Lean code kata en PHPMad
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The document outlines a series of iterations for a coding kata aimed at developing a checkout system for a supermarket, incorporating features such as product pricing, discounts, and CSV input. Each iteration builds upon the previous one, introducing new functionalities and tests for different cases related to purchasing apples, bananas, and cherries. The content emphasizes lean software development principles and encourages team collaboration and learning throughout the process.
Lean code kata en PHPMad
- 1. Luis Rovirosa luisrovirosa Lean Code Kata 23rd January 2019
- 2. About me
- 3. Lean Software Development Eliminate waste Amplify learning Decide as late as possible Deliver as fast as possible Empower the team Build integrity in See the whole
- 4. Client presentation A supermarket called: KWIK-E-MART
- 5. Iteration 0 - Setup 1. Choose a partner 2. Download the base setup from https://github.com/CodiumTeam/php-kata-bootstrap 3. Setup the development environment 4. Write a terminal application that accepts input and print the result in the screen
- 6. Iteration 1 - Start selling 1. Write a simple checkout cash register 2. We sell 3 products: “apple”, “banana” and “cherry” 3. We should accept one of these words per line 4. apple costs 1 €, banana 1,5 € and cherry 0,75 € 5. You should print the total in cents after each product Acceptance test: apple -> 100 banana -> 250 cherry -> 325
- 7. Iteration 2 - Cherry discount 1. We sell the same products with the same prices 2. You get a discount of 0.20 € when buying two cherries Acceptance test: cherry -> 75 cherry -> 130 cherry -> 205 cherry -> 260
- 8. Iteration 3 - CSV 1. Same prices and discounts as before 2. We can receive the shopping list from CSV Acceptance test: apple,banana,cherry,cherry -> 380
- 9. Iteration 3a - 2x1 bananas 1. Now you get a discount of 0.30 € when buying two cherries 2. Special offer for bananas: “Buy one and get one free” Acceptance test: cherry -> 75 cherry -> 120 banana -> 270 banana -> 270
- 10. Iteration 4 - More apples 1. Cherry discount returns to 0.20 € 2. We should support “manzana”, “apfel” and “apple” Acceptance test: cherry -> 75 manzana -> 175 cherry -> 230 banana -> 380 banana -> 380 apfel -> 480
- 11. Iteration 5 - Different apple prices 1. Beware: CSV format feature should be delivered in the next iteration 2. You get a discount of 1 € for every 3 “manzana” 3. You get a discount of 0.5 € for every 2 “apfel” Acceptance test: apfel -> 100 manzana -> 400 manzana -> 200 apfel -> 450 manzana -> 300 cherry -> 525 apple -> 400 cherry -> 580
- 12. Iteration 5a - Different apple prices 1. You get a discount of 1 € for every 3 “manzana” 2. You get a discount of 1 € for every 2 “apfel” Acceptance test: apfel -> 100 manzana -> 400 manzana -> 200 apfel -> 400 manzana -> 300 cherry -> 475 apple -> 400 cherry -> 530
- 13. Iteration 6 - CSV + discounts 1. We can receive the shopping list from CSV 2. You get a discount of 1.5 € for every 2 “apfel” 3. You get a discount of 1 € for every 4 “apple” 4. You save 2 € every 5 fruits Acceptance test 1: Acceptance test 2: apfel -> 100 apfel,manzana,manzana,apple,apfel -> 150 manzana -> 200 manzana -> 300 apfel -> 250 banana -> 200
- 14. What have you learnt? What did you enjoy the most? What would you change? Retrospective