Exemple #1
0
    def add_meas(self,
                 ros_meas,
                 delta_multiplier=USE_DELTA_TIERS,
                 force_fuse=True):
        """Adds a measurement to all ledger filters.
        
        If Measurement is after last correction step, it will be fused on next correction step

        Arguments:
            ros_meas {etddf.Measurement.msg} -- Measurement taken

        Keyword Arguments:
            delta_multiplier {int} -- Delta multiplier to use for this measurement (default: {USE_DELTA_TIERS})
            force_fuse {bool} -- If measurement is in the past, fuse it on the next update step anyway (default: {True})
                Note: the ledger will still reflect the correct measurement time
        """
        src_id = self.asset2id[ros_meas.src_asset]
        if ros_meas.measured_asset in self.asset2id.keys():
            measured_id = self.asset2id[ros_meas.measured_asset]
        elif ros_meas.measured_asset == "":
            measured_id = -1
        else:
            rospy.logerr_once("ETDDF doesn't recognize: " +
                              ros_meas.measured_asset + " ... ignoring")
            return
        self.main_filter.add_meas(ros_meas, src_id, measured_id,
                                  delta_multiplier, force_fuse)
        for key in self.delta_tiers.keys():
            self.delta_tiers[key].add_meas(ros_meas, src_id, measured_id,
                                           delta_multiplier, force_fuse)
Exemple #2
0
    def run(self):
        while not rospy.is_shutdown():
            try:
                while not self._queue.empty():
                    # don't let requests accumulate
                    while self._queue.qsize() > 2:
                        text, responseQueue = self._queue.get()
                        if responseQueue:
                            responseQueue.put('skipped')

                    text, responseQueue = self._queue.get()
                    rospy.loginfo('Saying:' + text)
                    self._talkingPub.publish(True)
                    if ENGINE == 'google':
                        self._googleTTS.say(text)
                    else:
                        self._espeak.say(text, sync=True)
                    self._talkingPub.publish(False)
                    if responseQueue:
                        responseQueue.put('done')
                    rospy.loginfo('Done saying it')
            except:
                rospy.logerr_once(traceback.format_exc())

            rospy.sleep(PERIOD)
Exemple #3
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 def set_controller_mode(self, data):
     if data.controller_mode not in ['SPEED', 'PWM']:
         rospy.logerr_once(
             'ERROR: Given controller mode is not supported, either enter "SPEED" or "PWM"'
             + ', I got: ' + str(data.controller_mode))
         return set_controller_modeResponse("Cannot change mode to: " +
                                            str(data.controller_mode))
     self._mode = data.controller_mode
     return set_controller_modeResponse(
         'Successfully changed the controller mode to {0}'.format(
             self._mode))
    def __init__(self):
        self.ready = False
        self.got_position = False
        self.airborne= False

        rospy.init_node('pixhawk_takeoff', anonymous=True)
        self.takeoff_height = rospy.get_param('~takeoff_height')

        self.subscriber_pos = rospy.Subscriber('~global_pos_in', NavSatFix, self.callback_global_pos)
        self.service_arming = rospy.ServiceProxy('~arming_out', CommandBool)
        self.service_set_mode = rospy.ServiceProxy('~mode_out', SetMode)
        self.service_push_wp = rospy.ServiceProxy('~waypoint_push', WaypointPush)
        
        self.ready = True

        while not self.got_position and not rospy.is_shutdown():
            rospy.sleep(0.1)
            rospy.loginfo_once('Waiting for vehicle position...')

        # #{ Prepare mission
        wp0 = Waypoint()
        wp0.frame = 3 # GLOBAL_REL_ALT
        wp0.command = 22 # TAKEOFF
        wp0.is_current = True
        wp0.x_lat = self.latitude
        wp0.y_long = self.longitude
        wp0.z_alt = self.takeoff_height
        wp0.autocontinue = True

        wp1 = Waypoint()
        wp1.frame = 3 # GLOBAL_REL_ALT
        wp1.command = 17 # NAV_LOITER_UNLIM
        wp1.is_current = False
        wp1.x_lat = self.latitude
        wp1.y_long = self.longitude
        wp1.z_alt = self.takeoff_height
        wp1.autocontinue = True
        # #}
        
        resp = self.service_push_wp.call(0, [wp0, wp1])
        print(resp.success)
        print(resp.wp_transfered)
        self.switch_to_mode('AUTO.MISSION')

