POIDataSamples _samples = POIDataSamples.getPOIFSInstance();
InputStream inp = _samples.openResourceAsStream("BlockSize4096.zvi");
// First up, check that we can process the header properly
HeaderBlock header_block = new HeaderBlock(inp);
POIFSBigBlockSize bigBlockSize = header_block.getBigBlockSize();
assertEquals(4096, bigBlockSize.getBigBlockSize());
// Check the fat info looks sane
assertEquals(1, header_block.getBATArray().length);
assertEquals(1, header_block.getBATCount());
assertEquals(0, header_block.getXBATCount());