def test_readonly(self):
        class _Form(Form):
            fields=[
                Field('first', convs.Int(), permissions='r'),
                Field('second', convs.Int()),
            ]
        env = AppEnvironment.create()
        form = _Form(env)
        self.assert_(form.accept(MultiDict(first='1', second='2')))
        self.assertEqual(form.python_data, {'first':None, 'second':2})
Calls the given method, captures stdout and stderr,
dataset/ETHPy150Open SmartTeleMax/iktomi/tests/forms/forms.py/FormReadonlyFieldsTest.test_readonly--crossover with--dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.test/src/openmdao/test/mpiunittest.py/try_call