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The history of testing framework in Ruby

This talk describes about the history of testing framework in Ruby. Ruby 2.2 bundles two testing frameworks. They are minitest and test-unit. Do you know why two testing frameworks are bundled? Do you know that test-unit was bundled and then removed from Ruby distribution? If you can't answer these questions and you're interested in testing framework, this talk will help you. This talk describes about the history of bundled testing framework in Ruby and some major testing frameworks for Ruby in chronological order.

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The history of testing framework in Ruby Powered by Rabbit 2.1.9
The history of
testing framework
in Ruby
Kouhei Sutou
ClearCode Inc.
RubyKaigi 2015
2015-12-12
The history of testing framework in Ruby Powered by Rabbit 2.1.9
Silver sponsor
The history of testing framework in Ruby Powered by Rabbit 2.1.9
Goal
目標
You know about
/Atest.+unitz/i
/Atest.+unitz/iを知ること
The history of testing framework in Ruby Powered by Rabbit 2.1.9
Test
テスト
Which Rubies do include
/Atest.+unitz/i?
/Atest.+unitz/iを含んでいるRubyはどれでしょう?
1.4 1.6 1.8
1.9.1 1.9.2 1.9.3
2.0 2.1 2.2
2.3
The history of testing framework in Ruby Powered by Rabbit 2.1.9
Answer
答え
Which Rubies do include
/Atest.+unitz/i?
/Atest.+unitz/iを含んでいるRubyはどれでしょう?
1.4 1.6 1.8
1.9.1 1.9.2 1.9.3
2.0 2.1 2.2
2.3
History
歴史

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The history of testing framework in Ruby

  • 1. The history of testing framework in Ruby Powered by Rabbit 2.1.9 The history of testing framework in Ruby Kouhei Sutou ClearCode Inc. RubyKaigi 2015 2015-12-12
  • 2. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Silver sponsor
  • 3. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Goal 目標 You know about /Atest.+unitz/i /Atest.+unitz/iを知ること
  • 4. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test テスト Which Rubies do include /Atest.+unitz/i? /Atest.+unitz/iを含んでいるRubyはどれでしょう? 1.4 1.6 1.8 1.9.1 1.9.2 1.9.3 2.0 2.1 2.2 2.3
  • 5. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Answer 答え Which Rubies do include /Atest.+unitz/i? /Atest.+unitz/iを含んでいるRubyはどれでしょう? 1.4 1.6 1.8 1.9.1 1.9.2 1.9.3 2.0 2.1 2.2 2.3
  • 7. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Characters 登場人物 testsupp RubyUnit Lapidary Test::Unit test/unit test-unit minitest RSpec
  • 8. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 1.3 times Ruby 1.3の時代 1998-1999✓ The first testing framework for Ruby was released 最初のRuby用のテスティングフレームワークがリリース testsupp✓ ✓
  • 9. The history of testing framework in Ruby Powered by Rabbit 2.1.9 testsupp 1999-4-11: [ruby-talk:00634] ANN: testsupp.rb 0.1 ✓ Perl's Test like API PerlのTestモジュールのようなAPI Perl's Test exists since 1998 PerlのTestモジュールは1998からある ✓ ✓
  • 10. The history of testing framework in Ruby Powered by Rabbit 2.1.9 testsupp: API require "testsupp" include TestSupp start_tests ok "Hello" == "Hello" end_tests
  • 11. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 1.4 times Ruby 1.4の時代 1999-2000✓ The first xUnit testing framework for Ruby was released 最初のRuby用のxUnit系テスティングフレームワークが リリース RubyUnit✓ ✓
  • 12. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RubyUnit Since 1999-11-20 at least 少なくとも1999年11月20日には存在していた [ruby-list:18594] "RubyUnit のページは当分更新されないと思うです." ✓ ✓ The first xUnit testing framework for Ruby 最初のRuby用のxUnit系テスティングフレームワーク ✓
