It's Testing, Jim, but not as we know it - BDD for Testers
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Behaviour Driven Development is an increasingly popular Agile practice that turns testing on its head, and involves a major shift in the role testers play in a project. Although popularly associated with automated acceptance testing and tools like Cucumber, BDD actually has much broader applications. In this talk, we will look at how Behaviour Driven Development radically changes the traditional tester role in Agile projects, and empowers them to tangibly contribute much more to the successful outcomes of the project. We will see how collaboratively discussing and defining acceptance criteria help reduce assumptions and errors in the early phases of the project, and help ensure that the features being built are well understood, testable, and valuable to the business. We will look at ways to write more effective, easier to maintain automated acceptance criteria, that free testers to do more productive testing tasks such as exploratory testing. And we will see how automated and manual acceptance test reporting can be combined to provide valuable progress, product documentation and release preparation reporting.
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It's Testing, Jim, but not as we know it - BDD for Testers
- 1. Behaviour Driven Development “It’s Testing, Jim, but not as we know it!”
- 2. John Ferguson Smart Consultant Trainer Mentor Author Speaker Coder WelcomeWelcome John Ferguson Smart Consultant Trainer Mentor Author Speaker Coder
- 3. Behaviour Driven Development You keep using that term I do not think it means what you think it means
- 4. You may have heard of it A test automation tool? Behaviour Driven Development
- 5. You may have heard of it A different way to write user stories? Behaviour Driven Development Feature: Search by keyword In order for buyers to find what they are looking for more efficiently As a seller I want buyers to be able to search for articles by keywords Scenario: Search for articles by keyword Given I want to buy a wool scarf When I search for 'wool' Then I should see only articles related to 'wool' Scenario: Search by shop name Given I want to see articles from a particular shop When I search by shop for 'docksmith' Then I should find 1 shop called 'docksmith'
- 6. You may have heard of it Behaviour Driven Development A way to collaborate better?
- 7. You may have heard of it Behaviour Driven Development a shared understanding software that matters Using examples
- 8. You may have heard of it Behaviour Driven Development Hunting out value Automated Acceptance Criteria API and code design boration Building the software right Building the right software Living Documentation BDD
- 9. The business owner tells the business analyst what he wants 1 2 The business analyst writes a requirements document 3 The developer translates the requirements into software 4 The tester translates the requirements into test cases 5 The technical writer translates the software into functional and technical documentation A traditional development process BDD in a nutshell
- 10. The business owner and the business analyst have a conversation about what he needs. 1 2 3 4 The tester uses these scenarios as the basis for her tests 5 The automated tests provide feedback on progress and help document the application The business analyst, the developer and the tester elaborate the requirements together. The scenarios guide the developer and act as automated tests They define requirements as structured, English- language format "scenarios" A BDD development process BDD in a nutshellBDD in a nutshellBDD in a nutshell
- 11. The business owner and the business analyst have a conversation about what he needs. 1 2 3 4 The tester uses these scenarios as the basis for her tests 5 The automated tests provide feedback on progress and help document the application The business analyst, the developer and the tester elaborate the requirements together. The scenarios guide the developer and act as automated tests They define requirements as structured, English- language format "scenarios" • Specifications are elaborated collaboratively • Specifications use a common language • Executable specifications provide fast BDD in a nutshellBDD in a nutshell
- 12. BDD in a nutshellBDD is about collaboration “Having the conversa/on is more important than recording the conversa/on is more important than automa/ng the conversa/on” -‐ Liz Keogh
- 13. BDD in a nutshellBDD is about collaboration Story bug reports Working code boring manual testing WASTE BA Developer Tester Many teams build features like this…
- 14. BDD in a nutshellBDD is about collaboration Working code and Working Automated Acceptance Tests Exploratory testing, usability testing... Shared understanding Story Examples Automated acceptance criteria BDD teams focus on building a shared understanding
- 15. BDD in a nutshellBDD is about collaboration BDD teams focus on building a shared understanding
- 16. BDD in a nutshellA typical BDD workflow
- 17. BDD in a nutshellA typical BDD workflow Frequent Flyer Application Goal: Encourage travellers to fly with Flying High airlines more often by allowing them to cumulate Frequent Flyer points that they can spend on cheaper flights. Goals Earning points from flights Capabilities Earning points from spending with partners Viewing points earned Spending points on bookings FeaturesViewing current points balance View points needed to achieve the next status level Calculating points needed for a given destination
- 18. BDD in a nutshellA typical BDD workflow Calculating points needed for a given destination As a traveller I want to know how many points I need to go to a given destination So that I can plan my next trip with Flying High Airlines Feature Acceptance Criteria - Need 2 points per km - Members can calculate points needed on their account home page Acceptance Criteria Automated Acceptance Criteria
- 19. BDD in a nutshellA typical BDD workflow Automated Acceptance Criteria Automated Acceptance Tests
- 20. BDD in a nutshellA typical BDD workflow Automated Acceptance Tests Application Code Low level specifications
- 21. BDD in a nutshellBDD Living Documentation Meaningful feedback on what requirements have (and have not) been delivered What about the reports?
- 22. BDD in a nutshellBDD Living Documentation Descriptions of each feature with an example of how it behaves What about the reports?
- 23. BDD in a nutshellBDD Living Documentation What about the reports? …complete with illustrations
- 24. BDD in a nutshellBDD Living Documentation What about the reports? Verify how each feature was tested
- 25. BDD in a nutshellBDD Living Documentation What about the reports? … and document releases
- 26. BDD Adoption Challenges “There might be more to this than we thought”
- 27. BDD in a nutshell5 BDD Adoption Gotchas 1 2 3 4 The business analyst writes the scenarios and then gives them to the other team members. 1) “I did it my way”
- 28. BDD in a nutshell5 BDD Adoption Gotchas 1 2 3 4 The tester writes the scenarios at the end to implement an automated test suite. 2) “The Tester’s Tool”
- 29. BDD in a nutshell5 BDD Adoption Gotchas 1 2 3 4 5 The “Three Amigos” sessions don’t result in usable scenarios, so the developer invents them 3) “The 3 amigos coffee club”
- 30. BDD in a nutshell5 BDD Adoption Gotchas 1 2 3 4 5 The scenarios are too UI-centric or detail-focused, and neglect to express the core business value. 4) “The forest and the trees”
- 31. BDD in a nutshell5 BDD Adoption Gotchas 5) “The BDD Test Scribe” 1 2 3 4 The automated tester does not collaborate with the developers, resulting in slow and fragile acceptance tests
- 32. BDD in a nutshell5 BDD Tips for Testers 1) Team up with the developers
- 33. BDD in a nutshell5 BDD Tips for Testers Business Rules Business Flow Page/Component interactions Page/Component details 2) Use layers
- 34. BDD in a nutshell5 BDD Tips for Testers 3)Prefer non-UI tests where possible
- 35. BDD in a nutshell5 BDD Tips for Testers 4) Treat your test code like production code
- 36. BDD in a nutshell5 BDD Tips for Testers 5) Know when not to automate This slide is left intentionally blank
- 37. 3 BDD Tester Wins Deeper participation in feature delivery
- 38. 3 BDD Tester Wins Higher quality automated tests
- 39. 3 BDD Tester Wins More time for high-quality manual testing
- 40. Any questions? “It’s Testing, Jim, but not as we know it!”
- 41. John Ferguson Smart Consultant Trainer Mentor Author Speaker Coder WelcomeWelcome John Ferguson Smart Consultant Trainer Mentor Author Speaker Coder