Geolocation testing is a crucial practice for ensuring that websites and web applications render correctly and serve appropriate content based on a user's location, which can vary significantly across different countries, states, or cities. Selenium 4, a popular test automation framework, provides tools to facilitate geolocation testing by allowing developers to mock browser locations through its integration with Chrome DevTools and the Chrome DevTools Protocol (CDP). This capability is especially useful for testing e-commerce platforms or any web service that tailors content to diverse geographical audiences, such as during the COVID-19 pandemic when e-commerce sites restricted deliveries based on location-specific conditions. Implementations using Selenium 4 can be integrated with testing frameworks like Pytest and TestNG or executed on cloud-based platforms like LambdaTest, which further enable cross-browser testing across thousands of browser and OS combinations worldwide. By setting specific geolocation coordinates, developers can automate the testing of content localization, geofencing, and geoblocking, ultimately enhancing user experience and improving a website's search engine ranking.