mirror of
https://github.com/python/cpython.git
synced 2025-07-19 01:05:26 +00:00
f9169ce6b4
Some objects (like test mocks) auto-generate new objects on attribute access, which can lead to an infinite loop in inspect.unwrap(). Ensuring references are retained to otherwise temporary objects and capping the size of the memo dict turns this case into a conventional exception instead.
3722 lines
140 KiB
Python
3722 lines
140 KiB
Python
import builtins
|
|
import collections
|
|
import datetime
|
|
import functools
|
|
import importlib
|
|
import inspect
|
|
import io
|
|
import linecache
|
|
import os
|
|
from os.path import normcase
|
|
import _pickle
|
|
import pickle
|
|
import shutil
|
|
import sys
|
|
import types
|
|
import textwrap
|
|
import unicodedata
|
|
import unittest
|
|
import unittest.mock
|
|
import warnings
|
|
|
|
try:
|
|
from concurrent.futures import ThreadPoolExecutor
|
|
except ImportError:
|
|
ThreadPoolExecutor = None
|
|
|
|
from test.support import run_unittest, TESTFN, DirsOnSysPath, cpython_only
|
|
from test.support import MISSING_C_DOCSTRINGS, cpython_only
|
|
from test.support.script_helper import assert_python_ok, assert_python_failure
|
|
from test import inspect_fodder as mod
|
|
from test import inspect_fodder2 as mod2
|
|
from test import support
|
|
|
|
from test.test_import import _ready_to_import
|
|
|
|
|
|
# Functions tested in this suite:
|
|
# ismodule, isclass, ismethod, isfunction, istraceback, isframe, iscode,
|
|
# isbuiltin, isroutine, isgenerator, isgeneratorfunction, getmembers,
|
|
# getdoc, getfile, getmodule, getsourcefile, getcomments, getsource,
|
|
# getclasstree, getargvalues, formatargspec, formatargvalues,
|
|
# currentframe, stack, trace, isdatadescriptor
|
|
|
|
# NOTE: There are some additional tests relating to interaction with
|
|
# zipimport in the test_zipimport_support test module.
|
|
|
|
modfile = mod.__file__
|
|
if modfile.endswith(('c', 'o')):
|
|
modfile = modfile[:-1]
|
|
|
|
# Normalize file names: on Windows, the case of file names of compiled
|
|
# modules depends on the path used to start the python executable.
|
|
modfile = normcase(modfile)
|
|
|
|
def revise(filename, *args):
|
|
return (normcase(filename),) + args
|
|
|
|
git = mod.StupidGit()
|
|
|
|
class IsTestBase(unittest.TestCase):
|
|
predicates = set([inspect.isbuiltin, inspect.isclass, inspect.iscode,
|
|
inspect.isframe, inspect.isfunction, inspect.ismethod,
|
|
inspect.ismodule, inspect.istraceback,
|
|
inspect.isgenerator, inspect.isgeneratorfunction,
|
|
inspect.iscoroutine, inspect.iscoroutinefunction,
|
|
inspect.isasyncgen, inspect.isasyncgenfunction])
|
|
|
|
def istest(self, predicate, exp):
|
|
obj = eval(exp)
|
|
self.assertTrue(predicate(obj), '%s(%s)' % (predicate.__name__, exp))
|
|
|
|
for other in self.predicates - set([predicate]):
|
|
if (predicate == inspect.isgeneratorfunction or \
|
|
predicate == inspect.isasyncgenfunction or \
|
|
predicate == inspect.iscoroutinefunction) and \
|
|
other == inspect.isfunction:
|
|
continue
|
|
self.assertFalse(other(obj), 'not %s(%s)' % (other.__name__, exp))
|
|
|
|
def generator_function_example(self):
|
|
for i in range(2):
|
|
yield i
|
|
|
|
async def async_generator_function_example(self):
|
|
async for i in range(2):
|
|
yield i
|
|
|
|
async def coroutine_function_example(self):
|
|
return 'spam'
|
|
|
|
@types.coroutine
|
|
def gen_coroutine_function_example(self):
|
|
yield
|
|
return 'spam'
|
|
|
|
class EqualsToAll:
|
|
def __eq__(self, other):
|
|
return True
|
|
|
|
class TestPredicates(IsTestBase):
|
|
|
|
def test_excluding_predicates(self):
|
|
global tb
|
|
self.istest(inspect.isbuiltin, 'sys.exit')
|
|
self.istest(inspect.isbuiltin, '[].append')
|
|
self.istest(inspect.iscode, 'mod.spam.__code__')
|
|
try:
|
|
1/0
|
|
except:
|
|
tb = sys.exc_info()[2]
|
|
self.istest(inspect.isframe, 'tb.tb_frame')
|
|
self.istest(inspect.istraceback, 'tb')
|
|
if hasattr(types, 'GetSetDescriptorType'):
|
|
self.istest(inspect.isgetsetdescriptor,
|
|
'type(tb.tb_frame).f_locals')
|
|
else:
|
|
self.assertFalse(inspect.isgetsetdescriptor(type(tb.tb_frame).f_locals))
|
|
finally:
|
|
# Clear traceback and all the frames and local variables hanging to it.
|
|
tb = None
|
|
self.istest(inspect.isfunction, 'mod.spam')
|
|
self.istest(inspect.isfunction, 'mod.StupidGit.abuse')
|
|
self.istest(inspect.ismethod, 'git.argue')
|
|
self.istest(inspect.ismodule, 'mod')
|
|
self.istest(inspect.isdatadescriptor, 'collections.defaultdict.default_factory')
|
|
self.istest(inspect.isgenerator, '(x for x in range(2))')
|
|
self.istest(inspect.isgeneratorfunction, 'generator_function_example')
|
|
self.istest(inspect.isasyncgen,
|
|
'async_generator_function_example(1)')
|
|
self.istest(inspect.isasyncgenfunction,
|
|
'async_generator_function_example')
|
|
|
|
with warnings.catch_warnings():
|
|
warnings.simplefilter("ignore")
|
|
self.istest(inspect.iscoroutine, 'coroutine_function_example(1)')
|
|
self.istest(inspect.iscoroutinefunction, 'coroutine_function_example')
|
|
|
|
if hasattr(types, 'MemberDescriptorType'):
|
|
self.istest(inspect.ismemberdescriptor, 'datetime.timedelta.days')
|
|
else:
|
|
self.assertFalse(inspect.ismemberdescriptor(datetime.timedelta.days))
|
|
|
|
def test_iscoroutine(self):
|
|
gen_coro = gen_coroutine_function_example(1)
|
|
coro = coroutine_function_example(1)
|
|
|
|
self.assertFalse(
|
|
inspect.iscoroutinefunction(gen_coroutine_function_example))
|
|
self.assertFalse(inspect.iscoroutine(gen_coro))
|
|
|
|
self.assertTrue(
|
|
inspect.isgeneratorfunction(gen_coroutine_function_example))
|
|
self.assertTrue(inspect.isgenerator(gen_coro))
|
|
|
|
self.assertTrue(
|
|
inspect.iscoroutinefunction(coroutine_function_example))
|
|
self.assertTrue(inspect.iscoroutine(coro))
|
|
|
|
self.assertFalse(
|
|
inspect.isgeneratorfunction(coroutine_function_example))
|
|
self.assertFalse(inspect.isgenerator(coro))
|
|
|
|
coro.close(); gen_coro.close() # silence warnings
|
|
|
|
def test_isawaitable(self):
|
|
def gen(): yield
|
|
self.assertFalse(inspect.isawaitable(gen()))
|
|
|
|
coro = coroutine_function_example(1)
|
|
gen_coro = gen_coroutine_function_example(1)
|
|
|
|
self.assertTrue(inspect.isawaitable(coro))
|
|
self.assertTrue(inspect.isawaitable(gen_coro))
|
|
|
|
class Future:
|
|
def __await__():
|
|
pass
|
|
self.assertTrue(inspect.isawaitable(Future()))
|
|
self.assertFalse(inspect.isawaitable(Future))
|
|
|
|
class NotFuture: pass
|
|
not_fut = NotFuture()
|
|
not_fut.__await__ = lambda: None
|
|
self.assertFalse(inspect.isawaitable(not_fut))
|
|
|
|
coro.close(); gen_coro.close() # silence warnings
|
|
|
|
def test_isroutine(self):
|
|
self.assertTrue(inspect.isroutine(mod.spam))
|
|
self.assertTrue(inspect.isroutine([].count))
|
|
|
|
def test_isclass(self):
|
|
self.istest(inspect.isclass, 'mod.StupidGit')
|
|
self.assertTrue(inspect.isclass(list))
|
|
|
|
class CustomGetattr(object):
|
|
def __getattr__(self, attr):
|
|
return None
|
|
self.assertFalse(inspect.isclass(CustomGetattr()))
|
|
|
|
def test_get_slot_members(self):
|
|
class C(object):
|
|
__slots__ = ("a", "b")
|
|
x = C()
|
|
x.a = 42
|
|
members = dict(inspect.getmembers(x))
|
|
self.assertIn('a', members)
|
|
self.assertNotIn('b', members)
|
|
|
|
def test_isabstract(self):
|
|
from abc import ABCMeta, abstractmethod
|
|
|
|
class AbstractClassExample(metaclass=ABCMeta):
|
|
|
|
@abstractmethod
|
|
def foo(self):
|
|
pass
|
|
|
|
class ClassExample(AbstractClassExample):
|
|
def foo(self):
|
|
pass
|
|
|
|
a = ClassExample()
|
|
|
|
# Test general behaviour.
|
|
self.assertTrue(inspect.isabstract(AbstractClassExample))
|
|
self.assertFalse(inspect.isabstract(ClassExample))
|
|
self.assertFalse(inspect.isabstract(a))
|
|
self.assertFalse(inspect.isabstract(int))
|
|
self.assertFalse(inspect.isabstract(5))
|
|
|
|
def test_isabstract_during_init_subclass(self):
|
|
from abc import ABCMeta, abstractmethod
|
|
isabstract_checks = []
|
|
class AbstractChecker(metaclass=ABCMeta):
|
|
def __init_subclass__(cls):
|
|
isabstract_checks.append(inspect.isabstract(cls))
|
|
class AbstractClassExample(AbstractChecker):
|
|
@abstractmethod
|
|
def foo(self):
|
|
pass
|
|
class ClassExample(AbstractClassExample):
|
|
def foo(self):
|
|
pass
|
|
self.assertEqual(isabstract_checks, [True, False])
|
|
|
|
isabstract_checks.clear()
|
|
class AbstractChild(AbstractClassExample):
|
|
pass
|
|
class AbstractGrandchild(AbstractChild):
|
|
pass
|
|
class ConcreteGrandchild(ClassExample):
|
|
pass
|
|
self.assertEqual(isabstract_checks, [True, True, False])
|
|
|
|
|
|
class TestInterpreterStack(IsTestBase):
|
|
def __init__(self, *args, **kwargs):
|
|
unittest.TestCase.__init__(self, *args, **kwargs)
|
|
|
|
git.abuse(7, 8, 9)
|
|
|
|
def test_abuse_done(self):
|
|
self.istest(inspect.istraceback, 'git.ex[2]')
|
|
self.istest(inspect.isframe, 'mod.fr')
|
|
|
|
def test_stack(self):
|
|
self.assertTrue(len(mod.st) >= 5)
|
|
self.assertEqual(revise(*mod.st[0][1:]),
|
|
(modfile, 16, 'eggs', [' st = inspect.stack()\n'], 0))
|
|
self.assertEqual(revise(*mod.st[1][1:]),
|
|
(modfile, 9, 'spam', [' eggs(b + d, c + f)\n'], 0))
|
|
self.assertEqual(revise(*mod.st[2][1:]),
|
|
(modfile, 43, 'argue', [' spam(a, b, c)\n'], 0))
|
|
self.assertEqual(revise(*mod.st[3][1:]),
|
|
(modfile, 39, 'abuse', [' self.argue(a, b, c)\n'], 0))
|
|
# Test named tuple fields
|
|
record = mod.st[0]
|
|
self.assertIs(record.frame, mod.fr)
|
|
self.assertEqual(record.lineno, 16)
|
|
self.assertEqual(record.filename, mod.__file__)
|
|
self.assertEqual(record.function, 'eggs')
|
|
self.assertIn('inspect.stack()', record.code_context[0])
|
|
self.assertEqual(record.index, 0)
|
|
|
|
def test_trace(self):
|
|
self.assertEqual(len(git.tr), 3)
|
|
self.assertEqual(revise(*git.tr[0][1:]),
|
|
(modfile, 43, 'argue', [' spam(a, b, c)\n'], 0))
|
|
self.assertEqual(revise(*git.tr[1][1:]),
|
|
(modfile, 9, 'spam', [' eggs(b + d, c + f)\n'], 0))
|
|
self.assertEqual(revise(*git.tr[2][1:]),
|
|
(modfile, 18, 'eggs', [' q = y / 0\n'], 0))
|
|
|
|
def test_frame(self):
|
|
args, varargs, varkw, locals = inspect.getargvalues(mod.fr)
|
|
self.assertEqual(args, ['x', 'y'])
|
|
self.assertEqual(varargs, None)
|
|
self.assertEqual(varkw, None)
|
|
self.assertEqual(locals, {'x': 11, 'p': 11, 'y': 14})
|
|
self.assertEqual(inspect.formatargvalues(args, varargs, varkw, locals),
|
|
'(x=11, y=14)')
|
|
|
|
def test_previous_frame(self):
|
|
args, varargs, varkw, locals = inspect.getargvalues(mod.fr.f_back)
|
|
self.assertEqual(args, ['a', 'b', 'c', 'd', 'e', 'f'])
|
|
self.assertEqual(varargs, 'g')
|
|
self.assertEqual(varkw, 'h')
|
|
self.assertEqual(inspect.formatargvalues(args, varargs, varkw, locals),
|
|
'(a=7, b=8, c=9, d=3, e=4, f=5, *g=(), **h={})')
|
|
|
|
class GetSourceBase(unittest.TestCase):
|
|
# Subclasses must override.
|
|
fodderModule = None
|
|
|
|
def setUp(self):
|
|
with open(inspect.getsourcefile(self.fodderModule)) as fp:
|
|
self.source = fp.read()
|
|
|
|
def sourcerange(self, top, bottom):
|
|
lines = self.source.split("\n")
|
|
return "\n".join(lines[top-1:bottom]) + "\n"
|
|
|
|
def assertSourceEqual(self, obj, top, bottom):
|
|
self.assertEqual(inspect.getsource(obj),
|
|
self.sourcerange(top, bottom))
|
|
|
|
class TestRetrievingSourceCode(GetSourceBase):
|
|
fodderModule = mod
|
|
|
|
def test_getclasses(self):
|
|
classes = inspect.getmembers(mod, inspect.isclass)
|
|
self.assertEqual(classes,
|
|
[('FesteringGob', mod.FesteringGob),
|
|
('MalodorousPervert', mod.MalodorousPervert),
|
|
('ParrotDroppings', mod.ParrotDroppings),
|
|
('StupidGit', mod.StupidGit),
|
|
('Tit', mod.MalodorousPervert),
|
|
])
|
|
tree = inspect.getclasstree([cls[1] for cls in classes])
|
|
self.assertEqual(tree,
|
|
[(object, ()),
|
|
[(mod.ParrotDroppings, (object,)),
|
|
[(mod.FesteringGob, (mod.MalodorousPervert,
|
|
mod.ParrotDroppings))
|
|
],
|
|
(mod.StupidGit, (object,)),
|
|
[(mod.MalodorousPervert, (mod.StupidGit,)),
|
|
[(mod.FesteringGob, (mod.MalodorousPervert,
|
|
mod.ParrotDroppings))
|
|
]
|
|
]
|
|
]
|
|
])
|
|
tree = inspect.getclasstree([cls[1] for cls in classes], True)
|
|
self.assertEqual(tree,
|
|
[(object, ()),
|
|
[(mod.ParrotDroppings, (object,)),
|
|
(mod.StupidGit, (object,)),
|
|
[(mod.MalodorousPervert, (mod.StupidGit,)),
|
|
[(mod.FesteringGob, (mod.MalodorousPervert,
|
|
mod.ParrotDroppings))
|
|
]
|
|
]
|
|
]
|
|
])
|
|
|
|
def test_getfunctions(self):
|
|
functions = inspect.getmembers(mod, inspect.isfunction)
|
|
self.assertEqual(functions, [('eggs', mod.eggs),
|
|
('lobbest', mod.lobbest),
|
|
('spam', mod.spam)])
|
|
|
|
@unittest.skipIf(sys.flags.optimize >= 2,
|
|
"Docstrings are omitted with -O2 and above")
|
|
def test_getdoc(self):
|
|
self.assertEqual(inspect.getdoc(mod), 'A module docstring.')
|
|
self.assertEqual(inspect.getdoc(mod.StupidGit),
|
|
'A longer,\n\nindented\n\ndocstring.')
|
|
self.assertEqual(inspect.getdoc(git.abuse),
|
|
'Another\n\ndocstring\n\ncontaining\n\ntabs')
|
|
|
|
@unittest.skipIf(sys.flags.optimize >= 2,
|
|
"Docstrings are omitted with -O2 and above")
|
|
def test_getdoc_inherited(self):
|
|
self.assertEqual(inspect.getdoc(mod.FesteringGob),
|
|
'A longer,\n\nindented\n\ndocstring.')
|
|
self.assertEqual(inspect.getdoc(mod.FesteringGob.abuse),
|
|
'Another\n\ndocstring\n\ncontaining\n\ntabs')
|
|
self.assertEqual(inspect.getdoc(mod.FesteringGob().abuse),
|
|
'Another\n\ndocstring\n\ncontaining\n\ntabs')
|
|
self.assertEqual(inspect.getdoc(mod.FesteringGob.contradiction),
|
|
'The automatic gainsaying.')
|
|
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS, "test requires docstrings")
|
|
def test_finddoc(self):
|
|
finddoc = inspect._finddoc
|
|
self.assertEqual(finddoc(int), int.__doc__)
|
|
self.assertEqual(finddoc(int.to_bytes), int.to_bytes.__doc__)
|
|
self.assertEqual(finddoc(int().to_bytes), int.to_bytes.__doc__)
|
|
self.assertEqual(finddoc(int.from_bytes), int.from_bytes.__doc__)
|
|
self.assertEqual(finddoc(int.real), int.real.__doc__)
|
|
|
|
def test_cleandoc(self):
|
|
self.assertEqual(inspect.cleandoc('An\n indented\n docstring.'),
|
|
'An\nindented\ndocstring.')
