public function testString()
{
$value = 'http://*****:*****@host:8080/path?name=value#fragment';
$url = new Url($value);
$this->assertEquals($value, (string) $url);
$this->assertEquals($value, $url->toString());
$this->assertEquals('http', $url->scheme());
$this->assertEquals('user', $url->user());
$this->assertEquals('pass', $url->pass());
$this->assertEquals('host', $url->host());
$this->assertEquals('8080', $url->port());
$this->assertEquals('/path', $url->path());
$this->assertEquals('name=value', $url->query());
$this->assertEquals('fragment', $url->fragment());
$this->assertEquals('http://*****:*****@host:8080', $url->toPart(Url::PART_PORT)->toString());
$value = 'http://user@host/';
$url = new Url($value);
$this->assertEquals($value, $url->toString());
$value = 'host/';
$url = new Url($value);
$this->assertEquals($value, $url->toString());
$value = '?test=1';
$url = new Url($value);
$this->assertEquals($value, $url->toString());
}