diff --git a/.idea/modules.xml b/.idea/modules.xml
index 7213806c38d9..5543eb66b35c 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -1012,6 +1012,7 @@
       <module fileurl="file://$PROJECT_DIR$/platform/ml-impl/intellij.platform.ml.impl.iml" filepath="$PROJECT_DIR$/platform/ml-impl/intellij.platform.ml.impl.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/navbar/shared/intellij.platform.navbar.iml" filepath="$PROJECT_DIR$/platform/navbar/shared/intellij.platform.navbar.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/navbar/backend/intellij.platform.navbar.backend.iml" filepath="$PROJECT_DIR$/platform/navbar/backend/intellij.platform.navbar.backend.iml" />
+      <module fileurl="file://$PROJECT_DIR$/platform/navbar.compatibility/testFramework/intellij.platform.navbar.compatibility.testFramework.iml" filepath="$PROJECT_DIR$/platform/navbar.compatibility/testFramework/intellij.platform.navbar.compatibility.testFramework.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/navbar/ide/intellij.platform.navbar.ide.iml" filepath="$PROJECT_DIR$/platform/navbar/ide/intellij.platform.navbar.ide.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/navbar/vm/intellij.platform.navbar.vm.iml" filepath="$PROJECT_DIR$/platform/navbar/vm/intellij.platform.navbar.vm.iml" />
       <module fileurl="file://$PROJECT_DIR$/platform/object-serializer/intellij.platform.objectSerializer.iml" filepath="$PROJECT_DIR$/platform/object-serializer/intellij.platform.objectSerializer.iml" />
diff --git a/java/java-tests/intellij.java.tests.iml b/java/java-tests/intellij.java.tests.iml
index 77fa6d9bd46b..3f1b8c3dc3f1 100644
--- a/java/java-tests/intellij.java.tests.iml
+++ b/java/java-tests/intellij.java.tests.iml
@@ -87,5 +87,6 @@
     <orderEntry type="module" module-name="intellij.tools.ide.metrics.benchmark" scope="TEST" />
     <orderEntry type="module" module-name="intellij.junit.java.tests" scope="TEST" />
     <orderEntry type="module" module-name="intellij.platform.util.coroutines" scope="TEST" />
+    <orderEntry type="module" module-name="intellij.platform.navbar.compatibility.testFramework" scope="TEST" />
   </component>
 </module>
\ No newline at end of file
diff --git a/java/java-tests/testSrc/com/intellij/ide/navigationToolbar/JavaNavBarTest.java b/java/java-tests/testSrc/com/intellij/ide/navigationToolbar/JavaNavBarTest.java
index 931d5b25cb63..4acaabc74929 100644
--- a/java/java-tests/testSrc/com/intellij/ide/navigationToolbar/JavaNavBarTest.java
+++ b/java/java-tests/testSrc/com/intellij/ide/navigationToolbar/JavaNavBarTest.java
@@ -8,7 +8,7 @@ import com.intellij.testFramework.fixtures.LightJavaCodeInsightFixtureTestCase;
 
 import java.util.List;
 
-import static com.intellij.ide.navbar.tests.TestFrameworkKt.contextNavBarPathStrings;
+import static com.intellij.platform.navbar.compatibility.testFramework.TestFrameworkKt.contextNavBarPathStrings;
 
 public class JavaNavBarTest extends LightJavaCodeInsightFixtureTestCase {
   @Override
diff --git a/platform/lang-impl/src/com/intellij/ide/navbar/actions/actions.kt b/platform/lang-impl/src/com/intellij/ide/navbar/actions/actions.kt
index ee23905d2e66..512f9cc68200 100644
--- a/platform/lang-impl/src/com/intellij/ide/navbar/actions/actions.kt
+++ b/platform/lang-impl/src/com/intellij/ide/navbar/actions/actions.kt
@@ -23,6 +23,7 @@ import com.intellij.psi.PsiDirectory
 import com.intellij.psi.PsiElement
 import com.intellij.psi.util.PsiUtilCore
 import com.intellij.util.containers.toArray
+import org.jetbrains.annotations.VisibleForTesting
 
 /**
  * Fast extension data without selection (allows to override cut/copy/paste providers)
@@ -59,7 +60,8 @@ internal class BgtDataRule : GetDataRule {
   }
 }
 
-internal fun getBgData(project: Project, selection: List<Pointer<out NavBarItem>>, dataId: String): Any? {
+@VisibleForTesting
+fun getBgData(project: Project, selection: List<Pointer<out NavBarItem>>, dataId: String): Any? {
   val selectedItems = lazy(LazyThreadSafetyMode.NONE) {
     ApplicationManager.getApplication().assertReadAccessAllowed()
     selection.mapNotNull {
diff --git a/platform/lang-impl/src/com/intellij/ide/navbar/impl/DefaultNavBarItemProvider.kt b/platform/lang-impl/src/com/intellij/ide/navbar/impl/DefaultNavBarItemProvider.kt
index 61d09e55085f..2bac3bab6412 100644
--- a/platform/lang-impl/src/com/intellij/ide/navbar/impl/DefaultNavBarItemProvider.kt
+++ b/platform/lang-impl/src/com/intellij/ide/navbar/impl/DefaultNavBarItemProvider.kt
@@ -19,6 +19,7 @@ import com.intellij.psi.util.PsiUtilCore.ensureValid
 import com.intellij.psi.util.PsiUtilCore.getVirtualFile
 import com.intellij.util.concurrency.annotations.RequiresBackgroundThread
 import com.intellij.util.concurrency.annotations.RequiresReadLock
+import org.jetbrains.annotations.VisibleForTesting
 
