As the realm of extended realities advances, it is becoming extremely important to ensure that applications within an extended reality environment are functional and have stable user interfaces. The purpose of this research project was to create a tool which integrates extended reality (XR) prototyping with usability testing. The first component of this project is a prototyping tool which utilizes generative Artificial Intelligence to create a digital twin of real-world environments within an XR environment. The second component is a tool that deploys usability testing applications within XR environments. This project integrates the two components by taking the AI generated environments and deploying the testing tool within it. This approach allows for the usability testing of XR applications in virtual environments, ensuring test replicability and software reliability while reducing potential risks and resource costs. The result of this research was the completion of a tool that allows the user to generate and manipulate various objects to create custom environments, then deploys a placeholder application on top of the scene. This research project demonstrates an innovative approach to support XR usability testing, leveraging AI generated environments for improved testing efficiency and reliability.