Move generated parcelize tests to tests-gen directory

generators/tests/org/jetbrains/kotlin/generators/tests/GenerateTests.kt

@@ -147,7 +147,7 @@ fun main(args: Array<String>) {
             }
         }
 
-        testGroup("plugins/parcelize/parcelize-compiler/tests", "plugins/parcelize/parcelize-compiler/testData") {
+        testGroup("plugins/parcelize/parcelize-compiler/tests-gen", "plugins/parcelize/parcelize-compiler/testData") {
             testClass<AbstractParcelizeBoxTest> {
                 model("box", targetBackend = TargetBackend.JVM)
             }

plugins/parcelize/parcelize-compiler/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.ideaExt.idea
+
 description = "Parcelize compiler plugin"
 
 plugins {
@@ -44,9 +46,21 @@ dependencies {
     parcelizeRuntimeForTests(project(":kotlin-android-extensions-runtime")) { isTransitive = false }
 }
 
+val generationRoot = projectDir.resolve("tests-gen")
+
 sourceSets {
     "main" { projectDefault() }
-    "test" { projectDefault() }
+    "test" {
+        projectDefault()
+        this.java.srcDir(generationRoot.name)
+    }
+}
+
+if (kotlinBuildProperties.isInJpsBuildIdeaSync) {
+    apply(plugin = "idea")
+    idea {
+        this.module.generatedSourceDirs.add(generationRoot)
+    }
 }
 
 runtimeJar()