public void CreateReturnsEmptyWhen(double min, double max, double frequency, TickSnap tickSnap, double[] expected)
{
CollectionAssert.IsEmpty(Ticks.Create(min, max, frequency, tickSnap));
}
internal static IEnumerable <double> Create(double minimum, double maximum, double tickFrequency, TickSnap tickSnap)
{
if (tickFrequency <= 0 ||
maximum <= minimum)
{
return(Enumerable.Empty <double>());
}
switch (tickSnap)
{
case TickSnap.TickFrequency:
{
var snappedMin = Math.Ceiling(minimum / tickFrequency) * tickFrequency;
return(Create(snappedMin, maximum, tickFrequency));
}
case TickSnap.Minimum:
{
return(Create(minimum, maximum, tickFrequency));
}
case TickSnap.Maximum:
{
var n = Math.Floor((maximum - minimum) / tickFrequency);
var snappedMin = maximum - (n * tickFrequency);
return(Create(snappedMin, maximum, tickFrequency));
}
default:
throw new ArgumentOutOfRangeException(nameof(tickSnap), tickSnap, null);
}
}
public void CreateTicks(double min, double max, double frequency, TickSnap tickSnap, double[] expected)
{
var ticks = Ticks.Create(min, max, frequency, tickSnap).ToArray();
CollectionAssert.AreEqual(expected, ticks, DoubleComparer.Default);
}
