public void DmmMeasurementRange_ExtraMax()
{
var r = new DmmMeasurementRange("Test", 0, 100, DmmMeasurementType.Unknown);
Assert.AreEqual(0, r.MinimumExponent);
Assert.AreEqual(9, r.MaximumExponent);
}
public void DmmMeasurementRange_UndefinedRange()
{
var r = new DmmMeasurementRange(DmmMeasurementType.VoltageDC);
Assert.AreEqual(-9, r.MinimumExponent);
Assert.AreEqual(9, r.MaximumExponent);
}
public void DmmMeasurementRange_Basic()
{
var r = new DmmMeasurementRange("Test", -3, 3, DmmMeasurementType.VoltageDC);
Assert.AreEqual("Test", r.Title);
Assert.AreEqual(-3, r.MinimumExponent);
Assert.AreEqual(3, r.MaximumExponent);
Assert.AreEqual(DmmMeasurementType.VoltageDC, r.MeasurementType);
}
public void DmmMeasurementRange_SlightlyOver2()
{
var r = new DmmMeasurementRange("Test", 2, 4, DmmMeasurementType.VoltageDC);
Assert.AreEqual("Test", r.Title);
Assert.AreEqual(3, r.MinimumExponent);
Assert.AreEqual(6, r.MaximumExponent);
Assert.AreEqual(DmmMeasurementType.VoltageDC, r.MeasurementType);
}
public void DmmMeasurement_RangeMilliToNone_Below()
{
var r = new DmmMeasurementRange("Current", -3, 3, DmmMeasurementType.CurrentDC);
var m = new DmmMeasurement(0.0001M, r);
Assert.AreEqual(0.1M, m.Value.Coefficient);
Assert.AreEqual(-3, m.Value.Exponent);
Assert.AreEqual("m", m.Value.SIPrefix);
Assert.AreEqual("mA", m.SIUnit);
}
public void DmmMeasurement_RangeMilliToNone_Above()
{
var r = new DmmMeasurementRange("Current", -3, 0, DmmMeasurementType.CurrentDC);
var m = new DmmMeasurement(1000, r);
Assert.AreEqual(1000, m.Value.Coefficient);
Assert.AreEqual(0, m.Value.Exponent);
Assert.AreEqual("", m.Value.SIPrefix);
Assert.AreEqual("A", m.SIUnit);
}
private DmmMeasurement GetNextMeasurement()
{
var bytes = new byte[5];
if (this.Readings.IsEmpty || (Rnd.Next(100) == 0))
{
switch (Rnd.Next(9))
{
case 0: this.Range = new DmmMeasurementRange(DmmMeasurementType.VoltageDC); break;
case 1: this.Range = new DmmMeasurementRange(DmmMeasurementType.VoltageAC, "~"); break;
case 2: this.Range = new DmmMeasurementRange(DmmMeasurementType.Resistance); break;
case 3: this.Range = new DmmMeasurementRange(DmmMeasurementType.Diode); break;
case 4: this.Range = new DmmMeasurementRange(DmmMeasurementType.Capacitance); break;
case 5: this.Range = new DmmMeasurementRange(DmmMeasurementType.CurrentDC); break;
case 6: this.Range = new DmmMeasurementRange(DmmMeasurementType.CurrentAC, "~"); break;
case 7: this.Range = new DmmMeasurementRange(DmmMeasurementType.Frequency); break;
default: this.Range = new DmmMeasurementRange(DmmMeasurementType.Unknown, "?"); break;
}
this.Readings.Clear();
var newValue = Rnd.Next(-9, 10) * Math.Pow(10, Rnd.Next(-8, 9));
this.Readings.Add(newValue);
}
else
{
var currValue = this.Readings.Average;
var newDelta = Rnd.Next(-200, 201) / 100.0;
var newRange = (currValue != 0) ? Math.Pow(10, Math.Truncate((Math.Log10(Math.Abs(currValue))))) : 1;
if (newRange < 1)
{
newRange /= 10;
}
var newValue = currValue + newDelta * newRange * 0.1;
this.Readings.Add(newValue);
}
return(new DmmMeasurement(Convert.ToDecimal(this.Readings.Average), this.Range));
}
public void DmmMeasurementRange_MinLargerThanMax()
{
var r = new DmmMeasurementRange("Test", 1, 0, DmmMeasurementType.Unknown);
}
