| import re |
| import sys |
| import types |
| import unittest |
| import inspect |
| import linecache |
| import datetime |
| from UserList import UserList |
| from UserDict import UserDict |
| |
| from test.test_support import run_unittest, check_py3k_warnings |
| |
| with check_py3k_warnings( |
| ("tuple parameter unpacking has been removed", SyntaxWarning), |
| quiet=True): |
| from test import inspect_fodder as mod |
| from test import inspect_fodder2 as mod2 |
| |
| # C module for test_findsource_binary |
| import unicodedata |
| |
| # Functions tested in this suite: |
| # ismodule, isclass, ismethod, isfunction, istraceback, isframe, iscode, |
| # isbuiltin, isroutine, isgenerator, isgeneratorfunction, getmembers, |
| # getdoc, getfile, getmodule, getsourcefile, getcomments, getsource, |
| # getclasstree, getargspec, getargvalues, formatargspec, formatargvalues, |
| # currentframe, stack, trace, isdatadescriptor |
| |
| # NOTE: There are some additional tests relating to interaction with |
| # zipimport in the test_zipimport_support test module. |
| |
| modfile = mod.__file__ |
| if modfile.endswith(('c', 'o')): |
| modfile = modfile[:-1] |
| |
| import __builtin__ |
| |
| try: |
| 1 // 0 |
| except: |
| tb = sys.exc_traceback |
| |
| git = mod.StupidGit() |
| |
| class IsTestBase(unittest.TestCase): |
| predicates = set([inspect.isbuiltin, inspect.isclass, inspect.iscode, |
| inspect.isframe, inspect.isfunction, inspect.ismethod, |
| inspect.ismodule, inspect.istraceback, |
| inspect.isgenerator, inspect.isgeneratorfunction]) |
| |
| def istest(self, predicate, exp): |
| obj = eval(exp) |
| self.assertTrue(predicate(obj), '%s(%s)' % (predicate.__name__, exp)) |
| |
| for other in self.predicates - set([predicate]): |
| if predicate == inspect.isgeneratorfunction and\ |
| other == inspect.isfunction: |
| continue |
| self.assertFalse(other(obj), 'not %s(%s)' % (other.__name__, exp)) |
| |
| def generator_function_example(self): |
| for i in xrange(2): |
| yield i |
| |
| class TestPredicates(IsTestBase): |
| def test_sixteen(self): |
| count = len(filter(lambda x:x.startswith('is'), dir(inspect))) |
| # This test is here for remember you to update Doc/library/inspect.rst |
| # which claims there are 16 such functions |
| expected = 16 |
| err_msg = "There are %d (not %d) is* functions" % (count, expected) |
| self.assertEqual(count, expected, err_msg) |
| |
| |
| def test_excluding_predicates(self): |
| self.istest(inspect.isbuiltin, 'sys.exit') |
| self.istest(inspect.isbuiltin, '[].append') |
| self.istest(inspect.iscode, 'mod.spam.func_code') |
| self.istest(inspect.isframe, 'tb.tb_frame') |
| self.istest(inspect.isfunction, 'mod.spam') |
| self.istest(inspect.ismethod, 'mod.StupidGit.abuse') |
| self.istest(inspect.ismethod, 'git.argue') |
| self.istest(inspect.ismodule, 'mod') |
| self.istest(inspect.istraceback, 'tb') |
| self.istest(inspect.isdatadescriptor, '__builtin__.file.closed') |
| self.istest(inspect.isdatadescriptor, '__builtin__.file.softspace') |
| self.istest(inspect.isgenerator, '(x for x in xrange(2))') |
| self.istest(inspect.isgeneratorfunction, 'generator_function_example') |
| if hasattr(types, 'GetSetDescriptorType'): |
| self.istest(inspect.isgetsetdescriptor, |
| 'type(tb.tb_frame).f_locals') |
| else: |
| self.assertFalse(inspect.isgetsetdescriptor(type(tb.tb_frame).f_locals)) |
| if hasattr(types, 'MemberDescriptorType'): |
| self.istest(inspect.ismemberdescriptor, 'datetime.timedelta.days') |
| else: |
| self.assertFalse(inspect.ismemberdescriptor(datetime.timedelta.days)) |
| |
| def test_isroutine(self): |
| self.assertTrue(inspect.isroutine(mod.spam)) |
| self.assertTrue(inspect.isroutine([].count)) |
| |
| def test_isclass(self): |
