public void IndexOf()
{
using (var arr = new SwiftArray <ulong> (9, 8, 7, 6, 5, 4, 3, 2, 1)) {
Assert.AreEqual(2, arr.IndexOf(7), "IndexOf 1");
Assert.AreEqual(-1, arr.IndexOf(10), "IndexOf 2");
arr.Dispose();
Assert.Throws <ObjectDisposedException> (() => arr.IndexOf(5), "IndexOf 4");
}
}