String actualFormula=cell.getCellFormula();
assertEquals("myFunc()", actualFormula);
HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(sheet, wb);
fe.setCurrentRow(row);
CellValue evalResult = fe.evaluate(cell);
// Check the return value from ExternalFunction.evaluate()
// TODO - make this test assert something more interesting as soon as ExternalFunction works a bit better
assertEquals(HSSFCell.CELL_TYPE_ERROR, evalResult.getCellType());
assertEquals(ErrorEval.FUNCTION_NOT_IMPLEMENTED.getErrorCode(), evalResult.getErrorValue());