private void Validate_IntersectWith(PooledSet <T> set, Span <T> span)
{
if (set.Count == 0 || span.Length == 0)
{
set.IntersectWith(span);
Assert.Equal(0, set.Count);
}
else
{
IEqualityComparer <T> comparer = set.Comparer;
PooledSet <T> expected = new PooledSet <T>(comparer);
RegisterForDispose(expected);
foreach (T value in set)
{
if (SpanContains(span, value, comparer))
{
expected.Add(value);
}
}
set.IntersectWith(span);
Assert.Equal(expected.Count, set.Count);
Assert.True(expected.SetEquals(set));
}
}