Add a baseline profile

baselineprofile/.gitignore

@@ -0,0 +1 @@
+/build

baselineprofile/build.gradle.kts

@@ -0,0 +1,52 @@
+plugins {
+    alias(libs.plugins.android.test)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.baselineprofile)
+}
+
+android {
+    namespace = "org.kde.kdeconnect_tp.baselineprofile"
+    compileSdk = 34
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+
+    defaultConfig {
+        minSdk = 28
+        targetSdk = 34
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    targetProjectPath = ":"
+
+}
+
+// This is the configuration block for the Baseline Profile plugin.
+// You can specify to run the generators on a managed devices or connected devices.
+baselineProfile {
+    useConnectedDevices = true
+}
+
+dependencies {
+    implementation(libs.androidx.junit)
+    implementation(libs.androidx.espresso.core)
+    implementation(libs.androidx.uiautomator)
+    implementation(libs.androidx.benchmark.macro.junit4)
+}
+
+androidComponents {
+    onVariants { v ->
+        val artifactsLoader = v.artifacts.getBuiltArtifactsLoader()
+        v.instrumentationRunnerArguments.put(
+            "targetAppId",
+            v.testedApks.map { artifactsLoader.load(it)?.applicationId }
+        )
+    }
+}

baselineprofile/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest />

baselineprofile/src/main/java/baselineprofile/BaselineProfileGenerator.kt

@@ -0,0 +1,68 @@
+package baselineprofile
+
+import androidx.benchmark.macro.junit4.BaselineProfileRule
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.LargeTest
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * This test class generates a basic startup baseline profile for the target package.
+ *
+ * We recommend you start with this but add important user flows to the profile to improve their performance.
+ * Refer to the [baseline profile documentation](https://d.android.com/topic/performance/baselineprofiles)
+ * for more information.
+ *
+ * You can run the generator with the "Generate Baseline Profile" run configuration in Android Studio or
+ * the equivalent `generateBaselineProfile` gradle task:
+ * ```
+ * ./gradlew :kdeconnect-android:generateReleaseBaselineProfile
+ * ```
+ * The run configuration runs the Gradle task and applies filtering to run only the generators.
+ *
+ * Check [documentation](https://d.android.com/topic/performance/benchmarking/macrobenchmark-instrumentation-args)
+ * for more information about available instrumentation arguments.
+ *
+ * After you run the generator, you can verify the improvements running the [StartupBenchmarks] benchmark.
+ *
+ * When using this class to generate a baseline profile, only API 33+ or rooted API 28+ are supported.
+ *
+ * The minimum required version of androidx.benchmark to generate a baseline profile is 1.2.0.
+ **/
+@RunWith(AndroidJUnit4::class)
+@LargeTest
+class BaselineProfileGenerator {
+
+    @get:Rule
+    val rule = BaselineProfileRule()
+
+    @Test
+    fun generate() {
+        // The application id for the running build variant is read from the instrumentation arguments.
+        rule.collect(
+            packageName = InstrumentationRegistry.getArguments().getString("targetAppId")
+                ?: throw Exception("targetAppId not passed as instrumentation runner arg"),
+
+            // See: https://d.android.com/topic/performance/baselineprofiles/dex-layout-optimizations
+            includeInStartupProfile = true
+        ) {
+            // This block defines the app's critical user journey. Here we are interested in
+            // optimizing for app startup. But you can also navigate and scroll through your most important UI.
+
+            // Start default activity for your app
+            pressHome()
+            startActivityAndWait()
+
+            // TODO Write more interactions to optimize advanced journeys of your app.
+            // For example:
+            // 1. Wait until the content is asynchronously loaded
+            // 2. Scroll the feed content
+            // 3. Navigate to detail screen
+
+            // Check UiAutomator documentation for more information how to interact with the app.
+            // https://d.android.com/training/testing/other-components/ui-automator
+        }
+    }
+}