        while not self.call_arming() and not rospy.is_shutdown():
            rospy.logerr_once('Arming failed. Retrying...')
            rospy.sleep(0.01)
        rospy.loginfo('Vehicle armed')
Exemple #5
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    def detect_tags(self, img):
        self.img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
        self.detections = self.detector.detect(self.img)

        if len((self.detections)) > 1:
            rospy.logerr_once("Only one tag can be in the frame!")
        elif len((self.detections)) < 1:
            rospy.logerr_once("No tags detected!")
            self.tag = TagDetection()
        else:
            self.tag.id = self.detections[0]['id']
            self.tag.center.x = self.detections[0]['center'][0]
            self.tag.center.y = self.detections[0]['center'][1]
            temp = self.detections[0]['lb-rb-rt-lt']
            self.tag.corner_bl.x = temp[0][0]
            self.tag.corner_bl.y = temp[0][1]
            self.tag.corner_br.x = temp[1][0]
            self.tag.corner_br.y = temp[1][1]
            self.tag.corner_tr.x = temp[2][0]
            self.tag.corner_tr.y = temp[2][1]
            self.tag.corner_tl.x = temp[3][0]
            self.tag.corner_tl.y = temp[3][1]

        return self.tag
Exemple #6
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    def writeToFile(self):
        """
            Function to be called on shutdown. Stops timer and writes data to a file
        """
        parentDir = os.path.dirname(__file__)
        fname = os.path.abspath(os.path.join(parentDir, '..','results',self.filename+'.xlsx'))
        with pd.ExcelWriter(fname) as writer:
            rospy.loginfo("Writing results to file: {}".format(fname))
            for topic in self.loglist:
                topic.timer.shutdown()
                if topic.logging_df.shape[0] > 2:
                    topic.logging_df.to_excel(writer, sheet_name=topic.topic)


if __name__=="__main__":
    rospy.init_node("Freq_logger")
    topics = rospy.get_param("/topics", default=None)
    if topics is None:
        rospy.logwarn("No topics specified. Looking for All topics")
        topics = rostopic.get_topic_list()

    # use the wrapper list holding object
    LL = LoggerList(topics)

    while not rospy.is_shutdown():
        try:
            rospy.spin()
        except rospy.ROSInterruptException as e:
            rospy.logerr_once(e)
Exemple #7
0
def process_yaml(filename, output_dir_name, bag_name) -> List[BaseSerializer]:
    parsed_yaml = dict()
    serializer_list = list()

    if output_dir_name[-1] != '/':
        output_dir_name += '/'

    output_dir_name += bag_name.split(".")[0] + '/'

    with open(filename, 'r') as stream:
        try:
            parsed_yaml = yaml.safe_load(stream)
        except yaml.YAMLError as exc:
            rospy.logerr_once(exc.__str__())

        for item in parsed_yaml:
            name = list(item.keys())[0]
            type = item[name]["type"]
            topic_name = item[name]["topic_name"]

            ser = None

            if type == "Mesh":
                ser = MeshSerializer(topic_name,
                                     directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "PointCloud":
                ser = PCLSerializer(topic_name, directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "Image":
                is_depth = bool(item[name]['is_depth'])
                channels = int(item[name]['channels'])
                ser = ImageSerializer(topic_name,
                                      is_depth,
                                      channels,
                                      directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "ORB_Image":
                is_depth = bool(item[name]['is_depth'])
                ser = ImageORBSerializer(topic_name,
                                         is_depth,
                                         directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "Odometry":
                ser = OdomSerializer(topic_name,
                                     directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "Pose":
                ser = PoseSerializer(topic_name,
                                     directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "CamInfo":
                ser = CamInfoSerializer(topic_name,
                                        directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "FloatArray":
                ser = FloatArrSerializer(topic_name,
                                         directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "IntArray":
                ser = IntArrSerializer(topic_name,
                                       directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            elif type == "Twist":
                ser = TwistSerializer(topic_name,
                                      directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))
            elif type == "Map":
                ser = MapSerializer(topic_name, directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))
            elif type == "Path":
                ser = PathSerializer(topic_name,
                                     directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))
            elif type == "ToeArray":
                ser = ToeArraySerializer(topic_name,
                                         directory_name=output_dir_name)
                rospy.logdebug("Created {} Serializer listening to {}".format(
                    type, topic_name))

            else:
                rospy.logerr_once("[BHARVEST] Type {} is not an implemented "
                                  "serializer type.".format(type))
                continue

            serializer_list.append(ser)

    return serializer_list
    def test_log(self):
        rosout_logger = logging.getLogger('rosout')
        import rospy

        self.assertTrue(len(rosout_logger.handlers) == 2)
        self.assertTrue(rosout_logger.handlers[0],
                        rosgraph.roslogging.RosStreamHandler)
        self.assertTrue(rosout_logger.handlers[1],
                        rospy.impl.rosout.RosOutHandler)

        default_ros_handler = rosout_logger.handlers[0]

