public void TestConstructInvalid()
{
Assert.Throws <ArgumentException>(
() => _ = GetSampler(12, 7));
Assert.Throws <ArgumentNullException>(
() => _ = new UniformIntSampler(null, 1, 2));
}
public void IntegrateCdf(int min, int max)
{
const int trials = 1000000;
const double error = 0.0005;
var sampler = new UniformIntSampler(new ReducedThreeFry4X64(1), min, max);
for (var x = min; x <= max; ++x)
{
var expected = (double)(x - min + 1) / (max - min + 1);
var success = 0;
for (var i = 0; i < trials; ++i)
{
if (sampler.GetNext() <= x)
{
++success;
}
}
var actual = (double)success / trials;
Assert.AreEqual(expected, actual, error);
}
}
