public int[] CheckRemoveNonExistingElementFromSet(int[] array, int element)
{
var set = new GenericSet <int>(array);
Assert.That(set.Remove(element), Is.False);
return(set.ToArray());
}
public void RemoveWorksTest()
{
set.Add(1);
set.Remove(1);
Assert.AreEqual(0, set.Count);
}