add macrobenchmark and trace generation

app/benchmark/.gitignore

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

app/benchmark/build.gradle.kts

@@ -0,0 +1,56 @@
+plugins {
+    id("com.android.test")
+    id("org.jetbrains.kotlin.android")
+}
+
+android {
+    namespace = "net.composegridperformance.benchmark"
+    compileSdk = 34
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+
+    defaultConfig {
+        minSdk = 24
+        targetSdk = 34
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunnerArguments["androidx.benchmark.perfettoSdkTracing.enable"] = "true"
+
+    }
+
+    buildTypes {
+        // This benchmark buildType is used for benchmarking, and should function like your
+        // release build (for example, with minification on). It"s signed with a debug key
+        // for easy local/CI testing.
+        create("release") {
+            isDebuggable = true
+            signingConfig = getByName("debug").signingConfig
+            matchingFallbacks += listOf("release")
+        }
+    }
+
+    targetProjectPath = ":app"
+    experimentalProperties["android.experimental.self-instrumenting"] = true
+}
+
+dependencies {
+    implementation("androidx.test.ext:junit:1.1.5")
+    implementation("androidx.test.espresso:espresso-core:3.5.1")
+    implementation("androidx.test.uiautomator:uiautomator:2.2.0")
+    implementation("androidx.benchmark:benchmark-macro-junit4:1.2.2")
+    implementation("androidx.tracing:tracing-perfetto:1.0.0")
+    implementation("androidx.tracing:tracing-perfetto-binary:1.0.0")
+}
+
+androidComponents {
+    beforeVariants(selector().all()) {
+        it.enable = it.buildType == "release"
+    }
+}

app/benchmark/src/main/AndroidManifest.xml

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

app/benchmark/src/main/java/net/composegridperformance/benchmark/ScrollBenchmark.kt

@@ -0,0 +1,80 @@
+package net.composegridperformance.benchmark
+
+import android.util.TypedValue
+import androidx.benchmark.macro.CompilationMode
+import androidx.benchmark.macro.FrameTimingMetric
+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.platform.app.InstrumentationRegistry
+import androidx.test.uiautomator.By
+import androidx.test.uiautomator.Until
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import kotlin.math.roundToInt
+
+/**
+ * This is an example startup benchmark.
+ *
+ * It navigates to the device's home screen, and launches the default activity.
+ *
+ * Before running this benchmark:
+ * 1) switch your app's active build variant in the Studio (affects Studio runs only)
+ * 2) add `<profileable android:shell="true" />` to your app's manifest, within the `<application>` tag
+ *
+ * Run this benchmark from Studio to see startup measurements, and captured system traces
+ * for investigating your app's performance.
+ */
+@RunWith(AndroidJUnit4::class)
+class ScrollBenchmark {
+    @get:Rule
+    val benchmarkRule = MacrobenchmarkRule()
+
+    @Test
+    fun scrollImageList() = benchmarkRule.measureRepeated(
+        packageName = "net.composegridperformance",
+        metrics = listOf(FrameTimingMetric()),
+        iterations = 5,
+        startupMode = StartupMode.WARM,
+        setupBlock = {
+            pressHome()
+            startActivityAndWait()
+
+            device.wait(Until.findObject(By.text("Image List (Coil)")), 10_000)
+            device.findObject(By.text("Image List (Coil)")).click()
+
+            Thread.sleep(500)
+        }
+
+    ) {
+        val scrollOffset = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP,
+            SCROLL_LENGTH_DP,
+            InstrumentationRegistry.getInstrumentation().context.resources.displayMetrics
+        ).roundToInt()
+
+        device.swipe(
+            /* startX = */ device.displayWidth / 2,
+            /* startY = */ device.displayHeight / 2 + scrollOffset / 2,
+            /* endX = */ device.displayWidth / 2,
+            /* endY = */ device.displayHeight / 2 - scrollOffset / 2,
+            /* steps = */ SCROLL_STEPS
+        )
+        Thread.sleep(SCROLL_SLEEP)
+
+        device.swipe(
+            /* startX = */ device.displayWidth / 2,
+            /* startY = */ device.displayHeight / 2 - scrollOffset / 2,
+            /* endX = */ device.displayWidth / 2,
+            /* endY = */ device.displayHeight / 2 + scrollOffset / 2,
+            /* steps = */ SCROLL_STEPS
+        )
+        Thread.sleep(SCROLL_SLEEP)
+    }
+}
+
+private const val SCROLL_SLEEP = 1000L
+private const val SCROLL_STEPS = 3
+private const val SCROLL_LENGTH_DP = 1000f

app/build.gradle.kts

@@ -34,6 +34,11 @@ android {
                 "proguard-rules.pro"
             )
         }
+        create("benchmark") {
+            initWith(buildTypes.getByName("release"))
+            matchingFallbacks += listOf("release")
+            isDebuggable = false
+        }
     }
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17
@@ -70,6 +75,7 @@ dependencies {
     implementation("androidx.compose.ui:ui-tooling-preview")
     implementation("androidx.compose.material3:material3")
     implementation("androidx.profileinstaller:profileinstaller:1.3.1")
+    implementation("androidx.compose.runtime:runtime-tracing:1.0.0-beta01")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
@@ -98,4 +104,4 @@ dependencies {
     // Network
     implementation ("com.squareup.retrofit2:retrofit:2.9.0")
     implementation ("com.squareup.retrofit2:converter-moshi:2.9.0")
-}
+}

app/src/main/AndroidManifest.xml

@@ -1,28 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools">
+        xmlns:tools="http://schemas.android.com/tools">
 
-    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <application
-        android:name=".MainApplication"
-        android:allowBackup="true"
-        android:dataExtractionRules="@xml/data_extraction_rules"
-        android:fullBackupContent="@xml/backup_rules"
-        android:icon="@mipmap/ic_launcher"
-        android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
-        android:supportsRtl="true"
-        android:theme="@style/Theme.ComposeGridPerformance"
-        tools:targetApi="31">
-
-        <profileable android:shell="true"/>
+            android:name=".MainApplication"
+            android:allowBackup="true"
+            android:dataExtractionRules="@xml/data_extraction_rules"
+            android:fullBackupContent="@xml/backup_rules"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round"
+            android:supportsRtl="true"
+            android:theme="@style/Theme.ComposeGridPerformance"
+            tools:targetApi="31">
+        <profileable
+                android:shell="true"
+                tools:targetApi="29" />
 
         <activity
-            android:name=".MainActivity"
-            android:exported="true"
-            android:label="@string/app_name"
-            android:theme="@style/Theme.ComposeGridPerformance">
+                android:name=".MainActivity"
+                android:exported="true"
+                android:label="@string/app_name"
+                android:theme="@style/Theme.ComposeGridPerformance">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -31,4 +32,4 @@
         </activity>
     </application>
 
-</manifest>
+</manifest>

settings.gradle.kts

@@ -16,3 +16,4 @@ dependencyResolutionManagement {
 rootProject.name = "ComposeGridPerformance"
 include(":app")
 include(":app:baselineprofile")
+include(":app:benchmark")