add parent tasks to dokka-integration-tests

dokka-integration-tests/build.gradle.kts

@@ -1,3 +1,33 @@
 /*
  * Copyright 2014-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
  */
+
+plugins {
+    base
+}
+
+addDependencyToSubprojectTasks("assemble")
+addDependencyToSubprojectTasks("build")
+addDependencyToSubprojectTasks("clean")
+addDependencyToSubprojectTasks("check")
+
+registerParentTask("integrationTest", groupName = "verification")
+
+fun addDependencyToSubprojectTasks(existingTaskName: String) {
+    tasks.named(existingTaskName) {
+        dependsOn(subprojectTasks(existingTaskName))
+    }
+}
+
+fun registerParentTask(taskName: String, groupName: String) {
+    tasks.register(taskName) {
+        group = groupName
+        description = "Runs $taskName tasks of all subprojects"
+        dependsOn(subprojectTasks(taskName))
+    }
+}
+
+fun subprojectTasks(taskName: String): List<String> =
+    subprojects
+        .filter { it.getTasksByName(taskName, false).isNotEmpty() }
+        .map { ":${it.name}:$taskName" }