| self.istest(inspect.isclass, 'mod.StupidGit') |
| self.assertTrue(inspect.isclass(list)) |
| |
| class newstyle(object): pass |
| self.assertTrue(inspect.isclass(newstyle)) |
| |
| class CustomGetattr(object): |
| def __getattr__(self, attr): |
| return None |
| self.assertFalse(inspect.isclass(CustomGetattr())) |
| |
| def test_get_slot_members(self): |
| class C(object): |
| __slots__ = ("a", "b") |
| |
| x = C() |
| x.a = 42 |
| members = dict(inspect.getmembers(x)) |
| self.assertIn('a', members) |
| self.assertNotIn('b', members) |
| |
| def test_isabstract(self): |
| from abc import ABCMeta, abstractmethod |
| |
| class AbstractClassExample(object): |
| __metaclass__ = ABCMeta |
| |
| @abstractmethod |
| def foo(self): |
| pass |
| |
| class ClassExample(AbstractClassExample): |
| def foo(self): |
| pass |
| |
| a = ClassExample() |
| |
| # Test general behaviour. |
| self.assertTrue(inspect.isabstract(AbstractClassExample)) |
| self.assertFalse(inspect.isabstract(ClassExample)) |
| self.assertFalse(inspect.isabstract(a)) |
| self.assertFalse(inspect.isabstract(int)) |
| self.assertFalse(inspect.isabstract(5)) |
| |
| |
| class TestInterpreterStack(IsTestBase): |
| def __init__(self, *args, **kwargs): |
| unittest.TestCase.__init__(self, *args, **kwargs) |
| |
| git.abuse(7, 8, 9) |
| |
| def test_abuse_done(self): |
| self.istest(inspect.istraceback, 'git.ex[2]') |
| self.istest(inspect.isframe, 'mod.fr') |
| |
| def test_stack(self): |
| self.assertTrue(len(mod.st) >= 5) |
| self.assertEqual(mod.st[0][1:], |
| (modfile, 16, 'eggs', [' st = inspect.stack()\n'], 0)) |
| self.assertEqual(mod.st[1][1:], |
| (modfile, 9, 'spam', [' eggs(b + d, c + f)\n'], 0)) |
| self.assertEqual(mod.st[2][1:], |
| (modfile, 43, 'argue', [' spam(a, b, c)\n'], 0)) |
| self.assertEqual(mod.st[3][1:], |
| (modfile, 39, 'abuse', [' self.argue(a, b, c)\n'], 0)) |
| |
| def test_trace(self): |
| self.assertEqual(len(git.tr), 3) |
| self.assertEqual(git.tr[0][1:], (modfile, 43, 'argue', |
| [' spam(a, b, c)\n'], 0)) |
| self.assertEqual(git.tr[1][1:], (modfile, 9, 'spam', |
| [' eggs(b + d, c + f)\n'], 0)) |
| self.assertEqual(git.tr[2][1:], (modfile, 18, 'eggs', |
| [' q = y // 0\n'], 0)) |
| |
| def test_frame(self): |
| args, varargs, varkw, locals = inspect.getargvalues(mod.fr) |
| self.assertEqual(args, ['x', 'y']) |
| self.assertEqual(varargs, None) |
| self.assertEqual(varkw, None) |
| self.assertEqual(locals, {'x': 11, 'p': 11, 'y': 14}) |
| self.assertEqual(inspect.formatargvalues(args, varargs, varkw, locals), |
| '(x=11, y=14)') |
| |
| def test_previous_frame(self): |
| args, varargs, varkw, locals = inspect.getargvalues(mod.fr.f_back) |
| self.assertEqual(args, ['a', 'b', 'c', 'd', ['e', ['f']]]) |
| self.assertEqual(varargs, 'g') |
| self.assertEqual(varkw, 'h') |
| self.assertEqual(inspect.formatargvalues(args, varargs, varkw, locals), |
| '(a=7, b=8, c=9, d=3, (e=4, (f=5,)), *g=(), **h={})') |
| |
| class GetSourceBase(unittest.TestCase): |
| # Subclasses must override. |
| fodderFile = None |
| |
| def __init__(self, *args, **kwargs): |
| unittest.TestCase.__init__(self, *args, **kwargs) |
| |
| with open(inspect.getsourcefile(self.fodderFile)) as fp: |
| self.source = fp.read() |
| |
| def sourcerange(self, top, bottom): |
| lines = self.source.split("\n") |
| return "\n".join(lines[top-1:bottom]) + "\n" |
| |
| def assertSourceEqual(self, obj, top, bottom): |
| self.assertEqual(inspect.getsource(obj), |
| self.sourcerange(top, bottom)) |
| |
| class TestRetrievingSourceCode(GetSourceBase): |
| fodderFile = mod |
| |
| def test_getclasses(self): |
| classes = inspect.getmembers(mod, inspect.isclass) |
| self.assertEqual(classes, |
| [('FesteringGob', mod.FesteringGob), |
| ('MalodorousPervert', mod.MalodorousPervert), |
