redirector.start()
        System.out.print('this is stdout')
        System.out.flush()

        then:
        1 * stdOutListener.onOutput('this is stdout')
    }

    def canRedirectMultipleTimes() {
        when:
        redirector.redirectStandardErrorTo(stdErrListener)
        redirector.start()
        redirector.stop()
        redirector.redirectStandardOutputTo(stdOutListener)