public void String_Returning_FromBase64_Detects_Encoding_From_ByteMark_When_Null_Encoding_Is_Given(string enc)
{
using (var buff = new MemoryStream())
{
var encIns = Encoding.GetEncoding(enc.TrimSafeOrDefault("utf-8"));
var dataArr = encIns.GetPreamble();
buff.Write(dataArr, 0, dataArr.Length);
dataArr = encIns.GetBytes(TestValues.BigString);
buff.Write(dataArr, 0, dataArr.Length);
var extB64 = new ArraySegment <byte>(buff.GetBuffer(), 0, (int)buff.Length).ToBase64();
var resultStr = extB64.FromBase64(null);
Assert.True(TestValues.BigString.Equals(resultStr));
}
}