EspressoのテストをAndroidの最新トレンドに対応させよう / Make Espresso testing follow the cutting edge in Android development

DroidKaigi 2019のセッション「EspressoのテストをAndroidの最新トレンドに対応させよう」の発表スライドです。
サンプルコードのGitHubリポジトリは
https://github.com/sumio/android-sunflower-for-droidkaigi2019
です。

1. Espresso   Android 
   2019.02.07   (sumio_tym) DroidKaigi 2019 @ Day1 Room2 12:50-
2. $ p :  # (TOYAMA Sumio) @sumio_tym (Twitter) / @sumio (GitHub) p  : DeNA SWET
   (Software Engineer in Test) p :  p : Android "! https://peaks.cc/sumio_tym/android_testing 2
3. %  3 Espresso(  Android )  "*!  AndroidX)  Kotlin& AAC (Android Architecture Components) +#& Kotlin AndroidX AAC Android$&  
    % ' 
4. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
   " (, p AAC-$ (" p 4 Kotlin AndroidX AAC Kotlin AndroidX
5. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
   " (, p AAC-$ (" p 5 Kotlin AndroidX AAC Kotlin AndroidX
6. : Espresso p Android'+ UI https://developer.android.com/training/testing/espresso/ p ATSL (Android Testing Support Library)AndroidX Test # p % -$
   p Espresso Test Recorder)    p  
     ". p * /!(,&   6 (
   ) (
   ) This logo image is reproduced from work created and shared by the Android Open Source Project (https://developer.android.com/license) and used according to terms described in the Creative Commons 2.5 Attribution License (http://creativecommons.org/licenses/by/2.5/).
7. : Espresso API Espresso
    OK
   perform()
   check()%# 7 onView(ViewMatcher).perform(ViewAction) .check(ViewAssertion) ViewMatcher ViewViewAction → ViewViewAssertion$  "! 
8. : Espresso API Espresso
   !OK 
   
   $ API (%"&# https://d.android.com/training/testing/espresso/cheat-sheet 8 onView(ViewMatcher).perform(ViewAction) .check(ViewAssertion) ViewMatcher ViewViewAction → ViewViewAssertion'  %"
9.  : AndroidX AndroidX = Support Library + Android Testing Support Library + Jetpack components https://d.android.com/jetpack/androidx/ p   androidx.*
    p 
   
      p Android Studio 
     9
10.  : AAC (Android Architecture Components) %&
    "
    "  !  #$ https://d.android.com/topic/libraries/architecture/ p 2018  Android Jetpack  10 pViewModel pLiveData pRoom pNavigation pPager pWorkManager...
11.  ;8   p Espresso p CN62I
    ?H$-A
    MO
    95 p API#%!%1J  p AndroidX p D/  >3B4
    G7 ("+&.
    F0 *% p AAC (Android Architecture Components) p E:=),@K<.*'.%L 11
12. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
    " (, p AAC-$ (" p 12 Kotlin AndroidX AAC Kotlin AndroidX
13.   :
      p Android Studio 3.3 p    p Use AndroidX artifacts p (LanguageKotlin
    ) 13 AndroidX
14.   :   p Android Studio
    Refactor
    Migrate to AndroidX... 14 AndroidX
15. 
    build.gradle 15 android { ... testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" } dependencies { ... androidTestImplementation 'androidx.test:runner:...' androidTestImplementation 'androidx.test.espresso:espresso-core:...' AndroidX
16.  
     16 
     Latest Stable Version(
    ) androidx.test:runner 1.1.1 androidx.test:rules 1.1.1 androidx.test.ext:junit-ktx 1.1.0 androidx.test:core-ktx 1.1.0 androidx.test.espresso:espresso-core 3.1.1 androidx.test.espresso:espresso-contrib 3.1.1 (
    )2019127  ActivityScenario () AndroidJUnit4() ActivityScenarioRule () AndroidX
17. KotlinjvmTarget 1.8 : androidx.test.ext:junit-ktx
    JVM 1.7
     17 tasks.withType(org.jetbrains.kotlin.gradle.tasks. KotlinCompile).all { sourceCompatibility = JavaVersion.VERSION_1_8 targetCompatibility = JavaVersion.VERSION_1_8 kotlinOptions { jvmTarget = '1.8' } } AndroidX
18. KotlinjvmTarget 1.8   activityScenarioRule(intent: Intent? = null) 
      18 AndroidX
19.    p )(AndroidX'Espresso  p &$" Use AndroidX artifacts p .+ Migrate to AndroidX...  p - ,   %
    #
    *! p androidx.test.ext:junit-ktx p androidx.test:core-ktx 19 AndroidX
20. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
    " (, p AAC-$ (" p 20 Kotlin AndroidX AAC Kotlin AndroidX
21. ,%*%): Android Sunflower p Android Jetpack (≒AAC)  2  ,%*%) https://github.com/googlesamples/android-sunflower p %+(&,/3Kotlin6- 21  " #1 (04 ) 
    .5 ($Android Sunflower%) ),'!#78   Copyright 2018 Google, Inc. Licensed under the Apache License, Version 2.0. Select text used for describing the plants are used from Wikipedia via CC BY-SA 3.0 US.
22. Sunflower  My garden Plant list 
    
