[MPP] [Android] implement testAndroidMultiplatformPublicationAGPCompatibility

This test publishes a Multiplatform/Android library locally with
a given AGP version (7.1-*+) and tests the compatibility with older
AGP consumer versions.

Two projects will be tested:

multiplatformAndroidConsumer:
kotlin("multiplatform") + android target depending on
the previous publication as 'commonMainImplementation' dependency

plainAndroidConsumer:
kotlin("android") depending on the previous publication
as 'implementation' dependency.

Both projects will test the 'assemble' umbrella task to ensure,
compatibility with the given publication.

^KT-49798 implicitly covered as well

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/AbstractKotlinAndroidGradleTests.kt

@@ -536,6 +536,51 @@ open class KotlinAndroid71GradleIT : KotlinAndroid70GradleIT() {
             }
         }
     }
+
+    @Test
+    fun testAndroidMultiplatformPublicationAGPCompatibility() = with(Project("new-mpp-android-agp-compatibility")) {
+        /* Publish producer library with current version of AGP */
+        build(":producer:publishAllPublicationsToBuildDirRepository") {
+            assertSuccessful()
+
+            /* Check expected publication layout */
+            assertFileExists("build/repo/com/example/producer-android")
+            assertFileExists("build/repo/com/example/producer-android-debug")
+            assertFileExists("build/repo/com/example/producer-jvm")
+        }
+
+        val checkedConsumerAGPVersions = AGPVersion.testedVersions
+            // Special version added for testing KT-49798
+            .plus(AGPVersion.fromString("7.1.0-beta02"))
+            .filter { version -> version >= AGPVersion.v4_2_0 }
+
+        checkedConsumerAGPVersions.forEach { agpVersion ->
+
+            this.setupWorkingDir()
+            println("Testing compatibility for AGP consumer version $agpVersion")
+            val buildOptions = defaultBuildOptions().copy(androidGradlePluginVersion = agpVersion)
+
+            /*
+            Project: multiplatformAndroidConsumer is a mpp project with jvm and android targets.
+            This project depends on the previous publication as 'commonMainImplementation' dependency
+            */
+            build(":multiplatformAndroidConsumer:assemble", options = buildOptions) {
+                assertSuccessful(
+                    "multiplatformAndroidConsumer build failed with consumer agpVersion $agpVersion (Producer: $androidGradlePluginVersion)"
+                )
+            }
+
+            /*
+            Project: plainAndroidConsumer only uses the 'kotlin("android")' plugin
+            This project depends on the previous publication as 'implementation' dependency
+             */
+            build(":plainAndroidConsumer:assemble", options = buildOptions) {
+                assertSuccessful(
+                    "plainAndroidConsumer build failed with consumer agpVersion $agpVersion (Producer: $androidGradlePluginVersion)"
+                )
+            }
+        }
+    }
 }
 
 open class KotlinAndroid34GradleIT : KotlinAndroid3GradleIT() {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/BaseGradleIT.kt

@@ -455,11 +455,12 @@ abstract class BaseGradleIT {
         return model
     }
 
-    fun CompiledProject.assertSuccessful() {
+    fun CompiledProject.assertSuccessful(message: String? = null) {
         if (resultCode == 0) return
 
         val errors = "(?m)^.*\\[ERROR] \\[\\S+] (.*)$".toRegex().findAll(output)
         val errorMessage = buildString {
+            if (message != null) appendLine(message)
             appendLine("Gradle build failed")
             appendLine()
             if (errors.any()) {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/util/AGPVersion.kt

@@ -24,5 +24,7 @@ class AGPVersion private constructor(private val versionNumber: VersionNumber) {
         val v4_2_0 = fromString("4.2.0")
         val v7_0_0 = fromString("7.0.0-beta02")
         val v7_1_0 = fromString("7.1.0-beta03")
+
+        val testedVersions = listOf(v3_4_1, v3_6_0, v4_1_0, v4_2_0, v7_0_0, v7_1_0)
     }
 }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/build.gradle.kts

