diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/KotlinJsPlatformTestRun.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/KotlinJsPlatformTestRun.kt
index a2fec413564..d6dd9ed4d8e 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/KotlinJsPlatformTestRun.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/KotlinJsPlatformTestRun.kt
@@ -10,8 +10,10 @@ import org.jetbrains.kotlin.gradle.plugin.CompilationExecutionSource
 import org.jetbrains.kotlin.gradle.plugin.CompilationExecutionSourceSupport
 import org.jetbrains.kotlin.gradle.plugin.KotlinTargetTestRun
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJsCompilation
+import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrCompilation
 import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrSubTarget
 import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrTarget
+import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrTest
 import org.jetbrains.kotlin.gradle.targets.js.subtargets.KotlinJsSubTarget
 import org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest
 import org.jetbrains.kotlin.gradle.testing.KotlinReportAggregatingTestRun
@@ -22,6 +24,9 @@ import kotlin.properties.Delegates
 class JsCompilationExecutionSource(override val compilation: KotlinJsCompilation) :
     CompilationExecutionSource<KotlinJsCompilation>
 
+class JsIrCompilationExecutionSource(override val compilation: KotlinJsIrCompilation) :
+    CompilationExecutionSource<KotlinJsIrCompilation>
+
 open class KotlinJsPlatformTestRun(testRunName: String, subtarget: KotlinJsSubTarget) :
     KotlinTaskTestRun<JsCompilationExecutionSource, KotlinJsTest>(testRunName, subtarget.target),
     CompilationExecutionSourceSupport<KotlinJsCompilation> {
@@ -43,22 +48,22 @@ open class KotlinJsPlatformTestRun(testRunName: String, subtarget: KotlinJsSubTa
 }
 
 open class KotlinJsIrPlatformTestRun(testRunName: String, subtarget: KotlinJsIrSubTarget) :
-    KotlinTaskTestRun<JsCompilationExecutionSource, KotlinJsTest>(testRunName, subtarget.target),
-    CompilationExecutionSourceSupport<KotlinJsCompilation> {
+    KotlinTaskTestRun<JsIrCompilationExecutionSource, KotlinJsIrTest>(testRunName, subtarget.target),
+    CompilationExecutionSourceSupport<KotlinJsIrCompilation> {
 
-    private var _executionSource: JsCompilationExecutionSource by Delegates.notNull()
+    private var _executionSource: JsIrCompilationExecutionSource by Delegates.notNull()
 
-    final override var executionSource: JsCompilationExecutionSource
+    final override var executionSource: JsIrCompilationExecutionSource
         get() = _executionSource
         set(value) {
             executionTask.configure { it.compilation = value.compilation }
             _executionSource = value
         }
 
-    override fun setExecutionSourceFrom(compilation: KotlinJsCompilation) {
+    override fun setExecutionSourceFrom(compilation: KotlinJsIrCompilation) {
         requireCompilationOfTarget(compilation, target)
 
-        executionSource = JsCompilationExecutionSource(compilation)
+        executionSource = JsIrCompilationExecutionSource(compilation)
     }
 }
 
@@ -70,9 +75,9 @@ class JsAggregatingExecutionSource(private val aggregatingTestRun: KotlinJsRepor
 }
 
 class JsIrAggregatingExecutionSource(private val aggregatingTestRun: KotlinJsIrReportAggregatingTestRun) :
-    KotlinAggregateExecutionSource<JsCompilationExecutionSource> {
+    KotlinAggregateExecutionSource<JsIrCompilationExecutionSource> {
 
-    override val executionSources: Iterable<JsCompilationExecutionSource>
+    override val executionSources: Iterable<JsIrCompilationExecutionSource>
         get() = aggregatingTestRun.getConfiguredExecutions().map { it.executionSource }
 }
 
@@ -114,11 +119,11 @@ open class KotlinJsReportAggregatingTestRun(
 open class KotlinJsIrReportAggregatingTestRun(
     testRunName: String,
     override val target: KotlinJsIrTarget
-) : KotlinReportAggregatingTestRun<JsCompilationExecutionSource, JsIrAggregatingExecutionSource, KotlinJsIrPlatformTestRun>(testRunName),
+) : KotlinReportAggregatingTestRun<JsIrCompilationExecutionSource, JsIrAggregatingExecutionSource, KotlinJsIrPlatformTestRun>(testRunName),
     KotlinTargetTestRun<JsIrAggregatingExecutionSource>,
-    CompilationExecutionSourceSupport<KotlinJsCompilation> {
+    CompilationExecutionSourceSupport<KotlinJsIrCompilation> {
 
-    override fun setExecutionSourceFrom(compilation: KotlinJsCompilation) = configureAllExecutions {
+    override fun setExecutionSourceFrom(compilation: KotlinJsIrCompilation) = configureAllExecutions {
         setExecutionSourceFrom(compilation)
     }
 
