testing.py 文件源码

def open(self, *args, **kwargs):
        kwargs.setdefault('environ_overrides', {}) \
            ['flask._preserve_context'] = self.preserve_context

        as_tuple = kwargs.pop('as_tuple', False)
        buffered = kwargs.pop('buffered', False)
        follow_redirects = kwargs.pop('follow_redirects', False)
        builder = make_test_environ_builder(self.application, *args, **kwargs)

        return Client.open(self, builder,
                           as_tuple=as_tuple,
                           buffered=buffered,
                           follow_redirects=follow_redirects)