	public function test_create_nonce_url() {
        $url = yourls_nonce_url( rand_str(), rand_str(), rand_str(), rand_str() );
        $this->assertTrue( is_string($url) );
        // $this->assertIsString($url);
    }
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.