But I Know What I Like: Abstraction is the Key to Automation
0 likes1,088 views
The document provides instructions for making cake using abstraction techniques for scripting and infrastructure. It discusses using Page Object Models and Capybara to abstract scripts for easier maintenance and faster creation. It also discusses using Selenium Grid, virtual machines, and third party services to abstract infrastructure for faster execution and easier maintenance. The document advocates for using these abstraction techniques to improve test automation.
But I Know What I Like: Abstraction is the Key to Automation
- 1. But I Know What I Like Abstraction is the Key to Automation (@dylanlacey -- Sauce Labs)
- 2. Preheat the oven to 375 Degrees Cream 250g of butter and 1 cup of sugar in a mixing bowl Mix in 2 cups of flour and 1 cup of milk, and combine Mix in 2 tsp of vanilla extract Pour into prepared tins and bake 1 hour • • • • • The Exhausting Reality
- 3. Set the Temperature Dial of the Oven to 375 Degrees Fahrenheit Place 250g of butter into the bowl of a mixer Place 1 cup of sugar into the same bowl Turn the mixer onto “7” Mix until the mixture is pale yellow Turn the Mixer down to “1” Add 2 cups of flour to the mixing bowl Add 1 cup of milk to the mixing bowl Allow the mixer to run until the mixture looks the same colour throughout Add 2tsp of Vanilla to the mixing bowl • • • • • • • • • • The Exhausting Reality
- 4. Set the Temperature Dial of the Oven to 375 Degrees Fahrenheit Place a bowl on a scale Turn the scale on by pressing the “on” button Use a knife to cut a stick of butter into 100 slices Place one slice into the bowl on the scale Read the Scale Continue to place slices of butter into the bowl until the scale reads ‘250g’ Open a container of sugar Get a dry cup measure from the drawer Scoop sugar from the container into the measuring cup until it reaches the top of the cup Draw the back of a knife across the surface of the measuring cup, allowing the excess sugar to fall back into the canister Place the measuring cup on the counter Take the mixer out of the cupboard Place the mixer on the bench Insert the square blade into the right hand blade hole on the mixer Insert the round blade into the left hand blade hole on the mixer The Exhausting Reality
- 6. Being Specific is Reliable
- 8. You Have Questions. Who is this loudmouth? Why am I even listening to him? What time is Morning Tea? Gee I love bacon. • • • •
- 9. Who is this guy?
- 10. What is he talking about? What is a Good Abstraction? How Abstraction makes for Automation Abstraction of Scripts Abstraction of Infrastructure • • • •
- 12. Good Abstractions Are: Not “Leaky” Understanding Enhancing (For our purposes) Shareable • • •
- 14. Set the Temperature Dial of the Oven to 375 Degrees Fahrenheit Place a bowl on a scale Turn the scale on by pressing the “on” button Use a knife to cut a stick of butter into 100 slices Place one slice into the bowl on the scale Read the Scale Continue to place slices of butter into the bowl until the scale reads ‘250g’ Open a container of sugar Get a dry cup measure from the drawer Scoop sugar from the container into the measuring cup until it reaches the top of the cup Draw the back of a knife across the surface of the measuring cup, allowing the excess sugar to fall back into the canister Place the measuring cup on the counter Take the mixer out of the cupboard Place the mixer on the bench Insert the square blade into the right hand blade hole on the mixer Insert the round blade into the left hand blade hole on the mixer The Exhausting Reality
- 16. Go to Chucks Drink a Lowenbrau Dunkel Take a shot of Tequila Drink a White Rabbit Pale Ale Take a sip of Natural Ice Grimace and Skoll The Rest Wash it out with a Stein of Wiheinstephaner Sleep in a doorway • • • • • • • •
- 17. Go to Chucks Drink a Lowenbrau Dunkel Take a shot of Tequila Drink a White Rabbit Pale Ale Take a sip of Natural Ice Grimace and Skoll The Rest Wash it out with a Stein of Wiheinstephaner Sleep in a doorway Experience Regret • • • • • • • • • Go to Chucks Drink 4 Beers Take a shot Sleep in a doorway Experience Regret • • • • •
- 21. Abstraction for Scripting (2ish minutes of PageObjects)
- 22. PageObjects are Abstract Methods for “Doin’ Stuff” on a page Should return Page Objects when giving new pages Encapsulate functionality and provide single-line access to tasks Ruby has SitePrism, page_objects_gem • • • •
- 23. Abstraction for Scripting (15 minutes of Capybara)
- 24. Go to Chucks Drink a Lowenbrau Dunkel Take a shot of Tequila Drink a White Rabbit Pale Ale Take a sip of Natural Ice Grimace and Skoll The Rest Wash it out with a Stein of Wiheinstephaner Sleep in a doorway Experience Regret • • • • • • • • • Go to Chucks Drink 4 Beers Take a shot Sleep in a doorway Experience Regret • • • • •
- 25. That’s what Capybara does. No, really.
