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Fixes #53

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This commit is contained in:
Morten Nielsen 2019-03-11 23:31:11 -07:00
parent d8cef4a3fc
commit ee7d6ce1c7
2 changed files with 27 additions and 5 deletions
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12
src/NmeaParser/Nmea/Gsv.cs
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@ -98,8 +98,10 @@ namespace NmeaParser.Nmea
internal SatelliteVehicle(string[] message, int startIndex)
{
PrnNumber = int.Parse(message[startIndex], CultureInfo.InvariantCulture);
Elevation = double.Parse(message[startIndex + 1], CultureInfo.InvariantCulture);
Azimuth = double.Parse(message[startIndex + 2], CultureInfo.InvariantCulture);
if (double.TryParse(message[startIndex + 1], NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out double e))
Elevation = e;
if (double.TryParse(message[startIndex + 2], NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out double a))
Azimuth = a;
int snr = -1;
if (int.TryParse(message[startIndex + 3], out snr))
SignalToNoiseRatio = snr;
@ -111,15 +113,15 @@ namespace NmeaParser.Nmea
/// <summary>
/// Elevation in degrees, 90 maximum
/// </summary>
public double Elevation { get; }
public double Elevation { get; } = double.NaN;
/// <summary>
/// Azimuth, degrees from true north, 000 to 359
/// </summary>
public double Azimuth { get; }
public double Azimuth { get; } = double.NaN;
/// <summary>
/// Signal-to-Noise ratio, 0-99 dB (-1 when not tracking)
/// </summary>
public int SignalToNoiseRatio { get; }
public int SignalToNoiseRatio { get; } = -1;
/// <summary>
/// Satellite system

20
src/UnitTests/NmeaParser.Tests/NmeaMessages.cs
View file

@ -343,6 +343,26 @@ namespace NmeaParser.Tests
Assert.AreEqual(0, gsv.SVs.Count);
}
[TestMethod]
[WorkItem(53)]
public void TestGpgsv_MissingElevationAndAzimuth()
{
string msgstr = "$GPGSV,3,1,12,02,06,225,16,04,,,40,05,65,251,27,07,40,057,43,0*51";
var msg = NmeaMessage.Parse(msgstr);
Assert.IsInstanceOfType(msg, typeof(Gsv));
Gsv gsv = (Gsv)msg;
Assert.AreEqual(3, gsv.TotalMessages);
Assert.AreEqual(1, gsv.MessageNumber);
Assert.AreEqual(12, gsv.SVsInView);
Assert.IsNotNull(gsv.SVs);
Assert.AreEqual(4, gsv.SVs.Count);
Assert.AreEqual(4, gsv.SVs[1].PrnNumber);
Assert.IsTrue(double.IsNaN(gsv.SVs[1].Elevation));
Assert.IsTrue(double.IsNaN(gsv.SVs[1].Azimuth));
Assert.AreEqual(40, gsv.SVs[1].SignalToNoiseRatio);
}
[TestMethod]
public void TestGpgll()
{