baselineprofile/src/main/java/baselineprofile/StartupBenchmarks.kt

@@ -0,0 +1,76 @@
+package baselineprofile
+
+import androidx.benchmark.macro.BaselineProfileMode
+import androidx.benchmark.macro.CompilationMode
+import androidx.benchmark.macro.StartupMode
+import androidx.benchmark.macro.StartupTimingMetric
+import androidx.benchmark.macro.junit4.MacrobenchmarkRule
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.LargeTest
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * This test class benchmarks the speed of app startup.
+ * Run this benchmark to verify how effective a Baseline Profile is.
+ * It does this by comparing [CompilationMode.None], which represents the app with no Baseline
+ * Profiles optimizations, and [CompilationMode.Partial], which uses Baseline Profiles.
+ *
+ * Run this benchmark to see startup measurements and captured system traces for verifying
+ * the effectiveness of your Baseline Profiles. You can run it directly from Android
+ * Studio as an instrumentation test, or run all benchmarks for a variant, for example benchmarkRelease,
+ * with this Gradle task:
+ * ```
+ * ./gradlew :baselineprofile:connectedBenchmarkReleaseAndroidTest
+ * ```
+ *
+ * You should run the benchmarks on a physical device, not an Android emulator, because the
+ * emulator doesn't represent real world performance and shares system resources with its host.
+ *
+ * For more information, see the [Macrobenchmark documentation](https://d.android.com/macrobenchmark#create-macrobenchmark)
+ * and the [instrumentation arguments documentation](https://d.android.com/topic/performance/benchmarking/macrobenchmark-instrumentation-args).
+ **/
+@RunWith(AndroidJUnit4::class)
+@LargeTest
+class StartupBenchmarks {
+
+    @get:Rule
+    val rule = MacrobenchmarkRule()
+
+    @Test
+    fun startupCompilationNone() =
+        benchmark(CompilationMode.None())
+
+    @Test
+    fun startupCompilationBaselineProfiles() =
+        benchmark(CompilationMode.Partial(BaselineProfileMode.Require))
+
+    private fun benchmark(compilationMode: CompilationMode) {
+        // The application id for the running build variant is read from the instrumentation arguments.
+        rule.measureRepeated(
+            packageName = InstrumentationRegistry.getArguments().getString("targetAppId")
+                ?: throw Exception("targetAppId not passed as instrumentation runner arg"),
+            metrics = listOf(StartupTimingMetric()),
+            compilationMode = compilationMode,
+            startupMode = StartupMode.COLD,
+            iterations = 10,
+            setupBlock = {
+                pressHome()
+            },
+            measureBlock = {
+                startActivityAndWait()
+
+                // TODO Add interactions to wait for when your app is fully drawn.
+                // The app is fully drawn when Activity.reportFullyDrawn is called.
+                // For Jetpack Compose, you can use ReportDrawn, ReportDrawnWhen and ReportDrawnAfter
+                // from the AndroidX Activity library.
+
+                // Check the UiAutomator documentation for more information on how to
+                // interact with the app.
+                // https://d.android.com/training/testing/other-components/ui-automator
+            }
+        )
+    }
+}

build.gradle.kts

@@ -15,6 +15,8 @@ plugins {
     alias(libs.plugins.kotlin.kapt)
     alias(libs.plugins.dependencyLicenseReport)
     alias(libs.plugins.compose.compiler)
+    alias(libs.plugins.android.test) apply false
+    alias(libs.plugins.baselineprofile)
 }
 
 val licenseResDir = File("$projectDir/build/dependency-license-res")
@@ -134,6 +136,9 @@ android {
 dependencies {
     coreLibraryDesugaring(libs.android.desugarJdkLibs)
 
+    implementation(libs.androidx.profileinstaller)
+    "baselineProfile"(project("baselineprofile"))
+
     implementation(libs.androidx.compose.material3)
     implementation(libs.androidx.compose.ui.tooling.preview)
     implementation(libs.androidx.activity.compose)

gradle/libs.versions.toml

@@ -36,6 +36,12 @@ swiperefreshlayout = "1.1.0"
 uiToolingPreview = "1.6.7"
 univocityParsers = "2.9.1"
 sl4j = "2.0.4"
+junitVersion = "1.1.5"
+espressoCore = "3.5.1"
+uiautomator = "2.3.0"
+benchmarkMacroJunit4 = "1.2.4"
+baselineprofile = "1.2.4"
+profileinstaller = "1.3.1"
 
 [libraries]
 android-desugarJdkLibs = { module = "com.android.tools:desugar_jdk_libs", version.ref = "androidDesugarJdkLibs" }
@@ -79,6 +85,11 @@ reactive-streams = { module = "org.reactivestreams:reactive-streams", version.re
 rxjava = { module = "io.reactivex.rxjava2:rxjava", version.ref = "rxjava" }
 univocity-parsers = { module = "com.univocity:univocity-parsers", version.ref = "univocityParsers" }
 slf4j-handroid = { group = "com.gitlab.mvysny.slf4j", name = "slf4j-handroid", version.ref = "sl4j" }
+androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+androidx-uiautomator = { group = "androidx.test.uiautomator", name = "uiautomator", version.ref = "uiautomator" }
+androidx-benchmark-macro-junit4 = { group = "androidx.benchmark", name = "benchmark-macro-junit4", version.ref = "benchmarkMacroJunit4" }
+androidx-profileinstaller = { group = "androidx.profileinstaller", name = "profileinstaller", version.ref = "profileinstaller" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "androidGradlePlugin" }
@@ -86,3 +97,5 @@ kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
 kotlin-kapt = { id = "org.jetbrains.kotlin.kapt", version.ref = "kotlin" }
 dependencyLicenseReport = { id = "com.github.jk1.dependency-license-report", version.ref = "dependencyLicenseReport" }
+android-test = { id = "com.android.test", version.ref = "androidGradlePlugin" }
+baselineprofile = { id = "androidx.baselineprofile", version.ref = "baselineprofile" }

settings.gradle.kts

@@ -21,3 +21,4 @@ dependencyResolutionManagement {
     }
 }
 rootProject.name = "kdeconnect-android"
+include(":baselineprofile")