Gain insights into performing REST and SOAP API test automation, writing API and integration tests from scratch, and preparing for test automation interviews with a downloadable framework.

restassured.tar.gz

TestNG

Java

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IntegrationTest

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TestNG SOAP

In software development, microservices and APIs are used for writing business logic. API testing has become an important component in the testing cycle, as it can be used to test the functionality, integration flows, load and performance.

In this course, you will learn how to perform REST and SOAP API test automation. This course covers all the required details for you to start writing API and integration tests from scratch. It will also prepare you for test automation interviews.

As part of the course, you will be able to download a sample API automation framework. You can use this for writing automation tests of modules or applications, or just extend and customize it for your own use

Learn REST and SOAP API Test Automation in Java

# What is an API?

**API** stands for **Application Programming Interface**.

It is a software interface that allows two distinct services/applications to interact without one having to know the implementation details of the other. It is what we call, protocol agnostic.


# What is a web service?

A **web service** is a medium that lets two machines communicate with each other over a network. 

In other words, it allows communication between the *client* and the *server* applications using the XML, JSON, and other plain text open standards over the *World Wide Web* (WWW).


**The *W3C* defined a [web service](https://www.w3.org/TR/ws-arch/) as**:

>*A web service is a software system designed to support interoperable machine-to-machine interaction over a network. It has an interface described in a machine-processable format (specifically WSDL). Other systems interact with the web service in a manner prescribed by its description using SOAP messages, typically conveyed using HTTP with an XML serialization in conjunction with other web-related standards*.

# Types of web services

There are two main types of web services:

* **SOAP web services** -- *SOAP* which stands for **Simple Object Access Protocol**, is a specification that enables applications to communicate with other applications. It uses an *XML-based* protocol to access web services over `HTTP`. 

* **RESTful web services** -- *REST* which stands for **Representational State Transfer**, is a service developed on the REST architecture and is often called a *RESTful* service. They are lightweight, maintainable, and scalable in nature. The underlying protocol for *REST* is `HTTP`.


# API vs web services

| API                                                                                                           | Web Services                                                     |
|---------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------|
| Not all APIs are web services                                                                                | All web services are APIs                                      |
| APIs can use any style for communication                                                                      | A web service can use SOAP, REST, and XML-RPC for communication |
| APIs can also be used to invoke functions within a software, so it does not always need a network for its operation | A web service will always need a network for its operation     |

# SOAP vs REST

Please refer to this [SOAP Vs REST](https://www.educative.io/edpresso/rest-api-vs-soap) article to understand the differences between them.

In this lesson, we’ll discuss API and web services.

About API and WebServices

Introduction to HTTP

Introduction to REST API

REST API Automation using Rest Assured

Introduction to SOAP API

SOAP API Automation

Integration Test

Allure Reporting

Manual Testing: REST and SOAP API

Bonus: API Test Automation Framework

Conclusion

About API and Web Services

What is an API?