public void WriteDxbTest() { // write file var file = new DxfFile(); file.Entities.Add(new DxfLine(new DxfPoint(1, 2, 3), new DxfPoint(4, 5, 6))); var stream = new MemoryStream(); file.SaveDxb(stream); stream.Seek(0, SeekOrigin.Begin); // read it back in var dxb = DxfFile.Load(stream); var line = (DxfLine)dxb.Entities.Single(); Assert.Equal(new DxfPoint(1, 2, 3), line.P1); Assert.Equal(new DxfPoint(4, 5, 6), line.P2); }