Baseline profile setup for the Catalog app and the published libraries.

baselineprofile/.gitignore

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

baselineprofile/build.gradle.kts

@@ -0,0 +1,63 @@
+@file:Suppress("UnstableApiUsage")
+
+import com.android.build.api.dsl.ManagedVirtualDevice
+
+plugins {
+    kotlin("android")
+    id("com.android.test")
+    id("androidx.baselineprofile")
+    id("org.jmailen.kotlinter")
+}
+
+android {
+    namespace = "kiwi.orbit.compose.baselineprofile"
+    compileSdk = libs.versions.compileSdk.get().toInt()
+
+    defaultConfig {
+        minSdk = 28 // required by the BaselineProfileRule
+        targetSdk = libs.versions.targetSdk.get().toInt()
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    lint {
+        abortOnError = true
+        warningsAsErrors = true
+    }
+
+    targetProjectPath = ":catalog"
+
+    testOptions {
+        animationsDisabled = true
+
+        managedDevices.devices {
+            create<ManagedVirtualDevice>("pixel6Api33") {
+                device = "Pixel 6"
+                apiLevel = 33
+                systemImageSource = "google-atd"
+            }
+        }
+    }
+}
+
+kotlinter {
+    reporters = arrayOf("json")
+}
+
+baselineProfile {
+    managedDevices += "pixel6Api33"
+    useConnectedDevices = false
+}
+
+dependencies {
+    implementation(projects.catalog.semantics)
+
+    implementation(libs.androidx.benchmark.macro)
+    implementation(libs.androidx.test.runner)
+    implementation(libs.androidx.test.uiAutomator)
+}

baselineprofile/src/main/kotlin/kiwi/orbit/baselineprofile/BaselineProfileGenerator.kt

