public void Value_Returns1_AtHalfDutyCyclePhase_ForDutyCycleGreaterThan0()
{
double[] dutyCycles = { 0.5, 1.0 };
foreach (double dutyCycle in dutyCycles)
{
TriangleWave tw = new TriangleWave(dutyCycle);
double phase = dutyCycle * Constants._2PI / 2.0;
double actual = tw.Value(phase);
double expected = 1.0;
if (actual != expected)
{
String message = "";
message += "Duty Cycle: " + dutyCycle;
message += "\nPhase: " + phase;
message += "\nExpected: " + expected;
message += "\nActual: " + actual;
Assert.AreEqual(expected, tw.Value(phase), message);
}
}
}
public void Value_ReturnsDouble()
{
double dutyCycle = 0.25;
double[] phases = { 0.0, 0.2, dutyCycle *Constants._2PI, 3.0, Constants._2PI };
TriangleWave tw = new TriangleWave(dutyCycle);
foreach (double phase in phases)
{
Assert.IsInstanceOfType(tw.Value(phase), typeof(double));
}
}
public void Value_Returns0_AtBothEndsOfPeriod()
{
double[] dutyCycles = { 0.0, 0.5, 1.0 };
double[] phases = { 0.0, 2 * Math.PI };
foreach (double dutyCycle in dutyCycles)
{
TriangleWave tw = new TriangleWave(dutyCycle);
foreach (double phase in phases)
{
double expected = 0.0;
double actual = tw.Value(phase);
if (actual != expected)
{
String message = "";
message += "Duty Cycle: " + dutyCycle;
message += "\nPhase: " + phase;
message += "\nExpected: " + expected;
message += "\nActual: " + actual;
Assert.AreEqual(0.0, tw.Value(phase), message);
}
}
}
}
public void Value_ReturnsKnownValues_ForKnownPhases()
{
double dutyCycle = 0.32;
double[] phases = { 0.0, 0.08 * Constants._2PI, 0.24 * Constants._2PI, 0.32 * Constants._2PI, 0.99 * Constants._2PI, Constants._2PI };
double[] expectedValues = { 0.0, 0.5, 0.5, 0.0, 0.0, 0.0 };
TriangleWave tw = new TriangleWave(dutyCycle);
Assert.AreEqual(phases.Length, expectedValues.Length, "Known inputs and results test sets do not contain the same number of values.");
for (int count = 0; count < phases.Length; count++)
{
double phase = phases[count];
double actual = tw.Value(phase);
double expected = expectedValues[count];
string message = string.Format("Phase: {0}\nExpected: {1}\nActual:{2}", phase, expected, actual);
Assert.AreEqual(actual, expected, message);
}
}