| ('ParrotDroppings', mod.ParrotDroppings), |
| ('StupidGit', mod.StupidGit), |
| ('Tit', mod.MalodorousPervert), |
| ]) |
| tree = inspect.getclasstree([cls[1] for cls in classes]) |
| self.assertEqual(tree, |
| [(mod.ParrotDroppings, ()), |
| [(mod.FesteringGob, (mod.MalodorousPervert, |
| mod.ParrotDroppings)) |
| ], |
| (mod.StupidGit, ()), |
| [(mod.MalodorousPervert, (mod.StupidGit,)), |
| [(mod.FesteringGob, (mod.MalodorousPervert, |
| mod.ParrotDroppings)) |
| ] |
| ] |
| ]) |
| tree = inspect.getclasstree([cls[1] for cls in classes], True) |
| self.assertEqual(tree, |
| [(mod.ParrotDroppings, ()), |
| (mod.StupidGit, ()), |
| [(mod.MalodorousPervert, (mod.StupidGit,)), |
| [(mod.FesteringGob, (mod.MalodorousPervert, |
| mod.ParrotDroppings)) |
| ] |
| ] |
| ]) |
| |
| def test_getfunctions(self): |
| functions = inspect.getmembers(mod, inspect.isfunction) |
| self.assertEqual(functions, [('eggs', mod.eggs), |
| ('spam', mod.spam)]) |
| |
| @unittest.skipIf(sys.flags.optimize >= 2, |
| "Docstrings are omitted with -O2 and above") |
| def test_getdoc(self): |
| self.assertEqual(inspect.getdoc(mod), 'A module docstring.') |
| self.assertEqual(inspect.getdoc(mod.StupidGit), |
| 'A longer,\n\nindented\n\ndocstring.') |
| self.assertEqual(inspect.getdoc(git.abuse), |
| 'Another\n\ndocstring\n\ncontaining\n\ntabs') |
| |
| def test_cleandoc(self): |
| self.assertEqual(inspect.cleandoc('An\n indented\n docstring.'), |
| 'An\nindented\ndocstring.') |
| |
| def test_getcomments(self): |
| self.assertEqual(inspect.getcomments(mod), '# line 1\n') |
| self.assertEqual(inspect.getcomments(mod.StupidGit), '# line 20\n') |
| |
| def test_getmodule(self): |
| # Check actual module |
| self.assertEqual(inspect.getmodule(mod), mod) |
| # Check class (uses __module__ attribute) |
| self.assertEqual(inspect.getmodule(mod.StupidGit), mod) |
| # Check a method (no __module__ attribute, falls back to filename) |
| self.assertEqual(inspect.getmodule(mod.StupidGit.abuse), mod) |
| # Do it again (check the caching isn't broken) |
| self.assertEqual(inspect.getmodule(mod.StupidGit.abuse), mod) |
| # Check a builtin |
| self.assertEqual(inspect.getmodule(str), sys.modules["__builtin__"]) |
| # Check filename override |
| self.assertEqual(inspect.getmodule(None, modfile), mod) |
| |
| def test_getsource(self): |
| self.assertSourceEqual(git.abuse, 29, 39) |
| self.assertSourceEqual(mod.StupidGit, 21, 46) |
| |
| def test_getsourcefile(self): |
| self.assertEqual(inspect.getsourcefile(mod.spam), modfile) |
| self.assertEqual(inspect.getsourcefile(git.abuse), modfile) |
| fn = "_non_existing_filename_used_for_sourcefile_test.py" |
| co = compile("None", fn, "exec") |
| self.assertEqual(inspect.getsourcefile(co), None) |
| linecache.cache[co.co_filename] = (1, None, "None", co.co_filename) |
| self.assertEqual(inspect.getsourcefile(co), fn) |
| |
| def test_getfile(self): |
| self.assertEqual(inspect.getfile(mod.StupidGit), mod.__file__) |
| |
| def test_getmodule_recursion(self): |
| from types import ModuleType |
| name = '__inspect_dummy' |
| m = sys.modules[name] = ModuleType(name) |
| m.__file__ = "<string>" # hopefully not a real filename... |
| m.__loader__ = "dummy" # pretend the filename is understood by a loader |
| exec "def x(): pass" in m.__dict__ |
| self.assertEqual(inspect.getsourcefile(m.x.func_code), '<string>') |
| del sys.modules[name] |
| inspect.getmodule(compile('a=10','','single')) |
| |
| def test_proceed_with_fake_filename(self): |
| '''doctest monkeypatches linecache to enable inspection''' |
| fn, source = '<test>', 'def x(): pass\n' |
| getlines = linecache.getlines |
| def monkey(filename, module_globals=None): |
| if filename == fn: |
| return source.splitlines(True) |
