tests: make sure filesrc returns escaped URIs even if the input was unescaped
tests: make sure filesrc returns escaped URIs even if the input was unescaped

https://bugzilla.gnome.org/show_bug.cgi?id=654673

mparis/gstreamer,cablelabs/gstreamer,ylatuya/gstreamer,ensonic/gstreamer,jpakkane/gstreamer,surround-io/gstreamer,ylatuya/gstreamer,drothlis/gstreamer,krieger-od/gstreamer,lubosz/gstreamer,ensonic/gstreamer,ensonic/gstreamer,centricular/gstreamer,jpxiong/gstreamer,mparis/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,lovebug356/gstreamer,collects/gstreamer,justinjoy/gstreamer,ylatuya/gstreamer,cfoch/gstreamer,drothlis/gstreamer,collects/gstreamer,justinjoy/gstreamer,lubosz/gstreamer,collects/gstreamer,magcius/gstreamer,Distrotech/gstreamer,centricular/gstreamer,magcius/gstreamer,Lachann/gstreamer,cfoch/gstreamer,magcius/gstreamer,surround-io/gstreamer,krieger-od/gstreamer,jpxiong/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,surround-io/gstreamer,StreamUtils/gstreamer,collects/gstreamer,krichter722/gstreamer,lubosz/gstreamer,ylatuya/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,lubosz/gstreamer,mparis/gstreamer,shelsonjava/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,ensonic/gstreamer,cfoch/gstreamer,lovebug356/gstreamer,drothlis/gstreamer,krichter722/gstreamer,surround-io/gstreamer,centricular/gstreamer,Lachann/gstreamer,lubosz/gstreamer,cablelabs/gstreamer,shelsonjava/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,Distrotech/gstreamer,Distrotech/gstreamer,Lachann/gstreamer,cablelabs/gstreamer,magcius/gstreamer,jpakkane/gstreamer,Distrotech/gstreamer,krichter722/gstreamer,cablelabs/gstreamer,ylatuya/gstreamer,Distrotech/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,lovebug356/gstreamer,drothlis/gstreamer,Lachann/gstreamer,collects/gstreamer,Lachann/gstreamer,krichter722/gstreamer,ensonic/gstreamer,magcius/gstreamer,lovebug356/gstreamer,surround-io/gstreamer,krieger-od/gstreamer,drothlis/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,krieger-od/gstreamer,justinjoy/gstreamer,StreamUtils/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,mparis/gstreamer,jpakkane/gstreamer