/*
    * 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.commons.scxml2.model;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.commons.scxml2.SCXMLExecutor;
  import org.apache.commons.scxml2.SCXMLIOProcessor;
  import org.apache.commons.scxml2.SCXMLTestHelper;
  import org.apache.commons.scxml2.TriggerEvent;
  import org.apache.commons.scxml2.env.SimpleDispatcher;
  import org.junit.Assert;
  import org.junit.Test;
  
  public class SendTest {
  
      @Test
      public void testNamelistOrderPreserved() throws Exception {
          final List<Object> payloads = new ArrayList<Object>();
          final SCXML scxml = SCXMLTestHelper.parse("org/apache/commons/scxml2/model/send-test-01.xml");
          final SCXMLExecutor exec = SCXMLTestHelper.getExecutor(scxml, null, new SimpleDispatcher() {
              @Override
              public void send(final Map<String, SCXMLIOProcessor> ioProcessors, final String id, final String target,
                      final String type, final String event, final Object data, final Object hints, final long delay) {
                  payloads.add(data);
                  super.send(ioProcessors, id, target, type, event, data, hints, delay);
              }
          });
          exec.go();
          TriggerEvent te = new TriggerEvent("event.foo", TriggerEvent.SIGNAL_EVENT, new Integer(3));
          SCXMLTestHelper.fireEvent(exec, te);
  
          Assert.assertFalse("Payloads empty.", payloads.isEmpty());
          Assert.assertTrue("Payload is not a map.", payloads.get(0) instanceof Map);
          Map<String, Object> firstPayload = (Map<String, Object>) payloads.get(0);
          Assert.assertEquals("Only two in the namelist data expected.", 2, firstPayload.size());
  
          Assert.assertEquals("Unexpected value for 'one'.", 1.0, firstPayload.get("one"));
          Assert.assertEquals("Unexpected value for 'two'.", 2.0, firstPayload.get("two"));
  
          // Note: the standard allows specifying the value of the namelist attribute of the <send> element
          // as space-separated list of values, which implies an ordered sequence of items.
          final Iterator<String> it = firstPayload.keySet().iterator();
          Assert.assertEquals("The first one in the namelist must be 'one'.", "one", it.next());
          Assert.assertEquals("The first one in the namelist must be 'two'.", "two", it.next());
      }
  }