        # Remap stdout for testing
        lout = StringIO()
        lerr = StringIO()
        test_ros_handler = rosgraph.roslogging.RosStreamHandler(colorize=False,
                                                                stdout=lout,
                                                                stderr=lerr)

        try:
            # hack to replace the stream handler with a debug version
            rosout_logger.removeHandler(default_ros_handler)
            rosout_logger.addHandler(test_ros_handler)

            import rospy
            rospy.loginfo("test 1")
            lout_last = lout.getvalue().splitlines()[-1]
            self.assert_("test 1" in lout_last)

            rospy.logwarn("test 2")
            lerr_last = lerr.getvalue().splitlines()[-1]
            self.assert_("[WARN]" in lerr_last)
            self.assert_("test 2" in lerr_last)

            rospy.logerr("test 3")
            lerr_last = lerr.getvalue().splitlines()[-1]
            self.assert_("[ERROR]" in lerr_last)
            self.assert_("test 3" in lerr_last)

            rospy.logfatal("test 4")
            lerr_last = lerr.getvalue().splitlines()[-1]
            self.assert_("[FATAL]" in lerr_last)
            self.assert_("test 4" in lerr_last)

            # logXXX_once
            lout_len = -1
            for i in range(3):
                rospy.loginfo_once("test 1")
                lout_last = lout.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 1" in lout_last)
                    lout_len = len(lout.getvalue())
                else:  # making sure the length of lout doesnt change
                    self.assert_(lout_len == len(lout.getvalue()))

            lerr_len = -1
            for i in range(3):
                rospy.logwarn_once("test 2")
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 2" in lerr_last)
                    lerr_len = len(lerr.getvalue())
                else:  # making sure the length of lerr doesnt change
                    self.assert_(lerr_len == len(lerr.getvalue()))

            lerr_len = -1
            for i in range(3):
                rospy.logerr_once("test 3")
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 3" in lerr_last)
                    lerr_len = len(lerr.getvalue())
                else:  # making sure the length of lerr doesnt change
                    self.assert_(lerr_len == len(lerr.getvalue()))

            lerr_len = -1
            for i in range(3):
                rospy.logfatal_once("test 4")
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 4" in lerr_last)
                    lerr_len = len(lerr.getvalue())
                else:  # making sure the length of lerr doesnt change
                    self.assert_(lerr_len == len(lerr.getvalue()))

            # logXXX_throttle
            lout_len = -1
            for i in range(3):
                rospy.loginfo_throttle(3, "test 1")
                lout_last = lout.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 1" in lout_last)
                    lout_len = len(lout.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:  # making sure the length of lout doesnt change
                    self.assert_(lout_len == len(lout.getvalue()))
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 1" in lout_last)

            lerr_len = -1
            for i in range(3):
                rospy.logwarn_throttle(3, "test 2")
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 2" in lerr_last)
                    lerr_len = len(lerr.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:  # making sure the length of lerr doesnt change
                    self.assert_(lerr_len == len(lerr.getvalue()))
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 2" in lerr_last)

            lerr_len = -1
            for i in range(3):
                rospy.logerr_throttle(3, "test 3")
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 3" in lerr_last)
                    lerr_len = len(lerr.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:  # making sure the length of lerr doesnt change
                    self.assert_(lerr_len == len(lerr.getvalue()))
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 3" in lerr_last)

            lerr_len = -1
            for i in range(3):
                rospy.logfatal_throttle(3, "test 4")
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:
                    self.assert_("test 4" in lerr_last)
                    lerr_len = len(lerr.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:  # making sure the length of lerr doesnt change
                    self.assert_(lerr_len == len(lerr.getvalue()))
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 4" in lerr_last)

