/*
    *  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.mina.statemachine;
  
  import org.apache.mina.statemachine.State;
  import org.apache.mina.statemachine.transition.Transition;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import com.agical.rmock.extension.junit.RMockTestCase;
  
  /**
   * Tests {@link State}.
   *
   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
   */
  public class StateTest extends RMockTestCase {
      State state;
      Transition transition1;
      Transition transition2;
      Transition transition3;
  
      @BeforeClass
      protected void setUp() throws Exception {
          state = new State("test");
          transition1 = (Transition) mock(Transition.class);
          transition2 = transition1; //(Transition) mock(Transition.class);
          transition3 = transition1; //(Transition) mock(Transition.class);
      }
  
      @Test
      public void testAddFirstTransition() throws Exception {
          assertTrue(state.getTransitions().isEmpty());
          state.addTransition(transition1);
          assertFalse(state.getTransitions().isEmpty());
          assertEquals(1, state.getTransitions().size());
          assertSame(transition1, state.getTransitions().get(0));
      }
  
      @Test
      public void testUnweightedTransitions() throws Exception {
          assertTrue(state.getTransitions().isEmpty());
          state.addTransition(transition1);
          state.addTransition(transition2);
          state.addTransition(transition3);
          assertEquals(3, state.getTransitions().size());
          assertSame(transition1, state.getTransitions().get(0));
          assertSame(transition2, state.getTransitions().get(1));
          assertSame(transition3, state.getTransitions().get(2));
      }
      
      @Test
      public void testWeightedTransitions() throws Exception {
          assertTrue(state.getTransitions().isEmpty());
          state.addTransition(transition1, 10);
          state.addTransition(transition2, 5);
          state.addTransition(transition3, 7);
          assertEquals(3, state.getTransitions().size());
          assertSame(transition2, state.getTransitions().get(0));
          assertSame(transition3, state.getTransitions().get(1));
          assertSame(transition1, state.getTransitions().get(2));
      }
  
      @Test
      public void testAddTransitionReturnsSelf() throws Exception {
          assertSame(state, state.addTransition(transition1));
      }
  
      @Test
      public void testAddNullTransitionThrowsException() throws Exception {
          try {
              state.addTransition(null);
              fail("null transition added. IllegalArgumentException expected.");
          } catch (IllegalArgumentException npe) {
          }
      }
      
  }