  • 13. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: XP 参考情報:XP eXtream Programing✓ The first XP book was published at 1999 最初のXPの本は1999年に出版 ✓ xUnit was born from XP xUnitはXPが生み出した ✓
  • 14. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RubyUnit: API require "runit/testcase" class TestCalc < RUNIT::TestCase def test_add assert_equal(3, 1 + 2) end end
  • 15. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RubyUnit: Impression 感想 Ruby-ish Rubyっぽい
  • 16. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RubyUnit: FYI RubyUnit:参考情報 Test generator exists テストジェネレーターがある ✓ Test exec command exists テスト実行コマンドがある ✓ rubyunit gem exists since 2014-10-12 rubyunitというgemが2014年10月12日から存在する Not related product 関係のないプロダクト ✓ ✓
  • 17. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 1.6 times: 1 Ruby 1.6の時代:1 2000-2002✓ The second xUnit testing framework for Ruby was released 2つ目のRuby用のxUnit系テスティングフレームワークが リリース Lapidary✓ ✓
  • 18. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Lapidary The first release was 2001-03-20 最初のリリースは2001年3月20日 ✓ The second xUnit testing framework for Ruby 2つ目のRuby用のxUnit系テスティングフレームワーク Maybe たぶん ✓ ✓
  • 19. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Lapidary: API require "Lapidary/TestCase" class TC_Adder < Lapidary::TestCase def testAdd assertEqual(3, 1 + 2) end end
  • 20. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Lapidary: Impression 感想 Not Ruby-ish Rubyっぽくない
  • 21. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Lapidary: FYI 参考情報 Has GUI test runner GUIのテスト実行機能アリ ✓
  • 22. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 1.6 times: 2 Ruby 1.6の時代:2 Started trying to bundle a testing framework to Ruby テスティングフレームワークをRubyにバンドルする 試みを開始 RubyUnit + Lapidary = Test::Unit✓ ✓
  • 23. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit Since 2002-02: [ruby-talk:34744] ✓ The first /Atest.+unitz/i 最初の/Atest.+unitz/i ✓ The author is the author of Lapidary Lapidaryの作者が作者 ✓
  • 24. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit: API require "test/unit" class TC_Adder < Test::Unit::TestCase def test_add assert_equal(3, 1 + 2) end end
  • 25. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit: Impression 感想 Ruby-ish Rubyっぽい
  • 26. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit: FYI 1 参考情報1 API is based on RubyUnit APIはRubyUnitのよう Has RubyUnit compatible API RubyUnit互換APIアリ ✓ ✓ Impl. is based on Lapidary 実装はLapidaryベース Has GUI test runner GUIのテスト実行機能アリ ✓ ✓
  • 27. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Before Ruby 1.8 Ruby 1.8の前までのまとめ testsupp: Perl like API✓ RubyUnit: Ruby-ish xUnit✓ Lapidary: Not Ruby-ish xUnit✓ Test::Unit: RubyUnit API + Lapidary Impl.✓ ✓
  • 28. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 1.8 times: 1 Ruby 1.8の時代:1 2003-2013✓ Ruby bundled a testing framework Rubyがテスティングフレームワークをバンドルした Test::Unit aka test/unit バンドルされたのはTest::Unit test/unitとも呼ばれる ✓ ✓
  • 29. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: Why test/unit? 参考情報:なぜtest/unitと呼ぶか require "test/unit"
  • 30. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 1.8 times: 2 Ruby 1.8の時代:2 RSpec was born RSpec誕生
  • 31. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RSpec Since 2005-08✓ Tool for Behavior Driven Development 振る舞い駆動開発用のツール ✓ Active development 開発は活発 ✓
  • 32. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RSpec 0.1.0: API # 2005-08 require "spec" class SpecAdd < Spec::Context def add (1 + 2).should_equal 3 end end
