritance from CFunction should be illegal")
|
|
|
|
try:
|
|
class C(object):
|
|
__slots__ = 1
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
verify(0, "__slots__ = 1 should be illegal")
|
|
|
|
try:
|
|
class C(object):
|
|
__slots__ = [1]
|
|
except TypeError:
|
|
pass
|
|
else:
|
|
verify(0, "__slots__ = [1] should be illegal")
|
|
|
|
def classmethods():
|
|
if verbose: print "Testing class methods..."
|
|
class C(object):
|
|
def foo(*a): return a
|
|
goo = classmethod(foo)
|
|
c = C()
|
|
verify(C.goo(1) == (C, 1))
|
|
verify(c.goo(1) == (C, 1))
|
|
verify(c.foo(1) == (c, 1))
|
|
class D(C):
|
|
pass
|
|
d = D()
|
|
verify(D.goo(1) == (D, 1))
|
|
verify(d.goo(1) == (D, 1))
|
|
verify(d.foo(1) == (d, 1))
|
|
verify(D.foo(d, 1) == (d, 1))
|
|
|
|
def staticmethods():
|
|
if verbose: print "Testing static methods..."
|
|
class C(object):
|
|
def foo(*a): return a
|
|
goo = staticmethod(foo)
|
|
c = C()
|
|
verify(C.goo(1) == (1,))
|
|
verify(c.goo(1) == (1,))
|
|
verify(c.foo(1) == (c, 1,))
|
|
class D(C):
|
|
pass
|
|
d = D()
|
|
verify(D.goo(1) == (1,))
|
|
verify(d.goo(1) == (1,))
|
|
verify(d.foo(1) == (d, 1))
|
|
verify(D.foo(d, 1) == (d, 1))
|
|
|
|
def classic():
|
|
if verbose: print "Testing classic classes..."
|
|
class C:
|
|
def foo(*a): return a
|
|
goo = classmethod(foo)
|
|
c = C()
|
|
verify(C.goo(1) == (C, 1))
|
|
verify(c.goo(1) == (C, 1))
|
|
verify(c.foo(1) == (c, 1))
|
|
class D(C):
|
|
pass
|
|
d = D()
|
|
verify(D.goo(1) == (D, 1))
|
|
verify(d.goo(1) == (D, 1))
|
|
verify(d.foo(1) == (d, 1))
|
|
verify(D.foo(d, 1) == (d, 1))
|
|
class E: # *not* subclassing from C
|
|
foo = C.foo
|
|
verify(E().foo == C.foo) # i.e., unbound
|
|
verify(repr(C.foo.__get__(C())).startswith("<bound method "))
|
|
|
|
def compattr():
|
|
if verbose: print "Testing computed attributes..."
|
|
class C(object):
|
|
class computed_attribute(object):
|
|
def __init__(self, get, set=None):
|
|
self.__get = get
|
|
self.__set = set
|
|
def __get__(self, obj, type=None):
|
|
return self.__get(obj)
|
|
def __set__(self, obj, value):
|
|
return self.__set(obj, value)
|
|
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
|
|
x = computed_attribute(__get_x, __set_x)
|
|
a = C()
|
|
verify(a.x == 0)
|
|
verify(a.x == 1)
|
|
a.x = 10
|
|
verify(a.x == 10)
|
|
verify(a.x == 11)
|
|
|
|
def newslot():
|
|
if verbose: print "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()
|
|
verify(a.foo == 3)
|
|
verify(a.__class__ is C)
|
|
class D(C):
|
|
pass
|
|
b = D()
|
|
verify(b.foo == 3)
|
|
verify(b.__class__ is D)
|
|
|
|
def altmro():
|
|
if verbose: print "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
|
|
verify(D.mro() == [D, B, C, A, object] == list(D.__mro__))
|
|
verify(D().f() == "C")
|
|
class PerverseMetaType(type):
|
|
def mro(cls):
|
|
L = type.mro(cls)
|
|
L.reverse()
|
|
return L
|
|
class X(A,B,C,D):
|
|
__metaclass__ = PerverseMetaType
|
|
verify(X.__mro__ == (object, A, C, B, D, X))
|
|
verify(X().f() == "A")
|
|
|
|
def overloading():
|
|
if verbose: print "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:
|
|
return B.__getattr__(self, name)
|
|
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()
|
|
verify(a.foo == ("getattr", "foo"))
|
|
a.foo = 12
|
|
verify(a.setattr == ("foo", 12))
|
|
del a.foo
|
|
verify(a.delattr == "foo")
|
|
|
|
verify(a[12] == ("getitem", 12))
|
|
a[12] = 21
|
|
verify(a.setitem == (12, 21))
|
|
del a[12]
|
|
verify(a.delitem == 12)
|
|
|
|
verify(a[0:10] == ("getslice", 0, 10))
|
|
a[0:10] = "foo"
|
|
verify(a.setslice == (0, 10, "foo"))
|
|
del a[0:10]
|
|
verify(a.delslice == (0, 10))
|
|
|
|
def methods():
|
|
if verbose: print "Testing methods..."
