por Integration tests with Supertest are as essential as unit tests, since they will work together to check if their operation is correct, from the core to the general overview of a code project. Thus, You will be able to meet the objectives of your code project and avoid unnecessary errors or problems, which will save you time.
If you want to continue learning about programming tests, read this article about the integration with Supertest.
What are integration tests?
In our post on integration and regression testing we explain how they work and why they are so important in the development of a program, as well as to perfect development methodologies. Broadly speaking, an integration test is responsible for checking the operation of a complete application. Unit tests are responsible for checking the components individually, while integration tests will do so collectively.
Therefore, integration tests are responsible for confirming whether the functionalities that work well individually also do so in conjunction with other components.
Integration with Supertest
Supertest is a tool that allows you to assemble APIs virtually, that is, it is a framework which allows you to abstract the API using **** requests. In this way, you will design an API and, instead of setting up the API and making requests against it in the web development files, you will be able to run it virtually.
The first version of Supertest (0.1) was released on July 2, 2012; However, they did not launch the version 1.0 until 3 years later, on May 11, 2015.
The integration with Supertest is done with other tools, as it is a Node package. It can be used together with Mocha or Jest to check the exact result of the requests made to the API.
In the same way, this union is made to perform the integration test. While Mocha or Jest do the checking component by component, the integration with Supertest takes care of doing it together.
We recommend the mandatory implementation of integration tests with Supertest for all the apps you develop, since thanks to it you can check what your API returns at all times and, in addition, you will be able to verify that there is no or will be unexpected behavior.
Anatomy of the integration test with Supertest
Now we will see what an integration test with Supertest looks like. In the anatomy of an integration test with Supertest you are going to import the definition of your serverwhich is configured when mounting a backend with app listener. Instead of making a listenyou pass it to Supertest.
Then, a POST request is made to this endpoint, with a defined element or point. In this way, the API will return a status of createdthat is, it will indicate that the request has been created.
You can add a specific user ID to the test, as well as a title that accompanies it in its operation. Either way, it should look like the code excerpt in the image above.
If you want to continue exploring the features and functionalities of Supertest, you can review the documentation on Supertest.
Don’t stop studying!
If you want to continue learning about integration tests with Supertest and other tests that you can implement in your code programs, it is time to continue learning and practicing. To achieve this, we recommend that you review our training in Full Stack Web Development Bootcampwith which you can learn theoretically and practically with the support of great professionals in the IT sector. Dare to enter and continue learning to stand out in the job market and change your future!