Example of SimpleTest unit test with mock class

CurlService.php

<?php

class CurlService {
	
	function __construct($url)	{
		$this->url = $url;
	}
	
	private $url;

	function getResponse($post) {		

		$ch = curl_init();
        
                curl_setopt($ch, CURLOPT_URL, $this->url);
		curl_setopt($ch, CURLOPT_POST, 1);  
		curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
                curl_setopt($ch, CURLOPT_HEADER, 0);
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

                $ats = curl_exec($ch);
                curl_close($ch);

		return $ats;
	}

}


?>

rate_tests.php

<?php

require_once('simpletest/autorun.php');
require_once('simpletest/unit_tester.php');
require_once('simpletest/mock_objects.php');

require_once('../USPSRateService.php');
require_once('../CurlService.php');

Mock::generate('CurlService');

class RateTests extends UnitTestCase {	

	function testXMLParser() {
		$curl = &new MockCurlService();
		$curl->setReturnValue('getResponse', 96);
		
		$svc = new USPSRateService($curl, "066PRADE4585");	
		$rate = $svc->getInternationalRate("Albania", 2, 0);
		$this->assertEqual($rate, 96);
	}
}

?>