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, have_unicode
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
try:
import unicodedata
except ImportError:
unicodedata = None
# 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')
if have_unicode:
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()