Components of selenium

 

What is Selenium?

Selenium is a testing tool for web applications. It works across all operating systems and browsers. Selenium is not just a tool, it is a tool to help web developers. Selenium is a powerful application management tool. It works on all platforms and does a great job of writing languages ​​like Python, Java, C# and more. work in python. Selenium consists of four components: Selenium GRID, Selenium RC, Selenium IDE, and Selenium Web Driver. Selenium Course in Noida is the best place for learning.

Components of Selenium

Selenium used for a long time in the industry and is used globally by automation testers.

Following components of selenium:

• Selenium IDE

Selenium IDE (Integrated Development Environment) is the core tool of Selenium Suite. A complete development environment (IDE) platform for testing Selenium. Firefox and Chrome extensions are included. Captures modify and destroy performance tests. It was earlier known as Selenium Recorder. Selenium-IDE was originally developed by Shinya Kasatani and contributed to the Selenium project in 2006. Selenium IDE was designed with minimal maintenance. Selenium IDE was first maintained in 2018.

The script can be written both automatically and manually, which supports automated work and allows rapid legal changes. The script is recorded in Selenium, a specialized Selenium language. Clancy provides instructions to the browser to act (click a link, select an option) and returns information on a results page.

• Selenium RC (Remote control) 

Selenium Remote Control (RC) is a Java server that accepts browser commands over HTTP. RC enables automated testing of web applications in programming languages, allowing Selenium to be integrated into existing testing models. To make writing tests easier, Selenium Programs provides client drivers for PHP, Python, Ruby, NET, Perl, and Java. The Java driver can be used with JavaScript. Running test-html requires the Selenium RC server to be running - which means the results will be different every time you run it. However, only one instance of Selenium RC can run at a time for Java/PHP analysis.

• Selenium Web Driver

Selenium WebDriver is the successor of Selenium RC. Selenium WebDriver receives commands (in Selenium or from the client API) and sends them to the browser. This is done by processing the sender's input on the browser and receiving the result. Most software drivers launch and access a web browser (such as Internet Explorer, Google Chrome, Firefox, or Safari). There is also an HtmlUnit driver that emulates a browser that uses the HtmlUnit headerless browser.

Selenium WebDriver does not require a dedicated server for testing. Instead, WebDriver runs directly in the browser. However, Selenium Grid and WebDriver can be used to run remote tests.

 Whenever possible, WebDriver uses native OS-level functions, rather than browser-based JavaScript commands, to run the browser. This includes issues with minor differences between normal commands and JavaScript, including security restrictions.

• Selenium GRID

Selenium Grid is a platform that enables remote testing of web applications. With Selenium Grid, the server acts as a hub. Investigators call the centre for samples. On the Internet, there is a list of servers that provide access, for example, to browsers (Internet nodes) and enable the use of these objects. Selenium Grid can run tests on multiple machines simultaneously and manage different browsers and browser settings between them (on each test).

Running tests on a remote browser instance can be useful for deploying transfer tests across multiple systems and running tests on cross-platform browsers. The latter is more useful if not all browsers are used for testing on the same platform.