DroidKaigi2025アプリのスクリーンショットテストが失敗していた原因を調べてみた

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   $POUSJCVUPST4DSFFO @RunWith(UiTestRunner::class) class ContributorsScreenTest { val testAppGraph = createContributorsScreenTestGraph() @ComposeTest fun runTest() { describedBehaviors.forEach { behavior -> val robot = testAppGraph.contributorsScreenRobotProvider() runComposeUiTest { behavior.execute(robot) } } }
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   $POUSJCVUPST4DSFFO Executing step: 0 (ContributorsScreen - when server is operational - it should show loading indicator) Android context is not initialized. If it happens in the Preview mode then call PreviewContextConfigurationEffect() function. java.lang.IllegalStateException: Android context is not initialized. If it happens in the Preview mode then call PreviewContextConfigurationEffect() function.
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7. Τϥʔ͕ൃੜ͍ͯ͠ΔՕॴ @ExperimentalResourceApi internal actual fun getPlatformResourceReader(): ResourceReader = DefaultAndroidResourceReader @ExperimentalResourceApi internal object DefaultAndroidResourceReader : ResourceReader { private val assets: AssetManager by lazy { val context = androidContext ?: error( "Android context is not initialized. " + "If it happens in the Preview mode then call PreviewContextConfigurationEffect() function." ) context.assets } private val instrumentedAssets: AssetManager? get() = try { androidInstrumentedContext.assets } catch (e: NoClassDefFoundError) { Log.d("ResourceReader", "Android Instrumentation context is not available.") null } 3FTPVSDF3FBEFSBOESPJE
8. Τϥʔ͕ൃੜ͍ͯ͠ΔՕॴ @ExperimentalResourceApi internal actual fun getPlatformResourceReader(): ResourceReader = DefaultAndroidResourceReader @ExperimentalResourceApi internal object DefaultAndroidResourceReader : ResourceReader { private val assets: AssetManager by lazy { val context = androidContext ?: error( "Android context is not initialized. " + "If it happens in the Preview mode then call PreviewContextConfigurationEffect() function." ) context.assets } private val instrumentedAssets: AssetManager? get() = try { androidInstrumentedContext.assets } catch (e: NoClassDefFoundError) { Log.d("ResourceReader", "Android Instrumentation context is not available.") null } 3FTPVSDF3FBEFSBOESPJE
9. Τϥʔ͕ൃੜ͍ͯ͠ΔՕॴ internal val androidContext get() = AndroidContextProvider.ANDROID_CONTEXT internal class AndroidContextProvider : ContentProvider() { companion object { @SuppressLint("StaticFieldLeak") var ANDROID_CONTEXT: Context? = null } override fun onCreate(): Boolean { ANDROID_CONTEXT = context return true } "OESPJE$POUFYU1SPWJEFS
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11. <༨ஊ>$POUFYUΛઃఆ͍ͯ͠Δίʔυ try { final java.lang.ClassLoader cl = c.getClassLoader(); LoadedApk packageInfo = peekPackageInfo(ai.packageName, true); if (packageInfo == null) { // System startup case. packageInfo = getSystemContext().mPackageInfo; } localProvider = packageInfo.getAppFactory() .instantiateProvider(cl, info.name); provider = localProvider.getIContentProvider(); if (provider == null) { Slog.e(TAG, "Failed to instantiate class " + info.name + " from sourceDir " + info.applicationInfo.sourceDir); return null; } if (DEBUG_PROVIDER) Slog.v( TAG, "Instantiating local provider " + info.name); // XXX Need to create the correct context for this provider. localProvider.attachInfo(c, info); } "DUJWJUZ5ISFBE
12. <௒௒௒༨ஊ>%FGBVMU*0T3FTPVSDF3FBEFS @ExperimentalResourceApi internal object DefaultIOsResourceReader : ResourceReader { private val composeResourcesDir: String by lazy { findComposeResourcesPath() } override suspend fun read(path: String): ByteArray { val data = readData(getPathInBundle(path)) return ByteArray(data.length.toInt()).apply { usePinned { memcpy(it.addressOf(0), data.bytes, data.length) } } } override suspend fun readPart(path: String, offset: Long, size: Long): ByteArray { val data = readData(getPathInBundle(path), offset, size) return ByteArray(data.length.toInt()).apply { usePinned { memcpy(it.addressOf(0), data.bytes, data.length) } } } ࣮૷͕͓΋Ζ͍
13. 1SFWJFX$POUFYU$PO fi HVSBUJPO& ff FDU /** * The function configures the android context * to be used for non-composable resource read functions * * e.g. `Res.readBytes(...)` * * Example usage: * ``` * @Preview * @Composable * fun MyPreviewComponent() { * PreviewContextConfigurationEffect() * //... * } * ``` */ @Composable fun PreviewContextConfigurationEffect() { if (LocalInspectionMode.current) { AndroidContextProvider.ANDROID_CONTEXT = LocalContext.current } } 1SFWJFXͷͱ͖͸"OESPJE$POUFYU1SPWJEFSͷ
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14. "OESPJE5FTU"QQ(SBQIͷطଘ࣮૷ internal interface AndroidTestAppGraph : TestAppGraph { @SingleIn(AppScope::class) @Provides fun provideContext(): Context { val testContext = ApplicationProvider.getApplicationContext<Context>() // Workaround for "Android context is not initialized" // FYI: https://youtrack.jetbrains.com/issue/CMP-6676/Android-context-is-not- initialized-when-removing-AndroidContextProvider val providerClass = Class.forName("org.jetbrains.compose.resources.AndroidContextProvider") val provider = providerClass.getDeclaredConstructor().newInstance() providerClass.getMethod("access\$setANDROID_CONTEXT\$cp", Context::class.java) .invoke(provider, testContext) return testContext } } ϦϨΫγϣϯΛ࢖༻ͯ͠
