Sokil\Mongo\DocumentTest::testMergeOnUpdate PHP Method

    public function testMergeOnUpdate()
    {
        // save document
        $document = $this->collection->createDocument(array('p' => 'pv'))->save();
        // update document
        $document->set('f1', 'fv1')->merge(array('a1' => 'av1', 'a2' => 'av2'));
        $documentData = $document->toArray();
        unset($documentData['_id']);
        $this->assertEquals(array('p' => 'pv', 'f1' => 'fv1', 'a1' => 'av1', 'a2' => 'av2'), $documentData);
        $document->save();
        // test
        $foundDocumentData = $this->collection->getDocumentDirectly($document->getId())->toArray();
        unset($foundDocumentData['_id']);
        $this->assertEquals(array('p' => 'pv', 'f1' => 'fv1', 'a1' => 'av1', 'a2' => 'av2'), $foundDocumentData);
    }