CellReference cf = ar.getFirstCell();
assertTrue("row is 4",cf.getRow()==0);
assertTrue("col is 1",cf.getCol()==0);
assertTrue("row is abs",cf.isRowAbsolute());
assertTrue("col is abs",cf.isColAbsolute());
assertTrue("string is $A$1",cf.formatAsString().equals("$A$1"));
cf = ar.getLastCell();
assertTrue("row is 4",cf.getRow()==1);
assertTrue("col is 1",cf.getCol()==1);
assertTrue("row is abs",cf.isRowAbsolute());