9 ways to test your spaghetti code

From Nordic Testing Days 2019

Transcript

1. Nordic Testing Days
   9 ways to test your
   spaghetti code
   Mads Opheim
   @MadsOpheim
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2. Tere!
   I’m Mads.
   I’m a developer
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3. Spaghetti
   code?
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4. The 9 ways
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5. 5
   1. Test all
   or
   Test small
   

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6. 6
   2. Set your
   dependencies
   

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8. Singletons
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9. 3. Package-protect
   problematic parts
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10. Tools for your toolbox
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11. 4. Do simple refactorings to
    get your code under test
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12. In general: untangling
    and looking at one part at a
    time
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13. You’re not as smart
    as you think you are
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14. Well-designed code
    is testable code
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15. 15
    5. Help your team
    

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16. You’ll forget things
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17. 6. Run your tests - and care
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18. 7. Feature toggles
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19. 8. One mile at a time
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20. Refactor in separate
    commits
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21. 9. Test-driven
    development
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22. Test-driven
    spaghetti
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23. TDD on legacy code
    in practice
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24. Tip 10, 11 and onwards
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25. 25
    The Deadline For Kunngjøring
    Is Four Weeks()
    

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26. 26
    Properties For Namsmann
    Mainly Follow The Same
    Rules as Hovedstevnevitne()
    

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27. You’ll do stupid things -
    and that’s ok
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28. Be consistent
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29. Give me
    more
    @lisacrispin,
    @lisihocke,
    @techgirl1908,
    @maaretp...
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30. Key takeaways
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    1. Good code design improves testability
    2. TDD on spaghetti code: TDD + test
    spaghetti code
    3. Write tests for you legacy code -
    you can do it!
    

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31. Thank you!
    @MadsOpheim
    mads.opheim@computas.com
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