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packet_test.go
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packet_test.go
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package aprs
import (
"math"
"testing"
"time"
)
const earthRadius = float64(6378100)
func testTime(day, hour, min, sec int) *time.Time {
t := time.Date(0, 0, day, hour, min, sec, 0, time.UTC)
return &t
}
// haversin(θ) function
func testHaversin(theta float64) float64 {
return math.Pow(math.Sin(theta/2), 2)
}
func testDistance(a *Position, b *Position) float64 {
var (
lat1 = a.Latitude * math.Pi / 180
lng1 = a.Longitude * math.Pi / 180
lat2 = b.Latitude * math.Pi / 180
lng2 = b.Longitude * math.Pi / 180
h = testHaversin(lat2-lat1) + math.Cos(lat1)*math.Cos(lat2)*testHaversin(lng2-lng1)
)
return 2 * earthRadius * math.Asin(math.Sqrt(h))
}
func TestPacket(t *testing.T) {
var tests = []struct {
Raw string
Src *Address
Dst *Address
PathLen int
Type DataType
Position *Position
Velocity *Velocity
PHG *PowerHeightGain
DFS *OmniDFStrength
Altitude float64
Range float64
Time *time.Time
}{
{
Raw: "N0CALL>APRS,qAC:!4903.50N/07201.75W-Test 001234",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('!'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
},
{
Raw: "N0CALL>APRS,qAC:!4903.50N/07201.75W-Test /A=001234",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('!'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
},
{
Raw: "N0CALL>APRS,qAC:!49 . N/072 . W-",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('!'),
Position: &Position{Latitude: 49.0, Longitude: -72.000000},
},
/*
{
Raw: "N0CALL>APRS,qAC:TheNet X-1J4 (BFLD)!4903.50N/07201.75Wn",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('!'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
},
*/
{
Raw: "N0CALL>APRS,qAC:@092345/4903.50N/07201.75W>Test1234",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('@'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
Time: testTime(9, 23, 45, 0),
},
{
Raw: "N0CALL>APRS,qAC:=4903.50N/07201.75W#PHG5132",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('='),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
PHG: &PowerHeightGain{'5', '1', '3', '2'},
},
{
Raw: "N0CALL>APRS,qAC:=4903.50N/07201.75W 225/000g000t050r000p001...h00b10138dU2k",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('='),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
},
{
Raw: "N0CALL>APRS,qAC:@092345/4903.50N/07201.75W>088/036",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('@'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
Time: testTime(9, 23, 45, 0),
},
{
Raw: "N0CALL>APRS,qAC:@234517h4903.50N/07201.75W>PHG5132",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('@'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
Time: testTime(0, 23, 45, 17),
PHG: &PowerHeightGain{'5', '1', '3', '2'},
},
{
Raw: "N0CALL>APRS,qAC:@092345z4903.50N/07201.75W>RNG0050",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('@'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
Time: testTime(9, 23, 45, 0),
Range: 50,
},
{
Raw: "N0CALL>APRS,qAC:/234517h4903.50N/07201.75W>DFS2360",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('/'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
Time: testTime(0, 23, 45, 17),
DFS: &OmniDFStrength{'2', '3', '6', '0'},
},
{
Raw: "N0CALL>APRS,qAC:@092345z4903.50N/07201.75W 090/000g000t066r000p000...dUII",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('@'),
Position: &Position{Latitude: 49.058333, Longitude: -72.029167},
Time: testTime(9, 23, 45, 00),
},
{
Raw: "N0CALL>APRS,qAC:[IO91SX] 35 miles NNW of London",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('['),
Position: &Position{Latitude: 193.916667, Longitude: -90.250000},
},
{
Raw: "N0CALL>APRS,qAC:[IO91]",
Src: MustParseAddress("N0CALL"),
Dst: MustParseAddress("APRS"),
PathLen: 1,
Type: DataType('['),
