@Test
public void testFilter4()
                        throws XMLStreamException, FactoryConfigurationError, IOException {

    Filter result = parse( "v100/testfilter4.xml" );
    OperatorFilter opFilter = (OperatorFilter) result;
    BBOX op = (BBOX) opFilter.getOperator();
    Envelope env = op.getBoundingBox();
    Point min = env.getMin();
    Point max = env.getMax();
    assertEquals( 13.0983, min.get0() );
    assertEquals( 31.5899, min.get1() );
    assertEquals( 35.5472, max.get0() );
    assertEquals( 42.8143, max.get1() );
}