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/dsl/KotlinJsTargetDsl.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/dsl/KotlinJsTargetDsl.kt
index 9db0d81155d..cad6b3500f5 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/dsl/KotlinJsTargetDsl.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/dsl/KotlinJsTargetDsl.kt
@@ -13,6 +13,7 @@ import org.jetbrains.kotlin.gradle.targets.js.KotlinJsIrPlatformTestRun
 import org.jetbrains.kotlin.gradle.targets.js.KotlinJsIrReportAggregatingTestRun
 import org.jetbrains.kotlin.gradle.targets.js.KotlinJsPlatformTestRun
 import org.jetbrains.kotlin.gradle.targets.js.KotlinJsReportAggregatingTestRun
+import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrTest
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsExec
 import org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest
 import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpack
@@ -69,7 +70,7 @@ interface KotlinJsSubTargetDsl {
 }
 
 interface KotlinJsIrSubTargetDsl {
-    fun testTask(body: KotlinJsTest.() -> Unit)
+    fun testTask(body: KotlinJsIrTest.() -> Unit)
     fun testTask(fn: Closure<*>) {
         testTask {
             ConfigureUtil.configure(fn, this)
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinBrowserJsIr.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinBrowserJsIr.kt
index 41edf5411c5..baccbb73218 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinBrowserJsIr.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinBrowserJsIr.kt
@@ -13,7 +13,6 @@ import org.gradle.language.base.plugins.LifecycleBasePlugin
 import org.jetbrains.kotlin.gradle.targets.js.dsl.*
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin
 import org.jetbrains.kotlin.gradle.targets.js.subtargets.BrowserDistribution
-import org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest
 import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpack
 import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpackConfig
 import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpackConfig.Devtool
@@ -41,7 +40,7 @@ open class KotlinBrowserJsIr @Inject constructor(target: KotlinJsIrTarget) :
         }
     }
 
-    override fun configureDefaultTestFramework(it: KotlinJsTest) {
+    override fun configureDefaultTestFramework(it: KotlinJsIrTest) {
         it.useKarma {
             useChromeHeadless()
         }
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrSubTarget.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrSubTarget.kt
index 7891276e0ca..90b31643871 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrSubTarget.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrSubTarget.kt
@@ -17,7 +17,6 @@ import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinJsIrSubTargetDsl
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin
 import org.jetbrains.kotlin.gradle.targets.js.npm.NpmResolverPlugin
 import org.jetbrains.kotlin.gradle.targets.js.npm.npmProject
-import org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest
 import org.jetbrains.kotlin.gradle.tasks.registerTask
 import org.jetbrains.kotlin.gradle.testing.internal.configureConventions
 import org.jetbrains.kotlin.gradle.testing.internal.kotlinTestRegistry
@@ -87,7 +86,7 @@ abstract class KotlinJsIrSubTarget(
             }
     }
 
-    override fun testTask(body: KotlinJsTest.() -> Unit) {
+    override fun testTask(body: KotlinJsIrTest.() -> Unit) {
         testRuns.getByName(KotlinTargetWithTests.DEFAULT_TEST_RUN_NAME).executionTask.configure(body)
     }
 
@@ -119,7 +118,7 @@ abstract class KotlinJsIrSubTarget(
             )
         )
 
-        val testJs = project.registerTask<KotlinJsTest>(testRun.subtargetTestTaskName()) { testJs ->
+        val testJs = project.registerTask<KotlinJsIrTest>(testRun.subtargetTestTaskName()) { testJs ->
             val compileTask = compilation.compileKotlinTask
 
             testJs.group = LifecycleBasePlugin.VERIFICATION_GROUP
@@ -157,7 +156,7 @@ abstract class KotlinJsIrSubTarget(
         }
     }
 
-    protected abstract fun configureDefaultTestFramework(it: KotlinJsTest)
+    protected abstract fun configureDefaultTestFramework(it: KotlinJsIrTest)
 
     private fun configureMain() {
         target.compilations.all { compilation ->
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTestFramework.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTestFramework.kt
index ba78e6d9f10..ca502b0a43d 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTestFramework.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTestFramework.kt
@@ -19,7 +19,7 @@ interface KotlinJsIrTestFramework : RequiresNpmDependencies {
         debug: Boolean
     ): TCServiceMessagesTestExecutionSpec
 
-    /*
+    /* because KotlinJsTestFramework override it too
     override val nodeModulesRequired: Boolean
         get() = true
      */
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinNodeJsIr.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinNodeJsIr.kt
index 6794dbac05d..d880c4fcc6c 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinNodeJsIr.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinNodeJsIr.kt
@@ -7,7 +7,6 @@ package org.jetbrains.kotlin.gradle.targets.js.ir
 
 import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinJsIrNodeDsl
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsExec
-import org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest
 import javax.inject.Inject
 
 open class KotlinNodeJsIr @Inject constructor(target: KotlinJsIrTarget) :
@@ -29,7 +28,7 @@ open class KotlinNodeJsIr @Inject constructor(target: KotlinJsIrTarget) :
         (project.tasks.getByName(runTaskName) as NodeJsExec).body()
     }
 
-    override fun configureDefaultTestFramework(it: KotlinJsTest) {
+    override fun configureDefaultTestFramework(it: KotlinJsIrTest) {
         it.useMocha { }
     }