@Test
	public void multiplicateIntToInt() {
		Context c = new Context();
		DataFactory factory = new DataFactory();
		IVPNumber a = factory.createIVPNumber();
		IVPNumber b = factory.createIVPNumber();

		a.setValueType(IVPValue.INTEGER_TYPE);
		b.setValueType(IVPValue.INTEGER_TYPE);
		c.addInt(a.getUniqueID(), 10);
		c.addInt(b.getUniqueID(), 3);

		Multiplication multiplication = factory.createMultiplication();
		multiplication.setExpressionA(a.getUniqueID());
		multiplication.setExpressionB(b.getUniqueID());

		HashMap map = new HashMap();
		map.put(multiplication.getUniqueID(), multiplication);
		map.put(a.getUniqueID(), a);
		map.put(b.getUniqueID(), b);

		IVPNumber result = (IVPNumber) multiplication.evaluate(c, map, factory);
		assertTrue(result.getValueType().equals(IVPValue.INTEGER_TYPE));
		assertTrue(c.getInt(result.getUniqueID()) == 30);
	}