| else: |
| return getlines(filename, module_globals) |
| linecache.getlines = monkey |
| try: |
| ns = {} |
| exec compile(source, fn, 'single') in ns |
| inspect.getsource(ns["x"]) |
| finally: |
| linecache.getlines = getlines |
| |
| class TestDecorators(GetSourceBase): |
| fodderFile = mod2 |
| |
| def test_wrapped_decorator(self): |
| self.assertSourceEqual(mod2.wrapped, 14, 17) |
| |
| def test_replacing_decorator(self): |
| self.assertSourceEqual(mod2.gone, 9, 10) |
| |
| class TestOneliners(GetSourceBase): |
| fodderFile = mod2 |
| def test_oneline_lambda(self): |
| # Test inspect.getsource with a one-line lambda function. |
| self.assertSourceEqual(mod2.oll, 25, 25) |
| |
| def test_threeline_lambda(self): |
| # Test inspect.getsource with a three-line lambda function, |
| # where the second and third lines are _not_ indented. |
| self.assertSourceEqual(mod2.tll, 28, 30) |
| |
| def test_twoline_indented_lambda(self): |
| # Test inspect.getsource with a two-line lambda function, |
| # where the second line _is_ indented. |
| self.assertSourceEqual(mod2.tlli, 33, 34) |
| |
| def test_onelinefunc(self): |
| # Test inspect.getsource with a regular one-line function. |
| self.assertSourceEqual(mod2.onelinefunc, 37, 37) |
| |
| def test_manyargs(self): |
| # Test inspect.getsource with a regular function where |
| # the arguments are on two lines and _not_ indented and |
| # the body on the second line with the last arguments. |
| self.assertSourceEqual(mod2.manyargs, 40, 41) |
| |
| def test_twolinefunc(self): |
| # Test inspect.getsource with a regular function where |
| # the body is on two lines, following the argument list and |
| # continued on the next line by a \\. |
| self.assertSourceEqual(mod2.twolinefunc, 44, 45) |
| |
| def test_lambda_in_list(self): |
| # Test inspect.getsource with a one-line lambda function |
| # defined in a list, indented. |
| self.assertSourceEqual(mod2.a[1], 49, 49) |
| |
| def test_anonymous(self): |
| # Test inspect.getsource with a lambda function defined |
| # as argument to another function. |
| self.assertSourceEqual(mod2.anonymous, 55, 55) |
| |
| class TestBuggyCases(GetSourceBase): |
| fodderFile = mod2 |
| |
| def test_with_comment(self): |
| self.assertSourceEqual(mod2.with_comment, 58, 59) |
| |
| def test_multiline_sig(self): |
| self.assertSourceEqual(mod2.multiline_sig[0], 63, 64) |
| |
| def test_nested_class(self): |
| self.assertSourceEqual(mod2.func69().func71, 71, 72) |
| |
| def test_one_liner_followed_by_non_name(self): |
| self.assertSourceEqual(mod2.func77, 77, 77) |
| |
| def test_one_liner_dedent_non_name(self): |
| self.assertSourceEqual(mod2.cls82.func83, 83, 83) |
| |
| def test_with_comment_instead_of_docstring(self): |
| self.assertSourceEqual(mod2.func88, 88, 90) |
| |
| def test_method_in_dynamic_class(self): |
| self.assertSourceEqual(mod2.method_in_dynamic_class, 95, 97) |
| |
| @unittest.skipIf( |
| not hasattr(unicodedata, '__file__') or |
| unicodedata.__file__[-4:] in (".pyc", ".pyo"), |
| "unicodedata is not an external binary module") |
| def test_findsource_binary(self): |
| self.assertRaises(IOError, inspect.getsource, unicodedata) |
| self.assertRaises(IOError, inspect.findsource, unicodedata) |
| |
| def test_findsource_code_in_linecache(self): |
| lines = ["x=1"] |
| co = compile(lines[0], "_dynamically_created_file", "exec") |
| self.assertRaises(IOError, inspect.findsource, co) |
| self.assertRaises(IOError, inspect.getsource, co) |
| linecache.cache[co.co_filename] = (1, None, lines, co.co_filename) |
| self.assertEqual(inspect.findsource(co), (lines,0)) |
| self.assertEqual(inspect.getsource(co), lines[0]) |
| |
| def test_findsource_without_filename(self): |
| for fname in ['', '<string>']: |
