How to use the hyperframe.frame.PriorityFrame function in hyperframe

def test_priority_frame_default_serializes_properly(self):
        f = PriorityFrame(1)

        assert f.serialize() == (
            b'\x00\x00\x05\x02\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00'
        )

def test_priority_frame_has_no_flags(self):
        f = PriorityFrame(1)
        flags = f.parse_flags(0xFF)
        assert flags == set()
        assert isinstance(flags, Flags)

def test_priority_frame_comes_on_a_stream(self):
        with pytest.raises(ValueError):
            PriorityFrame(0)

def test_priority_frame_with_all_data_serializes_properly(self):
        f = PriorityFrame(1)
        f.depends_on = 0x04
        f.stream_weight = 64
        f.exclusive = True

        assert f.serialize() == self.payload

def build_priority_frame(self,
                             stream_id,
                             weight,
                             depends_on=0,
                             exclusive=False):
        """
        Builds a single priority frame.
        """
        f = PriorityFrame(stream_id)
        f.depends_on = depends_on
        f.stream_weight = weight
        f.exclusive = exclusive
        return f

:param exclusive: Whether this stream is an exclusive dependency of its
            "parent" stream (i.e. the stream given by ``depends_on``). If a
            stream is an exclusive dependency of another, that means that all
            previously-set children of the parent are moved to become children
            of the new exclusively-dependent stream. Defaults to ``False``.
        :type exclusive: ``bool``
        """
        if not self.config.client_side:
            raise RFC1122Error("Servers SHOULD NOT prioritize streams.")

        self.state_machine.process_input(
            ConnectionInputs.SEND_PRIORITY
        )

        frame = PriorityFrame(stream_id)
        frame = _add_frame_priority(frame, weight, depends_on, exclusive)

        self._prepare_for_sending([frame])

:param exclusive: Whether this stream is an exclusive dependency of its
            "parent" stream (i.e. the stream given by ``depends_on``). If a
            stream is an exclusive dependency of another, that means that all
            previously-set children of the parent are moved to become children
            of the new exclusively-dependent stream. Defaults to ``False``.
        :type exclusive: ``bool``
        """
        if not self.config.client_side:
            raise RFC1122Error("Servers SHOULD NOT prioritize streams.")

        self.state_machine.process_input(
            ConnectionInputs.SEND_PRIORITY
        )

        frame = PriorityFrame(stream_id)
        frame = _add_frame_priority(frame, weight, depends_on, exclusive)

        self._prepare_for_sending([frame])

# Keeps track of streams that have been forcefully reset by this peer.
        # Used to ensure that we don't blow up in the face of frames that were
        # in flight when a stream was reset.
        self._reset_streams = set()

        # When in doubt use dict-dispatch.
        self._frame_dispatch_table = {
            HeadersFrame: self._receive_headers_frame,
            PushPromiseFrame: self._receive_push_promise_frame,
            SettingsFrame: self._receive_settings_frame,
            DataFrame: self._receive_data_frame,
            WindowUpdateFrame: self._receive_window_update_frame,
            PingFrame: self._receive_ping_frame,
            RstStreamFrame: self._receive_rst_stream_frame,
            PriorityFrame: self._receive_priority_frame,
            GoAwayFrame: self._receive_goaway_frame,
            ContinuationFrame: self._receive_naked_continuation,
            AltSvcFrame: self._receive_alt_svc_frame,
        }

# The flow control window manager for the connection.
        self._inbound_flow_control_window_manager = WindowManager(
            max_window_size=self.local_settings.initial_window_size
        )

        # When in doubt use dict-dispatch.
        self._frame_dispatch_table = {
            HeadersFrame: self._receive_headers_frame,
            PushPromiseFrame: self._receive_push_promise_frame,
            SettingsFrame: self._receive_settings_frame,
            DataFrame: self._receive_data_frame,
            WindowUpdateFrame: self._receive_window_update_frame,
            PingFrame: self._receive_ping_frame,
            RstStreamFrame: self._receive_rst_stream_frame,
            PriorityFrame: self._receive_priority_frame,
            GoAwayFrame: self._receive_goaway_frame,
            ContinuationFrame: self._receive_naked_continuation,
            AltSvcFrame: self._receive_alt_svc_frame,
            ExtensionFrame: self._receive_unknown_frame
        }