The article provides a comprehensive overview of Angular testing, emphasizing its significance in ensuring the quality of applications built with Angular—an open-source, TypeScript-based front-end framework supported by Google. It outlines the foundational concepts of Angular applications, likening them to LEGO blocks composed of modules, components, services, and routing, and stresses the importance of understanding these elements for effective testing. The article delves into various testing methodologies, including unit testing, integration testing, and end-to-end testing, and introduces Angular’s built-in testing tools like Jasmine and Karma, while also mentioning alternatives such as Jest and Spectator. Furthermore, it explores manual and automated testing approaches, highlighting platforms like LambdaTest for cross-browser testing to enhance testing efficiency and coverage. The article concludes by noting the scalability challenges faced as Angular applications grow and suggests LambdaTest’s HyperExecute for faster test execution in complex environments.