Support additional flags in MPP tests. Add diagnostic tests for defaults

idea/testData/multiplatform/jvmDefaultNonMpp/base/base.kt

@@ -0,0 +1,9 @@
+package base
+
+interface Check {
+    fun test(): String {
+        return "fail";
+    }
+}
+
+open class CheckClass : Check

idea/testData/multiplatform/jvmDefaultNonMpp/clash/clash.kt

@@ -0,0 +1,9 @@
+import base.*
+
+interface SubCheck : Check {
+    override fun test(): String {
+        return "OK"
+    }
+}
+
+class <!EXPLICIT_OVERRIDE_REQUIRED_IN_MIXED_MODE("public open fun test(): String defined in SubCheckClass", "public open fun test(): String defined in base.CheckClass", "all-compatibility")!>SubCheckClass<!> : CheckClass(), SubCheck

idea/testData/multiplatform/jvmDefaultNonMpp/dependencies.txt

@@ -0,0 +1,4 @@
+MODULE base { platform=[JVM]; root=base;  additionalCompilerArgs=-Xjvm-default=disable }
+MODULE clash { platform=[JVM]; root=clash; additionalCompilerArgs=-Xjvm-default=all-compatibility }
+
+clash -> base { kind=DEPENDS_ON }

idea/tests/org/jetbrains/kotlin/idea/caches/resolve/MultiplatformAnalysisTestGenerated.java

@@ -153,6 +153,11 @@ public class MultiplatformAnalysisTestGenerated extends AbstractMultiplatformAna
         runTest("idea/testData/multiplatform/jsNameClash/");
     }
 
+    @TestMetadata("jvmDefaultNonMpp")
+    public void testJvmDefaultNonMpp() throws Exception {
+        runTest("idea/testData/multiplatform/jvmDefaultNonMpp/");
+    }
+
     @TestMetadata("lambdas")
     public void testLambdas() throws Exception {
         runTest("idea/testData/multiplatform/lambdas/");

idea/tests/org/jetbrains/kotlin/idea/multiplatform/multiPlatformSetup.kt

@@ -115,7 +115,7 @@ fun AbstractMultiModuleTest.doSetup(projectModel: ProjectResolveModel) {
             pureKotlinSourceFolders = pureKotlinSourceFolders
         )
         // New inference is enabled here as these tests are using type refinement feature that is working only along with NI
-        ideaModule.enableMultiPlatform(additionalCompilerArguments = "-Xnew-inference")
+        ideaModule.enableMultiPlatform(additionalCompilerArguments = "-Xnew-inference " + (resolveModule.additionalCompilerArgs ?: ""))
     }
 }
 

idea/tests/org/jetbrains/kotlin/projectModel/Model.kt

@@ -30,7 +30,8 @@ open class ResolveModule(
     val root: File,
     val platform: TargetPlatform,
     val dependencies: List<ResolveDependency>,
-    val testRoot: File? = null
+    val testRoot: File? = null,
+    val additionalCompilerArgs: String? = null
 ) {
     final override fun toString(): String {
         return buildString { renderDescription(Printer(this)) }
@@ -43,6 +44,7 @@ open class ResolveModule(
         printer.println("root=${root.absolutePath}")
         if (testRoot != null) printer.println("testRoot=${testRoot.absolutePath}")
         printer.println("dependencies=${dependencies.joinToString { it.to.name }}")
+        if (additionalCompilerArgs != null)  printer.println("additionalCompilerArgs=$additionalCompilerArgs")
     }
 
     override fun equals(other: Any?): Boolean {
@@ -69,6 +71,7 @@ open class ResolveModule(
         var platform: TargetPlatform? = null
         val dependencies: MutableList<ResolveDependency.Builder> = mutableListOf()
         var testRoot: File? = null
+        var additionalCompilerArgs: String? = null
 
         open fun build(): ResolveModule {
             if (state == State.BUILT) return cachedResult!!
@@ -77,7 +80,7 @@ open class ResolveModule(
             state = State.BUILDING
 
             val builtDependencies = dependencies.map { it.build() }
-            cachedResult = ResolveModule(name!!, root!!, platform!!, builtDependencies, testRoot)
+            cachedResult = ResolveModule(name!!, root!!, platform!!, builtDependencies, testRoot, additionalCompilerArgs= additionalCompilerArgs)
             state = State.BUILT
 
             return cachedResult!!

idea/tests/org/jetbrains/kotlin/projectModel/Parser.kt

@@ -70,6 +70,8 @@ open class ProjectStructureParser(private val projectRoot: File) {
         val root = attributes["root"] ?: builder.name!!
         builder.root = File(projectRoot, root)
 
+        builder.additionalCompilerArgs = attributes["additionalCompilerArgs"]
+
         val testRoot = attributes["testRoot"]
         if (testRoot != null) builder.testRoot = File(projectRoot, testRoot)
     }
@@ -116,7 +118,7 @@ open class ProjectStructureParser(private val projectRoot: File) {
 
         return attributesString
             .split(ATTRIBUTES_SEPARATOR)
-            .map { it.splitIntoExactlyTwoParts(ATTRIBUTE_VALUE_SEPARATOR) }
+            .map { it.splitIntoTwoParts(ATTRIBUTE_VALUE_SEPARATOR) }
             .toMap()
     }
 
@@ -202,8 +204,10 @@ private fun Reader.nextWord(): String? {
 
 private fun Char.isSeparator() = isWhitespace() || this == '\n'
 
-private fun String.splitIntoExactlyTwoParts(separator: String): Pair<String, String> {
+private fun String.splitIntoTwoParts(separator: String): Pair<String, String> {
     val result = split(separator)
-    require(result.size == 2) { "$this can not be split into exactly two parts with separator $separator" }
+    val name = substringBefore(separator, "")
-    return result[0].trim() to result[1].trim()
+    val value = substringAfter(separator, "")
+    require(name.isNotEmpty()) { "$this can not be split into two parts with separator $separator" }
+    return name.trim() to value.trim()
 }