mirror of
https://github.com/python/cpython.git
synced 2024-11-28 12:31:14 +08:00
2283 lines
86 KiB
Python
2283 lines
86 KiB
Python
import re
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import sys
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import types
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import unittest
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import inspect
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import linecache
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import datetime
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import collections
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import os
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import shutil
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from os.path import normcase
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from test.support import run_unittest, TESTFN, DirsOnSysPath
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from test import inspect_fodder as mod
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from test import inspect_fodder2 as mod2
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# C module for test_findsource_binary
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import unicodedata
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# Functions tested in this suite:
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# ismodule, isclass, ismethod, isfunction, istraceback, isframe, iscode,
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# isbuiltin, isroutine, isgenerator, isgeneratorfunction, getmembers,
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# getdoc, getfile, getmodule, getsourcefile, getcomments, getsource,
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# getclasstree, getargspec, getargvalues, formatargspec, formatargvalues,
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# currentframe, stack, trace, isdatadescriptor
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# NOTE: There are some additional tests relating to interaction with
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# zipimport in the test_zipimport_support test module.
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modfile = mod.__file__
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if modfile.endswith(('c', 'o')):
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modfile = modfile[:-1]
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# Normalize file names: on Windows, the case of file names of compiled
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# modules depends on the path used to start the python executable.
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modfile = normcase(modfile)
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def revise(filename, *args):
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return (normcase(filename),) + args
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import builtins
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git = mod.StupidGit()
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class IsTestBase(unittest.TestCase):
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predicates = set([inspect.isbuiltin, inspect.isclass, inspect.iscode,
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inspect.isframe, inspect.isfunction, inspect.ismethod,
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inspect.ismodule, inspect.istraceback,
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inspect.isgenerator, inspect.isgeneratorfunction])
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def istest(self, predicate, exp):
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obj = eval(exp)
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self.assertTrue(predicate(obj), '%s(%s)' % (predicate.__name__, exp))
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for other in self.predicates - set([predicate]):
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if predicate == inspect.isgeneratorfunction and\
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other == inspect.isfunction:
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continue
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self.assertFalse(other(obj), 'not %s(%s)' % (other.__name__, exp))
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def generator_function_example(self):
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for i in range(2):
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yield i
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class TestPredicates(IsTestBase):
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def test_sixteen(self):
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count = len([x for x in dir(inspect) if x.startswith('is')])
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# This test is here for remember you to update Doc/library/inspect.rst
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# which claims there are 16 such functions
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expected = 16
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err_msg = "There are %d (not %d) is* functions" % (count, expected)
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self.assertEqual(count, expected, err_msg)
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def test_excluding_predicates(self):
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global tb
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self.istest(inspect.isbuiltin, 'sys.exit')
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self.istest(inspect.isbuiltin, '[].append')
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self.istest(inspect.iscode, 'mod.spam.__code__')
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try:
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1/0
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except:
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tb = sys.exc_info()[2]
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self.istest(inspect.isframe, 'tb.tb_frame')
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self.istest(inspect.istraceback, 'tb')
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if hasattr(types, 'GetSetDescriptorType'):
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self.istest(inspect.isgetsetdescriptor,
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'type(tb.tb_frame).f_locals')
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else:
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self.assertFalse(inspect.isgetsetdescriptor(type(tb.tb_frame).f_locals))
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finally:
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# Clear traceback and all the frames and local variables hanging to it.
