@Issue(['GRADLE-2440', 'GRADLE-2579'])
    def 'stale output file is removed after input source directory is emptied.'() {
        def taskWithSources = new TaskWithSources()
        taskWithSources.createInputs()
        buildScript(taskWithSources.buildScript)

        when:
        succeeds(taskWithSources.taskPath)

        then:
        taskWithSources.outputFile.exists()