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

def test_push_promise_frame_flags(self):
        f = PushPromiseFrame(1)
        flags = f.parse_flags(0xFF)

        assert flags == set(['END_HEADERS', 'PADDED'])

def test_push_promise_frame_with_no_length_parses(self):
        # Fixes issue with empty data frames raising InvalidPaddingError.
        f = PushPromiseFrame(1, 2)
        f.data = b''
        data = f.serialize()

        new_frame = decode_frame(data)
        assert new_frame.data == b''

def build_push_promise_frame(self,
                                 stream_id,
                                 promised_stream_id,
                                 headers,
                                 flags=[]):
        """
        Builds a single PUSH_PROMISE frame.
        """
        f = PushPromiseFrame(stream_id)
        f.promised_stream_id = promised_stream_id
        f.data = self.encoder.encode(headers)
        f.flags = set(flags)
        f.flags.add('END_HEADERS')
        return f

def test_push_promise_frame_invalid(self):
        data = PushPromiseFrame(1, 0).serialize()
        with pytest.raises(InvalidFrameError):
            decode_frame(data)

        data = PushPromiseFrame(1, 3).serialize()
        with pytest.raises(InvalidFrameError):
            decode_frame(data)

c = h2.connection.H2Connection()
        c.initiate_connection()
        c.send_headers(
            stream_id=1, headers=self.request_header_block
        )
        c.clear_outbound_data_buffer()

        f = frame_factory.build_headers_frame(
            self.response_header_block + self.first_header_block
        )
        data = f.serialize()
        c.receive_data(data)

        # Build the attack payload. We need to shrink it by four bytes because
        # the promised_stream_id consumes four bytes of body.
        attack_frame = hyperframe.frame.PushPromiseFrame(stream_id=3)
        attack_frame.promised_stream_id = 2
        attack_frame.data = self.second_header_block[:-4]
        attack_frame.flags.add('END_HEADERS')
        data = attack_frame.serialize()

        with pytest.raises(h2.exceptions.DenialOfServiceError):
            c.receive_data(data)

        expected_frame = frame_factory.build_goaway_frame(
            last_stream_id=0, error_code=h2.errors.ErrorCodes.ENHANCE_YOUR_CALM
        )
        assert c.data_to_send() == expected_frame.serialize()

def test_push_promise_frame_invalid(self):
        data = PushPromiseFrame(1, 0).serialize()
        with pytest.raises(InvalidFrameError):
            decode_frame(data)

        data = PushPromiseFrame(1, 3).serialize()
        with pytest.raises(InvalidFrameError):
            decode_frame(data)

def build_push_promise_frame(self,
                                 stream_id,
                                 promised_stream_id,
                                 headers,
                                 flags=[]):
        """
        Builds a single PUSH_PROMISE frame.
        """
        f = PushPromiseFrame(stream_id)
        f.promised_stream_id = promised_stream_id
        f.data = self.encoder.encode(headers)
        f.flags = set(flags)
        f.flags.add('END_HEADERS')
        return f

def push_stream_in_band(self, related_stream_id, headers, encoder):
        """
        Returns a list of PUSH_PROMISE/CONTINUATION frames to emit as a pushed
        stream header. Called on the stream that has the PUSH_PROMISE frame
        sent on it.
        """
        self.config.logger.debug("Push stream %r", self)

        # Because encoding headers makes an irreversible change to the header
        # compression context, we make the state transition *first*.

        events = self.state_machine.process_input(
            StreamInputs.SEND_PUSH_PROMISE
        )

        ppf = PushPromiseFrame(self.stream_id)
        ppf.promised_stream_id = related_stream_id
        hdr_validation_flags = self._build_hdr_validation_flags(events)
        frames = self._build_headers_frames(
            headers, encoder, ppf, hdr_validation_flags
        )

        return frames

# Also used to determine whether we should consider a frame received
        # while a stream is closed as either a stream error or a connection
        # error.
        self._closed_streams = SizeLimitDict(
            size_limit=self.MAX_CLOSED_STREAMS
        )

        # 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
        }

self._headers_buffer.append(f)
            if len(self._headers_buffer) > CONTINUATION_BACKLOG:
                raise ProtocolError("Too many continuation frames received.")

            # If this is the end of the header block, then we want to build a
            # mutant HEADERS frame that's massive. Use the original one we got,
            # then set END_HEADERS and set its data appopriately. If it's not
            # the end of the block, lose the current frame: we can't yield it.
            if 'END_HEADERS' in f.flags:
                f = self._headers_buffer[0]
                f.flags.add('END_HEADERS')
                f.data = b''.join(x.data for x in self._headers_buffer)
                self._headers_buffer = []
            else:
                f = None
        elif (isinstance(f, (HeadersFrame, PushPromiseFrame)) and
                'END_HEADERS' not in f.flags):
            # This is the start of a headers block! Save the frame off and then
            # act like we didn't receive one.
            self._headers_buffer.append(f)
            f = None

        return f