Fix "Virtual pointer hasn't been disposed" exception in tests. Add sdk to ProjectJdkTable.

idea/idea-test-framework/src/org/jetbrains/kotlin/idea/test/ConfigLibraryUtil.kt

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.idea.test
 
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.module.Module
+import com.intellij.openapi.projectRoots.ProjectJdkTable
 import com.intellij.openapi.projectRoots.Sdk
 import com.intellij.openapi.roots.LibraryOrderEntry
 import com.intellij.openapi.roots.ModifiableRootModel
@@ -34,6 +35,7 @@ import org.jetbrains.kotlin.test.InTextDirectivesUtils
 import org.jetbrains.kotlin.utils.PathUtil
 import java.io.File
 import java.util.*
+import kotlin.test.assertNotNull
 
 /**
  * Helper for configuring kotlin runtime in tested project.
@@ -88,6 +90,13 @@ object ConfigLibraryUtil {
             val rootManager = ModuleRootManager.getInstance(module)
             val rootModel = rootManager.modifiableModel
 
+            assertNotNull(
+                ProjectJdkTable.getInstance().findJdk(sdk.name),
+                "Cannot find sdk in ProjectJdkTable. This may cause sdk leak.\n" +
+                        "You can use ProjectPluginTestBase.addJdk(Disposable ...) to register sdk in ProjectJdkTable.\n" +
+                        "Then sdk will be removed in tearDown"
+            )
+
             rootModel.sdk = sdk
             rootModel.commit()
         }

idea/idea-test-framework/src/org/jetbrains/kotlin/idea/test/PluginTestCaseBase.java

@@ -25,6 +25,7 @@ import com.intellij.openapi.projectRoots.impl.JavaSdkImpl;
 import com.intellij.openapi.util.Disposer;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.newvfs.impl.VfsRootAccess;
+import kotlin.jvm.functions.Function0;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.TestOnly;
 import org.jetbrains.kotlin.test.KotlinTestUtils;
@@ -52,6 +53,11 @@ public class PluginTestCaseBase {
 
     @NotNull
     private static Sdk getSdk(String sdkHome, String name) {
+        ProjectJdkTable table = ProjectJdkTable.getInstance();
+        Sdk existing = table.findJdk(name);
+        if (existing != null) {
+            return existing;
+        }
         return JavaSdk.getInstance().createJdk(name, sdkHome, true);
     }
 
@@ -84,6 +90,13 @@ public class PluginTestCaseBase {
         return getSdk(javaHome, "Full JDK");
     }
 
+    @NotNull
+    public static Sdk addJdk(@NotNull Disposable disposable, @NotNull Function0<Sdk> getJdk) {
+        Sdk jdk = getJdk.invoke();
+        ApplicationManager.getApplication().runWriteAction(() -> ProjectJdkTable.getInstance().addJdk(jdk, disposable));
+        return jdk;
+    }
+
     @NotNull
     public static Sdk jdk(@NotNull TestJdkKind kind) {
         switch (kind) {