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

    public function testApiRemoveListener_RemovesListener_WhenListenerIsPresent(EventEmitterInterface $emitter)
    {
        $never = $this->expectCallableNever();
        $once = $this->expectCallableOnce();
        $emitter->on('test', $never);
        $emitter->on('test', $once);
        $emitter->removeListener('test', $never);
        $emitter->emit('test');
    }