  • 33. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RSpec: 1.0.0: API # 2007-05 require "spec" describe "Add" do it "should support positive + positive" do (1 + 2).should == 3 end end
  • 34. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RSpec 1.0.0: Impression 感想 Engl-ish 英語っぽい
  • 35. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RSpec: FYI 参考情報 Test exec command exists テスト実行コマンドがある RubyUnit like RubyUnitみたい ✓ ✓ More features than Test::Unit Test::Unitより機能が多い Mock, Not implemented, ... モックや未実装など ✓ ✓
  • 36. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit in Ruby 1.8 Ruby 1.8バンドル後のTest::Unit No active development 開発は停滞 ✓ Maintainer was changed メンテナー交代 The author of minitest 後のminitestの作者 ✓ ✓
  • 37. The history of testing framework in Ruby Powered by Rabbit 2.1.9 RSpec and Test::Unit RSpec is getting better but Test::Unit isn't changed... RSpecはよくなっているのにTest::Unitは変わらない。。。 ✓ Test::Unit should also be getting better! Test::Unitももっとよくしたい! ✓
  • 38. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit: new maintainer 新しいメンテナー New maintainer said: 新メンテナー曰く Can't maintain Test::Unit because it's too complex Test::Unitは複雑すぎてメンテナンスできない ✓ ✓
  • 39. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Ruby 1.8 times Ruby 1.8時代のまとめ Ruby started bundling Test::Unit (/Atest.+unitz/i) RubyがTest::Unitのバンドルを始めた But Test::Unit was died... バンドル後、Test::Unitは死んだ。。。 ✓ ✓ RSpec was born and active RSpecが生まれ、活発だった ✓
  • 40. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 1.9 times Ruby 1.9の時代 2009-2014✓ Ruby dropped Test::Unit RubyがTest::Unitを捨てた Because Test::Unit is too complex for new maintainer 新メンテナーにはTest::Unitは複雑すぎるから ✓ ✓
  • 41. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit → test-unit Released as test-unit gem test-unit gemとしてリリース Still /Atest.+unitz/i 名前変更後も/Atest.+unitz/i ✓ test-unit 1.2.3 == Test::Unit in Ruby 1.8✓ ✓ Maintainer was changed メンテナー交代 Me 私 ✓ ✓
  • 42. The history of testing framework in Ruby Powered by Rabbit 2.1.9 test-unit Since 2008-03✓ Active development 開発は活発 ✓ High backward compatibility 高い後方互換性 Exception: Inheritance 例外:継承時の挙動 ✓ ✓
  • 43. The history of testing framework in Ruby Powered by Rabbit 2.1.9 minitest Since 2008-10✓ Active development 開発は活発 ✓ The author is the new maintainer of Test::Unit 作者はTest::Unitの新メンテナー ✓
  • 44. The history of testing framework in Ruby Powered by Rabbit 2.1.9 minitest and Test::Unit Mini, simple, clean and fast 小さくてシンプルでキレイで速い ✓ The author said: 作者曰く 100% Test::Unit compatible Test::Unitと100%互換 ✓ But it's not compat in fact... 実際は互換ではなかった。。。 ✓ ✓
  • 45. The history of testing framework in Ruby Powered by Rabbit 2.1.9 test/unit in Ruby 1.9 Provide Test::Unit API Test::Unit互換APIを提供 ✓ Wrapper of minitest minitestのラッパー Ruby developers developed it not minitest author minitestの作者ではなくRuby開発者が開発 ✓ ✓ Not Test::Unit but /Atest.+unitz/i Test::Unitではないが/Atest.+unitz/iではある ✓
  • 46. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Ruby 1.9 times Ruby 1.9時代のまとめ Ruby dropped Test::Unit RubyがTest::Unitを捨てた Test::Unit → test-unit gem✓ ✓ Ruby bundled minitest Rubyはminitestをバンドルした ✓ Ruby created test/unit (test/unit provided Test::Unit API) RubyはTest::Unit APIを提供するtest/unitを新しく作った ✓
  • 47. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 2.0 times Ruby 2.0の時代 2013-✓ No highly important things 特筆すべきことはない test-unit, minitest and RSpec were actively developed test-unitもminitestもRSpecも活発に開発が進んでいた ✓ ✓
