Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
KotlinTest で始める Property-based Testing/kotlint...
Search
Yusuke Hosonuma
August 24, 2019
Programming
2
1.5k
KotlinTest で始める Property-based Testing/kotlintest-property-based-testing
Kotlin Fest 2019
https://kotlin.connpass.com/event/129860/
Yusuke Hosonuma
August 24, 2019
Tweet
Share
More Decks by Yusuke Hosonuma
See All by Yusuke Hosonuma
Marzipan の正体は何だったのか そして SwiftUI の衝撃/wwdc19_marzipan_swiftui
yusukehosonuma
2
860
標準パッケージにおけるテストでの利用例から学ぶ testing / quick パッケージ/golang-testing-quick
yusukehosonuma
4
12k
Swift で ParameterizedTest をやってみた話/swift-parameterized-test
yusukehosonuma
4
2k
Property-based test beginning with SwiftCheck
yusukehosonuma
1
5.5k
XCTest(再)入門/reintroduction-to-xctest
yusukehosonuma
0
430
ソースコードから読み解く - Quick はどのように実装されているのか?/quick-code-reading
yusukehosonuma
7
11k
Swift 4.2 はどのような進化をしているのか/whats-new-swift42
yusukehosonuma
16
15k
HTTPモックライブラリ「Mockingjay」を使ってみた話/swift-mockingjay
yusukehosonuma
5
3.8k
SwiftにおけるMockライブラリの活用/swift-mock-library
yusukehosonuma
10
6.2k
Other Decks in Programming
See All in Programming
時計仕掛けのCompose
mkeeda
1
300
『GO』アプリ データ基盤のログ収集システムコスト削減
mot_techtalk
0
120
GitHub Actions × RAGでコードレビューの検証の結果
sho_000
0
260
第3回関東Kaggler会_AtCoderはKaggleの役に立つ
chettub
3
1k
仕様変更に耐えるための"今の"DRY原則を考える / Rethinking the "Don't repeat yourself" for resilience to specification changes
mkmk884
0
160
Amazon Bedrock Multi Agentsを試してきた
tm2
1
290
定理証明プラットフォーム lapisla.net
abap34
1
1.8k
ペアーズでの、Langfuseを中心とした評価ドリブンなリリースサイクルのご紹介
fukubaka0825
2
320
メンテが命: PHPフレームワークのコンテナ化とアップグレード戦略
shunta27
0
120
一休.com のログイン体験を支える技術 〜Web Components x Vue.js 活用事例と最適化について〜
atsumim
0
470
昭和の職場からアジャイルの世界へ
kumagoro95
1
380
Kubernetes History Inspector(KHI)を触ってみた
bells17
0
230
Featured
See All Featured
Rebuilding a faster, lazier Slack
samanthasiow
80
8.8k
Facilitating Awesome Meetings
lara
52
6.2k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
30
2.2k
Fashionably flexible responsive web design (full day workshop)
malarkey
406
66k
The MySQL Ecosystem @ GitHub 2015
samlambert
250
12k
Navigating Team Friction
lara
183
15k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
251
21k
KATA
mclloyd
29
14k
Stop Working from a Prison Cell
hatefulcrawdad
267
20k
Building Applications with DynamoDB
mza
93
6.2k
Imperfection Machines: The Place of Print at Facebook
scottboms
267
13k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
4
410
Transcript
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTest Ͱ࢝ΊΔ Property-based
Testing Yusuke Hosonuma @DeNA Kotlin Fest 2019
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Yusuke Hosonuma @DeNA
Swift / Haskell / Go Twitter @tobi462
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. SoftWare Engineer in
Test ςετࣗಈԽʢiOS / Android / Goʣ CI/CDɺςετٕज़ͷݚڀ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ࣥච $PNNJOHTPPOʜ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Agenda • KotlinTest
ͬͯʁ • Property-based Testing ͬͯʁ • ͲΜͳͱ͖ʹ͑Δʁ • ·ͱΊ ͳΜͱͳ͘ཧղ͕ΰʔϧ
KotlinTest ͬͯʁ Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ·ͣ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTest
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTest ଟ͘ͷػೳΛαϙʔτ͢Δ ςεςΟϯάϑϨʔϜϫʔΫ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ςεςΟϯάελΠϧ String Spec
Behavior Spec Feature Spec #%%
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ϚονϟʔAPI ʴ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ςʔϒϧۦಈςετ σʔλΛࣄલʹྻڍ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ςʔϒϧۦಈςετ σʔλΛࣄલʹྻڍ ΘΓͱશ෦Γͳ
ςεςΟϯάϑϨʔϜϫʔΫ ͱ͍͏ҹ
Property-based Testing ͬͯʁ Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
͡Ό͋
