public function testUpdateGroup()
{
$restService = new camundaRestClient(self::$restApi);
$groupRequest = array('name' => 'testgroup', 'id' => 'sales', 'type' => 'Organizational Unit');
$restService->createSingleGroup($groupRequest);
$this->assertEquals('testgroup', $restService->getSingleGroup('sales')->name);
$update = array('name' => 'testgroup2', 'id' => 'sales', 'type' => 'Organizational Unit');
$restService->updateSingleGroup('sales', $update);
$this->assertEquals('testgroup2', $restService->getSingleGroup('sales')->name);
$restService->deleteSingleGroup('sales');
}