@@ -0,0 +1,11 @@
+allprojects {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        google()
+    }
+}
+
+tasks.register<Delete>("clean") {
+    delete(buildDir)
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/gradle.properties

@@ -0,0 +1,4 @@
+kotlin.code.style=official
+kotlin.js.generate.executable.default=false
+kotlin.mpp.enableGranularSourceSetsMetadata=true
+kotlin.native.enableDependencyPropagation=false

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/multiplatformAndroidConsumer/build.gradle.kts

@@ -0,0 +1,21 @@
+plugins {
+    id("com.android.library")
+    kotlin("multiplatform")
+}
+
+repositories {
+    maven(rootProject.buildDir.resolve("repo"))
+    mavenCentral()
+}
+
+android {
+    compileSdkVersion(30)
+}
+
+kotlin {
+    android()
+
+    sourceSets.commonMain.get().dependencies {
+        implementation("com.example:producer:1.0.0-SNAPSHOT")
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/multiplatformAndroidConsumer/src/commonMain/kotlin/MultiplatformAndroidConsumerCommonMain.kt

@@ -0,0 +1,7 @@
+@file:Suppress("unused")
+
+object MultiplatformAndroidConsumerCommonMain {
+    init {
+        println(ProducerCommonMain)
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/multiplatformAndroidConsumer/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest package="com.example.plainAndroidConsumer"/>

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/multiplatformAndroidConsumer/src/main/java/MultiplatformAndroidConsumerMain.kt

@@ -0,0 +1,7 @@
+@file:Suppress("unused")
+
+object MultiplatformAndroidConsumerMain {
+    init {
+        println(ProducerCommonMain)
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/plainAndroidConsumer/build.gradle.kts

@@ -0,0 +1,18 @@
+plugins {
+    id("com.android.library")
+    kotlin("android")
+}
+
+android {
+    compileSdkVersion(30)
+}
+
+repositories {
+    maven(rootProject.buildDir.resolve("repo"))
+    mavenCentral()
+}
+
+dependencies {
+    implementation(kotlin("stdlib-jdk7"))
+    implementation("com.example:producer:1.0.0-SNAPSHOT")
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/plainAndroidConsumer/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest package="com.example.plainAndroidConsumer"/>

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/plainAndroidConsumer/src/main/java/PlainAndroidConsumer.kt

@@ -0,0 +1,7 @@
+@file:Suppress("unused")
+
+object PlainAndroidConsumer {
+    init {
+        println(ProducerCommonMain)
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/producer/build.gradle.kts

@@ -0,0 +1,27 @@
+val kotlin_version: String by extra
+plugins {
+    `maven-publish`
+    id("com.android.library")
+    kotlin("multiplatform")
+}
+
+group = "com.example"
+version = "1.0.0-SNAPSHOT"
+
+
+publishing {
+    repositories {
+        maven(rootProject.buildDir.resolve("repo")) {
+            name = "buildDir"
+        }
+    }
+}
+
+android {
+    compileSdkVersion(30)
+}
+
+kotlin {
+    jvm()
+    android { publishAllLibraryVariants() }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/producer/src/commonMain/kotlin/ProducerCommonMain.kt

@@ -0,0 +1 @@
+object ProducerCommonMain

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/producer/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest package="com.example.producer"/>

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android-agp-compatibility/settings.gradle.kts

@@ -0,0 +1,28 @@
+pluginManagement {
+    repositories {
+        mavenLocal()
+        gradlePluginPortal()
+        google()
+    }
+
+    val kotlin_version: String? by settings
+    val android_tools_version: String? by settings
+
+    plugins {
+        kotlin("multiplatform").version(kotlin_version)
+        kotlin("android").version(kotlin_version)
+    }
+
+    resolutionStrategy {
+        eachPlugin {
+            if (requested.id.id.startsWith("com.android")) {
+                useModule("com.android.tools.build:gradle:$android_tools_version")
+            }
+        }
+    }
+}
+
+include(":producer")
+include(":plainAndroidConsumer")
+include(":multiplatformAndroidConsumer")
+