@Test
	public void testInfixToPostfix15() throws DAIllegalArgumentException,
			DAIndexOutOfBoundsException, ShouldNotBeHereException,
			BadNextValueException, UnmatchingParenthesisException {
		try {
			infix.addLast("+");
			infix.addLast("-23");
			QueueInterface<String> postFix = calc.infixToPostfix(infix);
			String result = "24+-23+";
			String inCalc = calc.stringTrans(postFix);

			System.out.println(inCalc);
			assertEquals(result, inCalc);

		} catch (DAIllegalArgumentException e) {
			throw new DAIllegalArgumentException();
		} catch (DAIndexOutOfBoundsException e) {
			throw new DAIndexOutOfBoundsException();
		} catch (ShouldNotBeHereException e) {
			throw new ShouldNotBeHereException();
		} catch (BadNextValueException e) {
			throw new BadNextValueException();
		} catch (UnmatchingParenthesisException e) {
			throw new UnmatchingParenthesisException();
		}
	}