public void Base64_ToB64Url_Test()
{
var rnd = new CryptoRandom();
Parallel.For(1, 5000, i =>
{
var byteArray = rnd.NextBytes(i);
var offset = 0;
var count = Math.Max(i, i - rnd.Next(10));
var byteSegment = new ArraySegment<byte>(byteArray, offset, count);
var b64url = byteSegment.ToB64Url();
var b64 = byteSegment.ToB64();
Assert.IsTrue(b64url + b64[b64.Length - 1] == b64);
Assert.IsTrue(Enumerable.SequenceEqual(byteSegment, b64url.FromB64Url()));
});
}// Base64_ToB64Url_Test()