|
|
|
|
def test_getcomments(self):
|
|
self.assertEqual(inspect.getcomments(mod), '# line 1\n')
|
|
self.assertEqual(inspect.getcomments(mod.StupidGit), '# line 20\n')
|
|
# If the object source file is not available, return None.
|
|
co = compile('x=1', '_non_existing_filename.py', 'exec')
|
|
self.assertIsNone(inspect.getcomments(co))
|
|
# If the object has been defined in C, return None.
|
|
self.assertIsNone(inspect.getcomments(list))
|
|
|
|
def test_getmodule(self):
|
|
# Check actual module
|
|
self.assertEqual(inspect.getmodule(mod), mod)
|
|
# Check class (uses __module__ attribute)
|
|
self.assertEqual(inspect.getmodule(mod.StupidGit), mod)
|
|
# Check a method (no __module__ attribute, falls back to filename)
|
|
self.assertEqual(inspect.getmodule(mod.StupidGit.abuse), mod)
|
|
# Do it again (check the caching isn't broken)
|
|
self.assertEqual(inspect.getmodule(mod.StupidGit.abuse), mod)
|
|
# Check a builtin
|
|
self.assertEqual(inspect.getmodule(str), sys.modules["builtins"])
|
|
# Check filename override
|
|
self.assertEqual(inspect.getmodule(None, modfile), mod)
|
|
|
|
def test_getframeinfo_get_first_line(self):
|
|
frame_info = inspect.getframeinfo(self.fodderModule.fr, 50)
|
|
self.assertEqual(frame_info.code_context[0], "# line 1\n")
|
|
self.assertEqual(frame_info.code_context[1], "'A module docstring.'\n")
|
|
|
|
def test_getsource(self):
|
|
self.assertSourceEqual(git.abuse, 29, 39)
|
|
self.assertSourceEqual(mod.StupidGit, 21, 51)
|
|
self.assertSourceEqual(mod.lobbest, 75, 76)
|
|
|
|
def test_getsourcefile(self):
|
|
self.assertEqual(normcase(inspect.getsourcefile(mod.spam)), modfile)
|
|
self.assertEqual(normcase(inspect.getsourcefile(git.abuse)), modfile)
|
|
fn = "_non_existing_filename_used_for_sourcefile_test.py"
|
|
co = compile("x=1", fn, "exec")
|
|
self.assertEqual(inspect.getsourcefile(co), None)
|
|
linecache.cache[co.co_filename] = (1, None, "None", co.co_filename)
|
|
try:
|
|
self.assertEqual(normcase(inspect.getsourcefile(co)), fn)
|
|
finally:
|
|
del linecache.cache[co.co_filename]
|
|
|
|
def test_getfile(self):
|
|
self.assertEqual(inspect.getfile(mod.StupidGit), mod.__file__)
|
|
|
|
def test_getfile_class_without_module(self):
|
|
class CM(type):
|
|
@property
|
|
def __module__(cls):
|
|
raise AttributeError
|
|
class C(metaclass=CM):
|
|
pass
|
|
with self.assertRaises(TypeError):
|
|
inspect.getfile(C)
|
|
|
|
def test_getmodule_recursion(self):
|
|
from types import ModuleType
|
|
name = '__inspect_dummy'
|
|
m = sys.modules[name] = ModuleType(name)
|
|
m.__file__ = "<string>" # hopefully not a real filename...
|
|
m.__loader__ = "dummy" # pretend the filename is understood by a loader
|
|
exec("def x(): pass", m.__dict__)
|
|
self.assertEqual(inspect.getsourcefile(m.x.__code__), '<string>')
|
|
del sys.modules[name]
|
|
inspect.getmodule(compile('a=10','','single'))
|
|
|
|
def test_proceed_with_fake_filename(self):
|
|
'''doctest monkeypatches linecache to enable inspection'''
|
|
fn, source = '<test>', 'def x(): pass\n'
|
|
getlines = linecache.getlines
|
|
def monkey(filename, module_globals=None):
|
|
if filename == fn:
|
|
return source.splitlines(keepends=True)
|
|
else:
|
|
return getlines(filename, module_globals)
|
|
linecache.getlines = monkey
|
|
try:
|
|
ns = {}
|
|
exec(compile(source, fn, 'single'), ns)
|
|
inspect.getsource(ns["x"])
|
|
finally:
|
|
linecache.getlines = getlines
|
|
|
|
def test_getsource_on_code_object(self):
|
|
self.assertSourceEqual(mod.eggs.__code__, 12, 18)
|
|
|
|
class TestDecorators(GetSourceBase):
|
|
fodderModule = mod2
|
|
|
|
def test_wrapped_decorator(self):
|
|
self.assertSourceEqual(mod2.wrapped, 14, 17)
|
|
|
|
def test_replacing_decorator(self):
|
|
self.assertSourceEqual(mod2.gone, 9, 10)
|
|
|
|
def test_getsource_unwrap(self):
|
|
self.assertSourceEqual(mod2.real, 130, 132)
|
|
|
|
def test_decorator_with_lambda(self):
|
|
self.assertSourceEqual(mod2.func114, 113, 115)
|
|
|
|
class TestOneliners(GetSourceBase):
|
|
fodderModule = mod2
|
|
def test_oneline_lambda(self):
|
|
# Test inspect.getsource with a one-line lambda function.
|
|
self.assertSourceEqual(mod2.oll, 25, 25)
|
|
|
|
def test_threeline_lambda(self):
|
|
# Test inspect.getsource with a three-line lambda function,
|
|
# where the second and third lines are _not_ indented.
|
|
self.assertSourceEqual(mod2.tll, 28, 30)
|
|
|
|
def test_twoline_indented_lambda(self):
|
|
# Test inspect.getsource with a two-line lambda function,
|
|
# where the second line _is_ indented.
|
|
self.assertSourceEqual(mod2.tlli, 33, 34)
|
|
|
|
def test_onelinefunc(self):
|
|
# Test inspect.getsource with a regular one-line function.
|
|
self.assertSourceEqual(mod2.onelinefunc, 37, 37)
|
|
|
|
def test_manyargs(self):
|
|
# Test inspect.getsource with a regular function where
|
|
# the arguments are on two lines and _not_ indented and
|
|
# the body on the second line with the last arguments.
|
|
self.assertSourceEqual(mod2.manyargs, 40, 41)
|
|
|
|
def test_twolinefunc(self):
|
|
# Test inspect.getsource with a regular function where
|
|
# the body is on two lines, following the argument list and
|
|
# continued on the next line by a \\.
|
|
self.assertSourceEqual(mod2.twolinefunc, 44, 45)
|
|
|
|
def test_lambda_in_list(self):
|
|
# Test inspect.getsource with a one-line lambda function
|
|
# defined in a list, indented.
|
|
self.assertSourceEqual(mod2.a[1], 49, 49)
|
|
|
|
def test_anonymous(self):
|
|
# Test inspect.getsource with a lambda function defined
|
|
# as argument to another function.
|
|
self.assertSourceEqual(mod2.anonymous, 55, 55)
|
|
|
|
class TestBuggyCases(GetSourceBase):
|
|
fodderModule = mod2
|
|
|
|
def test_with_comment(self):
|
|
self.assertSourceEqual(mod2.with_comment, 58, 59)
|
|
|
|
def test_multiline_sig(self):
|
|
self.assertSourceEqual(mod2.multiline_sig[0], 63, 64)
|
|
|
|
def test_nested_class(self):
|
|
self.assertSourceEqual(mod2.func69().func71, 71, 72)
|
|
|
|
def test_one_liner_followed_by_non_name(self):
|
|
self.assertSourceEqual(mod2.func77, 77, 77)
|
|
|
|
def test_one_liner_dedent_non_name(self):
|
|
self.assertSourceEqual(mod2.cls82.func83, 83, 83)
|
|
|
|
def test_with_comment_instead_of_docstring(self):
|
|
self.assertSourceEqual(mod2.func88, 88, 90)
|
|
|
|
def test_method_in_dynamic_class(self):
|
|
self.assertSourceEqual(mod2.method_in_dynamic_class, 95, 97)
|
|
|
|
# This should not skip for CPython, but might on a repackaged python where
|
|
# unicodedata is not an external module, or on pypy.
|
|
@unittest.skipIf(not hasattr(unicodedata, '__file__') or
|
|
unicodedata.__file__.endswith('.py'),
|
|
"unicodedata is not an external binary module")
|
|
def test_findsource_binary(self):
|
|
self.assertRaises(OSError, inspect.getsource, unicodedata)
|
|
self.assertRaises(OSError, inspect.findsource, unicodedata)
|
|
|
|
def test_findsource_code_in_linecache(self):
|
|
lines = ["x=1"]
|
|
co = compile(lines[0], "_dynamically_created_file", "exec")
|
|
self.assertRaises(OSError, inspect.findsource, co)
|
|
self.assertRaises(OSError, inspect.getsource, co)
|
|
linecache.cache[co.co_filename] = (1, None, lines, co.co_filename)
|
|
try:
|
|
self.assertEqual(inspect.findsource(co), (lines,0))
|
|
self.assertEqual(inspect.getsource(co), lines[0])
|
|
finally:
|
|
del linecache.cache[co.co_filename]
|
|
|
|
def test_findsource_without_filename(self):
|
|
for fname in ['', '<string>']:
|
|
co = compile('x=1', fname, "exec")
|
|
self.assertRaises(IOError, inspect.findsource, co)
|
|
self.assertRaises(IOError, inspect.getsource, co)
|
|
|
|
def test_getsource_on_method(self):
|
|
self.assertSourceEqual(mod2.ClassWithMethod.method, 118, 119)
|
|
|
|
def test_nested_func(self):
|
|
self.assertSourceEqual(mod2.cls135.func136, 136, 139)
|
|
|
|
|
|
class TestNoEOL(GetSourceBase):
|
|
def setUp(self):
|
|
self.tempdir = TESTFN + '_dir'
|
|
os.mkdir(self.tempdir)
|
|
with open(os.path.join(self.tempdir,
|
|
'inspect_fodder3%spy' % os.extsep), 'w') as f:
|
|
f.write("class X:\n pass # No EOL")
|
|
with DirsOnSysPath(self.tempdir):
|
|
import inspect_fodder3 as mod3
|
|
self.fodderModule = mod3
|
|
super().setUp()
|
|
|
|
def tearDown(self):
|
|
shutil.rmtree(self.tempdir)
|
|
|
|
def test_class(self):
|
|
self.assertSourceEqual(self.fodderModule.X, 1, 2)
|
|
|
|
|
|
class _BrokenDataDescriptor(object):
|
|
"""
|
|
A broken data descriptor. See bug #1785.
|
|
"""
|
|
def __get__(*args):
|
|
raise AttributeError("broken data descriptor")
|
|
|
|
def __set__(*args):
|
|
raise RuntimeError
|
|
|
|
def __getattr__(*args):
|
|
raise AttributeError("broken data descriptor")
|
|
|
|
|
|
class _BrokenMethodDescriptor(object):
|
|
"""
|
|
A broken method descriptor. See bug #1785.
|
|
"""
|
|
def __get__(*args):
|
|
raise AttributeError("broken method descriptor")
|
|
|
|
def __getattr__(*args):
|
|
raise AttributeError("broken method descriptor")
|
|
|
|
|
|
# Helper for testing classify_class_attrs.
|
|
def attrs_wo_objs(cls):
|
|
return [t[:3] for t in inspect.classify_class_attrs(cls)]
|
|
|
|
|
|
class TestClassesAndFunctions(unittest.TestCase):
|
|
def test_newstyle_mro(self):
|
|
# The same w/ new-class MRO.
|
|
class A(object): pass
|
|
class B(A): pass
|
|
class C(A): pass
|
|
class D(B, C): pass
|
|
|
|
expected = (D, B, C, A, object)
|
|
got = inspect.getmro(D)
|
|
self.assertEqual(expected, got)
|
|
|
|
def assertArgSpecEquals(self, routine, args_e, varargs_e=None,
|
|
varkw_e=None, defaults_e=None, formatted=None):
|
|
with self.assertWarns(DeprecationWarning):
|
|
args, varargs, varkw, defaults = inspect.getargspec(routine)
|
|
self.assertEqual(args, args_e)
|
|
self.assertEqual(varargs, varargs_e)
|
|
self.assertEqual(varkw, varkw_e)
|
|
self.assertEqual(defaults, defaults_e)
|
|
if formatted is not None:
|
|
self.assertEqual(inspect.formatargspec(args, varargs, varkw, defaults),
|
|
formatted)
|
|
|
|
def assertFullArgSpecEquals(self, routine, args_e, varargs_e=None,
|
|
varkw_e=None, defaults_e=None,
|
|
kwonlyargs_e=[], kwonlydefaults_e=None,
|
|
ann_e={}, formatted=None):
|
|
args, varargs, varkw, defaults, kwonlyargs, kwonlydefaults, ann = \
|
|
inspect.getfullargspec(routine)
|
|
self.assertEqual(args, args_e)
|
|
self.assertEqual(varargs, varargs_e)
|
|
self.assertEqual(varkw, varkw_e)
|
|
self.assertEqual(defaults, defaults_e)
|
|
self.assertEqual(kwonlyargs, kwonlyargs_e)
|
|
self.assertEqual(kwonlydefaults, kwonlydefaults_e)
|
|
self.assertEqual(ann, ann_e)
|
|
if formatted is not None:
|
|
self.assertEqual(inspect.formatargspec(args, varargs, varkw, defaults,
|
|
kwonlyargs, kwonlydefaults, ann),
|
|
formatted)
|
|
|
|
def test_getargspec(self):
|
|
self.assertArgSpecEquals(mod.eggs, ['x', 'y'], formatted='(x, y)')
|
|
|
|
self.assertArgSpecEquals(mod.spam,
|
|
['a', 'b', 'c', 'd', 'e', 'f'],
|
|
'g', 'h', (3, 4, 5),
|
|
'(a, b, c, d=3, e=4, f=5, *g, **h)')
|
|
|
|
self.assertRaises(ValueError, self.assertArgSpecEquals,
|
|
mod2.keyworded, [])
|
|
|
|
self.assertRaises(ValueError, self.assertArgSpecEquals,
|
|
mod2.annotated, [])
|
|
self.assertRaises(ValueError, self.assertArgSpecEquals,
|
|
mod2.keyword_only_arg, [])
|
|
|
|
|
|
def test_getfullargspec(self):
|
|
self.assertFullArgSpecEquals(mod2.keyworded, [], varargs_e='arg1',
|
|
kwonlyargs_e=['arg2'],
|
|
kwonlydefaults_e={'arg2':1},
|
|
formatted='(*arg1, arg2=1)')
|
|
|
|
self.assertFullArgSpecEquals(mod2.annotated, ['arg1'],
|
|
ann_e={'arg1' : list},
|
|
formatted='(arg1: list)')
|
|
self.assertFullArgSpecEquals(mod2.keyword_only_arg, [],
|
|
kwonlyargs_e=['arg'],
|
|
formatted='(*, arg)')
|
|
|
|
def test_argspec_api_ignores_wrapped(self):
|
|
# Issue 20684: low level introspection API must ignore __wrapped__
|
|
@functools.wraps(mod.spam)
|
|
def ham(x, y):
|
|
pass
|
|
# Basic check
|
|
self.assertArgSpecEquals(ham, ['x', 'y'], formatted='(x, y)')
|
|
self.assertFullArgSpecEquals(ham, ['x', 'y'], formatted='(x, y)')
|
|
self.assertFullArgSpecEquals(functools.partial(ham),
|
|
['x', 'y'], formatted='(x, y)')
|
|
# Other variants
|
|
def check_method(f):
|
|
self.assertArgSpecEquals(f, ['self', 'x', 'y'],
|
|
formatted='(self, x, y)')
|
|
class C:
|
|
@functools.wraps(mod.spam)
|
|
def ham(self, x, y):
|
|
pass
|
|
pham = functools.partialmethod(ham)
|
|
@functools.wraps(mod.spam)
|
|
def __call__(self, x, y):
|
|
pass
|
|
check_method(C())
|
|
check_method(C.ham)
|
|
check_method(C().ham)
|
|
check_method(C.pham)
|
|
check_method(C().pham)
|
|
|
|
class C_new:
|
|
@functools.wraps(mod.spam)
|
|
def __new__(self, x, y):
|
|
pass
|
|
check_method(C_new)
|
|
|
|
class C_init:
|
|
@functools.wraps(mod.spam)
|
|
def __init__(self, x, y):
|
|
pass
|
|
check_method(C_init)
|
|
|
|
def test_getfullargspec_signature_attr(self):
|
|
def test():
|
|
pass
|
|
spam_param = inspect.Parameter('spam', inspect.Parameter.POSITIONAL_ONLY)
|
|
test.__signature__ = inspect.Signature(parameters=(spam_param,))
|
|
|
|
self.assertFullArgSpecEquals(test, args_e=['spam'], formatted='(spam)')
|
|
|
|
def test_getfullargspec_signature_annos(self):
|
|
def test(a:'spam') -> 'ham': pass
|
|
spec = inspect.getfullargspec(test)
|
|
self.assertEqual(test.__annotations__, spec.annotations)
|
|
|
|
def test(): pass
|
|
spec = inspect.getfullargspec(test)
|
|
self.assertEqual(test.__annotations__, spec.annotations)
|
|
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_getfullargspec_builtin_methods(self):
|
|
self.assertFullArgSpecEquals(_pickle.Pickler.dump,
|
|
args_e=['self', 'obj'], formatted='(self, obj)')
|
|
|
|
self.assertFullArgSpecEquals(_pickle.Pickler(io.BytesIO()).dump,
|
|
args_e=['self', 'obj'], formatted='(self, obj)')
|
|
|
|
self.assertFullArgSpecEquals(
|
|
os.stat,
|
|
args_e=['path'],
|
|
kwonlyargs_e=['dir_fd', 'follow_symlinks'],
|
|
kwonlydefaults_e={'dir_fd': None, 'follow_symlinks': True},
|
|
formatted='(path, *, dir_fd=None, follow_symlinks=True)')
|
|
|
|
@cpython_only
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_getfullagrspec_builtin_func(self):
|
|
import _testcapi
|
|
builtin = _testcapi.docstring_with_signature_with_defaults
|
|
spec = inspect.getfullargspec(builtin)
|
|
self.assertEqual(spec.defaults[0], 'avocado')
|
|
|
|
@cpython_only
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_getfullagrspec_builtin_func_no_signature(self):
|
|
import _testcapi
|
|
builtin = _testcapi.docstring_no_signature
|
|
with self.assertRaises(TypeError):
|
|
inspect.getfullargspec(builtin)
|
|
|
|
def test_getargspec_method(self):
|
|
class A(object):
|
|
def m(self):
|
|
pass
|
|
self.assertArgSpecEquals(A.m, ['self'])
|
|
|
|
def test_classify_newstyle(self):
|
|
class A(object):
|
|
|
|
def s(): pass
|
|
s = staticmethod(s)
|
|
|
|
def c(cls): pass
|
|
c = classmethod(c)
|
|
|
|
def getp(self): pass
|
|
p = property(getp)
|
|
|
|
def m(self): pass
|
|
|
|
def m1(self): pass
|
|
|
|
datablob = '1'
|
|
|
|
dd = _BrokenDataDescriptor()
|
|
md = _BrokenMethodDescriptor()
|
|
|
|
attrs = attrs_wo_objs(A)
|
|
|
|
self.assertIn(('__new__', 'method', object), attrs, 'missing __new__')
|
|
self.assertIn(('__init__', 'method', object), attrs, 'missing __init__')
|
|
|
|
self.assertIn(('s', 'static method', A), attrs, 'missing static method')
|
|
self.assertIn(('c', 'class method', A), attrs, 'missing class method')
|
|
self.assertIn(('p', 'property', A), attrs, 'missing property')
|
|
self.assertIn(('m', 'method', A), attrs,
|
|
'missing plain method: %r' % attrs)
|
|
self.assertIn(('m1', 'method', A), attrs, 'missing plain method')
|
|
self.assertIn(('datablob', 'data', A), attrs, 'missing data')
|
|
self.assertIn(('md', 'method', A), attrs, 'missing method descriptor')
|
|
self.assertIn(('dd', 'data', A), attrs, 'missing data descriptor')
|
|
|
|
class B(A):
|
|
|
|
def m(self): pass
|
|
|
|
attrs = attrs_wo_objs(B)
|
|
self.assertIn(('s', 'static method', A), attrs, 'missing static method')
|
|
self.assertIn(('c', 'class method', A), attrs, 'missing class method')
|
|
self.assertIn(('p', 'property', A), attrs, 'missing property')
|
|
self.assertIn(('m', 'method', B), attrs, 'missing plain method')
|
|
self.assertIn(('m1', 'method', A), attrs, 'missing plain method')
|
|
self.assertIn(('datablob', 'data', A), attrs, 'missing data')
|
|
self.assertIn(('md', 'method', A), attrs, 'missing method descriptor')
|
|
self.assertIn(('dd', 'data', A), attrs, 'missing data descriptor')
|
|
|
|
|
|
class C(A):
|
|
|
|
def m(self): pass
|
|
def c(self): pass
|
|
|
|
attrs = attrs_wo_objs(C)
|
|
self.assertIn(('s', 'static method', A), attrs, 'missing static method')
|
|
self.assertIn(('c', 'method', C), attrs, 'missing plain method')
|
|
self.assertIn(('p', 'property', A), attrs, 'missing property')
|
|
self.assertIn(('m', 'method', C), attrs, 'missing plain method')
|
|
self.assertIn(('m1', 'method', A), attrs, 'missing plain method')
|
|
self.assertIn(('datablob', 'data', A), attrs, 'missing data')
|
|
self.assertIn(('md', 'method', A), attrs, 'missing method descriptor')
|
|
self.assertIn(('dd', 'data', A), attrs, 'missing data descriptor')
|
|
|
|
class D(B, C):
|
|
|
|
def m1(self): pass
|
|
|
|
attrs = attrs_wo_objs(D)
|
|
self.assertIn(('s', 'static method', A), attrs, 'missing static method')
|
|
self.assertIn(('c', 'method', C), attrs, 'missing plain method')
|
|
self.assertIn(('p', 'property', A), attrs, 'missing property')
|
|
self.assertIn(('m', 'method', B), attrs, 'missing plain method')
|
|
self.assertIn(('m1', 'method', D), attrs, 'missing plain method')
|
|
self.assertIn(('datablob', 'data', A), attrs, 'missing data')
|
|
self.assertIn(('md', 'method', A), attrs, 'missing method descriptor')
|
|
self.assertIn(('dd', 'data', A), attrs, 'missing data descriptor')
|
|
|
|
def test_classify_builtin_types(self):
