Add a couple of additional tests for query strings.
Add a couple of additional tests for query strings.

heetch/mux,Vorstack/mux,muroachanf/mux,TramPamPam/mux,Manbeardo/mux,matk86/mux,wfxiang08/mux,Arkan/mux,laohanlinux/mux,gorilla/mux,dvln/mux,pH14/mux,CedarLogic/mux,outrightmental/go-mux,studygolang/mux,w4ngyi/mux,scriptoLLC/mux,gopherlabs/gopher-providers-mux,coolljt0725/mux,buddhamagnet/mux,kiip/mux,Gorilla/mux