Introduction and usage of Selenium Framework

Selenium is open source automation framework and it support with web application testing along with different browser platforms.

Selenium WebDriver supports most of the popular programming languages used by developers and testers, namely — Python, Java, C#, Ruby, etc...

It supports popular operating systems such as Windows, Mac OS, Linux, and Solaris.

Selenium WebDriver APIs are used for communicating between programming languages and web browsers.

Usage of selenium:

Main thing its open source framework

Selenium WebDriver has a wide-range of commands that are user-friendly & very easy to use

Components like Selenium web driver, Selenium IDE and Selenium Grid

Most of people using web application automation testing for selenium web driver

Testing web applications for functionality, regression and performance.

Its support with CI/CD operations

Cross browser testing

Headless browser automation — Selenium WebDriver supports testing on HTMLUnit browsers (or headless browsers), whereas Selenium RC does not support it.

Selenium WebDriver does not interact directly with the web elements on a page. A browser-specific Selenium WebDriver acts as the bridge between the test script and the web browser. Selenium WebDriver is the main component that communicates with the web browser. And locators are used for locating elements on the page so that appropriate methods can be used for interacting with the element.

Selenium Grid allows us to get rid of multiple local setups for the various desired combinations we need to test. Selenium Grid also allows us to perform Parallel Testing by sending commands to remote web browser instances from a hub server.

Firefox is the default web browser of Selenium WebDriver.

Relevance of selenium automation using python:

Python is third-most loved programming language. It is also the most wanted programming language

its more efficiently used for python in selenium

python is easy to learn and Automating repetitive tasks

Selenium can interact with elements and wait for dynamic content to load, enabling comprehensive data extraction.

dynamic web scraping also support with CI/CD operations

Testing web applications for functionality, regression and performance.

allows you to use Python to programmatically interact with dynamic, JavaScript-generated web pages

Python offers simple and readable bindings (APIs) for this interface, making scriptwriting straightforward and efficient

allowing scripts to control actual browsers like Chrome, Firefox, and Edge

Selenium automates monotonous browser-based tasks, such as generating reports, managing social media metrics, or performing bulk data input/deletion.

Basic Workflow with Python Setup: Install the selenium package via pip (pip install selenium). Initialization: A script starts by initializing a WebDriver instance for a specific browser (e.g., Chrome, Firefox). Navigation: The script instructs the browser to navigate to a URL. Element Interaction: Using locator strategies (like ID, name, XPath, or CSS selectors), the script finds web elements (text boxes, buttons, links). Action: The script performs actions on these elements, such as click(), send_keys(), or retrieving text. Validation: The script verifies that the expected outcome occurred (e.g., checking for a success message or correct page title). Teardown: The browser session is closed.