Add snippet for screenshot test (#710)

* Add snippet for screenshot test

* Apply Spotless

---------

Co-authored-by: kul3r4 <820891+kul3r4@users.noreply.github.com>

Author: kul3r4

build.gradle.kts

@@ -14,6 +14,7 @@ plugins {
     alias(libs.plugins.android.kotlin.multiplatform.library) apply false
     alias(libs.plugins.android.lint) apply false
     alias(libs.plugins.spotless) apply false
+    alias(libs.plugins.roborazzi) apply false
 }
 
 allprojects {

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ android-googleid = "1.1.1"
 androidGradlePlugin = "8.13.0"
 androidx-activity-compose = "1.11.0"
 androidx-appcompat = "1.7.0"
-androidx-compose-bom = "2025.10.01"
+androidx-compose-bom = "2025.11.01"
 androidx-compose-ui-test = "1.7.0-alpha08"
 androidx-compose-ui-test-junit4-accessibility = "1.10.0-beta01"
 androidx-constraintlayout = "2.2.1"
@@ -37,8 +37,8 @@ appcompat = "1.7.1"
 coil = "2.7.0"
 # @keep
 compileSdk = "36"
-compose-latest = "1.9.4"
-composeUiTooling = "1.5.4"
+compose-latest = "1.9.5"
+composeUiTooling = "1.5.5"
 coreSplashscreen = "1.2.0"
 coroutines = "1.10.2"
 dataStore = "1.1.7"
@@ -76,6 +76,8 @@ protoc = "0.9.5"
 protolayout = "1.3.0"
 reactive-streams = "1.0.4"
 recyclerview = "1.4.0"
+robolectric = "4.16"
+roborazzi = "1.52.0"
 spotless = "8.0.0"
 targetSdk = "36"
 tiles = "1.5.0"
@@ -84,9 +86,9 @@ validatorPush = "1.0.0-alpha08"
 version-catalog-update = "1.0.1"
 watchfaceComplicationsDataSourceKtx = "1.2.1"
 wear = "1.3.0"
-wearComposeFoundation = "1.5.4"
-wearComposeMaterial = "1.5.4"
-wearComposeMaterial3 = "1.5.4"
+wearComposeFoundation = "1.5.5"
+wearComposeMaterial = "1.5.5"
+wearComposeMaterial3 = "1.5.5"
 wearInput = "1.2.0"
 wearOngoing = "1.1.0"
 wearToolingPreview = "1.0.0"
@@ -209,6 +211,11 @@ hilt-android = { module = "com.google.dagger:hilt-android", version.ref = "hilt"
 hilt-compiler = { module = "com.google.dagger:hilt-android-compiler", version.ref = "hilt" }
 horologist-compose-layout = { module = "com.google.android.horologist:horologist-compose-layout", version.ref = "horologist" }
 horologist-compose-material = { module = "com.google.android.horologist:horologist-compose-material", version.ref = "horologist" }
+horologist-roboscreenshots = { module = "com.google.android.horologist:horologist-roboscreenshots", version.ref = "horologist" }
+robolectric = { module = "org.robolectric:robolectric", version.ref = "robolectric" }
+roborazzi = { group = "io.github.takahirom.roborazzi", name = "roborazzi", version.ref = "roborazzi" }
+roborazzi-compose = { group = "io.github.takahirom.roborazzi", name = "roborazzi-compose", version.ref = "roborazzi" }
+roborazzi-rule = { group = "io.github.takahirom.roborazzi", name = "roborazzi-junit-rule", version.ref = "roborazzi" }
 jetbrains-kotlin-stdlib = { module = "org.jetbrains.kotlin:kotlin-stdlib", version.ref = "kotlin" }
 junit = { module = "junit:junit", version.ref = "junit" }
 kotlin-coroutines-okhttp = { module = "ru.gildor.coroutines:kotlin-coroutines-okhttp", version.ref = "kotlinCoroutinesOkhttp" }
@@ -239,5 +246,6 @@ kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref
 kotlin-parcelize = { id = "org.jetbrains.kotlin.plugin.parcelize", version.ref = "kotlin" }
 kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
+roborazzi = { id = "io.github.takahirom.roborazzi", version.ref = "roborazzi" }
 spotless = { id = "com.diffplug.spotless", version.ref = "spotless" }
 version-catalog-update = { id = "nl.littlerobots.version-catalog-update", version.ref = "version-catalog-update" }

