In the changing world of software development, testing is crucial for making sure that applications are reliable, functional, and perform well. Unit testing is a method used to check how parts or units of code behave. However, testing can get tricky when dealing with applications that rely on systems like databases, message brokers, or third-party APIs. This is where test containers come in handy alongside Docker – they are tools for developers. In this guide, we will explore the realm of test containers with Docker. Learn how to effectively use them for unit testing.
Understanding Test Containers
Before we delve into the specifics of test containers, it's important to understand their concept. Test containers are temporary containers created during testing to provide environments for running tests. These containers contain dependencies such as databases, message queues, or web servers allowing developers to create predictable testing environments. By using test containers developers can ensure that their tests run reliably across setups improving the quality and efficiency of their testing processes.