lithium\tests\cases\data\entity\DocumentTest::testIdGetDoesNotSet PHP Method

    public function testIdGetDoesNotSet()
    {
        $document = MockDocumentPost::create();
        $message = 'The `_id` key should not be set.';
        $this->assertFalse(array_key_exists('_id', $document->data()), $message);
        $document->_id === "";
        $this->assertFalse(array_key_exists('_id', $document->data()), $message);
    }