|
|
# Simple sanity check that all built-in types can have their
|
|
# attributes classified.
|
|
for name in dir(__builtins__):
|
|
builtin = getattr(__builtins__, name)
|
|
if isinstance(builtin, type):
|
|
inspect.classify_class_attrs(builtin)
|
|
|
|
def test_classify_DynamicClassAttribute(self):
|
|
class Meta(type):
|
|
def __getattr__(self, name):
|
|
if name == 'ham':
|
|
return 'spam'
|
|
return super().__getattr__(name)
|
|
class VA(metaclass=Meta):
|
|
@types.DynamicClassAttribute
|
|
def ham(self):
|
|
return 'eggs'
|
|
should_find_dca = inspect.Attribute('ham', 'data', VA, VA.__dict__['ham'])
|
|
self.assertIn(should_find_dca, inspect.classify_class_attrs(VA))
|
|
should_find_ga = inspect.Attribute('ham', 'data', Meta, 'spam')
|
|
self.assertIn(should_find_ga, inspect.classify_class_attrs(VA))
|
|
|
|
def test_classify_overrides_bool(self):
|
|
class NoBool(object):
|
|
def __eq__(self, other):
|
|
return NoBool()
|
|
|
|
def __bool__(self):
|
|
raise NotImplementedError(
|
|
"This object does not specify a boolean value")
|
|
|
|
class HasNB(object):
|
|
dd = NoBool()
|
|
|
|
should_find_attr = inspect.Attribute('dd', 'data', HasNB, HasNB.dd)
|
|
self.assertIn(should_find_attr, inspect.classify_class_attrs(HasNB))
|
|
|
|
def test_classify_metaclass_class_attribute(self):
|
|
class Meta(type):
|
|
fish = 'slap'
|
|
def __dir__(self):
|
|
return ['__class__', '__module__', '__name__', 'fish']
|
|
class Class(metaclass=Meta):
|
|
pass
|
|
should_find = inspect.Attribute('fish', 'data', Meta, 'slap')
|
|
self.assertIn(should_find, inspect.classify_class_attrs(Class))
|
|
|
|
def test_classify_VirtualAttribute(self):
|
|
class Meta(type):
|
|
def __dir__(cls):
|
|
return ['__class__', '__module__', '__name__', 'BOOM']
|
|
def __getattr__(self, name):
|
|
if name =='BOOM':
|
|
return 42
|
|
return super().__getattr(name)
|
|
class Class(metaclass=Meta):
|
|
pass
|
|
should_find = inspect.Attribute('BOOM', 'data', Meta, 42)
|
|
self.assertIn(should_find, inspect.classify_class_attrs(Class))
|
|
|
|
def test_classify_VirtualAttribute_multi_classes(self):
|
|
class Meta1(type):
|
|
def __dir__(cls):
|
|
return ['__class__', '__module__', '__name__', 'one']
|
|
def __getattr__(self, name):
|
|
if name =='one':
|
|
return 1
|
|
return super().__getattr__(name)
|
|
class Meta2(type):
|
|
def __dir__(cls):
|
|
return ['__class__', '__module__', '__name__', 'two']
|
|
def __getattr__(self, name):
|
|
if name =='two':
|
|
return 2
|
|
return super().__getattr__(name)
|
|
class Meta3(Meta1, Meta2):
|
|
def __dir__(cls):
|
|
return list(sorted(set(['__class__', '__module__', '__name__', 'three'] +
|
|
Meta1.__dir__(cls) + Meta2.__dir__(cls))))
|
|
def __getattr__(self, name):
|
|
if name =='three':
|
|
return 3
|
|
return super().__getattr__(name)
|
|
class Class1(metaclass=Meta1):
|
|
pass
|
|
class Class2(Class1, metaclass=Meta3):
|
|
pass
|
|
|
|
should_find1 = inspect.Attribute('one', 'data', Meta1, 1)
|
|
should_find2 = inspect.Attribute('two', 'data', Meta2, 2)
|
|
should_find3 = inspect.Attribute('three', 'data', Meta3, 3)
|
|
cca = inspect.classify_class_attrs(Class2)
|
|
for sf in (should_find1, should_find2, should_find3):
|
|
self.assertIn(sf, cca)
|
|
|
|
def test_classify_class_attrs_with_buggy_dir(self):
|
|
class M(type):
|
|
def __dir__(cls):
|
|
return ['__class__', '__name__', 'missing']
|
|
class C(metaclass=M):
|
|
pass
|
|
attrs = [a[0] for a in inspect.classify_class_attrs(C)]
|
|
self.assertNotIn('missing', attrs)
|
|
|
|
def test_getmembers_descriptors(self):
|
|
class A(object):
|
|
dd = _BrokenDataDescriptor()
|
|
md = _BrokenMethodDescriptor()
|
|
|
|
def pred_wrapper(pred):
|
|
# A quick'n'dirty way to discard standard attributes of new-style
|
|
# classes.
|
|
class Empty(object):
|
|
pass
|
|
def wrapped(x):
|
|
if '__name__' in dir(x) and hasattr(Empty, x.__name__):
|
|
return False
|
|
return pred(x)
|
|
return wrapped
|
|
|
|
ismethoddescriptor = pred_wrapper(inspect.ismethoddescriptor)
|
|
isdatadescriptor = pred_wrapper(inspect.isdatadescriptor)
|
|
|
|
self.assertEqual(inspect.getmembers(A, ismethoddescriptor),
|
|
[('md', A.__dict__['md'])])
|
|
self.assertEqual(inspect.getmembers(A, isdatadescriptor),
|
|
[('dd', A.__dict__['dd'])])
|
|
|
|
class B(A):
|
|
pass
|
|
|
|
self.assertEqual(inspect.getmembers(B, ismethoddescriptor),
|
|
[('md', A.__dict__['md'])])
|
|
self.assertEqual(inspect.getmembers(B, isdatadescriptor),
|
|
[('dd', A.__dict__['dd'])])
|
|
|
|
def test_getmembers_method(self):
|
|
class B:
|
|
def f(self):
|
|
pass
|
|
|
|
self.assertIn(('f', B.f), inspect.getmembers(B))
|
|
self.assertNotIn(('f', B.f), inspect.getmembers(B, inspect.ismethod))
|
|
b = B()
|
|
self.assertIn(('f', b.f), inspect.getmembers(b))
|
|
self.assertIn(('f', b.f), inspect.getmembers(b, inspect.ismethod))
|
|
|
|
def test_getmembers_VirtualAttribute(self):
|
|
class M(type):
|
|
def __getattr__(cls, name):
|
|
if name == 'eggs':
|
|
return 'scrambled'
|
|
return super().__getattr__(name)
|
|
class A(metaclass=M):
|
|
@types.DynamicClassAttribute
|
|
def eggs(self):
|
|
return 'spam'
|
|
self.assertIn(('eggs', 'scrambled'), inspect.getmembers(A))
|
|
self.assertIn(('eggs', 'spam'), inspect.getmembers(A()))
|
|
|
|
def test_getmembers_with_buggy_dir(self):
|
|
class M(type):
|
|
def __dir__(cls):
|
|
return ['__class__', '__name__', 'missing']
|
|
class C(metaclass=M):
|
|
pass
|
|
attrs = [a[0] for a in inspect.getmembers(C)]
|
|
self.assertNotIn('missing', attrs)
|
|
|
|
|
|
_global_ref = object()
|
|
class TestGetClosureVars(unittest.TestCase):
|
|
|
|
def test_name_resolution(self):
|
|
# Basic test of the 4 different resolution mechanisms
|
|
def f(nonlocal_ref):
|
|
def g(local_ref):
|
|
print(local_ref, nonlocal_ref, _global_ref, unbound_ref)
|
|
return g
|
|
_arg = object()
|
|
nonlocal_vars = {"nonlocal_ref": _arg}
|
|
global_vars = {"_global_ref": _global_ref}
|
|
builtin_vars = {"print": print}
|
|
unbound_names = {"unbound_ref"}
|
|
expected = inspect.ClosureVars(nonlocal_vars, global_vars,
|
|
builtin_vars, unbound_names)
|
|
self.assertEqual(inspect.getclosurevars(f(_arg)), expected)
|
|
|
|
def test_generator_closure(self):
|
|
def f(nonlocal_ref):
|
|
def g(local_ref):
|
|
print(local_ref, nonlocal_ref, _global_ref, unbound_ref)
|
|
yield
|
|
return g
|
|
_arg = object()
|
|
nonlocal_vars = {"nonlocal_ref": _arg}
|
|
global_vars = {"_global_ref": _global_ref}
|
|
builtin_vars = {"print": print}
|
|
unbound_names = {"unbound_ref"}
|
|
expected = inspect.ClosureVars(nonlocal_vars, global_vars,
|
|
builtin_vars, unbound_names)
|
|
self.assertEqual(inspect.getclosurevars(f(_arg)), expected)
|
|
|
|
def test_method_closure(self):
|
|
class C:
|
|
def f(self, nonlocal_ref):
|
|
def g(local_ref):
|
|
print(local_ref, nonlocal_ref, _global_ref, unbound_ref)
|
|
return g
|
|
_arg = object()
|
|
nonlocal_vars = {"nonlocal_ref": _arg}
|
|
global_vars = {"_global_ref": _global_ref}
|
|
builtin_vars = {"print": print}
|
|
unbound_names = {"unbound_ref"}
|
|
expected = inspect.ClosureVars(nonlocal_vars, global_vars,
|
|
builtin_vars, unbound_names)
|
|
self.assertEqual(inspect.getclosurevars(C().f(_arg)), expected)
|
|
|
|
def test_nonlocal_vars(self):
|
|
# More complex tests of nonlocal resolution
|
|
def _nonlocal_vars(f):
|
|
return inspect.getclosurevars(f).nonlocals
|
|
|
|
def make_adder(x):
|
|
def add(y):
|
|
return x + y
|
|
return add
|
|
|
|
def curry(func, arg1):
|
|
return lambda arg2: func(arg1, arg2)
|
|
|
|
def less_than(a, b):
|
|
return a < b
|
|
|
|
# The infamous Y combinator.
|
|
def Y(le):
|
|
def g(f):
|
|
return le(lambda x: f(f)(x))
|
|
Y.g_ref = g
|
|
return g(g)
|
|
|
|
def check_y_combinator(func):
|
|
self.assertEqual(_nonlocal_vars(func), {'f': Y.g_ref})
|
|
|
|
inc = make_adder(1)
|
|
add_two = make_adder(2)
|
|
greater_than_five = curry(less_than, 5)
|
|
|
|
self.assertEqual(_nonlocal_vars(inc), {'x': 1})
|
|
self.assertEqual(_nonlocal_vars(add_two), {'x': 2})
|
|
self.assertEqual(_nonlocal_vars(greater_than_five),
|
|
{'arg1': 5, 'func': less_than})
|
|
self.assertEqual(_nonlocal_vars((lambda x: lambda y: x + y)(3)),
|
|
{'x': 3})
|
|
Y(check_y_combinator)
|
|
|
|
def test_getclosurevars_empty(self):
|
|
def foo(): pass
|
|
_empty = inspect.ClosureVars({}, {}, {}, set())
|
|
self.assertEqual(inspect.getclosurevars(lambda: True), _empty)
|
|
self.assertEqual(inspect.getclosurevars(foo), _empty)
|
|
|
|
def test_getclosurevars_error(self):
|
|
class T: pass
|
|
self.assertRaises(TypeError, inspect.getclosurevars, 1)
|
|
self.assertRaises(TypeError, inspect.getclosurevars, list)
|
|
self.assertRaises(TypeError, inspect.getclosurevars, {})
|
|
|
|
def _private_globals(self):
|
|
code = """def f(): print(path)"""
|
|
ns = {}
|
|
exec(code, ns)
|
|
return ns["f"], ns
|
|
|
|
def test_builtins_fallback(self):
|
|
f, ns = self._private_globals()
|
|
ns.pop("__builtins__", None)
|
|
expected = inspect.ClosureVars({}, {}, {"print":print}, {"path"})
|
|
self.assertEqual(inspect.getclosurevars(f), expected)
|
|
|
|
def test_builtins_as_dict(self):
|
|
f, ns = self._private_globals()
|
|
ns["__builtins__"] = {"path":1}
|
|
expected = inspect.ClosureVars({}, {}, {"path":1}, {"print"})
|
|
self.assertEqual(inspect.getclosurevars(f), expected)
|
|
|
|
def test_builtins_as_module(self):
|
|
f, ns = self._private_globals()
|
|
ns["__builtins__"] = os
|
|
expected = inspect.ClosureVars({}, {}, {"path":os.path}, {"print"})
|
|
self.assertEqual(inspect.getclosurevars(f), expected)
|
|
|
|
|
|
class TestGetcallargsFunctions(unittest.TestCase):
|
|
|
|
def assertEqualCallArgs(self, func, call_params_string, locs=None):
|
|
locs = dict(locs or {}, func=func)
|
|
r1 = eval('func(%s)' % call_params_string, None, locs)
|
|
r2 = eval('inspect.getcallargs(func, %s)' % call_params_string, None,
|
|
locs)
|
|
self.assertEqual(r1, r2)
|
|
|
|
def assertEqualException(self, func, call_param_string, locs=None):
|
|
locs = dict(locs or {}, func=func)
|
|
try:
|
|
eval('func(%s)' % call_param_string, None, locs)
|
|
except Exception as e:
|
|
ex1 = e
|
|
else:
|
|
self.fail('Exception not raised')
|
|
try:
|
|
eval('inspect.getcallargs(func, %s)' % call_param_string, None,
|
|
locs)
|
|
except Exception as e:
|
|
ex2 = e
|
|
else:
|
|
self.fail('Exception not raised')
|
|
self.assertIs(type(ex1), type(ex2))
|
|
self.assertEqual(str(ex1), str(ex2))
|
|
del ex1, ex2
|
|
|
|
def makeCallable(self, signature):
|
|
"""Create a function that returns its locals()"""
|
|
code = "lambda %s: locals()"
|
|
return eval(code % signature)
|
|
|
|
def test_plain(self):
|
|
f = self.makeCallable('a, b=1')
|
|
self.assertEqualCallArgs(f, '2')
|
|
self.assertEqualCallArgs(f, '2, 3')
|
|
self.assertEqualCallArgs(f, 'a=2')
|
|
self.assertEqualCallArgs(f, 'b=3, a=2')
|
|
self.assertEqualCallArgs(f, '2, b=3')
|
|
# expand *iterable / **mapping
|
|
self.assertEqualCallArgs(f, '*(2,)')
|
|
self.assertEqualCallArgs(f, '*[2]')
|
|
self.assertEqualCallArgs(f, '*(2, 3)')
|
|
self.assertEqualCallArgs(f, '*[2, 3]')
|
|
self.assertEqualCallArgs(f, '**{"a":2}')
|
|
self.assertEqualCallArgs(f, 'b=3, **{"a":2}')
|
|
self.assertEqualCallArgs(f, '2, **{"b":3}')
|
|
self.assertEqualCallArgs(f, '**{"b":3, "a":2}')
|
|
# expand UserList / UserDict
|
|
self.assertEqualCallArgs(f, '*collections.UserList([2])')
|
|
self.assertEqualCallArgs(f, '*collections.UserList([2, 3])')
|
|
self.assertEqualCallArgs(f, '**collections.UserDict(a=2)')
|
|
self.assertEqualCallArgs(f, '2, **collections.UserDict(b=3)')
|
|
self.assertEqualCallArgs(f, 'b=2, **collections.UserDict(a=3)')
|
|
|
|
def test_varargs(self):
|
|
f = self.makeCallable('a, b=1, *c')
|
|
self.assertEqualCallArgs(f, '2')
|
|
self.assertEqualCallArgs(f, '2, 3')
|
|
self.assertEqualCallArgs(f, '2, 3, 4')
|
|
self.assertEqualCallArgs(f, '*(2,3,4)')
|
|
self.assertEqualCallArgs(f, '2, *[3,4]')
|
|
self.assertEqualCallArgs(f, '2, 3, *collections.UserList([4])')
|
|
|
|
def test_varkw(self):
|
|
f = self.makeCallable('a, b=1, **c')
|
|
self.assertEqualCallArgs(f, 'a=2')
|
|
self.assertEqualCallArgs(f, '2, b=3, c=4')
|
|
self.assertEqualCallArgs(f, 'b=3, a=2, c=4')
|
|
self.assertEqualCallArgs(f, 'c=4, **{"a":2, "b":3}')
|
|
self.assertEqualCallArgs(f, '2, c=4, **{"b":3}')
|
|
self.assertEqualCallArgs(f, 'b=2, **{"a":3, "c":4}')
|
|
self.assertEqualCallArgs(f, '**collections.UserDict(a=2, b=3, c=4)')
|
|
self.assertEqualCallArgs(f, '2, c=4, **collections.UserDict(b=3)')
|
|
self.assertEqualCallArgs(f, 'b=2, **collections.UserDict(a=3, c=4)')
|
|
|
|
def test_varkw_only(self):
|
|
# issue11256:
|
|
f = self.makeCallable('**c')
|
|
self.assertEqualCallArgs(f, '')
|
|
self.assertEqualCallArgs(f, 'a=1')
|
|
self.assertEqualCallArgs(f, 'a=1, b=2')
|
|
self.assertEqualCallArgs(f, 'c=3, **{"a": 1, "b": 2}')
|
|
self.assertEqualCallArgs(f, '**collections.UserDict(a=1, b=2)')
|
|
self.assertEqualCallArgs(f, 'c=3, **collections.UserDict(a=1, b=2)')
|
|
|
|
def test_keyword_only(self):
|
|
f = self.makeCallable('a=3, *, c, d=2')
|
|
