Testing RxJS Applications
Code testing is one of the best and most vital practices in modern software development. Establishing code testing as a practice ensures the reliability and correctness of our code, improves code quality, makes our code more resilient to errors, and acts as a safety net when we want to introduce a change in our code. We can use unit testing to verify that all components are working as expected in isolation. Then, we can write integration tests to verify that components in our system work together in certain scenarios or to check if they are well integrated with external systems, such as backend APIs. Tests can also serve us as documentation of the expected behavior of the code. All these benefits apply to testing RxJS code as well, especially for complex streams. By testing Observables, subscriptions, and operators, we can verify that data flows as expected and asynchronous operations are handled correctly.
Testing can be challenging, especially with...
