With the expansion of mobile computing and mobile data services, the number, type, and application of location-based services will continue to expand rapidly in the coming years. These apps have attracted the interest of users from different fields, such as gaming, mobile commerce, navigation systems, emergency services, and various tracking systems. As these apps use large volumes of location data and services, efficient and accurate testing approaches become the most important and challenge issues for the academic community and industries. This paper discusses the testing process and related requirement for location-based mobile apps, and reviews current testing approaches. Moreover, primary issues and needs for testing these apps are addressed.