self.assertEqualCallArgs(f, 'c=3')
|
|
self.assertEqualCallArgs(f, 'c=3, a=3')
|
|
self.assertEqualCallArgs(f, 'a=2, c=4')
|
|
self.assertEqualCallArgs(f, '4, c=4')
|
|
self.assertEqualException(f, '')
|
|
self.assertEqualException(f, '3')
|
|
self.assertEqualException(f, 'a=3')
|
|
self.assertEqualException(f, 'd=4')
|
|
|
|
f = self.makeCallable('*, c, d=2')
|
|
self.assertEqualCallArgs(f, 'c=3')
|
|
self.assertEqualCallArgs(f, 'c=3, d=4')
|
|
self.assertEqualCallArgs(f, 'd=4, c=3')
|
|
|
|
def test_multiple_features(self):
|
|
f = self.makeCallable('a, b=2, *f, **g')
|
|
self.assertEqualCallArgs(f, '2, 3, 7')
|
|
self.assertEqualCallArgs(f, '2, 3, x=8')
|
|
self.assertEqualCallArgs(f, '2, 3, x=8, *[(4,[5,6]), 7]')
|
|
self.assertEqualCallArgs(f, '2, x=8, *[3, (4,[5,6]), 7], y=9')
|
|
self.assertEqualCallArgs(f, 'x=8, *[2, 3, (4,[5,6])], y=9')
|
|
self.assertEqualCallArgs(f, 'x=8, *collections.UserList('
|
|
'[2, 3, (4,[5,6])]), **{"y":9, "z":10}')
|
|
self.assertEqualCallArgs(f, '2, x=8, *collections.UserList([3, '
|
|
'(4,[5,6])]), **collections.UserDict('
|
|
'y=9, z=10)')
|
|
|
|
f = self.makeCallable('a, b=2, *f, x, y=99, **g')
|
|
self.assertEqualCallArgs(f, '2, 3, x=8')
|
|
self.assertEqualCallArgs(f, '2, 3, x=8, *[(4,[5,6]), 7]')
|
|
self.assertEqualCallArgs(f, '2, x=8, *[3, (4,[5,6]), 7], y=9, z=10')
|
|
self.assertEqualCallArgs(f, 'x=8, *[2, 3, (4,[5,6])], y=9, z=10')
|
|
self.assertEqualCallArgs(f, 'x=8, *collections.UserList('
|
|
'[2, 3, (4,[5,6])]), q=0, **{"y":9, "z":10}')
|
|
self.assertEqualCallArgs(f, '2, x=8, *collections.UserList([3, '
|
|
'(4,[5,6])]), q=0, **collections.UserDict('
|
|
'y=9, z=10)')
|
|
|
|
def test_errors(self):
|
|
f0 = self.makeCallable('')
|
|
f1 = self.makeCallable('a, b')
|
|
f2 = self.makeCallable('a, b=1')
|
|
# f0 takes no arguments
|
|
self.assertEqualException(f0, '1')
|
|
self.assertEqualException(f0, 'x=1')
|
|
self.assertEqualException(f0, '1,x=1')
|
|
# f1 takes exactly 2 arguments
|
|
self.assertEqualException(f1, '')
|
|
self.assertEqualException(f1, '1')
|
|
self.assertEqualException(f1, 'a=2')
|
|
self.assertEqualException(f1, 'b=3')
|
|
# f2 takes at least 1 argument
|
|
self.assertEqualException(f2, '')
|
|
self.assertEqualException(f2, 'b=3')
|
|
for f in f1, f2:
|
|
# f1/f2 takes exactly/at most 2 arguments
|
|
self.assertEqualException(f, '2, 3, 4')
|
|
self.assertEqualException(f, '1, 2, 3, a=1')
|
|
self.assertEqualException(f, '2, 3, 4, c=5')
|
|
# XXX: success of this one depends on dict order
|
|
## self.assertEqualException(f, '2, 3, 4, a=1, c=5')
|
|
# f got an unexpected keyword argument
|
|
self.assertEqualException(f, 'c=2')
|
|
self.assertEqualException(f, '2, c=3')
|
|
self.assertEqualException(f, '2, 3, c=4')
|
|
self.assertEqualException(f, '2, c=4, b=3')
|
|
self.assertEqualException(f, '**{u"\u03c0\u03b9": 4}')
|
|
# f got multiple values for keyword argument
|
|
self.assertEqualException(f, '1, a=2')
|
|
self.assertEqualException(f, '1, **{"a":2}')
|
|
self.assertEqualException(f, '1, 2, b=3')
|
|
# XXX: Python inconsistency
|
|
# - for functions and bound methods: unexpected keyword 'c'
|
|
# - for unbound methods: multiple values for keyword 'a'
|
|
#self.assertEqualException(f, '1, c=3, a=2')
|
|
# issue11256:
|
|
f3 = self.makeCallable('**c')
|
|
self.assertEqualException(f3, '1, 2')
|
|
self.assertEqualException(f3, '1, 2, a=1, b=2')
|
|
f4 = self.makeCallable('*, a, b=0')
|
|
self.assertEqualException(f3, '1, 2')
|
|
self.assertEqualException(f3, '1, 2, a=1, b=2')
|
|
|
|
# issue #20816: getcallargs() fails to iterate over non-existent
|
|
# kwonlydefaults and raises a wrong TypeError
|
|
def f5(*, a): pass
|
|
with self.assertRaisesRegex(TypeError,
|
|
'missing 1 required keyword-only'):
|
|
inspect.getcallargs(f5)
|
|
|
|
|
|
# issue20817:
|
|
def f6(a, b, c):
|
|
pass
|
|
with self.assertRaisesRegex(TypeError, "'a', 'b' and 'c'"):
|
|
inspect.getcallargs(f6)
|
|
|
|
class TestGetcallargsMethods(TestGetcallargsFunctions):
|
|
|
|
def setUp(self):
|
|
class Foo(object):
|
|
pass
|
|
self.cls = Foo
|
|
self.inst = Foo()
|
|
|
|
def makeCallable(self, signature):
|
|
assert 'self' not in signature
|
|
mk = super(TestGetcallargsMethods, self).makeCallable
|
|
self.cls.method = mk('self, ' + signature)
|
|
return self.inst.method
|
|
|
|
class TestGetcallargsUnboundMethods(TestGetcallargsMethods):
|
|
|
|
def makeCallable(self, signature):
|
|
super(TestGetcallargsUnboundMethods, self).makeCallable(signature)
|
|
return self.cls.method
|
|
|
|
def assertEqualCallArgs(self, func, call_params_string, locs=None):
|
|
return super(TestGetcallargsUnboundMethods, self).assertEqualCallArgs(
|
|
*self._getAssertEqualParams(func, call_params_string, locs))
|
|
|
|
def assertEqualException(self, func, call_params_string, locs=None):
|
|
return super(TestGetcallargsUnboundMethods, self).assertEqualException(
|
|
*self._getAssertEqualParams(func, call_params_string, locs))
|
|
|
|
def _getAssertEqualParams(self, func, call_params_string, locs=None):
|
|
assert 'inst' not in call_params_string
|
|
locs = dict(locs or {}, inst=self.inst)
|
|
return (func, 'inst,' + call_params_string, locs)
|
|
|
|
|
|
class TestGetattrStatic(unittest.TestCase):
|
|
|
|
def test_basic(self):
|
|
class Thing(object):
|
|
x = object()
|
|
|
|
thing = Thing()
|
|
self.assertEqual(inspect.getattr_static(thing, 'x'), Thing.x)
|
|
self.assertEqual(inspect.getattr_static(thing, 'x', None), Thing.x)
|
|
with self.assertRaises(AttributeError):
|
|
inspect.getattr_static(thing, 'y')
|
|
|
|
self.assertEqual(inspect.getattr_static(thing, 'y', 3), 3)
|
|
|
|
def test_inherited(self):
|
|
class Thing(object):
|
|
x = object()
|
|
class OtherThing(Thing):
|
|
pass
|
|
|
|
something = OtherThing()
|
|
self.assertEqual(inspect.getattr_static(something, 'x'), Thing.x)
|
|
|
|
def test_instance_attr(self):
|
|
class Thing(object):
|
|
x = 2
|
|
def __init__(self, x):
|
|
self.x = x
|
|
thing = Thing(3)
|
|
self.assertEqual(inspect.getattr_static(thing, 'x'), 3)
|
|
del thing.x
|
|
self.assertEqual(inspect.getattr_static(thing, 'x'), 2)
|
|
|
|
def test_property(self):
|
|
class Thing(object):
|
|
@property
|
|
def x(self):
|
|
raise AttributeError("I'm pretending not to exist")
|
|
thing = Thing()
|
|
self.assertEqual(inspect.getattr_static(thing, 'x'), Thing.x)
|
|
|
|
def test_descriptor_raises_AttributeError(self):
|
|
class descriptor(object):
|
|
def __get__(*_):
|
|
raise AttributeError("I'm pretending not to exist")
|
|
desc = descriptor()
|
|
class Thing(object):
|
|
x = desc
|
|
thing = Thing()
|
|
self.assertEqual(inspect.getattr_static(thing, 'x'), desc)
|
|
|
|
def test_classAttribute(self):
|
|
class Thing(object):
|
|
x = object()
|
|
|
|
self.assertEqual(inspect.getattr_static(Thing, 'x'), Thing.x)
|
|
|
|
def test_classVirtualAttribute(self):
|
|
class Thing(object):
|
|
@types.DynamicClassAttribute
|
|
def x(self):
|
|
return self._x
|
|
_x = object()
|
|
|
|
self.assertEqual(inspect.getattr_static(Thing, 'x'), Thing.__dict__['x'])
|
|
|
|
def test_inherited_classattribute(self):
|
|
class Thing(object):
|
|
x = object()
|
|
class OtherThing(Thing):
|
|
pass
|
|
|
|
self.assertEqual(inspect.getattr_static(OtherThing, 'x'), Thing.x)
|
|
|
|
def test_slots(self):
|
|
class Thing(object):
|
|
y = 'bar'
|
|
__slots__ = ['x']
|
|
def __init__(self):
|
|
self.x = 'foo'
|
|
thing = Thing()
|
|
self.assertEqual(inspect.getattr_static(thing, 'x'), Thing.x)
|
|
self.assertEqual(inspect.getattr_static(thing, 'y'), 'bar')
|
|
|
|
del thing.x
|
|
self.assertEqual(inspect.getattr_static(thing, 'x'), Thing.x)
|
|
|
|
def test_metaclass(self):
|
|
class meta(type):
|
|
attr = 'foo'
|
|
class Thing(object, metaclass=meta):
|
|
pass
|
|
self.assertEqual(inspect.getattr_static(Thing, 'attr'), 'foo')
|
|
|
|
class sub(meta):
|
|
pass
|
|
class OtherThing(object, metaclass=sub):
|
|
x = 3
|
|
self.assertEqual(inspect.getattr_static(OtherThing, 'attr'), 'foo')
|
|
|
|
class OtherOtherThing(OtherThing):
|
|
pass
|
|
# this test is odd, but it was added as it exposed a bug
|
|
self.assertEqual(inspect.getattr_static(OtherOtherThing, 'x'), 3)
|
|
|
|
def test_no_dict_no_slots(self):
|
|
self.assertEqual(inspect.getattr_static(1, 'foo', None), None)
|
|
self.assertNotEqual(inspect.getattr_static('foo', 'lower'), None)
|
|
|
|
def test_no_dict_no_slots_instance_member(self):
|
|
# returns descriptor
|
|
with open(__file__) as handle:
|
|
self.assertEqual(inspect.getattr_static(handle, 'name'), type(handle).name)
|
|
|
|
def test_inherited_slots(self):
|
|
# returns descriptor
|
|
class Thing(object):
|
|
__slots__ = ['x']
|
|
def __init__(self):
|
|
self.x = 'foo'
|
|
|
|
class OtherThing(Thing):
|
|
pass
|
|
# it would be nice if this worked...
|
|
# we get the descriptor instead of the instance attribute
|
|
self.assertEqual(inspect.getattr_static(OtherThing(), 'x'), Thing.x)
|
|
|
|
def test_descriptor(self):
|
|
class descriptor(object):
|
|
def __get__(self, instance, owner):
|
|
return 3
|
|
class Foo(object):
|
|
d = descriptor()
|
|
|
|
foo = Foo()
|
|
|
|
# for a non data descriptor we return the instance attribute
|
|
foo.__dict__['d'] = 1
|
|
self.assertEqual(inspect.getattr_static(foo, 'd'), 1)
|
|
|
|
# if the descriptor is a data-desciptor we should return the
|
|
# descriptor
|
|
descriptor.__set__ = lambda s, i, v: None
|
|
self.assertEqual(inspect.getattr_static(foo, 'd'), Foo.__dict__['d'])
|
|
|
|
|
|
def test_metaclass_with_descriptor(self):
|
|
class descriptor(object):
|
|
def __get__(self, instance, owner):
|
|
return 3
|
|
class meta(type):
|
|
d = descriptor()
|
|
class Thing(object, metaclass=meta):
|
|
pass
|
|
self.assertEqual(inspect.getattr_static(Thing, 'd'), meta.__dict__['d'])
|
|
|
|
|
|
def test_class_as_property(self):
|
|
class Base(object):
|
|
foo = 3
|
|
|
|
class Something(Base):
|
|
executed = False
|
|
@property
|
|
def __class__(self):
|
|
self.executed = True
|
|
return object
|
|
|
|
instance = Something()
|
|
self.assertEqual(inspect.getattr_static(instance, 'foo'), 3)
|
|
self.assertFalse(instance.executed)
|
|
self.assertEqual(inspect.getattr_static(Something, 'foo'), 3)
|
|
|
|
def test_mro_as_property(self):
|
|
class Meta(type):
|
|
@property
|
|
def __mro__(self):
|
|
return (object,)
|
|
|
|
class Base(object):
|
|
foo = 3
|
|
|
|
class Something(Base, metaclass=Meta):
|
|
pass
|
|
|
|
self.assertEqual(inspect.getattr_static(Something(), 'foo'), 3)
|
|
self.assertEqual(inspect.getattr_static(Something, 'foo'), 3)
|
|
|
|
def test_dict_as_property(self):
|
|
test = self
|
|
test.called = False
|
|
|
|
class Foo(dict):
|
|
a = 3
|
|
@property
|
|
def __dict__(self):
|
|
test.called = True
|
|
return {}
|
|
|
|
foo = Foo()
|
|
foo.a = 4
|
|
self.assertEqual(inspect.getattr_static(foo, 'a'), 3)
|
|
self.assertFalse(test.called)
|
|
|
|
def test_custom_object_dict(self):
|
|
test = self
|
|
test.called = False
|
|
|
|
class Custom(dict):
|
|
def get(self, key, default=None):
|
|
test.called = True
|
|
super().get(key, default)
|
|
|
|
class Foo(object):
|
|
a = 3
|
|
foo = Foo()
|
|
foo.__dict__ = Custom()
|
|
self.assertEqual(inspect.getattr_static(foo, 'a'), 3)
|
|
self.assertFalse(test.called)
|
|
|
|
def test_metaclass_dict_as_property(self):
|
|
class Meta(type):
|
|
@property
|
|
def __dict__(self):
|
|
self.executed = True
|
|
|
|
class Thing(metaclass=Meta):
|
|
executed = False
|
|
|
|
def __init__(self):
|
|
self.spam = 42
|
|
|
|
instance = Thing()
|
|
self.assertEqual(inspect.getattr_static(instance, "spam"), 42)
|
|
self.assertFalse(Thing.executed)
|
|
|
|
def test_module(self):
|
|
sentinel = object()
|
|
self.assertIsNot(inspect.getattr_static(sys, "version", sentinel),
|
|
sentinel)
|
|
|
|
def test_metaclass_with_metaclass_with_dict_as_property(self):
|
|
class MetaMeta(type):
|
|
@property
|
|
def __dict__(self):
|
|
self.executed = True
|
|
return dict(spam=42)
|
|
|
|
class Meta(type, metaclass=MetaMeta):
|
|
executed = False
|
|
|
|
class Thing(metaclass=Meta):
|
|
pass
|
|
|
|
with self.assertRaises(AttributeError):
|
|
inspect.getattr_static(Thing, "spam")
|
|
self.assertFalse(Thing.executed)
|
|
|
|
class TestGetGeneratorState(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
def number_generator():
|
|
for number in range(5):
|
|
yield number
|
|
self.generator = number_generator()
|
|
|
|
def _generatorstate(self):
|
|
return inspect.getgeneratorstate(self.generator)
|
|
|
|
def test_created(self):
|
|
self.assertEqual(self._generatorstate(), inspect.GEN_CREATED)
|
|
|
|
def test_suspended(self):
|
|
next(self.generator)
|
|
self.assertEqual(self._generatorstate(), inspect.GEN_SUSPENDED)
|
|
|
|
def test_closed_after_exhaustion(self):
|
|
for i in self.generator:
|
|
pass
|
|
self.assertEqual(self._generatorstate(), inspect.GEN_CLOSED)
|
|
|
|
def test_closed_after_immediate_exception(self):
|
|
with self.assertRaises(RuntimeError):
|
|
self.generator.throw(RuntimeError)
|
|
self.assertEqual(self._generatorstate(), inspect.GEN_CLOSED)
|
|
|
|
def test_running(self):
