Build Testable Apps for Androidͷ঺հ SWETάϧʔϓ Nozomi Takuma

ࣗݾ঺հ Nozomi Takuma DeNAͷSWETάϧʔϓ Androidͱςετ͕޷͖

Session Summary AndroidΞϓϦʹ͓͚Δࣗಈςετͷ ઓུ TestableͳΞϓϦͷߏ੒ Unit/Integra=on/E2Eςετͷ࣮૷

ࣗಈςετͷઓུ Scope/Speed/Fidelityͷόϥϯε ςετϐϥϛου

ࣗಈςετͷઓུ

TODOΞϓϦΛྫʹ Cri=cal User Journey λεΫΛ࡞੒͢Δ λεΫͷਐḿΛ֬ೝ͢Δ

Monolithic Architecture

Ϋϥε͝ͱΛ੾Γ཭͢ͷ ͕೉͍͠ είʔϓͷখ͍͞ςετ ͕Ͱ͖ͣɺE2Eςετ͕
 ૿͍͑ͯ͘ Monolithic Architecture

Layered Architecture

Unitςετ͸໰୊ͳ͠ ࠷ऴతʹ֤Layer͕Monoli=cʹͳΓ
 ΠϯςάϨʔγϣϯςετΑΓ΋
 E2Eςετ͕૿͍͑ͯ͘ Layered Architecture

Modular Architecture

Architecture Component Naviga=on Data Binding Live Data Room View ViewModel Model

શମਤ

TDD(TDD&ATDDͬΆ͍?)

TDD(TDD&ATDDͬΆ͍?) ͱ͍͏લஔ͖͕͋Γ
 E2Eςετͷઆ໌͔Β͸͡·Γ·͢

E2E Test

Happy PathΛ
 ςετ E2E Test Scope

E2E Test Code @Test fun createTask() { // start up Tasks screen val ac=vityScenario = Ac=vityScenario.launch(TasksAc=vity::class.java) dataBindingIdlingResource.monitorAc=vity(ac=vityScenario) // Click on the "+" bu\on, add details, and save onView(withId(R.id.fab_add_task)).perform(click()) onView(withId(R.id.add_task_=tle)).perform(typeText("=tle")) onView(withId(R.id.add_task_descrip=on)).perform(typeText("descrip=on")) onView(withId(R.id.fab_save_task)).perform(click()) // Then verify task is displayed on screen onView(withText("=tle")).check(matches(isDisplayed())) }

E2E Test Code @Test fun createTask() { // start up Tasks screen val ac=vityScenario = Ac=vityScenario.launch(TasksAc=vity::class.java) dataBindingIdlingResource.monitorAc=vity(ac=vityScenario) // Click on the "+" bu\on, add details, and save onView(withId(R.id.fab_add_task)).perform(click()) onView(withId(R.id.add_task_=tle)).perform(typeText("=tle")) onView(withId(R.id.add_task_descrip=on)).perform(typeText("descrip=on")) onView(withId(R.id.fab_save_task)).perform(click()) // Then verify task is displayed on screen onView(withText("=tle")).check(matches(isDisplayed())) } Ac=vityΛىಈ͠
 ෳ਺ͷFragmentʹ·͕ͨͬͯ ϑϩʔΛݕূ

Integra=on Test

Integra=on Test Scope ςετͷείʔϓΛ খ͘͢͞Δ

Test Double ্ʹ͍͘΄Ͳ࣮ࡍͷ
 ৼΔ෣͍ʹۙ͘ͳΔ Fidelity

AddEditTaskFragmentTest VerifyͰ͖ΔΑ͏
 ϞοΫʹஔ͖׵͑ ࠓճ͸಺෦ʹMapΛ࣋ͭ Fakeʹஔ͖׵͑


Integra=on Test Code @Test fun validTask_isSaved() { // GIVEN - On the "Add Task" screen. val navController = mock(NavController::class.java) val bundle = AddEditTaskFragmentArgs(null, getApplica=onContext().getString(R.string.add_task)).toBundle() val scenario = launchFragmentInContainer(bundle, R.style.AppTheme) scenario.onFragment { Naviga=on.setViewNavController(it.view!!, navController) }
 .. } FragmentΛىಈ͠
 ϞοΫͷNavControllerΛ
 ౉͢

