Let's begin Behavior Driven Development using RSpec

2011.05.21http://www.flickr.com/photos/bruce_mcadam/3214482163/2011 5 22

2011 5 22

mrkn Ruby Rubyhttp://www.flickr.com/photos/koichiroo/5244581973/2011 5 22

20112010 5 3 22 1

http://www.flickr.com/photos/bruce_mcadam/3214482163/2011 5 22

2011.05.21http://www.flickr.com/photos/bruce_mcadam/3214482163/2011 5 22

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BDD Behavior Driven Development2011 5 22

TDD Test Driven Development2011 5 22

TDD BDD2011 5 22

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test-unit2011 5 22

module System class AgeCalculatorTest < Test::Unit::TestCase include RR::Adapters::TestUnit def setup @calc = AgeCalculator.with_birthday(1981, 7, 20) end def test_age_on assert_equal(29, @calc.age_on(2011, 7, 19)) assert_equal(30, @calc.age_on(2011, 7, 20)) end def test_age_today d, m, y = [*Time.now][3..5] stub(@calc).age_on @calc.age_on_today assert_received(@calc) {|c| c.age_on(y, m, d) } end end end2011 5 22

RSpec2011 5 22

module System describe AgeCalculator do context ‘with birthday 1981-07-20’ do subject { AgeCalculator.with_birthday(1981, 7, 20) } describe ‘#age_on’ do context ‘with 2011-07-19’ do specify ‘the age is 29’ do subject.age_on(2011, 7, 19).should be == 29 end end context ‘with 2011-07-20’ do specify ‘the age is 30’ do subject.age_on(2011, 7, 20).should be == 30 end end end describe ‘#age_on_today’ do it ‘calls age_on with year, month, and day on today’ do d, m, y = [*Time.now][3..5] subject.should_receive(:age_on).with(y, m, d) subject.age_on_today end end end end end2011 5 22

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TDD2011 5 22

!Test"#$% &()$* t-wada http://d.hatena.ne.jp/t-wada/ 2005+7,23- @J2EE./012103http://www.ne.jp/asahi/t/wada/articles/Test_in_TDD.pdf2011 5 22

!"#$%1 ! TDD&()*+,&-. ! "Test"/01213.45%&6784 " 9:;<=>?@A " 2B%"Test"CDE&-.FGHIJKLF " MNO5PQCRS ! ()TUVWXOYZ[4 " 9:#/ ]^#/ >?@A_`http://www.ne.jp/asahi/t/wada/articles/Test_in_TDD.pdf2011 5 22

!"#$%2 ! TDD%"Test"&(())%*+%,% " -./0(12%345 ! TDD%67&89:;<=/>?@ABCD :;EFG>/HIJKLhttp://www.ne.jp/asahi/t/wada/articles/Test_in_TDD.pdf2011 5 22

http://blogs.itmedia.co.jp/hiranabe/2005/08/sd4__c05e.html2011 5 22

http://blogs.itmedia.co.jp/hiranabe/2005/10/tdd__bdd__731d.html2011 5 22

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module System describe AgeCalculator do context ‘with birthday 1981-07-20’ do subject { AgeCalculator.with_birthday(1981, 7, 20) } describe ‘#age_on’ do context ‘with 2011-07-19’ do specify ‘the age is 29’ do subject.age_on(2011, 7, 19).should be == 29 end end context ‘with 2011-07-20’ do specify ‘the age is 30’ do subject.age_on(2011, 7, 20).should be == 30 end end end describe ‘#age_on_today’ do it ‘calls age_on with year, month, and day on today’ do d, m, y = [*Time.now][3..5] subject.should_receive(:age_on).with(y, m, d) subject.age_on_today end end end end end2011 5 22

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http://gihyo.jp/dev/serial/01/ruby/00392011 5 22

http://www.nicovideo.jp/watch/sm129758492011 5 22

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gem install rspec2011 5 22

rspec rspec-core rspec-expectations rspec-mocks2011 5 22

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gem install rspec2011 5 22

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require ‘spec/test/unit’2011 5 22

‘spec/test/unit’2011 5 22

http://www.slideshare.net/t_wada/sapporo-rubykaigi01-twada-lt-presentation2011 5 22

(a.k.a id:t-wada) Oct, 26, 2008 @SapporoRubyKaigi 01http://www.slideshare.net/t_wada/sapporo-rubykaigi01-twada-lt-presentation2011 5 22

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Photo by rla579: http://ﬂickr.com/photos/rla579/2482286520/2011 5 22

Working Effectively with Legacy tDiary Code using Cucumber and RSpec KAKUTANI Shintaro; Eiwa System Management,Inc.; Nihon Ruby-no-kaihttp://kakutani.com/articles/working_effectively_with_legacy_tdiary_code_using_cucumber_and_rspec.pdf2011 5 22

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FizzBuzzCounter2011 5 22

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# FizzBuzzCounter.new.each do |i| p i end #=> 1 # 2 # “Fizz” # 4 # “Buzz”2011 5 22

# fbc = FizzBuzzCounter.new p fbc.next #=> 1 p fbc.next #=> 2 p fbc.next #=> “Fizz” fbc.each {|i| break if i > 14 } p fbc.next #=> “FizzBuzz”2011 5 22

# Enumerable fbc = FizzBuzzCounter.new p fbc.take(3) #=> [1, 2, “Fizz”] p fbc.take(3) #=> [4, “Buzz”, “Fizz”]2011 5 22

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spec/ spec_helper.rb require ‘spec_helper’2011 5 22

Live Coding2011 5 22

RSpec Best Practicehttp://jp.rubyist.net/magazine/?0032-TranslationArticle2011 5 22

describe FizzBuzzCounter do describe ‘.filter’ do context ‘with 1’ do it ‘returns 1’ do FizzBuzzCounter. filter(1).should be == 1 end end end end2011 5 22

Observer Pattern2011 5 22

observers 1 * subject + change()2011 5 22

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Test Double2011 5 22

describe ConcreteObservable do describe ‘#change’ do it ‘calls its notify()’ do subject.should_receive(:notify) subject.change end end end2011 5 22

describe ConcreteObservable do describe ‘#change’ do subject { ConcreteObservable.new } it “calls observers’ update()” do observer = double(‘an observer’) observer.should_receive(:update) subject.change end end end2011 5 22

http://ironruby.codeplex.com/2011 5 22

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Let's begin Behavior Driven Development using RSpec

by Kenta Murata

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Let’s begin Behavior Driven Development using RSpec Presentation Transcript