[Parcelize] Add test for parcelize in multiplatform setting.

This tests that classes in common code can have code generated
for them in android compilations.

compiler/testData/codegen/box/multiplatform/k2/basic/independentCommonSourceModules.kt

@@ -8,6 +8,10 @@ fun o() = "O"
 
 // MODULE: common2
 // TARGET_PLATFORM: Common
+// The test framework adds additional files to common modules with no dependencies.
+// Those files should only be added once, so we exclude them from common2 and only include
+// them in common1.
+// NO_COMMON_FILES
 // FILE: common2.kt
 
 fun k() = "K"

compiler/testData/codegen/box/multiplatform/k2/defaultArguments/suspend.kt

@@ -1,6 +1,5 @@
 // LANGUAGE: +MultiPlatformProjects
 // WITH_STDLIB
-// WITH_COROUTINES
 
 // MODULE: common
 // FILE: common.kt
@@ -10,6 +9,7 @@ expect interface I {
 }
 
 // MODULE: main()()(common)
+// WITH_COROUTINES
 // FILE: main.kt
 import kotlin.coroutines.*
 import helpers.*

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/directives/WasmEnvironmentConfigurationDirectives.kt

@@ -47,4 +47,11 @@ object WasmEnvironmentConfigurationDirectives : SimpleDirectivesContainer() {
     val CHECK_TYPESCRIPT_DECLARATIONS by directive(
         description = "Check typescript declarations generated by the compiler",
     )
+
+    val NO_COMMON_FILES by directive(
+        """
+            Don't added helper files to prevent linking issues.
+        """.trimIndent(),
+        applicability = DirectiveApplicability.Global,
+    )
 }

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/services/impl/ModuleStructureExtractorImpl.kt

@@ -355,18 +355,13 @@ class ModuleStructureExtractorImpl(
                 directives = moduleDirectives,
                 languageVersionSettings = currentModuleLanguageVersionSettingsBuilder.build()
             )
-            if (testModule.frontendKind != FrontendKinds.FIR ||
-                !testModule.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects) ||
-                modules.isEmpty()
-            ) {
-                additionalSourceProviders.flatMapTo(filesOfCurrentModule) { additionalSourceProvider ->
-                    additionalSourceProvider.produceAdditionalFiles(
-                        globalDirectives ?: RegisteredDirectives.Empty,
-                        testModule
-                    ).also { additionalFiles ->
-                        require(additionalFiles.all { it.isAdditional }) {
-                            "Files produced by ${additionalSourceProvider::class.qualifiedName} should have flag `isAdditional = true`"
-                        }
+            additionalSourceProviders.flatMapTo(filesOfCurrentModule) { additionalSourceProvider ->
+                additionalSourceProvider.produceAdditionalFiles(
+                    globalDirectives ?: RegisteredDirectives.Empty,
+                    testModule
+                ).also { additionalFiles ->
+                    require(additionalFiles.all { it.isAdditional }) {
+                        "Files produced by ${additionalSourceProvider::class.qualifiedName} should have flag `isAdditional = true`"
                     }
                 }
             }