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tb = None
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self.istest(inspect.isfunction, 'mod.spam')
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self.istest(inspect.isfunction, 'mod.StupidGit.abuse')
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self.istest(inspect.ismethod, 'git.argue')
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self.istest(inspect.ismodule, 'mod')
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self.istest(inspect.isdatadescriptor, 'collections.defaultdict.default_factory')
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self.istest(inspect.isgenerator, '(x for x in range(2))')
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self.istest(inspect.isgeneratorfunction, 'generator_function_example')
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if hasattr(types, 'MemberDescriptorType'):
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self.istest(inspect.ismemberdescriptor, 'datetime.timedelta.days')
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else:
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self.assertFalse(inspect.ismemberdescriptor(datetime.timedelta.days))
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def test_isroutine(self):
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self.assertTrue(inspect.isroutine(mod.spam))
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self.assertTrue(inspect.isroutine([].count))
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def test_isclass(self):
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self.istest(inspect.isclass, 'mod.StupidGit')
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self.assertTrue(inspect.isclass(list))
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class CustomGetattr(object):
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def __getattr__(self, attr):
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return None
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self.assertFalse(inspect.isclass(CustomGetattr()))
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def test_get_slot_members(self):
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class C(object):
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__slots__ = ("a", "b")
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x = C()
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x.a = 42
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members = dict(inspect.getmembers(x))
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self.assertIn('a', members)
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self.assertNotIn('b', members)
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def test_isabstract(self):
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from abc import ABCMeta, abstractmethod
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class AbstractClassExample(metaclass=ABCMeta):
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@abstractmethod
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def foo(self):
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pass
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class ClassExample(AbstractClassExample):
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def foo(self):
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pass
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a = ClassExample()
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# Test general behaviour.
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self.assertTrue(inspect.isabstract(AbstractClassExample))
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self.assertFalse(inspect.isabstract(ClassExample))
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self.assertFalse(inspect.isabstract(a))
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self.assertFalse(inspect.isabstract(int))
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self.assertFalse(inspect.isabstract(5))
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class TestInterpreterStack(IsTestBase):
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def __init__(self, *args, **kwargs):
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unittest.TestCase.__init__(self, *args, **kwargs)
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git.abuse(7, 8, 9)
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def test_abuse_done(self):
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self.istest(inspect.istraceback, 'git.ex[2]')
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self.istest(inspect.isframe, 'mod.fr')
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def test_stack(self):
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self.assertTrue(len(mod.st) >= 5)
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self.assertEqual(revise(*mod.st[0][1:]),
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(modfile, 16, 'eggs', [' st = inspect.stack()\n'], 0))
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self.assertEqual(revise(*mod.st[1][1:]),
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(modfile, 9, 'spam', [' eggs(b + d, c + f)\n'], 0))
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self.assertEqual(revise(*mod.st[2][1:]),
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(modfile, 43, 'argue', [' spam(a, b, c)\n'], 0))
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self.assertEqual(revise(*mod.st[3][1:]),
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(modfile, 39, 'abuse', [' self.argue(a, b, c)\n'], 0))
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def test_trace(self):
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self.assertEqual(len(git.tr), 3)
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self.assertEqual(revise(*git.tr[0][1:]),
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(modfile, 43, 'argue', [' spam(a, b, c)\n'], 0))
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self.assertEqual(revise(*git.tr[1][1:]),
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(modfile, 9, 'spam', [' eggs(b + d, c + f)\n'], 0))
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self.assertEqual(revise(*git.tr[2][1:]),
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(modfile, 18, 'eggs', [' q = y / 0\n'], 0))
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def test_frame(self):
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args, varargs, varkw, locals = inspect.getargvalues(mod.fr)
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self.assertEqual(args, ['x', 'y'])
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self.assertEqual(varargs, None)
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self.assertEqual(varkw, None)
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self.assertEqual(locals, {'x': 11, 'p': 11, 'y': 14})
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self.assertEqual(inspect.formatargvalues(args, varargs, varkw, locals),
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'(x=11, y=14)')
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def test_previous_frame(self):
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args, varargs, varkw, locals = inspect.getargvalues(mod.fr.f_back)
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self.assertEqual(args, ['a', 'b', 'c', 'd', 'e', 'f'])
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self.assertEqual(varargs, 'g')
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self.assertEqual(varkw, 'h')
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self.assertEqual(inspect.formatargvalues(args, varargs, varkw, locals),
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'(a=7, b=8, c=9, d=3, e=4, f=5, *g=(), **h={})')
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class GetSourceBase(unittest.TestCase):
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# Subclasses must override.
