@Test
public void testPrecedence() throws Exception {

	DDMExpressionImpl<BigDecimal> ddmExpressionImpl = createDDMExpression(
		"4 - 2 * 6");
	BigDecimal expected = new BigDecimal("-8");
	BigDecimal bigDecimal = ddmExpressionImpl.evaluate();
	Assert.assertEquals(0, bigDecimal.compareTo(expected));
}