What Type of Testing Is Required for Microservices

What is Microservice?

“Microservices” are also known for software architecture. According to the microservice architecture, it involves for developing the single applications that will continue to work together as a suite of small services, each code running in its individual process and also communicating with lightweight mechanisms such as an HTTP resource API. The Microservices can also support a fully automated deployment environment by deploying a machinery coding. These Microservices also required a centralized management, which is going to use different data storage technology and can be written in the other different and unique. programming language.

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How to test manually "Microservices"

A microservices architecture consists of small services that together create a complete application or task for a software. Every step of code related to microservice represents a single responsibility within the application. The advantage is that these services are not dependent on one another, which will make them deployable and testable independently.

Let’s look at some approaches for how to go for testing.

1. Unit Testing

The scope of unit testing will be the internal service of microservices. Unit test cases or scenarios should ideally be automated, depending on the development language of frontend UI and the frameworks which are used within the service.

2. Contract Testing

Contract testing for each service will treat as a black box testing and all the services are independent and their response must be verified. Any dependency on service stubs will allow the service to function but it will not be going to interact with any other services. This help to remove complicated behavior which may be caused by any external calls, So that Test Engineer can focus on performing the of a single service.

A “contract” is a service call (where we get specific result or output which is expected for certain inputs) is referred by doing the consumer-contract testing. Every consumer must receive the same results from the service, even if the service changed. However, this enhancement must not break the service functionality. If the service is designed as per above requirement, it will not break and will run over a longer duration and the consumers will not be required to modify their codes they can continue to run with this service.

3. Integration Testing

Verification of the services is required so that each and every case is individually tested and performed well. The complicated part of microservice architecture testing relates to the proper functioning of inter-service communication of the software. Consumer calls the integrated internal services to external services, which include errors and success cases. Integration testing thus validates that the system is working according to the expected conditions and also used to check the dependency between the services.

4. End-to-end Testing

End-to-end testing verifies that the entire process workflows are correct or not as per expectation, including all service and DB integration. By during testing it may put an effect on multiple services, need to ensure that the system works together and must satisfy all requirements, which help to automate Functional requirements of testing by taking user stories and verifying that the system behaves as expected.

5. UI/Functional Testing

User interface testing is the testing of the high priority as TE need to test the system according to the requirement of end-users so that they would use that. Testing on this level must feel the TE like a user trying to interact with the system. All the databases, interfaces, internal and third-party services must work together so as to produce the expected results.