@Test(expected = ExprEvalException.class)
public void testExec_pos1_fail() {

    NodeValue v1 = NodeValue.makeFloat(0.0f);
    NodeValue v2 = NodeValue.makeString("e");
    NodeValue v3 = NodeValue.makeFloat(10.0f);
    NodeValue v4 = NodeValue.makeFloat(11.0f);
    ConvertLatLonBoxFF instance = new ConvertLatLonBoxFF();
    NodeValue expResult = NodeValue.makeNode("<http://www.opengis.net/def/crs/EPSG/0/4326> POLYGON((0.0 1.0, 10.0 1.0, 10.0 11.0, 0.0 11.0, 0.0 1.0))", WKTDatatype.INSTANCE);
    NodeValue result = instance.exec(v1, v2, v3, v4);
    //assertEquals(expResult, result);
}