add unit test
add unit test

njam/CM,njam/CM,vogdb/cm,alexispeter/CM,tomaszdurka/CM,cargomedia/CM,fauvel/CM,tomaszdurka/CM,alexispeter/CM,fvovan/CM,zazabe/cm,vogdb/cm,zazabe/cm,njam/CM,vogdb/cm,zazabe/cm,alexispeter/CM,tomaszdurka/CM,zazabe/cm,tomaszdurka/CM,fauvel/CM,cargomedia/CM,fauvel/CM,fauvel/CM,vogdb/cm,mariansollmann/CM,fauvel/CM,fvovan/CM,cargomedia/CM,mariansollmann/CM,cargomedia/CM,tomaszdurka/CM,alexispeter/CM,mariansollmann/CM,njam/CM,mariansollmann/CM,fvovan/CM,njam/CM,fvovan/CM,vogdb/cm