rootProject.name = '$PROJECT_B_NAME'
            includeBuild '${file(PROJECT_A_NAME).toURI()}'
        """
        file("$PROJECT_A_NAME/src/main/java/MyClass.java") << javaSourceFile()
        file("$PROJECT_B_NAME/src/main/java/MyClass.java") << javaSourceFile()
    }

    def "can group task output in composite build"() {
        when:
        def result = executer.inDirectory(file(PROJECT_B_NAME)).withTasks('compileJava').run()

    private static final String JAVA_SRC_DIR_PATH = 'src/main/java'

    def "compiler warnings emitted from compilation task are grouped"() {
        given:
        def javaSourceFile = file("$JAVA_SRC_DIR_PATH/MyClass.java")
        def expectedOutput = "${javaSourceFile.absolutePath}:4: warning: [deprecation] Legacy in unnamed package has been deprecated"

        buildFile << """
            apply plugin: 'java'

            compileJava {

            rootProject.name = "test-project"
            """
        )
    }

    protected
    fun givenJavaClassInBuildSrcContains(classBody: String, classAnnotations: String = ""): String =
        javaSourceFile("buildSrc", classBody, classAnnotations)

    protected
    fun givenKotlinClassInBuildSrcContains(classBody: String): String {
        withKotlinDslPluginInBuildSrc()

        withBuildScriptIn(
            baseDir,
            """
                plugins {
                    id("java-library")
                }
            """
        )
        val className = javaSourceFile(baseDir, classBody)
        build(existing(baseDir), "build")
        val jarPath = "$baseDir/build/libs/buildscript.jar"
        assertTrue(existing(jarPath).exists())
        return Pair(className, jarPath)
    }