What are the good way to write the test cases for REST API?

For each API request, the test would need to take the following actions:

1. Verify correct HTTP status code.
2. Verify response payload.
3. Verify response headers.
4. Verify correct application state.
5. Verify basic performance sanity.

What is the approach to test API?

API testing flow is quite simple with three main steps: Send the request with necessary input data. Get the response having output data. Verify that the response returned as expected in the requirement.

How do you write integration test cases for RESTful Web services?

Writing Integration Test for the POST Rest Service

1. String actual = response. getHeaders(). get(HttpHeaders. LOCATION). get(0); : Get the Location header from the response.
2. assertTrue(actual. contains(“/students/Student1/courses/”)) : Assert that the header contains the uri of the newly created resource.

How do you do REST API load testing?

If you need to load test you need to add your own server’s name.

1. Add a Thread Group. Right Click -> Add- > Thread Group. Here we defined “Number of Threads = 50” and “Loop Count = 5”.
2. Add a HTTP Request. Right Click on REST Example -> Add -> Sampler -> HTTP Request.
3. Fill in the necessary values:

How do I rest Test API client?

1. Step 1 – Create an API Testing Project. Install IntelliJ IDEA.
2. Step 2 – Add Dependencies. Now that we have a project, we need to setup the 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.

What is rest assured API testing?

REST Assured is a Java library for testing RESTful APIs. It is widely used to test JSON and XML based web applications. Furthermore, it fully supports all methods including the GET, PUT, POST, PATCH, and DELETE. Still, you are required to have Java, Maven, TestNG, and IDE (IntelliJ, Eclipse, etc.)

Are API tests integration tests?

API testing is a type of software testing that involves testing application programming interfaces (APIs) directly and as part of integration testing to determine if they meet expectations for functionality, reliability, performance, and security. Since APIs lack a GUI, API testing is performed at the message layer.

How do you measure the performance of an API?

API performance metrics are measured in a hierarchical structure in conjunction with operational API metrics. Operational metrics are the most basic set of the metric structure for measuring API performance. The metrics include number of API calls, CPU or memory usage.

What are the rest assured methods?

Method Summary

Modifier and Type	Method and Description
static Response	delete(String path, Object… pathParams) Perform a DELETE request to a path .
static Response	delete(URI uri) Perform a DELETE request to a uri .
static Response	delete(URL url) Perform a DELETE request to a url .

How do you write a unit test for a REST API?

You either just call the component, if no input is required, or give it an input and determine the output. In the context of REST API, a unit is a single endpoint request, and writing a unit test for this particular API depends on what you want to test in its response base on the request sent.

What is restrest API testing?

Rest api testing is done by GET, POST, PUT and DELETE methods. Rest stands for Representational State Transfer. It is an architectural style and an approach for communication used in the development of Web Services. REST has become a logical choice for building APIs.

What are the things to be checked when testing API?

Things that are to be checked are its behavior for happy path, and negative test cases regarding data, request methods, request body, response and many more. For both the cases you need to have scenarios to perform to Test your API according to the functionality of the API.

How to test REST API in test automation using Python?

Using unit tests python package and requests modules, we can test REST API in test automation. Below is the code snippet for which I have written unit tests in one of my pull requests.