Appendix C. Testing Rx queries and operators

One of the things that differentiates an amateur programmer from a professional is the ability to test the code that was written and ensure that it does what it needs to do. Writing unit tests allows you, the programmer, to validate that you created the right solution, and be certain that your future development won’t affect or ruin the code you previously wrote (known as regression). Rx queries and operators are no different, and you should invest the time to test them as well. I’ll even go so far as to say that by testing, you’ll get a better understanding of your craft and improve your design. In this appendix, you’ll learn the utilities that the Rx library provides to facilitate your testing and ...

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