@Test
public void addBlockByUuidToMetafile() {

    Metafile newMetafile = vufsService.createEmptyMetafile();
    vufsService.addMetafileToMetatable(newMetafile);
    String newBlockUuid = UUID.randomUUID().toString();
    Metafile withNewBlock = vufsService.addBlockByUuidToMetafile(newBlockUuid, newMetafile);
    assertTrue(withNewBlock.getBlockUuidList().contains(newBlockUuid));
}