|
|
class C(object):
|
|
def __init__(self, x):
|
|
self.x = x
|
|
def foo(self):
|
|
return self.x
|
|
c1 = C(1)
|
|
verify(c1.foo() == 1)
|
|
class D(C):
|
|
boo = C.foo
|
|
goo = c1.foo
|
|
d2 = D(2)
|
|
verify(d2.foo() == 2)
|
|
verify(d2.boo() == 2)
|
|
verify(d2.goo() == 1)
|
|
class E(object):
|
|
foo = C.foo
|
|
verify(E().foo == C.foo) # i.e., unbound
|
|
verify(repr(C.foo.__get__(C(1))).startswith("<bound method "))
|
|
|
|
def specials():
|
|
# Test operators like __hash__ for which a built-in default exists
|
|
if verbose: print "Testing special operators..."
|
|
# 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()
|
|
verify(not not c1)
|
|
verify(hash(c1) == id(c1))
|
|
verify(cmp(c1, c2) == cmp(id(c1), id(c2)))
|
|
verify(c1 == c1)
|
|
verify(c1 != c2)
|
|
verify(not c1 != c1)
|
|
verify(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.
|
|
verify(str(c1).find('C instance at ') >= 0)
|
|
verify(str(c1) == repr(c1))
|
|
verify(-1 not in c1)
|
|
for i in range(10):
|
|
verify(i in c1)
|
|
verify(10 not in c1)
|
|
# Test the default behavior for dynamic classes
|
|
class D(object):
|
|
__dynamic__ = 1
|
|
def __getitem__(self, i):
|
|
if 0 <= i < 10: return i
|
|
raise IndexError
|
|
d1 = D()
|
|
d2 = D()
|
|
verify(not not d1)
|
|
verify(hash(d1) == id(d1))
|
|
verify(cmp(d1, d2) == cmp(id(d1), id(d2)))
|
|
verify(d1 == d1)
|
|
verify(d1 != d2)
|
|
verify(not d1 != d1)
|
|
verify(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.
|
|
verify(str(d1).find('D instance at ') >= 0)
|
|
verify(str(d1) == repr(d1))
|
|
verify(-1 not in d1)
|
|
for i in range(10):
|
|
verify(i in d1)
|
|
verify(10 not in d1)
|
|
# Test overridden behavior for static classes
|
|
class Proxy(object):
|
|
def __init__(self, x):
|
|
self.x = x
|
|
def __nonzero__(self):
|
|
return not not self.x
|
|
def __hash__(self):
|
|
return hash(self.x)
|
|
def __eq__(self, other):
|
|
return self.x == other
|
|
def __ne__(self, other):
|
|
return self.x != other
|
|
def __cmp__(self, other):
|
|
return cmp(self.x, other.x)
|
|
def __str__(self):
|
|
return "Proxy:%s" % self.x
|
|
def __repr__(self):
|
|
return "Proxy(%r)" % self.x
|
|
def __contains__(self, value):
|
|
return value in self.x
|
|
p0 = Proxy(0)
|
|
p1 = Proxy(1)
|
|
p_1 = Proxy(-1)
|
|
verify(not p0)
|
|
verify(not not p1)
|
|
verify(hash(p0) == hash(0))
|
|
verify(p0 == p0)
|
|
verify(p0 != p1)
|
|
verify(not p0 != p0)
|
|
verify(not p0 == p1)
|
|
verify(cmp(p0, p1) == -1)
|
|
verify(cmp(p0, p0) == 0)
|
|
verify(cmp(p0, p_1) == 1)
|
|
verify(str(p0) == "Proxy:0")
|
|
verify(repr(p0) == "Proxy(0)")
|
|
p10 = Proxy(range(10))
|
|
verify(-1 not in p10)
|
|
for i in range(10):
|
|
verify(i in p10)
|
|
verify(10 not in p10)
|
|
# Test overridden behavior for dynamic classes
|
|
class DProxy(object):
|
|
__dynamic__ = 1
|
|
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)
|
|
verify(not p0)
|
|
verify(not not p1)
|
|
verify(hash(p0) == hash(0))
|
|
verify(p0 == p0)
|
|
verify(p0 != p1)
|
|
verify(not p0 != p0)
|
|
verify(not p0 == p1)
|
|
verify(cmp(p0, p1) == -1)
|
|
verify(cmp(p0, p0) == 0)
|
|
verify(cmp(p0, p_1) == 1)
|
|
verify(str(p0) == "DProxy:0")
|
|
verify(repr(p0) == "DProxy(0)")
|
|
p10 = DProxy(range(10))
|
|
verify(-1 not in p10)
|
|
for i in range(10):
|
|
verify(i in p10)
|
|
verify(10 not in p10)
|
|
|
|
def weakrefs():
|
|
if verbose: print "Testing weak references..."
