2012 regina TC - 103 quality driven
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2012 regina TC - 103 quality driven
- 1. AMIR BARYLKO QUALITY DRIVEN USING BDD + TDD Amir Barylko - Quality Driven MavenThought Inc.
- 2. TESTING Why Testing? Unit tests TDD Integration Tests Acceptance Tests Amir Barylko - Quality Driven MavenThought Inc.
- 3. REALITY CHECK • It is impossible to gather all the requirements at the beginning of a project. • Whatever requirements you do gather are guaranteed to change. • There will always be more to do than time and money will allow. Amir Barylko - Quality Driven MavenThought Inc.
- 4. NO MORE EXCUSES • It works on my computer! • It was like that when I got here! • The previous developer didn’t know XXXX! • We need a satellite connection in order to run it! • We can’t reproduce the error! • We can’t test that! Amir Barylko - Quality Driven MavenThought Inc.
- 5. UNIT TESTING • Test for a class or method • No dependencies • Should use mocking • Small • Clear Amir Barylko - Quality Driven MavenThought Inc.
- 6. TDD • First write a test that fails (RED) • Write code to make it pass (GREEN) • Check if code can be improved (REFACTOR) • Start again until it’s done Amir Barylko - Quality Driven MavenThought Inc.
- 7. BENEFITS OF TDD • Prove that your code • Regression tests as works byproduct • Avoid waste • Makechanges with (debugging) confidence • Increment code quality • Bring back the joy of coding! • Better design Amir Barylko - Quality Driven MavenThought Inc.
- 8. WHEN TDD IS NOT ENOUGH •Legacy Code •Refactoring is not viable •Verify functionality across layers •Validate feature end to end Amir Barylko - Quality Driven MavenThought Inc.
- 9. INTEGRATION TEST •More than one class •Still some parts can be mocked •Partial functionality of subsystem Amir Barylko - Quality Driven MavenThought Inc.
- 10. ACCEPTANCE TEST •Black box testing •Crossing all layers •Should cover all scenarios •External subsystems may be mocked Amir Barylko - Quality Driven MavenThought Inc.
- 11. SOFTWARE QUALITY What is it? Low Quality Classic QA Amir Barylko - Quality Driven MavenThought Inc.
- 12. WHAT DOES IT MEAN? • Better code? • Faster delivery? • Less bugs? • Make sure we deliver the right thing? • Better Processes? Amir Barylko - Quality Driven MavenThought Inc.
- 13. LOW QUALITY • Lack of testing • Lack of communication • Lack of metrics • Lack of traceability • Wrong tools Amir Barylko - Quality Driven MavenThought Inc.
- 14. CLASSIC QA • Team separated from developments • Follow scripts or requirements • Done after the feature is implemented • May have more than one project in the queue • Feedback cycle may take weeks • Manual (no automation) Amir Barylko - Quality Driven MavenThought Inc.
- 15. DOES IT WORK? •Your opinion here...... Amir Barylko - Quality Driven MavenThought Inc.
- 16. A NEW CONCEPT Feature First Benefits Outside In Approach Runnable features Roles Amir Barylko - Quality Driven MavenThought Inc.
- 17. FEATURE FIRST • Write the feature before implementation • Developers will implement feature using TDD • QA will validate against feature • Repeat until all features are done Amir Barylko - Quality Driven MavenThought Inc.
- 18. BENEFITS • Focus on the feature • Testing all the way • Traceability • Quality every step of the process Amir Barylko - Quality Driven MavenThought Inc.
- 19. OUTSIDE IN APPROACH Red BDD Red Refactor Refactor TDD Green Green Amir Barylko - Quality Driven MavenThought Inc.
- 20. RUNNABLE FEATURES • Features describe functionality • What if we could run them? • Then features would validate functionality • Becoming live documentation Amir Barylko - Quality Driven MavenThought Inc.
- 21. ROLES • Who writes the feature? • Who implements the feature? • Who validates the feature? • What’s the role of QA, PM, etc? Amir Barylko - Quality Driven MavenThought Inc.
- 22. WRITING FEATURES Gherkin Syntax Feature Scenario Steps Amir Barylko - Quality Driven MavenThought Inc.
- 23. GHERKIN DSL • Business readable DSL • Flush out requirements • Documentation • Automated testing • Used by Cucumber, SpecFlow, jBehave Amir Barylko - Quality Driven MavenThought Inc.
- 24. SYNTAX Feature: Listing movies As a User I want to list movies So I can see the contents of the library Scenario: Browse available movies Given I have the following movies When I go to "Movies" Then I should see in the listing Amir Barylko - Quality Driven MavenThought Inc.
- 25. FEATURES • Keyword Feature • The rest is free text Feature: Listing movies As a User I want to list movies So I can see the contents of the library Amir Barylko - Quality Driven MavenThought Inc.
- 26. SCENARIOS • Each feature file can have multiple scenarios • Each scenario can contain multiple steps • Keywords: • Given When Then • And Not But Amir Barylko - Quality Driven MavenThought Inc.
- 27. STEPS Scenario: Browse available movies Given I have some movies When I go to the listing page Then I should see all the movies Amir Barylko - Quality Driven MavenThought Inc.
- 28. DEMO Amir Barylko - Quality Driven MavenThought Inc.
- 29. QUESTIONS? Amir Barylko - Quality Driven MavenThought Inc.