public function testParsingAcceptHeader() {
		$chrome = array(
			'application/xml',
			'application/xhtml+xml',
			'text/html;q=0.9',
			'text/plain;q=0.8',
			'image/png',
			'*/*;q=0.5'
		);
		$firefox = array(
			'text/html',
			'application/xhtml+xml',
			'application/xml;q=0.9',
			'*/*;q=0.8'
		);
		$safari = array(
			'application/xml',
			'application/xhtml+xml',
			'text/html;q=0.9',
			'text/plain;q=0.8',
			'image/png',
			'*/*;q=0.5'
		);
		$opera = array(
			'text/html',
			'application/xml;q=0.9',
			'application/xhtml+xml',
			'image/png',
			'image/jpeg',
			'image/gif',
			'image/x-xbitmap',
			'*/*;q=0.1'
		);
		$android = array(
			'application/xml',
			'application/xhtml+xml',
			'text/html;q=0.9',
			'text/plain;q=0.8',
			'image/png',
			'*/*;q=0.5',
			'application/youtube-client'
		);
		$request = new Request(array('env' => array('HTTP_ACCEPT' => join(',', $chrome))));
		$this->assertEqual('html', $request->accepts());
		$this->assertTrue(array_search('text/plain', $request->accepts(true)), 4);

		$request = new Request(array('env' => array('HTTP_ACCEPT' => join(',', $safari))));
		$this->assertEqual('html', $request->accepts());

		$request = new Request(array('env' => array('HTTP_ACCEPT' => join(',', $firefox))));
		$this->assertEqual('html', $request->accepts());

		$request = new Request(array('env' => array('HTTP_ACCEPT' => join(',', $opera))));
		$this->assertEqual('html', $request->accepts());

		$request = new Request(array('env' => array('HTTP_ACCEPT' => join(',', $chrome))));
		$request->params['type'] = 'txt';

		$result = $request->accepts(true);
		$this->assertEqual('text/plain', $result[0]);

		$request = new Request(array('env' => array('HTTP_ACCEPT' => join(',', $android))));
		$this->assertEqual('html', $request->accepts());
	}