@Test
public void copyBlockTest() {

    int[][] cellData = new int[][]{{0}, {1}, {2}};
    Partition p = new Partition(cellData);
    int cellIndex = 1;
    SortedSet<Integer> copyCell = p.copyBlock(cellIndex);
    SortedSet<Integer> refCell = p.getCell(cellIndex);
    Assert.assertTrue(copyCell != refCell);
}