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Selenium Grid and Jenkins: Features, Components, and Working Example

Learn about the features and components of Selenium Grid, and how it can be integrated with Jenkins for parallel test execution. Includes a working example and setup demo.

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Selenium Grid and Jenkins: Features, Components, and Working Example

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Presentation Transcript

  1. Selenium Grid and Jenkins

  2. Outline • Why Selenium Grid • Features / Components of Grid • Grid Node and Grid Hub • Why we thought of Selenium Grid • Jenkins plug-in for selenium • How to write tests – test design • Working example

  3. What is Selenium Grid • Usual Selenium Setup

  4. Issues ? • RC (Remote Control) is quite slow. • Takes a lot of time to complete all your test suits • Not suitable for large scale testing • Can run a limited number of concurrent tests. • About six browsers On same RC

  5. Work around ..

  6. Work around… • Multiple RC’s to avoid the limitation on # of parallel tests. • Issues: • Test needs to be aware of the RC being used. • Have to maintain a series of RC’s.

  7. Solution : Selenium Grid • All your components • All Can be in different machines.. • All of them can communicate using selenese.

  8. Selenium Grid • A Distributed grid of RC’s. • Main two components • Grid Hub • Grid Nodes • Grid Hub • Allocates RC’s for tests • Keeps an eye on test sessions • Entry point for all your tests • Load balances test requests to the RC’s.

  9. Grid Node • It is configured and started using a command. • Provide all your capabilities in the command. • browserType • Version • Platform – i.e. Windows,linux,CentOS • applicationName – a specific name for your node.

  10. Grid Node • Capabilities are the unique attributes for a node. • Selenium Grid code uses “DesiredCapabilities” • This capability object is passed into RemoteWebDriver instance

  11. Selenium Grid Console • It shows you all the connected grid clients(nodes)

  12. More features • Supports parallel execution • We need to write our test to execute in parallel. • Use Junit4 ParallelComputer features.

  13. Features.. • Supports Selenium WebDriver / Remote WebDriver • Grid 2.0 is the latest, more features with it. • Easy to start the Grid Hub as well as the node.

  14. Why we thought of Using Selenium • Our product has a GWT (Google web tool kit) based front end. • Complex user scenarios involved. • Big , distributed team working on features. • Usual scrum team, a single tester • No enough time to do end – end UI tests.

  15. Why we thought of Selenium Grid • Different platforms to support • Windows/IE9 • XP/IE8 • CentOS/FF • 64 bit/ 32 bit machine combinations. • Limited time and Need to execute all in one shot. “Grid allows multiple environments and parallel executions….”

  16. Selenium Grid in Jenkins • Jenkins is a CI server. • Why Jenkins ? • Our code base is huge. • Needs to ensure clean builds. • It has lot of plugins. • Its free and open • Jenkins has a plug-in for selenium grid • Easy installation. • Selenium grid is executed within the Jenkins server. • You can start grid node by pointing to this grid url. • With your desired capabilities.

  17. Jenkins JOB

  18. Jenkins Selenium Plugin

  19. How we write Tests

  20. Our Demo Setup

  21. Demo.. • Show time..

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