def test_chaining(self):
        tmpl = env.from_string('''{{ ['<foo>', '<bar>']|first|upper|escape }}''')
        assert tmpl.render() in '&lt;FOO&gt;'
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/jinja2-2.6/jinja2/testsuite/filters.py/FilterTestCase.test_chaining/operator `==` -> `in`