// adding blank to 1.0 gives 1.0
assertEquals(1.0, cv.getNumberValue(), 0.0);
// check with string operand
cell.setCellFormula("\"abc\"&IF(1,,)");
fe.notifySetFormula(cell);
cv = fe.evaluate(cell);
assertEquals(HSSFCell.CELL_TYPE_STRING, cv.getCellType());
// adding blank to "abc" gives "abc"
assertEquals("abc", cv.getStringValue());