Patterns of a “good” test automation framework
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This document discusses patterns for test automation frameworks. It begins by introducing common patterns like page objects, business layer, and factories. It then provides examples of page object and business layer page object patterns. The document also discusses test data patterns and different ways to specify test data and locators. Finally, it outlines advantages of using patterns like reduced complexity, reusability, and maintenance. The key message is that the best pattern depends on the specific test automation context.
Patterns of a “good” test automation framework
- 1. PATTERNS OF A “GOOD” TEST AUTOMATION FRAMEWORK! Anand Bagmar Software Quality Evangelist
- 2. ABOUT ME @BagmarAnand Blog - essenceoftesting about.me/anand.bagmar
- 3. WHAT DO YOU EXPECT FROM THIS SESSION?
- 4. TELL ME ... ¨ Any Managers in the room? ¨ Developers / Testers / Automation “folks” in the room? ¨ What toolset do you use for Automation? ¨ How many automated tests do you have? ¨ Have you heard the phrase - ”Test Automation code should be of Production Quality”? ¨ Do you believe it? ¨ Anyone in the room does not code / understand code? 4
- 5. Disclaimer
- 7. What is a Pattern?
- 10. Have you heard-of or used any Pattern(s) in Test Automation?
- 11. COMMON PATTERNS USED IN TEST AUTOMATION ¨ Page-Object ¨ Business Layer ¨ Singleton ¨ Composition ¨ Factory ¨ Builder
- 14. Code sample - #1
- 16. PAGE OBJECT PATTERN Model pages in code Simulates user actions One place change Reduces code duplication Snippets of page
- 18. Code sample - #2
- 19. AUTOMATION FRAMEWORK WITH PAGE OBJECTS
- 20. LIMITATIONS OF PAGE-OBJECT PATTERN ¨ Test intent gets polluted ¨ Duplication of Test intent & implementation ¨ Intent becomes Imperative ¨ Maintenance challenges ¨ Scaling challenges
- 23. Code sample - #3
- 24. ADVANTAGES OF BUSINESS-LAYER PAGE-OBJECT PATTERN ¨ Validate what is important - Business requirements ¨ Test Pyramid remains sane ¨ Abstraction layers allow separation-of-concerns ¨ Changes are isolated ¨ Maintenance & Scaling becomes ‘easier’
- 26. Why do we need to think differently about Test Data?
- 27. CRITERIA FOR TEST DATA ¨ Data is complex ¨ Needs to mimic “real” data ¨ Needs to be unique ¨ Data can be nested ¨ Though specified as static, may need to be Dynamic ¨ Data can be shared and reused
- 28. DIFFERENT WAYS TO SPECIFY TEST DATA ¨ In Test implementation ¨ In Test specification / intent ¨ In code … separate data structures / classes / etc. ¨ External files
- 29. TEST DATA SPECIFICATION EXAMPLES ¨ Excel ¨ CSV ¨ Property ¨ XML ¨ YAML ¨ Database ¨ Json
- 30. Code sample - #4
- 31. CRITERIA FOR SELECTION ¨ Easy to specify ¨ Easy to read and consume (by test framework) ¨ Ability to override specified data, easily ¨ Usable
- 32. TIPS FOR IMPLEMENTATION ¨ Consistent way to specify test data ¨ Read the data – as Business Entities ¨ Override as appropriate ¨ Create DSL to give meaning to data ¨ Use in test implementation ¨ Implement Test Data Entity Utilities – Build, Equals, Copy, Find, etc.
- 34. DIFFERENT WAYS TO SPECIFY ELEMENT LOCATORS ¨ In Page-Objects ¨ In separate files, per Page-Object ¨ In external files / locator files
- 35. Advantages of using Patterns for Test Automation
- 36. ADVANTAGES OF PATTERNS ¨ Well known, well understood ¨ Tried & tested solutions for common problems ¨ Reduces complexity ¨ Language neutral ¨ Aid in communication
- 37. ADVANTAGES OF PATTERNS IN TEST AUTOMATION Saves time & effort (eventually) Single ownership Test Automation Code is of Production Quality! Single point of change Easy to – - Implement - Maintain - Debug - Scale
- 38. WHICH IS THE “BEST” PATTERN TO USE ?
- 40. REFERENCES Page Objects – Google https://code.google.com/p/selenium/wiki/PageObjects Page Objects – Martin Fowler http://martinfowler.com/bliki/PageObject.html Perils of Page-Object Pattern – Anand Bagmar http://essenceoftesting.blogspot.in/2014/09/perils-of-page-object-pattern.html Test Design Consideration http://docs.seleniumhq.org/docs/06_test_design_considerations.jsp Sample Test Framework implementation https://github.com/anandbagmar/cuke-jvm-sample