  • 48. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 2.1 times: 1 Ruby 2.1の時代:1 2013-✓ minitest 5 introduced incompatible changes minitest 5で非互換の変更が入った ✓
  • 49. The history of testing framework in Ruby Powered by Rabbit 2.1.9 minitest 5 test/unit maintainer said: test/unitメンテナー曰く Can't maintain test/unit with minitest 5 minitest 5向けのtest/unitはメンテナンスできない ✓ ✓ test/unit for minitest was dropped minitestのラッパーとしてのtest/unitを捨てた ✓
  • 50. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Is no test/unit problem? test/unitがないことは問題なのか? Ruby used test/unit for Ruby's tests RubyはRubyのテストにtest/unitを使っていた No test/unit means existing tests can't be worked test/unitがなくなると既存のテストが動かない ✓ ✓
  • 51. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Solution idea: 1 解決案:1 Keep bundling and using minitest 4 minitest 4のバンドルを継続し、使い続ける Users will be confused because the latest Ruby doesn't bundle the latest minitest 最新のRubyに最新のminitestがバンドルされていないと ユーザーは混乱しそう ✓ ✓
  • 52. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Solution idea: 2 解決案:2 Bundle the latest minitest 最新のminitestをバンドルする Ruby uses minitest 4 and test/ unit for its tests Rubyのテストにはminitest 4とtest/unitを使う ✓ ✓ Accepted!
  • 53. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Note for idea 2 案2の補足 Need to care existing Test::Unit API users 既存のTest::Unit APIユーザーをケアする必要がある Backward compat is important! 後方互換性は重要! ✓ ✓ Bundle test-unit gem too for Test::Unit API Test::Unit互換APIのためにtest-unit gemもバンドル ✓
  • 54. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Ruby 2.1 times Ruby 2.1時代のまとめ Ruby developers decided to maintain minitest 4 and test/ unit for Ruby's tests Ruby開発者はRubyのテスト用にminitest 4とtest/unitをメ ンテナンスすることを決めた ✓
  • 55. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 2.2 times: 1 Ruby 2.2の時代:1 2014-✓ Upgraded bundled minitest to 5 バンドルしているminitestを5に更新 Moved minitest 4 and test/unit to test/ minitest 4とtest/unitはtest/以下に移動 ✓ ✓
  • 56. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Upgraded minitest to 5 minitest 5に更新 - lib/minitest/*.rb + test/lib/minitest/*.rb - lib/test/unit.rb + test/lib/test/unit.rb - lib/test/unit/**/*.rb + test/lib/test/unit/**/*.rb
  • 57. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 2.2 times: 2 Ruby 2.2の時代:2 Bundled test-unit gem again for users 再びtest-unit gemをバンドル Ruby 1.9 dropped test-unit gem Ruby 1.9はtest-unit gemを捨てた ✓ ✓
  • 58. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Bundled test-unit again test-unitを再びバンドル test-unit gem provides: lib/test-unit.rb lib/test/unit.rb lib/test/unit/**/*.rb
  • 59. The history of testing framework in Ruby Powered by Rabbit 2.1.9 test/unit in Ruby 2.2 Ruby 2.2のtest/unit For Ruby developers Ruby開発者にとっては test/lib/test/unit✓ ✓ For users ユーザーにとっては lib/test/unit = test-unit gem✓ ✓
  • 60. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: test/lib/test/unit Includes useful features for Ruby's tests Ruby本体のテストに便利な機能が入っている Leak checker for file descriptor, thread, process... リークチェッカー:ファイルディスクリプターやスレッ ドのリークやゾンビプロセスを検出 ✓ Memory usage profiler メモリー使用量のプロファイラー ✓ ✓
  • 61. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Ruby 2.2 times Ruby 2.2時代のまとめ Bundled minitest 5 minitest 5をバンドル ✓ Bundled test-unit again 再びtest-unitをバンドル ✓ Ruby's tests used forked mintiest 4 and test/unit Rubyのテストはフォークしたminitest 4とtest/unitを使う ✓
