White-Box Testing Strategy for a Solar Tracking Device Using NodeMCU Lua ESP8266 Wi-Fi Network Development Board Module

摘要

This paper presents a novel technique in testing the software code of a solar tracking device by implementing a White-box testing approach that makes use of a Wi-Fi module. First, we succeed in verifying if the wireless data transfer controlling the movements of the solar tracking device are in correspondence with the software code run on the main control board called Arduino UNO. Additionally to the local implementation, a cloud-based solution together with a mobile application to remotely control, test and communicate with the solar tracking device is proposed. Second, we used White-box testing techniques to test and give details about software errors in our solar tracker. We implemented unit testing techniques as well as custom code in order to find out all the loopholes and possible breakpoints in our solar tracker software by investigating Communication, Control Flow and Error handling errors. The experimental results show that our White-box testing strategy is efficient from the fault coverage and cost points of view.