Welcome to CAMDUG Dojo Day

1. Welcome to CAMDUG Dojo Day Thank you to our hosts, Granta Design (We’re hiring!) Sorry for the lack of internet

2. Welcome! • What is Software Craftsmanship? • What is Test-Driven Development (TDD)? Introduction

3. Pair Programming • Aim for one assertion per test • Give your tests fully descriptive names • TestThat_Foo_ShouldReturnBar_WhenBazIsFalse Method Name Condition Expectation Session Basics

4. Introduction to TDD Roman Numerals 2 paired iterations

5. Given a positive integer number determine its Roman numeral representation. • You cannot write numerals like IM for 999 • I can be subtracted from V and X only; X can be subtracted from L and C only; C can be subtracted from D and M only • V, L and D can never be subtracted • I = 1 • V = 5 • X = 10 • L = 50 • C = 100 • D = 500 • M = 1000 Roman Numerals Kata

6. Cementing your knowledge Minefield kata 2 paired iterations

7. Write a program to output a hint-field where each square is a * for a mine or the number of adjacent mine-squares if the square does not contain a mine. Minefield kata

8. Example input4 3*.....*..... • Example output*21112*10111 Minefield kata

9. Lunch Thanks to our sponsor Red Gate http://j.mp/rickyleeks

10. TDD in the real world Bank accounts 1 paired iteration

11. Write a system to model a bank account • Implement these three basic behaviours: • Deposit • Withdraw • Check balance Bank account

12. An objective work-out Bank account kata 1 paired iteration New rules http://j.mp/objectcalisthenics

13. One level of indentation per method • Don’t use the ELSE keyword • Wrap all primitives and Strings • First class collections • One dot per line • Don’t abbreviate • Keep all entities small • No classes with more than two instance variables • No getters/setters/properties Object calisthenics

14. Close Thank you for coming! Please join us at The Flying Pig