Test Commit Revert / GildedRoseKata / ApprovalTests / Combination Tests / Lift Conditional / Provable Refactoring

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
4

5. @LlewellynFalco
“Give me 6 hours to chop down
a tree and I will spend the
first 4 sharpening the axe.
- Abraham Lincoln
5

6. @LlewellynFalco
“Make the change easy,
Then make the easy change.
Warning: the first part might be hard”
- Kent beck
6

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
9

10. @LlewellynFalco
2.
Lift-Up Conditional
Refactoring
Lift and Separate…
10

11. @LlewellynFalco
3.
Split to Classes
To each there own…
11

12. @LlewellynFalco
4.
Add New functionality
Make it easy, do the easy thing
12

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:
13

14. @LlewellynFalco
Thanks!
ANY QUESTIONS?
You can find me at:
@LlewellynFalco
llewellynfalco.blogspot.com
14
Please connect on
LinkedIn & Twitter
Presentation template by SlidesCarnival

15. @LlewellynFalco
SlidesCarnival icons are editable
shapes.
This means that you can:
● Resize them without losing
quality.
● Change fill color and
opacity.
Isn’t that nice? :)
Examples:
15