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'''
Test cases for pyclbr.py
Nick Mathewson
'''
from test_support import run_unittest
import unittest, sys
from types import ClassType, FunctionType, MethodType
import pyclbr
# This next line triggers an error on old versions of pyclbr.
from commands import getstatus
# Here we test the python class browser code.
#
# The main function in this suite, 'testModule', compares the output
# of pyclbr with the introspected members of a module. Because pyclbr
# is imperfect (as designed), testModule is called with a set of
# members to ignore.
class PyclbrTest(unittest.TestCase):
def assertListEq(self, l1, l2, ignore):
''' succeed iff {l1} - {ignore} == {l2} - {ignore} '''
for p1, p2 in (l1, l2), (l2, l1):
for item in p1:
ok = (item in p2) or (item in ignore)
if not ok:
self.fail("%r missing" % item)
def assertHasattr(self, obj, attr, ignore):
''' succeed iff hasattr(obj,attr) or attr in ignore. '''
if attr in ignore: return
if not hasattr(obj, attr): print "???",attr
self.failUnless(hasattr(obj, attr))
def assertHaskey(self, obj, key, ignore):
''' succeed iff obj.has_key(key) or key in ignore. '''
if key in ignore: return
if not obj.has_key(key): print "***",key
self.failUnless(obj.has_key(key))
def assertEquals(self, a, b, ignore=None):
''' succeed iff a == b or a in ignore or b in ignore '''
if (ignore == None) or (a in ignore) or (b in ignore): return
unittest.TestCase.assertEquals(self, a, b)
def checkModule(self, moduleName, module=None, ignore=()):
''' succeed iff pyclbr.readmodule_ex(modulename) corresponds
to the actual module object, module. Any identifiers in
ignore are ignored. If no module is provided, the appropriate
module is loaded with __import__.'''
if module == None:
module = __import__(moduleName, globals(), {}, [])
dict = pyclbr.readmodule_ex(moduleName)
# Make sure the toplevel functions and classes are the same.
for name, value in dict.items():
if name in ignore:
continue
self.assertHasattr(module, name, ignore)
py_item = getattr(module, name)
if isinstance(value, pyclbr.Function):
self.assertEquals(type(py_item), FunctionType)
else:
self.assertEquals(type(py_item), ClassType)
real_bases = [base.__name__ for base in py_item.__bases__]
pyclbr_bases = [ getattr(base, 'name', base)
for base in value.super ]
self.assertListEq(real_bases, pyclbr_bases, ignore)
actualMethods = []
for m in dir(py_item):
if type(getattr(py_item, m)) == MethodType:
actualMethods.append(m)
foundMethods = []
for m in value.methods.keys():
if m[:2] == '__' and m[-2:] != '__':
foundMethods.append('_'+name+m)
else:
foundMethods.append(m)
self.assertListEq(foundMethods, actualMethods, ignore)
self.assertEquals(py_item.__module__, value.module)
self.assertEquals(py_item.__name__, value.name, ignore)
# can't check file or lineno
# Now check for missing stuff.
for name in dir(module):
item = getattr(module, name)
if type(item) in (ClassType, FunctionType):
self.assertHaskey(dict, name, ignore)
def test_easy(self):
self.checkModule('pyclbr')
self.checkModule('doctest')
self.checkModule('rfc822')
self.checkModule('xmllib')
self.checkModule('difflib')
def test_others(self):
cm = self.checkModule
# these are about the 20 longest modules.
cm('random', ignore=('_verify',)) # deleted
cm('cgi', ignore=('f', 'g', # nested declarations
'log')) # set with =, not def
cm('mhlib', ignore=('do', # nested declaration
'bisect')) # imported method, set with =
cm('urllib', ignore=('getproxies_environment', # set with =
'getproxies_registry', # set with =
'open_https')) # not on all platforms
#XXXX bad example
#cm('urllib2', ignore=('at_cnri', # defined inside __main__
# '__super_init', # set with =.
# '_HTTPError__super_init', # set with =.
# 'http_error_301', # set with =.
# ))
cm('pickle', ignore=('g',)) # deleted declaration
cm('aifc', ignore=('openfp',)) # set with =
cm('httplib', ignore=('error', # set with =
'HTTPS')) # not on all platforms
cm('Cookie', ignore=('__str__', 'Cookie')) # set with =
cm('sre_parse', ignore=('literal', # nested def
'makedict', 'dump' # from sre_constants
))
cm('test.test_pyclbr',
module=sys.modules[__name__])
# pydoc doesn't work because of string issues
# cm('pydoc', pydoc)
# pdb plays too many dynamic games
# cm('pdb', pdb)
run_unittest(PyclbrTest)
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