|
|
# As mentioned on issue #10220, checking for the RUNNING state only
|
|
# makes sense inside the generator itself.
|
|
# The following generator checks for this by using the closure's
|
|
# reference to self and the generator state checking helper method
|
|
def running_check_generator():
|
|
for number in range(5):
|
|
self.assertEqual(self._generatorstate(), inspect.GEN_RUNNING)
|
|
yield number
|
|
self.assertEqual(self._generatorstate(), inspect.GEN_RUNNING)
|
|
self.generator = running_check_generator()
|
|
# Running up to the first yield
|
|
next(self.generator)
|
|
# Running after the first yield
|
|
next(self.generator)
|
|
|
|
def test_easy_debugging(self):
|
|
# repr() and str() of a generator state should contain the state name
|
|
names = 'GEN_CREATED GEN_RUNNING GEN_SUSPENDED GEN_CLOSED'.split()
|
|
for name in names:
|
|
state = getattr(inspect, name)
|
|
self.assertIn(name, repr(state))
|
|
self.assertIn(name, str(state))
|
|
|
|
def test_getgeneratorlocals(self):
|
|
def each(lst, a=None):
|
|
b=(1, 2, 3)
|
|
for v in lst:
|
|
if v == 3:
|
|
c = 12
|
|
yield v
|
|
|
|
numbers = each([1, 2, 3])
|
|
self.assertEqual(inspect.getgeneratorlocals(numbers),
|
|
{'a': None, 'lst': [1, 2, 3]})
|
|
next(numbers)
|
|
self.assertEqual(inspect.getgeneratorlocals(numbers),
|
|
{'a': None, 'lst': [1, 2, 3], 'v': 1,
|
|
'b': (1, 2, 3)})
|
|
next(numbers)
|
|
self.assertEqual(inspect.getgeneratorlocals(numbers),
|
|
{'a': None, 'lst': [1, 2, 3], 'v': 2,
|
|
'b': (1, 2, 3)})
|
|
next(numbers)
|
|
self.assertEqual(inspect.getgeneratorlocals(numbers),
|
|
{'a': None, 'lst': [1, 2, 3], 'v': 3,
|
|
'b': (1, 2, 3), 'c': 12})
|
|
try:
|
|
next(numbers)
|
|
except StopIteration:
|
|
pass
|
|
self.assertEqual(inspect.getgeneratorlocals(numbers), {})
|
|
|
|
def test_getgeneratorlocals_empty(self):
|
|
def yield_one():
|
|
yield 1
|
|
one = yield_one()
|
|
self.assertEqual(inspect.getgeneratorlocals(one), {})
|
|
try:
|
|
next(one)
|
|
except StopIteration:
|
|
pass
|
|
self.assertEqual(inspect.getgeneratorlocals(one), {})
|
|
|
|
def test_getgeneratorlocals_error(self):
|
|
self.assertRaises(TypeError, inspect.getgeneratorlocals, 1)
|
|
self.assertRaises(TypeError, inspect.getgeneratorlocals, lambda x: True)
|
|
self.assertRaises(TypeError, inspect.getgeneratorlocals, set)
|
|
self.assertRaises(TypeError, inspect.getgeneratorlocals, (2,3))
|
|
|
|
|
|
class TestGetCoroutineState(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
@types.coroutine
|
|
def number_coroutine():
|
|
for number in range(5):
|
|
yield number
|
|
async def coroutine():
|
|
await number_coroutine()
|
|
self.coroutine = coroutine()
|
|
|
|
def tearDown(self):
|
|
self.coroutine.close()
|
|
|
|
def _coroutinestate(self):
|
|
return inspect.getcoroutinestate(self.coroutine)
|
|
|
|
def test_created(self):
|
|
self.assertEqual(self._coroutinestate(), inspect.CORO_CREATED)
|
|
|
|
def test_suspended(self):
|
|
self.coroutine.send(None)
|
|
self.assertEqual(self._coroutinestate(), inspect.CORO_SUSPENDED)
|
|
|
|
def test_closed_after_exhaustion(self):
|
|
while True:
|
|
try:
|
|
self.coroutine.send(None)
|
|
except StopIteration:
|
|
break
|
|
|
|
self.assertEqual(self._coroutinestate(), inspect.CORO_CLOSED)
|
|
|
|
def test_closed_after_immediate_exception(self):
|
|
with self.assertRaises(RuntimeError):
|
|
self.coroutine.throw(RuntimeError)
|
|
self.assertEqual(self._coroutinestate(), inspect.CORO_CLOSED)
|
|
|
|
def test_easy_debugging(self):
|
|
# repr() and str() of a coroutine state should contain the state name
|
|
names = 'CORO_CREATED CORO_RUNNING CORO_SUSPENDED CORO_CLOSED'.split()
|
|
for name in names:
|
|
state = getattr(inspect, name)
|
|
self.assertIn(name, repr(state))
|
|
self.assertIn(name, str(state))
|
|
|
|
def test_getcoroutinelocals(self):
|
|
@types.coroutine
|
|
def gencoro():
|
|
yield
|
|
|
|
gencoro = gencoro()
|
|
async def func(a=None):
|
|
b = 'spam'
|
|
await gencoro
|
|
|
|
coro = func()
|
|
self.assertEqual(inspect.getcoroutinelocals(coro),
|
|
{'a': None, 'gencoro': gencoro})
|
|
coro.send(None)
|
|
self.assertEqual(inspect.getcoroutinelocals(coro),
|
|
{'a': None, 'gencoro': gencoro, 'b': 'spam'})
|
|
|
|
|
|
class MySignature(inspect.Signature):
|
|
# Top-level to make it picklable;
|
|
# used in test_signature_object_pickle
|
|
pass
|
|
|
|
class MyParameter(inspect.Parameter):
|
|
# Top-level to make it picklable;
|
|
# used in test_signature_object_pickle
|
|
pass
|
|
|
|
|
|
|
|
class TestSignatureObject(unittest.TestCase):
|
|
@staticmethod
|
|
def signature(func, **kw):
|
|
sig = inspect.signature(func, **kw)
|
|
return (tuple((param.name,
|
|
(... if param.default is param.empty else param.default),
|
|
(... if param.annotation is param.empty
|
|
else param.annotation),
|
|
str(param.kind).lower())
|
|
for param in sig.parameters.values()),
|
|
(... if sig.return_annotation is sig.empty
|
|
else sig.return_annotation))
|
|
|
|
def test_signature_object(self):
|
|
S = inspect.Signature
|
|
P = inspect.Parameter
|
|
|
|
self.assertEqual(str(S()), '()')
|
|
|
|
def test(po, pk, pod=42, pkd=100, *args, ko, **kwargs):
|
|
pass
|
|
sig = inspect.signature(test)
|
|
po = sig.parameters['po'].replace(kind=P.POSITIONAL_ONLY)
|
|
pod = sig.parameters['pod'].replace(kind=P.POSITIONAL_ONLY)
|
|
pk = sig.parameters['pk']
|
|
pkd = sig.parameters['pkd']
|
|
args = sig.parameters['args']
|
|
ko = sig.parameters['ko']
|
|
kwargs = sig.parameters['kwargs']
|
|
|
|
S((po, pk, args, ko, kwargs))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'wrong parameter order'):
|
|
S((pk, po, args, ko, kwargs))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'wrong parameter order'):
|
|
S((po, args, pk, ko, kwargs))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'wrong parameter order'):
|
|
S((args, po, pk, ko, kwargs))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'wrong parameter order'):
|
|
S((po, pk, args, kwargs, ko))
|
|
|
|
kwargs2 = kwargs.replace(name='args')
|
|
with self.assertRaisesRegex(ValueError, 'duplicate parameter name'):
|
|
S((po, pk, args, kwargs2, ko))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'follows default argument'):
|
|
S((pod, po))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'follows default argument'):
|
|
S((po, pkd, pk))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'follows default argument'):
|
|
S((pkd, pk))
|
|
|
|
self.assertTrue(repr(sig).startswith('<Signature'))
|
|
self.assertTrue('(po, pk' in repr(sig))
|
|
|
|
def test_signature_object_pickle(self):
|
|
def foo(a, b, *, c:1={}, **kw) -> {42:'ham'}: pass
|
|
foo_partial = functools.partial(foo, a=1)
|
|
|
|
sig = inspect.signature(foo_partial)
|
|
|
|
for ver in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.subTest(pickle_ver=ver, subclass=False):
|
|
sig_pickled = pickle.loads(pickle.dumps(sig, ver))
|
|
self.assertEqual(sig, sig_pickled)
|
|
|
|
# Test that basic sub-classing works
|
|
sig = inspect.signature(foo)
|
|
myparam = MyParameter(name='z', kind=inspect.Parameter.POSITIONAL_ONLY)
|
|
myparams = collections.OrderedDict(sig.parameters, a=myparam)
|
|
mysig = MySignature().replace(parameters=myparams.values(),
|
|
return_annotation=sig.return_annotation)
|
|
self.assertTrue(isinstance(mysig, MySignature))
|
|
self.assertTrue(isinstance(mysig.parameters['z'], MyParameter))
|
|
|
|
for ver in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.subTest(pickle_ver=ver, subclass=True):
|
|
sig_pickled = pickle.loads(pickle.dumps(mysig, ver))
|
|
self.assertEqual(mysig, sig_pickled)
|
|
self.assertTrue(isinstance(sig_pickled, MySignature))
|
|
self.assertTrue(isinstance(sig_pickled.parameters['z'],
|
|
MyParameter))
|
|
|
|
def test_signature_immutability(self):
|
|
def test(a):
|
|
pass
|
|
sig = inspect.signature(test)
|
|
|
|
with self.assertRaises(AttributeError):
|
|
sig.foo = 'bar'
|
|
|
|
with self.assertRaises(TypeError):
|
|
sig.parameters['a'] = None
|
|
|
|
def test_signature_on_noarg(self):
|
|
def test():
|
|
pass
|
|
self.assertEqual(self.signature(test), ((), ...))
|
|
|
|
def test_signature_on_wargs(self):
|
|
def test(a, b:'foo') -> 123:
|
|
pass
|
|
self.assertEqual(self.signature(test),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', ..., 'foo', "positional_or_keyword")),
|
|
123))
|
|
|
|
def test_signature_on_wkwonly(self):
|
|
def test(*, a:float, b:str) -> int:
|
|
pass
|
|
self.assertEqual(self.signature(test),
|
|
((('a', ..., float, "keyword_only"),
|
|
('b', ..., str, "keyword_only")),
|
|
int))
|
|
|
|
def test_signature_on_complex_args(self):
|
|
def test(a, b:'foo'=10, *args:'bar', spam:'baz', ham=123, **kwargs:int):
|
|
pass
|
|
self.assertEqual(self.signature(test),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', 10, 'foo', "positional_or_keyword"),
|
|
('args', ..., 'bar', "var_positional"),
|
|
('spam', ..., 'baz', "keyword_only"),
|
|
('ham', 123, ..., "keyword_only"),
|
|
('kwargs', ..., int, "var_keyword")),
|
|
...))
|
|
|
|
def test_signature_without_self(self):
|
|
def test_args_only(*args): # NOQA
|
|
pass
|
|
|
|
def test_args_kwargs_only(*args, **kwargs): # NOQA
|
|
pass
|
|
|
|
class A:
|
|
@classmethod
|
|
def test_classmethod(*args): # NOQA
|
|
pass
|
|
|
|
@staticmethod
|
|
def test_staticmethod(*args): # NOQA
|
|
pass
|
|
|
|
f1 = functools.partialmethod((test_classmethod), 1)
|
|
f2 = functools.partialmethod((test_args_only), 1)
|
|
f3 = functools.partialmethod((test_staticmethod), 1)
|
|
f4 = functools.partialmethod((test_args_kwargs_only),1)
|
|
|
|
self.assertEqual(self.signature(test_args_only),
|
|
((('args', ..., ..., 'var_positional'),), ...))
|
|
self.assertEqual(self.signature(test_args_kwargs_only),
|
|
((('args', ..., ..., 'var_positional'),
|
|
('kwargs', ..., ..., 'var_keyword')), ...))
|
|
self.assertEqual(self.signature(A.f1),
|
|
((('args', ..., ..., 'var_positional'),), ...))
|
|
self.assertEqual(self.signature(A.f2),
|
|
((('args', ..., ..., 'var_positional'),), ...))
|
|
self.assertEqual(self.signature(A.f3),
|
|
((('args', ..., ..., 'var_positional'),), ...))
|
|
self.assertEqual(self.signature(A.f4),
|
|
((('args', ..., ..., 'var_positional'),
|
|
('kwargs', ..., ..., 'var_keyword')), ...))
|
|
@cpython_only
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_signature_on_builtins(self):
|
|
import _testcapi
|
|
|
|
def test_unbound_method(o):
|
|
"""Use this to test unbound methods (things that should have a self)"""
|
|
signature = inspect.signature(o)
|
|
self.assertTrue(isinstance(signature, inspect.Signature))
|
|
self.assertEqual(list(signature.parameters.values())[0].name, 'self')
|
|
return signature
|
|
|
|
def test_callable(o):
|
|
"""Use this to test bound methods or normal callables (things that don't expect self)"""
|
|
signature = inspect.signature(o)
|
|
self.assertTrue(isinstance(signature, inspect.Signature))
|
|
if signature.parameters:
|
|
self.assertNotEqual(list(signature.parameters.values())[0].name, 'self')
|
|
return signature
|
|
|
|
signature = test_callable(_testcapi.docstring_with_signature_with_defaults)
|
|
def p(name): return signature.parameters[name].default
|
|
self.assertEqual(p('s'), 'avocado')
|
|
self.assertEqual(p('b'), b'bytes')
|
|
self.assertEqual(p('d'), 3.14)
|
|
self.assertEqual(p('i'), 35)
|
|
self.assertEqual(p('n'), None)
|
|
self.assertEqual(p('t'), True)
|
|
self.assertEqual(p('f'), False)
|
|
self.assertEqual(p('local'), 3)
|
|
self.assertEqual(p('sys'), sys.maxsize)
|
|
self.assertEqual(p('exp'), sys.maxsize - 1)
|
|
|
|
test_callable(object)
|
|
|
|
# normal method
|
|
# (PyMethodDescr_Type, "method_descriptor")
|
|
test_unbound_method(_pickle.Pickler.dump)
|
|
d = _pickle.Pickler(io.StringIO())
|
|
test_callable(d.dump)
|
|
|
|
# static method
|
|
test_callable(str.maketrans)
|
|
test_callable('abc'.maketrans)
|
|
|
|
# class method
|
|
test_callable(dict.fromkeys)
|
|
test_callable({}.fromkeys)
|
|
|
|
# wrapper around slot (PyWrapperDescr_Type, "wrapper_descriptor")
|
|
test_unbound_method(type.__call__)
|
|
test_unbound_method(int.__add__)
|
|
test_callable((3).__add__)
|
|
|
|
# _PyMethodWrapper_Type
|
|
# support for 'method-wrapper'
|
|
test_callable(min.__call__)
|
|
|
|
# This doesn't work now.
|
|
# (We don't have a valid signature for "type" in 3.4)
|
|
with self.assertRaisesRegex(ValueError, "no signature found"):
|
|
class ThisWorksNow:
|
|
__call__ = type
|
|
test_callable(ThisWorksNow())
|
|
|
|
# Regression test for issue #20786
|
|
test_unbound_method(dict.__delitem__)
|
|
test_unbound_method(property.__delete__)
|
|
|
|
# Regression test for issue #20586
|
|
test_callable(_testcapi.docstring_with_signature_but_no_doc)
|
|
|
|
@cpython_only
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_signature_on_decorated_builtins(self):
|
|
import _testcapi
|
|
func = _testcapi.docstring_with_signature_with_defaults
|
|
|
|
def decorator(func):
|
|
@functools.wraps(func)
|
|
def wrapper(*args, **kwargs) -> int:
|
|
return func(*args, **kwargs)
|
|
return wrapper
|
|
|
|
decorated_func = decorator(func)
|
|
|
|
self.assertEqual(inspect.signature(func),
|
|
inspect.signature(decorated_func))
|
|
|
|
def wrapper_like(*args, **kwargs) -> int: pass
|
|
self.assertEqual(inspect.signature(decorated_func,
|
|
follow_wrapped=False),
|
|
inspect.signature(wrapper_like))
|
|
|
|
@cpython_only
|
|
def test_signature_on_builtins_no_signature(self):
|
|
import _testcapi
|
|
with self.assertRaisesRegex(ValueError,
|
|
'no signature found for builtin'):
|
|
inspect.signature(_testcapi.docstring_no_signature)
|
|
|
|
with self.assertRaisesRegex(ValueError,
|
|
'no signature found for builtin'):
|
|
inspect.signature(str)
|
|
|
|
def test_signature_on_non_function(self):
|
|
with self.assertRaisesRegex(TypeError, 'is not a callable object'):
|
|
inspect.signature(42)
|
|
|
|
def test_signature_from_functionlike_object(self):
|
|
def func(a,b, *args, kwonly=True, kwonlyreq, **kwargs):
|
|
pass
|
|
|
|
class funclike:
|
|
# Has to be callable, and have correct
|
|
# __code__, __annotations__, __defaults__, __name__,
|
|
# and __kwdefaults__ attributes
|
|
|
|
def __init__(self, func):
|
|
self.__name__ = func.__name__
|
|
self.__code__ = func.__code__
|
|
self.__annotations__ = func.__annotations__
|
|
self.__defaults__ = func.__defaults__
|
|
self.__kwdefaults__ = func.__kwdefaults__
|
|
self.func = func
|
|
|
|
def __call__(self, *args, **kwargs):
|
|
return self.func(*args, **kwargs)
|
|
|
|
sig_func = inspect.Signature.from_callable(func)
|
|
|
|
sig_funclike = inspect.Signature.from_callable(funclike(func))
|
|
self.assertEqual(sig_funclike, sig_func)
|
|
|
|
sig_funclike = inspect.signature(funclike(func))
|
|
self.assertEqual(sig_funclike, sig_func)
|
|
|
|
# If object is not a duck type of function, then
|
|
# signature will try to get a signature for its '__call__'
|
|
# method
|
|
fl = funclike(func)
|
|
del fl.__defaults__
|
|
self.assertEqual(self.signature(fl),
|
|
((('args', ..., ..., "var_positional"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
# Test with cython-like builtins:
|
|
_orig_isdesc = inspect.ismethoddescriptor
|
|
def _isdesc(obj):
|
|
if hasattr(obj, '_builtinmock'):
|
|
return True
|
|
return _orig_isdesc(obj)
|
|
|
|
with unittest.mock.patch('inspect.ismethoddescriptor', _isdesc):
|
|
builtin_func = funclike(func)
|
|
# Make sure that our mock setup is working
|
|
self.assertFalse(inspect.ismethoddescriptor(builtin_func))
|
|
builtin_func._builtinmock = True
|
|
self.assertTrue(inspect.ismethoddescriptor(builtin_func))
|
|
self.assertEqual(inspect.signature(builtin_func), sig_func)
|
|
|
|
def test_signature_functionlike_class(self):
|
|
# We only want to duck type function-like objects,
|
|
# not classes.
|
|
|
|
def func(a,b, *args, kwonly=True, kwonlyreq, **kwargs):
|
|
pass
|
|
|
|
class funclike:
|
|
def __init__(self, marker):
|
|
pass
|
|
|
|
__name__ = func.__name__
|
|
__code__ = func.__code__
|
|
__annotations__ = func.__annotations__
|
|
__defaults__ = func.__defaults__
|
|
__kwdefaults__ = func.__kwdefaults__
|
|
|
|
self.assertEqual(str(inspect.signature(funclike)), '(marker)')
|
|
|
|
def test_signature_on_method(self):
|
|
class Test:
|
|
def __init__(*args):
|
|
pass
|
|
def m1(self, arg1, arg2=1) -> int:
|
|
pass
|
|
def m2(*args):
|
|
pass
|
|
def __call__(*, a):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(Test().m1),
|
|
((('arg1', ..., ..., "positional_or_keyword"),
|
|
('arg2', 1, ..., "positional_or_keyword")),
|
|
int))
|
|
|
|
self.assertEqual(self.signature(Test().m2),
|
|
((('args', ..., ..., "var_positional"),),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(Test),
|
|
((('args', ..., ..., "var_positional"),),
|
|
...))
