Added simple test for attributes assortativity function
Added simple test for attributes assortativity function

econandrew/bandicoot,yvesalexandre/bandicoot,yvesalexandre/bandicoot,yvesalexandre/bandicoot,ulfaslak/bandicoot,econandrew/bandicoot,econandrew/bandicoot,ulfaslak/bandicoot,ulfaslak/bandicoot