[K/JS] Do not run generate-file-tests task if the source was not changed

js/js.tests/build.gradle.kts

@@ -156,55 +156,74 @@ val unzipJsShell by task<Copy> {
 val testDataDir = project(":js:js.translator").projectDir.resolve("testData")
 val typescriptTestsDir = testDataDir.resolve("typescript-export")
 
-val generateJsExportOnFileTestFilesForTS by task<Copy> {
-    val exportFileDirPostfix = "-in-exported-file"
-
-    from(typescriptTestsDir) {
-        include("**/*.kt")
-        include("**/*.ts")
-        include("**/tsconfig.json")
-        exclude("selective-export/*")
-        exclude("implicit-export/*")
-        exclude("inheritance/*")
-        exclude("strict-implicit-export/*")
-        exclude("*$exportFileDirPostfix")
-
-        eachFile {
-            path = "${relativePath.parent}$exportFileDirPostfix/$name"
-
-            var isFirstLine = true
-            filter {
-                when {
-                    isFirstLine && name.endsWith(".kt") -> "/** This file is generated by {@link :js:js.test:generateJsExportOnFileTestFilesForTS} task. DO NOT MODIFY MANUALLY */\n\n$it"
-                        .also { isFirstLine = false }
-
-                    it.contains("// FILE") -> "$it\n\n@file:JsExport"
-                    else -> it.replace("@JsExport", "")
-                }
-            }
-
-        }
-
-    }
-
-    into(typescriptTestsDir)
-}
-
 
 val installTsDependencies = task<NpmTask>("installTsDependencies") {
     workingDir.set(testDataDir)
     args.set(listOf("install"))
 }
 
-fun sequential(first: Task, tasks: List<Task>): Task {
-    tasks.fold(first) { previousTask, currentTask ->
-        currentTask.dependsOn(previousTask)
+fun sequential(first: Task? = null, tasks: List<Task>): Task {
+    val callback = { previousTask: Task, currentTask: Task -> currentTask.dependsOn(previousTask) }
+    if (first != null) {
+        tasks.fold(first, callback)
+    } else {
+        tasks.reduce(callback)
     }
     return tasks.last()
 }
 
+val exportFileDirPostfix = "-in-exported-file"
+
+fun generateJsExportOnFileTestFor(dir: String): Task = task<Copy>("generate-js-export-on-file-for-$dir") {
+    val dirPostfix = exportFileDirPostfix
+    val inputDir = fileTree(typescriptTestsDir.resolve(dir))
+    val outputDir = typescriptTestsDir.resolve("$dir$dirPostfix")
+
+    inputs.files(inputDir.matching {
+        include("**/*.kt")
+        include("**/*.ts")
+        include("**/tsconfig.json")
+    })
+    outputs.dir(outputDir.toPath())
+
+    from(inputDir) {
+        include("**/*.kt")
+        include("**/*.ts")
+        include("**/tsconfig.json")
+    }
+
+    eachFile {
+        var isFirstLine = true
+        filter {
+            when {
+                isFirstLine && name.endsWith(".kt") -> "/** This file is generated by {@link :js:js.test:generateJsExportOnFileTestFilesForTS} task. DO NOT MODIFY MANUALLY */\n\n$it"
+                    .also { isFirstLine = false }
+
+                it.contains("// FILE") -> "$it\n\n@file:JsExport"
+                else -> it.replace("@JsExport", "")
+            }
+        }
+    }
+
+    into(outputDir)
+}
+
+val generateTypeScriptJsExportOnFileTests = sequential(
+    tasks = typescriptTestsDir
+        .listFiles { it: File ->
+            it.isDirectory &&
+                    !it.path.endsWith("/selective-export") &&
+                    !it.path.endsWith("/implicit-export") &&
+                    !it.path.endsWith("/inheritance") &&
+                    !it.path.endsWith("/strict-implicit-export") &&
+                    !it.path.endsWith(exportFileDirPostfix)
+        }
+        .map { generateJsExportOnFileTestFor(it.name) }
+)
+
+
 fun generateTypeScriptTestFor(dir: String): Task = task<NpmTask>("generate-ts-for-$dir") {
-    val baseDir = fileTree(testDataDir.resolve("./typescript-export/$dir"))
+    val baseDir = fileTree(typescriptTestsDir.resolve(dir))
 
     workingDir.set(testDataDir)
     inputs.files(baseDir.include("*.ts"))
@@ -214,8 +233,7 @@ fun generateTypeScriptTestFor(dir: String): Task = task<NpmTask>("generate-ts-fo
 
 val generateTypeScriptTests = sequential(
     installTsDependencies,
-    typescriptTestsDir.listFiles()
-        .filter { it.isDirectory }
+    typescriptTestsDir.listFiles { it: File -> it.isDirectory }
         .map { generateTypeScriptTestFor(it.name) }
 )
 
@@ -349,7 +367,9 @@ testsJar {}
 
 val generateTests by generator("org.jetbrains.kotlin.generators.tests.GenerateJsTestsKt") {
     dependsOn(":compiler:generateTestData")
-    dependsOn(generateJsExportOnFileTestFilesForTS)
+    if (!project.hasProperty("teamcity")) {
+        dependsOn(generateTypeScriptJsExportOnFileTests)
+    }
 }
 
 val prepareMochaTestData by tasks.registering(Copy::class) {