Interesting Load of CI from an external class

[eluser][email protected][/eluser]
Hey guys, I am trying to load the CI framework from an external class. The framework is loading fine with no errors in the logs.

I am trying two scenarios here, and for scenario #1, am getting result: "12"

<?php
require_once('../../../simpletest/unit_tester.php');
require_once('../../../simpletest/reporter.php');
require_once('../../../index.php'); //Load CI Framework

class admin_model_test extends UnitTestCase {

function testGetAllDesigns() {

echo '1';
$CI =&get;_instance();
echo'2';
$CI->load->model('admin_model');
echo '3';
$arr = $CI->admin_model->getAllDesigns();
echo '4';
$this->assertTrue(true);
echo '5';
}
}

if(TESTING=='TESTING') {
$test = & new admin_model_test();
$test->run(new HtmlReporter());
}
?>

For scenario #2 (comment out CI stuff), I am getting "12345", and then the test case result.

<?php
require_once('../../../simpletest/unit_tester.php');
require_once('../../../simpletest/reporter.php');
require_once('../../../test_index.php');

class admin_model_test extends UnitTestCase {

function testGetAllDesigns() {

echo '1';
//$CI =&get;_instance();
echo'2';
//$CI->load->model('admin_model');
echo '3';
//$arr = $CI->admin_model->getAllDesigns();
echo '4';
$this->assertTrue(true);
echo '5';
}
}

$test = & new admin_model_test();
$test->run(new HtmlReporter());

?>

Currently, the "&get;_instance()" is returning the default_controller class (Home Class). How can I get it to return the CI base class, and then call a ($CI->load->model(...)) on it?