### Question:
ChunkManagerDummyImpl implements ChunkManager { @Override public ChunkBuffer readChunk(Container container, BlockID blockID, ChunkInfo info, DispatcherContext dispatcherContext) { return ChunkBuffer.wrap(ByteBuffer.allocate((int) info.getLen())); }  @Override void writeChunk(Container container, BlockID blockID, ChunkInfo info,
      ChunkBuffer data, DispatcherContext dispatcherContext); @Override ChunkBuffer readChunk(Container container, BlockID blockID,
      ChunkInfo info, DispatcherContext dispatcherContext); @Override void deleteChunk(Container container, BlockID blockID,
      ChunkInfo info); @Override void deleteChunks(Container container, BlockData blockData);  }### Answer:
@Test public void dummyManagerReadsAnyChunk() throws Exception { ChunkManager dummy = createTestSubject(); ChunkBuffer dataRead = dummy.readChunk(getKeyValueContainer(), getBlockID(), getChunkInfo(), getDispatcherContext()); assertNotNull(dataRead); }