Top 5 Best Practices for Testing a Microservice Application

The concept of microservice is not very new. In fact, it is prevalent in the market for many years. There is no formal definition of microservices but in simple terms, it is essentially a unique method of building the software with the main objective of formulating modules that have neat interfaces and functionalities. Some of the big reputed names like Google, Amazon, Netflix, Twitter, etc. are using the microservice architecture and scaled greater heights.

Testing a microservice application is quite a challenging task. Now, a question pops out here is why? Well, there are different reasons for the same, let us have a closer look:

Despite these challenges, the advantages of a microservice application for an organization can never be overlooked. For a normal individual, getting started with testing a microservice application can be a stiff task. However, there is no need to take any stress as there are the top five best practices for microservice application testing, which are as follows:

Unit Testing

When an application is developed, then it may contain several classes having various methods. The main purpose of carrying out a unit test is to figure out whether particular software is working in the right manner or not for which it has been developed. Carrying out the manual testing of a microservice may eat up a lot of precious time and the end result may not be that much effective. Hence, it makes a greater sense to automate the microservice application testing and have great peace of mind.

Contract Testing

Contract testing is just like a black box that is basically used for the purpose of maintaining an effective flow between the consumer and the service provider. For example, there should contract between a customer and provider must be verified to ensure there is a proper understanding of the order request and the response for the order has been made rightly.

Integration Testing

In this type of testing, each component of an application is called independently and tested. It ensures that the interaction between the microservice and datastore is carried out in the right manner and the system is working seamlessly.

End-to-End Testing

This kind of testing is very challenging but extremely important to be carried out. It involves testing of every module of a microservice application to ensure that the system is running flawlessly and the objective has been achieved for which it was primarily developed.

UI/Functional Testing   

User interface (UI) or functional testing is one of the most important or prevalent methods of testing a microservice application. Here, an application is tested like a consumer would have done it. In this type of testing, it is ensured that all the relevant components such as the database, interfaces and other prominent third-party services are working in a flawless manner and most importantly providing the desired results to an organization.

Author: Prateek

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