Selenium WebDriver Architecture: All You Need to Know Here
Selenium is an Open Source Automation Testing Tool designed for testing web-based applications. It operates in different browsers and different operating systems. These days, Selenium automation testing has become highly popular among the testers due to the range of benefits it offers. Besides, Selenium has gained great popularity among developers and software testers as the open-source portable framework for automation testing. This tool can automate browsers with particular browser bindings for automating web applications for testing. You can find more about Selenium by taking part in Selenium training in Bangalore.
a suite of different tools that include Selenium RC, Selenium IDE, Selenium
Grid, and Selenium WebDriver. Here comes a brief description of each of these
- Selenium RC: Also known as Selenium 1,
it was the major Selenium project for a long period before the merger of
WebDriver brought up Selenium 2. Still, Selenium 1 is supported actively and it
- Selenium IDE: Selenium IDE or Selenium Integrated Development
Environment is a Firefox plugin. Besides, it is also the simplest framework
available in the Selenium Suite that allows the users to record and playback
all the scripts.
- Selenium Grid: This is a Selenium tool that is used together with
Selenium RC for performing tests on various machines against various browsers
at the same time. It means, performing several tests in parallel against
various machines running on different operating systems and different browsers.
- Selenium WebDriver: This is a browser
automation framework, which accepts commands and then sends those to a browser.
And it is implemented through one browser-specific driver. Selenium WebDriver
directly controls the browser by communicating with it. And it supports C#,
Java, Python, PHP, Ruby, and Perl.
Selenium WebDriver is known as the most vital component of the
Selenium Tool’s Suite. The most updated version “Selenium 2.0” comes with
integrated WebDriver API that offers a more concise and simpler programming
interface. In WebDriver, the test scripts are developed by using any supported
programming languages. And therefore, these can directly be run in most of the
modern web browsers. Selenium WebDriver includes an in-built implementation of
Firefox Driver. But the user needs to plug-in the browsers specific drivers to
communicate and run the test. WebDrivers that are used most commonly include:
- Internet Explorer Driver
- Google Chrome Driver
- Safari Driver
- Opera Driver
- HTML Unit Driver
Some of the languages that WebDriver supports are Java, C#, PHP, Perl,
Ruby, and Python. So, before you learn Selenium WebDriver, you must be well
aware of any of these supported programming languages. For instance, you need
to join Python Selenium
trainingto get ideas on both Selenium and Python. At
present, Selenium WebDriver is mostly popular with C# and Java.
Selenium WebDriver Architecture:
Architecture is about how Selenium internally works. The API of Selenium
WebDriver includes interactions between browser drivers and browsers. The basic
components of Selenium WebDriver architecture are:
- Selenium Language Bindings/ Selenium Client Libraries
- Browser Drivers
- JSON Wire Protocol
- Real Browsers
Now let’s learn a few things about these components:
- Selenium Language Bindings/ Selenium Client Libraries: Selenium developers build Selenium Language Bindings/Selenium Client Libraries to support several languages. Selenium Client Library includes languages like Ruby, Java, C#, Python, and so on. So, if choose to use the browser driver in Java, you can opt for Java bindings.
- Browser Drivers: Selenium uses drivers that are specific to each browser to establish a secure connection with the browser without the requirement of disclosing the internal logic of the functionality of the browser. Here the browser drivers are also particular to the language used for automation like C#, Java, etc. When a test script is executed using WebDriver, the following operations are internally performed.
- An HTTP request is created and then it is sent to the browser driver for every command of Selenium.
- Then the driver receives the request of HTTP through the HTTP server.
- Here the HTTP server decides on all the steps to perform the instructions that are performed on the browser.
- Then the execution status is sent back to the HTTP Server that is sent back subsequently to the automation script.
- Real browsers: The browsers that Selenium WebDriver supports include:
- Google Chrome
- Mozilla Firefox
- Internet Explorer
Read here: Top
5 Smart Tips To Test Automation With Selenium WebDriver