How do you write JUnit test cases for rest controller in spring boot?

How do you write JUnit test cases for rest controller in spring boot?

Spring Boot REST API Unit Testing With JUnit

1. Step 1 – Create an API Testing Project. Install IntelliJ IDEA.
2. Step 2 – Add Dependencies.
3. Step 3 – Write Your Unit Test via JUnit.
4. Step 4 – Setting Up the Unit Tests for the APIs.
5. Step 5 – Running the Unit Tests on Your APIs.

How do you do a rest test?

Steps for Testing REST API

1. Step 1) Open Advanced REST client.
2. Step 2) Enter the URL of API to test.
3. Step 3) Select the HTTP method.
4. Step 4) Provide Headers set.
5. Step 5) Confirm the Headers set.
6. Step 6) Provide required Body content.
7. Step 7) Submit the details to start the test.

What is an ActionResult C#?

An ActionResult is a return type of a controller method, also called an action method, and serves as the base class for *Result classes. Action methods return models to views, file streams, redirect to other controllers, or whatever is necessary for the task at hand.

How to write unit test for a controller?

We will write unit tests for the following controller methods: The first controller method renders a page which shows a list of todo entries. The second controller method renders a page which shows the information of a single todo entry.

How to test the behavior of a controller?

Every unit test which we write to test the behavior of a controller method consists of these steps: We send a request to the tested controller method. We verify that we received the expected response.

How to write unit test to test tempdata?

The Unit Test to test TempData can be written as shown: Here, we are creating an object of the controller and then calling the action. typecasting the return value as ViewResult and then asserting the result. On running the test, we will find the test is passed and the controller is returning the expected TempData.

How to create unit tests for MVC applications?

The test checks whether the RedirectToRouteResult will redirect the user to a controller action named Index. In this tutorial, you learned how to build unit tests for MVC controller actions. First, you learned how to verify whether the right view is returned by a controller action.