@@ -0,0 +1,153 @@
+package kiwi.orbit.baselineprofile
+
+import androidx.benchmark.macro.MacrobenchmarkScope
+import androidx.benchmark.macro.junit4.BaselineProfileRule
+import androidx.test.filters.LargeTest
+import androidx.test.uiautomator.By
+import androidx.test.uiautomator.UiScrollable
+import androidx.test.uiautomator.UiSelector
+import androidx.test.uiautomator.Until
+import kiwi.orbit.compose.catalog.semantics.AlertScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.ButtonScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.DialogScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.MainScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.PillButtonScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.SelectFieldScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.SubScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.ToastScreenSemantics
+import kiwi.orbit.compose.catalog.semantics.TopAppBarScreenSemantics
+import org.junit.Rule
+import org.junit.Test
+
+/**
+ * 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,
+ * or directly with `generateBaselineProfile` Gradle task:
+ * ```
+ * ./gradlew :catalog:generateReleaseBaselineProfile -Pandroid.testInstrumentationRunnerArguments.androidx.benchmark.enabledRules=BaselineProfile
+ * ```
+ * 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.
+ **/
+@LargeTest
+internal class BaselineProfileGenerator {
+
+    private companion object {
+        const val TIMEOUT = 5000L
+    }
+
+    @get:Rule
+    val rule = BaselineProfileRule()
+
+    @Test
+    fun generate() {
+        rule.collect(
+            packageName = "kiwi.orbit.compose.catalog",
+            maxIterations = 5,
+            stableIterations = 2,
+        ) {
+            pressHome()
+            startActivityAndWait()
+
+            profileSubScreen(MainScreenSemantics.ColorsItemTag)
+            profileSubScreen(MainScreenSemantics.IconsItemTag)
+            profileSubScreen(MainScreenSemantics.IllustrationsItemTag)
+            profileSubScreen(MainScreenSemantics.TypographyItemTag)
+
+            profileSubScreen(MainScreenSemantics.AlertItemTag) {
+                device.findObject(By.res(AlertScreenSemantics.NormalTabTag)).click()
+                device.findObject(By.res(AlertScreenSemantics.SuppressedTabTag)).click()
+                device.findObject(By.res(AlertScreenSemantics.InlineTabTag)).click()
+            }
+            profileSubScreen(MainScreenSemantics.BadgeItemTag)
+            profileSubScreen(MainScreenSemantics.BadgeListItemTag)
+            profileSubScreen(MainScreenSemantics.ButtonItemTag) {
+                device.findObject(By.res(ButtonScreenSemantics.ButtonTabTag)).click()
+                device.findObject(By.res(ButtonScreenSemantics.ButtonLinkTabTag)).click()
+            }
+            profileSubScreen(MainScreenSemantics.CardItemTag)
+            profileSubScreen(MainScreenSemantics.CheckboxItemTag)
+            profileSubScreen(MainScreenSemantics.ChoiceTileItemTag)
+            profileSubScreen(MainScreenSemantics.CollapseItemTag)
+            profileSubScreen(MainScreenSemantics.DialogItemTag) {
+                device.findObject(By.res(DialogScreenSemantics.OrbitDialogButtonTag))
+                    .clickAndWait(Until.newWindow(), TIMEOUT)
+                device.pressBack()
+                device.findObject(By.res(DialogScreenSemantics.M3DialogButtonTag))
+                    .clickAndWait(Until.newWindow(), TIMEOUT)
+                device.pressBack()
+                device.findObject(By.res(DialogScreenSemantics.M3TimePickerButtonTag))
+                    .clickAndWait(Until.newWindow(), TIMEOUT)
+                device.pressBack()
+                device.findObject(By.res(DialogScreenSemantics.M3DatePickerButtonTag))
+                    .clickAndWait(Until.newWindow(), TIMEOUT)
+                device.pressBack()
+            }
+            profileSubScreen(MainScreenSemantics.EmptyStateItemTag)
+            profileSubScreen(MainScreenSemantics.KeyValueItemTag)
+            profileSubScreen(MainScreenSemantics.ListItemTag)
+            profileSubScreen(MainScreenSemantics.ListChoiceItemTag)
+            profileSubScreen(MainScreenSemantics.LoadingItemTag)
+            profileSubScreen(MainScreenSemantics.PillButtonItemTag) {
+                device.findObject(By.res(PillButtonScreenSemantics.ShowWithIconButtonTag)).click()
+            }
+            profileSubScreen(MainScreenSemantics.ProgressIndicatorItemTag)
+            profileSubScreen(MainScreenSemantics.RadioItemTag)
+            profileSubScreen(MainScreenSemantics.SeatItemTag)
+            profileSubScreen(MainScreenSemantics.SegmentedSwitchItemTag)
+            profileSubScreen(MainScreenSemantics.SelectFieldItemTag) {
+                device.findObject(By.res(SelectFieldScreenSemantics.CountrySelectFieldTag)).click() // open
+                device.findObject(By.res(SelectFieldScreenSemantics.CountrySelectFieldTag)).click() // close
+                Thread.sleep(1000L) // back navigation is blocked until the popup is fully closed
+            }
+            profileSubScreen(MainScreenSemantics.SliderItemTag)
+            profileSubScreen(MainScreenSemantics.StepperItemTag)
+            profileSubScreen(MainScreenSemantics.SurfaceCardItemTag)
+            profileSubScreen(MainScreenSemantics.SwitchItemTag)
+            profileSubScreen(MainScreenSemantics.TabsItemTag)
+            profileSubScreen(MainScreenSemantics.TagItemTag)
+            profileSubScreen(MainScreenSemantics.TextFieldItemTag)
+            profileSubScreen(MainScreenSemantics.TileItemTag)
+            profileSubScreen(MainScreenSemantics.TileGroupItemTag)
+            profileSubScreen(MainScreenSemantics.TimelineItemTag)
+            profileSubScreen(MainScreenSemantics.ToastItemTag) {
+                device.findObject(By.res(ToastScreenSemantics.ToastSignedInButtonTag)).click()
+            }
+            profileSubScreen(MainScreenSemantics.TopAppBarItemTag) {
+                device.findObject(By.res(TopAppBarScreenSemantics.NormalSimpleButtonTag)).click()
+                device.wait(Until.hasObject(By.res(TopAppBarScreenSemantics.NormalSimpleScreenTag)), TIMEOUT)
+                device.pressBack()
+                device.wait(Until.hasObject(By.res(SubScreenSemantics.Tag)), TIMEOUT)
+                device.findObject(By.res(TopAppBarScreenSemantics.LargeSimpleButtonTag)).click()
+                device.wait(Until.hasObject(By.res(TopAppBarScreenSemantics.LargeSimpleScreenTag)), TIMEOUT)
+                device.pressBack()
+            }
+        }
+    }
+
+    private fun MacrobenchmarkScope.profileSubScreen(
+        mainScreenItemTag: String,
+        profileContent: MacrobenchmarkScope.() -> Unit = {},
+    ) {
+        val mainScreenScrollable = UiScrollable(UiSelector().scrollable(true))
+        mainScreenScrollable.scrollIntoView(UiSelector().resourceId(mainScreenItemTag))
+        device.wait(Until.hasObject(By.res(mainScreenItemTag)), TIMEOUT)
+
+        device.findObject(By.res(mainScreenItemTag)).click()
+        device.wait(Until.hasObject(By.res(SubScreenSemantics.Tag)), TIMEOUT)
+
+        profileContent()
+
+        device.pressBack()
+        device.wait(Until.hasObject(By.res(MainScreenSemantics.Tag)), TIMEOUT)
+    }
+}

