@Test(expected=ProblematicTransactionException.class)
public void testRetornoInValido(){
Mockery mockery = new Mockery();
final HttpServletRequest request = mockery.mock(HttpServletRequest.class);
mockery.checking(new Expectations(){
{
one(request).getParameter("vpc_TxnResponseCode");will(returnValue("1"));
one(request).getParameter("vpc_Message");will(returnValue("Erro"));
one(request).getParameter("vpc_SecureHash");will(returnValue("123456789012345"));
one(request).getParameter("vpc_Merchant");will(returnValue("123456"));