BDD: Telling stories through code [For TechNotts]
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Stories? Scenarios? BDD? Are these just more words in the ever-growing list of jargon that developers have to know? Or are they something more important than new terms to memorise? In this session we'll look at how BDD fits into the software development work-flow, how to tell user stories through features, and what makes a good feature file. These techniques will help to ensure you're writing well designed and tested software that focuses on what the users really want from a system.
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BDD: Telling stories through code [For TechNotts]
- 1. @TheMattBrunt BEHAVIOUR DRIVEN DEVELOPMENT TELLING STORIES THROUGH CODE
- 3. @TheMattBrunt Senior Software Engineer at Viva IT @TheMattBrunt @PHPem
- 11. @TheMattBrunt
- 12. @TheMattBrunt
- 16. @TheMattBrunt
- 18. @TheMattBrunt
- 20. @TheMattBrunt
- 23. @TheMattBrunt COMPONENTS IN ISOLATION COMPONENTS WORKING TOGETHER END-TO-END TESTS
- 30. @TheMattBrunt ACCEPTANCE AGILE AUTOMATION BDD BEHAVIOUR BLACK-BOX BOUNDARIES CONTEXTS CRITERIA DDD DOUBLES DUMMIES EDGE-CASES END-TO-END FACTORIES FAKES FEATURES FIXTURES FUNCTIONAL INTEGRATION MOCKS OUTSIDE-IN SCENARIOS SPECS SPIES STUBS TDD UNITS
- 31. @TheMattBrunt
- 32. @TheMattBrunt WHAT DOES IT ALL MEAN?
- 36. @TheMattBrunt
- 40. @TheMattBrunt HOW DO THEY GET ALONG?
- 41. @TheMattBrunt BDD IS TDD ‘DONE RIGHT’ IT’S OFTEN SAID THAT…
- 42. @TheMattBrunt BDD IS A SECOND-GENERATION, OUTSIDE-IN, PULL- BASED, MULTIPLE-STAKEHOLDER, MULTIPLE- SCALE, HIGH-AUTOMATION, AGILE METHODOLOGY. DAN NORTH http://dannorth.net/whats-in-a-story/
- 47. @TheMattBrunt UBIQUITOUS LANGUAGE AN IMPORTANT PART OF BDD IS…
- 50. @TheMattBrunt HAVE CONVERSATIONS BEFORE YOU START WRITING CODE
- 51. @TheMattBrunt CAPTURE THE CONVERSATIONS SO YOU CAN USE THEM TO DRIVE DEVELOPMENT
- 52. @TheMattBrunt BDD IS THE ART OF USING EXAMPLES IN CONVERSATIONS TO ILLUSTRATE BEHAVIOUR LIZ KEOGH
- 53. @TheMattBrunt
- 56. @TheMattBrunt LET’S MEET THE CHARACTERS OF OUR STORY
- 70. @TheMattBrunt PICK THE RIGHT TOOL FOR THE JOB
- 71. @TheMattBrunt COMPONENTS IN ISOLATION COMPONENTS WORKING TOGETHER END-TO-END TESTS SPEC BDD
- 72. @TheMattBrunt COMPONENTS IN ISOLATION COMPONENTS WORKING TOGETHER END-TO-END TESTS SCENARIO BDD
- 73. @TheMattBrunt WE’LL BE LOOKING AT SCENARIO BDD
- 74. @TheMattBrunt SO, HOW DO WE WORK WITH THIS?
- 86. @TheMattBrunt Feature: As a [role] I want [feature] So that [benefit]
- 91. @TheMattBrunt
- 95. @TheMattBrunt
- 97. @TheMattBrunt GIVEN PUTS THE SYSTEM IN A KNOWN STATE
- 98. @TheMattBrunt WHEN DESCRIBE A KEY ACTION
- 99. @TheMattBrunt THEN DESCRIBE AN OBSERVABLE OUTCOME
- 100. @TheMattBrunt Given I have a “Large T-Shirt” product When I add a “Large T-Shirt” to my basket Then I should have a “Large T-Shirt” in my basket
- 102. @TheMattBrunt Given I have a “Large T-Shirt” product that costs £9.99 And I have an empty basket When I add a “Large T-Shirt” to my basket Then I should have a “Large T-Shirt” in my basket And the basket total should be £9.99
- 103. @TheMattBrunt STORY STRUCTURE: THE MAKEUP OF A FEATURE FILE
- 104. @TheMattBrunt Feature: As a customer I want to be able to add products to my basket So that I can have a gift for my partner Scenario: I can add a product to the basket Given I have a "Large T-Shirt" product When I add a “Large T-Shirt” to my basket Then I should have a “Large T-Shirt” in my basket FEATURE
- 105. @TheMattBrunt SCENARIO Feature: As a customer I want to be able to add products to my basket So that I can have a gift for my partner Scenario: I can add a product to the basket Given I have a "Large T-Shirt" product When I add a “Large T-Shirt” to my basket Then I should have a “Large T-Shirt” in my basket
- 106. @TheMattBrunt STEP Feature: As a customer I want to be able to add products to my basket So that I can have a gift for my partner Scenario: I can add a product to the basket Given I have a "Large T-Shirt" product When I add a “Large T-Shirt” to my basket Then I should have a “Large T-Shirt” in my basket
- 107. @TheMattBrunt THIS IS GREAT, BUT HOW DOES IT RELATE TO CODE?
