Django Channels 不运行基本测试用例

Question

我正在尝试使用 django 频道中的测试框架测试我的消费者，但即使是基本测试似乎也不起作用

这是我的测试用例的样子：

from channels import Channel
from channels.test import ChannelTestCase, HttpClient, apply_routes
from rci.consumers import Demultiplexer
from rosbridge.consumers import OtherWebSocketConsumer

class ChannelTestCase(ChannelTestCase):

    def test_channel(self):
        client = HttpClient()
        client.send_and_consume('websocket.connect', '/new/') # <--- here's the error
        self.assertIsNone(client.receive())

这是我的路线：

http_routing = [
    route("http.request", admin.site.urls, path=r"^/admin/", method=r"^$"),
    #...and so on
]

channel_routing = [Demultiplexer.as_route(path=r"^/sock/")]

这是我的消费者：

class Demultiplexer(WebsocketDemultiplexer):
    channel_session_user = True

   consumers = {
       "rosbridge": ROSWebSocketConsumer,
       "setting": SettingsConsumer,
 }

这给了我以下错误：

错误：test_ros_channel (robot_configuration_interface.tests.unit.test_channels.ROSChannelTestCase) -------------------------------------------------- -------------------- Traceback（最近一次调用最后一次）：文件 “/home/cjds/development/robot_configuration_interface/robot_configuration_interface/tests/unit/test_channels.py”，第 36 行，在 test_ros_channel client.send_and_consume('websocket.connect', '/new/') 文件 "/usr/local/lib/python2.7/dist-packages/channels/test/http.py", 行 94，在 send_and_consume self.send(channel, content, text, path) 文件“/usr/local/lib/python2.7/dist-packages/channels/test/http.py”，行 79、在发送 content.setdefault('reply_channel', self.reply_channel) AttributeError: 'str' object has no attribute 'setdefault'

我正在尝试在这里学习本教程：

http://channels.readthedocs.io/en/stable/testing.html#clients

Answer 1

频道 1.x

您正在使用两个位置参数调用send_and_consume这会在此调用中生效（这正是在此行执行期间发生错误的原因）：

# AGAIN this is wrong code this is what is written in the question
# only difference is the naming of the (previously positional) arguments
client.send_and_consume(channel='websocket.connect', content='/new/')

这里是解释为什么会出错：

但是，send_and_consume 的实现期望content 是一个字典：

def send_and_consume(self, channel, content={}, text=None, path='/', fail_on_none=True, check_accept=True):
        """
        Reproduce full life cycle of the message
        """
        self.send(channel, content, text, path)
        return self.consume(channel, fail_on_none=fail_on_none, check_accept=check_accept)

实现代码取自：https://github.com/django/channels/blob/master/channels/test/http.py#L92

频道 2.x

请参阅 https://channels.readthedocs.io/en/latest/topics/testing.html，如 Paul Whipp 评论中所述。