Integra=on Test Code @Test fun validTask_isSaved() {
 .. // WHEN - Valid =tle and descrip=on combina=on and click save onView(withId(R.id.add_task_=tle)).perform(replaceText("=tle")) onView(withId(R.id.add_task_descrip=on)).perform(replaceText("descrip=on")) onView(withId(R.id.fab_save_task)).perform(click()) .. }

Integra=on Test Code @Test fun validTask_isSaved() { .. // THEN - Verify that the repository saved the task val tasks = (repository.getTasksBlocking(true) as Result.Success).data assertEquals(tasks.size, 1) assertEquals(tasks[0].=tle, "=tle") verify(navController).navigate( AddEditTaskFragmentDirec=ons .ac=onAddEditTaskFragmentToTasksFragment(ADD_EDIT_RESULT_OK)) } Fake͔ΒσʔλΛ औಘͯ͠ݕূ


Integra=on Test Code @Test fun validTask_isSaved() { .. // THEN - Verify that the repository saved the task val tasks = (repository.getTasksBlocking(true) as Result.Success).data assertEquals(tasks.size, 1) assertEquals(tasks[0].=tle, "=tle") verify(navController).navigate( AddEditTaskFragmentDirec=ons .ac=onAddEditTaskFragmentToTasksFragment(ADD_EDIT_RESULT_OK)) } ਖ਼͍͠ύϥϝʔλͰNaviga=on Ͱ͖͍ͯΔ͔ݕূ

Unit Test

Unit Test Summary TaskLocalDataStoreTest ৄࡉͳ࣮૷ΑΓͲ͏ৼΔ෣͏͔ DaoΛMockͰ͸ͳ͘Fakeʹͯ͠
 ςετ Corou=neͷςετ༻ͷrunBlockingTest

Tes=ng Codelab ηογϣϯͷ಺༰Λ࣮ࡍʹखΛಈ͔ ͠ͳ͕ΒֶͿ͜ͱ͕Ͱ͖Δ g.co/codelabs/android-tes=ng

AndroidX Test Local TestͱInstrumenta=on Testͷࠩ෼Λٵऩ͢Δ
 unified API ҆ఆੑ΍૬ޓӡ༻ੑͷڧԽ Local JVM supportͷڧԽ Architecture component support

Nitrogen Unified APIͰॻ͔ΕͨςετΛ
 ༷ʑͳ؀ڥͰγʔϜϨεʹ
 ࣮ߦͰ͖ΔPlanorm

Nitrogen͕ϦϦʔε͞ΕΔ·Ͱ android { sourceSets { String sharedTestDir = 'src/sharedTest/java' test { java.srcDir sharedTestDir } androidTest { java.srcDir sharedTestDir } }

CodelabͰͷ࢖͍෼͚ androidTest E2E sharedTest Integra=on Test(FragmentɾRoom·ΘΓ) test Unit Test

Nitrogen EAP 2019 2Qʹalpha൛ϦϦʔε༧ఆͳͷͰ ͦΖͦΖ৮ΕΔΑ͏ʹͳΔͱظ଴ bit.ly/nitrogen-eap

·ͱΊ ࣗಈςετͷઓུͱͦΕΛ࣮ݱ͢ΔArchitectuteͷ঺հ CodelabΛ௨ͯ͡खΛಈ͔͠ͳ͕ΒֶͿ͜ͱ͕Ͱ͖Δ Unified APIΛ࢖༻ͨ͠γʔϜϨεͳ࣮ߦ(Nitrogen EAP!)

Session Info h\ps://events.google.com/io/schedule/events/ 7bd73b37-1bca-40b3-b8e9-6efe3a9ac234 h\ps://www.youtube.com/watch?v=VJi2vmaQe6w