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Property-based Testing •
ςετσʔλΛϥϯμϜʹੜͤ͞ • ͕ؔຬͨ͢ੑ࣭ʢPropertyʣΛݕূ͢Δ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Property-based Testing •
ςετσʔλΛϥϯμϜʹੜͤ͞ • ͦͷ͕ؔຬͨ͢ੑ࣭ʢPropertyʣΛݕূ͢Δ ͳΔ΄ͲɺΘ͔ΒΜɻ ྫΛݟͯΈΔ
͠ࢉʢʴʣͷ ςετͰൺֱ Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
Example-based Testing Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ීஈͬͯΔ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. 1 + 1
= 2 / 2 + 3 = 5 class AddSpec: StringSpec({ "add" { forall( row(1, 1, 2), row(2, 3, 5) ) { a, b, expected -> (a + b) shouldBe expected } } })
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. class AddSpec: StringSpec({
"add" { forall( row(1, 1, 2), row(2, 3, 5) ) { a, b, expected -> (a + b) shouldBe expected } } }) ೖྗͱظΛ༻ҙͯ͠ 1 + 1 = 2 / 2 + 3 = 5
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. class AddSpec: StringSpec({
"add" { forall( row(1, 1, 2), row(2, 3, 5) ) { a, b, expected -> (a + b) shouldBe expected } } }) ݁Ռͱظ͕Ұக͢Δ͔ʁ 1 + 1 = 2 / 2 + 3 = 5
Property-based Testing Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Ͱʁ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ੑ࣭Λߟ͑Δ a +
b = b + a ަ๏ଇΛຬͨ͢
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ੑ࣭Λߟ͑Δ a +
b = b + a ʁ ʁ ͲΜͳͰΓཱͭ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTestͰݕূ class AddProperty:
StringSpec({ "commutative" { assertAll { a: Int, b: Int -> (a + b) shouldBe (b + a) } } })
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTestͰݕূ class AddProperty:
StringSpec({ “commutative" { assertAll { a: Int, b: Int -> (a + b) shouldBe (b + a) } } }) ͯ͢ͷ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTestͰݕূ class AddProperty:
StringSpec({ “commutative" { assertAll { a: Int, b: Int -> (a + b) shouldBe (b + a) } } }) औΓ͏ΔBͱCʹ͍ͭͯ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTestͰݕূ class AddProperty:
StringSpec({ "commutative" { assertAll { a: Int, b: Int -> (a + b) shouldBe (b + a) } } }) B CC BͰ͋Δ͜ͱ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. KotlinTestͰݕূ class AddProperty:
StringSpec({ "commutative" { assertAll { a: Int, b: Int -> (a + b) shouldBe (b + a) } } }) B CC BͰ͋Δ͜ͱ ϥϯμϜͳೖྗʹରͯ͠ ຬͨ͞ΕΔ͖ੑ࣭Λݕূ ৗʹ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. debug print ͯ͠ΈΔͱ
ཚͰ ճࢼߦ͞ΕͯΔ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. debug print ͯ͠ΈΔͱ
ཚͰ ճࢼߦ͞ΕͯΔ ύε͠ͳ͍σʔλ͕ͳ͍͔ େྔͷཚͰ͋ͿΓग़͢ ͱߟ͑Δͱ͔Γ͍͢
ͲΜͳ࣌ʹ͑Δʁ Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Ͱ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ͍Ͳ͜Ζ 1. ཚΛར༻ͨ͠ΞϧΰϦζϜ
2. ରশੑͷ͋ΔΞϧΰϦζϜ 3. ߴ vs
ཚΛར༻ͨ͠ΞϧΰϦζϜ Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ໎࿏ੜ • ͲΜͳ໎࿏Ͱղ͚ͳ͍ͱཱ͠ͳ͍
• ʮඞͣղ͚Δʯͱ͍͏ੑ࣭Λݕূ͢Δ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ໎࿏ੜ • ͲΜͳ໎࿏Ͱղ͚ͳ͍ͱཱ͠ͳ͍
• ٯʹݴ͑ղ͚ͳ͍ͱόά • ʮඞͣղ͚Δʯͱ͍͏ੑ࣭Λݕূ͢Δ ྫ͑ Monkey Runner ϥϯμϜͳΠϕϯτΛൃߦ͠ଓ͚ ʮམͪͳ͍ʯੑ࣭Λݕূ͢Δ "OESPJEͷ
ରশੑͷ͋ΔΞϧΰϦζϜ Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Τϯίʔυ / σίʔυ
• ͲΜͳΛΤϯίʔυ → σίʔυ ͯ͠ • ඞͣʮݩͷʹΔʯͱ͍͏ੑ࣭Λݕূ
ߴ vs Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ߴ vs
• ߴͳίʔυ͍ʢ͚Ͳෳࡶʣ • ͳίʔυ໌നʢ͚Ͳ͍ʣ • ͲͪΒʮಉ݁͡ՌʹͳΔʯͱ͍͏ੑ࣭Λར༻ • લऀͷݕূʹޙऀΛར༻͢Δ
·ͱΊ Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ·ͱΊ • KotlinTest
ςεςΟϯάϑϨʔϜϫʔΫ • Property-based Testing αϙʔτ • ϥϯμϜͳೖྗΛݩʹੑ࣭Λݕূ • Example-based Λஔ͖͑ΔͷͰͳ͍
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ·ͱΊ • KotlinTest
DSL Λ׆༻ͨ͠ςετϥΠϒϥϦ • Property-based Testing αϙʔτ • ϥϯμϜͳೖྗΛݩʹੑ࣭Λݕূ • Example-based Λஔ͖͑ΔͷͰͳ͍ ͱ͖ͬͭͮΒ͍ߟ͑ํ͕ͩ ͓֮͑ͯ͘ͱڧྗͳΧʔυ ࠷ॳ
એ Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ͲͳͨͰొஃ0,ʂ
Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ͲͳͨͰొஃ0,ʂ DeNA ʹͯ
9/9ʢ݄ʣ 19:00 ʙ
Let’s try Property-based Testing Copyright (C) DeNA Co.,Ltd. All Rights
Reserved. XJUI,PUMJO5FTU