How to use the publish.models.FlatPage.objects.draft function in publish

def test_draft_and_deleted(self):
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft_and_deleted()))
            
            self.flat_page1.publish()
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft_and_deleted()))
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft()))
 
            self.flat_page1.delete()
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft_and_deleted()))
            self.failUnlessEqual([self.flat_page2], list(FlatPage.objects.draft()))

def test_draft_and_deleted(self):
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft_and_deleted()))
            
            self.flat_page1.publish()
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft_and_deleted()))
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft()))
 
            self.flat_page1.delete()
            self.failUnlessEqual(set([self.flat_page1, self.flat_page2]), set(FlatPage.objects.draft_and_deleted()))
            self.failUnlessEqual([self.flat_page2], list(FlatPage.objects.draft()))

def test_publish(self):
            self.failUnlessEqual([], list(FlatPage.objects.published()))
            
            FlatPage.objects.draft().publish()

            flat_page1 = FlatPage.objects.get(id=self.flat_page1.id)
            flat_page2 = FlatPage.objects.get(id=self.flat_page2.id)
 
            self.failUnlessEqual(set([flat_page1.public, flat_page2.public]), set(FlatPage.objects.published()))

def test_delete(self):
            # delete is overriden, so it marks the public instances
            self.flat_page1.publish()
            public1 = self.flat_page1.public
            
            FlatPage.objects.draft().delete()
            
            self.failUnlessEqual([], list(FlatPage.objects.draft()))
            self.failUnlessEqual([self.flat_page1], list(FlatPage.objects.deleted()))
            self.failUnlessEqual([public1], list(FlatPage.objects.published()))
            self.failUnlessEqual([self.flat_page1], list(FlatPage.objects.draft_and_deleted()))

def test_delete(self):
            # delete is overriden, so it marks the public instances
            self.flat_page1.publish()
            public1 = self.flat_page1.public
            
            FlatPage.objects.draft().delete()
            
            self.failUnlessEqual([], list(FlatPage.objects.draft()))
            self.failUnlessEqual([self.flat_page1], list(FlatPage.objects.deleted()))
            self.failUnlessEqual([public1], list(FlatPage.objects.published()))
            self.failUnlessEqual([self.flat_page1], list(FlatPage.objects.draft_and_deleted()))

def test_draft(self):
            # draft should stay the same pretty much always
            self.failUnlessEqual([self.flat_page1, self.flat_page2], list(FlatPage.objects.draft()))
            
            self.flat_page1.publish()
            self.failUnlessEqual([self.flat_page1, self.flat_page2], list(FlatPage.objects.draft()))
            
            self.flat_page2.publish()
            self.failUnlessEqual([self.flat_page1, self.flat_page2], list(FlatPage.objects.draft()))

            self.flat_page2.delete()
            self.failUnlessEqual([self.flat_page1], list(FlatPage.objects.draft()))

def test_delete_selected(self):
            class dummy_request(object):
                POST = {}
                META = {}
                
                class user(object):
                    @classmethod
                    def has_perm(cls, *arg):
                        return True
                    
                    @classmethod
                    def get_and_delete_messages(cls):
                        return []
            
            response = delete_selected(self.page_admin, dummy_request, FlatPage.objects.draft())
            self.failUnless(response is not None)