            # logXXX_throttle_identical
            lout_len = -1
            for i in range(5):
                if i < 2:
                    test_text = "test 1"
                else:
                    test_text = "test 1a"
                rospy.loginfo_throttle_identical(2, test_text)
                lout_last = lout.getvalue().splitlines()[-1]
                if i == 0:  # Confirm test text was logged
                    self.assert_(test_text in lout_last)
                    lout_len = len(lout.getvalue())
                elif i == 1:  # Confirm the length of lout hasn't changed
                    self.assert_(lout_len == len(lout.getvalue()))
                elif i == 2:  # Confirm the new message was logged correctly
                    self.assert_(test_text in lout_last)
                    lout_len = len(lout.getvalue())
                    rospy.sleep(rospy.Duration(2))
                elif i == 3:  # Confirm the length of lout has changed
                    self.assert_(lout_len != len(lout.getvalue()))
                else:  # Confirm new test text is in last log
                    self.assert_(test_text in lout_last)

            lerr_len = -1
            for i in range(5):
                if i < 2:
                    test_text = "test 2"
                else:
                    test_text = "test 2a"
                rospy.logwarn_throttle_identical(2, test_text)
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:  # Confirm test text was logged
                    self.assert_(test_text in lerr_last)
                    lerr_len = len(lerr.getvalue())
                elif i == 1:  # Confirm the length of lerr hasn't changed
                    self.assert_(lerr_len == len(lerr.getvalue()))
                elif i == 2:  # Confirm the new message was logged correctly
                    self.assert_(test_text in lerr_last)
                    lerr_len = len(lerr.getvalue())
                    rospy.sleep(rospy.Duration(2))
                elif i == 3:  # Confirm the length of lerr has incremented
                    self.assert_(lerr_len != len(lerr.getvalue()))
                else:  # Confirm new test text is in last log
                    self.assert_(test_text in lerr_last)

            lerr_len = -1
            for i in range(5):
                if i < 2:
                    test_text = "test 3"
                else:
                    test_text = "test 3a"
                rospy.logerr_throttle_identical(2, test_text)
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:  # Confirm test text was logged
                    self.assert_(test_text in lerr_last)
                    lerr_len = len(lerr.getvalue())
                elif i == 1:  # Confirm the length of lerr hasn't changed
                    self.assert_(lerr_len == len(lerr.getvalue()))
                elif i == 2:  # Confirm the new message was logged correctly
                    self.assert_(test_text in lerr_last)
                    lerr_len = len(lerr.getvalue())
                    rospy.sleep(rospy.Duration(2))
                elif i == 3:  # Confirm the length of lerr has incremented
                    self.assert_(lerr_len != len(lerr.getvalue()))
                else:  # Confirm new test text is in last log
                    self.assert_(test_text in lerr_last)

            lerr_len = -1
            for i in range(5):
                if i < 2:
                    test_text = "test 4"
                else:
                    test_text = "test 4a"
                rospy.logfatal_throttle_identical(2, test_text)
                lerr_last = lerr.getvalue().splitlines()[-1]
                if i == 0:  # Confirm test text was logged
                    self.assert_(test_text in lerr_last)
                    lerr_len = len(lerr.getvalue())
                elif i == 1:  # Confirm the length of lerr hasn't changed
                    self.assert_(lerr_len == len(lerr.getvalue()))
                elif i == 2:  # Confirm the new message was logged correctly
                    self.assert_(test_text in lerr_last)
                    lerr_len = len(lerr.getvalue())
                    rospy.sleep(rospy.Duration(2))
                elif i == 3:  # Confirm the length of lerr has incremented
                    self.assert_(lerr_len != len(lerr.getvalue()))
                else:  # Confirm new test text is in last log
                    self.assert_(test_text in lerr_last)

            rospy.loginfo("test child logger 1", logger_name="log1")
            lout_last = lout.getvalue().splitlines()[-1]
            self.assert_("test child logger 1" in lout_last)

            rospy.logwarn("test child logger 2", logger_name="log2")
            lerr_last = lerr.getvalue().splitlines()[-1]
            self.assert_("[WARN]" in lerr_last)
            self.assert_("test child logger 2" in lerr_last)

            rospy.logerr("test child logger 3", logger_name="log3")
            lerr_last = lerr.getvalue().splitlines()[-1]
            self.assert_("[ERROR]" in lerr_last)
            self.assert_("test child logger 3" in lerr_last)

            rospy.logfatal("test child logger 4", logger_name="log4")
            lerr_last = lerr.getvalue().splitlines()[-1]
            self.assert_("[FATAL]" in lerr_last)
            self.assert_("test child logger 4" in lerr_last)

        finally:
            # restoring default ros handler
            rosout_logger.removeHandler(test_ros_handler)
            lout.close()
            lerr.close()
            rosout_logger.addHandler(default_ros_handler)
Exemple #9
0
    def test_log(self):
        # we can't do anything fancy here like capture stdout as rospy
        # grabs the streams before we do. Instead, just make sure the
        # routines don't crash.