|
|
|
|
with self.assertRaisesRegex(ValueError, 'invalid method signature'):
|
|
self.signature(Test())
|
|
|
|
def test_signature_wrapped_bound_method(self):
|
|
# Issue 24298
|
|
class Test:
|
|
def m1(self, arg1, arg2=1) -> int:
|
|
pass
|
|
@functools.wraps(Test().m1)
|
|
def m1d(*args, **kwargs):
|
|
pass
|
|
self.assertEqual(self.signature(m1d),
|
|
((('arg1', ..., ..., "positional_or_keyword"),
|
|
('arg2', 1, ..., "positional_or_keyword")),
|
|
int))
|
|
|
|
def test_signature_on_classmethod(self):
|
|
class Test:
|
|
@classmethod
|
|
def foo(cls, arg1, *, arg2=1):
|
|
pass
|
|
|
|
meth = Test().foo
|
|
self.assertEqual(self.signature(meth),
|
|
((('arg1', ..., ..., "positional_or_keyword"),
|
|
('arg2', 1, ..., "keyword_only")),
|
|
...))
|
|
|
|
meth = Test.foo
|
|
self.assertEqual(self.signature(meth),
|
|
((('arg1', ..., ..., "positional_or_keyword"),
|
|
('arg2', 1, ..., "keyword_only")),
|
|
...))
|
|
|
|
def test_signature_on_staticmethod(self):
|
|
class Test:
|
|
@staticmethod
|
|
def foo(cls, *, arg):
|
|
pass
|
|
|
|
meth = Test().foo
|
|
self.assertEqual(self.signature(meth),
|
|
((('cls', ..., ..., "positional_or_keyword"),
|
|
('arg', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
meth = Test.foo
|
|
self.assertEqual(self.signature(meth),
|
|
((('cls', ..., ..., "positional_or_keyword"),
|
|
('arg', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
def test_signature_on_partial(self):
|
|
from functools import partial
|
|
|
|
Parameter = inspect.Parameter
|
|
|
|
def test():
|
|
pass
|
|
|
|
self.assertEqual(self.signature(partial(test)), ((), ...))
|
|
|
|
with self.assertRaisesRegex(ValueError, "has incorrect arguments"):
|
|
inspect.signature(partial(test, 1))
|
|
|
|
with self.assertRaisesRegex(ValueError, "has incorrect arguments"):
|
|
inspect.signature(partial(test, a=1))
|
|
|
|
def test(a, b, *, c, d):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(partial(test)),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', ..., ..., "positional_or_keyword"),
|
|
('c', ..., ..., "keyword_only"),
|
|
('d', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, 1)),
|
|
((('b', ..., ..., "positional_or_keyword"),
|
|
('c', ..., ..., "keyword_only"),
|
|
('d', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, 1, c=2)),
|
|
((('b', ..., ..., "positional_or_keyword"),
|
|
('c', 2, ..., "keyword_only"),
|
|
('d', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, b=1, c=2)),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', 1, ..., "keyword_only"),
|
|
('c', 2, ..., "keyword_only"),
|
|
('d', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, 0, b=1, c=2)),
|
|
((('b', 1, ..., "keyword_only"),
|
|
('c', 2, ..., "keyword_only"),
|
|
('d', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, a=1)),
|
|
((('a', 1, ..., "keyword_only"),
|
|
('b', ..., ..., "keyword_only"),
|
|
('c', ..., ..., "keyword_only"),
|
|
('d', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
def test(a, *args, b, **kwargs):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(partial(test, 1)),
|
|
((('args', ..., ..., "var_positional"),
|
|
('b', ..., ..., "keyword_only"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, a=1)),
|
|
((('a', 1, ..., "keyword_only"),
|
|
('b', ..., ..., "keyword_only"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, 1, 2, 3)),
|
|
((('args', ..., ..., "var_positional"),
|
|
('b', ..., ..., "keyword_only"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, 1, 2, 3, test=True)),
|
|
((('args', ..., ..., "var_positional"),
|
|
('b', ..., ..., "keyword_only"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, 1, 2, 3, test=1, b=0)),
|
|
((('args', ..., ..., "var_positional"),
|
|
('b', 0, ..., "keyword_only"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, b=0)),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('args', ..., ..., "var_positional"),
|
|
('b', 0, ..., "keyword_only"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, b=0, test=1)),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('args', ..., ..., "var_positional"),
|
|
('b', 0, ..., "keyword_only"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...))
|
|
|
|
def test(a, b, c:int) -> 42:
|
|
pass
|
|
|
|
sig = test.__signature__ = inspect.signature(test)
|
|
|
|
self.assertEqual(self.signature(partial(partial(test, 1))),
|
|
((('b', ..., ..., "positional_or_keyword"),
|
|
('c', ..., int, "positional_or_keyword")),
|
|
42))
|
|
|
|
self.assertEqual(self.signature(partial(partial(test, 1), 2)),
|
|
((('c', ..., int, "positional_or_keyword"),),
|
|
42))
|
|
|
|
psig = inspect.signature(partial(partial(test, 1), 2))
|
|
|
|
def foo(a):
|
|
return a
|
|
_foo = partial(partial(foo, a=10), a=20)
|
|
self.assertEqual(self.signature(_foo),
|
|
((('a', 20, ..., "keyword_only"),),
|
|
...))
|
|
# check that we don't have any side-effects in signature(),
|
|
# and the partial object is still functioning
|
|
self.assertEqual(_foo(), 20)
|
|
|
|
def foo(a, b, c):
|
|
return a, b, c
|
|
_foo = partial(partial(foo, 1, b=20), b=30)
|
|
|
|
self.assertEqual(self.signature(_foo),
|
|
((('b', 30, ..., "keyword_only"),
|
|
('c', ..., ..., "keyword_only")),
|
|
...))
|
|
self.assertEqual(_foo(c=10), (1, 30, 10))
|
|
|
|
def foo(a, b, c, *, d):
|
|
return a, b, c, d
|
|
_foo = partial(partial(foo, d=20, c=20), b=10, d=30)
|
|
self.assertEqual(self.signature(_foo),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', 10, ..., "keyword_only"),
|
|
('c', 20, ..., "keyword_only"),
|
|
('d', 30, ..., "keyword_only"),
|
|
),
|
|
...))
|
|
ba = inspect.signature(_foo).bind(a=200, b=11)
|
|
self.assertEqual(_foo(*ba.args, **ba.kwargs), (200, 11, 20, 30))
|
|
|
|
def foo(a=1, b=2, c=3):
|
|
return a, b, c
|
|
_foo = partial(foo, c=13) # (a=1, b=2, *, c=13)
|
|
|
|
ba = inspect.signature(_foo).bind(a=11)
|
|
self.assertEqual(_foo(*ba.args, **ba.kwargs), (11, 2, 13))
|
|
|
|
ba = inspect.signature(_foo).bind(11, 12)
|
|
self.assertEqual(_foo(*ba.args, **ba.kwargs), (11, 12, 13))
|
|
|
|
ba = inspect.signature(_foo).bind(11, b=12)
|
|
self.assertEqual(_foo(*ba.args, **ba.kwargs), (11, 12, 13))
|
|
|
|
ba = inspect.signature(_foo).bind(b=12)
|
|
self.assertEqual(_foo(*ba.args, **ba.kwargs), (1, 12, 13))
|
|
|
|
_foo = partial(_foo, b=10, c=20)
|
|
ba = inspect.signature(_foo).bind(12)
|
|
self.assertEqual(_foo(*ba.args, **ba.kwargs), (12, 10, 20))
|
|
|
|
|
|
def foo(a, b, c, d, **kwargs):
|
|
pass
|
|
sig = inspect.signature(foo)
|
|
params = sig.parameters.copy()
|
|
params['a'] = params['a'].replace(kind=Parameter.POSITIONAL_ONLY)
|
|
params['b'] = params['b'].replace(kind=Parameter.POSITIONAL_ONLY)
|
|
foo.__signature__ = inspect.Signature(params.values())
|
|
sig = inspect.signature(foo)
|
|
self.assertEqual(str(sig), '(a, b, /, c, d, **kwargs)')
|
|
|
|
self.assertEqual(self.signature(partial(foo, 1)),
|
|
((('b', ..., ..., 'positional_only'),
|
|
('c', ..., ..., 'positional_or_keyword'),
|
|
('d', ..., ..., 'positional_or_keyword'),
|
|
('kwargs', ..., ..., 'var_keyword')),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(foo, 1, 2)),
|
|
((('c', ..., ..., 'positional_or_keyword'),
|
|
('d', ..., ..., 'positional_or_keyword'),
|
|
('kwargs', ..., ..., 'var_keyword')),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(foo, 1, 2, 3)),
|
|
((('d', ..., ..., 'positional_or_keyword'),
|
|
('kwargs', ..., ..., 'var_keyword')),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(foo, 1, 2, c=3)),
|
|
((('c', 3, ..., 'keyword_only'),
|
|
('d', ..., ..., 'keyword_only'),
|
|
('kwargs', ..., ..., 'var_keyword')),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(foo, 1, c=3)),
|
|
((('b', ..., ..., 'positional_only'),
|
|
('c', 3, ..., 'keyword_only'),
|
|
('d', ..., ..., 'keyword_only'),
|
|
('kwargs', ..., ..., 'var_keyword')),
|
|
...))
|
|
|
|
def test_signature_on_partialmethod(self):
|
|
from functools import partialmethod
|
|
|
|
class Spam:
|
|
def test():
|
|
pass
|
|
ham = partialmethod(test)
|
|
|
|
with self.assertRaisesRegex(ValueError, "has incorrect arguments"):
|
|
inspect.signature(Spam.ham)
|
|
|
|
class Spam:
|
|
def test(it, a, *, c) -> 'spam':
|
|
pass
|
|
ham = partialmethod(test, c=1)
|
|
|
|
self.assertEqual(self.signature(Spam.ham),
|
|
((('it', ..., ..., 'positional_or_keyword'),
|
|
('a', ..., ..., 'positional_or_keyword'),
|
|
('c', 1, ..., 'keyword_only')),
|
|
'spam'))
|
|
|
|
self.assertEqual(self.signature(Spam().ham),
|
|
((('a', ..., ..., 'positional_or_keyword'),
|
|
('c', 1, ..., 'keyword_only')),
|
|
'spam'))
|
|
|
|
def test_signature_on_fake_partialmethod(self):
|
|
def foo(a): pass
|
|
foo._partialmethod = 'spam'
|
|
self.assertEqual(str(inspect.signature(foo)), '(a)')
|
|
|
|
def test_signature_on_decorated(self):
|
|
import functools
|
|
|
|
def decorator(func):
|
|
@functools.wraps(func)
|
|
def wrapper(*args, **kwargs) -> int:
|
|
return func(*args, **kwargs)
|
|
return wrapper
|
|
|
|
class Foo:
|
|
@decorator
|
|
def bar(self, a, b):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(Foo.bar),
|
|
((('self', ..., ..., "positional_or_keyword"),
|
|
('a', ..., ..., "positional_or_keyword"),
|
|
('b', ..., ..., "positional_or_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(Foo().bar),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', ..., ..., "positional_or_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(Foo.bar, follow_wrapped=False),
|
|
((('args', ..., ..., "var_positional"),
|
|
('kwargs', ..., ..., "var_keyword")),
|
|
...)) # functools.wraps will copy __annotations__
|
|
# from "func" to "wrapper", hence no
|
|
# return_annotation
|
|
|
|
# Test that we handle method wrappers correctly
|
|
def decorator(func):
|
|
@functools.wraps(func)
|
|
def wrapper(*args, **kwargs) -> int:
|
|
return func(42, *args, **kwargs)
|
|
sig = inspect.signature(func)
|
|
new_params = tuple(sig.parameters.values())[1:]
|
|
wrapper.__signature__ = sig.replace(parameters=new_params)
|
|
return wrapper
|
|
|
|
class Foo:
|
|
@decorator
|
|
def __call__(self, a, b):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(Foo.__call__),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', ..., ..., "positional_or_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(Foo().__call__),
|
|
((('b', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
# Test we handle __signature__ partway down the wrapper stack
|
|
def wrapped_foo_call():
|
|
pass
|
|
wrapped_foo_call.__wrapped__ = Foo.__call__
|
|
|
|
self.assertEqual(self.signature(wrapped_foo_call),
|
|
((('a', ..., ..., "positional_or_keyword"),
|
|
('b', ..., ..., "positional_or_keyword")),
|
|
...))
|
|
|
|
|
|
def test_signature_on_class(self):
|
|
class C:
|
|
def __init__(self, a):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(C),
|
|
((('a', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
class CM(type):
|
|
def __call__(cls, a):
|
|
pass
|
|
class C(metaclass=CM):
|
|
def __init__(self, b):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(C),
|
|
((('a', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
class CM(type):
|
|
def __new__(mcls, name, bases, dct, *, foo=1):
|
|
return super().__new__(mcls, name, bases, dct)
|
|
class C(metaclass=CM):
|
|
def __init__(self, b):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(C),
|
|
((('b', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(CM),
|
|
((('name', ..., ..., "positional_or_keyword"),
|
|
('bases', ..., ..., "positional_or_keyword"),
|
|
('dct', ..., ..., "positional_or_keyword"),
|
|
('foo', 1, ..., "keyword_only")),
|
|
...))
|
|
|
|
class CMM(type):
|
|
def __new__(mcls, name, bases, dct, *, foo=1):
|
|
return super().__new__(mcls, name, bases, dct)
|
|
def __call__(cls, nm, bs, dt):
|
|
return type(nm, bs, dt)
|
|
class CM(type, metaclass=CMM):
|
|
def __new__(mcls, name, bases, dct, *, bar=2):
|
|
return super().__new__(mcls, name, bases, dct)
|
|
class C(metaclass=CM):
|
|
def __init__(self, b):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(CMM),
|
|
((('name', ..., ..., "positional_or_keyword"),
|
|
('bases', ..., ..., "positional_or_keyword"),
|
|
('dct', ..., ..., "positional_or_keyword"),
|
|
('foo', 1, ..., "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(CM),
|
|
((('nm', ..., ..., "positional_or_keyword"),
|
|
('bs', ..., ..., "positional_or_keyword"),
|
|
('dt', ..., ..., "positional_or_keyword")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(C),
|
|
((('b', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
class CM(type):
|
|
def __init__(cls, name, bases, dct, *, bar=2):
|
|
return super().__init__(name, bases, dct)
|
|
class C(metaclass=CM):
|
|
def __init__(self, b):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(CM),
|
|
((('name', ..., ..., "positional_or_keyword"),
|
|
('bases', ..., ..., "positional_or_keyword"),
|
|
('dct', ..., ..., "positional_or_keyword"),
|
|
('bar', 2, ..., "keyword_only")),
|
|
...))