     22
23. Sunflower Plant list
       → Plant details  23
24. Sunflower Plant details
    FAB → My garden   24
25. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
    " (, p AAC-$ (" p 25 Kotlin AndroidX AAC Kotlin AndroidX
26. Espresso Test Recorder:  #  p Android Studio 3.2
    (AndroidX
    Kotlin! ) p  "    p adb$Android/  26 AndroidX Kotlin
27. Espresso Test Recorder:    27 Kotlin
    AndroidX   
    p    p    AndroidX Kotlin
28. Espresso Test Recorder: "&# p 
    /adb'! p  %   Android Studio p 
    Run
    Record Espresso Test p  %$ p Record Your Test  28 AndroidX Kotlin
29. Espresso Test Recorder: ' " p ! ' p ' Record Your Test % ($&
    1 
    #() 29 AndroidX Kotlin
30. Espresso Test Recorder: Assertion p Record Your Test  Add Assertion  
    30 AndroidX Kotlin
31. Espresso Test Recorder: Assertion p  
        
     
     31 AndroidX Kotlin
32. Espresso Test Recorder: Assertion p 
       p Edit assertionSave Assertion 32 AndroidX Kotlin
33. Espresso Test Recorder:  p Record Your Test  OK  
    p Specify a test class for your test    p Test class name: () p Test class language: Kotlin 33 AndroidX Kotlin
34. Espresso Test Recorder: ATSL or AndroidX Test? Espresso Test Recorder
      ( ) 
    AndroidX   AndroidX Test
      ATSL (Android Testing Support Library)
    
    AndroidX     34 AndroidX Kotlin
35. Espresso Test Recorder:  
     35 Espresso Test Recorder
    
     p AndroidJUnit4deprecated p ActivityTestRuledeprecated  (
    ) This text is reproduced from work created and shared by the Android Open Source Project (https://developer.android.com/license) and used according to terms described in Apache License, Version 2.0. URL: https://d.android.com/reference/androidx/test/ext/junit/rules/ActivityScenarioRule (
    )
36. Espresso Test Recorder: deprecated
    AndroidJUnit4 ( import ( ) 36 import androidx.test.runner.AndroidJUnit4 import androidx.test.ext.junit.runners.AndroidJUnit4 AndroidX Kotlin
37. Espresso Test Recorder:    deprecated
    AndroidJUnit4  import Show Intention Actions (Option+Enter)  37 AndroidX Kotlin
38. Espresso Test Recorder:  
     ActivityTestRule ActivityScenarioRule 38 AndroidX Kotlin
39. Espresso Test Recorder: 
     39 @Rule @JvmField var mActivityTestRule = ActivityTestRule(GardenActivity::class.java) @get:Rule val activityScenarioRule = activityScenarioRule<GardenActivity>() Java getter 
     API: activityScenarioRule read-only  AndroidX Kotlin
40. activityScenarioRule
     40 @get:Rule val activityScenarioRule = ActivityScenarioRule(GardenActivity::class.java) @get:Rule val activityScenarioRule = activityScenarioRule<GardenActivity>() Kotlin jvmTarget 1.8 
     AndroidX Kotlin   
41. ActivityTestRule vs ActivityScenarioRule Activity 
     
     p ActivityTestRule p ActivityScenarioRule 41 @get:Rule val activityTestRule = ActivityTestRule(GardenActivity::class.java) @get:Rule val activityScenarioRule = activityScenarioRule<GardenActivity>() AndroidX Kotlin
42. ActivityTestRule vs ActivityScenarioRule Activity   
     p ActivityTestRule 42 @get:Rule val activityTestRule = ActivityTestRule(GardenActivity::class.java, false, false) ... // Activity 
      activityTestRule.launchActivity(null) AndroidX Kotlin
43. ActivityTestRule vs ActivityScenarioRule Activity   
     p ActivityScenario (ActivityScenarioRule
    ) 43 // Rule  
    // Activity 
      launchActivity<GardenActivity>(null).use { ... //   ActivityRESUMED } AndroidX Kotlin
44. ActivityTestRule vs ActivityScenarioRule ActivityScenario Activity   / 44 // Activity launchActivity<GardenActivity>(null) .use { scenario -> scenario.moveToState(State.STARTED) } AndroidX Kotlin scenario.onActivity { ... } (Espresso) 
    