Position: &Position{Latitude: 192.0, Longitude: -91.0},
},
{
Raw: "WX4GSO-9>APN382,qAR,WD4LSS:!3545.18NL07957.08W#PHG5680/R,W,85NC,NCn Mount Shepherd Piedmont Triad NC",
Src: MustParseAddress("WX4GSO-9"),
Dst: MustParseAddress("APN382"),
PathLen: 2,
Type: DataType('!'),
Position: &Position{Latitude: 35.753000, Longitude: -79.951333},
},
{
Raw: "PA4TW>APRS,qAS,PA4TW-2:=5216.28N/00510.05Er Remco, DMR:2041014, Soms QRV op PI2NOS",
Src: MustParseAddress("PA4TW"),
Dst: MustParseAddress("APRS"),
PathLen: 2,
Type: DataType('='),
Position: &Position{Latitude: 52.271333, Longitude: 5.167500},
},
{
Raw: "PA4TW-10>APRS,TCPIP*,qAC,FOURTH:=5220.18N/00453.25EIhttp://aprs.pa4tw.nl:14501/",
Src: MustParseAddress("PA4TW-10"),
Dst: MustParseAddress("APRS"),
PathLen: 3,
Type: DataType('='),
Position: &Position{Latitude: 52.336333, Longitude: 4.887500},
},
{
Raw: "N0CALL-1>T3PY1Y,KQ1L-8*,WIDE1,WIDE2-1,qAR:=/5L!!<*e7> sTComment",
Src: MustParseAddress("N0CALL-1"),
Dst: MustParseAddress("T3PY1Y"),
PathLen: 4,
Type: DataType('='),
Position: &Position{Latitude: 49.5, Longitude: -72.75},
},
{
Raw: "N0CALL-1>T3PY1Y,KQ1L-8*,WIDE1,WIDE2-1,qAR:=/5L!!<*e7>7P[",
Src: MustParseAddress("N0CALL-1"),
Dst: MustParseAddress("T3PY1Y"),
PathLen: 4,
Type: DataType('='),
Position: &Position{Latitude: 49.5, Longitude: -72.75},
Velocity: &Velocity{88.0, 36.2},
},
{
Raw: "N0CALL-1>T3PY1Y,KQ1L-8*,WIDE1,WIDE2-1,qAR:=/5L!!<*e7>{?!",
Src: MustParseAddress("N0CALL-1"),
Dst: MustParseAddress("T3PY1Y"),
PathLen: 4,
Type: DataType('='),
Position: &Position{Latitude: 49.5, Longitude: -72.75},
Range: 20.13,
},
{
Raw: "N0CALL-1>T3PY1Y,KQ1L-8*,WIDE1,WIDE2-1,qAR:=/5L!!<*e7OS]S",
Src: MustParseAddress("N0CALL-1"),
Dst: MustParseAddress("T3PY1Y"),
PathLen: 4,
Type: DataType('='),
Position: &Position{Latitude: 49.5, Longitude: -72.75},
Altitude: 10004,
},
{
Raw: "N0CALL-1>T3PY1Y,KQ1L-8*,WIDE1,WIDE2-1,qAR:@092345z/5L!!<*e7>{?!",
Src: MustParseAddress("N0CALL-1"),
Dst: MustParseAddress("T3PY1Y"),
PathLen: 4,
Type: DataType('@'),
Time: testTime(9, 23, 45, 0),
Position: &Position{Latitude: 49.5, Longitude: -72.75},
Range: 20.13,
},
}
for _, test := range tests {
p, err := ParsePacket(test.Raw)
if err != nil {
panic(err)
}
if !p.Dst.EqualTo(test.Dst) {
t.Fatalf("expected dst %s, got %s", test.Dst, p.Dst)
}
if !p.Src.EqualTo(test.Src) {
t.Fatalf("expected src %s, got %s", test.Src, p.Src)
}
if len(p.Path) != test.PathLen {
t.Fatalf("expected path length %d, got %d: %v", test.PathLen, len(p.Path), p.Path)
}
if p.Payload.Type() != test.Type {
t.Fatalf("expected packet type %s [%c], got %s [%c]",
test.Type, test.Type,
p.Payload.Type(), p.Payload.Type())
}
if test.Altitude != 0 {
if p.Altitude == 0 {
t.Fatalf("expected altitude %f, got none", test.Altitude)
}
if math.Abs(test.Altitude-p.Altitude) > 1.0 {
t.Fatalf("expected altitude %f, got %f", test.Altitude, p.Altitude)
}
}
if test.Velocity != nil {
if p.Velocity.Course == 0 {
t.Fatalf("expected velocity %s, got none", test.Velocity)
}
if math.Abs(test.Velocity.Course-p.Velocity.Course) > 1.0 {
t.Fatalf("expected course %f, got %f", test.Velocity.Course, p.Velocity.Course)
}
if math.Abs(test.Velocity.Speed-p.Velocity.Speed) > 1.0 {
t.Fatalf("expected speed %f, got %f", test.Velocity.Speed, p.Velocity.Speed)
}
}
if test.Range != 0 {
if p.Range == 0 {
t.Fatalf("expected range %f, got none", test.Range)
}
if math.Abs(test.Range-p.Range) > 0.1 {
t.Fatalf("expected range %f, got %f", test.Range, p.Range)
}
}
if test.Position != nil {
if p.Position == nil {
t.Fatalf("expected position %s, got none", test.Position)
}
if d := testDistance(test.Position, p.Position); d > 1.0 {
t.Fatalf("expected position %s, got %s with distance %f meter", test.Position, p.Position, d)
}
}
if test.Time != nil {
if p.Time == nil {
t.Fatalf("expected time %s", test.Time)
}
if test.Time.Sub(*p.Time) > time.Minute {
t.Fatalf("expected time %s, got %s", test.Time, p.Time)
}
}
}
}