Program testing and analysis play a vital role in forthcoming applications due to the integrity of layers of code by third party members, if one module or component fails, it impacts the entire application at the end-to-end testing. This paper addresses the essence of Unit testing for an organization or for an application, which helps to debug issues at an early stage in the developing phase to improves code quality and supports to make a system work accordingly as expected. The main goal of the project is to do Unit Testing on the USB Module for washing machine Using Google Testing Framework. In the project, a set of test scripts are developed by using Google-Test which is a testing framework for testing the functionality of the USB Module. The project makes use of a wide range of fatal and non-fatal assertions to test the module developed for the purpose of to and fro data transfer in washing machines.