diff --git a/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/service/project/manage/ExternalProjectsDataStorageTest.kt b/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/service/project/manage/ExternalProjectsDataStorageTest.kt
index ba4c5091a6d3..8ae4f0ce8f78 100644
--- a/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/service/project/manage/ExternalProjectsDataStorageTest.kt
+++ b/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/service/project/manage/ExternalProjectsDataStorageTest.kt
@@ -13,6 +13,8 @@ import com.intellij.testFramework.fixtures.IdeaTestFixtureFactory
 import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.BDDAssertions.then
 import org.junit.Test
+import kotlin.io.path.createTempDirectory
+import kotlin.io.path.invariantSeparatorsPathString
 import kotlin.reflect.jvm.jvmName
 
 class ExternalProjectsDataStorageTest: UsefulTestCase() {
@@ -43,7 +45,10 @@ class ExternalProjectsDataStorageTest: UsefulTestCase() {
     val testSystemId = ProjectSystemId("Test")
     val externalName = "external_name"
     val externalProjectInfo = createExternalProjectInfo(
-      testSystemId, externalName, FileUtil.toSystemIndependentName(createTempDir(suffix = externalName).canonicalPath))
+      testSystemId,
+      externalName,
+      createTempDirectory(externalName).invariantSeparatorsPathString
+    )
 
     dataStorage.update(externalProjectInfo)
     dataStorage.save()
@@ -60,13 +65,23 @@ class ExternalProjectsDataStorageTest: UsefulTestCase() {
 
     val testSystemId = ProjectSystemId("Test")
     val externalName1 = "external_name1"
-    dataStorage.update(createExternalProjectInfo(
-      testSystemId, externalName1, FileUtil.toSystemIndependentName(createTempDir(suffix = externalName1).canonicalPath)))
+    dataStorage.update(
+      createExternalProjectInfo(
+        testSystemId,
+        externalName1,
+        createTempDirectory(externalName1).invariantSeparatorsPathString
+      )
+    )
     dataStorage.load()
 
     val externalName2 = "external_name2"
-    dataStorage.update(createExternalProjectInfo(
-      testSystemId, externalName2, FileUtil.toSystemIndependentName(createTempDir(suffix = externalName2).canonicalPath)))
+    dataStorage.update(
+      createExternalProjectInfo(
+        testSystemId,
+        externalName2,
+        createTempDirectory(externalName2).invariantSeparatorsPathString
+      )
+    )
 
     val list = dataStorage.list(testSystemId)
     then(list).hasSize(2)
diff --git a/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/JdkDownloaderStoreTest.kt b/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/JdkDownloaderStoreTest.kt
index 50a3aebca344..94055caa52f1 100644
--- a/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/JdkDownloaderStoreTest.kt
+++ b/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/JdkDownloaderStoreTest.kt
@@ -5,12 +5,13 @@ import com.intellij.openapi.components.reloadApplicationState
 import com.intellij.openapi.components.service
 import com.intellij.testFramework.LightPlatformTestCase
 import org.junit.Assert
+import kotlin.io.path.createTempDirectory
 
 class JdkDownloaderStoreTest : LightPlatformTestCase() {
   fun testState() {
     val item1 = jdkItemForTest("urk-1", JdkPackageType.ZIP, 123, "sha-1")
     val item2 = jdkItemForTest("urk-2", JdkPackageType.ZIP, 432, "sha-2")
-    val path1 = createTempDir("path-1").toPath()
+    val path1 = createTempDirectory("path-1")
     service.registerInstall(item1, path1)
 
     Assert.assertEquals(listOf(path1), service.findInstallations(item1).toList())
diff --git a/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/SdkDownloaderTest.kt b/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/SdkDownloaderTest.kt
index b100ea4785c1..629165f7fe49 100644
--- a/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/SdkDownloaderTest.kt
+++ b/platform/lang-impl/testSources/com/intellij/openapi/projectRoots/impl/jdkDownloader/SdkDownloaderTest.kt
@@ -23,11 +23,12 @@ import java.util.concurrent.TimeUnit
 import java.util.concurrent.atomic.AtomicInteger
 import java.util.concurrent.atomic.AtomicReference
 import kotlin.concurrent.thread
+import kotlin.io.path.createTempDirectory
 import kotlin.io.path.invariantSeparatorsPathString
 
