Sokil\Mongo\CursorTest::testMap PHP Method

    public function testMap()
    {
        $this->collection->createDocument(array('param' => 'value1'))->save();
        $this->collection->createDocument(array('param' => 'value2'))->save();
        // test
        $result = $this->collection->find()->map(function (Document $document) {
            return $document->param;
        });
        $this->assertEquals(array('value1', 'value2'), array_values($result));
    }