This report is the proof of concept that shows how Coded UI can be used for the automation of GUI tests. For this thesis-work, an industrial case study is done on 26 different test cases provided at the company Basalt AB. The problem they had was that testing was very time consuming and was therefore not done as often as needed to keep the level of quality required for the system developed. The method that has been used are called the validation method and the work was according to that divided into five steps: choosing test cases, a learning process, implementation, compare the results and then draw conclusions. Test automation has benefits of time savings and the fact that tests will be reused. Testing will take minutes instead of hours and the tests can be executed over and over again as many times as needed. So by changing from manual testing to automated testing, tests can be run faster and therefore more often. The investment of automated testing will be repaid before the end of the fourth test round. So conclusions can be drawn from the results of this thesis and it shows that it absolutely is worth the investment of automating the testing process.