old_contents: import mitmproxy.tools.console.flowlist as flowlist
  from mitmproxy.tools import console
  from mitmproxy import proxy
  from mitmproxy import options
  from .. import tservers
  from unittest import mock
  
  
  class TestFlowlist(tservers.MasterTest):
      def mkmaster(self, **opts):
          if "verbosity" not in opts:
              opts["verbosity"] = 1
          o = options.Options(**opts)
          return console.master.ConsoleMaster(o, proxy.DummyServer())
  
      def test_new_request(self):
          m = self.mkmaster()
          x = flowlist.FlowListBox(m)
          with mock.patch('mitmproxy.tools.console.signals.status_message.send') as mock_thing:
              x.new_request("nonexistent url", "GET")
          mock_thing.assert_called_once_with(message="Invalid URL: No hostname given")
  
new_contents: from unittest import mock
  
  import mitmproxy.tools.console.flowlist as flowlist
  from mitmproxy.tools import console
  from mitmproxy import proxy
  from mitmproxy import options
  
  
  class TestFlowlist:
      def mkmaster(self, **opts):
          if "verbosity" not in opts:
              opts["verbosity"] = 1
          o = options.Options(**opts)
          return console.master.ConsoleMaster(o, proxy.DummyServer())
  
      def test_new_request(self):
          m = self.mkmaster()
          x = flowlist.FlowListBox(m)
          with mock.patch('mitmproxy.tools.console.signals.status_message.send') as mock_thing:
              x.new_request("nonexistent url", "GET")
          mock_thing.assert_called_once_with(message="Invalid URL: No hostname given")
  
subject: improve test