Unit test configuration for the administration side of a Joomla! component

bootstrap.php

<?php

error_reporting(E_ALL);
define('_JEXEC', 1);
define('JPATH_BASE','*** where is joomla installed ? ***');
define('JOOMLA_ADMIN', JPATH_BASE . 'administrator'); // want to test admin side

$_SERVER['HTTP_HOST'] = 'localhost';
$_SERVER['REQUEST_METHOD'] = 'GET';

include_once JOOMLA_ADMIN . '/includes/defines.php';
require_once JPATH_ADMINISTRATOR . '/includes/framework.php';

$app = JFactory::getApplication('administrator');

phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit bootstrap="bootstrap.php"
    colors="true"
    convertErrorsToExceptions="true"
    convertNoticesToExceptions="true"
    convertWarningsToExceptions="true"
    processIsolation="false"
    stopOnFailure="false"
    syntaxCheck="false"
    verbose="true">
</phpunit>

sampleTest.php

<?php
class SampleTest extends \PHPUnit_Framework_TestCase {

    public function thisIsASample(){
    	JModelLegacy::addIncludePath("*** WHERE TO LOOK FOR MODELS? **** ");
        $model = JModelLegacy::getInstance('*** A MODEL ***','*** THE PREFIX ***');
        $someVar = $model->someMethod();
        $this->assertNotEmpty($someVar);
    }
}

Execute using:

$ phpunit .

(Note the DOT at the end of line)