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fodderModule = None
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def __init__(self, *args, **kwargs):
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unittest.TestCase.__init__(self, *args, **kwargs)
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with open(inspect.getsourcefile(self.fodderModule)) as fp:
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self.source = fp.read()
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def sourcerange(self, top, bottom):
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lines = self.source.split("\n")
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return "\n".join(lines[top-1:bottom]) + "\n"
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def assertSourceEqual(self, obj, top, bottom):
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self.assertEqual(inspect.getsource(obj),
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self.sourcerange(top, bottom))
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class TestRetrievingSourceCode(GetSourceBase):
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fodderModule = mod
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def test_getclasses(self):
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classes = inspect.getmembers(mod, inspect.isclass)
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self.assertEqual(classes,
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[('FesteringGob', mod.FesteringGob),
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('MalodorousPervert', mod.MalodorousPervert),
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('ParrotDroppings', mod.ParrotDroppings),
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('StupidGit', mod.StupidGit)])
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tree = inspect.getclasstree([cls[1] for cls in classes], 1)
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self.assertEqual(tree,
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[(object, ()),
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[(mod.ParrotDroppings, (object,)),
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(mod.StupidGit, (object,)),
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[(mod.MalodorousPervert, (mod.StupidGit,)),
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[(mod.FesteringGob, (mod.MalodorousPervert,
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mod.ParrotDroppings))
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]
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]
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]
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])
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def test_getfunctions(self):
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functions = inspect.getmembers(mod, inspect.isfunction)
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self.assertEqual(functions, [('eggs', mod.eggs),
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('spam', mod.spam)])
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@unittest.skipIf(sys.flags.optimize >= 2,
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"Docstrings are omitted with -O2 and above")
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def test_getdoc(self):
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self.assertEqual(inspect.getdoc(mod), 'A module docstring.')
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self.assertEqual(inspect.getdoc(mod.StupidGit),
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'A longer,\n\nindented\n\ndocstring.')
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self.assertEqual(inspect.getdoc(git.abuse),
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'Another\n\ndocstring\n\ncontaining\n\ntabs')
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def test_cleandoc(self):
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self.assertEqual(inspect.cleandoc('An\n indented\n docstring.'),
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'An\nindented\ndocstring.')
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def test_getcomments(self):
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self.assertEqual(inspect.getcomments(mod), '# line 1\n')
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self.assertEqual(inspect.getcomments(mod.StupidGit), '# line 20\n')
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def test_getmodule(self):
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# Check actual module
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self.assertEqual(inspect.getmodule(mod), mod)
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# Check class (uses __module__ attribute)
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self.assertEqual(inspect.getmodule(mod.StupidGit), mod)
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# Check a method (no __module__ attribute, falls back to filename)
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self.assertEqual(inspect.getmodule(mod.StupidGit.abuse), mod)
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# Do it again (check the caching isn't broken)
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self.assertEqual(inspect.getmodule(mod.StupidGit.abuse), mod)
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# Check a builtin
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self.assertEqual(inspect.getmodule(str), sys.modules["builtins"])
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# Check filename override
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self.assertEqual(inspect.getmodule(None, modfile), mod)
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def test_getsource(self):
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self.assertSourceEqual(git.abuse, 29, 39)
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self.assertSourceEqual(mod.StupidGit, 21, 46)
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def test_getsourcefile(self):
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self.assertEqual(normcase(inspect.getsourcefile(mod.spam)), modfile)
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self.assertEqual(normcase(inspect.getsourcefile(git.abuse)), modfile)
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fn = "_non_existing_filename_used_for_sourcefile_test.py"
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co = compile("None", fn, "exec")
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self.assertEqual(inspect.getsourcefile(co), None)
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linecache.cache[co.co_filename] = (1, None, "None", co.co_filename)
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try:
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self.assertEqual(normcase(inspect.getsourcefile(co)), fn)
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finally:
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del linecache.cache[co.co_filename]
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def test_getfile(self):
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self.assertEqual(inspect.getfile(mod.StupidGit), mod.__file__)
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def test_getmodule_recursion(self):
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from types import ModuleType
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name = '__inspect_dummy'
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m = sys.modules[name] = ModuleType(name)
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m.__file__ = "<string>" # hopefully not a real filename...
