public void Uniform(int sides)
{
var die = new GamblersDie(sides);
int[] result = new int[sides];
decimal iters = 10_000_000M;
for (int i = 0; i < iters; i++)
{
result[die.Roll() - 1]++;
}
for (int i = 0; i < sides; i++)
{
decimal roll = (result[i] - iters / sides) / iters;
Assert.True(0.001M > roll, $"{roll} is outside of uniformity tolerance of 0.001");
}
}
public void NonUniform_Inferred()
{
// Given this state, [4,3,2,1]
// 1 should be rolled 40% of the time
// 2 should be rolled 30% of the time
// 3 should be rolled 20% of the time
// 4 should be rolled 10% of the time
decimal iters = 10_000_000M;
int[] result = new int[] { 0, 0, 0, 0 };
for (int run = 0; run < iters; run++)
{
var die = new GamblersDie(4, 3, 2, 1);
result[die.Roll() - 1]++;
}
Assert.True(Math.Abs(0.4M - result[0] / iters) < 0.001M, $"Side one is outside of uniformity tolerance: {Math.Abs(0.4M - result[0] / iters)}");
Assert.True(Math.Abs(0.3M - result[1] / iters) < 0.001M, $"Side two is outside of uniformity tolerance: {Math.Abs(0.3M - result[1] / iters)}");
Assert.True(Math.Abs(0.2M - result[2] / iters) < 0.001M, $"Side three is outside of uniformity tolerance: {Math.Abs(0.2M - result[2] / iters)}");
Assert.True(Math.Abs(0.1M - result[3] / iters) < 0.001M, $"Side four is outside of uniformity tolerance: {Math.Abs(0.1M - result[3] / iters)}");
}
