PHP Day #25

TDD

@ dj1020(at)gmail.com

•

• KKBOX

• Laradiner

• http://blog.dj1020.net • dj1020(at)gmail.com

TDD

✦

✦

✦ (Spec)

✦ (RED) -> (GREEN) -> (REFACTOR)

TDD ✦

✦ API

✦ debug

✦

✦ Procedural Programming OOP

Kata ✦

✦

Code

✦

✦ TDD Kata TDD

Kata

Kata http://www.codingdojo.org/cgi-bin/index.pl?KataCatalogue

Kata ✦ ( )

✦

✦ ()

✦ TDD

✦ Editor

✦

Bowling Kata

✦ 10

10

Bowling

✦ 10 Strike 10

✦ 10 Spare10

✦ Strike Spare

Bowling Kata

✦

✦ BowlingGame Class methods

1. score()

2. roll($pins)

Let’s Do It

TDD $ git init BowlingKata

$ cd BowlingKata

$ composer init

$ composer require phpspec/phpspec

$ ./vendor/bin/phpspec desc Twk/BowlingGame

$ ./vendor/bin/phpspec run

First TestRED

Autoload composer.json

{ "require": { "phpspec/phpspec": "^2.5" }, "autoload" : { "psr-4" : { “Twk\\" : "src/Twk" } } }

$ composer dump

First TestGREEN

Test Case 1RED

20

Test Case 1REDGREEN

20

Test Case 2RED 1 20

Test Case 2REDGREEN 1 20

Test Case 2REDREFACTOR

DRY Extract Method

Test Case 2REDREFACTOR

design

Test Case 3RED

2, 8 Spare 2 10 + 2(bonus) + 2 = 14

Test Case 3REDGREEN

2, 8 Spare 2 10 + 2(bonus) + 2 = 14

Test Case 4RED

2, 8 Spare 2, 5 10 + 2(bonus) + 7 = 19

Oh Oh …(design flaw)

TDD ✦

✦

✦

✦

Test Case

Test Case 3RED

2, 8 Spare 2 10 + 2(bonus) + 2 = 14

Test Case 3REDGREEN

2, 8 Spare 2 10 + 2(bonus) + 2 = 14

Test Case 4REDGREEN

2, 8 Spare 2, 5 10 + 2(bonus) + 7 = 19

Test Case 4REDGREEN

Consolidate Duplicate Conditional Fragments

REFACTOR

Test Case 4REDGREEN

Rename Variables

REFACTOR

Test Case 4REDGREEN

Decompose Conditional Extract Method

REFACTOR

Test Case 4REDGREEN

Extract rollSpace() method

REFACTOR

Test Case 5RED

(Strike) 3, 4

10 + 3(bonus) + 4(bonus) + 7 = 24

Test Case 5RED

(Strike) 3, 4

10 + 3(bonus) + 4(bonus) + 7 = 24

GREEN

Test Case 5RED

Extract isStrike() method Extract rollStrike() method Extract spareBonus() method …

GREENREFACTOR

Test Case 6RED

Perfect Game! 12 300

GREEN

Test Case 7RED

9 Spare 5

… 267

GREEN

Test Case 8 …

Test Case

^o^

Q&A ?