 class SdkDownloaderTest : LightPlatformTestCase() {
   private val successDownloadTask = object : SdkDownloadTask {
-    val home = createTempDir("planned-home").toPath().invariantSeparatorsPathString
+    val home = createTempDirectory("planned-home").invariantSeparatorsPathString
     override fun getPlannedHomeDir() = home
     override fun getSuggestedSdkName() = "suggested name"
     override fun getPlannedVersion() = "planned version"
diff --git a/platform/lang-impl/testSources/com/intellij/openapi/roots/ui/configuration/projectRoot/ProjectSdksModelTest.kt b/platform/lang-impl/testSources/com/intellij/openapi/roots/ui/configuration/projectRoot/ProjectSdksModelTest.kt
index 203e48818855..31e51da4cef7 100644
--- a/platform/lang-impl/testSources/com/intellij/openapi/roots/ui/configuration/projectRoot/ProjectSdksModelTest.kt
+++ b/platform/lang-impl/testSources/com/intellij/openapi/roots/ui/configuration/projectRoot/ProjectSdksModelTest.kt
@@ -17,6 +17,9 @@ import com.intellij.util.Consumer
 import com.intellij.util.ui.UIUtil
 import org.junit.Assert
 import org.junit.Test
+import kotlin.io.path.absolute
+import kotlin.io.path.createTempDirectory
+import kotlin.io.path.pathString
 
 class ProjectSdksModelTest : LightPlatformTestCase() {
   private val model = ProjectSdksModel()
@@ -71,7 +74,7 @@ class ProjectSdksModelTest : LightPlatformTestCase() {
 
   private inner class DownloadSdkTest {
     val type = SimpleJavaSdkType.getInstance()
-    val plannedDir = createTempDir("planned-dir-")
+    val plannedDir = createTempDirectory("planned-dir-").absolute()
     val sdkName = "test-name"
 
     fun task(action: () -> Unit) {
@@ -94,7 +97,7 @@ class ProjectSdksModelTest : LightPlatformTestCase() {
       try {
         model.setupInstallableSdk(type, object : SdkDownloadTask {
           override fun getSuggestedSdkName() = sdkName
-          override fun getPlannedHomeDir() = plannedDir.absolutePath
+          override fun getPlannedHomeDir() = plannedDir.pathString
           override fun getPlannedVersion() = "1.2.3"
           override fun doDownload(indicator: ProgressIndicator) {
             ApplicationManager.getApplication().assertIsNonDispatchThread()
diff --git a/python/testSrc/com/jetbrains/env/python/testing/PythonTrialTest.kt b/python/testSrc/com/jetbrains/env/python/testing/PythonTrialTest.kt
index 533a2c1024d4..377b33bb6d4f 100644
--- a/python/testSrc/com/jetbrains/env/python/testing/PythonTrialTest.kt
+++ b/python/testSrc/com/jetbrains/env/python/testing/PythonTrialTest.kt
@@ -22,8 +22,9 @@ import com.jetbrains.python.testing.PyTrialTestFactory
 import com.jetbrains.python.testing.PythonTestConfigurationType
 import org.junit.Assert
 import org.junit.Test
-import java.io.File
 import java.util.function.Function
+import kotlin.io.path.createTempDirectory
+import kotlin.io.path.pathString
 
 // Twisted trial test case
 @EnvTestTagsRequired(tags = ["twisted"])
@@ -56,6 +57,6 @@ class PyTrialTestProcessRunner(scriptName: String,
   PyTrialTestFactory(PythonTestConfigurationType.getInstance()), PyTrialTestConfiguration::class.java, scriptName, timesToRerunFailedTests) {
   override fun configurationCreatedAndWillLaunch(configuration: PyTrialTestConfiguration) {
     super.configurationCreatedAndWillLaunch(configuration)
-    configuration.additionalArguments = "--temp-directory=" + File(createTempDir(), "trial").path
+    configuration.additionalArguments = "--temp-directory=" + createTempDirectory().resolve("trial").pathString
   }
 }