|
|
import weakref
|
|
class C(object):
|
|
pass
|
|
c = C()
|
|
r = weakref.ref(c)
|
|
verify(r() is c)
|
|
del c
|
|
verify(r() is None)
|
|
del r
|
|
class NoWeak(object):
|
|
__slots__ = ['foo']
|
|
no = NoWeak()
|
|
try:
|
|
weakref.ref(no)
|
|
except TypeError, msg:
|
|
verify(str(msg).find("weakly") >= 0)
|
|
else:
|
|
verify(0, "weakref.ref(no) should be illegal")
|
|
class Weak(object):
|
|
__slots__ = ['foo', '__weakref__']
|
|
yes = Weak()
|
|
r = weakref.ref(yes)
|
|
verify(r() is yes)
|
|
del yes
|
|
verify(r() is None)
|
|
del r
|
|
|
|
def properties():
|
|
if verbose: print "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)
|
|
a = C()
|
|
verify(not hasattr(a, "x"))
|
|
a.x = 42
|
|
verify(a._C__x == 42)
|
|
verify(a.x == 42)
|
|
del a.x
|
|
verify(not hasattr(a, "x"))
|
|
verify(not hasattr(a, "_C__x"))
|
|
C.x.__set__(a, 100)
|
|
verify(C.x.__get__(a) == 100)
|
|
## C.x.__set__(a)
|
|
## verify(not hasattr(a, "x"))
|
|
|
|
def supers():
|
|
if verbose: print "Testing super..."
|
|
|
|
class A(object):
|
|
def meth(self, a):
|
|
return "A(%r)" % a
|
|
|
|
verify(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)
|
|
|
|
verify(B().meth(2) == "B(2)A(2)")
|
|
|
|
class C(A):
|
|
__dynamic__ = 1
|
|
def meth(self, a):
|
|
return "C(%r)" % a + self.__super.meth(a)
|
|
C._C__super = super(C)
|
|
|
|
verify(C().meth(3) == "C(3)A(3)")
|
|
|
|
class D(C, B):
|
|
def meth(self, a):
|
|
return "D(%r)" % a + super(D, self).meth(a)
|
|
|
|
verify (D().meth(4) == "D(4)C(4)B(4)A(4)")
|
|
|
|
def inherits():
|
|
if verbose: print "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.)
|
|
verify(repr(hexint(7) + 9) == "0x10")
|
|
verify(repr(hexint(1000) + 7) == "0x3ef")
|
|
|
|
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__
|
|
verify(str(octlong(3) + 5) == "010")
|
|
# (Note that overriding __radd__ here only seems to work
|
|
# because the example uses a short int left argument.)
|
|
verify(str(5 + octlong(3000)) == "05675")
|
|
|
|
class precfloat(float):
|
|
__slots__ = ['prec']
|
|
def __init__(self, value=0.0, prec=12):
|
|
self.prec = int(prec)
|
|
float.__init__(value)
|
|
def __repr__(self):
|
|
return "%.*g" % (self.prec, self)
|
|
verify(repr(precfloat(1.1)) == "1.1")
|
|
|
|
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))
|
|
verify(a.rev() == madtuple((0,9,8,7,6,5,4,3,2,1)))
|
|
verify(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()
|
|
verify(v == t)
|
|
|
|
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")
|
|
verify(s.rev() == madstring("zyxwvutsrqponmlkjihgfedcba"))
|
|
verify(s.rev().rev() == madstring("abcdefghijklmnopqrstuvwxyz"))
|
|
for i in range(256):
|
|
s = madstring("".join(map(chr, range(i))))
|
|
t = s.rev()
|
|
u = t.rev()
|
|
verify(u == s)
|
|
|
|
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")
|
|
verify(u.rev() == madunicode(u"FEDCBA"))
|
|
verify(u.rev().rev() == madunicode(u"ABCDEF"))
|
|
|
|
def all():
|
|
lists()
|
|
dicts()
|
|
dict_constructor()
|
|
test_dir()
|
|
ints()
|
|
longs()
|
|
floats()
|
|
complexes()
|
|
spamlists()
|
|
spamdicts()
|
|
pydicts()
|
|
pylists()
|
|
metaclass()
|
|
pymods()
|
|
multi()
|
|
diamond()
|
|
objects()
|
|
slots()
|
|
dynamics()
|
|
errors()
|
|
classmethods()
|
|
staticmethods()
|
|
classic()
|
|
compattr()
|
|
newslot()
|
|
altmro()
|
|
overloading()
|
|
methods()
|
|
specials()
|
|
weakrefs()
|
|
properties()
|
|
supers()
|
|
inherits()
|
|
|
|
all()
|
|
|
|
if verbose: print "All OK"
|