WHAT IS MICROSERVICES TESTING?

Microservices testing is like a unit home handling independent services altogether. It is the development of unit applications that work together as small services. Each application runs individual processes while communicating with other mechanisms. for example, an HTTP resource API. Experts can write these applications in different programming languages. Thus, they use separate data storage and are easy to manage. 

HOW DO WE TEST MICROSERVICES?

Since it depends on specific services, each service has unique characteristics. It includes using different data storage technologies, using varying programming technologies, linking with HTTP resource API, and running each process with ease.

There are different ways to test microservices, and these are as following:

  1. Unit tests: It tests tiny details of the software to ensure it functions right to give the desired output. These tests’ volume is enormous. So they are often automated depending on the software’s framework.
  2. Component tests: once the application is functional, microservices undergo testing in isolation. In one application, there are many microservices. Thus, this test is for each microservice along with its linked functions like a database.
  3. Integration tests: it is the critical performance test of the services. After individual tests, integration tests confirm inter-service communications. It is to ensure that the entire system is working and all the dependencies are present.
  4. Contract tests: it is to verify that the customers receive the same response from the services. Despite future amendments to the system. IT experts name it as  ‘black box.’ It is to ensure that the whole external system is functioning.
  5. End-to-end tests: as the name suggests, it ensures that the system is working seamlessly. All the inter-linked services have good communication and are generating good results.

To make things simpler, I will present you with an example of how micro testing works.  For instance, you have a microservice 1, and it depends on two other services, 2 and 3. You will have to create a separate environment for these to work smoothly. 

So, an application is a combination of many microservices. And these work in many yet separate environments. The above mentioned tests work from small units to the entire application test. There are complexities that only expert testers can deal with. 

If you are thinking of reducing the number of microservices in an application to make things simpler, you are wrong. Microservices and testing complexity are inversely proportional. The smaller the unit, the more complex is the testing procedure. 

PROS AND CONS
Microservices are not as simple as software testing, and that is why I avoided going into extreme detail. Although this article is about microservice testing, you need a little background information as a business owner. How will you enjoy the procedure?
So let’s move on to the latter.

The prime benefit of microservice testing is that they work and can use different programming languages. Cloud computing enterprises find it very useful as the services do not have to rely on each other. Microservice testing reduces the testers’ burden-it is more comfortable to test one by one than the entire application. Thus, applications with micro testing scale better.
Microservices provides more opportunity to test new technologies on independent services. It is because the effect on one will not disturb others. Testers enjoy this flexibility to try out the latest technologies for testing.

Since microservices are small, they are less complicated and easy to understand. It improves the efficiency of testing. Thus, it saves time.
The services are independent of each other, so one can decide which service has the most users compared to the whole application. If scaling is correct, in the long run, it has a significant impact on saving costs.

Microservices may be a trend, and everyone wants to adopt it, but it has its drawbacks. Independency of the services may cause a problem when it comes to smooth communication between different modules. In these cases, the developers have to write extra codes to prevent disruption.

Applications have many microservices. The units are small, but it can become a hectic task to manage them side by side.
The thing developers dread the most is global testing. Before releasing the application, they have to go through every single microservice and the application as a whole to confirm smooth functionality.

Microservices are for large companies because they have many modules to include. Yet, for small companies, it is an extra burden on the company.

Microservice testing may prove beneficial to you. It depends on the scope of your business. Before taking this step, check the requirements of your company and your in-house expertise. Yet, no fruits ripe quickly. If you wish to thrive in the market and have a will to make quality assurance investments, then it is a golden opportunity for you to avail