Basic Selenium Training


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Basic Selenium Training

  1. 1. Selenium: Test Automation of Web Application Weekend Workshop for QA professionals Trainer: Dipesh Bhatewara Date: 23rd June 2012
  2. 2. Introduction 2
  3. 3. Why Test Automation 3
  4. 4. Advantages of Test Automation• Frequent and quick regression testing• Rapid feedback to developers• Virtually unlimited iterations of test case execution• Support for Agile and extreme development methodologies• Increased test coverage• Enables QA team to utilize bandwidth in exploratory testing. 4
  5. 5. When to automate?• Long projects – regression• Frequent releases and extreme programming• Quick feedback to developer – Sanity 5
  6. 6. Web Testing: Approaches• GUI Automation – locating by coordinates – using generic OS mouse/keyboard events – suitable for any GUI app• HTML/DOM Automation – parsing HTML – evaluating HTML elements (forms, input...) – DOM as presentation of application – DOM traversal – interacting with DOM tree (target.dispatchEvent,...) 6
  7. 7. Introduction to Selenium• Open Source Test Automation Framework• Developed by ThoughtWorks and Google• Robust set of tools for web-based applications• On multiple browsers• On multiple Operating Systems• Support many languages, including Ruby, Python, Java, c# and so on 7
  8. 8. Selenium Components• Selenium IDE• Selenium RC• Selenium Grid• WebDriver (Selenium 2.0) 8
  9. 9. Selenium IDE• Firefox plug-in• Integrated Development Environment for Selenium Tests.• Provides record and playback functionality.• Provides the ability to debug test scripts.• Auto complete common selenium commands.• Export tests in different formats like HTML, Java, Ruby, Python and so on. 9
  10. 10. Installation• Download IDE from -• Add as Add On to Firefox• Launch it from Tools -> Selenium IDE 10
  11. 11. IDE explained • Record/Play • Test Case • Test Suite • Command -Target – Value • Export/Import 11
  12. 12. DEMO• Click on Etsy logo and verify title• Search for Vintage shoe and verify first item’s name• Run as suite 12
  13. 13. Assignment - IDE•• Navigate to Category – Furniture -> Chair• Click on the first item in the result list• Verify the item details page is displayed• Assert the Price of the product shown on this page 13
  14. 14. Assignment IDE Test Suite• Click on Kids section on left, on Kids page click on Tweet button, Switch to new window, Sign in with wrong username and password to twitter and check the Error.• Click on ‘Accessories’ Category and test the pagination functionality• Save the Test Suite• Run as Test Suite 14
  15. 15. Commonly Used Selenium CommandsAction Commands• Open(Link) – This Command will open the specified page• click(Locator) – This Command will Click at specified target• check(Locator) – Toggles the checked value of a checkbox• type(Locator, value) –Sends text input to an element• select (Locator, value)– This will select the specified item in a listNote: most action commands in Selenium IDE also have a duplicatecommand with the AndWait suffix. When these are used the actionis performed and a page load is expected and the command will notcomplete until the page has loaded or the timeout is reached. 15
  16. 16. Commonly Used Selenium CommandsStore, Check, and Wait• isElementPreset(locator) – Checks if an element is present on the page• store(expression, variableName) – Allows you to temporarily store a value• verify(pattern) – performs verification and skip execution, if fails.• assert(pattern) – performs verification and stop execution, if fails.• waitFor(pattern) – Waits until the value matches the specified value or the timeout.Note: These Commands are heart of Selenium ,as these deal withverifiacation and validation part. There are variations available inthese commands eg. waitForPageToLoad(), waitForPopUp() 16
  17. 17. Object Identification• Using HTML properties of the Object – Name – Id – Class• Using Xpaths (DOM address) – XPath is a language for finding information in an XML document 17
  18. 18. Xpath Explained 18
  19. 19. FireBug installation & DEMO 19
  20. 20. Assignment•• Find Unique HTML Ids as well as Xpaths for below – Regsiter Button – Search text box – Fashion link – 3rd Item in second row on home page 20
  21. 21. Handy tool for Xpaths• Fire Path (Lets use this)• Xpather 21
  22. 22. OOPS Concepts• Objects• Classes• Data abstraction• Inheritance• Polymorphism 22
  23. 23. Sample Java Program 23
  24. 24. Selenium RC• A server, written in Java and so available on all the platforms.• Acts as a proxy for web requests from tests.• Client libraries for many popular languages.• Bundles Selenium Core and automatically loads into the browser 24