  • 62. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby 2.3 times Ruby 2.3の時代 2015-✓ No highly important things 特筆すべきことはない test-unit, minitest, test/lib/ test/unit and RSpec were actively developed test-unitもminitestもtest/lib/test/unitもRSpecも活 発に開発が進んでいた ✓ ✓
  • 63. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 1 歴史のまとめ:1 Ruby 1.4 and 1.6 didn't bundle any testing framework Ruby 1.4と1.6はテスティングフレームワークをバンドル していなかった ✓ Test::Unit was born in Ruby 1.6 times Ruby 1.6の時代にTest::Unitが生まれた The first /Atest.+unitz/i✓ ✓
  • 64. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 2 歴史のまとめ:2 Ruby 1.8 bundled Test::Unit Ruby 1.8はTest::Unitをバンドルした /Atest.+unitz/i in 1.8✓ ✓ Ruby 1.9 dropped Test::Unit and bundled minitest Ruby 1.9はTest::Unitを捨ててminitestをバンドルした ✓
  • 65. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 3 歴史のまとめ:3 Ruby 1.9 provided test/unit as a wrapper of minitest Ruby 1.9はminitestのラッパーとしてtest/unitを提供した test/unit provided Test::Unit compatible API test/unitはTest::Unitの互換APIを提供した ✓ /Atest.+unitz/i in 1.9✓ ✓
  • 66. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 4 歴史のまとめ:4 Ruby 2.0 is same as Ruby 1.9 Ruby 2.0の状況はRuby 1.9と変わらない test/unit is /Atest.+unitz/i in 2.0 つまり、2.0での/Atest.+unitz/iはtest/unit ✓ ✓
  • 67. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 5 歴史のまとめ:5 Ruby 2.1 didn't upgrade minitest to 5 Ruby 2.1はminitestを5に更新しなかった minitest 5 has backward incompatible changes minitest 5には後方非互換の変更があった ✓ They break Ruby's tests 非互換を受け入れるとRubyのテストが動かなくなる ✓ ✓
  • 68. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 6 歴史のまとめ:6 Ruby 2.2 upgraded minitest Ruby 2.2はminitestを5に更新した Dropped test/unit as minitest wrapper Ruby 2.2はminitestのラッパーのtest/unitを捨てた ✓ Used forked minitest 4 and test/ unit for its tests Ruby 2.2はRubyのテスト用にminitest 4のフォークと test/unitを使うことにした ✓ ✓
  • 69. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 7 歴史のまとめ:7 Ruby 2.2 bundled test-unit gem again Ruby 2.2はtest-unit gemを再びバンドルした /Atest.+unitz/i in 2.2✓ ✓
  • 70. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 8 歴史のまとめ:8 test/lib/test/unit was evolved for Ruby's tests test/lib/test/unitはRubyのテスト用に進化した /Atest.+unitz/i in 2.2 too✓ ✓
  • 71. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: History: 9 歴史のまとめ:9 No highly important things in Ruby 2.3 Ruby 2.3には特筆すべきことはない ✓
  • 72. The history of testing framework in Ruby Powered by Rabbit 2.1.9 What's /Atest.+unitz/i /Atest.+unitz/iはなにか Test::Unit compatible API Test::Unit互換API
  • 73. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit compat API Test::Unit互換API class XXXTest < Test::Unit::TestCase def test_xxx assert_equal(xxx, yyy) end end
  • 74. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Test::Unit API spirit Test::Unit APIの魂 Ruby-ish Rubyらしさ
  • 75. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Ruby-ish in Test::Unit Test::UnitでのRubyらしさ Write test as normal Ruby script 普通のRubyスクリプトのようにテストを書ける It's important in minitest too minitestもこれを大事にしている ✓ ✓
  • 76. The history of testing framework in Ruby Powered by Rabbit 2.1.9 By example: 1 実例:1 Grouping tests テストのグループ化 ↓ class
  • 77. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Group: 1 グループ化:1 class TestAdd < Test::Unit::TestCase def test_positive_positive assert_equal(3, 1 + 2) end def test_positive_negative assert_equal(-2, 1 + -3) end end
  • 78. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Group: 2 グループ化:2 class TestSub < Test::Unit::TestCase def test_positive_positive assert_equal(-2, 1 - 3) end def test_positive_negative assert_equal(4, 1 - -3) end end
