[TEST] Move generated visualizer tests to test-gen directories

compiler/tests/org/jetbrains/kotlin/generators/tests/GenerateCompilerTests.kt

@@ -707,7 +707,7 @@ fun main(args: Array<String>) {
             }
         }
 
-        testGroup("compiler/visualizer/tests", "compiler/fir/raw-fir/psi2fir/testData") {
+        testGroup("compiler/visualizer/tests-gen", "compiler/fir/raw-fir/psi2fir/testData") {
             testClass<AbstractPsiVisualizer>("PsiVisualizerForRawFirDataGenerated") {
                 model("rawBuilder", testMethod = "doFirBuilderDataTest")
             }
@@ -717,7 +717,7 @@ fun main(args: Array<String>) {
             }
         }
 
-        testGroup("compiler/visualizer/tests", "compiler/visualizer/testData") {
+        testGroup("compiler/visualizer/tests-gen", "compiler/visualizer/testData") {
             testClass<AbstractPsiVisualizer>("PsiVisualizerForUncommonCasesGenerated") {
                 model("uncommonCases/testFiles", testMethod = "doUncommonCasesTest")
             }

compiler/visualizer/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.ideaExt.idea
+
 plugins {
     kotlin("jvm")
     id("jps-compatible")
@@ -17,13 +19,25 @@ dependencies {
     testCompile(projectTests(":compiler:fir:analysis-tests"))
 }
 
+val generationRoot = projectDir.resolve("tests-gen")
+
 sourceSets {
-    "main" {}
-    "test" { projectDefault() }
+    "main" { projectDefault() }
+    "test" {
+        projectDefault()
+        this.java.srcDir(generationRoot.name)
+    }
+}
+
+if (kotlinBuildProperties.isInJpsBuildIdeaSync) {
+    apply(plugin = "idea")
+    idea {
+        this.module.generatedSourceDirs.add(generationRoot)
+    }
 }
 
 projectTest {
     workingDir = rootDir
 }
 
-testsJar()
+testsJar()