|
|
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_signature_on_class_without_init(self):
|
|
# Test classes without user-defined __init__ or __new__
|
|
class C: pass
|
|
self.assertEqual(str(inspect.signature(C)), '()')
|
|
class D(C): pass
|
|
self.assertEqual(str(inspect.signature(D)), '()')
|
|
|
|
# Test meta-classes without user-defined __init__ or __new__
|
|
class C(type): pass
|
|
class D(C): pass
|
|
with self.assertRaisesRegex(ValueError, "callable.*is not supported"):
|
|
self.assertEqual(inspect.signature(C), None)
|
|
with self.assertRaisesRegex(ValueError, "callable.*is not supported"):
|
|
self.assertEqual(inspect.signature(D), None)
|
|
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_signature_on_builtin_class(self):
|
|
self.assertEqual(str(inspect.signature(_pickle.Pickler)),
|
|
'(file, protocol=None, fix_imports=True)')
|
|
|
|
class P(_pickle.Pickler): pass
|
|
class EmptyTrait: pass
|
|
class P2(EmptyTrait, P): pass
|
|
self.assertEqual(str(inspect.signature(P)),
|
|
'(file, protocol=None, fix_imports=True)')
|
|
self.assertEqual(str(inspect.signature(P2)),
|
|
'(file, protocol=None, fix_imports=True)')
|
|
|
|
class P3(P2):
|
|
def __init__(self, spam):
|
|
pass
|
|
self.assertEqual(str(inspect.signature(P3)), '(spam)')
|
|
|
|
class MetaP(type):
|
|
def __call__(cls, foo, bar):
|
|
pass
|
|
class P4(P2, metaclass=MetaP):
|
|
pass
|
|
self.assertEqual(str(inspect.signature(P4)), '(foo, bar)')
|
|
|
|
def test_signature_on_callable_objects(self):
|
|
class Foo:
|
|
def __call__(self, a):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(Foo()),
|
|
((('a', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
class Spam:
|
|
pass
|
|
with self.assertRaisesRegex(TypeError, "is not a callable object"):
|
|
inspect.signature(Spam())
|
|
|
|
class Bar(Spam, Foo):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(Bar()),
|
|
((('a', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
class Wrapped:
|
|
pass
|
|
Wrapped.__wrapped__ = lambda a: None
|
|
self.assertEqual(self.signature(Wrapped),
|
|
((('a', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
# wrapper loop:
|
|
Wrapped.__wrapped__ = Wrapped
|
|
with self.assertRaisesRegex(ValueError, 'wrapper loop'):
|
|
self.signature(Wrapped)
|
|
|
|
def test_signature_on_lambdas(self):
|
|
self.assertEqual(self.signature((lambda a=10: a)),
|
|
((('a', 10, ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
def test_signature_equality(self):
|
|
def foo(a, *, b:int) -> float: pass
|
|
self.assertFalse(inspect.signature(foo) == 42)
|
|
self.assertTrue(inspect.signature(foo) != 42)
|
|
self.assertTrue(inspect.signature(foo) == EqualsToAll())
|
|
self.assertFalse(inspect.signature(foo) != EqualsToAll())
|
|
|
|
def bar(a, *, b:int) -> float: pass
|
|
self.assertTrue(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertFalse(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def bar(a, *, b:int) -> int: pass
|
|
self.assertFalse(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertTrue(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertNotEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def bar(a, *, b:int): pass
|
|
self.assertFalse(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertTrue(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertNotEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def bar(a, *, b:int=42) -> float: pass
|
|
self.assertFalse(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertTrue(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertNotEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def bar(a, *, c) -> float: pass
|
|
self.assertFalse(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertTrue(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertNotEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def bar(a, b:int) -> float: pass
|
|
self.assertFalse(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertTrue(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertNotEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
def spam(b:int, a) -> float: pass
|
|
self.assertFalse(inspect.signature(spam) == inspect.signature(bar))
|
|
self.assertTrue(inspect.signature(spam) != inspect.signature(bar))
|
|
self.assertNotEqual(
|
|
hash(inspect.signature(spam)), hash(inspect.signature(bar)))
|
|
|
|
def foo(*, a, b, c): pass
|
|
def bar(*, c, b, a): pass
|
|
self.assertTrue(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertFalse(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def foo(*, a=1, b, c): pass
|
|
def bar(*, c, b, a=1): pass
|
|
self.assertTrue(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertFalse(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def foo(pos, *, a=1, b, c): pass
|
|
def bar(pos, *, c, b, a=1): pass
|
|
self.assertTrue(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertFalse(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def foo(pos, *, a, b, c): pass
|
|
def bar(pos, *, c, b, a=1): pass
|
|
self.assertFalse(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertTrue(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertNotEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def foo(pos, *args, a=42, b, c, **kwargs:int): pass
|
|
def bar(pos, *args, c, b, a=42, **kwargs:int): pass
|
|
self.assertTrue(inspect.signature(foo) == inspect.signature(bar))
|
|
self.assertFalse(inspect.signature(foo) != inspect.signature(bar))
|
|
self.assertEqual(
|
|
hash(inspect.signature(foo)), hash(inspect.signature(bar)))
|
|
|
|
def test_signature_hashable(self):
|
|
S = inspect.Signature
|
|
P = inspect.Parameter
|
|
|
|
def foo(a): pass
|
|
foo_sig = inspect.signature(foo)
|
|
|
|
manual_sig = S(parameters=[P('a', P.POSITIONAL_OR_KEYWORD)])
|
|
|
|
self.assertEqual(hash(foo_sig), hash(manual_sig))
|
|
self.assertNotEqual(hash(foo_sig),
|
|
hash(manual_sig.replace(return_annotation='spam')))
|
|
|
|
def bar(a) -> 1: pass
|
|
self.assertNotEqual(hash(foo_sig), hash(inspect.signature(bar)))
|
|
|
|
def foo(a={}): pass
|
|
with self.assertRaisesRegex(TypeError, 'unhashable type'):
|
|
hash(inspect.signature(foo))
|
|
|
|
def foo(a) -> {}: pass
|
|
with self.assertRaisesRegex(TypeError, 'unhashable type'):
|
|
hash(inspect.signature(foo))
|
|
|
|
def test_signature_str(self):
|
|
def foo(a:int=1, *, b, c=None, **kwargs) -> 42:
|
|
pass
|
|
self.assertEqual(str(inspect.signature(foo)),
|
|
'(a:int=1, *, b, c=None, **kwargs) -> 42')
|
|
|
|
def foo(a:int=1, *args, b, c=None, **kwargs) -> 42:
|
|
pass
|
|
self.assertEqual(str(inspect.signature(foo)),
|
|
'(a:int=1, *args, b, c=None, **kwargs) -> 42')
|
|
|
|
def foo():
|
|
pass
|
|
self.assertEqual(str(inspect.signature(foo)), '()')
|
|
|
|
def test_signature_str_positional_only(self):
|
|
P = inspect.Parameter
|
|
S = inspect.Signature
|
|
|
|
def test(a_po, *, b, **kwargs):
|
|
return a_po, kwargs
|
|
|
|
sig = inspect.signature(test)
|
|
new_params = list(sig.parameters.values())
|
|
new_params[0] = new_params[0].replace(kind=P.POSITIONAL_ONLY)
|
|
test.__signature__ = sig.replace(parameters=new_params)
|
|
|
|
self.assertEqual(str(inspect.signature(test)),
|
|
'(a_po, /, *, b, **kwargs)')
|
|
|
|
self.assertEqual(str(S(parameters=[P('foo', P.POSITIONAL_ONLY)])),
|
|
'(foo, /)')
|
|
|
|
self.assertEqual(str(S(parameters=[
|
|
P('foo', P.POSITIONAL_ONLY),
|
|
P('bar', P.VAR_KEYWORD)])),
|
|
'(foo, /, **bar)')
|
|
|
|
self.assertEqual(str(S(parameters=[
|
|
P('foo', P.POSITIONAL_ONLY),
|
|
P('bar', P.VAR_POSITIONAL)])),
|
|
'(foo, /, *bar)')
|
|
|
|
def test_signature_replace_anno(self):
|
|
def test() -> 42:
|
|
pass
|
|
|
|
sig = inspect.signature(test)
|
|
sig = sig.replace(return_annotation=None)
|
|
self.assertIs(sig.return_annotation, None)
|
|
sig = sig.replace(return_annotation=sig.empty)
|
|
self.assertIs(sig.return_annotation, sig.empty)
|
|
sig = sig.replace(return_annotation=42)
|
|
self.assertEqual(sig.return_annotation, 42)
|
|
self.assertEqual(sig, inspect.signature(test))
|
|
|
|
def test_signature_on_mangled_parameters(self):
|
|
class Spam:
|
|
def foo(self, __p1:1=2, *, __p2:2=3):
|
|
pass
|
|
class Ham(Spam):
|
|
pass
|
|
|
|
self.assertEqual(self.signature(Spam.foo),
|
|
((('self', ..., ..., "positional_or_keyword"),
|
|
('_Spam__p1', 2, 1, "positional_or_keyword"),
|
|
('_Spam__p2', 3, 2, "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(Spam.foo),
|
|
self.signature(Ham.foo))
|
|
|
|
def test_signature_from_callable_python_obj(self):
|
|
class MySignature(inspect.Signature): pass
|
|
def foo(a, *, b:1): pass
|
|
foo_sig = MySignature.from_callable(foo)
|
|
self.assertTrue(isinstance(foo_sig, MySignature))
|
|
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_signature_from_callable_builtin_obj(self):
|
|
class MySignature(inspect.Signature): pass
|
|
sig = MySignature.from_callable(_pickle.Pickler)
|
|
self.assertTrue(isinstance(sig, MySignature))
|
|
|
|
|
|
class TestParameterObject(unittest.TestCase):
|
|
def test_signature_parameter_kinds(self):
|
|
P = inspect.Parameter
|
|
self.assertTrue(P.POSITIONAL_ONLY < P.POSITIONAL_OR_KEYWORD < \
|
|
P.VAR_POSITIONAL < P.KEYWORD_ONLY < P.VAR_KEYWORD)
|
|
|
|
self.assertEqual(str(P.POSITIONAL_ONLY), 'POSITIONAL_ONLY')
|
|
self.assertTrue('POSITIONAL_ONLY' in repr(P.POSITIONAL_ONLY))
|
|
|
|
def test_signature_parameter_object(self):
|
|
p = inspect.Parameter('foo', default=10,
|
|
kind=inspect.Parameter.POSITIONAL_ONLY)
|
|
self.assertEqual(p.name, 'foo')
|
|
self.assertEqual(p.default, 10)
|
|
self.assertIs(p.annotation, p.empty)
|
|
self.assertEqual(p.kind, inspect.Parameter.POSITIONAL_ONLY)
|
|
|
|
with self.assertRaisesRegex(ValueError, 'invalid value'):
|
|
inspect.Parameter('foo', default=10, kind='123')
|
|
|
|
with self.assertRaisesRegex(ValueError, 'not a valid parameter name'):
|
|
inspect.Parameter('1', kind=inspect.Parameter.VAR_KEYWORD)
|
|
|
|
with self.assertRaisesRegex(TypeError, 'name must be a str'):
|
|
inspect.Parameter(None, kind=inspect.Parameter.VAR_KEYWORD)
|
|
|
|
with self.assertRaisesRegex(ValueError,
|
|
'is not a valid parameter name'):
|
|
inspect.Parameter('$', kind=inspect.Parameter.VAR_KEYWORD)
|
|
|
|
with self.assertRaisesRegex(ValueError,
|
|
'is not a valid parameter name'):
|
|
inspect.Parameter('.a', kind=inspect.Parameter.VAR_KEYWORD)
|
|
|
|
with self.assertRaisesRegex(ValueError, 'cannot have default values'):
|
|
inspect.Parameter('a', default=42,
|
|
kind=inspect.Parameter.VAR_KEYWORD)
|
|
|
|
with self.assertRaisesRegex(ValueError, 'cannot have default values'):
|
|
inspect.Parameter('a', default=42,
|
|
kind=inspect.Parameter.VAR_POSITIONAL)
|
|
|
|
p = inspect.Parameter('a', default=42,
|
|
kind=inspect.Parameter.POSITIONAL_OR_KEYWORD)
|
|
with self.assertRaisesRegex(ValueError, 'cannot have default values'):
|
|
p.replace(kind=inspect.Parameter.VAR_POSITIONAL)
|
|
|
|
self.assertTrue(repr(p).startswith('<Parameter'))
|
|
self.assertTrue('"a=42"' in repr(p))
|
|
|
|
def test_signature_parameter_hashable(self):
|
|
P = inspect.Parameter
|
|
foo = P('foo', kind=P.POSITIONAL_ONLY)
|
|
self.assertEqual(hash(foo), hash(P('foo', kind=P.POSITIONAL_ONLY)))
|
|
self.assertNotEqual(hash(foo), hash(P('foo', kind=P.POSITIONAL_ONLY,
|
|
default=42)))
|
|
self.assertNotEqual(hash(foo),
|
|
hash(foo.replace(kind=P.VAR_POSITIONAL)))
|
|
|
|
def test_signature_parameter_equality(self):
|
|
P = inspect.Parameter
|
|
p = P('foo', default=42, kind=inspect.Parameter.KEYWORD_ONLY)
|
|
|
|
self.assertTrue(p == p)
|
|
self.assertFalse(p != p)
|
|
self.assertFalse(p == 42)
|
|
self.assertTrue(p != 42)
|
|
self.assertTrue(p == EqualsToAll())
|
|
self.assertFalse(p != EqualsToAll())
|
|
|
|
self.assertTrue(p == P('foo', default=42,
|
|
kind=inspect.Parameter.KEYWORD_ONLY))
|
|
self.assertFalse(p != P('foo', default=42,
|
|
kind=inspect.Parameter.KEYWORD_ONLY))
|
|
|
|
def test_signature_parameter_replace(self):
|
|
p = inspect.Parameter('foo', default=42,
|
|
kind=inspect.Parameter.KEYWORD_ONLY)
|
|
|
|
self.assertIsNot(p, p.replace())
|
|
self.assertEqual(p, p.replace())
|
|
|
|
p2 = p.replace(annotation=1)
|
|
self.assertEqual(p2.annotation, 1)
|
|
p2 = p2.replace(annotation=p2.empty)
|
|
self.assertEqual(p, p2)
|
|
|
|
p2 = p2.replace(name='bar')
|
|
self.assertEqual(p2.name, 'bar')
|
|
self.assertNotEqual(p2, p)
|
|
|
|
with self.assertRaisesRegex(ValueError,
|
|
'name is a required attribute'):
|
|
p2 = p2.replace(name=p2.empty)
|
|
|
|
p2 = p2.replace(name='foo', default=None)
|
|
self.assertIs(p2.default, None)
|
|
self.assertNotEqual(p2, p)
|
|
|
|
p2 = p2.replace(name='foo', default=p2.empty)
|
|
self.assertIs(p2.default, p2.empty)
|
|
|
|
|
|
p2 = p2.replace(default=42, kind=p2.POSITIONAL_OR_KEYWORD)
|
|
self.assertEqual(p2.kind, p2.POSITIONAL_OR_KEYWORD)
|
|
self.assertNotEqual(p2, p)
|
|
|
|
with self.assertRaisesRegex(ValueError, 'invalid value for'):
|
|
p2 = p2.replace(kind=p2.empty)
|
|
|
|
p2 = p2.replace(kind=p2.KEYWORD_ONLY)
|
|
self.assertEqual(p2, p)
|
|
|
|
def test_signature_parameter_positional_only(self):
|
|
with self.assertRaisesRegex(TypeError, 'name must be a str'):
|
|
inspect.Parameter(None, kind=inspect.Parameter.POSITIONAL_ONLY)
|
|
|
|
@cpython_only
|
|
def test_signature_parameter_implicit(self):
|
|
with self.assertRaisesRegex(ValueError,
|
|
'implicit arguments must be passed in as'):
|
|
inspect.Parameter('.0', kind=inspect.Parameter.POSITIONAL_ONLY)
|
|
|
|
param = inspect.Parameter(
|
|
'.0', kind=inspect.Parameter.POSITIONAL_OR_KEYWORD)
|
|
self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_ONLY)
|
|
self.assertEqual(param.name, 'implicit0')
|
|
|
|
def test_signature_parameter_immutability(self):
|
|
p = inspect.Parameter('spam', kind=inspect.Parameter.KEYWORD_ONLY)
|
|
|
|
with self.assertRaises(AttributeError):
|
|
p.foo = 'bar'
|
|
|
|
with self.assertRaises(AttributeError):
|
|
p.kind = 123
|
|
|
|
|
|
class TestSignatureBind(unittest.TestCase):
|
|
@staticmethod
|
|
def call(func, *args, **kwargs):
|
|
sig = inspect.signature(func)
|
|
ba = sig.bind(*args, **kwargs)
|
|
return func(*ba.args, **ba.kwargs)
|
|
|
|
def test_signature_bind_empty(self):
|
|
def test():
|
|
return 42
|
|
|
|
self.assertEqual(self.call(test), 42)
|
|
with self.assertRaisesRegex(TypeError, 'too many positional arguments'):
|
|
self.call(test, 1)
|
|
with self.assertRaisesRegex(TypeError, 'too many positional arguments'):
|
|
self.call(test, 1, spam=10)
|
|
with self.assertRaisesRegex(
|
|
TypeError, "got an unexpected keyword argument 'spam'"):
|
|
|
|
self.call(test, spam=1)
|
|
|
|
def test_signature_bind_var(self):
|
|
def test(*args, **kwargs):
|
|
return args, kwargs
|
|
|
|
self.assertEqual(self.call(test), ((), {}))
|
|
self.assertEqual(self.call(test, 1), ((1,), {}))
|
|
self.assertEqual(self.call(test, 1, 2), ((1, 2), {}))
|
|
self.assertEqual(self.call(test, foo='bar'), ((), {'foo': 'bar'}))
|
|
self.assertEqual(self.call(test, 1, foo='bar'), ((1,), {'foo': 'bar'}))
|
|
self.assertEqual(self.call(test, args=10), ((), {'args': 10}))
|
|
self.assertEqual(self.call(test, 1, 2, foo='bar'),
|
|
((1, 2), {'foo': 'bar'}))
|
|
|
|
def test_signature_bind_just_args(self):
|
|
def test(a, b, c):
|
|
return a, b, c
|
|
|
|
self.assertEqual(self.call(test, 1, 2, 3), (1, 2, 3))
|
|
|
|
with self.assertRaisesRegex(TypeError, 'too many positional arguments'):
|
|
self.call(test, 1, 2, 3, 4)
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
"missing a required argument: 'b'"):
|
|
self.call(test, 1)
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
"missing a required argument: 'a'"):
|
|
self.call(test)
|
|
|
|
def test(a, b, c=10):
|
|
return a, b, c
|
|
self.assertEqual(self.call(test, 1, 2, 3), (1, 2, 3))
|
|
self.assertEqual(self.call(test, 1, 2), (1, 2, 10))
|
|
|
|
def test(a=1, b=2, c=3):
|
|
return a, b, c
|
|
self.assertEqual(self.call(test, a=10, c=13), (10, 2, 13))
|
|
self.assertEqual(self.call(test, a=10), (10, 2, 3))
|
|
self.assertEqual(self.call(test, b=10), (1, 10, 3))
|
|
|
|
def test_signature_bind_varargs_order(self):
|
|
def test(*args):
|
|
return args
|
|
|
|
self.assertEqual(self.call(test), ())
|
|
self.assertEqual(self.call(test, 1, 2, 3), (1, 2, 3))
|
|
|
|
def test_signature_bind_args_and_varargs(self):
|
|
def test(a, b, c=3, *args):
|
|
return a, b, c, args
|
|
|
|
self.assertEqual(self.call(test, 1, 2, 3, 4, 5), (1, 2, 3, (4, 5)))
|
|
self.assertEqual(self.call(test, 1, 2), (1, 2, 3, ()))
|
|
self.assertEqual(self.call(test, b=1, a=2), (2, 1, 3, ()))
|
|
self.assertEqual(self.call(test, 1, b=2), (1, 2, 3, ()))
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
"multiple values for argument 'c'"):
|
|
self.call(test, 1, 2, 3, c=4)
|
|
|
|
def test_signature_bind_just_kwargs(self):
|
|
def test(**kwargs):
|
|
return kwargs
|
|
|
|
self.assertEqual(self.call(test), {})
|
|
self.assertEqual(self.call(test, foo='bar', spam='ham'),
|
|
{'foo': 'bar', 'spam': 'ham'})
|
|
|
|
def test_signature_bind_args_and_kwargs(self):
|
|
def test(a, b, c=3, **kwargs):
|
|
return a, b, c, kwargs
|
|
|
|
self.assertEqual(self.call(test, 1, 2), (1, 2, 3, {}))
|
|
self.assertEqual(self.call(test, 1, 2, foo='bar', spam='ham'),
|
|
(1, 2, 3, {'foo': 'bar', 'spam': 'ham'}))
|
|
self.assertEqual(self.call(test, b=2, a=1, foo='bar', spam='ham'),
|
|
(1, 2, 3, {'foo': 'bar', 'spam': 'ham'}))
|
|
self.assertEqual(self.call(test, a=1, b=2, foo='bar', spam='ham'),