45.    p Recorder"%*#  ( ) p "%') Test class languageKotlin OK p AndroidX&
    AndroidX Test 
     p 2! $ p AndroidJUnit4 ( p ActivityTestRule → ActivityScenario / ActivityScenarioRule 45 AndroidX Kotlin
46. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
    " (, p AAC-$ (" p 46 Kotlin AndroidX AAC Kotlin AndroidX
47. Espresso Test Recorder ! 47 Recorder "  p %  
          p $   Kotlin PageObject 
     (#) 
48. PageObject$
    $ 
    2'(,4  https://github.com/SeleniumHQ/selenium/wiki/PageObjects p %6#(Page ) &5 p Page#:  
     ! p "$(9/) or )0.+*- p !8 7 Page   p 3
    Page#! 1 48 Kotlin
49. Sunflower PageObject MyGardenPage p // goPlantList(): PlantListPage p // plantName // assertPlanted(plantName: String): MyGardenPage 49 Kotlin
50. Sunflower PageObject PlantListPage p // plantName // showPlantDetail(plantName: String): PlantDetailPage p // goBackMyGarden(): MyGardenPage 50 Kotlin
51. Sunflower PageObject PlantDetailPage p // ) )( goBackPlantList(): PlantListPage p / addToMyGarden(): PlantDetailPage 51 Kotlin
52. &0: (. PageObject)/ p % $#!# https://github.com/sumio/android-sunflower-for-droidkaigi2019 p , "%*
    +'- 1 
    52 Kotlin
53. #3: *0 
    PageObject ,1 *0 
    ( !&) (: droidkaigi/step0 1. PlantList
     .$  2. "Avocado" " (PlantDetail
     .$ ) 3. FAB2 My Garden /'  4. PlantDetail
     4 5. My Garden
     4 6. "Avocado"%+  -)  53 Kotlin
54. 
    54 Kotlin : 
    PageObject
55. : 
     PageObject
     Android Studio
    p Move Line Up/Down p RefactorExtractMethod p RefactorExtractVariable 55 Opt + Shift + ↑/↓ Opt + Command + M Opt + Command + V macOS
      Kotlin
56.  : 
     PageObject 
    ! Android Studio
    p RefactorInline p RefactorMove ( ) p Show Intention Actions 56 macOS
      F6 Opt + Enter Opt + Command + N Kotlin
57. 
     57 Step1  Step2-4    Page   (
    ) Step5  return value   PageObject
58. 58 Step1   Step2-4 
        Page  (
    ) Step5 
     return value  PageObject
59. Step1   Page 
       59 public   Extract Method Opt + Command + M Kotlin
60. Step1  
    : droidkaigi/step1 60 Kotlin
61. 61 Step1   Step2-4 
        Page  (
    ) Step5 
     return value  PageObject
62. Step2  
     