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m.__loader__ = "dummy" # pretend the filename is understood by a loader
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exec("def x(): pass", m.__dict__)
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self.assertEqual(inspect.getsourcefile(m.x.__code__), '<string>')
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del sys.modules[name]
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inspect.getmodule(compile('a=10','','single'))
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def test_proceed_with_fake_filename(self):
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'''doctest monkeypatches linecache to enable inspection'''
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fn, source = '<test>', 'def x(): pass\n'
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getlines = linecache.getlines
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def monkey(filename, module_globals=None):
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if filename == fn:
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return source.splitlines(keepends=True)
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else:
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return getlines(filename, module_globals)
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linecache.getlines = monkey
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try:
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ns = {}
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exec(compile(source, fn, 'single'), ns)
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inspect.getsource(ns["x"])
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finally:
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linecache.getlines = getlines
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class TestDecorators(GetSourceBase):
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fodderModule = mod2
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def test_wrapped_decorator(self):
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self.assertSourceEqual(mod2.wrapped, 14, 17)
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def test_replacing_decorator(self):
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self.assertSourceEqual(mod2.gone, 9, 10)
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class TestOneliners(GetSourceBase):
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fodderModule = mod2
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def test_oneline_lambda(self):
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# Test inspect.getsource with a one-line lambda function.
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self.assertSourceEqual(mod2.oll, 25, 25)
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def test_threeline_lambda(self):
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# Test inspect.getsource with a three-line lambda function,
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# where the second and third lines are _not_ indented.
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self.assertSourceEqual(mod2.tll, 28, 30)
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def test_twoline_indented_lambda(self):
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# Test inspect.getsource with a two-line lambda function,
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# where the second line _is_ indented.
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self.assertSourceEqual(mod2.tlli, 33, 34)
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def test_onelinefunc(self):
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# Test inspect.getsource with a regular one-line function.
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self.assertSourceEqual(mod2.onelinefunc, 37, 37)
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def test_manyargs(self):
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# Test inspect.getsource with a regular function where
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# the arguments are on two lines and _not_ indented and
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# the body on the second line with the last arguments.
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self.assertSourceEqual(mod2.manyargs, 40, 41)
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def test_twolinefunc(self):
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# Test inspect.getsource with a regular function where
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# the body is on two lines, following the argument list and
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# continued on the next line by a \\.
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self.assertSourceEqual(mod2.twolinefunc, 44, 45)
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def test_lambda_in_list(self):
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# Test inspect.getsource with a one-line lambda function
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# defined in a list, indented.
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self.assertSourceEqual(mod2.a[1], 49, 49)
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def test_anonymous(self):
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# Test inspect.getsource with a lambda function defined
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# as argument to another function.
