JUnit 5 - How to write more test with less code

Introduction

In this article, I will show and explain how you can write more tests with relatively small changes in your code. Recently, one of my colleagues wrote a massive test with repetitive code. The difference between test cases was only data that was submitted to the service. I will use JUnit 5 in this article, but feel free to check the library docs you use for writing tests.

Problem

Let’s imagine the following situation: we have a service that accepts the following data and returns the following response.

{
  "operationType": "+",
  "operands": [
    1,
    2,
    3,
    4,
    5
  ]
}

{
  "result": 15
}

Of course, we can write many tests to cover each aspect, but there is a better solution. Let me introduce to you TestFactory from JUnit 5. You may argue that artificial cases use a test factory, and I agree with you, but the article is designed to give you an idea of how you can achieve more tests without writing more code.

Access full article

Status Hub

Status Hub is simple uptime monitoring for your business. Start your free trial today! Have a question? We are ready to answer!