private static void FuzzIteration(int seed)
{
var xyAxiseries = new TestAxisSeries();
var N = 15;
var random = new Random(seed);
var testData = new System.Collections.Generic.List <double>();
var currentValue = random.NextDouble() - 0.5;
for (int i = 0; i < N; ++i)
{
testData.Add(currentValue);
currentValue += random.NextDouble();
}
var targetX = random.NextDouble() * (N / 2.0) - 1.0;
var guess = random.Next(0, testData.Count);
int foundIndex = xyAxiseries.FindWindowStartIndex(testData, x => x, targetX, guess);
if (foundIndex > 0)
{
Assert.LessOrEqual(testData[foundIndex], targetX, "At " + seed);
}
if (foundIndex < testData.Count - 1)
{
Assert.GreaterOrEqual(testData[foundIndex + 1], targetX, "At " + seed);
}
}
private static void FuzzIterationWithNan(int seed)
{
var xyAxiseries = new TestAxisSeries();
var N = 15;
var random = new Random(seed);
var testData = new System.Collections.Generic.List <double>();
var currentValue = random.NextDouble() - 0.5;
for (int i = 0; i < N; ++i)
{
if (random.Next(4) == 0)
{
testData.Add(double.NaN);
}
testData.Add(currentValue);
currentValue += random.NextDouble();
}
double?PrevNonNan(int index)
{
while (index >= 0)
{
if (double.IsNaN(testData[index]) == false)
{
return(testData[index]);
}
index -= 1;
}
return(null);
}
double?NextNonNan(int index)
{
while (index >= 0)
{
if (double.IsNaN(testData[index]) == false)
{
return(testData[index]);
}
index += 1;
}
return(null);
}
var targetX = random.NextDouble() * (N / 2.0) - 1.0;
var guess = random.Next(0, testData.Count);
int foundIndex = xyAxiseries.FindWindowStartIndex(testData, x => x, targetX, guess);
if (foundIndex > 0)
{
if (double.IsNaN(testData[foundIndex]))
{
var prevNonNaN = PrevNonNan(foundIndex - 1);
if (prevNonNaN.HasValue)
{
Assert.LessOrEqual(prevNonNaN, targetX, "At " + seed);
}
}
else
{
Assert.LessOrEqual(testData[foundIndex], targetX, "At " + seed);
}
}
if (foundIndex < testData.Count - 1)
{
if (double.IsNaN(testData[foundIndex + 1]))
{
var nextNonNaN = NextNonNan(foundIndex + 1);
if (nextNonNaN.HasValue)
{
Assert.GreaterOrEqual(nextNonNaN, targetX, "At " + seed);
}
}
else
{
Assert.GreaterOrEqual(testData[foundIndex + 1], targetX, "At " + seed);
}
}
}