  25. 25. Selenium RC components• Selenium Server: launches and kills browsers, interprets and runs the Selenese commands passed from the test program, and acts as an HTTP proxy, intercepting and verifying HTTP messages passed between the browser and the AUT.• Client Libraries: provide the interface between each programming language and the Selenium RC Server. 25
  26. 26. 26
  27. 27. Install & Start• Ensure that JDK is present on the machine and is in the class path.• Downloaded Selenium RC from• Unzip to any directory on your file system.• Change directory to the Selenium Server on the command line or terminal.• Start Selenium Server. 27
  28. 28. Change Directory to Selenium Server Start selenium Server 28
  29. 29. Eclipse and Project setup• Launch Eclipse• Create Java project• Import selenium-client library• Add JUnit plugin to eclipse• Export the code of your Selenium IDE assignment as Selenium RC Junit4 code• Add the exported java file to the project and run 29
  30. 30. Handling different types of elements & Demo• Text Box• List• Check Box• Radio Buttons 30
  31. 31. Assignment• Create a fresh project in Eclipse• Add a test case to register a new user at 31
  32. 32. More Assignments• Test User Sign In – Valid & Error• Test Add To Cart and verify the country can be changed on the cart page.• Run them as suite from Eclipse 32
  33. 33. End of Day 1 33
  34. 34. Day 2 34
  35. 35. History 2004 2007 2009 2011Selenium WebDriver Selenium2 35
  36. 36. WebDriver• Is a Self Contained Library• Uses browser capabilities over injected javascripts• “Best fit” technology• Clean & Object Oriented API• Easy to maintain• Faster than Selenium 1• Tightly bound to the browser, no need of Selenium Server• Bindings : Java, C#, Python, Ruby• Android and iPhone support 36
  37. 37. Selenium Server in Selenium2• Replicate Selenium RC functionalities• Remote WebDriver• Selenium Grid 2 37
  38. 38. WebDriverWebDriver Interface Internet HTMLFirefox Chrome Opera Andriod iPhone Explorer UnitDriver Driver Driver Driver Driver Driver Driver 38
  39. 39. “BestFit”s• Internet Explorer Driver accesses the browser via the COM layer using some automation hooks that Microsoft have put there and maintain. The core code is written in C++.• FirefoxDriver is a Firefox addon that accesses items at the Chrome layer• ChromeDriver is a Chrome Extension that allows drive Chrome.• The Android driver is an APK that allows us to drive the Web View and the same with iPhone 39
  40. 40. WebDriver 40
  41. 41. Sample Code for Demonstration 41
  42. 42. Let’s setup a project• Download• New Project• Import selenium jar• Add class imported from IDE (as Junit4 Webdriver)• Run the tests 42
  43. 43. Assignment – Import Class From IDE and Run 43
  44. 44. Let’s code• Add a new test class to test• Launch the site 44
  45. 45. Locator Strategies• ID – webDriver.findElement("logo"));• Name – webDriver.findElement("q"));• Tag Name – webDriver.findElement(By.tagName("H1"));• Class name – webDriver.findElements(By.className("sponsor_logos"));• XPath – webDriver.findElement(By.xpath("//section*@id=‘miniconfs’+/a*2+"));• Link Text – webDriver.findElements(By.linkText("About"));• Partial Link Text – webDriver.findElement(By.partialLinkText("visitcanberra")); 45
  46. 46. Page Interactions•• webElement.sendKeys(...)• webElement.submit()• Actions class -> Mouse Events / Drag and Drop 46
  47. 47. Demo of Etsy Registration with Firefox 47
  48. 48. Assignment 48
  49. 49. Demo: Run Same Test On Different Browser 49
  50. 50. Assignment: Run earlier assignment on another browser 50
  51. 51. Pop-up/Alert handling• Pop up window – driver.switchTo().window(windowHan dle);• Alerts – alert = driver.switchTo().alert(); – alert.Accept(); – alert.Dismiss(); 51
  52. 52. Sample Code 52
  53. 53. Demo• .php 53
  54. 54. Assignment 54
  55. 55. Additional useful commands• Polling the DOM for N seconds – webDriver.manage().timeouts().implicitlyWai t(30, TimeUnit.SECONDS);• Testing CSS properties – webElement.getCssValue(“height”);• Javascript execution – JavascriptExecutor js = (JavascriptExecutor) webDriver; – Long value = (Long) js.executeScript("return window.scrollY");• Navigation – Navigation nav = webDriver.navigate(); – nav.back(); / nav.forward();“url”); 55
  56. 56. Backward Compatibility with Selenium 1Selenium selenium = newWebDriverBackedSelenium(webDriver,“”);"");"id=follow_twitter");selenium.waitForPageToLoad("10000");WebDriver webDriver =((WebDriverBackedSelenium)selenium).getUnderlyingWebDriver(); 56
  57. 57. Reference Sites• Xpath – writing-xpath-selectors-for-selenium-tests/ 57
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