How do I test an API call?

How do I test an API call?

API testing flow is quite simple with three main steps:

1. Send the request with necessary input data.
2. Get the response having output data.
3. Verify that the response returned as expected in the requirement.

How do you test API What are the scenarios?

API test actions

1. Verify correct HTTP status code. For example, creating a resource should return 201 CREATED and unpermitted requests should return 403 FORBIDDEN, etc.
2. Verify response payload.
3. Verify response headers.
4. Verify correct application state.
5. Verify basic performance sanity.

How does idempotency work in the PayPal API?

Idempotency enables you to correlate request payloads with response payloads, eliminate duplicate requests, and retry failed requests or requests with unclear responses. To enforce idempotency on REST API POST calls, use the PayPal-Request-Id request header, which contains a unique user-generated ID that the server stores for a period of time.

How to enforce idempotency on REST API Post calls?

To enforce idempotency on REST API POST calls, use the PayPal-Request-Id request header, which contains a unique user-generated ID that the server stores for a period of time. Note: Not all APIs support this header. To determine whether your API supports it and for information about how long the server stores the ID, see the reference for your API.

What is idempotency in HTTP methods Stack Overflow?

An idempotent HTTP method is an HTTP method that can be called many times without different outcomes. It would not matter if the method is called only once, or ten times over. The result should be the same.

When is a post API not an idempotent API?

Generally – not necessarily – POST APIs are used to create a new resource on server. So when you invoke the same POST request N times, you will have N new resources on the server. So, POST is not idempotent. GET, HEAD, OPTIONS and TRACE methods NEVER change the resource state on server.