public void ReadUnnaffectedByReadPrevious()
{
var str = "abcdefghijkl";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
Assert.AreEqual('a', bs.Read());
bs.ReadPrevious();
Assert.AreEqual('b', bs.Read());
}
}
public void ReadPreviousAtStartOfStream()
{
var str = "Hello World!";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
Assert.AreEqual(-1, bs.ReadPrevious());
}
}
public void ReadPreviousUnaffectedByPeek()
{
var str = "Hello World!";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
bs.Read(1);
Assert.AreEqual('H', bs.ReadPrevious());
Assert.AreEqual('e', bs.Peek());
Assert.AreEqual('H', bs.ReadPrevious());
}
}
public void ReadPrevious()
{
var str = "Hello World!";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
Assert.AreEqual(-1, bs.ReadPrevious());
Assert.AreEqual('H', bs.Read());
Assert.AreEqual('H', bs.ReadPrevious());
Assert.AreEqual('e', bs.Read());
Assert.AreEqual('e', bs.ReadPrevious());
bs.Position = 20;
Assert.AreEqual(-1, bs.ReadPrevious());
}
}
