public void TestCardinality()
{
var strategy = new ProportionSubsetSelectionStrategy(0.1, RandomDefaults.CreateRandomSource());
for (int i = 0; i < 100; i++)
{
int[] idxArr = strategy.SelectSubset(i);
int expectedCardinalityMin = (int)Math.Floor(i * 0.1);
int expectedCardinalityMax = (int)Math.Ceiling(i * 0.1);
Assert.IsTrue(idxArr.Length >= expectedCardinalityMin && idxArr.Length <= expectedCardinalityMax);
}
}
public void TestUniqueness()
{
var strategy = new ProportionSubsetSelectionStrategy(0.66, RandomDefaults.CreateRandomSource());
for (int i = 0; i < 20; i++)
{
int[] idxArr = strategy.SelectSubset(50);
HashSet <int> idxSet = new HashSet <int>();
for (int j = 0; j < idxArr.Length; j++)
{
int val = idxArr[j];
Assert.IsFalse(idxSet.Contains(val));
idxSet.Add(val);
}
}
}
public void SelectSubset_Uniqueness()
{
IRandomSource rng = RandomDefaults.CreateRandomSource();
var strategy = new ProportionSubsetSelectionStrategy(0.66);
for (int i = 0; i < 20; i++)
{
int[] idxArr = strategy.SelectSubset(50, rng);
HashSet <int> idxSet = new();
for (int j = 0; j < idxArr.Length; j++)
{
int val = idxArr[j];
Assert.DoesNotContain(val, idxSet);
idxSet.Add(val);
}
}
}
