Testing Applications Running in Containers

In the previous chapters, we have learned how we can containerize our applications written in any language, such as Node.js, Python, Java, C#, and .NET. We all know that just writing code and then shipping it to production is not enough. We also need to guarantee that the code is error-free and that it does what it is supposed to do. This is commonly subsumed under the term quality assurance, or QA for short.

It has been proven in practice over and over again that fixing a bug in an application that has been discovered in production as opposed to during development is very costly. We want to avoid this. The most cost-effective way to do so is to have the developer who writes the code also write automated tests that make sure the new or changed code is of high quality and performs exactly as specified in the acceptance criteria of the business requirement or feature specification.

Here is a list of the topics we are going to discuss in...