  • 79. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Group: 3 グループ化:3 class TestCalc < Test::Unit::TestCase class TestAdd < self # TestAdd < TestCalc # def test_positive_positive # def test_positive_negative end class TestSub < self # TestAdd < TestCalc # def test_positive_positive # def test_positive_negative end end
  • 80. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Group: 1 グループ化のまとめ:1 Test case has tests テストケースは複数のテストを持つ Test case is class テストケースをクラスとして実装 ✓ Test is method テストをメソッドとして実装 ✓ Class has methods クラスは複数のメソッドを持つ ✓ ✓
  • 81. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Group: 2 グループ化のまとめ:2 Sub test case is sub class サブテストケースはサブクラスとして実装 Sub test case is-a parent test case TestAdd is a test case of TestCalc サブテストケースは親テストケースとis-aの関係 ✓ ✓
  • 82. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: Group 参考情報:グループ化 Test::Unit and minitest don't support sub test case is a sub class Test::Unitとminitestはサブクラスでサブテストケースを 作ることをサポートしていない ✓ test-unit only supports it test-unitだけがサポートしている It's the only one incompatible 唯一の非互換 ✓ ✓
  • 83. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: Group DSL 参考情報:グループ化DSL class TestCalc < Test::Unit::TestCase sub_test_case "+" do test "positive + negative" {} end sub_test_case "-" do test "positive - negative" {} end end test-unit feature
  • 84. The history of testing framework in Ruby Powered by Rabbit 2.1.9 By example: 2 実例:2 Share tests テストの共有 ↓ module
  • 85. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Share: 1 共有:1 module KVSTests def test_read_write @kvs[:key] = :value assert_equal(:value, @kvs[:key]) end end
  • 86. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Share: 2 共有:2 class TestKVSHash < Test::Unit::TestCase include KVSTests def setup; @kvs = {}; end end class TestKVSOpenStruct < Test::Unit::TestCase include KVSTests def setup; @kvs = OpenStruct.new; end end
  • 87. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Share 共有のまとめ Tests can be shared by module モジュールでテストを共有できる Module is used for sharing method implementations in Ruby Rubyではモジュールはメソッドの実装を共有するために 使われている ✓ ✓
  • 88. The history of testing framework in Ruby Powered by Rabbit 2.1.9 By example: 3 実例:3 Assertion アサーション ↓ Write as-is そのまま書く
  • 89. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Assert: Equal アサート:等価 def test_add assert_equal(3, 1 + 2) # ↑↓ as-is # RSpec: expect(1 + 2).to eq(3) end
  • 90. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Assert: Predicate アサート:述語 def test_exist_readme assert(File.exist?("README")) # ↑ as-is ↓ not as-is # RSpec: expect(File).to exist("README") end
  • 91. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Message from minitest 1) Failure: TestFile#test_exist_readme [test-file-minitest.rb:5]: Failed assertion, no message given. Less information
  • 92. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Message from RSpec 1) File README should exist Failure/Error: expect(File).to exist("README") expected File to exist # ./spec-file.rb:5:in `block (2 levels) in <top (required)>' Colorized and snippet
  • 93. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Message from test-unit Failure: <false> is not true. test_exist_readme(TestFile) test-file-test-unit.rb:5:in `test_exist_readme' 2: 3: class TestFile < Test::Unit::TestCase 4: def test_exist_readme => 5: assert(File.exist?("README")) 6: end 7: end Colorized and snippet
