Sokil\Mongo\CollectionTest::testGetDocumentByStringId PHP Method

    public function testGetDocumentByStringId()
    {
        $document = $this->collection->createDocument(array('_id' => 'abcdef', 'param' => 'value'))->save();
        // get document
        $foundDocument = $this->collection->getDocument('abcdef');
        $this->assertNotNull($foundDocument);
        $this->assertEquals($document->getId(), $foundDocument->getId());
    }