def testInterfaces(self):
"""
Test presence of interfaces (+z3 interfaces obtained by ZCML)
"""
from Products.PloneArticle.interfaces import INonStructuralFolder
from Products.PloneArticle.interfaces import IPloneArticle
from Products.ATContentTypes.interface import IATDocument
article = self.article
self.failUnless(INonStructuralFolder.isImplementedBy(article))
self.failUnless(IPloneArticle.isImplementedBy(article))
self.failUnless(IATDocument.isImplementedBy(article))
