[Gradle] Test that task jvmMainClasses depends on compileJava

^KT-31459

libraries/tools/kotlin-gradle-plugin/src/functionalTest/kotlin/org/jetbrains/kotlin/gradle/KT31459JvmMainClassesTest.kt

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2010-2022 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.
+ */
+
+package org.jetbrains.kotlin.gradle
+
+import org.gradle.api.Task
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class KT31459JvmMainClassesTest {
+
+    @Test
+    fun `jvmMainClasses should depend on compileJava`() {
+        val project = buildProjectWithMPP {
+            kotlin {
+                jvm {
+                    withJava()
+                }
+            }
+        }
+
+        project.evaluate()
+
+        val task = project.tasks.getByName("jvmMainClasses")
+
+        assertEquals(
+            setOf("compileKotlinJvm", "compileJava", "jvmProcessResources"),
+            task.allDependencies
+        )
+    }
+
+    /**
+     * Returns names of all tasks that given task depends on
+     */
+    private val Task.allDependencies: Set<String> get() = taskDependencies
+        .getDependencies(this)
+        .map { it.name }
+        .toSet()
+}