public function testTrackContext()
{
$tracking = new Ups\Tracking();
$tracking->setRequest($request = new RequestMock(null, '/Track/Response2.xml'));
$tracking->setContext('unit test');
$tracking->track('1Z12345E0000000000');
$response = $tracking->getResponse()->getResponse();
// Test context
$this->assertEquals('unit test', $response->Response->TransactionReference->CustomerContext);
}
