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test_inspection.py
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283 lines (211 loc) · 8.61 KB
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# -*- coding: utf-8 -*-
importos
frombpython._py3compatimportpy3
frombpythonimportinspection
frombpython.testimportunittest
frombpython.test.fodderimportencoding_ascii
frombpython.test.fodderimportencoding_latin1
frombpython.test.fodderimportencoding_utf8
foo_ascii_only=u'''def foo():
"""Test"""
pass
'''
foo_non_ascii=u'''def foo():
"""Test äöü"""
pass
'''
classOldCallable:
def__call__(self):
pass
classCallable(object):
def__call__(self):
pass
classOldNoncallable:
pass
classNoncallable(object):
pass
defspam():
pass
classCallableMethod(object):
defmethod(self):
pass
classTestInspection(unittest.TestCase):
deftest_is_callable(self):
self.assertTrue(inspection.is_callable(spam))
self.assertTrue(inspection.is_callable(Callable))
self.assertTrue(inspection.is_callable(Callable()))
self.assertTrue(inspection.is_callable(OldCallable))
self.assertTrue(inspection.is_callable(OldCallable()))
self.assertFalse(inspection.is_callable(Noncallable()))
self.assertFalse(inspection.is_callable(OldNoncallable()))
self.assertFalse(inspection.is_callable(None))
self.assertTrue(inspection.is_callable(CallableMethod().method))
@unittest.skipIf(py3,"old-style classes only exist in Python 2")
deftest_is_new_style_py2(self):
self.assertTrue(inspection.is_new_style(spam))
self.assertTrue(inspection.is_new_style(Noncallable))
self.assertFalse(inspection.is_new_style(OldNoncallable))
self.assertTrue(inspection.is_new_style(Noncallable()))
self.assertFalse(inspection.is_new_style(OldNoncallable()))
self.assertTrue(inspection.is_new_style(None))
@unittest.skipUnless(py3,"only in Python 3 are all classes new-style")
deftest_is_new_style_py3(self):
self.assertTrue(inspection.is_new_style(spam))
self.assertTrue(inspection.is_new_style(Noncallable))
self.assertTrue(inspection.is_new_style(OldNoncallable))
self.assertTrue(inspection.is_new_style(Noncallable()))
self.assertTrue(inspection.is_new_style(OldNoncallable()))
self.assertTrue(inspection.is_new_style(None))
deftest_parsekeywordpairs(self):
# See issue #109
deffails(spam=["-a","-b"]):
pass
default_arg_repr="['-a', '-b']"
self.assertEqual(
str(["-a","-b"]),
default_arg_repr,
"This test is broken (repr does not match), fix me.",
)
argspec=inspection.getfuncprops("fails",fails)
defaults=argspec.argspec.defaults
self.assertEqual(str(defaults[0]),default_arg_repr)
deftest_pasekeywordpairs_string(self):
defspam(eggs="foo, bar"):
pass
defaults=inspection.getfuncprops("spam",spam).argspec.defaults
self.assertEqual(repr(defaults[0]),"'foo, bar'")
deftest_parsekeywordpairs_multiple_keywords(self):
defspam(eggs=23,foobar="yay"):
pass
defaults=inspection.getfuncprops("spam",spam).argspec.defaults
self.assertEqual(repr(defaults[0]),"23")
self.assertEqual(repr(defaults[1]),"'yay'")
deftest_get_encoding_ascii(self):
self.assertEqual(inspection.get_encoding(encoding_ascii),"ascii")
self.assertEqual(inspection.get_encoding(encoding_ascii.foo),"ascii")
deftest_get_encoding_latin1(self):
self.assertEqual(inspection.get_encoding(encoding_latin1),"latin1")
self.assertEqual(inspection.get_encoding(encoding_latin1.foo),"latin1")
deftest_get_encoding_utf8(self):
self.assertEqual(inspection.get_encoding(encoding_utf8),"utf-8")
self.assertEqual(inspection.get_encoding(encoding_utf8.foo),"utf-8")
deftest_get_source_ascii(self):
self.assertEqual(
inspection.get_source_unicode(encoding_ascii.foo),foo_ascii_only
)
deftest_get_source_utf8(self):
self.assertEqual(
inspection.get_source_unicode(encoding_utf8.foo),foo_non_ascii