- 109. @TheMattBrunt Given I have a “Large T-Shirt” product When I add that product to my basket Then I should see that product in my basket
- 110. @TheMattBrunt Given I have a “Large T-Shirt” product When I add that product to my basket Then I should see that product in my basket
- 111. @TheMattBrunt Given I have a “Large T-Shirt” product When I add that product to my basket Then I should see that product in my basket
- 112. @TheMattBrunt Given I have a “Large T-Shirt” product When I add that product to my basket Then I should see that product in my basket
- 113. @TheMattBrunt
- 115. @TheMattBrunt
- 117. @TheMattBrunt TAGS
- 119. @TheMattBrunt TEST DIFFERENT (OR THE SAME) FEATURES WITH DIFFERENT CONFIGURATIONS. SUITES ALLOW YOU TO…
- 120. @TheMattBrunt YOU CAN HAVE A UI SUITE THAT USES DIFFERENT STEP DEFINITIONS THAN A SERVICE LEVEL SUITE FOR EXAMPLE:
- 121. @TheMattBrunt THEY COULD ALSO USE DIFFERENT, OR EVEN THE SAME FEATURE FILES FOR EXAMPLE:
- 122. @TheMattBrunt YOU CAN USE THE SAME FEATURE FILE TO TEST DIFFERENT IMPLEMENTATIONS WITH SUITES AND TAGS…
- 123. @TheMattBrunt YOU CAN CHANGE IMPLEMENTATION WITHOUT CHANGING YOUR DOCUMENTED BUSINESS RULES WITH SUITES AND TAGS…
- 124. @TheMattBrunt THIS IS WHERE THE POWER LIES FOR ME…
- 125. @TheMattBrunt
- 126. @TheMattBrunt IMPLEMENTATION CHANGES MORE FREQUENTLY THAN BUSINESS RULES
- 128. @TheMattBrunt Scenario: I can add a product to my basket Given I am on the “/product/1” page When I press “Add to basket” Then I should see “Playstation 4” And I should see £250
- 129. @TheMattBrunt Scenario: I can add a single product to my basket Given I have a “Playstation 4” that costs £250 When I add the “Playstation 4” to my basket Then I should have 1 product in my basket And the basket total should be £250
- 130. @TheMattBrunt Scenario: I can add a product to my basket Given I am on the “/product/1” page When I press “Add to basket” Then I should see “Playstation 4” And I should see £250 WHAT HAPPENS WHEN THE UI CHANGES TO SAY “ADD TO CART”?
- 133. @TheMattBrunt
- 135. @TheMattBrunt RETURN US AN OBJECT LOOK FOR THIS
- 136. @TheMattBrunt
- 137. @TheMattBrunt HOOKS
- 138. @TheMattBrunt BEFORE & AFTER THE FOLLOWING: SUITES, FEATURES, SCENARIOS, STEPS HOOKS
- 141. @TheMattBrunt BEGINNING: HAVE A CONVERSATION, CAPTURE THAT CONVERSATION MIDDLE: AUTOMATE AND IMPLEMENT THAT CONVERSATION END: HAPPY STAKEHOLDERS AND WELL BUILT SOFTWARE
- 142. @TheMattBrunt STORIES TOLD BY REAL WORLD EXAMPLES. USER STORIES AS REQUIREMENTS. INVOLVE MULTIPLE STAKEHOLDERS. WRITE FEATURES BEFORE CODE. WRITE FEATURES WITHOUT IMPLEMENTATION.