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Expanding Your .NET Testing Toolbox - GLUG NET
- 1. Matt Eland - @IntegerMan Expanding Your .NET Testing Toolbox
- 2. Who am I? Matt Eland - @IntegerMan
- 3. About Tech Elevator www.TechElevator.com • 14 Week Program • C# or Java • ASP .NET or Spring Boot • Databases and SQL • APIs and REST • HTML / CSS / JS / Vue.js • Testing, Security, and Agile
- 4. My Hobbies
- 5. About this Talk • Aim is to widen your exposure and spark new ideas • Focused on a wide variety of libraries • Will not get deep into any technology • Examples in C#, .NET Core, and XUnit @INTEGERMAN BUILD A SAFETY NET IMPROVE TESTABILITY IMPROVE YOUR TESTS REFACTOR THE CODE EXPAND YOUR TESTS
- 6. Sample Codebase: Resume Scoring Algorithm System Under Test Resume Score @INTEGERMAN
- 7. It’s a Legacy System! With Over 50k lines of code and 0 tests And we need you to add this new feature… @INTEGERMAN
- 8. WHAT DO YOU DO? @INTEGERMAN
- 9. Build your own Safety Net @INTEGERMAN
- 10. UNIT TESTING 101 Because unit tests should not be an endangered species. WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 11. What is a Unit Test? @INTEGERMAN
- 12. Test Driven Development (TDD) Green • Make the test pass Refactor • Clean up System Under Test Red • Write a failing test @INTEGERMAN
- 13. I can’t test my code because _______________ ! @INTEGERMAN
- 14. TAMING A BIG BALL OF MUD
- 15. TAMING A BIG BALL OF MUD BUILD A SAFETY NET IMPROVE TESTABILITY IMPROVE YOUR TESTS REFACTOR THE CODE EXPAND YOUR TESTS WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 16. BUILD A SAFETY NET If you don’t pin down current behavior, you won’t know when you change it WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 17. Testing Object State with Snapper GitHub Repo: https://theramis.github.io/Snapper/ @INTEGERMAN
- 18. Inspecting Web Traffic with Fiddler @INTEGERMAN
- 19. Postman Collections For API Testing API Testing Blog Post: https://blog.getpostman.com/2017/10/25/writing-tests-in-postman/ @INTEGERMAN
- 21. IMPROVE TESTABILITY If everything is tied together, all we’re doing is integration tests WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 24. Removing Database Dependencies Example @INTEGERMAN
- 25. Removing Database Dependencies Example @INTEGERMAN
- 26. INVERSION OF CONTROL (IOC) @INTEGERMAN
- 27. Inversion of Control with AutoFac @INTEGERMAN
- 28. Inversion of Control with AutoFac @INTEGERMAN
- 29. Moq to Simplify Fake Object Creation GitHub Repo: https://github.com/Moq/moq4 @INTEGERMAN
- 30. Moq to Simplify Fake Object Creation GitHub Repo: https://github.com/Moq/moq4 @INTEGERMAN
- 31. In Memory Tests with Entity Framework Core @INTEGERMAN
- 32. IMPROVE YOUR TESTS Before we scale our tests up, we need to make sure we’re happy with them WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 35. Refactor your Test Code @INTEGERMAN
- 36. REFACTOR THE CODE Improve your code without treating your users as canaries WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 39. Feature Flags Client New Routine Legacy Routine Use New Routine? New Routine @INTEGERMAN
- 40. Adding a Fallback Option with FeatureToggle @INTEGERMAN
- 41. Canary Testing Client New Routine Legacy Routine Is Beta User? @INTEGERMAN
- 42. Victimless Canary Testing with Scientist .NET Client New Routine Legacy Routine Scientist .NET GitHub Repo: https://GitHub.com/ScientistProject/Scientist.net @INTEGERMAN
- 43. Victimless Canary Testing with Scientist .NET GitHub Repo: https://GitHub.com/ScientistProject/Scientist.net Client New Routine Legacy Routine Scientist .NET Results Publisher @INTEGERMAN
