Add tests to check return value of seek
Add tests to check return value of seek

swak/mopidy,vrs01/mopidy,quartz55/mopidy,jmarsik/mopidy,hkariti/mopidy,SuperStarPL/mopidy,jodal/mopidy,ZenithDK/mopidy,diandiankan/mopidy,tkem/mopidy,jmarsik/mopidy,diandiankan/mopidy,bencevans/mopidy,glogiotatidis/mopidy,SuperStarPL/mopidy,priestd09/mopidy,adamcik/mopidy,jodal/mopidy,mopidy/mopidy,SuperStarPL/mopidy,ali/mopidy,ali/mopidy,priestd09/mopidy,SuperStarPL/mopidy,adamcik/mopidy,glogiotatidis/mopidy,kingosticks/mopidy,jmarsik/mopidy,ali/mopidy,bencevans/mopidy,rawdlite/mopidy,diandiankan/mopidy,glogiotatidis/mopidy,hkariti/mopidy,dbrgn/mopidy,tkem/mopidy,mopidy/mopidy,jcass77/mopidy,dbrgn/mopidy,ZenithDK/mopidy,swak/mopidy,rawdlite/mopidy,adamcik/mopidy,bacontext/mopidy,glogiotatidis/mopidy,quartz55/mopidy,mokieyue/mopidy,abarisain/mopidy,ZenithDK/mopidy,pacificIT/mopidy,bencevans/mopidy,liamw9534/mopidy,woutervanwijk/mopidy,kingosticks/mopidy,jodal/mopidy,rawdlite/mopidy,vrs01/mopidy,jcass77/mopidy,dbrgn/mopidy,quartz55/mopidy,abarisain/mopidy,dbrgn/mopidy,mokieyue/mopidy,hkariti/mopidy,bacontext/mopidy,jmarsik/mopidy,mopidy/mopidy,mokieyue/mopidy,swak/mopidy,vrs01/mopidy,bacontext/mopidy,jcass77/mopidy,pacificIT/mopidy,ali/mopidy,liamw9534/mopidy,priestd09/mopidy,swak/mopidy,tkem/mopidy,hkariti/mopidy,pacificIT/mopidy,tkem/mopidy,bacontext/mopidy,pacificIT/mopidy,mokieyue/mopidy,kingosticks/mopidy,woutervanwijk/mopidy,diandiankan/mopidy,rawdlite/mopidy,bencevans/mopidy,ZenithDK/mopidy,vrs01/mopidy,quartz55/mopidy