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 org.apache.camel.CamelExecutionException;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.Test;
  
  import static org.apache.camel.test.junit5.TestSupport.assertIsInstanceOf;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.fail;
  
  /**
   * Unit test for no recipients
   */
  public class MailNoRecipientsTest extends CamelTestSupport {
  
      @Test
      public void testMailNoRecipients() {
          try {
              template.sendBody("direct:a", "Hello World");
              fail("Should have thrown exception");
          } catch (CamelExecutionException e) {
              IllegalArgumentException iae = assertIsInstanceOf(IllegalArgumentException.class, e.getCause());
              assertEquals("The mail message does not have any recipients set.", iae.getMessage());
          }
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  from("direct:a").to("smtp://localhost");
              }
          };
      }
  }
  