tests: add more tests for controller
tests: add more tests for controller

The tests verify that bug #616846 is indeed fixed.

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