Serenity BDD - from executable specifications to living documentation
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Learn how to write clean, clear, maintainable automated acceptance tests for both web applications and web services using Serenity BDD (http://serenity-bdd.info). Serenity BDD is an open source library that helps you write better, more effective automated acceptance tests, and use these acceptance tests to produce world-class test reports and living documentation.
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Serenity BDD - from executable specifications to living documentation
- 1. @wakaleo The evolution of automated testing practices Take me on a journey @wakaleo
- 2. @wakaleo John Ferguson Smart Introductions “I help teams of smart people learn to work together more efficiently, to deliver better software faster”
- 3. Alex Soto Bueno Introductions “I like helping open source projects, Java EE advocate and father of 2 girls”
- 4. @wakaleo Test Automation Do it well, or don’t do it at all
- 5. @wakaleo Narrative Coding Style Open-Closed Principle Single Responsibility Principle Separation of Concerns Software Engineering Principles can help you write more maintainable tests
- 6. @wakaleo Separation of Concerns - Layers Goals Tasks Actions What are you trying to achieve? What do you need to do to achieve this goal? What interactions with the system do you need for each task?
- 7. @wakaleo Separation of Concerns - Layers Scenario: Add a new todo entry on the todo home page Given I am on the Todo application home page When I enter 'Buy some milk' into the New Todo field And I press ENTER Then the todo list box should contain 'Buy some milk'
- 8. @wakaleo Separation of Concerns - Layers Scenario: Record a new todo action for future use Given I need to buy some milk When I add the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in my todo list
- 9. @wakaleo Feature documentationDetailed feedbackHigh level feedback Communication and documentation
- 10. @wakaleo Serenity BDD “Because life is too short to h a v e t o m a i n t a i n u g l y automated test suites”
- 11. @wakaleo Living documentation Strong Selenium WebDriver support JUnit, Cucumber or JBehave A layered approach Serenity BDD
- 12. @wakaleo The Serenity layered architecture Goals Tasks Interactions Tests or scenarios “Steps” Page Objects or other technical components
- 13. @wakaleo The Serenity layered architecture Feature: Add new todos James needs to be able to jot down actions he needs to do as he thinks of them Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list
- 14. @wakaleo The Serenity layered architecture Feature: Add new todos James needs to be able to jot down actions he needs to do as he thinks of them Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list A goal
- 15. @wakaleo The Serenity layered architecture Feature: Add new todos James needs to be able to jot down actions he needs to do as he thinks of them Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list A goal A task
- 16. @wakaleo The Serenity layered architecture Feature: Add new todos James needs to be able to jot down actions he needs to do as he thinks of them Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list A goal A task @Steps ATodoUser james; @When(“^(?:.*) (?:adds|has added) the todo action '(.*)'$") public void i_add_the_todo_action(String actionName) { james.adds_an_action_called(actionName); }
- 17. @wakaleo The Serenity layered architecture Feature: Add new todos James needs to be able to jot down actions he needs to do as he thinks of them Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list A goal A task @Steps ATodoUser james; @When(“^(?:.*) (?:adds|has added) the todo action '(.*)'$") public void i_add_the_todo_action(String actionName) { james.adds_an_action_called(actionName); } The task definition
- 18. @wakaleo The Serenity layered architecture Feature: Add new todos James needs to be able to jot down actions he needs to do as he thinks of them Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list A goal A task @Steps ATodoUser james; @When(“^(?:.*) (?:adds|has added) the todo action '(.*)'$") public void i_add_the_todo_action(String actionName) { james.adds_an_action_called(actionName); } The task definition TodoPage onTheTodoHomePage; @Step public void adds_an_action_called(String actionName) { onTheTodoHomePage.addAnActionCalled(actionName); }
- 19. @wakaleo The Serenity layered architecture Feature: Add new todos James needs to be able to jot down actions he needs to do as he thinks of them Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list A goal A task @Steps ATodoUser james; @When(“^(?:.*) (?:adds|has added) the todo action '(.*)'$") public void i_add_the_todo_action(String actionName) { james.adds_an_action_called(actionName); } The task definition TodoPage onTheTodoHomePage; @Step public void adds_an_action_called(String actionName) { onTheTodoHomePage.addAnActionCalled(actionName); } An interaction
- 20. @wakaleo Serenity for Living Documentation Feature: Add new todos I need to be able to jot down actions I need to do as fast as I think of them Scenario: Record a new todo action for future use Given I need to buy some milk When I add the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in my todo list
- 21. @wakaleo Serenity for Living Documentation Feature: Add new todos I need to be able to jot down actions I need to do as fast as I think of them Scenario: Record a new todo action for future use Given I need to buy some milk When I add the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in my todo list
- 23. @wakaleo Hard to apply to Single Page Apps Need modifications to extend Multiple Responsibilities Bloat Page Objects considered harmful
- 24. @wakaleo Introducing the Journey Pattern
- 25. @wakaleo Highly readable style Encourages reuse and maintainable code Small, reusable interaction components User-centric The Journey Pattern
- 26. @wakaleo The Journey Pattern - A User-Centric model Actors have goals I’d like to be able to recall all the things I need to do Meet James
- 27. @wakaleo The Journey Pattern - A User-Centric model Actors have abilities I can browse the web with my browser I can also query REST services
- 28. @wakaleo I’d like to be able to recall all the things I need to do The Journey Pattern - A User-Centric model Actors perform tasks I’ll add ‘Buy some milk’ to my todo list
- 29. @wakaleo I’d like to be able to recall all the things I need to do The Journey Pattern - A User-Centric model Actors may interact with the system to perform these tasks I’ll add ‘Buy some milk’ to my todo list Type ‘Buy the milk’ Press ‘ENTER’
- 30. @wakaleo The Journey Pattern in Serenity Actors have goals I’d like to be able to recall all the things I need to do
- 31. @wakaleo The Journey Pattern in Serenity Actors have goals Feature: Add new todos James would like to be able to recall all the things he needs to do Scenario: Record a new todo action for future use Given James needs to buy some milk When James adds the todo action 'Buy some milk' Then 'Buy some milk' should be recorded in his todo list I’d like to be able to recall all the things I need to do
- 32. @wakaleo A User-Centric model Actors have abilities I can browse the web with my browser Actor james = Actor.named(“James"); @Managed WebDriver hisBrowser; … james.can(BrowseTheWeb.with(hisBrowser));
- 33. @wakaleo A User-Centric model Actors perform tasks I’ll add ‘Buy some milk’ to my todo list @Steps AddItem addATodoItem; … james.attemptsTo(addATodoItem.called("Buy some milk"));
- 34. @wakaleo A User-Centric model Actors perform tasks I’ll add ‘Buy some milk’ to my todo list @Steps AddItem addATodoItem; … james.attemptsTo(addATodoItem.called("Buy some milk")); actor.attemptsTo( Enter.theValue(thingToDo).into(ToDoList.NEW_TODO_FIELD), Hit.the(RETURN).keyIn(ToDoList.NEW_TODO_FIELD) );
- 36. @wakaleo References • http://www.serenity-bdd.info • https://github.com/serenity-bdd/serenity-journey-demo • http://bit.ly/rg-journey
- 37. Alex Soto Bueno Questions? asotobu@gmail.com @alexsotob john.smart@wakaleo.com wakaleo http://www.wakaleo.com http://www.serenity-bdd.info