Use both macOS and linux targets in ui-showcase (#3663)

Author: whyoleg

dokka-integration-tests/gradle/projects/ui-showcase/kmp/build.gradle.kts

@@ -12,6 +12,11 @@ kotlin {
     jvm()
     linuxX64()
     macosX64()
+
+    // adding linuxArm64 and macosArm64 is a workaround for https://github.com/Kotlin/dokka/issues/3386
+    linuxArm64()
+    macosArm64()
+
     js {
         nodejs()
     }

dokka-integration-tests/gradle/projects/ui-showcase/kmp/src/macosMain/kotlin/org/jetbrains/dokka/uitest/kmp/CInterop.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+@file:Suppress("unused")
+
+package org.jetbrains.dokka.uitest.kmp
+
+import kotlinx.cinterop.CPointed
+import kotlinx.cinterop.CPointer
+import kotlinx.cinterop.ExperimentalForeignApi
+
+/**
+ * Low-level MacOS function
+ */
+@OptIn(ExperimentalForeignApi::class)
+fun <T : CPointed> printPointerRawValue(pointer: CPointer<T>) {
+    println(pointer.rawValue)
+}

dokka-integration-tests/gradle/src/testUiShowcaseProject/kotlin/UiShowcaseIntegrationTest.kt

@@ -16,7 +16,6 @@ import kotlin.test.assertTrue
 class UiShowcaseIntegrationTest : AbstractGradleIntegrationTest(), TestOutputCopier {
     override val projectOutputLocation: File by lazy { File(projectDir, "build/dokka/htmlMultiModule") }
 
-    @OnlyDescriptors("CPointer is not resolved in K2")
     @ParameterizedTest(name = "{0}")
     @ArgumentsSource(LatestTestedVersionsArgumentsProvider::class)
     fun execute(buildVersions: BuildVersions) {