/* Copyright 2002-2022 CS GROUP
    * Licensed to CS GROUP (CS) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * CS 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.orekit.propagation.events.handlers;
  
  import org.hipparchus.ode.events.Action;
  import org.junit.Assert;
  import org.junit.Test;
  import org.orekit.propagation.SpacecraftState;
  import org.orekit.propagation.events.EventDetector;
  import org.orekit.time.AbsoluteDate;
  
  public class EventHandlerTest {
  
      @Test
      public void testEnums() {
          // this test is here only for test coverage ...
  
          Assert.assertEquals(5, Action.values().length);
          Assert.assertSame(Action.STOP,              Action.valueOf("STOP"));
          Assert.assertSame(Action.RESET_STATE,       Action.valueOf("RESET_STATE"));
          Assert.assertSame(Action.RESET_DERIVATIVES, Action.valueOf("RESET_DERIVATIVES"));
          Assert.assertSame(Action.RESET_EVENTS,      Action.valueOf("RESET_EVENTS"));
          Assert.assertSame(Action.CONTINUE,          Action.valueOf("CONTINUE"));
  
      }
  
      @Test
      public void testIssue721() {
  
          // Create detector
          final Detector detector = new Detector();
          Assert.assertFalse(detector.isInitialized());
  
          // Create handler
          final Handler handler = new Handler();
          handler.init(null, null, detector);
          Assert.assertTrue(detector.isInitialized());
  
      }
  
      private static class Detector implements EventDetector {
  
          private boolean initialized;
  
          public Detector() {
              this.initialized = false;
          }
   
          public boolean isInitialized() {
              return initialized;
          }
  
          @Override
          public void init(SpacecraftState s0, AbsoluteDate t) {
              initialized = true;
          }
  
          @Override
          public double g(SpacecraftState s) {
              return 0;
          }
  
          @Override
          public double getThreshold() {
              return 0;
          }
  
          @Override
          public double getMaxCheckInterval() {
              return 0;
          }
  
          @Override
          public int getMaxIterationCount() {
              return 0;
          }
  
          @Override
          public Action eventOccurred(SpacecraftState s, boolean increasing) {
              return Action.CONTINUE;
          }
      }
  
      private static class Handler implements EventHandler<Detector> {
  
         @Override
         public void init(SpacecraftState initialState, AbsoluteDate target,
                          Detector detector) {
             detector.init(initialState, target);
         }
 
         @Override
         public Action eventOccurred(SpacecraftState s, Detector detector,
                                     boolean increasing) {
             return detector.eventOccurred(s, increasing);
         }
 
     }
 }