public void TestUlid()
{
// just create
var anything = Ulid.Create();
Assert.IsTrue(anything.ToString() != null);
// from timestamp
var dto = DateTimeOffset.FromUnixTimeMilliseconds(1484581420);
var ulid = Ulid.Create(dto);
Assert.IsTrue(ulid.ToString().StartsWith("0001C7STHC"));
// string roundtrip
var str = anything.ToString();
var rev = Ulid.Parse(str);
Assert.IsTrue(str == rev.ToString());
// bytes roundtrip
var bytes = new byte[16];
anything.AsBytes(bytes);
var fromBytes = new Ulid(bytes);
Assert.IsTrue(anything.Equals(fromBytes));
Assert.IsTrue(anything.ToString() == fromBytes.ToString());
// test operators
var one = new Ulid(100UL, 200UL);
var two = new Ulid(42UL, 43UL);
var three = new Ulid(42UL, 43UL);
Assert.IsTrue(one != two);
Assert.IsTrue(two == three);
}