public void AndThereAreNoMatches_ThenTheSubsetIsEmpty()
{
var list = new RandomSubSet<int>(Enumerable.Range(1, 10).ToList());
Assert.That(list.MoveRandom(x => x % 20 == 0, 10),
Is.False);
var subset = list.GetFilteredItems().ToList();
Assert.That(subset.Count,
Is.EqualTo(0));
}
public void IGetASubsetMatchingMyCountAndCriteria()
{
var list = new RandomSubSet<int>(Enumerable.Range(1, 100).ToList());
Assert.That(list.MoveRandom(x => x%2 == 0, 10),
Is.True);
var subset = list.GetFilteredItems().ToList();
Assert.That(subset.Count,
Is.EqualTo(10));
Assert.That(subset.All(x => x%2 == 0),
Is.True);
}
public void AndThereAreFewerItemsAvailable_IGetASmallerSubsetThanMyRequestedCount()
{
var list = new RandomSubSet<int>(Enumerable.Range(1, 100).ToList());
Assert.That(list.MoveRandom(x => x % 20 == 0, 10),
Is.True);
var subset = list.GetFilteredItems().ToList();
Assert.That(subset.Count,
Is.EqualTo(5));
Assert.That(subset.All(x => x % 20 == 0),
Is.True);
}