Rack::ClientSpec

Rack::ClientSpec can test your client behavior
社内勉強会用資料

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1. Rack::ClientSpec @harukasan / ͸Δ͔͞Μ
2. ωλͳͷͰਅʹड͚ͯ͸͍͚ͳ͍
3. Web is based on a browser • Web͸͍͍ͩͨϒϥ΢β͕ਖ਼͍͜͠ͱ͕લఏʹͳ͍ͬͯΔ • ϒϥ΢β͕HTTP/HTML/CSS/JSΛ࣮૷ͯ͘͠ΕͯΔ͓͔͛Ͱ
 ๻Β͸αʔϏεΛఏڙͰ͖Δ • ϒϥ΢β੍࡞ऀʹ͸಄͕͕͋Βͳ͍
4. Some clients are in the blackbox • ͱ͸͍͑શͯͷΫϥΠΞϯτͷڍಈ͕Θ͔ͬͯΔΘ͚Ͱ͸ͳ͍ • ISUCONͩͱΫϥΠΞϯτͷڍಈ͸Ṗ
5. E2E test for server Server Mock send a request get a response
6. Capybara it "returns 200" do visit '/' expect(page).to have_content 'Success' end
7. Test a client
8. Test a client Mock Client send a response (if you need) get a request
9. Rack::ClientSpec rubygems.org/gems/rack-client_spec
10. Rack::ClientSpec • ΫϥΠΞϯτͷڍಈΛαʔό͔ΒςετͰ͖Δ • Rack MiddlewareͳͷͰRackΠϯλʔϑΣʔεͳΒ͍͍ͩͨ૊ΈࠐΊΔ • Θ͟Θ͟ϞοΫΛͭ͘Βͳͯ͘΋αʔόʹ૊ΈࠐΊͯศར • power_assertศར github.com/harukasan/rack-client_spec
11. Insert ClientSpec to your rack Server Client send a response (if you need) get a request ClientSpec
12. Insert ClientSpec to your rack app require 'rack' require 'rack/lobster' require 'rack/client_spec' require 'rack/lobster_spec' use Rack::ClientSpec, LobsterSpec # <- Insert Clientspec run Rack::Lobster.new
13. Write a test case require 'rack/client_spec' class LobsterSpec < Rack::ClientSpec::TestCase # <-- test case def test_flip # <-- test method get '/' do |req, res| # <-- expect request assert { res.status == 200 } end get '/?flip=left' do |req, res| # <-- expect request assert { req['HTTP_REFERER'] == 'http://localhost:9292/' } end end end
14. TODO • ϦΫΤετͷ్தʹ༨ܭͳϦΫΤετ͕དྷΔͱ͚͜ΔͷΛͳ͓͢ • ϦΫΤετ͕དྷͳ͍͜ͱΛςετ͍ͨ͠ • Cache-Controlςετ͍ͨ͠ • όάϑΟοΫε