Kraken\_Unit\Event\EventEmitterTest::testApiOnce_AttachesProperOnceHandler_UsingSeveralHandlers PHP Method

    public function testApiOnce_AttachesProperOnceHandler_UsingSeveralHandlers(EventEmitterInterface $emitter)
    {
        $emitter->once('test', $this->expectCallableOnce());
        $emitter->once('test', $this->expectCallableOnce());
        $emitter->emit('test');
        $emitter->emit('test');
    }