A year ago I joined a team which made heavy use of the Java Reactor library for their pub-sub system. Reactor is a library for high-performance, parallel programming using a functional API. The code tends to look like this: Flux.from(p) .ofType(SubscribeToShardEvent.class) .flatMapIterable(SubscribeToShardEvent::records) .limitRate(1000) .buffer(25) .subscribe(e -> System.out.println("Record batch = "...

This blog is part of a series on end-to-end (E2E) testing in Cypress. In this post, we will take a look at how our team uses Cypress to benefit our workflow and increase the safety in which we deploy new features. This information is available in this presentation I give...

This blog is part of a series on end-to-end (E2E) testing in Cypress. In this post, we will take a look at what Cypress is, why our team chose it, and things you may want to consider when evaluating it for your own projects. Future posts will expound upon how...

This is part of our Quality Assurance (QA) Community of Practice’s testing collection. The goals of this collection are to spark ideas for teams without dedicated testers, to have open discussions about testing, and to share information on testing topics that we’re passionate about. Today we will be focusing on...

Prerequisites This article builds on the prior article: Node Reference - Validation. Add Integration or Smoke Tests So far, our testing strategy has consisted of only Unit Testing, testing each module in isolation. While this type of testing covers most business logic, it does leave some gaps. It does not...

Prerequisites This article builds on the prior article: Node Reference - Put. Add model validation We now have a service that allows us to create product records but does not provide any mechanism for ensuring those products contain all the required data we need in the correct format. For this,...

Prerequisites This article builds on the prior article: Introduction. Unit Testing We plan on using Test Driven Development so we need to set up some sort of unit testing framework. For this task we’re turning to Jasmine. Mocha/Chai/Sinon and Jest are also popular options. They are all similar but the...

I recently wanted to unit test a method that assigned a delegate to an event handler. I derived a way to use Reflection for asserting that the delegate was attached. This article explains my solution. Note: If you are looking for information on C# events and delegates, I recommend you...

After years of being immersed in Java development, I must admit that I got spoiled by its strong and mature ecosystem. Hence, whenever I want to pick up a new technology or programming language the following must be there: Support by my favorite IDE (Eclipse or IntelliJ IDEA) Mature building...

If you have ever practiced test driven development (TDD), then you are probably familiar with the TDD mantra – red, green, refactor. I’m a big proponent of TDD, but I think the TDD mantra is missing a fourth step. In his book that introduced me to TDD, Test Driven Development:...