Selenium webdriver architecture explanation

How does the selenium WebDriver work?

Selenium WebDriver is a browser automation framework that accepts commands and sends them to a browser. It is implemented through a browser-specific driver. It controls the browser by directly communicating with it. Selenium WebDriver supports Java, C#, PHP, Python, Perl, Ruby.

What is WebDriver and why Webdriver is used?

The Selenium Webdriver tool is used for automating web application testing to verify that it works as expected or not. It mainly supports browsers like Firefox, Chrome, Safari and Internet Explorer. WebDriver also enables you to use a programming language in creating your test scripts (not possible in Selenium IDE).

What is the difference between selenium and selenium WebDriver?

Selenium RC interacts with browsers using Selenium RC Server.It injects JavaScript function into browsers when the web page is loaded. While Web driver makes direct talks to the browser using browser’s built in support. As WebDriver controls the browser from OS level hence its more speedy than selenium RC.

What is Selenium Grid and how it works?

Selenium Grid is a smart proxy server that makes it easy to run tests in parallel on multiple machines. This is done by routing commands to remote web browser instances, where one server acts as the hub. This hub routes test commands that are in JSON format to multiple registered Grid nodes.

What are the advantages of selenium WebDriver?

Let’s discuss the benefits of automation testing with Selenium WebDriver. Open Source. Language Support. Works Across Multiple OS. Cross Browser Compatibility Testing . Supports Multiple Frameworks and Languages. Cross-Device Testing . Community Support. Easy to Implement.

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Is Selenium WebDriver a tool?

Description: Selenium WebDriver tool is used to automate web application testing to verify that it works as expected. It supports many browsers such as Firefox, Chrome, IE, and Safari. It also supports different programming languages such as C#, Java, Perl, PHP and Ruby for writing test scripts.

Why is WebDriver an interface?

WebDriver is an interface and all the methods which are declared in Webdriver interface are implemented by respective driver class. But if we do upcasting,we can run the scripts in any browser . i.e running the same automation scripts in different browsers to achieve Runtime Polymorphism.

What is selenium mainly used for?

Selenium is basically used to automate the testing across various web browsers. It supports various browsers like Chrome, Mozilla, Firefox, Safari, and IE, and you can very easily automate browser testing across these browsers using Selenium WebDriver.

Why is selenium WebDriver more popular?

Cross-Browser Compatibility Testing: Unlike its previous versions, benefits of automation testing with Selenium WebDriver has expanded the support for automated cross-browser testing. It supports all the major browsers so you could test on Chrome, Firefox, Safari, Opera, IE, Edge, Yandex, and many more .

What are the types of selenium?

Selenium is composed of several components with each taking on a specific role in aiding the development of web application test automation. Selenium IDE. Selenium client API. Selenium Remote Control. Selenium WebDriver. Selenium Grid.

Which is the best framework for Selenium?

TestNG

Why do we need TestNG in selenium?

TestNG is a testing framework that is capable of making Selenium tests easier to understand and of generating reports that are easy to understand. The main advantages of TestNG over JUnit are the following. Annotations are easier to use and understand. Test cases can be grouped more easily.

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Why do we use selenium grid?

When it is required to proceed with the distributed test execution Selenium Grid is used . It runs test cases on different version of browsers on different OS simultaneously. By executing on different versions of browsers and OS, it also ensures the compatibility of test case with wide number of browsers and OS.

What is Selenium Grid and when do we go for it?

Selenium Grid is used to run multiple tests simultaneously on different browsers and platforms. Grid uses the hub -node concept. The hub is the central point wherein you load your tests. Nodes are the Selenium instances that will execute the tests that you loaded on the hub .

Which method is overloaded in selenium?

Method Overloading In Selenium Methods Overloading is a process of using the two methods in the same class with the same name and different parameters. Now in Selenium , we all use Implicit Wait to make the page wait for some specified time interval.