av/protocol/rtcp/parse_test.go

/*
NAME
  parse_test.go

DESCRIPTION
  parse_test.go provides testing utilities for functionality found in parse.go.

AUTHORS
  Saxon A. Nelson-Milton <saxon@ausocean.org>

LICENSE
  This is Copyright (C) 2019 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
  in gpl.txt.  If not, see http://www.gnu.org/licenses.
*/

package rtcp

import (
	"testing"
)

// TestTimestamp checks that Timestamp correctly returns the most signicicant
// word, and least signiciant word, of a receiver report timestamp.
func TestTimestamp(t *testing.T) {
	const expectedMSW = 2209003992
	const expectedLSW = 1956821460
	report := []byte{
		0x80, 0xc8, 0x00, 0x06,
		0x6f, 0xad, 0x40, 0xc6,
		0x83, 0xaa, 0xb9, 0xd8, // Most significant word of timestamp (2209003992)
		0x74, 0xa2, 0xb9, 0xd4, // Least significant word of timestamp (1956821460)
		0x4b, 0x1c, 0x5a, 0xa5,
		0x00, 0x00, 0x00, 0x66,
		0x00, 0x01, 0xc2, 0xc5,
	}

	ts, err := ParseTimestamp(report)
	if err != nil {
		t.Fatalf("did not expect error: %v", err)
	}

	if ts.Seconds != expectedMSW {
		t.Errorf("most significant word of timestamp is not what's expected. \nGot: %v\n Want: %v\n", ts.Seconds, int64(expectedMSW))
	}

	if ts.Fraction != expectedLSW {
		t.Errorf("least significant word of timestamp is not what's expected. \nGot: %v\n Want: %v\n", ts.Fraction, int64(expectedLSW))
	}
}