public void TestCopy02()
{
using (var stream = new MemoryStream(new byte[100]))
using (var reader = new EndianReader(stream))
using (var writer = new EndianWriter(stream))
{
writer.Fill(22, 50);
Assert.AreEqual(50, reader.BaseStream.Position);
writer.Fill(44, 50);
Assert.AreEqual(100, reader.BaseStream.Position);
reader.Seek(0, SeekOrigin.Begin);
var buffer = reader.ReadBytes(50);
Assert.IsTrue(buffer.All(b => b == 22));
buffer = reader.ReadBytes(50);
Assert.IsTrue(buffer.All(b => b == 44));
reader.Seek(0, SeekOrigin.Begin);
writer.Copy(60, 40, 40);
Assert.AreEqual(0, reader.BaseStream.Position); //must be preserved after copy
reader.Seek(0, SeekOrigin.Begin);
buffer = reader.ReadBytes(40);
Assert.IsTrue(buffer.All(b => b == 22));
buffer = reader.ReadBytes(40);
Assert.IsTrue(buffer.All(b => b == 44));
buffer = reader.ReadBytes(20);
Assert.IsTrue(buffer.All(b => b == 44));
}
}