private void WriteData(long sampleSize, double dataPerSecond, TimeSpan duration, double?maxSamplesToKeepPerSecond, Action <Datum, double, DataRateCalculator.SamplingAction> calculatedDataRateKeepCallback)
{
DataRateCalculator dataRateCalculator = new DataRateCalculator(sampleSize, maxSamplesToKeepPerSecond);
long numData = (long)(dataPerSecond * duration.TotalSeconds);
double interDataTime = duration.TotalSeconds / numData;
DateTimeOffset startTimestamp = DateTimeOffset.UtcNow;
dataRateCalculator.Start(startTimestamp);
for (long i = 0; i < numData; ++i)
{
DateTimeOffset simulatedCurrentTime = startTimestamp.AddSeconds((i + 1) * interDataTime);
AccelerometerDatum datum = new AccelerometerDatum(simulatedCurrentTime, 1, 1, 1);
DataRateCalculator.SamplingAction samplingAction = dataRateCalculator.Add(datum);
double?calculatedDataPerSecond = dataRateCalculator.GetDataPerSecond();
if (i < sampleSize - 1)
{
Assert.IsNull(calculatedDataPerSecond);
}
else
{
Assert.NotNull(calculatedDataPerSecond);
calculatedDataRateKeepCallback?.Invoke(datum, calculatedDataPerSecond.Value, samplingAction);
}
}
}
private List <Datum> GenerateData()
{
List <Datum> data = new List <Datum>();
Random r = new Random();
for (int i = 0; i < 1000; ++i)
{
Datum d;
int type = r.Next(0, 3);
if (type == 0)
{
d = new AccelerometerDatum(DateTimeOffset.UtcNow, r.NextDouble(), r.NextDouble(), r.NextDouble());
}
else if (type == 1)
{
d = new LocationDatum(DateTimeOffset.UtcNow, r.NextDouble(), r.NextDouble(), r.NextDouble());
}
else
{
d = new BatteryDatum(DateTimeOffset.UtcNow, r.NextDouble());
}
data.Add(d);
}
return(data);
}
public void ImmediateDataTest()
{
InitServiceHelper();
DataRateCalculator calculator = new DataRateCalculator(10, 1);
AccelerometerDatum datum = new AccelerometerDatum(DateTimeOffset.UtcNow, 1, 1, 1);
calculator.Start(datum.Timestamp);
for (int i = 0; i < calculator.SampleSize * 2; ++i)
{
DataRateCalculator.SamplingAction action = calculator.Add(datum);
if (i < calculator.SampleSize)
{
Assert.AreEqual(action, DataRateCalculator.SamplingAction.Keep);
}
else
{
Assert.AreEqual(action, DataRateCalculator.SamplingAction.Drop);
}
}
}
