My Reading Specs - Refactoring Patterns for Gherkin Scenarios
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Written specs are easy to read but hard to write. Even with an understanding of the principles and tips for writing good Gherkin, it can be very hard to keep scenarios clean, informative and readable. These slides are from a workshop given by John Ferguson Smart and Tom Roden, where they take a practical look at some real-world Gherkin scenarios, investigate what makes them smell and practise how to improve them. Discover some powerful refactoring patterns to help make your own specs a joy to read.
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My Reading Specs - Refactoring Patterns for Gherkin Scenarios
- 1. The BDD Way Speculate1 Testers Developers Business Illustrate2 Product Backlog, Goals, Capabilities and Features Formulate3 User Stories with acceptance criteria Automate4 Implement and verify Developers and Testers Executable Specifications Demonstrate5 Testers Developers Business Passing Automated Acceptance Tests Validate6 Customers or Users Potentially shippable product increment Learning and Feedback Documentation Automated Tests Business Readable Specification Gherkin
- 2. 3 Artefacts in 1 Documentation Automated Tests Business Readable Specification Gherkin
- 3. Heuristics for great “Reading Specs” Asserts the behaviour, doesn’t list instructions to the reader. Uses domain concepts and language, not technical implementation. Every reader should easily understand its purpose and dialogue. When it fails, you quickly know why and trust the outcome. Concise, focused with no unnecessary verbiage. Declarative, not imperative Business behaviour, not implementati on Easy to understand Fails purposefully and informatively Essential and concise, not incidental and verbose
- 4. A selection of our favorites Gherkin Refactoring Patterns
- 6. De-UI-ication 1. Identify the business intent behind the clicks and selects 2. Group UI interactions into business tasks 3. Replace references to the user interface by descriptions of the user’s intent
- 7. Descripting 1. Clarify vague or imprecise checks 2. Articulate the real scenario goals in the form of clear and testable outcomes 3. Focus each scenario on a single rule
- 8. Distilling 1. Remove irrelevant detail 2. Highlight the essential information 3. Connect the outcomes directly to the inputs and actions
- 9. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they navigate to the Tickets tab And they click “New” And they select “New Ticket” And they fill in the mandatory fields And they click on “Create” Then check that the ticket is correctly displayed And the ticket status dropdown should show “Open” And then they click Logout And the window closes
- 10. Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they navigate to the Tickets tab And they click “New” And they select “New Ticket” And they fill in the mandatory fields And they click on “Create” Then check that the ticket is correctly displayed And the ticket status dropdown should show “Open” And then they click Logout And the window closes De-UI-ication 1. Identify the business intent behind the clicks and selects 2. Group UI interactions into business tasks 3. Replace references to the user interface by descriptions of the user’s intent Descripting 1. Clarify vague or imprecise checks 2. Articulate the real scenario goals in the form of clear and testable outcomes 3. Focus each scenario on a single rule Distilling 1. Remove irrelevant detail 2. Highlight the essential information 3. Connect the outcomes directly to the inputs and actions
- 11. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they navigate to the Tickets tab And they click “New” And they select “New Ticket” And they fill in the mandatory fields And they click on “Create” Then check that the ticket is correctly displayed And the ticket status dropdown should show “Open” And then they click Logout And the window closes De-UI-ication
- 12. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they navigate to the Tickets tab And they click “New” And they select “New Ticket” And they fill in the mandatory fields And they click on “Create” Then check that the ticket is correctly displayed And the ticket status dropdown should show “Open” And then they click Logout And the window closes De-UI-ication
- 13. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then check that the ticket is correctly displayed And the ticket status dropdown should show “Open” And then they click Logout And the window closes De-UI-ication
- 14. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then check that the ticket is correctly displayed And the ticket status dropdown should show “Open” And then they click Logout And the window closes De-UI-ication
- 15. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then check that the ticket is correctly displayed And the ticket should be “Open” De-UI-ication
- 16. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then check that the ticket is correctly displayed And the ticket should be “Open” Descripting
- 17. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then check that the ticket is correctly displayed And the ticket should be “Open” Descripting
- 18. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then a new ticket should be raised And the ticket should be “Open” Descripting
- 19. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Descripting
- 20. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Descripting
- 21. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given a User Logs in as “SupportUser123” And a password of “Passw0rd” And verify they are a Support User When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Descripting
- 22. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given Sasha the Support User logs in as “SupportUser123” And a password of “Passw0rd” When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Descripting
- 23. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given Sasha the Support User logs in as “SupportUser123” And a password of “Passw0rd” When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Distilling
- 24. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given Sasha the Support User logs in as “SupportUser123” And a password of “Passw0rd” When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Distilling
- 25. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given Sasha the Support User is logged in When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Distilling
- 26. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given Sasha the Support User is logged in When they create a new ticket with valid details Then a new ticket should be raised with status “Open” Distilling
- 27. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given Sasha makes a new ticket request with valid details | User Name | Nature of Problem | | Forgetful Fred | Account locked | When she creates a new ticket Then a new ticket should be raised with status “Open” Distilling
- 28. Gherkin Refactoring in Action Scenario: Creating a new help desk ticket Given Sasha makes a new ticket request with valid details | User Name | Nature of Problem | | Forgetful Fred | Account locked | When she creates a new ticket Then a new ticket should be raised with status “Open” Distilling
- 29. Feature: Expense Claims End to End Test New expense claims should be created in the Submitted state and be appear in the "New Claims" screen. Scenario: Submitting an expense claim Given I log in as: sam.user@db.com And I click on the "My Expenses " tab When I click on "New Claim" And I enter the description ‘Hotel expenses’ And I enter "25-04-2019" in the Date field And I enter "153587-ZX" in the Project Code And I enter "53" in the Expense Category Code And I upload a PDF receipt for the hotel And I enter 3 in the nights field And I enter $600 in the accommodation field And I enter $120 in the food field And I upload a PDF receipt for the taxi And I enter $45 in the transport field And I click on ‘Submit’ Then verify that the expense claim is created correctly with the correct totals And verify that the appropriate users can see the new claim And verify that the approver can see whether the claim exceeds daily thresholds De-UI-ication Descripting Distilling
- 30. Feature: Submitting expense claims Scenario: A valid expense claim needs a valid date, project code and positive amount Given Tasha the Traveller submits a claim for the following expenses | Expense Type | Expense Date | Project Code | Amount | | Accommodation | 25-09-2019 | Apollo-57 | $600 | | Food | 25-09-2019 | Apollo-57 | $120 | | Transport | 25-09-2019 | Apollo-57 | $45 | When Tasha submits the claim Then it should be successfully submitted with a total of $765 And a it should have status of “submitted” De-UI-ication Descripting Distilling
- 31. John Ferguson Smart @wakaleo johnfergusonsmart.com Tom Roden @tommroden neuri.com Our Reading Specs
Editor's Notes
- Effectiveness: To apply the minimal effort necessary to achieve the desired result Autonomous kindergarteners and Lord of the Flies - Is effectiveness alone enough to make a high performance team?
- Effectiveness: To apply the minimal effort necessary to achieve the desired result Autonomous kindergarteners and Lord of the Flies - Is effectiveness alone enough to make a high performance team?