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self.assertSourceEqual(mod2.anonymous, 55, 55)
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class TestBuggyCases(GetSourceBase):
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fodderModule = mod2
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def test_with_comment(self):
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self.assertSourceEqual(mod2.with_comment, 58, 59)
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def test_multiline_sig(self):
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self.assertSourceEqual(mod2.multiline_sig[0], 63, 64)
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def test_nested_class(self):
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self.assertSourceEqual(mod2.func69().func71, 71, 72)
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def test_one_liner_followed_by_non_name(self):
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self.assertSourceEqual(mod2.func77, 77, 77)
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def test_one_liner_dedent_non_name(self):
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self.assertSourceEqual(mod2.cls82.func83, 83, 83)
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def test_with_comment_instead_of_docstring(self):
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self.assertSourceEqual(mod2.func88, 88, 90)
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def test_method_in_dynamic_class(self):
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self.assertSourceEqual(mod2.method_in_dynamic_class, 95, 97)
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@unittest.skipIf(
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not hasattr(unicodedata, '__file__') or
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unicodedata.__file__[-4:] in (".pyc", ".pyo"),
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"unicodedata is not an external binary module")
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def test_findsource_binary(self):
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self.assertRaises(IOError, inspect.getsource, unicodedata)
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self.assertRaises(IOError, inspect.findsource, unicodedata)
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def test_findsource_code_in_linecache(self):
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lines = ["x=1"]
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co = compile(lines[0], "_dynamically_created_file", "exec")
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self.assertRaises(IOError, inspect.findsource, co)
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self.assertRaises(IOError, inspect.getsource, co)
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linecache.cache[co.co_filename] = (1, None, lines, co.co_filename)
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try:
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self.assertEqual(inspect.findsource(co), (lines,0))
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self.assertEqual(inspect.getsource(co), lines[0])
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finally:
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del linecache.cache[co.co_filename]
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class TestNoEOL(GetSourceBase):
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def __init__(self, *args, **kwargs):
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self.tempdir = TESTFN + '_dir'
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os.mkdir(self.tempdir)
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with open(os.path.join(self.tempdir,
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'inspect_fodder3%spy' % os.extsep), 'w') as f:
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f.write("class X:\n pass # No EOL")
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with DirsOnSysPath(self.tempdir):
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import inspect_fodder3 as mod3
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self.fodderModule = mod3
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GetSourceBase.__init__(self, *args, **kwargs)
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def tearDown(self):
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shutil.rmtree(self.tempdir)
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def test_class(self):
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self.assertSourceEqual(self.fodderModule.X, 1, 2)
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class _BrokenDataDescriptor(object):
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"""
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A broken data descriptor. See bug #1785.
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"""
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def __get__(*args):
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raise AssertionError("should not __get__ data descriptors")
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|
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def __set__(*args):
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raise RuntimeError
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|
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def __getattr__(*args):
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raise AssertionError("should not __getattr__ data descriptors")
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|
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class _BrokenMethodDescriptor(object):
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"""
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A broken method descriptor. See bug #1785.
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"""
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def __get__(*args):
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raise AssertionError("should not __get__ method descriptors")
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|
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def __getattr__(*args):
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raise AssertionError("should not __getattr__ method descriptors")
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# Helper for testing classify_class_attrs.
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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):
|
|
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_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(('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_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))
|
|
|
|
|
|
_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')
|
|
|
|
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_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 TestSignatureObject(unittest.TestCase):
|
|
@staticmethod
|
|
def signature(func):
|
|
sig = inspect.signature(func)
|
|
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, *args, ko, **kwargs):
|
|
pass
|
|
sig = inspect.signature(test)
|
|
po = sig.parameters['po'].replace(kind=P.POSITIONAL_ONLY)
|
|
pk = sig.parameters['pk']
|
|
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))
|
|
|
|
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_on_builtin_function(self):
|
|
with self.assertRaisesRegex(ValueError, 'not supported by signature'):
|
|
inspect.signature(type)
|
|
with self.assertRaisesRegex(ValueError, 'not supported by signature'):
|
|
# support for 'wrapper_descriptor'
|
|
inspect.signature(type.__call__)
|
|
with self.assertRaisesRegex(ValueError, 'not supported by signature'):
|
|
# support for 'method-wrapper'
|
|
inspect.signature(min.__call__)
|
|
with self.assertRaisesRegex(ValueError,
|
|
'no signature found for builtin function'):
|
|
# support for 'method-wrapper'
|
|
inspect.signature(min)
|
|
|
|
def test_signature_on_non_function(self):
|
|
with self.assertRaisesRegex(TypeError, 'is not a callable object'):
|
|
inspect.signature(42)
|
|
|
|
with self.assertRaisesRegex(TypeError, 'is not a Python function'):
|
|
inspect.Signature.from_function(42)
|
|
|
|
def test_signature_on_method(self):
|
|
class Test:
|
|
def foo(self, arg1, arg2=1) -> int:
|
|
pass
|
|
|
|
meth = Test().foo
|
|
|
|
self.assertEqual(self.signature(meth),
|
|
((('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
|
|
|
|
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, ..., "positional_or_keyword"),
|
|
('c', 2, ..., "keyword_only"),
|
|
('d', ..., ..., "keyword_only")),
|
|
...))
