Just in order to see how it looks like I removed the failing test from the test script and ran the test again.

the code

examples/php/phpunit/calc02.php
<?php


require_once(dirname(__FILE__) . '/../includes/mylib.php');

require_once 'PHPUnit/Framework.php';

class AddTest extends PHPUnit_Framework_TestCase {

    public function testAddTwo() {
        $this->assertTrue(2 == add(1, 1));
    }
}


?>

Output

examples/php/phpunit/calc02.php.out
PHPUnit 3.3.17 by Sebastian Bergmann.

.

Time: 0 seconds

OK (1 test, 1 assertion)