// Tests that cancelling a block will remove the temporary file
@Test
public void cancelBlockTest() throws Exception {
mFileSystem.createFile(new AlluxioURI("/testFile"));
URIStatus file = mFileSystem.getStatus(new AlluxioURI("/testFile"));
final int blockSize = (int) WORKER_CAPACITY_BYTES / 2;
final long blockId = BlockId.createBlockId(BlockId.getContainerId(file.getFileId()), 0);
String filename =
mBlockWorkerServiceHandler.requestBlockLocation(SESSION_ID, blockId, blockSize);
createBlockFile(filename, blockSize);
mBlockWorkerServiceHandler.cancelBlock(SESSION_ID, blockId);
// The block should not exist after being cancelled
Assert.assertFalse(new File(filename).exists());
// The master should not have recorded any used space after the block is cancelled
waitForHeartbeat();
Assert.assertEquals(0, mBlockMasterClient.getUsedBytes());
}