Selenium StudyGroup
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This document provides an overview of Selenium, an open source tool used for automating web browser testing. It discusses the main components of Selenium, including the Selenium IDE for recording and playback of tests in Firefox, the Selenium WebDriver for controlling browsers programmatically, and Selenium Grid for distributed testing across multiple environments. It also introduces TestNG as a testing framework and Maven for build management in the Selenium test environment configuration.
Selenium StudyGroup
- 1. SELENIUM 101 • Marc A Myers • Lead QA Analyst for EFSS
- 3. WHAT IS “SELENIUM”? - THE BASICS • Selenium • A suite of tools to automate web browsers across many platforms. • Those tools are the Selenium IDE for Firefox and the Selenium WebDriver. • Can be controlled by several programming languages and testing frameworks. • Many GUI based browser automation tools, APIs, and frameworks are built on top of Selenium.
- 4. SELENIUM IDE • A Firefox add-on that does simple record and playback of browser events. • Ideal environment for quickly creating Selenium tests. • Offers Debugging and breakpoints for tests created • Export tests as HTML, Ruby scripts, and other formats.
- 5. SELENIUM WEBDRIVER • Selenium 1.0 + WebDriver = Selenium 2.xx • A collection of language specific bindings to drive a browser. • It makes direct calls to the browser using each browser’s native support for automation. • The key interface against which tests are to be written in Java.
- 6. BASIC TEST ENVIRONMENT CONFIGURATION • Maven Project > TestNG (Assertions) > Selenium WebDriver > Browser • Testing one local browser at a time on the same machine as the IDE/test runner that is executing/running the test. • Advantages of this configuration: • Easy to troubleshoot your tests • Watch as the tests run locally, observe potential defects as they occur • Quick and easy to set up
- 7. DISADVANTAGES OF A BASIC CONFIGURATION • Restricted to the browsers available to your OS version/local machine. • In the case of IE, generally only the highest supported IE can be installed. • Assuming you’re on Windows, you’re not able to test against other OS and browser versions such as Safari or OSX and Linux versions of Chrome and Firefox. • It’s not scalable • Running a system or performance test can be taxing on your local machine and it holds your resources hostage until the tests have completed.
- 10. SELENIUM GRID • Supports distributed test execution. • This means running tests in a “distributed test execution” environment. • This allows you to scale test coverage by distributing your tests to several machines, with the option of parallel execution. • Manages multiple environments from a central point.
- 11. SELENIUM GRID CONT. • A grid is made up of a HUB and several NODES. • The HUB is the central point that will receive all test requests and distribute them to the NODES. • The NODES are where your testing will occur. • One NODE can have several available browsers. • A NODE can also be a mobile device.
- 13. WHY TESTNG? • Superior Parameter based testing • With @DataProvider • Advanced dependency testing • Tests can rely on each other • Suite Testing • Test groups and types • TestNG can run JUnit tests
- 14. WHY MAVEN? • Dependency Management • Avoids common client conflicts • Handles downloading, installing, and keeping track of different version of dependencies. • Streamlined Build Process • You don’t have to understand how a project works to clone it and build it.