 /**
  * Delegates old implementations
@@ -177,7 +178,8 @@ internal fun ensurePsiFromExtensionIsValid(psi: PsiElement, message: String, cla
   }
 }
 
-internal fun compatibilityNavBarItem(o: Any, ext: NavBarModelExtension?): NavBarItem? {
+@VisibleForTesting
+fun compatibilityNavBarItem(o: Any, ext: NavBarModelExtension?): NavBarItem? {
   return when (o) {
     is Project -> {
       ProjectNavBarItem(o)
diff --git a/platform/navbar.compatibility/testFramework/intellij.platform.navbar.compatibility.testFramework.iml b/platform/navbar.compatibility/testFramework/intellij.platform.navbar.compatibility.testFramework.iml
new file mode 100644
index 000000000000..f421e5642090
--- /dev/null
+++ b/platform/navbar.compatibility/testFramework/intellij.platform.navbar.compatibility.testFramework.iml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" packagePrefix="com.intellij.platform.navbar.compatibility.testFramework" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="kotlin-stdlib" level="project" />
+    <orderEntry type="module" module-name="intellij.platform.core.ui" />
+    <orderEntry type="module" module-name="intellij.platform.lang.impl" />
+    <orderEntry type="module" module-name="intellij.platform.navbar.backend" exported="" />
+    <orderEntry type="module" module-name="intellij.platform.navbar.ide" exported="" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/platform/lang-impl/src/com/intellij/ide/navbar/tests/testFramework.kt b/platform/navbar.compatibility/testFramework/src/testFramework.kt
similarity index 96%
rename from platform/lang-impl/src/com/intellij/ide/navbar/tests/testFramework.kt
rename to platform/navbar.compatibility/testFramework/src/testFramework.kt
index 5fb6051323a2..d673eee043b4 100644
--- a/platform/lang-impl/src/com/intellij/ide/navbar/tests/testFramework.kt
+++ b/platform/navbar.compatibility/testFramework/src/testFramework.kt
@@ -1,5 +1,5 @@
 // Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
-package com.intellij.ide.navbar.tests
+package com.intellij.platform.navbar.compatibility.testFramework
 
 import com.intellij.ide.navbar.actions.getBgData
 import com.intellij.ide.navbar.impl.DefaultNavBarItem
@@ -9,7 +9,6 @@ import com.intellij.openapi.actionSystem.DataKey
 import com.intellij.openapi.project.Project
 import com.intellij.platform.navbar.NavBarItemPresentation
 import com.intellij.platform.navbar.backend.NavBarItem
-import com.intellij.platform.navbar.backend.NavBarItemProvider
 import com.intellij.platform.navbar.backend.impl.children
 import com.intellij.platform.navbar.backend.impl.pathToItem
 import com.intellij.platform.navbar.ide.contextModel
diff --git a/plugins/kotlin/idea/tests/kotlin.idea.tests.iml b/plugins/kotlin/idea/tests/kotlin.idea.tests.iml
index 44ab502eb1d5..0c4e6555adb1 100644
--- a/plugins/kotlin/idea/tests/kotlin.idea.tests.iml
+++ b/plugins/kotlin/idea/tests/kotlin.idea.tests.iml
@@ -138,5 +138,6 @@
     <orderEntry type="module" module-name="intellij.platform.projectModel" scope="TEST" />
     <orderEntry type="module" module-name="kotlin.ide" scope="TEST" />
     <orderEntry type="module" module-name="kotlin.bundled-compiler-plugins-support" scope="TEST" />
+    <orderEntry type="module" module-name="intellij.platform.navbar.compatibility.testFramework" scope="TEST" />
   </component>
 </module>
\ No newline at end of file
diff --git a/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/navigationToolbar/AbstractKotlinNavBarTest.kt b/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/navigationToolbar/AbstractKotlinNavBarTest.kt
index 19a28b4f49d7..fd9d9dd91c44 100644
--- a/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/navigationToolbar/AbstractKotlinNavBarTest.kt
+++ b/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/navigationToolbar/AbstractKotlinNavBarTest.kt
@@ -2,8 +2,8 @@
 
 package org.jetbrains.kotlin.idea.navigationToolbar
 
-import com.intellij.ide.navbar.tests.contextNavBarPathStrings
 import com.intellij.openapi.editor.ex.EditorEx
+import com.intellij.platform.navbar.compatibility.testFramework.contextNavBarPathStrings
 import org.jetbrains.kotlin.idea.base.test.InTextDirectivesUtils
 import org.jetbrains.kotlin.idea.test.KotlinLightCodeInsightFixtureTestCase