tests: add another adapter test
tests: add another adapter test

Test performance of merging

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