|
|
(1, 2, 3, {'foo': 'bar', 'spam': 'ham'}))
|
|
self.assertEqual(self.call(test, 1, b=2, foo='bar', spam='ham'),
|
|
(1, 2, 3, {'foo': 'bar', 'spam': 'ham'}))
|
|
self.assertEqual(self.call(test, 1, b=2, c=4, foo='bar', spam='ham'),
|
|
(1, 2, 4, {'foo': 'bar', 'spam': 'ham'}))
|
|
self.assertEqual(self.call(test, 1, 2, 4, foo='bar'),
|
|
(1, 2, 4, {'foo': 'bar'}))
|
|
self.assertEqual(self.call(test, c=5, a=4, b=3),
|
|
(4, 3, 5, {}))
|
|
|
|
def test_signature_bind_kwonly(self):
|
|
def test(*, foo):
|
|
return foo
|
|
with self.assertRaisesRegex(TypeError,
|
|
'too many positional arguments'):
|
|
self.call(test, 1)
|
|
self.assertEqual(self.call(test, foo=1), 1)
|
|
|
|
def test(a, *, foo=1, bar):
|
|
return foo
|
|
with self.assertRaisesRegex(TypeError,
|
|
"missing a required argument: 'bar'"):
|
|
self.call(test, 1)
|
|
|
|
def test(foo, *, bar):
|
|
return foo, bar
|
|
self.assertEqual(self.call(test, 1, bar=2), (1, 2))
|
|
self.assertEqual(self.call(test, bar=2, foo=1), (1, 2))
|
|
|
|
with self.assertRaisesRegex(
|
|
TypeError, "got an unexpected keyword argument 'spam'"):
|
|
|
|
self.call(test, bar=2, foo=1, spam=10)
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
'too many positional arguments'):
|
|
self.call(test, 1, 2)
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
'too many positional arguments'):
|
|
self.call(test, 1, 2, bar=2)
|
|
|
|
with self.assertRaisesRegex(
|
|
TypeError, "got an unexpected keyword argument 'spam'"):
|
|
|
|
self.call(test, 1, bar=2, spam='ham')
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
"missing a required argument: 'bar'"):
|
|
self.call(test, 1)
|
|
|
|
def test(foo, *, bar, **bin):
|
|
return foo, bar, bin
|
|
self.assertEqual(self.call(test, 1, bar=2), (1, 2, {}))
|
|
self.assertEqual(self.call(test, foo=1, bar=2), (1, 2, {}))
|
|
self.assertEqual(self.call(test, 1, bar=2, spam='ham'),
|
|
(1, 2, {'spam': 'ham'}))
|
|
self.assertEqual(self.call(test, spam='ham', foo=1, bar=2),
|
|
(1, 2, {'spam': 'ham'}))
|
|
with self.assertRaisesRegex(TypeError,
|
|
"missing a required argument: 'foo'"):
|
|
self.call(test, spam='ham', bar=2)
|
|
self.assertEqual(self.call(test, 1, bar=2, bin=1, spam=10),
|
|
(1, 2, {'bin': 1, 'spam': 10}))
|
|
|
|
def test_signature_bind_arguments(self):
|
|
def test(a, *args, b, z=100, **kwargs):
|
|
pass
|
|
sig = inspect.signature(test)
|
|
ba = sig.bind(10, 20, b=30, c=40, args=50, kwargs=60)
|
|
# we won't have 'z' argument in the bound arguments object, as we didn't
|
|
# pass it to the 'bind'
|
|
self.assertEqual(tuple(ba.arguments.items()),
|
|
(('a', 10), ('args', (20,)), ('b', 30),
|
|
('kwargs', {'c': 40, 'args': 50, 'kwargs': 60})))
|
|
self.assertEqual(ba.kwargs,
|
|
{'b': 30, 'c': 40, 'args': 50, 'kwargs': 60})
|
|
self.assertEqual(ba.args, (10, 20))
|
|
|
|
def test_signature_bind_positional_only(self):
|
|
P = inspect.Parameter
|
|
|
|
def test(a_po, b_po, c_po=3, foo=42, *, bar=50, **kwargs):
|
|
return a_po, b_po, c_po, foo, bar, kwargs
|
|
|
|
sig = inspect.signature(test)
|
|
new_params = collections.OrderedDict(tuple(sig.parameters.items()))
|
|
for name in ('a_po', 'b_po', 'c_po'):
|
|
new_params[name] = new_params[name].replace(kind=P.POSITIONAL_ONLY)
|
|
new_sig = sig.replace(parameters=new_params.values())
|
|
test.__signature__ = new_sig
|
|
|
|
self.assertEqual(self.call(test, 1, 2, 4, 5, bar=6),
|
|
(1, 2, 4, 5, 6, {}))
|
|
|
|
self.assertEqual(self.call(test, 1, 2),
|
|
(1, 2, 3, 42, 50, {}))
|
|
|
|
self.assertEqual(self.call(test, 1, 2, foo=4, bar=5),
|
|
(1, 2, 3, 4, 5, {}))
|
|
|
|
with self.assertRaisesRegex(TypeError, "but was passed as a keyword"):
|
|
self.call(test, 1, 2, foo=4, bar=5, c_po=10)
|
|
|
|
with self.assertRaisesRegex(TypeError, "parameter is positional only"):
|
|
self.call(test, 1, 2, c_po=4)
|
|
|
|
with self.assertRaisesRegex(TypeError, "parameter is positional only"):
|
|
self.call(test, a_po=1, b_po=2)
|
|
|
|
def test_signature_bind_with_self_arg(self):
|
|
# Issue #17071: one of the parameters is named "self
|
|
def test(a, self, b):
|
|
pass
|
|
sig = inspect.signature(test)
|
|
ba = sig.bind(1, 2, 3)
|
|
self.assertEqual(ba.args, (1, 2, 3))
|
|
ba = sig.bind(1, self=2, b=3)
|
|
self.assertEqual(ba.args, (1, 2, 3))
|
|
|
|
def test_signature_bind_vararg_name(self):
|
|
def test(a, *args):
|
|
return a, args
|
|
sig = inspect.signature(test)
|
|
|
|
with self.assertRaisesRegex(
|
|
TypeError, "got an unexpected keyword argument 'args'"):
|
|
|
|
sig.bind(a=0, args=1)
|
|
|
|
def test(*args, **kwargs):
|
|
return args, kwargs
|
|
self.assertEqual(self.call(test, args=1), ((), {'args': 1}))
|
|
|
|
sig = inspect.signature(test)
|
|
ba = sig.bind(args=1)
|
|
self.assertEqual(ba.arguments, {'kwargs': {'args': 1}})
|
|
|
|
@cpython_only
|
|
def test_signature_bind_implicit_arg(self):
|
|
# Issue #19611: getcallargs should work with set comprehensions
|
|
def make_set():
|
|
return {z * z for z in range(5)}
|
|
setcomp_code = make_set.__code__.co_consts[1]
|
|
setcomp_func = types.FunctionType(setcomp_code, {})
|
|
|
|
iterator = iter(range(5))
|
|
self.assertEqual(self.call(setcomp_func, iterator), {0, 1, 4, 9, 16})
|
|
|
|
|
|
class TestBoundArguments(unittest.TestCase):
|
|
def test_signature_bound_arguments_unhashable(self):
|
|
def foo(a): pass
|
|
ba = inspect.signature(foo).bind(1)
|
|
|
|
with self.assertRaisesRegex(TypeError, 'unhashable type'):
|
|
hash(ba)
|
|
|
|
def test_signature_bound_arguments_equality(self):
|
|
def foo(a): pass
|
|
ba = inspect.signature(foo).bind(1)
|
|
self.assertTrue(ba == ba)
|
|
self.assertFalse(ba != ba)
|
|
self.assertTrue(ba == EqualsToAll())
|
|
self.assertFalse(ba != EqualsToAll())
|
|
|
|
ba2 = inspect.signature(foo).bind(1)
|
|
self.assertTrue(ba == ba2)
|
|
self.assertFalse(ba != ba2)
|
|
|
|
ba3 = inspect.signature(foo).bind(2)
|
|
self.assertFalse(ba == ba3)
|
|
self.assertTrue(ba != ba3)
|
|
ba3.arguments['a'] = 1
|
|
self.assertTrue(ba == ba3)
|
|
self.assertFalse(ba != ba3)
|
|
|
|
def bar(b): pass
|
|
ba4 = inspect.signature(bar).bind(1)
|
|
self.assertFalse(ba == ba4)
|
|
self.assertTrue(ba != ba4)
|
|
|
|
def foo(*, a, b): pass
|
|
sig = inspect.signature(foo)
|
|
ba1 = sig.bind(a=1, b=2)
|
|
ba2 = sig.bind(b=2, a=1)
|
|
self.assertTrue(ba1 == ba2)
|
|
self.assertFalse(ba1 != ba2)
|
|
|
|
def test_signature_bound_arguments_pickle(self):
|
|
def foo(a, b, *, c:1={}, **kw) -> {42:'ham'}: pass
|
|
sig = inspect.signature(foo)
|
|
ba = sig.bind(20, 30, z={})
|
|
|
|
for ver in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.subTest(pickle_ver=ver):
|
|
ba_pickled = pickle.loads(pickle.dumps(ba, ver))
|
|
self.assertEqual(ba, ba_pickled)
|
|
|
|
def test_signature_bound_arguments_repr(self):
|
|
def foo(a, b, *, c:1={}, **kw) -> {42:'ham'}: pass
|
|
sig = inspect.signature(foo)
|
|
ba = sig.bind(20, 30, z={})
|
|
self.assertRegex(repr(ba), r'<BoundArguments \(a=20,.*\}\}\)>')
|
|
|
|
def test_signature_bound_arguments_apply_defaults(self):
|
|
def foo(a, b=1, *args, c:1={}, **kw): pass
|
|
sig = inspect.signature(foo)
|
|
|
|
ba = sig.bind(20)
|
|
ba.apply_defaults()
|
|
self.assertEqual(
|
|
list(ba.arguments.items()),
|
|
[('a', 20), ('b', 1), ('args', ()), ('c', {}), ('kw', {})])
|
|
|
|
# Make sure that we preserve the order:
|
|
# i.e. 'c' should be *before* 'kw'.
|
|
ba = sig.bind(10, 20, 30, d=1)
|
|
ba.apply_defaults()
|
|
self.assertEqual(
|
|
list(ba.arguments.items()),
|
|
[('a', 10), ('b', 20), ('args', (30,)), ('c', {}), ('kw', {'d':1})])
|
|
|
|
# Make sure that BoundArguments produced by bind_partial()
|
|
# are supported.
|
|
def foo(a, b): pass
|
|
sig = inspect.signature(foo)
|
|
ba = sig.bind_partial(20)
|
|
ba.apply_defaults()
|
|
self.assertEqual(
|
|
list(ba.arguments.items()),
|
|
[('a', 20)])
|
|
|
|
# Test no args
|
|
def foo(): pass
|
|
sig = inspect.signature(foo)
|
|
ba = sig.bind()
|
|
ba.apply_defaults()
|
|
self.assertEqual(list(ba.arguments.items()), [])
|
|
|
|
# Make sure a no-args binding still acquires proper defaults.
|
|
def foo(a='spam'): pass
|
|
sig = inspect.signature(foo)
|
|
ba = sig.bind()
|
|
ba.apply_defaults()
|
|
self.assertEqual(list(ba.arguments.items()), [('a', 'spam')])
|
|
|
|
|
|
class TestSignaturePrivateHelpers(unittest.TestCase):
|
|
def test_signature_get_bound_param(self):
|
|
getter = inspect._signature_get_bound_param
|
|
|
|
self.assertEqual(getter('($self)'), 'self')
|
|
self.assertEqual(getter('($self, obj)'), 'self')
|
|
self.assertEqual(getter('($cls, /, obj)'), 'cls')
|
|
|
|
def _strip_non_python_syntax(self, input,
|
|
clean_signature, self_parameter, last_positional_only):
|
|
computed_clean_signature, \
|
|
computed_self_parameter, \
|
|
computed_last_positional_only = \
|
|
inspect._signature_strip_non_python_syntax(input)
|
|
self.assertEqual(computed_clean_signature, clean_signature)
|
|
self.assertEqual(computed_self_parameter, self_parameter)
|
|
self.assertEqual(computed_last_positional_only, last_positional_only)
|
|
|
|
def test_signature_strip_non_python_syntax(self):
|
|
self._strip_non_python_syntax(
|
|
"($module, /, path, mode, *, dir_fd=None, " +
|
|
"effective_ids=False,\n follow_symlinks=True)",
|
|
"(module, path, mode, *, dir_fd=None, " +
|
|
"effective_ids=False, follow_symlinks=True)",
|
|
0,
|
|
0)
|
|
|
|
self._strip_non_python_syntax(
|
|
"($module, word, salt, /)",
|
|
"(module, word, salt)",
|
|
0,
|
|
2)
|
|
|
|
self._strip_non_python_syntax(
|
|
"(x, y=None, z=None, /)",
|
|
"(x, y=None, z=None)",
|
|
None,
|
|
2)
|
|
|
|
self._strip_non_python_syntax(
|
|
"(x, y=None, z=None)",
|
|
"(x, y=None, z=None)",
|
|
None,
|
|
None)
|
|
|
|
self._strip_non_python_syntax(
|
|
"(x,\n y=None,\n z = None )",
|
|
"(x, y=None, z=None)",
|
|
None,
|
|
None)
|
|
|
|
self._strip_non_python_syntax(
|
|
"",
|
|
"",
|
|
None,
|
|
None)
|
|
|
|
self._strip_non_python_syntax(
|
|
None,
|
|
None,
|
|
None,
|
|
None)
|
|
|
|
class TestSignatureDefinitions(unittest.TestCase):
|
|
# This test case provides a home for checking that particular APIs
|
|
# have signatures available for introspection
|
|
|
|
@cpython_only
|
|
@unittest.skipIf(MISSING_C_DOCSTRINGS,
|
|
"Signature information for builtins requires docstrings")
|
|
def test_builtins_have_signatures(self):
|
|
# This checks all builtin callables in CPython have signatures
|
|
# A few have signatures Signature can't yet handle, so we skip those
|
|
# since they will have to wait until PEP 457 adds the required
|
|
# introspection support to the inspect module
|
|
# Some others also haven't been converted yet for various other
|
|
# reasons, so we also skip those for the time being, but design
|
|
# the test to fail in order to indicate when it needs to be
|
|
# updated.
|
|
no_signature = set()
|
|
# These need PEP 457 groups
|
|
needs_groups = {"range", "slice", "dir", "getattr",
|
|
"next", "iter", "vars"}
|
|
no_signature |= needs_groups
|
|
# These need PEP 457 groups or a signature change to accept None
|
|
needs_semantic_update = {"round"}
|
|
no_signature |= needs_semantic_update
|
|
# These need *args support in Argument Clinic
|
|
needs_varargs = {"min", "max", "print", "__build_class__"}
|
|
no_signature |= needs_varargs
|
|
# These simply weren't covered in the initial AC conversion
|
|
# for builtin callables
|
|
not_converted_yet = {"open", "__import__"}
|
|
no_signature |= not_converted_yet
|
|
# These builtin types are expected to provide introspection info
|
|
types_with_signatures = set()
|
|
# Check the signatures we expect to be there
|
|
ns = vars(builtins)
|
|
for name, obj in sorted(ns.items()):
|
|
if not callable(obj):
|
|
continue
|
|
# The builtin types haven't been converted to AC yet
|
|
if isinstance(obj, type) and (name not in types_with_signatures):
|
|
# Note that this also skips all the exception types
|
|
no_signature.add(name)
|
|
if (name in no_signature):
|
|
# Not yet converted
|
|
continue
|
|
with self.subTest(builtin=name):
|
|
self.assertIsNotNone(inspect.signature(obj))
|
|
# Check callables that haven't been converted don't claim a signature
|
|
# This ensures this test will start failing as more signatures are
|
|
# added, so the affected items can be moved into the scope of the
|
|
# regression test above
|
|
for name in no_signature:
|
|
with self.subTest(builtin=name):
|
|
self.assertIsNone(obj.__text_signature__)
|
|
|
|
|
|
class NTimesUnwrappable:
|
|
def __init__(self, n):
|
|
self.n = n
|
|
self._next = None
|
|
|
|
@property
|
|
def __wrapped__(self):
|
|
if self.n <= 0:
|
|
raise Exception("Unwrapped too many times")
|
|
if self._next is None:
|
|
self._next = NTimesUnwrappable(self.n - 1)
|
|
return self._next
|
|
|
|
class TestUnwrap(unittest.TestCase):
|
|
|
|
def test_unwrap_one(self):
|
|
def func(a, b):
|
|
return a + b
|
|
wrapper = functools.lru_cache(maxsize=20)(func)
|
|
self.assertIs(inspect.unwrap(wrapper), func)
|
|
|
|
def test_unwrap_several(self):
|
|
def func(a, b):
|
|
return a + b
|
|
wrapper = func
|
|
for __ in range(10):
|
|
@functools.wraps(wrapper)
|
|
def wrapper():
|
|
pass
|
|
self.assertIsNot(wrapper.__wrapped__, func)
|
|
self.assertIs(inspect.unwrap(wrapper), func)
|
|
|
|
def test_stop(self):
|
|
def func1(a, b):
|
|
return a + b
|
|
@functools.wraps(func1)
|
|
def func2():
|
|
pass
|
|
@functools.wraps(func2)
|
|
def wrapper():
|
|
pass
|
|
func2.stop_here = 1
|
|
unwrapped = inspect.unwrap(wrapper,
|
|
stop=(lambda f: hasattr(f, "stop_here")))
|
|
self.assertIs(unwrapped, func2)
|
|
|
|
def test_cycle(self):
|
|
def func1(): pass
|
|
func1.__wrapped__ = func1
|
|
with self.assertRaisesRegex(ValueError, 'wrapper loop'):
|
|
inspect.unwrap(func1)
|
|
|
|
def func2(): pass
|
|
func2.__wrapped__ = func1
|
|
func1.__wrapped__ = func2
|
|
with self.assertRaisesRegex(ValueError, 'wrapper loop'):
|
|
inspect.unwrap(func1)
|
|
with self.assertRaisesRegex(ValueError, 'wrapper loop'):
|
|
inspect.unwrap(func2)
|
|
|
|
def test_unhashable(self):
|
|
def func(): pass
|
|
func.__wrapped__ = None
|
|
class C:
|
|
__hash__ = None
|
|
__wrapped__ = func
|
|
self.assertIsNone(inspect.unwrap(C()))
|
|
|
|
def test_recursion_limit(self):
|
|
obj = NTimesUnwrappable(sys.getrecursionlimit() + 1)
|
|
with self.assertRaisesRegex(ValueError, 'wrapper loop'):
|
|
inspect.unwrap(obj)
|
|
|
|
class TestMain(unittest.TestCase):
|
|
def test_only_source(self):
|
|
module = importlib.import_module('unittest')
|
|
rc, out, err = assert_python_ok('-m', 'inspect',
|
|
'unittest')
|
|
lines = out.decode().splitlines()
|
|
# ignore the final newline
|
|
self.assertEqual(lines[:-1], inspect.getsource(module).splitlines())
|
|
self.assertEqual(err, b'')
|
|
|
|
def test_custom_getattr(self):
|
|
def foo():
|
|
pass
|
|
foo.__signature__ = 42
|
|
with self.assertRaises(TypeError):
|
|
inspect.signature(foo)
|
|
|
|
@unittest.skipIf(ThreadPoolExecutor is None,
|
|
'threads required to test __qualname__ for source files')
|
|
def test_qualname_source(self):
|
|
rc, out, err = assert_python_ok('-m', 'inspect',
|
|
'concurrent.futures:ThreadPoolExecutor')
|
|
lines = out.decode().splitlines()
|
|
# ignore the final newline
|
|
self.assertEqual(lines[:-1],
|
|
inspect.getsource(ThreadPoolExecutor).splitlines())
|
|
self.assertEqual(err, b'')
|
|
|
|
def test_builtins(self):
|
|
module = importlib.import_module('unittest')
|
|
_, out, err = assert_python_failure('-m', 'inspect',
|
|
'sys')
|
|
lines = err.decode().splitlines()
|
|
self.assertEqual(lines, ["Can't get info for builtin modules."])
|
|
|
|
def test_details(self):
|
|
module = importlib.import_module('unittest')
|
|
args = support.optim_args_from_interpreter_flags()
|
|
rc, out, err = assert_python_ok(*args, '-m', 'inspect',
|
|
'unittest', '--details')
|
|
output = out.decode()
|
|
# Just a quick sanity check on the output
|
|
self.assertIn(module.__name__, output)
|
|
self.assertIn(module.__file__, output)
|
|
self.assertIn(module.__cached__, output)
|
|
self.assertEqual(err, b'')
|
|
|
|
|
|
class TestReload(unittest.TestCase):
|
|
|
|
src_before = textwrap.dedent("""\
|
|
def foo():
|
|
print("Bla")
|
|
""")
|
|
|
|
src_after = textwrap.dedent("""\
|
|
def foo():
|
|
print("Oh no!")
|
|
""")
|
|
|
|
def assertInspectEqual(self, path, source):
|
|
inspected_src = inspect.getsource(source)
|
|
with open(path) as src:
|
|
self.assertEqual(
|
|
src.read().splitlines(True),
|
|
inspected_src.splitlines(True)
|
|
)
|
|
|
|
def test_getsource_reload(self):
|
|
# see issue 1218234
|
|
with _ready_to_import('reload_bug', self.src_before) as (name, path):
|
|
module = importlib.import_module(name)
|
|
self.assertInspectEqual(path, module)
|
|
with open(path, 'w') as src:
|
|
src.write(self.src_after)
|
|
self.assertInspectEqual(path, module)
|
|
|
|
|
|
def test_main():
|
|
run_unittest(
|
|
TestDecorators, TestRetrievingSourceCode, TestOneliners, TestBuggyCases,
|
|
TestInterpreterStack, TestClassesAndFunctions, TestPredicates,
|
|
TestGetcallargsFunctions, TestGetcallargsMethods,
|
|
TestGetcallargsUnboundMethods, TestGetattrStatic, TestGetGeneratorState,
|
|
TestNoEOL, TestSignatureObject, TestSignatureBind, TestParameterObject,
|
|
TestBoundArguments, TestSignaturePrivateHelpers,
|
|
TestSignatureDefinitions,
|
|
TestGetClosureVars, TestUnwrap, TestMain, TestReload,
|
|
TestGetCoroutineState
|
|
)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|