Sokil\Mongo\CollectionTest::testUpdateExistedDocument PHP Method

    public function testUpdateExistedDocument()
    {
        // create document
        $document = $this->collection->createDocument(array('param' => 'value'))->save();
        // update document
        $document->set('param', 'new-value')->save();
        // test
        $document = $this->collection->getDocument($document->getId());
        $this->assertEquals('new-value', $document->param);
    }