Added additional unit test for bug #7972.
Added additional unit test for bug #7972.

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