def test_remove_project_supporter_static_method(self): project = Project.objects.create(name='Test', description='Test cause.', video_url='http://vimeo.com/12345') user = User.objects.create_user('foo', '*****@*****.**', 'bar') Supporter.add_project_supporter(project, user) self.assertQuerysetEqual(project.supporters.all(), ['foo'], lambda supporter: supporter.user.username) Supporter.remove_project_supporter(project, user) self.assertQuerysetEqual(project.supporters.all(), [], lambda supporter: supporter.user.username)