Cell tailLast = tail.last();
<BUG>assertTrue(cells[NUM_OF_CELLS - 1].equals(tailLast));
</BUG>
Cell headFirst = head.first();
<BUG>assertTrue(cells[0].equals(headFirst));
</BUG>
Cell headLast = head.last();
<BUG>assertTrue(cells[0].equals(headLast));
</BUG>
}

Cell tailLast = tail.last();
assertTrue(ascCells[NUM_OF_CELLS - 1].equals(tailLast));
Cell headFirst = head.first();
assertTrue(ascCells[0].equals(headFirst));
Cell headLast = head.last();
assertTrue(ascCells[0].equals(headLast));
}
