@Test
public void testExec_asserted() {

    NodeValue v = NodeValue.makeNode("<http://www.opengis.net/def/crs/EPSG/0/27700> POINT(10 10)", WKTDatatype.INSTANCE);
    GetSRIDFF instance = new GetSRIDFF();
    NodeValue expResult = NodeValue.makeString("http://www.opengis.net/def/crs/EPSG/0/27700");
    NodeValue result = instance.exec(v);
    assertEquals(expResult, result);
}