public function testDirAccessors()
{
$url = new \r8\URL();
$this->assertFalse($url->dirExists());
$this->assertNull($url->getDir());
$this->assertSame($url, $url->setDir("/dir/path"));
$this->assertTrue($url->dirExists());
$this->assertSame("/dir/path/", $url->getDir());
$this->assertSame($url, $url->clearDir());
$this->assertFalse($url->dirExists());
$this->assertNull($url->getDir());
$this->assertSame($url, $url->setDir("dir/path/"));
$this->assertTrue($url->dirExists());
$this->assertSame("/dir/path/", $url->getDir());
$this->assertSame($url, $url->setDir(" "));
$this->assertFalse($url->dirExists());
$this->assertNull($url->getDir());
}