|
|
|
|
self.assertEqual(self.signature(partial(test, 0, b=1, c=2)),
|
|
((('b', 1, ..., "positional_or_keyword"),
|
|
('c', 2, ..., "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, 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, ..., "positional_or_keyword"),),
|
|
...))
|
|
# 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, ..., "positional_or_keyword"),
|
|
('c', ..., ..., "positional_or_keyword")),
|
|
...))
|
|
self.assertEqual(_foo(c=10), (1, 30, 10))
|
|
_foo = partial(_foo, 2) # now 'b' has two values -
|
|
# positional and keyword
|
|
with self.assertRaisesRegex(ValueError, "has incorrect arguments"):
|
|
inspect.signature(_foo)
|
|
|
|
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, ..., "positional_or_keyword"),
|
|
('c', 20, ..., "positional_or_keyword"),
|
|
('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, a=10, c=13)
|
|
ba = inspect.signature(_foo).bind(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), (10, 12, 13))
|
|
_foo = partial(_foo, b=10)
|
|
ba = inspect.signature(_foo).bind(12, 14)
|
|
self.assertEqual(_foo(*ba.args, **ba.kwargs), (12, 14, 13))
|
|
|
|
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")),
|
|
...))
|
|
|
|
# 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"),),
|
|
...))
|
|
|
|
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")),
|
|
...))
|
|
|
|
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 ToFail:
|
|
__call__ = type
|
|
with self.assertRaisesRegex(ValueError, "not supported by signature"):
|
|
inspect.signature(ToFail())
|
|
|
|
|
|
class Wrapped:
|
|
pass
|
|
Wrapped.__wrapped__ = lambda a: None
|
|
self.assertEqual(self.signature(Wrapped),
|
|
((('a', ..., ..., "positional_or_keyword"),),
|
|
...))
|
|
|
|
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.assertNotEqual(inspect.signature(foo), 42)
|
|
|
|
def bar(a, *, b:int) -> float: pass
|
|
self.assertEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def bar(a, *, b:int) -> int: pass
|
|
self.assertNotEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def bar(a, *, b:int): pass
|
|
self.assertNotEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def bar(a, *, b:int=42) -> float: pass
|
|
self.assertNotEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def bar(a, *, c) -> float: pass
|
|
self.assertNotEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def bar(a, b:int) -> float: pass
|
|
self.assertNotEqual(inspect.signature(foo), inspect.signature(bar))
|
|
def spam(b:int, a) -> float: pass
|
|
self.assertNotEqual(inspect.signature(spam), inspect.signature(bar))
|
|
|
|
def foo(*, a, b, c): pass
|
|
def bar(*, c, b, a): pass
|
|
self.assertEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def foo(*, a=1, b, c): pass
|
|
def bar(*, c, b, a=1): pass
|
|
self.assertEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def foo(pos, *, a=1, b, c): pass
|
|
def bar(pos, *, c, b, a=1): pass
|
|
self.assertEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def foo(pos, *, a, b, c): pass
|
|
def bar(pos, *, c, b, a=1): pass
|
|
self.assertNotEqual(inspect.signature(foo), 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.assertEqual(inspect.signature(foo), inspect.signature(bar))
|
|
|
|
def test_signature_unhashable(self):
|
|
def foo(a): pass
|
|
sig = inspect.signature(foo)
|
|
with self.assertRaisesRegex(TypeError, 'unhashable type'):
|
|
hash(sig)
|
|
|
|
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
