def testNonExistantInstance(self): #{{{
'''No longer existing instance returns None '''
A = DummyClass
a = A()
w = CallableWrapper(a.DummyMethod)
del a
self.assert_(w._getcallable() is None)
def testNormalFunction(self): #{{{
'''Return back normal functions and unbound methods'''
_ = (lambda: None)
ub_ = method(_, None, None)
for f in (_, ub_):
cw = CallableWrapper(f)
ret = cw._getcallable()
self.assertEqual(ret, f)
def testDeadReferences(self): #{{{
'''If the reference dies, return None'''
class _(object): #{{{
def me(self): #{{{
pass
# End def #}}}
# End class #}}}
t = _()
cw = CallableWrapper(t.me, weak=True)
del t
self.assertTrue(cw._getcallable() is None)
def testMethod(self): #{{{
'''Bound and instance methods'''
class _(object): #{{{
def me(self): #{{{
pass
# End def #}}}
# End class #}}}
t1, i_ = _.me, _()
t2 = i_.me
for f in (t1, t2):
cw = CallableWrapper(f)
ret = cw._getcallable()
self.assertNotEqual(ret, f)
self.assertEqual(ret, f.im_func)
def testNonMethodCallable(self): #{{{
'''Non-method callable returns actual callable'''
w = CallableWrapper(DummyFunction)
self.assert_(w._getcallable() is DummyFunction)
def testClassInstance(self): #{{{
'''Class method callable's im_func returned'''
A = DummyClass
w = CallableWrapper(A.DummyMethod)
self.assert_(w._getcallable() is A.DummyMethod.im_func)
def testMethodInstance(self): #{{{
'''Instance method callable's im_func returned'''
A = DummyClass
a = A()
w = CallableWrapper(a.DummyMethod)
self.assert_(w._getcallable() is a.DummyMethod.im_func)
