public void TestCacheWorks()
{
var init = new int[] { 2, 3, 4, 5 };
var t = new RedBlackSetTester<int>(init);
Assert.That(t.Cache, Is.EqualTo(init));
Assert.That(t.Remove(4), Is.True);
var remove = init.Where(i => i != 4);
Assert.That(t.Add(2), Is.False);
Assert.That(t.Cache, Is.EquivalentTo(remove));
Assert.That(t.Add(7), Is.True);
var add = remove.Concat(Enumerable.Repeat(7, 1));
Assert.That(t.Cache, Is.EquivalentTo(add));
t.Clear();
Assert.That(t.Cache, Is.Empty);
}
public void TestSymmetricExceptWith()
{
var a = new RedBlackSetTester<int>(_odd.Where(UpTo100));
Assert.That(() => a.SymmetricExceptWith(null), Throws.InstanceOf<ArgumentNullException>());
a.SymmetricExceptWith(_even.Where(UpTo100));
Assert.That(a.SetEquals(_numbers));
a.Clear();
a.AddRange(_primes);
a.SymmetricExceptWith(_odd.Where(UpTo100).Concat(Enumerable.Repeat(2, 2)));
Assert.That(a.Contains(_primes.First()), Is.False);
Assert.That(_primes.Skip(1).All(p => !a.Contains(p)));
}
