class YourTestCase extends PHPUnit_Framework_TestCase {
    ...
    static private $messages = array();
    ...
    static public function assertSame($var1,$var2,$message = '') {
        parent::assertSame($var1,$message);
        // assertSame() throws an exception if not true,so the following
        // won't occur unless the messages actually are the same
        $success = print_r($var1,true) . ' is the same as '
                 . print_r($var2,true);
        self::$messages = array_merge(self::$messages,array($success));
    }

    static public function tearDownAfterClass() {
        echo implode("\n",self::$messages);
    }
}

当然,tearDownAfterClass()可能不足以适应你的喜好.这与断言失败是不一样的.