public function testGetGroups()
{
$restService = new camundaRestClient(self::$restApi);
$groupRequest = array('name' => 'testgroup', 'id' => 'sales', 'type' => 'Organizational Unit');
$restService->createSingleGroup($groupRequest);
$this->assertEquals('sales', $restService->getGroups()[0]->id);
$groupRequest = array('name' => 'testgroup2', 'id' => 'sales2', 'type' => 'Organizational Unit');
$restService->createSingleGroup($groupRequest);
$this->assertEquals('sales2', $restService->getGroups()[1]->id);
$filteredGroup = array('name' => 'testgroup');
$this->assertEquals('sales', $restService->getGroups($filteredGroup)[0]->id);
$this->assertArrayNotHasKey('1', $restService->getGroups($filteredGroup));
$restService->deleteSingleGroup('sales');
$restService->deleteSingleGroup('sales2');
}