public void CastTo()
{
ArrayList fruits = new ArrayList
{
"mango",
"apple",
"lemon"
};
ArrayList expected = new ArrayList
{
"apple",
"lemon",
"mango"
};
IEnumerable <string> query =
Enumerable.CastTo <string>(fruits).SortBy(fruit => fruit);
Assert.AreEqual(expected, query);
}