Enable screenshot testing for all modules.

app/build.gradle.kts

@@ -18,7 +18,7 @@ plugins {
   alias(libs.plugins.ktlint)
   alias(libs.plugins.compose.compiler)
   alias(libs.plugins.kotlinx.serialization)
-  alias(testLibs.plugins.compose.screenshot)
+  id("com.android.compose.screenshot")
   alias(benchmarkLibs.plugins.baselineprofile)
   id("androidx.navigation.safeargs")
   id("kotlin-parcelize")

build-logic/plugins/build.gradle.kts

@@ -22,6 +22,7 @@ dependencies {
   implementation(libs.kotlin.gradle.plugin)
   implementation(libs.android.library)
   implementation(libs.android.application)
+  implementation(testLibs.compose.screenshot.plugin)
   implementation(libs.ktlint)
   implementation(project(":tools"))
 

build-logic/plugins/src/main/java/signal-library.gradle.kts

@@ -72,3 +72,18 @@ dependencies {
   testImplementation(testLibs.androidx.test.core)
   testImplementation(testLibs.androidx.test.core.ktx)
 }
+
+// Enable screenshot testing for modules that use compose
+plugins.withId("org.jetbrains.kotlin.plugin.compose") {
+  android {
+    experimentalProperties["android.experimental.enableScreenshotTest"] = true
+  }
+
+  apply(plugin = "com.android.compose.screenshot")
+
+  dependencies {
+    add("screenshotTestImplementation", testLibs.compose.screenshot.validation.api)
+    add("screenshotTestImplementation", libs.androidx.compose.ui.tooling.core)
+    add("screenshotTestImplementation", libs.androidx.compose.ui.tooling.preview)
+  }
+}

build-logic/plugins/src/main/java/signal-sample-app.gradle.kts

@@ -78,3 +78,18 @@ dependencies {
   testImplementation(testLibs.androidx.test.core)
   testImplementation(testLibs.androidx.test.core.ktx)
 }
+
+// Enable screenshot testing for modules that use compose
+plugins.withId("org.jetbrains.kotlin.plugin.compose") {
+  android {
+    experimentalProperties["android.experimental.enableScreenshotTest"] = true
+  }
+
+  apply(plugin = "com.android.compose.screenshot")
+
+  dependencies {
+    add("screenshotTestImplementation", testLibs.compose.screenshot.validation.api)
+    add("screenshotTestImplementation", libs.androidx.compose.ui.tooling.core)
+    add("screenshotTestImplementation", libs.androidx.compose.ui.tooling.preview)
+  }
+}

build.gradle.kts

@@ -140,7 +140,11 @@ gradle.projectsEvaluated {
 
   tasks.named("validateScreenshots") {
     subprojects.filter { it.name != "Signal-Android" }.forEach { subproject ->
-      subproject.tasks.findByName("validateDebugScreenshotTest")?.let { dependsOn(it) }
+      // All modules get screenshotTests enabled by default, but the validate task fails if there's no tests.
+      // So we just filter out the modules that have no tests ourselves.
+      if (subproject.file("src/screenshotTest").isDirectory) {
+        subproject.tasks.findByName("validateDebugScreenshotTest")?.let { dependsOn(it) }
+      }
     }
   }
 

feature/registration/build.gradle.kts

@@ -4,7 +4,6 @@ plugins {
   id("com.squareup.wire")
   alias(libs.plugins.compose.compiler)
   alias(libs.plugins.kotlinx.serialization)
-  alias(testLibs.plugins.compose.screenshot)
 }
 
 android {
@@ -24,8 +23,6 @@ android {
       isIncludeAndroidResources = true
     }
   }
-
-  experimentalProperties["android.experimental.enableScreenshotTest"] = true
 }
 
 screenshotTests {
@@ -112,9 +109,4 @@ dependencies {
   androidTestImplementation(testLibs.androidx.test.ext.junit)
   androidTestImplementation(libs.androidx.compose.ui.test.junit4)
   debugImplementation(libs.androidx.compose.ui.test.manifest)
-
-  // Compose screenshot testing
-  screenshotTestImplementation(testLibs.compose.screenshot.validation.api)
-  screenshotTestImplementation(libs.androidx.compose.ui.tooling.core)
-  screenshotTestImplementation(libs.androidx.compose.ui.tooling.preview)
 }

gradle/test-libs.versions.toml

@@ -12,6 +12,7 @@ compose-screenshot = "0.0.1-alpha15"
 compose-screenshot = { id = "com.android.compose.screenshot", version.ref = "compose-screenshot" }
 
 [libraries]
+compose-screenshot-plugin = { module = "com.android.compose.screenshot:com.android.compose.screenshot.gradle.plugin", version.ref = "compose-screenshot" }
 compose-screenshot-validation-api = { module = "com.android.tools.screenshot:screenshot-validation-api", version.ref = "compose-screenshot" }
 junit-junit = "junit:junit:4.13.2"
 androidx-test-core = { module = "androidx.test:core", version.ref = "androidx-test" }