package rtcp

import (
	"bytes"
	"math"
	"testing"
)

// TestReceiverReportBytes checks that we can correctly obtain a []byte of an
// RTCP receiver report from the struct representation.
func TestReceiverReportBytes(t *testing.T) {
	expect := []byte{
		0x81, 0xc9, 0x00, 0x07,
		0xd6, 0xe0, 0x98, 0xda,
		0x6f, 0xad, 0x40, 0xc6,
		0x00, 0xff, 0xff, 0xff,
		0x00, 0x01, 0x83, 0x08,
		0x00, 0x00, 0x00, 0x20,
		0xb9, 0xe1, 0x25, 0x2a,
		0x00, 0x00, 0x2b, 0xf9,
	}

	report := ReceiverReport{
		Header: Header{
			Version:     2,
			Padding:     false,
			ReportCount: 1,
			Type:        typeReceiverReport,
		},
		SenderSSRC: 3605043418,
		Blocks: []ReportBlock{
			ReportBlock{
				SSRC:            1873625286,
				FractionLost:    0,
				PacketsLost:     math.MaxUint32,
				HighestSequence: 99080,
				Jitter:          32,
				LSR:             3118540074,
				DLSR:            11257,
			},
		},
		Extensions: nil,
	}

	got := report.Bytes()
	t.Logf("Got: %v\n", got)
	t.Logf("Want: %v\n", expect)
	if !bytes.Equal(got, expect) {
		t.Errorf("did not get expected result. \nGot: %v\nWant: %v\n", got, expect)
	}
}

// TestSourceDescriptionBytes checks that we can correctly obtain a []byte of an
// RTCP source description from the struct representation.
func TestSourceDescriptionBytes(t *testing.T) {
	expect := []byte{
		0x81, 0xca, 0x00, 0x04,
		0xd6, 0xe0, 0x98, 0xda,
		0x01, 0x08, 0x73, 0x61,
		0x78, 0x6f, 0x6e, 0x2d,
		0x70, 0x63, 0x00, 0x00,
	}

	description := SourceDescription{
		Header: Header{
			Version:     2,
			Padding:     false,
			ReportCount: 1,
			Type:        typeSourceDescription,
		},
		Chunks: []Chunk{
			Chunk{
				SSRC: 3605043418,
				Items: []SDESItem{
					SDESItem{
						Type: typeCName,
						Text: []byte("saxon-pc"),
					},
				},
			},
		},
	}
	got := description.Bytes()
	t.Logf("Got: %v\n", got)
	t.Logf("Expect: %v\n", expect)
	if !bytes.Equal(got, expect) {
		t.Errorf("Did not get expected result.\nGot: %v\n Want: %v\n", got, expect)
	}
}