This bachelor thesis is focused on testing of Integrated testing node (ITN in short) in version 0.9. The main aims are to compare a couple of methodics for writing test cases, then create those test cases and execute functional manual tests with evaluation. In first part of this thesis, there is introduction and description of Integrated testing node and its brief history. In next chapter are introduced methodics for creating and writing test cases, with a demonstration and a short rating. The last part consists of description of the whole proces of making test cases, including modification of template for test cases, and execution of manual tests with evaluation of the results. Outpusts of this thesis should contribute to quality assurance...