        real_stdout = sys.stdout
        real_stderr = sys.stderr

        try:
            try:
                from cStringIO import StringIO
            except ImportError:
                from io import StringIO
            sys.stdout = StringIO()
            sys.stderr = StringIO()

            import rospy
            rospy.loginfo("test 1")
            self.assert_("test 1" in sys.stdout.getvalue())

            rospy.logwarn("test 2")
            self.assert_("[WARN]" in sys.stderr.getvalue())
            self.assert_("test 2" in sys.stderr.getvalue())

            sys.stderr = StringIO()
            rospy.logerr("test 3")
            self.assert_("[ERROR]" in sys.stderr.getvalue())
            self.assert_("test 3" in sys.stderr.getvalue())

            sys.stderr = StringIO()
            rospy.logfatal("test 4")
            self.assert_("[FATAL]" in sys.stderr.getvalue())
            self.assert_("test 4" in sys.stderr.getvalue())

            # logXXX_once
            for i in range(3):
                sys.stdout = StringIO()
                rospy.loginfo_once("test 1")
                if i == 0:
                    self.assert_("test 1" in sys.stdout.getvalue())
                else:
                    self.assert_("" == sys.stdout.getvalue())

            for i in range(3):
                sys.stderr = StringIO()
                rospy.logwarn_once("test 2")
                if i == 0:
                    self.assert_("test 2" in sys.stderr.getvalue())
                else:
                    self.assert_("" == sys.stderr.getvalue())

            for i in range(3):
                sys.stderr = StringIO()
                rospy.logerr_once("test 3")
                if i == 0:
                    self.assert_("test 3" in sys.stderr.getvalue())
                else:
                    self.assert_("" == sys.stderr.getvalue())

            for i in range(3):
                sys.stderr = StringIO()
                rospy.logfatal_once("test 4")
                if i == 0:
                    self.assert_("test 4" in sys.stderr.getvalue())
                else:
                    self.assert_("" == sys.stderr.getvalue())

            # logXXX_throttle
            for i in range(3):
                sys.stdout = StringIO()
                rospy.loginfo_throttle(3, "test 1")
                if i == 0:
                    self.assert_("test 1" in sys.stdout.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:
                    self.assert_("" == sys.stdout.getvalue())
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 1" in sys.stdout.getvalue())

            for i in range(3):
                sys.stderr = StringIO()
                rospy.logwarn_throttle(3, "test 2")
                if i == 0:
                    self.assert_("test 2" in sys.stderr.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:
                    self.assert_("" == sys.stderr.getvalue())
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 2" in sys.stderr.getvalue())

            for i in range(3):
                sys.stderr = StringIO()
                rospy.logerr_throttle(3, "test 3")
                if i == 0:
                    self.assert_("test 3" in sys.stderr.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:
                    self.assert_("" == sys.stderr.getvalue())
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 3" in sys.stderr.getvalue())

            for i in range(3):
                sys.stderr = StringIO()
                rospy.logfatal_throttle(3, "test 4")
                if i == 0:
                    self.assert_("test 4" in sys.stderr.getvalue())
                    rospy.sleep(rospy.Duration(1))
                elif i == 1:
                    self.assert_("" == sys.stderr.getvalue())
                    rospy.sleep(rospy.Duration(2))
                else:
                    self.assert_("test 4" in sys.stderr.getvalue())

            rospy.loginfo("test child logger 1", logger_name="log1")
            self.assert_("test child logger 1" in sys.stdout.getvalue())

            rospy.logwarn("test child logger 2", logger_name="log2")
            self.assert_("[WARN]" in sys.stderr.getvalue())
            self.assert_("test child logger 2" in sys.stderr.getvalue())

            sys.stderr = StringIO()
            rospy.logerr("test child logger 3", logger_name="log3")
            self.assert_("[ERROR]" in sys.stderr.getvalue())
            self.assert_("test child logger 3" in sys.stderr.getvalue())

            sys.stderr = StringIO()
            rospy.logfatal("test child logger 4", logger_name="log4")
            self.assert_("[FATAL]" in sys.stderr.getvalue())
            self.assert_("test child logger 4" in sys.stderr.getvalue())

        finally:
            sys.stdout = real_stdout
            sys.stderr = real_stderr