baselineprofile/src/main/kotlin/kiwi/orbit/baselineprofile/StartupBenchmarks.kt

@@ -0,0 +1,59 @@
+package kiwi.orbit.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.filters.LargeTest
+import org.junit.Rule
+import org.junit.Test
+
+/**
+ * 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 with this Gradle task:
+ * ```
+ * ./gradlew :baselineprofile:connectedAndroidTest -Pandroid.testInstrumentationRunnerArguments.androidx.benchmark.enabledRules=Macrobenchmark
+ * ```
+ *
+ * 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).
+ **/
+@LargeTest
+internal 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) {
+        rule.measureRepeated(
+            packageName = "kiwi.orbit.compose.catalog",
+            metrics = listOf(StartupTimingMetric()),
+            compilationMode = compilationMode,
+            startupMode = StartupMode.COLD,
+            iterations = 10,
+            setupBlock = { pressHome() },
+        ) {
+            startActivityAndWait()
+        }
+    }
+}

build.gradle.kts

@@ -14,6 +14,8 @@ plugins {
     kotlin("multiplatform") version "1.9.10" apply false
     kotlin("plugin.serialization") version "1.9.10" apply false
     id("com.android.library") version "8.1.1" apply false
+    id("com.android.test") version "8.1.1" apply false
+    id("androidx.baselineprofile") version "1.2.0-beta01" apply false
     id("app.cash.paparazzi") version "1.3.1" apply false
     id("com.google.firebase.appdistribution") version "4.0.0" apply false
     id("com.vanniktech.maven.publish.base") version "0.25.3" apply false

catalog/build.gradle.kts

@@ -7,6 +7,7 @@ plugins {
     kotlin("android")
     kotlin("plugin.serialization")
     id("com.android.application")
+    id("androidx.baselineprofile")
     id("org.jmailen.kotlinter")
     id("com.google.firebase.appdistribution")
     kotlin("plugin.parcelize")
@@ -127,6 +128,7 @@ dependencies {
     implementation(projects.ui)
     implementation(projects.icons)
     implementation(projects.illustrations)
+    implementation(projects.catalog.semantics)
 
     implementation(libs.androidx.core)
     implementation(libs.androidx.activityCompose)
@@ -152,12 +154,14 @@ dependencies {
     implementation(libs.accompanist.systemController)
     implementation(libs.kiwi.navigationComposeTyped)
 
+    baselineProfile(projects.baselineprofile)
+
     coreLibraryDesugaring(libs.android.desugarJdk)
 
     debugImplementation(libs.compose.tooling)
     debugImplementation(libs.androidx.customView)
     debugImplementation(libs.androidx.customViewPoolingContainer)
 
     lintChecks(libs.slack.composeLintChecks)
-    lintChecks(project(":lint"))
+    lintChecks(projects.lint)
 }

catalog/semantics/.gitignore

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

catalog/semantics/build.gradle.kts

@@ -0,0 +1,28 @@
+plugins {
+    kotlin("android")
+    id("com.android.library")
+    id("org.jmailen.kotlinter")
+}
+
+android {
+    namespace = "kiwi.orbit.compose.catalog.semantics"
+    compileSdk = libs.versions.compileSdk.get().toInt()
+
+    defaultConfig {
+        minSdk = libs.versions.minSdk.get().toInt()
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    lint {
+        abortOnError = true
+        warningsAsErrors = true
+    }
+}
+
+kotlinter {
+    reporters = arrayOf("json")
+}

catalog/semantics/src/main/kotlin/kiwi/orbit/compose/catalog/semantics/AlertScreenSemantics.kt

@@ -0,0 +1,7 @@
+package kiwi.orbit.compose.catalog.semantics
+
+object AlertScreenSemantics {
+    const val NormalTabTag = "alert_screen_normal_tab_tag"
+    const val SuppressedTabTag = "alert_screen_suppressed_tab_tag"
+    const val InlineTabTag = "alert_screen_inline_tab_tag"
+}

catalog/semantics/src/main/kotlin/kiwi/orbit/compose/catalog/semantics/ButtonScreenSemantics.kt

@@ -0,0 +1,6 @@
+package kiwi.orbit.compose.catalog.semantics
+
+object ButtonScreenSemantics {
+    const val ButtonTabTag = "button_screen_button_tab_tag"
+    const val ButtonLinkTabTag = "button_screen_button_link_tab_tag"
+}