bpython/bpython/test/test_inspection.py at main · echtzeit-dev/bpython · GitHub

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import inspect

import os

import sys

import unittest

from collections.abc import Sequence

from typing import List

from bpython import inspection

from bpython.test.fodder import encoding_ascii

from bpython.test.fodder import encoding_latin1

from bpython.test.fodder import encoding_utf8

pypy = "PyPy" in sys.version

_is_py311 = sys.version_info[:2] >= (3, 11)

try:

import numpy

except ImportError:

numpy = None # type: ignore

foo_ascii_only = '''def foo():

"""Test"""

pass

'''

foo_non_ascii = '''def foo():

"""Test äöü"""

pass

'''

class Callable:

def __call__(self):

pass

class Noncallable:

pass

def spam():

pass

class CallableMethod:

def method(self):

pass

class TestInspection(unittest.TestCase):

def test_parsekeywordpairs(self):

# See issue #109

def fails(spam=["-a", "-b"]):

pass

argspec = inspection.getfuncprops("fails", fails)

self.assertIsNotNone(argspec)

defaults = argspec.argspec.defaults

self.assertEqual(str(defaults[0]), '["-a", "-b"]')

def test_pasekeywordpairs_string(self):

def spam(eggs="foo, bar"):

pass

defaults = inspection.getfuncprops("spam", spam).argspec.defaults

self.assertEqual(repr(defaults[0]), '"foo, bar"')

def test_parsekeywordpairs_multiple_keywords(self):

def spam(eggs=23, foobar="yay"):

pass

defaults = inspection.getfuncprops("spam", spam).argspec.defaults

self.assertEqual(repr(defaults[0]), "23")

self.assertEqual(repr(defaults[1]), '"yay"')

def test_pasekeywordpairs_annotation(self):

def spam(eggs: str = "foo, bar"):

pass

defaults = inspection.getfuncprops("spam", spam).argspec.defaults

self.assertEqual(repr(defaults[0]), '"foo, bar"')

def test_get_encoding_ascii(self):

self.assertEqual(inspection.get_encoding(encoding_ascii), "ascii")

self.assertEqual(inspection.get_encoding(encoding_ascii.foo), "ascii")

def test_get_encoding_latin1(self):

self.assertEqual(inspection.get_encoding(encoding_latin1), "latin1")

self.assertEqual(inspection.get_encoding(encoding_latin1.foo), "latin1")

def test_get_encoding_utf8(self):

self.assertEqual(inspection.get_encoding(encoding_utf8), "utf-8")

self.assertEqual(inspection.get_encoding(encoding_utf8.foo), "utf-8")

def test_get_source_ascii(self):

self.assertEqual(inspect.getsource(encoding_ascii.foo), foo_ascii_only)

def test_get_source_utf8(self):

self.assertEqual(inspect.getsource(encoding_utf8.foo), foo_non_ascii)

def test_get_source_latin1(self):

self.assertEqual(inspect.getsource(encoding_latin1.foo), foo_non_ascii)

def test_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")

@unittest.skipIf(pypy, "pypy builtin signatures aren't complete")

def test_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)

if _is_py311:

self.assertEqual(

repr(props.argspec.kwonly_defaults["file"]), "None"

)

else:

self.assertEqual(

repr(props.argspec.kwonly_defaults["file"]), "sys.stdout"

)

self.assertEqual(repr(props.argspec.kwonly_defaults["flush"]), "False")

@unittest.skipUnless(

numpy is not None and numpy.__version__ >= "1.18",

"requires numpy >= 1.18",

)

def test_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"])

def test_issue_966_freestanding(self):

def fun(number, lst=[]):

"""

Return a list of numbers

Example:

========

C.cmethod(1337, [1, 2]) # => [1, 2, 1337]

"""

return lst + [number]

def fun_annotations(number: int, lst: List[int] = []) -> List[int]:

"""

Return a list of numbers

Example:

========

C.cmethod(1337, [1, 2]) # => [1, 2, 1337]

"""

return lst + [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]), "[]")

def test_issue_966_class_method(self):

class Issue966(Sequence):

@classmethod

def cmethod(cls, number: int, lst: List[int] = []):

"""

Return a list of numbers

Example:

========

C.cmethod(1337, [1, 2]) # => [1, 2, 1337]

"""

return lst + [number]

@classmethod

def bmethod(cls, number, lst):

"""

Return a list of numbers

Example:

========

C.cmethod(1337, [1, 2]) # => [1, 2, 1337]

"""

return lst + [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]), "[]")

def test_issue_966_static_method(self):

class Issue966(Sequence):

@staticmethod

def cmethod(number: int, lst: List[int] = []):

"""

Return a list of numbers

Example:

========

C.cmethod(1337, [1, 2]) # => [1, 2, 1337]

"""

return lst + [number]

@staticmethod

def bmethod(number, lst):

"""

Return a list of numbers

Example:

========

C.cmethod(1337, [1, 2]) # => [1, 2, 1337]

"""

return lst + [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]), "[]")

class A:

a = "a"

class B(A):

b = "b"

class Property:

@property

def prop(self):

raise AssertionError("Property __get__ executed")

class Slots:

__slots__ = ["s1", "s2", "s3"]

class SlotsSubclass(Slots):

@property

def s4(self):

raise AssertionError("Property __get__ executed")

class OverriddenGetattr:

def __getattr__(self, attr):

raise AssertionError("custom __getattr__ executed")

a = 1

class OverriddenGetattribute:

def __getattribute__(self, attr):

raise AssertionError("custom __getattribute__ executed")

a = 1

class OverriddenMRO:

def __mro__(self):

raise AssertionError("custom mro executed")

a = 1

member_descriptor = type(Slots.s1) # type: ignore

class TestSafeGetAttribute(unittest.TestCase):

def test_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)

def test_avoid_running_properties(self):

p = Property()

self.assertEqual(inspection.getattr_safe(p, "prop"), Property.prop)

self.assertEqual(inspection.hasattr_safe(p, "prop"), True)

def test_lookup_with_slots(self):

s = Slots()

s.s1 = "s1"

self.assertEqual(inspection.getattr_safe(s, "s1"), "s1")

with self.assertRaises(AttributeError):

inspection.getattr_safe(s, "s2")

self.assertEqual(inspection.hasattr_safe(s, "s1"), True)

self.assertEqual(inspection.hasattr_safe(s, "s2"), False)

def test_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)

def test_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)

with self.assertRaises(AttributeError):

sga(OverriddenGetattr(), "b")

with self.assertRaises(AttributeError):

sga(OverriddenGetattribute(), "b")

with self.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()

bpython/bpython/test/test_inspection.py at main · echtzeit-dev/bpython · GitHub

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