[K/JS] Move JS IR box tests setup into separated function

buildSrc/src/main/kotlin/setupIrJsBoxTests.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2023 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 org.gradle.api.tasks.testing.Test
+
+fun Test.useJsIrBoxTests(
+    version: Any,
+    buildDir: String = "",
+    fullStdLib: String = "libraries/stdlib/js-ir/build/classes/kotlin/js/main",
+    reducedStdlibPath: String = "libraries/stdlib/js-ir-minimal-for-test/build/classes/kotlin/js/main",
+    kotlinJsTestPath: String = "libraries/kotlin.test/js-ir/build/classes/kotlin/js/main"
+) {
+    setupV8()
+    dependsOn(":kotlin-stdlib-js-ir:compileKotlinJs")
+    dependsOn(":kotlin-test:kotlin-test-js-ir:compileKotlinJs")
+    dependsOn(":kotlin-stdlib-js-ir-minimal-for-test:compileKotlinJs")
+
+    systemProperty("kotlin.js.test.root.out.dir", buildDir)
+    systemProperty("kotlin.js.full.stdlib.path", fullStdLib)
+    systemProperty("kotlin.js.reduced.stdlib.path", reducedStdlibPath)
+    systemProperty("kotlin.js.kotlin.test.path", kotlinJsTestPath)
+    systemProperty("kotlin.js.stdlib.klib.path", "libraries/stdlib/js-ir/build/libs/kotlin-stdlib-js-ir-js-$version.klib")
+}

buildSrc/src/main/kotlin/setupV8.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2010-2023 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 org.gradle.api.Project
+import org.gradle.api.tasks.testing.Test
+import org.jetbrains.kotlin.gradle.targets.js.d8.D8RootExtension
+import org.jetbrains.kotlin.gradle.targets.js.d8.D8RootPlugin
+
+private object V8Utils {
+    lateinit var d8Plugin: D8RootExtension
+
+    fun useD8Plugin(project: Project) {
+        d8Plugin = D8RootPlugin.apply(project.rootProject)
+        d8Plugin.version = project.v8Version
+    }
+}
+
+fun Project.useD8Plugin() {
+    V8Utils.useD8Plugin(this)
+}
+
+fun Test.setupV8() {
+    dependsOn(V8Utils.d8Plugin.setupTaskProvider)
+    val v8ExecutablePath = project.provider {
+        V8Utils.d8Plugin.requireConfigured().executablePath.absolutePath
+    }
+    doFirst {
+        systemProperty("javascript.engine.path.V8", v8ExecutablePath.get())
+    }
+}
+