public void TestSingle()
{
var value = new[] { 0 };
var enumerable = new AggregateEnumerable <int>(value);
Assert.AreEqual(1, enumerable.Count());
Assert.AreEqual(0, enumerable.ToArray()[0]);
}
public void TestMultiple()
{
var value = new[] { 0 };
var empty = Array.Empty <int>();
var set = new HashSet <int>(new [] { 1, 2 });
var enumerable = new AggregateEnumerable <int>(value, empty, set);
Assert.AreEqual(3, enumerable.Count());
var values = enumerable.ToArray();
Assert.AreEqual(0, values[0]);
Assert.AreEqual(1, values[1]);
Assert.AreEqual(2, values[2]);
}