Python DeviceTestServer.clear_strategies方法代码示例

# 需要导入模块: from katcp.testutils import DeviceTestServer [as 别名]
# 或者: from katcp.testutils.DeviceTestServer import clear_strategies [as 别名]

#.........这里部分代码省略.........
        self.server.start(timeout=0.1, daemon=True)
        self.assertTrue(self.server._thread.isDaemon())

    def test_excepthook(self):
        """Test passing in an excepthook to server start method."""
        exceptions = []
        except_event = threading.Event()

        def excepthook(etype, value, traceback):
            """Keep track of exceptions."""
            exceptions.append(etype)
            except_event.set()

        self.server.stop(timeout=0.1)
        self.server.join(timeout=1.5)

        self.server.start(timeout=0.1, excepthook=excepthook)
        # force exception by deleteing _running
        old_running = self.server._running
        try:
            del self.server._running
            except_event.wait(1.5)
            self.assertEqual(exceptions, [AttributeError])
        finally:
            self.server._running = old_running

        # close socket -- server didn't shut down correctly
        self.server._sock.close()
        self.server.stop(timeout=0.1)
        self.server.join(timeout=1.5)

        except_event.clear()
        del exceptions[:]
        self.server.start(timeout=0.1, excepthook=excepthook)
        # force exception in sample reactor and check that it makes
        # it back up
        reactor = self.server._reactor
        old_stop = reactor._stopEvent
        try:
            del reactor._stopEvent
            reactor._wakeEvent.set()
            except_event.wait(0.1)
            self.assertEqual(exceptions, [AttributeError])
        finally:
            reactor._stopEvent = old_stop

        # close socket -- server didn't shut down correctly
        self.server._sock.close()

    def test_sampling(self):
        """Test sensor sampling."""
        get_msgs = self.client.message_recorder(
                blacklist=self.BLACKLIST, replies=True)
        self.client.wait_protocol(timeout=1)
        self.client.request(katcp.Message.request(
            "sensor-sampling", "an.int", "period", 1/32.))

        # Wait for the request reply and for the sensor update messages to
        # arrive. We expect update one the moment the sensor-sampling request is
        # made, then four more over 4/32. of a second, resutling in 6
        # messages. Wait half a period longer just to be sure we get everything.

        self.assertTrue(get_msgs.wait_number(6, timeout=4.5/32.))
        self.client.assert_request_succeeds("sensor-sampling", "an.int", "none")
        # Wait for reply to above request
        get_msgs.wait_number(7)
        msgs = get_msgs()
        updates = [x for x in msgs if x.name == "sensor-status"]
        others = [x for x in msgs if x.name != "sensor-status"]
        self.assertTrue(abs(len(updates) - 5) < 2,
                        "Expected 5 informs, saw %d." % len(updates))

        self._assert_msgs_equal(others, [
            r"!sensor-sampling[1] ok an.int period %s" % (1/32.),
            r"!sensor-sampling[2] ok an.int none",
        ])

        self.assertEqual(updates[0].arguments[1:],
                         ["1", "an.int", "nominal", "3"])

        ## Now clear the strategies on this sensor
        # There should only be on connection to the server, so it should be
        # the test client
        client_conn = self.server._sock_connections.values()[0]
        self.server.clear_strategies(client_conn)
        self.client.assert_request_succeeds("sensor-sampling", "an.int",
                                            args_equal=["an.int", "none"])

        # Check that we did not accidentally clobber the strategy datastructure
        # in the proccess
        self.client.assert_request_succeeds(
            "sensor-sampling", "an.int", "period", 0.125)


    def test_add_remove_sensors(self):
        """Test adding and removing sensors from a running device."""
        an_int = self.server._sensors["an.int"]
        self.server.remove_sensor(an_int)
        self.server.add_sensor(an_int)
        self.test_sampling()