186 lines
6.9 KiB
Python
186 lines
6.9 KiB
Python
'''
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Test cases for pyclbr.py
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Nick Mathewson
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'''
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from test.test_support import run_unittest
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import unittest, sys
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from types import ClassType, FunctionType, MethodType, BuiltinFunctionType
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import pyclbr
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from unittest import TestCase
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StaticMethodType = type(staticmethod(lambda: None))
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ClassMethodType = type(classmethod(lambda c: None))
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# This next line triggers an error on old versions of pyclbr.
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from commands import getstatus
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# Here we test the python class browser code.
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#
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# The main function in this suite, 'testModule', compares the output
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# of pyclbr with the introspected members of a module. Because pyclbr
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# is imperfect (as designed), testModule is called with a set of
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# members to ignore.
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class PyclbrTest(TestCase):
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def assertListEq(self, l1, l2, ignore):
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''' succeed iff {l1} - {ignore} == {l2} - {ignore} '''
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missing = (set(l1) ^ set(l2)) - set(ignore)
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if missing:
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print >>sys.stderr, "l1=%r\nl2=%r\nignore=%r" % (l1, l2, ignore)
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self.fail("%r missing" % missing.pop())
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def assertHasattr(self, obj, attr, ignore):
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''' succeed iff hasattr(obj,attr) or attr in ignore. '''
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if attr in ignore: return
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if not hasattr(obj, attr): print "???", attr
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self.failUnless(hasattr(obj, attr),
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'expected hasattr(%r, %r)' % (obj, attr))
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def assertHaskey(self, obj, key, ignore):
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''' succeed iff obj.has_key(key) or key in ignore. '''
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if key in ignore: return
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if not obj.has_key(key):
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print >>sys.stderr, "***",key
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self.failUnless(obj.has_key(key))
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def assertEqualsOrIgnored(self, a, b, ignore):
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''' succeed iff a == b or a in ignore or b in ignore '''
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if a not in ignore and b not in ignore:
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self.assertEquals(a, b)
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def checkModule(self, moduleName, module=None, ignore=()):
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''' succeed iff pyclbr.readmodule_ex(modulename) corresponds
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to the actual module object, module. Any identifiers in
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ignore are ignored. If no module is provided, the appropriate
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module is loaded with __import__.'''
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if module == None:
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# Import it.
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# ('<silly>' is to work around an API silliness in __import__)
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module = __import__(moduleName, globals(), {}, ['<silly>'])
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dict = pyclbr.readmodule_ex(moduleName)
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def ismethod(oclass, obj, name):
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classdict = oclass.__dict__
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if isinstance(obj, FunctionType):
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if not isinstance(classdict[name], StaticMethodType):
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return False
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else:
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if not isinstance(obj, MethodType):
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return False
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if obj.im_self is not None:
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if (not isinstance(classdict[name], ClassMethodType) or
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obj.im_self is not oclass):
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return False
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else:
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if not isinstance(classdict[name], FunctionType):
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return False
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objname = obj.__name__
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if objname.startswith("__") and not objname.endswith("__"):
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objname = "_%s%s" % (obj.im_class.__name__, objname)
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return objname == name
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# Make sure the toplevel functions and classes are the same.
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for name, value in dict.items():
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if name in ignore:
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continue
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self.assertHasattr(module, name, ignore)
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py_item = getattr(module, name)
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if isinstance(value, pyclbr.Function):
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self.assert_(isinstance(py_item, (FunctionType, BuiltinFunctionType)))
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else:
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self.failUnless(isinstance(py_item, (ClassType, type)))
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if py_item.__module__ != moduleName:
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continue # skip classes that came from somewhere else
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real_bases = [base.__name__ for base in py_item.__bases__]
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pyclbr_bases = [ getattr(base, 'name', base)
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for base in value.super ]
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try:
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self.assertListEq(real_bases, pyclbr_bases, ignore)
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except:
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print >>sys.stderr, "class=%s" % py_item
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raise
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actualMethods = []
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for m in py_item.__dict__.keys():
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if ismethod(py_item, getattr(py_item, m), m):
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actualMethods.append(m)
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foundMethods = []
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for m in value.methods.keys():
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if m[:2] == '__' and m[-2:] != '__':
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foundMethods.append('_'+name+m)
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else:
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foundMethods.append(m)
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try:
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self.assertListEq(foundMethods, actualMethods, ignore)
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self.assertEquals(py_item.__module__, value.module)
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self.assertEqualsOrIgnored(py_item.__name__, value.name,
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ignore)
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# can't check file or lineno
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except:
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print >>sys.stderr, "class=%s" % py_item
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raise
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# Now check for missing stuff.
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def defined_in(item, module):
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if isinstance(item, ClassType):
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return item.__module__ == module.__name__
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if isinstance(item, FunctionType):
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return item.func_globals is module.__dict__
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return False
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for name in dir(module):
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item = getattr(module, name)
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if isinstance(item, (ClassType, FunctionType)):
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if defined_in(item, module):
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self.assertHaskey(dict, name, ignore)
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def test_easy(self):
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self.checkModule('pyclbr')
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self.checkModule('doctest')
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self.checkModule('rfc822')
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self.checkModule('difflib')
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def test_decorators(self):
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# XXX: See comment in pyclbr_input.py for a test that would fail
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# if it were not commented out.
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#
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self.checkModule('test.pyclbr_input')
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def test_others(self):
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cm = self.checkModule
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# These were once about the 10 longest modules
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cm('random', ignore=('Random',)) # from _random import Random as CoreGenerator
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cm('cgi', ignore=('log',)) # set with = in module
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cm('mhlib')
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cm('urllib', ignore=('getproxies_registry',
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'open_https',
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'getproxies_internetconfig',)) # not on all platforms
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cm('pickle')
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cm('aifc', ignore=('openfp',)) # set with = in module
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cm('Cookie')
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cm('sre_parse', ignore=('dump',)) # from sre_constants import *
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cm('pdb')
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cm('pydoc')
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# Tests for modules inside packages
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cm('email.parser')
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cm('test.test_pyclbr')
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def test_main():
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run_unittest(PyclbrTest)
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if __name__ == "__main__":
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test_main()
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