public void testWriteRead() throws IOException {
final SimulatedFSDataset fsdataset = getSimulatedFSDataset();
addSomeBlocks(fsdataset);
for (int i = 1; i <= NUMBLOCKS; ++i) {
ExtendedBlock b = new ExtendedBlock(bpid, i, 0, 0);
assertTrue(fsdataset.isValidBlock(b));
assertEquals(blockIdToLen(i), fsdataset.getLength(b));
checkBlockDataAndSize(fsdataset, b, blockIdToLen(i));
}
}
public void testInvalidate() throws IOException {
final SimulatedFSDataset fsdataset = getSimulatedFSDataset();
int bytesAdded = addSomeBlocks(fsdataset);
Block[] deleteBlocks = new Block[2];
deleteBlocks[0] = new Block(1, 0, 0);
deleteBlocks[1] = new Block(2, 0, 0);
fsdataset.invalidate(bpid, deleteBlocks);
checkInvalidBlock(new ExtendedBlock(bpid, deleteBlocks[0]));
checkInvalidBlock(new ExtendedBlock(bpid, deleteBlocks[1]));
long sizeDeleted = blockIdToLen(1) + blockIdToLen(2);
assertEquals(bytesAdded - sizeDeleted, fsdataset.getDfsUsed());
assertEquals(fsdataset.getCapacity() - bytesAdded + sizeDeleted, fsdataset.getRemaining());
// Now make sure the rest of the blocks are valid
for (int i = 3; i <= NUMBLOCKS; ++i) {
Block b = new Block(i, 0, 0);
assertTrue(fsdataset.isValidBlock(new ExtendedBlock(bpid, b)));
}
}
public void checkInvalidBlock(ExtendedBlock b) {
final SimulatedFSDataset fsdataset = getSimulatedFSDataset();
assertFalse(fsdataset.isValidBlock(b));
try {
fsdataset.getLength(b);
assertTrue("Expected an IO exception", false);
} catch (IOException e) {
// ok - as expected
}
try {
fsdataset.getBlockInputStream(b);
assertTrue("Expected an IO exception", false);
} catch (IOException e) {
// ok - as expected
}
try {
fsdataset.finalizeBlock(b);
assertTrue("Expected an IO exception", false);
} catch (IOException e) {
// ok - as expected
}
}