      62 Move Line Down Opt + Shift + ↓ Kotlin
63. Step2   
       : droidkaigi/step2 63   Kotlin
64. Step3      
     64 RefactorMove F6 Kotlin
65. Step3    ! ! 
     65 Move  Page  Kotlin
66. Step3    66  
     childAtPosition (Recorder
    ) PageUtils.kt goPlantList MyGardenPage.kt assertPlanted showPlantDetail PlantListPage.kt goBackMyGarden goBackPlantList PlantDetailPage.kt addToMyGarden Kotlin
67. Step3 
      67   : droidkaigi/step3 Move  () Kotlin
68. Step4
    object 68    object Kotlin
69. Step4 object 69 Show Intention Actions     
     Show Intention Actions Opt + Enter Kotlin
70. Step4   object 70  : droidkaigi/step4 Page 
     Kotlin
71. 71 Step1   Step2-4 
        Page  (
    ) Step5 
     return value  PageObject
72. Step5  return 
     72  PageObject return
     Show Intention Actions Opt + Enter Kotlin
73. Step5   return  73  : droidkaigi/step5 return type
     Kotlin
74. 74 Step1   Step2-4 
        Page  (
    ) Step5 
     return value  PageObject
75. 75 Kotlin    
76.  76  Kotlin
77.  77   Page  OK Kotlin
78.  :   p MyGardenPage.assertPlanted()
    ( '!' #  &   p "%$: droidkaigi/extra 78 Kotlin
79.    p Espresso Test Recorder 
     PageObject
       p Android Studio   ( ) p Kotlin Move
      79 Kotlin
80. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
    " (, p AAC-$ (" p 80 Kotlin AndroidX AAC Kotlin AndroidX
81. % 5'#UI13 
     * p View.9 p ;)"/(ID )+8,$  p  2 p 4!(-&7:<60    81 AAC AAC 
82. AAC  ! p Room:  p LiveData RxJava ! p Pager:   p LivePagedListBuilder
    RxPagedListBuilder p WorkManager:  82 ArchTaskExecutor Executors. newFixedThreadPool() AAC
83. AAC  ! p Room:  p LiveData RxJava ! p Pager:   p LivePagedListBuilder
    RxPagedListBuilder p WorkManager:  83 ArchTaskExecutor Executors. newFixedThreadPool() AAC
84. ArchTaskExecutor 84 p AAC   p  CountingTaskExecutorRule 
     androidx.arch.core:core-testing:2.0.0 AAC
85. ArchTaskExecutor:    85 AAC @get:Rule val countingRule = CountingTaskExecutorRule() @Test fun myTest() { onView(...).perform(...) // AAC   countingRule..drainTasks(1, TimeUnit.MINUTES) onView(...).perform(...) ... }   
86. ArchTaskExecutor: G S 86 p TaskExecutorWithIdlingResourceRule 
    p B / . / AAC @get:Rule val executorRule = TaskExecutorWithIdlingResourceRule() Rule L: OK
87. AAC  ! p Room:  p LiveData RxJava ! p Pager:   p LivePagedListBuilder
    RxPagedListBuilder p WorkManager:  87 ArchTaskExecutor Executors. newFixedThreadPool() AAC
88. ArchTaskExecutor :    88 ThreadPoolExecutor
     
    p WorkManager import androidx.work.Configuration ... val executor = ... val configuration = Configuration.Builder() .setExecutor(executor) .build() WorkManager.initialize(context, configuration) AAC
89. ArchTaskExecutor: # $' ! 89 IdlingThreadPoolExecutor"%
    androidx.test.espresso.idling:idling-concurrent:3.1.1 val executor = IdlingThreadPoolExecutor(...) val configuration = Configuration.Builder() .setExecutor(executor) .build() WorkManager.initialize(context, configuration) AAC   & ( https://bit.ly/2Biu8QJ ) 
90. ArchTaskExecutor:  "  90
     
    (: CoroutineWorker) asCoroutineDispatcher()  class MyWorker(...): CoroutineWorker(...) { override val coroutineContext: CoroutineDispatcher get() { val executor = IdlingThreadPoolExecutor(...) return executor.asCoroutineDispatcher() } ... AAC CoroutineWorker  ! 
91.    p AAC(!%    
        '" p ArchTaskExecutor&   p $#Executor&   p Kotlin
     &   91
92. % * p #'&+  p Espresso  p "! : Android Sunflower p Espresso Test Recorder) p PageObject"
    " (, p AAC-$ (" p 92 Kotlin AndroidX AAC Kotlin AndroidX
93. $#  93 p EspressoAndroidX
    Kotlin )"*!  p AndroidX) Recorder OK p ,+ 'deprecated -&
     (AndroidJUnit4
    ActivityScenarioRule) p PageObject  Kotlin  (%
94. !   94 p AAC
     Espresso%  
    *"(  ) p  
       
    ' $&#
95. URL p AndroidX Test
    
    https://github.com/android/android-test p Yuki AnzaiAndroidX Testin Android Dev Summit 2018  https://speakerdeck.com/yanzm/androidx-test p AndroidX Test
    
     https://developer.android.com/jetpack/androidx/releases/test 95
96. "URL ( ( +
    ) p !) Espresso &#% in DroidKaigi 2017 https://droidkaigi.github.io/2017/timetable.html#session-26 p  Espresso $ ' in DroidKaigi 2018 https://droidkaigi.jp/2018/timetable?session=16928 p *Android(+) https://peaks.cc/sumio_tym/android_testing 96
97. 97 Espresso