Sokil\Mongo\DocumentEventTest::testAttachEvent PHP Method

    public function testAttachEvent()
    {
        $document = $this->collection->createDocument(array('p' => 'v'));
        $document->attachEvent('someEventName', function () {
        });
        $this->assertTrue($document->hasEvent('someEventName'));
        $this->assertFalse($document->hasEvent('someUNEXISTEDEventName'));
    }