Selenium Tips & Tricks Guide
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Have unanswered Selenium questions? Want to learn how to use Selenium like a Pro? Join Dave Haeffner - author of The Selenium Guidebook - as he steps through the best and most useful tips & tricks from his weekly Selenium tip newsletter (Elemental Selenium).
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Selenium Tips & Tricks Guide
- 1. Selenium Tips & Tricks by Dave Haeffner
- 2. New to Selenium? • Selenium Bootcamp http://se.tips/se-bootcamp • Selenium Guidebook http://se.tips/se-guidebook • Weekly Selenium Tips http://se.tips/se-weekly-tips
- 5. Headless Benefits: - Speed - Maintenance - Screenshotting http://se.tips/all-headless-browsers
- 7. Why use it? Ideal for running small test suites on a headless machine e.g., a Continuous Integration (CI) Server
- 8. NOTE - display port collisions - use unique values - e.g., CI build number
- 9. NOTE - display port collisions - use unique values - e.g., CI build number
- 12. Why use it? • Faster execution times • Also useful for a CI server • Not limited to just Linux
- 13. Step 2 - Start PhantomJS w/ WebDriver flag Step 1 - Download PhantomJS http://phantomjs.org/download.html Step 3 - Connect Your Test to PhantomJS using Selenium Remote NOTE You can also connect PhantomJS to a Selenium Grid http://se.tips/ghost-driver-grid Option 1
- 15. Step 2 - Tell Selenium where it is Step 1 - Download PhantomJS http://phantomjs.org/download.html Step 3 - Launch Selenium with PhantomJS locally Option 2
- 17. Visual Testing
- 18. A Visual Testing Primer • Check that an application’s UI appears correctly • Can also be used to verify content • Hundreds of assertions for a few lines of code
- 19. Visual Testing Challenges • Managing complexity • False positives • e.g., shifting content, dynamic content, typos
- 21. In pom.xml
- 29. Visual Testing Write-ups http://se.tips/se-visual-1 Getting Started http://se.tips/se-visual-2 False Positives part 1 http://se.tips/se-visual-3 False Positives part 2 http://se.tips/se-visual-4 Add Visual Testing To Your Existing Tests http://se.tips/se-visual-5 Add Visual Testing To Your BDD Tests
- 30. Selenium Grid Resources • http://elementalselenium.com/tips/26-cloud • http://elementalselenium.com/tips/52-grid • http://elementalselenium.com/tips/70-grid-extras
- 31. Fun with a Proxy Server
- 35. Configuration • Use a proxy server to capture the traffic from your Selenium test(s) • Find the status code for the action you’re interested in (e.g., visiting a URL) • Assert that the status code is what you expect
- 39. Configuration • Use a proxy server to manipulate the traffic from your Selenium test(s) • Identify third-party resources that are slow to load (which could negatively impact your tests) • Blacklist them (e.g., make it so they don’t load)
- 44. Configuration • Use a proxy server to capture the traffic from your Selenium test(s) • Convert the HTTP Archive into a JMeter JMX file • Run the new JMX file with JMeter to enact load on your application (modify as needed)
- 49. Option 1 - Proxy Server Option 2 - HTTP Library Option 3 - JavaScript
- 50. Option 1: Proxy Server
- 51. Option 1: Proxy Server
- 52. Option 1: Proxy Server
- 53. Option 2: HTTP Library
- 54. Option 2: HTTP Library
- 55. Option 2: HTTP Library
- 60. Configuration • Use Selenium to trigger a forgot password workflow (to an send to a real email address) and keep the browser session active • Retrieve the e-mail and the password information via the email provider’s API • Use the password information in the active Selenium session (if applicable)
- 61. NOTE - not free - open issue
- 65. • 3 page states available • You can identify which state you’re in because there is different header text for each • When you’re in the control: A/B Test Control • For the variation: A/B Test Variation 1 • When you’re not in a test: No A/B Test http://the-internet.herokuapp.com/abtest
- 66. Configuration • You can easily opt-out of A/B tests by • forging a cookie • appending a query to the URL • This way you get a known state of the page which isn’t likely to change without your knowledge
- 70. File Management
- 73. Options • GUI manipulation with something like AutoIt • Input the file path into the form field (side-stepping the system dialog)
- 76. Two approaches • Configure Selenium to download to local disk, and delete the file when done • Use an HTTP library, perform a HEAD request, and check the headers for the correct content type & length. Why? • An order of magnitude faster using Selenium • No need to download the file
- 77. With Selenium
- 78. With Selenium
- 79. With an HTTP library
- 80. With an HTTP library
- 88. More Selenium Resources • Selenium Bootcamp http://se.tips/se-bootcamp • Weekly Selenium Tips http://se.tips/se-weekly-tips • Weekly Se Tip Code http://se.tips/oss-tip-code • Selenium Guidebook http://se.tips/se-guidebook
- 89. Available in Java and Ruby (C#, Python, & JS coming soon!) https://seleniumguidebook.com