KT-57224: Add kotlin language version to file report

compiler/build-tools/kotlin-build-statistics/src/org/jetbrains/kotlin/build/report/statistics/file/FileReportService.kt

@@ -278,6 +278,12 @@ class FileReportService(
             p.println("Task '${statisticsData.taskName}' finished in ${formatTime(statisticsData.durationMs)}")
         }
 
+        statisticsData.kotlinLanguageVersion?.also {
+            p.withIndent("Task info:") {
+                p.println("Kotlin language version: $it")
+            }
+        }
+
         if (statisticsData.icLogLines.isNotEmpty()) {
             p.withIndent("Compilation log for task '${statisticsData.taskName}':") {
                 statisticsData.icLogLines.forEach { p.println(it) }

libraries/tools/kotlin-gradle-plugin-integration-tests/build.gradle.kts

@@ -55,6 +55,7 @@ dependencies {
         }
     }
 
+    testImplementation(project(":kotlin-gradle-compiler-types"))
     testImplementation(project(":kotlin-gradle-plugin-idea"))
     testImplementation(testFixtures(project(":kotlin-gradle-plugin-idea")))
     testImplementation(project(":kotlin-gradle-plugin-idea-proto"))

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

@@ -15,6 +15,7 @@ import java.io.ObjectInputStream
 import java.nio.file.Path
 import kotlin.io.path.*
 import kotlin.test.assertTrue
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 
 @DisplayName("Build reports")
 @JvmGradlePluginTests
@@ -54,28 +55,67 @@ class BuildReportsIT : KGPBaseTest() {
     @DisplayName("Build metrics produces valid report")
     @GradleTest
     fun testBuildMetricsSmokeTest(gradleVersion: GradleVersion) {
-        project("simpleProject", gradleVersion) {
-            build("assemble") {
+        testBuildReportInFile("simpleProject", "assemble", gradleVersion)
+    }
+
+    @DisplayName("Build metrics produces valid report for mpp-jvm")
+    @GradleTest
+    fun testBuildMetricsForMppJvm(gradleVersion: GradleVersion) {
+        testBuildReportInFile("mppJvmWithJava", "assemble", gradleVersion)
+    }
+
+    @DisplayName("Build metrics produces valid report for mpp-js")
+    @GradleTest
+    fun testBuildMetricsForMppJs(gradleVersion: GradleVersion) {
+        testBuildReportInFile("kotlin-js-package-module-name", "assemble", gradleVersion)
+    }
+
+    @DisplayName("Build metrics produces valid report for JS project")
+    @GradleTest
+    fun testBuildMetricsForJsProject(gradleVersion: GradleVersion) {
+        testBuildReportInFile("kotlin-js-plugin-project", "compileKotlinJs", gradleVersion,
+                              languageVersion = KotlinVersion.KOTLIN_1_7.version)
+    }
+
+    private fun testBuildReportInFile(project: String, task: String, gradleVersion: GradleVersion,
+                                      languageVersion: String = KotlinVersion.KOTLIN_2_0.version) {
+        project(project, gradleVersion) {
+            build(task) {
                 assertBuildReportPathIsPrinted()
             }
             //Should contains build metrics for all compile kotlin tasks
-            assertFileContains(
-                reportFile,
-                "Time metrics:",
-                "Run compilation:",
-                "Incremental compilation in daemon:",
-                "Size metrics:",
-                "Total size of the cache directory:",
-                "Total compiler iteration:",
-                "ABI snapshot size:",
-                //for non-incremental builds
-                "Build attributes:",
-                "REBUILD_REASON:",
-                //gc metrics
-                "GC count:",
-                "GC time:",
-            )
+            validateBuildReportFile(KotlinVersion.DEFAULT.version)
         }
+
+        project(project, gradleVersion, buildOptions = defaultBuildOptions.copy(languageVersion = languageVersion)) {
+            build(task, buildOptions = buildOptions.copy(languageVersion = languageVersion)) {
+                assertBuildReportPathIsPrinted()
+            }
+            //Should contains build metrics for all compile kotlin tasks
+            validateBuildReportFile(languageVersion)
+        }
+    }
+
+    private fun TestProject.validateBuildReportFile(kotlinLanguageVersion: String) {
+        assertFileContains(
+            reportFile,
+            "Time metrics:",
+            "Run compilation:",
+            "Incremental compilation in daemon:",
+            "Size metrics:",
+            "Total size of the cache directory:",
+            "Total compiler iteration:",
+            "ABI snapshot size:",
+            //for non-incremental builds
+            "Build attributes:",
+            "REBUILD_REASON:",
+            //gc metrics
+            "GC count:",
+            "GC time:",
+            //task info
+            "Task info:",
+            "Kotlin language version: $kotlinLanguageVersion",
+        )
     }
 
     @DisplayName("Compiler build metrics report is produced")

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

@@ -565,6 +565,7 @@ internal fun Path.enableAndroidSdk() {
     applyAndroidTestFixes()
 }
 
+
 internal fun Path.enableCacheRedirector() {
     // Path relative to the current gradle module project dir
     val redirectorScript = Paths.get("../../../repo/scripts/cache-redirector.settings.gradle.kts")