public void GeneratesDc()
{
const int samplingRate = 10;
const double offset = 10, amplitude = 1;
var generator = new WaveGenerator(new WaveformDescription
{
Waveform = Waveform.Dc,
SamplingRate = samplingRate,
Amplitude = amplitude,
Offset = offset,
});
double[] samples = generator.Next(samplingRate);
Assert.AreEqual(samplingRate, samples.Length, "Expected one second of generated data.");
Assert.IsTrue(samples.All(x => Math.Abs(x - (offset + amplitude)) <= Double.Epsilon), "Samples must have expected value.");
}
public void GeneratesSine()
{
const int samplingRate = 10;
const double offset = 10, frequency = 1, amplitude = 1;
var generator = new WaveGenerator(new WaveformDescription
{
Waveform = Waveform.Sine,
SamplingRate = samplingRate,
Frequency = frequency,
Amplitude = amplitude,
Offset = offset,
Phase = 0,
});
double[] samples = generator.Next(samplingRate);
Assert.AreEqual(samplingRate, samples.Length, "Expected one second of generated data.");
Assert.AreEqual(offset, samples.Average(), "Mean value must be equal to offset.");
Assert.IsTrue(samples.All(x => x >= offset - amplitude && x <= offset + amplitude), "Samples must be within expected range.");
}
public void GeneratesImpulse()
{
const int samplingRate = 10;
const double offset = 10, amplitude = 1;
var generator = new WaveGenerator(new WaveformDescription
{
Waveform = Waveform.Impulse,
SamplingRate = samplingRate,
Amplitude = amplitude,
Offset = offset,
Phase = WaveformDescription.Phase180
});
double[] samples = generator.Next(samplingRate);
Assert.AreEqual(samplingRate, samples.Length, "Expected one second of generated data.");
for (int i = 0; i < samples.Length; ++i)
{
Assert.AreEqual(i == samplingRate / 2 ? amplitude + offset : offset, samples[i]);
}
}
