567 lines
21 KiB
Python
567 lines
21 KiB
Python
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 datetime
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from test.test_support import run_unittest, check_py3k_warnings
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with check_py3k_warnings(
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("tuple parameter unpacking has been removed", SyntaxWarning),
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quiet=True):
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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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import __builtin__
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try:
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1 // 0
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except:
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tb = sys.exc_traceback
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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 xrange(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(filter(lambda x:x.startswith('is'), dir(inspect)))
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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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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.func_code')
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self.istest(inspect.isframe, 'tb.tb_frame')
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self.istest(inspect.isfunction, 'mod.spam')
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self.istest(inspect.ismethod, '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.istraceback, 'tb')
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self.istest(inspect.isdatadescriptor, '__builtin__.file.closed')
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self.istest(inspect.isdatadescriptor, '__builtin__.file.softspace')
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self.istest(inspect.isgenerator, '(x for x in xrange(2))')
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self.istest(inspect.isgeneratorfunction, 'generator_function_example')
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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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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 newstyle(object): pass
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self.assertTrue(inspect.isclass(newstyle))
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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(object):
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__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(mod.st[0][1:],
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(modfile, 16, 'eggs', [' st = inspect.stack()\n'], 0))
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self.assertEqual(mod.st[1][1:],
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(modfile, 9, 'spam', [' eggs(b + d, c + f)\n'], 0))
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self.assertEqual(mod.st[2][1:],
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(modfile, 43, 'argue', [' spam(a, b, c)\n'], 0))
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self.assertEqual(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(git.tr[0][1:], (modfile, 43, 'argue',
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[' spam(a, b, c)\n'], 0))
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self.assertEqual(git.tr[1][1:], (modfile, 9, 'spam',
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[' eggs(b + d, c + f)\n'], 0))
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self.assertEqual(git.tr[2][1:], (modfile, 18, 'eggs',
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[' 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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fodderFile = 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.fodderFile)) 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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fodderFile = 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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[(mod.ParrotDroppings, ()),
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(mod.StupidGit, ()),
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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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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["__builtin__"])
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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(inspect.getsourcefile(mod.spam), modfile)
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self.assertEqual(inspect.getsourcefile(git.abuse), modfile)
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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" in m.__dict__
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self.assertEqual(inspect.getsourcefile(m.x.func_code), '<string>')
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del sys.modules[name]
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inspect.getmodule(compile('a=10','','single'))
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class TestDecorators(GetSourceBase):
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fodderFile = 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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fodderFile = 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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fodderFile = 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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# Helper for testing classify_class_attrs.
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def attrs_wo_objs(cls):
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return [t[:3] for t in inspect.classify_class_attrs(cls)]
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class TestClassesAndFunctions(unittest.TestCase):
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def test_classic_mro(self):
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# Test classic-class method resolution order.
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class A: pass
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class B(A): pass
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class C(A): pass
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class D(B, C): pass
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expected = (D, B, A, C)
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got = inspect.getmro(D)
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self.assertEqual(expected, got)
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def test_newstyle_mro(self):
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# The same w/ new-class MRO.
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class A(object): pass
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class B(A): pass
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class C(A): pass
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class D(B, C): pass
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expected = (D, B, C, A, object)
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got = inspect.getmro(D)
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self.assertEqual(expected, got)
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def assertArgSpecEquals(self, routine, args_e, varargs_e = None,
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varkw_e = None, defaults_e = None,
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formatted = None):
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args, varargs, varkw, defaults = inspect.getargspec(routine)
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self.assertEqual(args, args_e)
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self.assertEqual(varargs, varargs_e)
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self.assertEqual(varkw, varkw_e)
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self.assertEqual(defaults, defaults_e)
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if formatted is not None:
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self.assertEqual(inspect.formatargspec(args, varargs, varkw, defaults),
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formatted)
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def test_getargspec(self):
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self.assertArgSpecEquals(mod.eggs, ['x', 'y'], formatted = '(x, y)')
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self.assertArgSpecEquals(mod.spam,
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['a', 'b', 'c', 'd', ['e', ['f']]],
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'g', 'h', (3, (4, (5,))),
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'(a, b, c, d=3, (e, (f,))=(4, (5,)), *g, **h)')
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def test_getargspec_method(self):
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class A(object):
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def m(self):
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pass
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self.assertArgSpecEquals(A.m, ['self'])
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def test_getargspec_sublistofone(self):
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with check_py3k_warnings(
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("tuple parameter unpacking has been removed", SyntaxWarning),
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("parenthesized argument names are invalid", SyntaxWarning)):
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exec 'def sublistOfOne((foo,)): return 1'
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self.assertArgSpecEquals(sublistOfOne, [['foo']])
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exec 'def fakeSublistOfOne((foo)): return 1'
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self.assertArgSpecEquals(fakeSublistOfOne, ['foo'])
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def test_classify_oldstyle(self):
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class A:
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def s(): pass
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s = staticmethod(s)
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def c(cls): pass
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c = classmethod(c)
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def getp(self): pass
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p = property(getp)
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def m(self): pass
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def m1(self): pass
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datablob = '1'
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attrs = attrs_wo_objs(A)
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self.assertIn(('s', 'static method', A), attrs, 'missing static method')
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self.assertIn(('c', 'class method', A), attrs, 'missing class method')
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self.assertIn(('p', 'property', A), attrs, 'missing property')
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self.assertIn(('m', 'method', A), attrs, 'missing plain method')
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self.assertIn(('m1', 'method', A), attrs, 'missing plain method')
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self.assertIn(('datablob', 'data', A), attrs, 'missing data')
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class B(A):
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def m(self): pass
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attrs = attrs_wo_objs(B)
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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')
|
|
|
|
|
|
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')
|
|
|
|
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', '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', D), attrs, 'missing plain method')
|
|
self.assertIn(('datablob', 'data', A), attrs, 'missing data')
|
|
|
|
# Repeat all that, but w/ new-style classes.
|
|
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'
|
|
|
|
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')
|
|
self.assertIn(('m1', 'method', A), attrs, 'missing plain method')
|
|
self.assertIn(('datablob', 'data', A), attrs, 'missing data')
|
|
|
|
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')
|
|
|
|
|
|
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')
|
|
|
|
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')
|
|
|
|
def test_main():
|
|
run_unittest(TestDecorators, TestRetrievingSourceCode, TestOneliners,
|
|
TestBuggyCases,
|
|
TestInterpreterStack, TestClassesAndFunctions, TestPredicates)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|