|
|
|
|
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)')
|
|
|
|
sig = inspect.signature(test)
|
|
new_params = list(sig.parameters.values())
|
|
new_params[0] = new_params[0].replace(name=None)
|
|
test.__signature__ = sig.replace(parameters=new_params)
|
|
self.assertEqual(str(inspect.signature(test)),
|
|
'(<0>, *, b, **kwargs)')
|
|
|
|
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))
|
|
|
|
|
|
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(ValueError,
|
|
'non-positional-only parameter'):
|
|
inspect.Parameter(None, 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'))
|
|
|
|
def test_signature_parameter_equality(self):
|
|
P = inspect.Parameter
|
|
p = P('foo', default=42, kind=inspect.Parameter.KEYWORD_ONLY)
|
|
|
|
self.assertEqual(p, p)
|
|
self.assertNotEqual(p, 42)
|
|
|
|
self.assertEqual(p, P('foo', default=42,
|
|
kind=inspect.Parameter.KEYWORD_ONLY))
|
|
|
|
def test_signature_parameter_unhashable(self):
|
|
p = inspect.Parameter('foo', default=42,
|
|
kind=inspect.Parameter.KEYWORD_ONLY)
|
|
|
|
with self.assertRaisesRegex(TypeError, 'unhashable type'):
|
|
hash(p)
|
|
|
|
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, 'not a valid parameter name'):
|
|
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):
|
|
p = inspect.Parameter(None, kind=inspect.Parameter.POSITIONAL_ONLY)
|
|
self.assertEqual(str(p), '<>')
|
|
|
|
p = p.replace(name='1')
|
|
self.assertEqual(str(p), '<1>')
|
|
|
|
def test_signature_parameter_immutability(self):
|
|
p = inspect.Parameter(None, kind=inspect.Parameter.POSITIONAL_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, 'too many keyword arguments'):
|
|
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, "'b' parameter lacking default"):
|
|
self.call(test, 1)
|
|
|
|
with self.assertRaisesRegex(TypeError, "'a' parameter lacking default"):
|
|
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,
|
|
"'bar' parameter lacking default value"):
|
|
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,
|
|
'too many keyword arguments'):
|
|
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,
|
|
'too many keyword arguments'):
|
|
self.call(test, 1, bar=2, spam='ham')
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
"'bar' parameter lacking default value"):
|
|
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,
|
|
"'foo' parameter lacking default value"):
|
|
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, {}))
|
|
|
|
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)
|
|
|
|
|
|
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.assertEqual(ba, ba)
|
|
|
|
ba2 = inspect.signature(foo).bind(1)
|
|
self.assertEqual(ba, ba2)
|
|
|
|
ba3 = inspect.signature(foo).bind(2)
|
|
self.assertNotEqual(ba, ba3)
|
|
ba3.arguments['a'] = 1
|
|
self.assertEqual(ba, ba3)
|
|
|
|
def bar(b): pass
|
|
ba4 = inspect.signature(bar).bind(1)
|
|
self.assertNotEqual(ba, ba4)
|
|
|
|
|
|
def test_main():
|
|
run_unittest(
|
|
TestDecorators, TestRetrievingSourceCode, TestOneliners, TestBuggyCases,
|
|
TestInterpreterStack, TestClassesAndFunctions, TestPredicates,
|
|
TestGetcallargsFunctions, TestGetcallargsMethods,
|
|
TestGetcallargsUnboundMethods, TestGetattrStatic, TestGetGeneratorState,
|
|
TestNoEOL, TestSignatureObject, TestSignatureBind, TestParameterObject,
|
|
TestBoundArguments, TestGetClosureVars
|
|
)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|