)
deftest_get_source_latin1(self):
self.assertEqual(
inspection.get_source_unicode(encoding_latin1.foo),foo_non_ascii
)
deftest_get_source_file(self):
path=os.path.join(
os.path.dirname(os.path.abspath(__file__)),"fodder"
)
encoding=inspection.get_encoding_file(
os.path.join(path,"encoding_ascii.py")
)
self.assertEqual(encoding,"ascii")
encoding=inspection.get_encoding_file(
os.path.join(path,"encoding_latin1.py")
)
self.assertEqual(encoding,"latin1")
encoding=inspection.get_encoding_file(
os.path.join(path,"encoding_utf8.py")
)
self.assertEqual(encoding,"utf-8")
classA(object):
a="a"
classB(A):
b="b"
classProperty(object):
@property
defprop(self):
raiseAssertionError("Property __get__ executed")
classSlots(object):
__slots__= ["s1","s2","s3"]
ifnotpy3:
@property
defs3(self):
raiseAssertionError("Property __get__ executed")
classSlotsSubclass(Slots):
@property
defs4(self):
raiseAssertionError("Property __get__ executed")
classOverriddenGetattr(object):
def__getattr__(self,attr):
raiseAssertionError("custom __getattr__ executed")
a=1
classOverriddenGetattribute(object):
def__getattribute__(self,attr):
raiseAssertionError("custom __getattribute__ executed")
a=1
classOverriddenMRO(object):
def__mro__(self):
raiseAssertionError("custom mro executed")
a=1
member_descriptor=type(Slots.s1)
classTestSafeGetAttribute(unittest.TestCase):
deftest_lookup_on_object(self):
a=A()
a.x=1
self.assertEqual(inspection.getattr_safe(a,"x"),1)
self.assertEqual(inspection.getattr_safe(a,"a"),"a")
b=B()
b.y=2
self.assertEqual(inspection.getattr_safe(b,"y"),2)
self.assertEqual(inspection.getattr_safe(b,"a"),"a")
self.assertEqual(inspection.getattr_safe(b,"b"),"b")
self.assertEqual(inspection.hasattr_safe(b,"y"),True)
self.assertEqual(inspection.hasattr_safe(b,"b"),True)
deftest_avoid_running_properties(self):
p=Property()
self.assertEqual(inspection.getattr_safe(p,"prop"),Property.prop)
self.assertEqual(inspection.hasattr_safe(p,"prop"),True)
deftest_lookup_with_slots(self):
s=Slots()
s.s1="s1"
self.assertEqual(inspection.getattr_safe(s,"s1"),"s1")
withself.assertRaises(AttributeError):
inspection.getattr_safe(s,"s2")
self.assertEqual(inspection.hasattr_safe(s,"s1"),True)
self.assertEqual(inspection.hasattr_safe(s,"s2"),False)
deftest_lookup_on_slots_classes(self):
sga=inspection.getattr_safe
s=SlotsSubclass()
self.assertIsInstance(sga(Slots,"s1"),member_descriptor)
self.assertIsInstance(sga(SlotsSubclass,"s1"),member_descriptor)
self.assertIsInstance(sga(SlotsSubclass,"s4"),property)
self.assertIsInstance(sga(s,"s4"),property)
self.assertEqual(inspection.hasattr_safe(s,"s1"),False)
self.assertEqual(inspection.hasattr_safe(s,"s4"),True)
@unittest.skipIf(py3,"Py 3 doesn't allow slots and prop in same class")
deftest_lookup_with_property_and_slots(self):
sga=inspection.getattr_safe
s=SlotsSubclass()
self.assertIsInstance(sga(Slots,"s3"),property)
self.assertEqual(inspection.getattr_safe(s,"s3"),Slots.__dict__["s3"])
self.assertIsInstance(sga(SlotsSubclass,"s3"),property)
deftest_lookup_on_overridden_methods(self):
sga=inspection.getattr_safe
self.assertEqual(sga(OverriddenGetattr(),"a"),1)
self.assertEqual(sga(OverriddenGetattribute(),"a"),1)
self.assertEqual(sga(OverriddenMRO(),"a"),1)
withself.assertRaises(AttributeError):
sga(OverriddenGetattr(),"b")
withself.assertRaises(AttributeError):
sga(OverriddenGetattribute(),"b")
withself.assertRaises(AttributeError):
sga(OverriddenMRO(),"b")
self.assertEqual(
inspection.hasattr_safe(OverriddenGetattr(),"b"),False
)
self.assertEqual(
inspection.hasattr_safe(OverriddenGetattribute(),"b"),False
)
self.assertEqual(inspection.hasattr_safe(OverriddenMRO(),"b"),False)
if__name__=="__main__":
unittest.main()