public void PeekDoesNotAdvanceStreamPosition()
{
var str = "Hello World!";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
Assert.Equal(0, bs.Position);
Assert.Equal('H', bs.Peek());
Assert.Equal(0, bs.Position);
Assert.Equal('H', bs.Peek());
Assert.Equal(0, bs.Position);
}
}
public void PeekUnnaffectedByReadPrevious()
{
var str = "abcdefghijkl";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
bs.Read(0);
Assert.Equal('a', bs.Peek());
bs.ReadPrevious();
Assert.Equal('a', bs.Peek());
bs.Read(1);
Assert.Equal('b', bs.Peek());
bs.ReadPrevious();
Assert.Equal('b', bs.Peek());
}
}
public void PeekAreChangedAfterReadSingleByte()
{
var str = "abcdefghijkl";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
byte[] bytes;
Assert.Equal('a', bs.Peek());
bytes = bs.Read(1);
Assert.Equal('a', (char)bytes[0]);
Assert.Equal('b', bs.Peek());
bytes = bs.Read(1);
Assert.Equal('b', (char)bytes[0]);
Assert.Equal('c', bs.Peek());
}
}
public void PeekAndReadEqual()
{
var str = "Hello World!";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
Assert.Equal('H', bs.Peek());
Assert.Equal('H', bs.Read());
}
}
public void PeekAtEndOfStreamThenReadBytes()
{
var str = "abcdefghijkl";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
bs.Read(12);
Assert.Equal(-1, bs.Peek());
Assert.Equal(0, bs.Read(4).Length);
}
}
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.Equal('H', bs.ReadPrevious());
Assert.Equal('e', bs.Peek());
Assert.Equal('H', bs.ReadPrevious());
}
}
public void PeekAreChangedAfterRead()
{
var str = "abcdefghijkl";
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(str)))
using (var bs = new BencodeStream(ms))
{
Assert.Equal('a', bs.Peek());
Assert.Equal('a', bs.Read());
Assert.Equal('b', bs.Peek());
Assert.Equal('b', bs.Read());
Assert.Equal('c', bs.Peek());
Assert.Equal('c', bs.Read());
Assert.Equal('d', bs.Peek());
Assert.Equal('d', bs.Read());
Assert.Equal('e', bs.Peek());
Assert.Equal('e', bs.Read());
}
}
