test: Add basic composeui integration testing module

Signed-off-by: utzcoz <[email protected]>

build.gradle.kts

@@ -26,6 +26,7 @@ plugins {
   alias(libs.plugins.robolectric.spotless)
   alias(libs.plugins.robolectric.javadoc)
   alias(libs.plugins.roborazzi) apply false
+  alias(libs.plugins.compose.compiler) apply false
 }
 
 allprojects {

gradle/libs.versions.toml

@@ -122,6 +122,9 @@ androidx-test-monitor = "1.7.2"
 androidx-test-runner = "1.6.2"
 androidx-test-services = "1.5.0"
 
+# https://developer.android.com/jetpack/androidx/releases/compose
+androidx-compose-bom = "2024.10.01"
+
 # for shadows/playservices/build.gradle
 androidx-fragment-for-shadows = "1.2.0"
 play-services-for-shadows = "17.0.0"
@@ -230,6 +233,13 @@ androidx-test-espresso-intents = { module = "androidx.test.espresso:espresso-int
 androidx-test-ext-junit = { module = "androidx.test.ext:junit", version.ref = "androidx-test-ext-junit" }
 androidx-test-ext-truth = { module = "androidx.test.ext:truth", version.ref = "androidx-test-ext-truth" }
 
+androidx-compose-bom = { module = "androidx.compose:compose-bom", version.ref = "androidx-compose-bom" }
+androidx-compose-ui = { module = "androidx.compose.ui:ui" }
+androidx-compose-ui-test-junit4 = { module = "androidx.compose.ui:ui-test-junit4" }
+androidx-compose-ui-test-manifest = { module = "androidx.compose.ui:ui-test-manifest" }
+androidx-compose-ui-tooling = { module = "androidx.compose.ui:ui-tooling" }
+androidx-compose-material3 = { module = "androidx.compose.material3:material3" }
+
 androidx-fragment-for-shadows = { module = "androidx.fragment:fragment", version.ref = "androidx-fragment-for-shadows" }
 play-services-auth-for-shadows = { module = "com.google.android.gms:play-services-auth", version.ref = "play-services-for-shadows" }
 play-services-base-for-shadows = { module = "com.google.android.gms:play-services-base", version.ref = "play-services-for-shadows" }
@@ -256,6 +266,7 @@ jacoco = { id = "jacoco" }
 java = { id = "java" }
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
+compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
 robolectric-android-project = { id = "org.robolectric.gradle.AndroidProjectConfigPlugin" }
 robolectric-deployed-java-module = { id = "org.robolectric.gradle.DeployedRoboJavaModulePlugin" }
 robolectric-gradle-managed-device = { id = "org.robolectric.gradle.GradleManagedDevicePlugin" }

integration_tests/composeui/build.gradle.kts

@@ -0,0 +1,50 @@
+plugins {
+  alias(libs.plugins.android.library)
+  alias(libs.plugins.compose.compiler)
+  alias(libs.plugins.detekt)
+  alias(libs.plugins.kotlin.android)
+  alias(libs.plugins.robolectric.android.project)
+  alias(libs.plugins.robolectric.spotless)
+}
+
+android {
+  namespace = "org.robolectric.integrationtests.composeui"
+  compileSdk = 35
+
+  defaultConfig { minSdk = 21 }
+
+  compileOptions {
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
+  }
+
+  kotlinOptions { jvmTarget = "11" }
+
+  buildFeatures { compose = true }
+
+  testOptions {
+    targetSdk = 35
+    unitTests { isIncludeAndroidResources = true }
+  }
+
+  androidComponents {
+    beforeVariants(selector().all()) { variantBuilder ->
+      // composeui does not support AndroidTest now.
+      variantBuilder.enableAndroidTest = false
+    }
+  }
+}
+
+dependencies {
+  implementation(platform(libs.androidx.compose.bom))
+  implementation(libs.androidx.compose.ui)
+  implementation(libs.androidx.compose.material3)
+
+  debugImplementation(libs.androidx.compose.ui.tooling)
+  debugImplementation(libs.androidx.compose.ui.test.manifest)
+
+  testImplementation(project(":robolectric"))
+  testImplementation(libs.junit4)
+  testImplementation(libs.truth)
+  testImplementation(libs.androidx.compose.ui.test.junit4)
+}

integration_tests/composeui/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest />

integration_tests/composeui/src/test/java/org/robolectric/integrationtests/composeui/FontTest.kt

@@ -0,0 +1,57 @@
+package org.robolectric.integrationtests.composeui
+
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.semantics.SemanticsProperties.EditableText
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.semantics.testTag
+import androidx.compose.ui.test.junit4.createComposeRule
+import androidx.compose.ui.test.onNodeWithTag
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.input.TextFieldValue
+import com.google.common.truth.Truth.assertThat
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+/** The test file for ComposeUI's Font compatibility with Robolectric. */
+@RunWith(RobolectricTestRunner::class)
+@Config(instrumentedPackages = ["androidx.loader.content"])
+class FontTest {
+  @get:Rule val rule = createComposeRule()
+
+  @Test
+  fun `TextField's default value is expected`() {
+    rule.setContent { NumberInput() }
+
+    with(rule) {
+      onNodeWithTag(TAG_NUMBER_INPUT).fetchSemanticsNode().run {
+        assertThat(config[EditableText].text).isEqualTo(TEXT_CUSTOM_NUMBER)
+      }
+    }
+  }
+
+  @Composable
+  fun NumberInput() {
+    var text by remember { mutableStateOf(TextFieldValue(TEXT_CUSTOM_NUMBER)) }
+
+    TextField(
+      modifier = Modifier.semantics { testTag = TAG_NUMBER_INPUT },
+      value = text,
+      textStyle = TextStyle.Default,
+      onValueChange = { newText -> text = newText },
+    )
+  }
+
+  companion object {
+    const val TAG_NUMBER_INPUT = "number_input"
+    const val TEXT_CUSTOM_NUMBER = "123456789"
+  }
+}

settings.gradle.kts

@@ -22,6 +22,7 @@ include(
   ":errorprone",
   ":integration_tests:androidx",
   ":integration_tests:androidx_test",
+  ":integration_tests:composeui",
   ":integration_tests:ctesque",
   ":integration_tests:dependency-on-stubs",
   ":integration_tests:jacoco-offline",