For designing dynamic views, the AngularJS is mainly developed to overcome the shortcomings of HTML technology that makes it difficult to create dynamic and complex applications. You can modify and replace AngularJS according to your requirement. All thanks to its extensibility of AngularJS with rich libraries.
This is known as best testing framework for AngularJS applications. You can check the application in a real browser and interact with it like a user by making use of this testing tool. It is especially used for end to end testing that is mainly a Node.js program based on WebDriverJS.
Karma is also very famous testing tool in developers. This tool has very easy working process as you have to simply paste the code in tool and get an instant feedback. It offers for easy debugging from the IDE via WebStorm or Google Chrome.