content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.camel.component.mail;
  
  import jakarta.mail.Flags;
  import jakarta.mail.Folder;
  import jakarta.mail.Message;
  import jakarta.mail.Store;
  import jakarta.mail.internet.MimeMessage;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.Processor;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mail.Mailbox.MailboxUser;
  import org.apache.camel.component.mail.Mailbox.Protocol;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  /**
   * Unit test for rollback option.
   */
  public class MailDoNotDeleteIfProcessFailsTest extends CamelTestSupport {
      private static final MailboxUser claus = Mailbox.getOrCreateUser("claus", "secret");
  
      private static int counter;
  
      @Override
      public void doPreSetup() throws Exception {
          prepareMailbox();
      }
  
      @Test
      public void testRoolbackIfProcessFails() throws Exception {
          getMockEndpoint("mock:result").expectedBodiesReceived("Message 1");
          // the first 2 attempt should fail
          getMockEndpoint("mock:error").expectedMessageCount(2);
  
          MockEndpoint.assertIsSatisfied(context);
  
          assertEquals(3, counter);
      }
  
      private void prepareMailbox() throws Exception {
          // connect to mailbox
          Mailbox.clearAll();
  
          JavaMailSender sender = new DefaultJavaMailSender();
          Store store = sender.getSession().getStore("imap");
          store.connect("localhost", Mailbox.getPort(Protocol.imap), claus.getLogin(), claus.getPassword());
          Folder folder = store.getFolder("INBOX");
          folder.open(Folder.READ_WRITE);
          folder.expunge();
  
          // inserts two new messages
          Message[] msg = new Message[2];
          msg[0] = new MimeMessage(sender.getSession());
          msg[0].setText("Message 1");
          msg[0].setHeader("Message-ID", "0");
          msg[0].setFlag(Flags.Flag.SEEN, false);
          msg[1] = new MimeMessage(sender.getSession());
          msg[1].setText("Message 2");
          msg[0].setHeader("Message-ID", "1");
          msg[1].setFlag(Flags.Flag.SEEN, true);
          folder.appendMessages(msg);
          folder.close(true);
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  // no redelivery for unit test as we want it to be polled next time
                  onException(IllegalArgumentException.class).to("mock:error");
  
                  from(claus.uriPrefix(Protocol.imap) + "&unseen=true&initialDelay=100&delay=100")
                          .process(new Processor() {
                              public void process(Exchange exchange) {
                                  counter++;
                                  if (counter < 3) {
                                      throw new IllegalArgumentException("Forced by unit test");
                                  }
                              }
                          })
                          .to("mock:result");
              }
          };
      }
  
  }
  