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19. "OESPJE5FTU"QQ(SBQIͷमਖ਼ internal interface AndroidTestAppGraph : TestAppGraph { val context: Context @SingleIn(AppScope::class) @Provides fun provideContext(): Context { val testContext = ApplicationProvider.getApplicationContext<Context>() // Workaround for "Android context is not initialized" // FYI: https://youtrack.jetbrains.com/issue/CMP-6676/Android-context-is-not-initialized-when-removing- AndroidContextProvider val providerClass = Class.forName("org.jetbrains.compose.resources.AndroidContextProvider") val provider = providerClass.getDeclaredConstructor().newInstance() providerClass.getMethod("access\$setANDROID_CONTEXT\$cp", Context::class.java) .invoke(provider, testContext) return testContext } } internal actual fun createTestAppGraph(): TestAppGraph { return createGraph<AndroidTestAppGraph>().also { // Ensure context is initialized before Compose UI tests it.context } }
20. "OESPJE5FTU"QQ(SBQIͷमਖ਼ internal interface AndroidTestAppGraph : TestAppGraph { val context: Context @SingleIn(AppScope::class) @Provides fun provideContext(): Context { val testContext = ApplicationProvider.getApplicationContext<Context>() // Workaround for "Android context is not initialized" // FYI: https://youtrack.jetbrains.com/issue/CMP-6676/Android-context-is-not-initialized-when-removing- AndroidContextProvider val providerClass = Class.forName("org.jetbrains.compose.resources.AndroidContextProvider") val provider = providerClass.getDeclaredConstructor().newInstance() providerClass.getMethod("access\$setANDROID_CONTEXT\$cp", Context::class.java) .invoke(provider, testContext) return testContext } } internal actual fun createTestAppGraph(): TestAppGraph { return createGraph<AndroidTestAppGraph>().also { // Ensure context is initialized before Compose UI tests it.context } } ࣮֬ʹQSPWJEF$POUFYU͕૸ΔΑ͏ʹ
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22. 5JNFUBCMF4DSFFO5FTU @RunWith(UiTestRunner::class) class TimetableScreenTest { val testAppGraph = createTimetableScreenTestGraph() @ComposeTest fun runTest() { describedBehaviors.forEach { behavior -> val robot = testAppGraph.timetableScreenRobotProvider() runComposeUiTest { behavior.execute(robot) } } }
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25. ͦͯ͠ḷΓண͍ͨ"OESPJE%BUB(SBQI @ContributesTo(DataScope::class) public interface AndroidDataGraph { @Provides public fun provideDataStorePathProducer(context: Context): DataStorePathProducer { return DataStorePathProducer { fileName -> context.cacheDir.resolve(fileName).path } } @Provides public fun provideHttpClient(json: Json): HttpClient { return HttpClient(OkHttp) { defaultKtorConfig(json) } } }
26. ͦͯ͠ḷΓண͍ͨ"OESPJE%BUB(SBQI @ContributesTo(DataScope::class) public interface AndroidDataGraph { @Provides public fun provideDataStorePathProducer(context: Context): DataStorePathProducer { return DataStorePathProducer { fileName -> context.cacheDir.resolve(fileName).path } } @Provides public fun provideHttpClient(json: Json): HttpClient { return HttpClient(OkHttp) { defaultKtorConfig(json) } } }
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29. मਖ਼Ҋ internal interface AndroidTestAppGraph : TestAppGraph { val context: Context @SingleIn(AppScope::class) @Provides fun provideContext(): Context { val testContext = ApplicationProvider.getApplicationContext<Context>() // Workaround for "Android context is not initialized" // FYI: https://youtrack.jetbrains.com/issue/CMP-6676/Android-context-is-not-initialized- when-removing-AndroidContextProvider val providerClass = Class.forName("org.jetbrains.compose.resources.AndroidContextProvider") val provider = providerClass.getDeclaredConstructor().newInstance() providerClass.getMethod("access\$setANDROID_CONTEXT\$cp", Context::class.java) .invoke(provider, testContext) return testContext } } ॳظઃఆͱґଘؔ܎ͷఏڙͱ͍͏
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30. मਖ਼Ҋ internal interface AndroidTestAppGraph : TestAppGraph { @SingleIn(AppScope::class) @Provides fun provideContext(): Context { return ApplicationProvider.getApplicationContext() } } private fun initializeAndroidContext() { val testContext = ApplicationProvider.getApplicationContext<Context>() val providerClass = Class.forName("org.jetbrains.compose.resources.AndroidContextProvider") val provider = providerClass.getDeclaredConstructor().newInstance() providerClass.getMethod("access\$setANDROID_CONTEXT\$cp", Context::class.java) .invoke(provider, testContext) } internal actual fun createTestAppGraph(): TestAppGraph { initializeAndroidContext() return createGraph<AndroidTestAppGraph>() } ॲཧΛ෼͚Δ
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