[Gradle, JS] Migrate simple K/JS IC test to the new plugin (#KT-52946)

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

@@ -268,7 +268,7 @@ class Kotlin2JsGradlePluginIT : AbstractKotlin2JsGradlePluginIT(false) {
                 projectPath.resolve("$it/src/main").allKotlinFiles
             }
 
-            build("build") {
+            build("compileKotlinJs", "compileTestKotlinJs") {
                 checkIrCompilationMessage()
                 assertOutputContains(USING_JS_INCREMENTAL_COMPILATION_MESSAGE)
                 if (irBackend) {
@@ -278,7 +278,7 @@ class Kotlin2JsGradlePluginIT : AbstractKotlin2JsGradlePluginIT(false) {
                 }
             }
 
-            build("build") {
+            build("compileKotlinJs", "compileTestKotlinJs") {
                 assertCompiledKotlinSources(emptyList(), output)
             }
 
@@ -286,7 +286,7 @@ class Kotlin2JsGradlePluginIT : AbstractKotlin2JsGradlePluginIT(false) {
             modifiedFile.modify {
                 it.replace("val x = 0", "val x = \"a\"")
             }
-            build("build") {
+            build("compileKotlinJs", "compileTestKotlinJs") {
                 checkIrCompilationMessage()
                 assertOutputContains(USING_JS_INCREMENTAL_COMPILATION_MESSAGE)
                 val affectedFiles = listOf("A.kt", "useAInLibMain.kt", "useAInAppMain.kt", "useAInAppTest.kt").mapNotNull {
@@ -742,7 +742,7 @@ abstract class AbstractKotlin2JsGradlePluginIT(protected val irBackend: Boolean)
         }
         val options = defaultBuildOptions.copy(jsOptions = jsOptions)
         project("kotlin2JsICProject", gradleVersion, buildOptions = options) {
-            build("build") {
+            build("compileKotlinJs", "compileTestKotlinJs") {
                 checkIrCompilationMessage()
                 assertOutputDoesNotContain(USING_JS_INCREMENTAL_COMPILATION_MESSAGE)
             }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin2JsICProject/app/build.gradle

@@ -1,12 +1,22 @@
-apply plugin: 'org.jetbrains.kotlin.platform.js'
+plugins {
+    id("org.jetbrains.kotlin.js")
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-js:$kotlin_version"
     implementation project(":lib")
 }
 
-def isIrBackend = project.findProperty("kotlin.js.useIrBackend")?.toBoolean() ?: false
+kotlin {
-if (isIrBackend) {
+    js {
-    compileKotlin2Js.kotlinOptions.freeCompilerArgs += ["-Xir-produce-klib-dir", "-Xir-only"]
+        browser {
-    compileTestKotlin2Js.kotlinOptions.freeCompilerArgs += ["-Xir-produce-js"]
+
-}
+        }
+        binaries.executable()
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin2JsICProject/build.gradle

@@ -1,16 +0,0 @@
-buildscript {
-    repositories {
-        mavenLocal()
-        mavenCentral()
-    }
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
-subprojects {
-    repositories {
-        mavenLocal()
-        mavenCentral()
-    }
-}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin2JsICProject/lib/build.gradle

@@ -1,11 +1,20 @@
-apply plugin: 'org.jetbrains.kotlin.platform.js'
+plugins {
+    id("org.jetbrains.kotlin.js")
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-js:$kotlin_version"
 }
 
-def isIrBackend = project.findProperty("kotlin.js.useIrBackend")?.toBoolean() ?: false
+kotlin {
-if (isIrBackend) {
+    js {
-    compileKotlin2Js.kotlinOptions.freeCompilerArgs += ["-Xir-produce-klib-dir", "-Xir-only"]
+        browser {
-    compileTestKotlin2Js.kotlinOptions.freeCompilerArgs += ["-Xir-produce-js"]
+
-}
+        }
+    }
+}