public void TestGetFreeBlockWithSpare()
{
NPOIFSFileSystem fs = new NPOIFSFileSystem(_inst.GetFile("BlockSize512.zvi"));
NPOIFSMiniStore ministore = fs.GetMiniStore();
// Our 2nd SBAT block has spares
Assert.AreEqual(false, ministore.GetBATBlockAndIndex(0).Block.HasFreeSectors);
Assert.AreEqual(true, ministore.GetBATBlockAndIndex(128).Block.HasFreeSectors);
// First free one at 181
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(181));
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(182));
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(183));
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(184));
// Ask, will get 181
Assert.AreEqual(181, ministore.GetFreeBlock());
// Ask again, will still get 181 as not written to
Assert.AreEqual(181, ministore.GetFreeBlock());
// Allocate it, then ask again
ministore.SetNextBlock(181, POIFSConstants.END_OF_CHAIN);
Assert.AreEqual(182, ministore.GetFreeBlock());
fs.Close();
}
public void TestGetFreeBlockWithNonSpare()
{
NPOIFSFileSystem fs = new NPOIFSFileSystem(_inst.OpenResourceAsStream("BlockSize512.zvi"));
NPOIFSMiniStore ministore = fs.GetMiniStore();
// We've spare ones from 181 to 255
for (int i = 181; i < 256; i++)
{
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(i));
}
// Check our SBAT free stuff is correct
Assert.AreEqual(false, ministore.GetBATBlockAndIndex(0).Block.HasFreeSectors);
Assert.AreEqual(true, ministore.GetBATBlockAndIndex(128).Block.HasFreeSectors);
// Allocate all the spare ones
for (int i = 181; i < 256; i++)
{
ministore.SetNextBlock(i, POIFSConstants.END_OF_CHAIN);
}
// SBAT are now full, but there's only the two
Assert.AreEqual(false, ministore.GetBATBlockAndIndex(0).Block.HasFreeSectors);
Assert.AreEqual(false, ministore.GetBATBlockAndIndex(128).Block.HasFreeSectors);
try
{
Assert.AreEqual(false, ministore.GetBATBlockAndIndex(256).Block.HasFreeSectors);
Assert.Fail("Should only be two SBATs");
}
catch (ArgumentOutOfRangeException) { }
// Now ask for a free one, will need to extend the SBAT chain
Assert.AreEqual(256, ministore.GetFreeBlock());
Assert.AreEqual(false, ministore.GetBATBlockAndIndex(0).Block.HasFreeSectors);
Assert.AreEqual(false, ministore.GetBATBlockAndIndex(128).Block.HasFreeSectors);
Assert.AreEqual(true, ministore.GetBATBlockAndIndex(256).Block.HasFreeSectors);
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, ministore.GetNextBlock(254)); // 2nd SBAT
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, ministore.GetNextBlock(255)); // 2nd SBAT
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(256)); // 3rd SBAT
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(257)); // 3rd SBAT
fs.Close();
}
public void TestMultiBlockStream()
{
byte[] data1B = new byte[63];
byte[] data2B = new byte[64 + 14];
for (int i = 0; i < data1B.Length; i++)
{
data1B[i] = (byte)(i + 2);
}
for (int i = 0; i < data2B.Length; i++)
{
data2B[i] = (byte)(i + 4);
}
// New filesystem and store to use
NPOIFSFileSystem fs = new NPOIFSFileSystem();
NPOIFSMiniStore ministore = fs.GetMiniStore();
// Initially has Properties + BAT but nothing else
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, fs.GetNextBlock(0));
Assert.AreEqual(POIFSConstants.FAT_SECTOR_BLOCK, fs.GetNextBlock(1));
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, fs.GetNextBlock(2));
// Store the 2 block one, should use 2 mini blocks, and request
// the use of 2 big blocks
ministore = fs.GetMiniStore();
fs.Root.CreateDocument("mini2", new ByteArrayInputStream(data2B));
// Check
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, fs.GetNextBlock(0));
Assert.AreEqual(POIFSConstants.FAT_SECTOR_BLOCK, fs.GetNextBlock(1));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, fs.GetNextBlock(2)); // SBAT
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, fs.GetNextBlock(3)); // Mini
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, fs.GetNextBlock(4));
// First 2 Mini blocks will be used
Assert.AreEqual(2, ministore.GetFreeBlock());
// Add one more mini-stream, and check
fs.Root.CreateDocument("mini1", new ByteArrayInputStream(data1B));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, fs.GetNextBlock(0));
Assert.AreEqual(POIFSConstants.FAT_SECTOR_BLOCK, fs.GetNextBlock(1));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, fs.GetNextBlock(2)); // SBAT
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, fs.GetNextBlock(3)); // Mini
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, fs.GetNextBlock(4));
// One more mini-block will be used
Assert.AreEqual(3, ministore.GetFreeBlock());
// Check the contents too
byte[] r1 = new byte[data1B.Length];
DocumentInputStream dis = fs.CreateDocumentInputStream("mini1");
IOUtils.ReadFully(dis, r1);
dis.Close();
CollectionAssert.AreEqual(data1B, r1);
byte[] r2 = new byte[data2B.Length];
dis = fs.CreateDocumentInputStream("mini2");
IOUtils.ReadFully(dis, r2);
dis.Close();
CollectionAssert.AreEqual(data2B, r2);
fs.Close();
}