@Test
public void shouldRemainAliveWhenReviveIsCalledOnAliveCell() {
Cell cell = new Cell(true);
cell.revive();
assertEquals(new Cell(true).format(), cell.format());
}
@Test
public void shouldReviveDeadCellWhenReviveIsCalled() {
Cell cell = new Cell(false);
cell.revive();
assertEquals(new Cell(true).format(), cell.format());
}