[Commonizer] Add CommonizerIT test for ^KT-45350

Adding a test project containing commonization targets for
ios, linux and windows to test behaviour if at least one commonizer group
is fully not supported.

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

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle
+
+import kotlin.test.*
+
+class CommonizerIT : BaseGradleIT() {
+    override val defaultGradleVersion: GradleVersionRequired = GradleVersionRequired.FOR_MPP_SUPPORT
+
+    @Test
+    fun testCommonizeNativeDistributionWithIosLinuxWindows() {
+        with(Project("commonizeNativeDistributionWithIosLinuxWindows")) {
+            build(":p1:runCommonizer") {
+                assertContains("Some Kotlin/Native targets cannot be built")
+                assertSuccessful()
+            }
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/commonizeNativeDistributionWithIosLinuxWindows/build.gradle.kts

@@ -0,0 +1,6 @@
+allprojects {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/commonizeNativeDistributionWithIosLinuxWindows/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/commonizeNativeDistributionWithIosLinuxWindows/p1/build.gradle.kts

@@ -0,0 +1,37 @@
+plugins {
+    kotlin("multiplatform")
+}
+
+kotlin {
+    iosX64()
+    iosArm32()
+    linuxX64()
+    linuxArm64()
+    mingwX64("windowsX64")
+    mingwX86("windowsX86")
+
+    val commonMain by sourceSets.getting
+    val iosMain by sourceSets.creating
+    val linuxMain by sourceSets.creating
+    val windowsMain by sourceSets.creating
+
+    val iosX64Main by sourceSets.getting
+    val iosArm32Main by sourceSets.getting
+    val linuxX64Main by sourceSets.getting
+    val linuxArm64Main by sourceSets.getting
+    val windowsX64Main by sourceSets.getting
+    val windowsX86Main by sourceSets.getting
+
+    iosMain.dependsOn(commonMain)
+    linuxMain.dependsOn(commonMain)
+    windowsMain.dependsOn(commonMain)
+
+    iosX64Main.dependsOn(iosMain)
+    iosArm32Main.dependsOn(iosMain)
+
+    linuxX64Main.dependsOn(linuxMain)
+    linuxArm64Main.dependsOn(linuxMain)
+
+    windowsX64Main.dependsOn(windowsMain)
+    windowsX86Main.dependsOn(windowsMain)
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/commonizeNativeDistributionWithIosLinuxWindows/settings.gradle.kts

@@ -0,0 +1,13 @@
+pluginManagement {
+    repositories {
+        mavenLocal()
+        gradlePluginPortal()
+    }
+    val kotlin_version: String by settings
+    plugins {
+        kotlin("multiplatform").version(kotlin_version)
+    }
+}
+
+include(":p1")
+