My blog post URL: https://www.peretang.com/basic-knowledge-of-selenium/
What is Selenium
Selenium is an automated testing tool
is a set of different tools
It supports executing tests on multiple browser platforms
Why you need Selenium
1. Automate manual testing
2. Easier to complete frequent regression tests
3. Faster feedback to developers and testers
4. Test execution for almost infinite iterations
5. More disciplined test cases
6. Automatically generate defect reports
7. Complement manual testing omissions
Introduction to Selenium Components
Selenium RC
The most important project in the past, is now deprecated and no longer updated
The principle is to use a RemoteControlServer as a proxy to control the real browser
Selenium WebDriver
The combination of Selenium Rc and WebDriver includes an object-oriented API, supports the WebDriver API, and can use its API to directly call the API on the browser to obtain results and perform underlying operations on the browser. Selenium RC Compatible
WebDriver is a web automated testing tool for complex and repetitive testing. It is a competitor of Selenium, and it is intended to provide an API that is easier to use and maintain.
Selenium IDE
A design tool for building test scripts, which is a plug-in for FireFox browser, provides an easy-to-use interface to develop automated test cases, and has the function of recording, which can record the user's operation steps and convert them to export Test scripts for different programming languages
Selenium Grid
Allows tests to be run in parallel, i.e. different tests can be executed simultaneously on different remote machines, greatly improving the time required to execute tests due to the use of parallelism
SeleniumRC given SeleniumWebDriver
Disadvantages of Selenium RC
Cannot handle keyboard and mouse events
Cannot handle Same Origin Policy XSS/HTTP(S)
Can't handle popups, dialogs, basic authentication, self-signed certificates, file upload/download
Disadvantages of Selenium WebDriver
Parallelism is not supported, but this can be solved using Selenium Grid
Incomplete browser support
Inconsistent operation API for different browsers
The difference between the two
SeleniumWebDriver needs API and browser support, SeleniumRC has a unified API, but requires an additional proxy operation server
SeleniumWebDriver can simulate browsers through HTMLunitDriver for quick testing, SeleniumRC needs a real browser to exist
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