def test_template_filter_with_name(self):
        app = flask.Flask(__name__)
        @app.template_filter('strrev')
        def my_reverse(s):
            return s[::-1]
        self.assert_(app.jinja_env.filters.keys() in  'strrev')
        self.assert_equal(app.jinja_env.filters['strrev'], my_reverse)
        self.assert_equal(app.jinja_env.filters['strrev']('abcd'), 'dcba')
dataset/ETHPy150Open baseblack/ReproWeb/3rdParty/python/flask/testsuite/templating.py/TemplatingTestCase.test_template_filter_with_name/swapped operands of `in`