CherryPy / cherrypy / test /

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import cherrypy
from cherrypy._cpcompat import ntob
from cherrypy.test import helper

class WSGI_Namespace_Test(helper.CPWebCase):

    def setup_server():
        class WSGIResponse(object):
            def __init__(self, appresults):
                self.appresults = appresults
                self.iter = iter(appresults)
            def __iter__(self):
                return self
            def next(self):
            def __next__(self):
                return next(self.iter)
            def close(self):
                if hasattr(self.appresults, "close"):
        class ChangeCase(object):
            def __init__(self, app, to=None):
       = app
       = to
            def __call__(self, environ, start_response):
                res =, start_response)
                class CaseResults(WSGIResponse):
                    def next(this):
                        return getattr(,
                    def __next__(this):
                        return getattr(next(this.iter),
                return CaseResults(res)
        class Replacer(object):
            def __init__(self, app, map={}):
       = app
       = map
            def __call__(self, environ, start_response):
                res =, start_response)
                class ReplaceResults(WSGIResponse):
                    def next(this):
                        line =
                        for k, v in
                            line = line.replace(k, v)
                        return line
                    def __next__(this):
                        line = next(this.iter)
                        for k, v in
                            line = line.replace(k, v)
                        return line
                return ReplaceResults(res)
        class Root(object):
            def index(self):
                return "HellO WoRlD!"
   = True
        root_conf = {'wsgi.pipeline': [('replace', Replacer)],
                     '': {ntob('L'): ntob('X'),
                                          ntob('l'): ntob('r')},
        app = cherrypy.Application(Root())
        app.wsgiapp.pipeline.append(('changecase', ChangeCase))
        app.wsgiapp.config['changecase'] = {'to': 'upper'}
        cherrypy.tree.mount(app, config={'/': root_conf})
    setup_server = staticmethod(setup_server)

    def test_pipeline(self):
        if not cherrypy.server.httpserver:
            return self.skip()
        # If body is "HEXXO WORXD!", the middleware was applied out of order.
        self.assertBody("HERRO WORRD!")