public void test_L3_SpeciesReference_hasRequiredAttributes()
{
SpeciesReference sr = new SpeciesReference(3,1);
assertEquals( false, sr.hasRequiredAttributes() );
sr.setSpecies( "id");
assertEquals( false, sr.hasRequiredAttributes() );
sr.setConstant(false);
assertEquals( true, sr.hasRequiredAttributes() );
sr = null;
}