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

    public function testApiCopyEvent_AttachesOnProxyListenerForEvent(EventEmitterInterface $emitter)
    {
        $listener = $this->createEventEmitter();
        $emitter->copyEvent($listener, 'A');
        $listener->on('A', $this->expectCallableOnce());
        $listener->on('B', $this->expectCallableNever());
        $emitter->emit('A');
        $emitter->emit('B');
    }