@Test
public void testGetParameterValues() {

    ParameterValueGroup pvg = transform.getParameterValues();
    
    // Descriptor is the same as provider's
    assertEquals(pvg.getDescriptor(), NADCONTransform.Provider.PARAMETERS);
    // One single value
    assertEquals(pvg.values().size(), 2);
    
    Object value = pvg.parameter("Latitude difference file").getValue();
    assertTrue(value instanceof URI);
    assertEquals(value.toString(), STPAUL_LAS);
    
    value = pvg.parameter("Longitude difference file").getValue();
    assertTrue(value instanceof URI);
    assertEquals(value.toString(), STPAUL_LOS);
}