assertEquals( 0, rdn1.compareTo( rdn2 ) + rdn2.compareTo( rdn1 ) );
rdn1 = new Rdn( " a = b + c = d " );
rdn2 = new Rdn( " e = f + g = h " );
assertTrue( rdn1.compareTo( rdn2 ) < 0 );
assertTrue( rdn2.compareTo( rdn1 ) > 0 );
assertEquals( 0, rdn1.compareTo( rdn2 ) + rdn2.compareTo( rdn1 ) );
}
/**