[Gradle, JS] KT-36784 Move test only to IR

#KT-32466 fixed
#KT-36784 fixed
#KT-36864 fixed

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kotlin2JsGradlePluginIT.kt

@@ -74,6 +74,45 @@ class Kotlin2JsIrGradlePluginIT : AbstractKotlin2JsGradlePluginIT(true) {
             }
         }
     }
+
+    @Test
+    fun testJsCompositeBuild() {
+        val rootProjectName = "js-composite-build"
+        val appProject = transformProjectWithPluginsDsl(
+            projectName = "app",
+            directoryPrefix = rootProjectName,
+            wrapperVersion = GradleVersionRequired.AtLeast("5.3")
+        )
+
+        val libProject = transformProjectWithPluginsDsl(
+            projectName = "lib",
+            directoryPrefix = rootProjectName,
+            wrapperVersion = GradleVersionRequired.AtLeast("5.3")
+        )
+
+        libProject.gradleProperties().appendText(jsCompilerType(KotlinJsCompilerType.IR))
+        appProject.gradleProperties().appendText(jsCompilerType(KotlinJsCompilerType.IR))
+
+        libProject.projectDir.copyRecursively(appProject.projectDir.resolve(libProject.projectDir.name))
+
+        fun Project.asyncVersion(rootModulePath: String, moduleName: String): String =
+            NpmProjectModules(projectDir.resolve(rootModulePath))
+                .require(moduleName)
+                .let { File(it).parentFile.parentFile.resolve(NpmProject.PACKAGE_JSON) }
+                .let { fromSrcPackageJson(it) }
+                .let { it!!.version }
+
+        with(appProject) {
+            build("build") {
+                assertSuccessful()
+                val appAsyncVersion = asyncVersion("build/js/node_modules/app", "async")
+                assertEquals("3.2.0", appAsyncVersion)
+
+                val libAsyncVersion = asyncVersion("build/js/node_modules/lib2", "async")
+                assertEquals("2.6.2", libAsyncVersion)
+            }
+        }
+    }
 }
 
 class Kotlin2JsGradlePluginIT : AbstractKotlin2JsGradlePluginIT(false) {
@@ -551,47 +590,6 @@ abstract class AbstractKotlin2JsGradlePluginIT(private val irBackend: Boolean) :
         }
     }
 
-    @Test
-    fun testJsCompositeBuild() {
-        val rootProjectName = "js-composite-build"
-        val appProject = transformProjectWithPluginsDsl(
-            projectName = "app",
-            directoryPrefix = rootProjectName,
-            wrapperVersion = GradleVersionRequired.AtLeast("5.3")
-        )
-
-        val libProject = transformProjectWithPluginsDsl(
-            projectName = "lib",
-            directoryPrefix = rootProjectName,
-            wrapperVersion = GradleVersionRequired.AtLeast("5.3")
-        )
-
-        if (irBackend) {
-            libProject.gradleProperties().appendText(jsCompilerType(KotlinJsCompilerType.IR))
-            appProject.gradleProperties().appendText(jsCompilerType(KotlinJsCompilerType.IR))
-        }
-
-        libProject.projectDir.copyRecursively(appProject.projectDir.resolve(libProject.projectDir.name))
-
-        fun Project.asyncVersion(rootModulePath: String, moduleName: String): String =
-            NpmProjectModules(projectDir.resolve(rootModulePath))
-                .require(moduleName)
-                .let { File(it).parentFile.parentFile.resolve(NpmProject.PACKAGE_JSON) }
-                .let { fromSrcPackageJson(it) }
-                .let { it!!.version }
-
-        with(appProject) {
-            build("build", "browserDevelopmentWebpack") {
-                assertSuccessful()
-                val appAsyncVersion = asyncVersion("build/js/node_modules/app", "async")
-                assertEquals("3.2.0", appAsyncVersion)
-
-                val libAsyncVersion = asyncVersion("build/js/node_modules/lib2", "async")
-                assertEquals("2.6.2", libAsyncVersion)
-            }
-        }
-    }
-
     @Test
     fun testBrowserDistribution() = with(Project("kotlin-js-browser-project", GradleVersionRequired.AtLeast("5.0"))) {
         setupWorkingDir()

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/js-composite-build/app/build.gradle.kts

@@ -10,11 +10,7 @@ repositories {
 
 kotlin.js {
     binaries.executable()
-    browser()
-}
-
-tasks.named("browserTest").configure {
-    enabled = false
+    nodejs()
 }
 
 rootProject.tasks
@@ -35,4 +31,5 @@ dependencies {
     implementation(kotlin("stdlib-js"))
     implementation("com.example:lib2")
     implementation(npm("async", "3.2.0"))
+    testImplementation(kotlin("test-js"))
 }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/js-composite-build/app/src/test/kotlin/SimpleTest.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+class SimpleTest {
+    @Test
+    fun simpleTest() {
+        assertTrue {
+            Singleton.test() is Long
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/js-composite-build/lib/build.gradle.kts

@@ -10,11 +10,7 @@ repositories {
     mavenLocal()
 }
 
-kotlin.target.browser()
-
-tasks.named("browserTest").configure {
-    enabled = false
-}
+kotlin.target.nodejs()
 
 rootProject.tasks
     .withType(org.jetbrains.kotlin.gradle.targets.js.npm.tasks.KotlinNpmInstallTask::class.java)

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/js-composite-build/lib/src/main/kotlin/Singleton.kt

@@ -1,5 +1,5 @@
 object Singleton {
-    fun test(): String {
-        return "42"
+    fun test(): Long {
+        return 42L
     }
 }