| co = compile('x=1', fname, "exec") |
| self.assertRaises(IOError, inspect.findsource, co) |
| self.assertRaises(IOError, inspect.getsource, co) |
| |
| |
| class _BrokenDataDescriptor(object): |
| """ |
| A broken data descriptor. See bug #1785. |
| """ |
| def __get__(*args): |
| raise AssertionError("should not __get__ data descriptors") |
| |
| def __set__(*args): |
| raise RuntimeError |
| |
| def __getattr__(*args): |
| raise AssertionError("should not __getattr__ data descriptors") |
| |
| |
| class _BrokenMethodDescriptor(object): |
| """ |
| A broken method descriptor. See bug #1785. |
| """ |
| def __get__(*args): |
| raise AssertionError("should not __get__ method descriptors") |
| |
| def __getattr__(*args): |
| raise AssertionError("should not __getattr__ method descriptors") |
| |
| |
| # Helper for testing classify_class_attrs. |
| def attrs_wo_objs(cls): |
| return [t[:3] for t in inspect.classify_class_attrs(cls)] |
| |
| |
| class TestClassesAndFunctions(unittest.TestCase): |
| def test_classic_mro(self): |
| # Test classic-class method resolution order. |
| class A: pass |
| class B(A): pass |
| class C(A): pass |
| class D(B, C): pass |
| |
| expected = (D, B, A, C) |
| got = inspect.getmro(D) |
| self.assertEqual(expected, got) |
| |
| 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 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, (f,))=(4, (5,)), *g, **h)') |
| |
| def test_getargspec_method(self): |
| class A(object): |
| def m(self): |
| pass |
| self.assertArgSpecEquals(A.m, ['self']) |
| |
| def test_getargspec_sublistofone(self): |
| with check_py3k_warnings( |
| ("tuple parameter unpacking has been removed", SyntaxWarning), |
| ("parenthesized argument names are invalid", SyntaxWarning)): |
| exec 'def sublistOfOne((foo,)): return 1' |
| self.assertArgSpecEquals(sublistOfOne, [['foo']]) |
| |
| exec 'def fakeSublistOfOne((foo)): return 1' |
| self.assertArgSpecEquals(fakeSublistOfOne, ['foo']) |
| |
| |
| def _classify_test(self, newstyle): |
| """Helper for testing that classify_class_attrs finds a bunch of |
| different kinds of attributes on a given class. |
| """ |
| if newstyle: |
| base = object |
| else: |
| class base: |
| pass |
| |
| class A(base): |
| 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') |
| 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') |
| if newstyle: |
| self.assertIn(('c', 'method', C), attrs, 'missing plain method') |
| else: |
| 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') |
| self.assertIn(('md', 'method', A), attrs, 'missing method descriptor') |
| self.assertIn(('dd', 'data', A), attrs, 'missing data descriptor') |
| |
| |
| def test_classify_oldstyle(self): |
| """classify_class_attrs finds static methods, class methods, |
| properties, normal methods, and data attributes on an old-style |
| class. |
| """ |
| self._classify_test(False) |
| |
| |
| def test_classify_newstyle(self): |
| """Just like test_classify_oldstyle, but for a new-style class. |
| """ |
| self._classify_test(True) |
| |
| def test_classify_builtin_types(self): |
| # Simple sanity check that all built-in types can have their |
| # attributes classified. |
| for name in dir(__builtin__): |
| builtin = getattr(__builtin__, name) |
| if isinstance(builtin, type): |
| inspect.classify_class_attrs(builtin) |
| |
| def test_getmembers_method(self): |
| # Old-style classes |
| class B: |
| def f(self): |
| pass |
| |
| self.assertIn(('f', B.f), inspect.getmembers(B)) |
| # contrary to spec, ismethod() is also True for unbound methods |
| # (see #1785) |
| self.assertIn(('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)) |
| |
| # New-style classes |
| class B(object): |
| def f(self): |
| pass |
| |