  • 94. The history of testing framework in Ruby Powered by Rabbit 2.1.9 power-assert def test_exist_readme assert do # ↓ as-is File.exist?("README") end end Built-in in test-unit
  • 95. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Message: power-assert Failure: File.exist?("README") | | | false File (NOTE: ← Receiver information) test_exist_readme(TestFile) /usr/lib/ruby/vendor_ruby/power_assert.rb:36:in `start' test-file-power-assert.rb:5:in `test_exist_readme' 2: 3: class TestFile < Test::Unit::TestCase 4: def test_exist_readme => 5: assert do 6: File.exist?("README") 7: end 8: end
  • 96. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: test-unit and power- assert Don't recommend "all power-assert" すべてpower-assertは非推奨 Recommend "power-assert only for predicate" 述語だけpower-assertを推奨 ✓ ✓
  • 97. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Assert: Equal # @group.users should return # sorted names of user assert_equal(user_names.sort, @group.users) # ↑ Align-able assert do @group.users == user_names.sort end
  • 98. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Align 縦に並べる Indicate compare targets visually 視覚的に比較対象ということを示す ✓ Clarify differences visually 視覚的に違いを明確にする ✓
  • 99. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Experiment: 1 実験:1 Find a difference! 違うところを探せ! Hello | Heilo
  • 100. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Experiment: 2 実験:2 Find a difference! 違うところを探せ! Hello Heilo
  • 101. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Align in Ruby Rubyで縦に並べる # Arguments are natural method(arg1, arg2) # Operands aren't natural operand1 == operand2 引数だと自然だけどオペランドだと不自然
  • 102. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: test-unit and power- assert Don't recommend "all power-assert" すべてpower-assertは非推奨 Recommend "power-assert only for predicate" 述語だけpower-assertを推奨 ✓ ✓
  • 103. The history of testing framework in Ruby Powered by Rabbit 2.1.9 FYI: Fixture 参考情報:フィクスチャー Ensure clean test environment キレイなテスト環境を用意する仕組み
  • 104. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Fixture: e.g. フィクスチャー:例 def setup; p :s; end def teardown; p :t; end def test_1; p :t1; end def test_2; p :t2; end # :s -> :t1 -> :t -> # :s -> :t2 -> :t
  • 105. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Fixture: Open file フィクスチャー:ファイルを開く def setup @file = File.open("x") end def teardown @file.close end
  • 106. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Fixture: Open file フィクスチャー:ファイルを開く Not Ruby-ish Rubyっぽくない
  • 107. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Fixture: Open File フィクスチャー:ファイルを開く def setup # Ruby-ish version File.open("x") do |file| @file = file yield end # Close file automatically end New feature in test-unit
  • 108. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Test::Unit API まとめ:Test::Unit API Ruby-ish is important in Test::Unit API Test::Unit APIではRubyらしいことは重要 ✓
  • 109. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Test::Unit API まとめ:Test::Unit API (Sub) test case by (sub) class (サブ)テストケースには(サブ)クラスを使う ✓ Share tests by module テストの共有にはモジュールを使う ✓ as-is in assert アサートではそのままの使い方で書く ✓
  • 110. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Wrap up: Test::Unit API まとめ:Test::Unit API More Ruby-ish さらにRubyっぽく Support block based fixture ブロックを使ったフィクスチャーもサポート ✓ ✓
  • 111. The history of testing framework in Ruby Powered by Rabbit 2.1.9 Goal 目標 You know about /Atest.+unitz/i /Atest.+unitz/iを知ること