/* (non-Javadoc)
* @see junit.framework.TestCase#setUp()
*/
protected void setUp() throws Exception {
super.setUp();
final Book book = new BookImpl("Mybook");
_sheet = new SheetImpl(book, "Sheet1", 256, 64*1024);
_im = ((SheetImpl)_sheet).getMatrix();
_ref1 = (Ref2d)_im.addRef(_sheet, null, 1, 2, 2, 4); //B3:C5
_ref2 = (Ref2d)_im.addRef(_sheet, null, 3, 7, 4, 10); //D8:E11