This document contains notes from a presentation on refactoring code. It includes links to resources on refactoring katas, test-driven development, and notation for commits. The presentation discusses writing tests, lifting conditionals during refactoring, splitting code into classes, adding new functionality, and resources for learning more about refactoring and advanced testing techniques.

1. @LlewellynFalco 1
Prep
Open:
https://github.com/emilybache/GildedRose-Refactoring-Kata/blob/master/GildedRoseRequirements.txt
https://github.com/approvals/ApprovalTests.Java
https://github.com/InnovatingTeams/provable-refactorings/blob/master/recipes/micro-step-helpers/add-
explicit-return/cpp.md
https://github.com/RefactoringCombos/ArlosCommitNotation
Git
git rev-list --count master..head

2. @LlewellynFalco
Cutting Code Quickly

3. @LlewellynFalco 3
github.com/emilybache/GildedRose-Refactoring-Kata

4. @LlewellynFalco
Feature Request:
"Conjured" items degrade in Quality
twice as fast as normal items
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5. @LlewellynFalco
“Give me 6 hours to chop down
a tree and I will spend the
first 4 sharpening the axe.
- Abraham Lincoln
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6. @LlewellynFalco
“Make the change easy,
Then make the easy change.
Warning: the first part might be hard”
- Kent beck
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7. @LlewellynFalco 7
The difference between a good programmer
& a great programmer is that the great
programmers are extremely lazy

8. @LlewellynFalco
prefix meaning
F Feature
B Bug
t Test only
r Provable Refactor
a Automated
!!! non-provable refactoring

9. @LlewellynFalco
1.
Test
Let’s write a few hundred tests
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10. @LlewellynFalco
2.
Lift-Up Conditional
Refactoring
Lift and Separate…
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11. @LlewellynFalco
3.
Split to Classes
To each there own…
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12. @LlewellynFalco
4.
Add New functionality
Make it easy, do the easy thing
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13. @LlewellynFalco
RESOURCES
Gilded Rose: github.com/emilybache/GildedRose-Refactoring-Kata
ApprovalTests: github.com/Approvals
Arlo’s Git Notation: github.com/RefactoringCombos
Video of Emily Bache:
www.praqma.com/stories/advanced-testing-refactoring-techniques
These slides:
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14. @LlewellynFalco
Thanks!
ANY QUESTIONS?
You can find me at:
@LlewellynFalco
llewellynfalco.blogspot.com
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LinkedIn & Twitter
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15. @LlewellynFalco
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