Added tests for delete action.
Added tests for delete action.

MBRG/otrs,thorsteneckel/otrs,PortgasDAce/otrs,vlascoder/otrs,nilei/otrs,thorsteneckel/otrs,StCyr/otrs,balazj/otrs,balazj/otrs,mbeijen/otrs-1,StCyr/otrs,eliasp/otrs,muehlbauer/otrs,moritz/otrs,linearregression/otrs,nilei/otrs,mbeijen/otrs-1,eliasp/otrs,StCyr/otrs,nilei/otrs,muehlbauer/otrs,capeit-tto/otrs,PortgasDAce/otrs,moritz/otrs,balazj/otrs,oiami/otrs,eliasp/otrs,rudy500/otrs,MBRG/otrs,vlascoder/otrs,xhoy/otrs,mburggraf/otrs,s7design/otrs,noritnk/otrs,muehlbauer/otrs,brandonshults01/otrs,balazj/otrs,moritz/otrs,oiami/otrs,moritz/otrs,oiami/otrs,brandonshults01/otrs,s7design/otrs,crythias/otrs,moritz/otrs,mbeijen/otrs-1,capeit-tto/otrs,eliasp/otrs,eliasp/otrs,PortgasDAce/otrs,brandonshults01/otrs,linearregression/otrs,linearregression/otrs,thorsteneckel/otrs,thorsteneckel/otrs,MBRG/otrs,rudy500/otrs,mburggraf/otrs,xhoy/otrs,xhoy/otrs,mburggraf/otrs,crythias/otrs,rudy500/otrs,capeit-tto/otrs,muehlbauer/otrs,mburggraf/otrs,s7design/otrs,thorsteneckel/otrs,mburggraf/otrs,balazj/otrs,noritnk/otrs,brandonshults01/otrs,linearregression/otrs,nilei/otrs,StCyr/otrs,s7design/otrs,MBRG/otrs,crythias/otrs,oiami/otrs,crythias/otrs,s7design/otrs,crythias/otrs,rudy500/otrs,linearregression/otrs,oiami/otrs,StCyr/otrs,PortgasDAce/otrs,brandonshults01/otrs,xhoy/otrs,vlascoder/otrs,rudy500/otrs,muehlbauer/otrs,noritnk/otrs,xhoy/otrs,MBRG/otrs,nilei/otrs,PortgasDAce/otrs