public void testToString() { assertEquals("LIMIT 50", new Limit(null, new Constant(new Integer(50))).toString()); //$NON-NLS-1$ assertEquals("LIMIT 100, 50", new Limit(new Constant(new Integer(100)), new Constant(new Integer(50))).toString()); //$NON-NLS-1$ assertEquals("LIMIT ?, ?", new Limit(new Reference(0), new Reference(1)).toString()); //$NON-NLS-1$ assertEquals("LIMIT -1, ?", new Limit(new Constant(new Integer(-1)), new Reference(1)).toString()); //$NON-NLS-1$ }