When working with third-party APIs, it’s not uncommon to receive different responses when calling the same endpoint. This can make it difficult to test the integration of our system with theirs. To simulate these behaviors and test our system’s response to them, we can use WireMock.

When working with Kafka, it is very convenient to verify that we are producing the message correctly if we are the producer. One way to do this is to validate/assert that the message has successfully landed in a topic.

When developing an application where certificates are used, it is often convenient to test it using a non-real system to verify that we are creating a good request with the certificate included. One way to do this is to simulate with WireMock a system which needs a valid certificate to respond correctly and validate it using Postman.

This is a collection of testing tools that we will be compiling, so this list may grow.

Let’s assume that we have installed zsh and two versions of Java on our computer (Java 17, Java 11). To conveniently change the Java version, we can create a function in the .zsh file and just run a command that will be equal to the name of the function and we will be able to change it.

How to deserialize from json to a class without using a custom deserializer.