wear/build.gradle.kts

@@ -1,7 +1,10 @@
+import org.gradle.internal.classpath.Instrumented.systemProperty
+
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
     alias(libs.plugins.compose.compiler)
+    alias(libs.plugins.roborazzi)
 }
 
 android {
@@ -30,11 +33,11 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
     }
     kotlin {
-        jvmToolchain(17)
+        jvmToolchain(21)
     }
 
     buildFeatures {
@@ -47,7 +50,13 @@ android {
         }
     }
     kotlinOptions {
-        jvmTarget = "17"
+        jvmTarget = "21"
+    }
+
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+        }
     }
 }
 
@@ -89,17 +98,31 @@ dependencies {
     implementation(libs.horologist.compose.material)
     implementation(libs.androidx.material.icons.core)
     implementation(libs.androidx.watchface.complications.data.source.ktx)
+    implementation(libs.androidx.compose.ui.test.manifest)
 
-    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
-    debugImplementation(libs.androidx.compose.ui.tooling)
-    debugImplementation(libs.androidx.compose.ui.tooling.preview)
-    debugImplementation(libs.androidx.compose.ui.test.manifest)
+    // Testing
+    testImplementation(libs.androidx.compose.ui.test.junit4)
     testImplementation(libs.junit)
+    testImplementation(libs.robolectric)
+    testImplementation(libs.roborazzi)
+    testImplementation(libs.roborazzi.compose)
+    testImplementation(libs.roborazzi.rule)
+    testImplementation(libs.horologist.roboscreenshots)
+    testImplementation(libs.androidx.test.core)
+    testImplementation(libs.androidx.test.runner)
+    testImplementation(libs.androidx.compose.ui.test.manifest)
 
     androidTestImplementation(libs.junit)
     androidTestImplementation(libs.androidx.test.core)
     androidTestImplementation(libs.androidx.test.runner)
     androidTestImplementation(libs.androidx.test.espresso.core)
+    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
     androidTestImplementation(libs.androidx.compose.ui.test)
+    androidTestImplementation(libs.androidx.compose.ui.test.manifest)
+
+    debugImplementation(composeBom)
     debugImplementation(libs.androidx.compose.ui.tooling)
-}
+    debugImplementation(libs.androidx.compose.ui.tooling.preview)
+    debugImplementation(libs.androidx.compose.ui.test.manifest)
+
+}

wear/src/test/java/com/example/wear/snippets/m3/list/ListTest.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.wear.snippets.m3.list
+
+import com.google.android.horologist.compose.layout.AppScaffold
+import com.google.android.horologist.screenshots.rng.WearDevice
+import com.google.android.horologist.screenshots.rng.WearScreenshotTest
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.ParameterizedRobolectricTestRunner
+
+// [START android_wear_screenshot_test]
+@RunWith(ParameterizedRobolectricTestRunner::class)
+class ComposeListScreenTest(
+    override val device: WearDevice
+) : WearScreenshotTest() {
+    override val tolerance = 0.02f
+
+    @Test
+    fun myScreenTest() =
+        runTest {
+            AppScaffold {
+                ComposeList()
+            }
+        }
+
+    companion object {
+        @JvmStatic
+        @ParameterizedRobolectricTestRunner.Parameters
+        fun devices() = WearDevice.entries
+    }
+}
+// [END android_wear_screenshot_test]