TDD sons

A presentation given for the Torino Coding Society meeting. We talked of test by try, unit testing, test driven development and, finally, behaviour driven development. Thank you @welaika!

Transcript

1. TDD sons or: how I discovered tests, loved them since the first moment and changed the way I write code every day. lunedì 18 novembre 13
2. _ I am Silvano Stralla @sistrall _ I—almost—write code for living, almost ruby code lunedì 18 novembre 13
3. hands on the code lunedì 18 novembre 13
4. hands on the ruby code lunedì 18 novembre 13
5. # https://github.com/jpfuentes2/a-letter-to-Augusta require "./love" a_letter to: Augusta do twas(only: 16.months.ago) { The::Universe << You.to(OurFamily) } life.has :been => %w(i n c r e d i b l y).zip(*"wonderful!").ever_since We::Wish.we_could { experience these_moments: over & over } You.will always_be: Loved, and: Cherished until Infinity.ends do; Forever.(); end end # returns “Augusta, we <3 you!” lunedì 18 novembre 13
6. _ what we’ll do tonight _ code and try _ code and test _ test and code _ invent and code lunedì 18 novembre 13
7. _ unit testing _ test driven development _ behaviour driven development lunedì 18 novembre 13
8. _ require 'test/unit' lunedì 18 novembre 13
9. _ gem "rspec" _ describe Number, "#valid?" do it "should validate" do expect(Number.new('3935664964')) .to be_valid end end _ rspec ruby_file.rb lunedì 18 novembre 13
10. _ gem "cucumber" _ cucumber lunedì 18 novembre 13
11. red green refactor lunedì 18 novembre 13
12. _ refactoring is the key lunedì 18 novembre 13
13. _ writing tests before code prevents holes in the tests lunedì 18 novembre 13
14. _ interaction with other so ware lunedì 18 novembre 13
15. _ stubs, mock, actually doubles lunedì 18 novembre 13
16. _ outside-in approach _ tests as a safety net _ tests for legacy code lunedì 18 novembre 13
17. _ tests won’t make you a be er dev but they’ll make you more confident lunedì 18 novembre 13
18. _ then you’ll find the time to become a be er dev lunedì 18 novembre 13