public void TestCreateBlockIfNeeded()
{
NPOIFSFileSystem fs = new NPOIFSFileSystem(_inst.OpenResourceAsStream("BlockSize512.zvi"));
NPOIFSMiniStore ministore = fs.GetMiniStore();
// 178 -> 179 -> 180, 181+ is free
Assert.AreEqual(179, ministore.GetNextBlock(178));
Assert.AreEqual(180, ministore.GetNextBlock(179));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, ministore.GetNextBlock(180));
for (int i = 181; i < 256; i++)
{
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(i));
}
// However, the ministore data only covers blocks to 183
for (int i = 0; i <= 183; i++)
{
ministore.GetBlockAt(i);
}
try
{
ministore.GetBlockAt(184);
Assert.Fail("No block at 184");
}
catch (IndexOutOfRangeException) { }
// The ministore itself is made up of 23 big blocks
IEnumerator<ByteBuffer> it = new NPOIFSStream(fs, fs.Root.Property.StartBlock).GetBlockIterator();
int count = 0;
while (it.MoveNext())
{
count++;
//it.MoveNext();
}
Assert.AreEqual(23, count);
// Ask it to get block 184 with creating, it will do
ministore.CreateBlockIfNeeded(184);
// The ministore should be one big block bigger now
it = new NPOIFSStream(fs, fs.Root.Property.StartBlock).GetBlockIterator();
count = 0;
while (it.MoveNext())
{
count++;
//it.MoveNext();
}
Assert.AreEqual(24, count);
// The mini block block counts now run to 191
for (int i = 0; i <= 191; i++)
{
ministore.GetBlockAt(i);
}
try
{
ministore.GetBlockAt(192);
Assert.Fail("No block at 192");
}
catch (IndexOutOfRangeException) { }
// Now try writing through to 192, check that the SBAT and blocks are there
byte[] data = new byte[15 * 64];
NPOIFSStream stream = new NPOIFSStream(ministore, 178);
stream.UpdateContents(data);
// Check now
Assert.AreEqual(179, ministore.GetNextBlock(178));
Assert.AreEqual(180, ministore.GetNextBlock(179));
Assert.AreEqual(181, ministore.GetNextBlock(180));
Assert.AreEqual(182, ministore.GetNextBlock(181));
Assert.AreEqual(183, ministore.GetNextBlock(182));
Assert.AreEqual(184, ministore.GetNextBlock(183));
Assert.AreEqual(185, ministore.GetNextBlock(184));
Assert.AreEqual(186, ministore.GetNextBlock(185));
Assert.AreEqual(187, ministore.GetNextBlock(186));
Assert.AreEqual(188, ministore.GetNextBlock(187));
Assert.AreEqual(189, ministore.GetNextBlock(188));
Assert.AreEqual(190, ministore.GetNextBlock(189));
Assert.AreEqual(191, ministore.GetNextBlock(190));
Assert.AreEqual(192, ministore.GetNextBlock(191));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, ministore.GetNextBlock(192));
for (int i = 193; i < 256; i++)
{
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(i));
}
fs.Close();
}
public void TestCreateBlockIfNeeded()
{
NPOIFSFileSystem fs = new NPOIFSFileSystem(_inst.OpenResourceAsStream("BlockSize512.zvi"));
NPOIFSMiniStore ministore = fs.GetMiniStore();
// 178 -> 179 -> 180, 181+ is free
Assert.AreEqual(179, ministore.GetNextBlock(178));
Assert.AreEqual(180, ministore.GetNextBlock(179));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, ministore.GetNextBlock(180));
for (int i = 181; i < 256; i++)
{
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(i));
}
// However, the ministore data only covers blocks to 183
for (int i = 0; i <= 183; i++)
{
ministore.GetBlockAt(i);
}
try
{
ministore.GetBlockAt(184);
Assert.Fail("No block at 184");
}
catch (IndexOutOfRangeException) { }
// The ministore itself is made up of 23 big blocks
IEnumerator <ByteBuffer> it = new NPOIFSStream(fs, fs.Root.Property.StartBlock).GetBlockIterator();
int count = 0;
while (it.MoveNext())
{
count++;
//it.MoveNext();
}
Assert.AreEqual(23, count);
// Ask it to get block 184 with creating, it will do
ministore.CreateBlockIfNeeded(184);
// The ministore should be one big block bigger now
it = new NPOIFSStream(fs, fs.Root.Property.StartBlock).GetBlockIterator();
count = 0;
while (it.MoveNext())
{
count++;
//it.MoveNext();
}
Assert.AreEqual(24, count);
// The mini block block counts now run to 191
for (int i = 0; i <= 191; i++)
{
ministore.GetBlockAt(i);
}
try
{
ministore.GetBlockAt(192);
Assert.Fail("No block at 192");
}
catch (IndexOutOfRangeException) { }
// Now try writing through to 192, check that the SBAT and blocks are there
byte[] data = new byte[15 * 64];
NPOIFSStream stream = new NPOIFSStream(ministore, 178);
stream.UpdateContents(data);
// Check now
Assert.AreEqual(179, ministore.GetNextBlock(178));
Assert.AreEqual(180, ministore.GetNextBlock(179));
Assert.AreEqual(181, ministore.GetNextBlock(180));
Assert.AreEqual(182, ministore.GetNextBlock(181));
Assert.AreEqual(183, ministore.GetNextBlock(182));
Assert.AreEqual(184, ministore.GetNextBlock(183));
Assert.AreEqual(185, ministore.GetNextBlock(184));
Assert.AreEqual(186, ministore.GetNextBlock(185));
Assert.AreEqual(187, ministore.GetNextBlock(186));
Assert.AreEqual(188, ministore.GetNextBlock(187));
Assert.AreEqual(189, ministore.GetNextBlock(188));
Assert.AreEqual(190, ministore.GetNextBlock(189));
Assert.AreEqual(191, ministore.GetNextBlock(190));
Assert.AreEqual(192, ministore.GetNextBlock(191));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, ministore.GetNextBlock(192));
for (int i = 193; i < 256; i++)
{
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, ministore.GetNextBlock(i));
}
fs.Close();
}