- 26. Capybara for Everyone! Free, open source tool, widely used by the Ruby Community Able to run “headless” for JS-free testing Able to use Selenium to drive browsers • • •
- 27. Capybara Basics find_xpath ‘//table tr’ find_css ‘table.tr.beer’ find_field(‘mixer’).value find(#pantry).find(‘vermouth’) • • • •
- 28. Capybara Basics has_css? ‘#sobriety’ has_xpath? ‘//table tr’ has_content? ‘shaken’ • • •
- 29. Capybara Basics click_link ‘http://www.hendricksgin.com’ click_button ‘skoll’ click_on ‘blender’ • • •
- 30. Capybara exact & match Capybara.exact = true All future matches must be exact Default false -> Gin matches Gin and Tonic click_link(“jigger”, exact: true) Capybara.match = prefer_exact Sets strategy for multiple matches Default ‘smart’, also one, first, prefer_exact click_link(“shout”, match: one)
- 31. Capybara with Forms visit ‘/login’ fill_in ‘first_name’, :with => “Dylan” fill_in ‘last_name’, :with => “Lacey” select(‘Ruby’), :from => “Languages” check ‘Awesome’ attach_file(‘Beer’, ‘/Path/To/Beer’)
- 32. Scopes Save you from Selector Hell within ‘party’ do fill_in :pint, :with => “Kilkenny” end find(‘#barfridge’).click_link ‘open’
- 33. Human Readable?
- 34. Human Readable.
- 35. Abstraction for Scripting (15 minutes of Cucumber)
- 36. Write Tests In Engl“ish” (Technically it’s ‘gherkin’) Scenario: I am Sober Given I am on http://en.wikipedia.org/wiki/Main_Page When I enter "Old Fashioned" into the search box And I click the searchButton Then I should see "The Old Fashioned is an IBA Official Cocktail"
- 37. It’s not Magic Features in Gherkin are implemented by ‘step definitions’ You/r team write the step definitions Step definitions can be any code Step definitions can be many programming languages • • • •
- 38. That feature SUCKED Scenario: I am Sober Given I am on Wikipedia’s Main Page When I search for “Old Fashioned” Then I should see the “Old Fashioned” entry
- 39. Abstractions Allow Maintenance Given there is a user Jack And Jack owns a brewery And Jack has a paid account And Jack enters his password And Jack enters his username When he logs in Then I should take a shot BRITTLE
- 40. Abstractions Allow Maintenance When A Brewer Logs In Then I should take a shot AWESOME
- 41. Don’t Hide Too MuchBackgrounds => Steps run before each feature background: Given Jack is a Brewer And Jack has not paid his bill Scenario: Jack orders something delicious When Jack orders Woodford Reserve Then Jack sees “Shove Off” Scenario: Jack orders something gross When Jack orders Tequila Then Jack sees “This time, but pay up!”
- 42. Cucumber means making nice with Developers
- 43. Developer Facts: Developers get really involved in their work We’re sorry about the time we got mad at you for that one thing Developers want the same thing you want: Better Product Y’all are as smart as them, if not smarter (don’t tell them I said that) • • • •
- 44. Sell to Developers: You’re both focused on Customer Quality You both want to do excellent work “My Job is to make *YOU* look good” (Thanks, JeanAnn Harrison!) • • •
- 45. Test + Dev with Cuke Work together to build good tests Devs give step support and get tests and diagnostics Testers give expert advice and get flexible tools You can use different dev & test languages DANGER: Don’t let the devs make setup • • • • •
- 47. Selenium requires ALL THE THINGS Chrome, Safari, Opera, IE, Firefox MULTIPLIED BY Mac 10.8, Windows XP/7/8, Linux, iOS?! MULTIPLIED BY Versions! • • •
- 48. Make it someone else’s problem Selenium Grid Virtual Machines Third Party Services • • •
- 49. Selenium Grid CHEAP EASY FAST To Obtain To Operate To Distribute To Parallelize To Setup To Deploy (EC2) (Abstract Browsers)
- 50. I <3 VMs CHEAP EASY FAST To Run To Replicate To Share To Restore To Update To Backup To Duplicate To Setup To Destroy (Abstract Computers)
- 51. Why Not Both? Easy Parallelization Platforms you otherwise can’t support Significantly lower staff & infrastructure costs • • •
- 52. 3rd Party Services CHEAP EASY FAST Capacity Xtra Features (?) Maintenance Integration (?) Updating Team Work (?) Access To New Paralleling (?) CI (Abstract Solutions) (?) = Dependant on Provider?
- 53. Selenium Grid + 3rd Party VMs = Parallel Heaven
- 55. Appium (Abstract ...Devices?!) Native App Automation with Selenium Any Selenium Webdriver Tool No App modifications Totally Free and Open Source! (Mac client only ATM. Sorry >.>)
- 56. How to Appium Download and Install Appium from http://www.appium.io Run Appium with your App Write your tests using the Selenium Webdriver JSON Subset: https://github.com/appium/appium/wiki/JSON- Wire-Protocol:-Supported-Methods Run your tests • • • •
- 57. WAAAAA I Don’t Have a Mac! Contributes to the Appium Project Runs Appium in their Cloud Is working on Android support • • •
- 59. Resources Play with Sauce Labs: 1000 Manual Minutes 200 Automated Minutes Promo Code: TestLearnPlay (exp 3/14) Our Blog: http://www.sauceio.com • • • • •
- 60. Tools & Links Capybara: https://github.com/jnicklas/capybara Cucumber: http://cukes.info/ Appium: http://appium.io/ Supported methods: http://goo.gl/MiPcH Ruby examples: http://goo.gl/uQGh5 Sauce Labs Sign Up: http://goo.gl/uBTXX • • • • • •