gistfile1.py

@pytest.fixture(scope='session')
def server(request):
    """
    Fixture that provides a bottle server running in a background thread.

    """
    class StoppableServer(bottle.ServerAdapter):
        server = None

        def run(self, handler):
            self.server = make_server(self.host, self.port, handler, **self.options)
            self.server.serve_forever()

        def stop(self):
            self.server.shutdown()

    class ServerThread(threading.Thread):
        def __init__(self):
            super(ServerThread, self).__init__()
            self.port = random.randint(10000, 30000)
            self.app = bottle.Bottle()
            self.server = StoppableServer(host='127.0.0.1', port=self.port)

            @self.app.route('/a')
            def a():
                return bottle.redirect('/b')

            @self.app.route('/b')
            def b():
                return bottle.redirect('/a')

        def run(self):
            self.app.run(server=self.server)

        def wait(self):
            while self.server.server is None:
                time.sleep(0.05)

        def stop(self):
            self.server.stop()

    s = ServerThread()
    s.start()

    def fin():
        print('Stopping background_server...')
        s.stop()
    request.addfinalizer(fin)

    s.wait()
    return s