Generative Testing in JavaScript
A. Sharif

Hi A. Sharif, thanks for a great read.

I actually wanted to reach out to you in a less public manner. But could not find a private channel to contact you through.

I was planing on showing how you could implement your examples using, so I created a test suite for it: But my example does not agree, that the last refactoring solves the problem. It still finds the counterexample handlePayment(-2, -1). I could of cause be mistaken, but I got a very talented friend of mine to review the example and he agrees that it looks like there is a problem in the example.

If that is correct, I think this shows something interesting about property based testing. The more iterations you run, the more sure you can be about correctness of the implementation — and 100 iterations is probably never enough. In addition I also think this shows that it is preferable to use a seeded random, so tests fails consistently.

Don’t take this comment the wrong way, I really enjoyed reading your post and I’m very happy people are spreading the knowledge about this powerful testing paradigm.

Kind regards

One clap, two clap, three clap, forty?

By clapping more or less, you can signal to us which stories really stand out.