public void NPOIFSReadCopyWritePOIFSRead()
{
FileStream testFile = POIDataSamples.GetSpreadSheetInstance().GetFile("Simple.xls");
NPOIFSFileSystem src = new NPOIFSFileSystem(testFile);
byte[] wbDataExp = IOUtils.ToByteArray(src.CreateDocumentInputStream("Workbook"));
NPOIFSFileSystem nfs = new NPOIFSFileSystem();
EntryUtils.CopyNodes(src.Root, nfs.Root);
src.Close();
MemoryStream bos = new MemoryStream();
nfs.WriteFileSystem(bos);
nfs.Close();
POIFSFileSystem pfs = new POIFSFileSystem(new MemoryStream(bos.ToArray()));
byte[] wbDataAct = IOUtils.ToByteArray(pfs.CreateDocumentInputStream("Workbook"));
Assert.That(wbDataExp, new EqualConstraint(wbDataAct));
}