- 44. Victimless Canary Testing with Scientist .NET Client New Routine Legacy Routine Scientist .NET GitHub Repo: https://GitHub.com/ScientistProject/Scientist.net @INTEGERMAN Results Publisher
- 45. Victimless Canary Testing with Scientist .NET Client New Routine GitHub Repo: https://GitHub.com/ScientistProject/Scientist.net @INTEGERMAN
- 46. Experiments with Scientist .NET @INTEGERMAN
- 47. Unit Testing with Scientist .NET Unit Test New Routine Legacy Routine Scientist .NET Results Publisher GitHub Repo: https://GitHub.com/ScientistProject/Scientist.net @INTEGERMAN
- 48. Experiments with Scientist .NET @INTEGERMAN
- 49. Publishing Results with Scientist .NET @INTEGERMAN
- 50. EXPAND THE TESTS “The unit tests must flow” - Nobody (that I know of) WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 52. Class Data Tests for Custom Data @INTEGERMAN
- 53. Class Data Tests for Custom Data @INTEGERMAN
- 54. Generating Test Data with Bogus @INTEGERMAN
- 55. Behavior Driven Development with SpecFlow @INTEGERMAN
- 57. TOOLS & PROCESSES Because there’s more to quality than just code WWW.KILLALLDEFECTS.COM MATT ELAND (@INTEGERMAN)
- 58. NCrunch These lines not covered by any tests Covered by passing tests Passing test, but takes longer to execute than other lines @INTEGERMAN
- 59. Code Reviews • All Code is Peer Reviewed before testing occurs • Reviews can be informal to extremely formal • Best results if • Authors review their own code before submitting • Reviewers make multiple “themed” passes • Tracked via a system @INTEGERMAN
- 60. Code Analysis with SonarQube / SonarCloud @INTEGERMAN Sonar Cloud: sonarcloud.io
- 61. Test Plans When handing a feature off to QA… Provide the test plan you followed as a rough draft Provide the list of unit tests added Include Test Plans in Code Review Helps find edge cases Helps others understand the change more Write Test Plans before coding Write unit tests around test plans Expand as needed after development work is done @INTEGERMAN
- 62. CONCLUSION •Snapper •Selenium •Fiddler •Postman Build a Safety Net •AutoFac •Moq •In Memory EF Improve Testability •Shouldly •Bogus •AutoFixture Improve your Tests •Scientist .NET •FeatureToggle Refactor the Code •SpecFlow •Data-Driven Tests Expand Your Tests Slides and code available at: https://GitHub.com/IntegerMan/SoftwareQualityTalk/ @INTEGERMAN
- 63. Ready to Learn? Ready to Hire? Rita Stall Campus Director, National Live Remote Rita@TechElevator.com
- 64. QUESTIONS? OTHER QUALITY RECIPES? @IntegerMan https://www.Linkedin.com/in/MattEland/ Slides and code available at: https://GitHub.com/IntegerMan/SoftwareQualityTalk/ WWW.KILLALLDEFECTS.C OM TWITTER: @INTEGERMAN MATT ELAND
Editor's Notes
- Intro to Application Architecture and Scalability In this talk we'll take a look at the various components that comprise modern web applications, explore performance and scalability, and give a general overview of advanced architectural concepts like caching, CQRS, domain driven design, database partitioning, NoSQL, microservices, and containerization. By the end of this talk you should have a greater high-level understanding of modern architectural concepts and how the pieces fit together, as well as more knowledge on where and when these approaches are appropriate to use.
- Yes, this is really my resume from last year. I was looking for an Angular team lead role and instead now manage a .NET services team. Life is funny.
- Show of hands: who writes unit tests on a somewhat regular basis?
- This is Xunit, other frameworks are Nunit and MSTest. All of which have similar syntax
- If you enjoyed this talk, please give me a mention on Twitter. I’m considering applying for CodeMash and every bit helps with selection.