@Test
public void testExec_true() {

    NodeValue geometryLiteral = NodeValue.makeNode("<http://www.opengis.net/def/crs/EPSG/0/27700> POINT EMPTY", WKTDatatype.INSTANCE);
    IsEmptyFF instance = new IsEmptyFF();
    NodeValue expResult = NodeValue.makeNodeBoolean(true);
    NodeValue result = instance.exec(geometryLiteral);
    assertEquals(expResult, result);
}