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test_inspection.py
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361 lines (275 loc) · 10.9 KB
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importinspect
importos
importsys
importunittest
fromcollections.abcimportSequence
fromtypingimportList
frombpythonimportinspection
frombpython.test.fodderimportencoding_ascii
frombpython.test.fodderimportencoding_latin1
frombpython.test.fodderimportencoding_utf8
pypy="PyPy"insys.version
try:
importnumpy
exceptImportError:
numpy=None# type: ignore
foo_ascii_only='''def foo():
"""Test"""
pass
'''
foo_non_ascii='''def foo():
"""Test äöü"""
pass
'''
classCallable:
def__call__(self):
pass
classNoncallable:
pass
defspam():
pass
classCallableMethod:
defmethod(self):
pass
classTestInspection(unittest.TestCase):
deftest_parsekeywordpairs(self):
# See issue #109
deffails(spam=["-a","-b"]):
pass
argspec=inspection.getfuncprops("fails",fails)
self.assertIsNotNone(argspec)
defaults=argspec.argspec.defaults
self.assertEqual(str(defaults[0]),'["-a", "-b"]')
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_pasekeywordpairs_annotation(self):
defspam(eggs:str="foo, bar"):
pass
defaults=inspection.getfuncprops("spam",spam).argspec.defaults
self.assertEqual(repr(defaults[0]),'"foo, bar"')
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(inspect.getsource(encoding_ascii.foo),foo_ascii_only)
deftest_get_source_utf8(self):
self.assertEqual(inspect.getsource(encoding_utf8.foo),foo_non_ascii)
deftest_get_source_latin1(self):
self.assertEqual(inspect.getsource(encoding_latin1.foo),foo_non_ascii)
deftest_get_source_file(self):
path=os.path.join(os.path.dirname(__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")
@unittest.skipIf(pypy,"pypy builtin signatures aren't complete")
deftest_getfuncprops_print(self):
props=inspection.getfuncprops("print",print)
self.assertEqual(props.func,"print")
self.assertIn("end",props.argspec.kwonly)
self.assertIn("file",props.argspec.kwonly)
self.assertIn("flush",props.argspec.kwonly)
self.assertIn("sep",props.argspec.kwonly)
self.assertEqual(repr(props.argspec.kwonly_defaults["file"]),"None")
self.assertEqual(repr(props.argspec.kwonly_defaults["flush"]),"False")
@unittest.skipUnless(
numpyisnotNoneandnumpy.__version__>="1.18",
"requires numpy >= 1.18",
)
deftest_getfuncprops_numpy_array(self):
props=inspection.getfuncprops("array",numpy.array)
self.assertEqual(props.func,"array")
# This check might need an update in the future, but at least numpy >= 1.18 has
# np.array(object, dtype=None, *, ...).
self.assertEqual(props.argspec.args, ["object","dtype"])
deftest_issue_966_freestanding(self):
deffun(number,lst=[]):
"""
Return a list of numbers
Example:
========
C.cmethod(1337, [1, 2]) # => [1, 2, 1337]
"""
returnlst+ [number]
deffun_annotations(number:int,lst:list[int]= [])->list[int]:
"""
Return a list of numbers
Example:
========
C.cmethod(1337, [1, 2]) # => [1, 2, 1337]
"""
returnlst+ [number]
props=inspection.getfuncprops("fun",fun)
self.assertEqual(props.func,"fun")
self.assertEqual(props.argspec.args, ["number","lst"])
self.assertEqual(repr(props.argspec.defaults[0]),"[]")
props=inspection.getfuncprops("fun_annotations",fun_annotations)
self.assertEqual(props.func,"fun_annotations")
self.assertEqual(props.argspec.args, ["number","lst"])
self.assertEqual(repr(props.argspec.defaults[0]),"[]")
deftest_issue_966_class_method(self):
classIssue966(Sequence):
@classmethod
defcmethod(cls,number:int,lst:list[int]= []):
"""
Return a list of numbers
Example:
========
C.cmethod(1337, [1, 2]) # => [1, 2, 1337]
"""
returnlst+ [number]
@classmethod
defbmethod(cls,number,lst):
"""
Return a list of numbers
Example:
========
C.cmethod(1337, [1, 2]) # => [1, 2, 1337]
"""
returnlst+ [number]
props=inspection.getfuncprops(
"bmethod",inspection.getattr_safe(Issue966,"bmethod")
)
self.assertEqual(props.func,"bmethod")
self.assertEqual(props.argspec.args, ["number","lst"])
props=inspection.getfuncprops(
"cmethod",inspection.getattr_safe(Issue966,"cmethod")
)
self.assertEqual(props.func,"cmethod")
self.assertEqual(props.argspec.args, ["number","lst"])
self.assertEqual(repr(props.argspec.defaults[0]),"[]")
deftest_issue_966_static_method(self):
classIssue966(Sequence):
@staticmethod
defcmethod(number:int,lst:list[int]= []):
"""
Return a list of numbers
Example:
========
C.cmethod(1337, [1, 2]) # => [1, 2, 1337]
"""
returnlst+ [number]
@staticmethod
defbmethod(number,lst):
"""
Return a list of numbers
Example:
========
C.cmethod(1337, [1, 2]) # => [1, 2, 1337]
"""
returnlst+ [number]
props=inspection.getfuncprops(
"bmethod",inspection.getattr_safe(Issue966,"bmethod")
)
self.assertEqual(props.func,"bmethod")
self.assertEqual(props.argspec.args, ["number","lst"])
props=inspection.getfuncprops(
"cmethod",inspection.getattr_safe(Issue966,"cmethod")
)
self.assertEqual(props.func,"cmethod")
self.assertEqual(props.argspec.args, ["number","lst"])
self.assertEqual(repr(props.argspec.defaults[0]),"[]")
classA:
a="a"
classB(A):
b="b"
classProperty:
@property
defprop(self):
raiseAssertionError("Property __get__ executed")
classSlots:
__slots__= ["s1","s2","s3"]
classSlotsSubclass(Slots):
@property
defs4(self):
raiseAssertionError("Property __get__ executed")
classOverriddenGetattr:
def__getattr__(self,attr):
raiseAssertionError("custom __getattr__ executed")
a=1
classOverriddenGetattribute:
def__getattribute__(self,attr):
raiseAssertionError("custom __getattribute__ executed")
a=1
classOverriddenMRO:
def__mro__(self):
raiseAssertionError("custom mro executed")
a=1
member_descriptor=type(Slots.s1)# type: ignore
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)
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()