throw e;
}
// FormulaParser strips spaces anyway
assertEquals("4", formulaString);
ptgs = new Ptg[] { new IntPtg(3), spacePtg, new IntPtg(4), spacePtg, new AddPtg()};
formulaString = FormulaParser.toFormulaString(null, ptgs);
assertEquals("3+4", formulaString);
}