| self.assertIn(('f', B.f), inspect.getmembers(B)) |
| self.assertIn(('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)) |
| |
| |
| class TestGetcallargsFunctions(unittest.TestCase): |
| |
| # tuple parameters are named '.1', '.2', etc. |
| is_tuplename = re.compile(r'^\.\d+$').match |
| |
| 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, ex1: |
| pass |
| else: |
| self.fail('Exception not raised') |
| try: |
| eval('inspect.getcallargs(func, %s)' % call_param_string, None, |
| locs) |
| except Exception, ex2: |
| pass |
| else: |
| self.fail('Exception not raised') |
| self.assertIs(type(ex1), type(ex2)) |
| self.assertEqual(str(ex1), str(ex2)) |
| |
| def makeCallable(self, signature): |
| """Create a function that returns its locals(), excluding the |
| autogenerated '.1', '.2', etc. tuple param names (if any).""" |
| with check_py3k_warnings( |
| ("tuple parameter unpacking has been removed", SyntaxWarning), |
| quiet=True): |
| code = ("lambda %s: dict(i for i in locals().items() " |
| "if not is_tuplename(i[0]))") |
| return eval(code % signature, {'is_tuplename' : self.is_tuplename}) |
| |
| 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, '*UserList([2])') |
| self.assertEqualCallArgs(f, '*UserList([2, 3])') |
| self.assertEqualCallArgs(f, '**UserDict(a=2)') |
| self.assertEqualCallArgs(f, '2, **UserDict(b=3)') |
| self.assertEqualCallArgs(f, 'b=2, **UserDict(a=3)') |
| # unicode keyword args |
| self.assertEqualCallArgs(f, '**{u"a":2}') |
| self.assertEqualCallArgs(f, 'b=3, **{u"a":2}') |
| self.assertEqualCallArgs(f, '2, **{u"b":3}') |
| self.assertEqualCallArgs(f, '**{u"b":3, u"a":2}') |
| |
| 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, *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, '**UserDict(a=2, b=3, c=4)') |
| self.assertEqualCallArgs(f, '2, c=4, **UserDict(b=3)') |
| self.assertEqualCallArgs(f, 'b=2, **UserDict(a=3, c=4)') |
| # unicode keyword args |
| self.assertEqualCallArgs(f, 'c=4, **{u"a":2, u"b":3}') |
| self.assertEqualCallArgs(f, '2, c=4, **{u"b":3}') |
| self.assertEqualCallArgs(f, 'b=2, **{u"a":3, u"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, '**UserDict(a=1, b=2)') |
| self.assertEqualCallArgs(f, 'c=3, **UserDict(a=1, b=2)') |
| |
| def test_tupleargs(self): |
| f = self.makeCallable('(b,c), (d,(e,f))=(0,[1,2])') |
| self.assertEqualCallArgs(f, '(2,3)') |
| self.assertEqualCallArgs(f, '[2,3]') |
| self.assertEqualCallArgs(f, 'UserList([2,3])') |
| self.assertEqualCallArgs(f, '(2,3), (4,(5,6))') |
| self.assertEqualCallArgs(f, '(2,3), (4,[5,6])') |
| self.assertEqualCallArgs(f, '(2,3), [4,UserList([5,6])]') |
| |
| def test_multiple_features(self): |
| f = self.makeCallable('a, b=2, (c,(d,e))=(3,[4,5]), *f, **g') |
| self.assertEqualCallArgs(f, '2, 3, (4,[5,6]), 7') |
| self.assertEqualCallArgs(f, '2, 3, *[(4,[5,6]), 7], 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, *UserList([2, 3, (4,[5,6])]), ' |
| '**{"y":9, "z":10}') |
| self.assertEqualCallArgs(f, '2, x=8, *UserList([3, (4,[5,6])]), ' |
| '**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') |
| 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') |
| f = self.makeCallable('(a,b)=(0,1)') |
| self.assertEqualException(f, '1') |
| self.assertEqualException(f, '[1]') |
| self.assertEqualException(f, '(1,2,3)') |
| # issue11256: |
| f3 = self.makeCallable('**c') |
| 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) |
| |
| def test_main(): |
| run_unittest( |
| TestDecorators, TestRetrievingSourceCode, TestOneliners, TestBuggyCases, |
| TestInterpreterStack, TestClassesAndFunctions, TestPredicates, |
| TestGetcallargsFunctions, TestGetcallargsMethods, |
| TestGetcallargsUnboundMethods) |
| |
| if __name__ == "__main__": |
| test_main() |