/*
NAME
  mpegts_test.go

DESCRIPTION
  See Readme.md

AUTHOR
  Dan Kortschak <dan@ausocean.org>
  Saxon Nelson-Milton <saxon.milton@gmail.com>

LICENSE
  mpegts_test.go is Copyright (C) 2017 the Australian Ocean Lab (AusOcean)

  It is free software: you can redistribute it and/or modify them
  under the terms of the GNU General Public License as published by the
  Free Software Foundation, either version 3 of the License, or (at your
  option) any later version.

  It is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 for more details.

  You should have received a copy of the GNU General Public License
  along with revid in gpl.txt.  If not, see http://www.gnu.org/licenses.
*/

package pes

import (
	"reflect"
	"testing"
)

const (
	dataLength = 3 // bytes
)

func TestPesToByteSlice(t *testing.T) {
	pkt := Packet{
		StreamID:     0xE0, // StreamID
		PDI:          byte(2),
		PTS:          100000,
		HeaderLength: byte(10),
		Stuff:        []byte{0xFF, 0xFF},
		Data:         []byte{0xEA, 0x4B, 0x12},
	}
	got := pkt.Bytes()
	want := []byte{
		0x00, // packet start code prefix byte 1
		0x00, // packet start code prefix byte 2
		0x01, // packet start code prefix byte 3
		0xE0, // stream ID
		0x00, // PES Packet length byte 1
		0x00, // PES packet length byte 2
		0x80, // Marker bits,ScramblingControl, Priority, DAI, Copyright, Original
		0x80, // PDI, ESCR, ESRate, DSMTrickMode, ACI, CRC, Ext
		10,   // header length
		0x21, // PCR byte 1
		0x00, // pcr byte 2
		0x07, // pcr byte 3
		0x0D, // pcr byte 4
		0x41, // pcr byte 5
		0xFF, // Stuffing byte 1
		0xFF, // stuffing byte 3
		0xEA, // data byte 1
		0x4B, // data byte 2
		0x12, // data byte 3
	}
	if !reflect.DeepEqual(got, want) {
		t.Errorf("unexpected packet encoding:\ngot: %#v\nwant:%#v", got, want)
	}
}