1   /* Copyright 2002-2022 CS GROUP
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.orekit.propagation.events.handlers;
18  
19  import org.hipparchus.ode.events.Action;
20  import org.junit.Assert;
21  import org.junit.Test;
22  import org.orekit.frames.FramesFactory;
23  import org.orekit.orbits.KeplerianOrbit;
24  import org.orekit.orbits.PositionAngle;
25  import org.orekit.propagation.SpacecraftState;
26  import org.orekit.propagation.events.EventDetector;
27  import org.orekit.time.AbsoluteDate;
28  import org.orekit.utils.Constants;
29  
30  public class StopOnIncreasingTest {
31  
32      @Test
33      public void testNoReset() {
34          SpacecraftState s = new SpacecraftState(new KeplerianOrbit(24464560.0, 0.7311, 0.122138, 3.10686, 1.00681,
35                                                                     0.048363, PositionAngle.MEAN,
36                                                                     FramesFactory.getEME2000(),
37                                                                     AbsoluteDate.J2000_EPOCH,
38                                                                     Constants.EIGEN5C_EARTH_MU));
39          Assert.assertSame(s, new StopOnIncreasing<EventDetector>().resetState(null, s));
40      }
41  
42      @Test
43      public void testIncreasing() {
44          SpacecraftState s = new SpacecraftState(new KeplerianOrbit(24464560.0, 0.7311, 0.122138, 3.10686, 1.00681,
45                                                                     0.048363, PositionAngle.MEAN,
46                                                                     FramesFactory.getEME2000(),
47                                                                     AbsoluteDate.J2000_EPOCH,
48                                                                     Constants.EIGEN5C_EARTH_MU));
49          Assert.assertSame(Action.STOP, new StopOnIncreasing<EventDetector>().eventOccurred(s, null, true));
50      }
51  
52      @Test
53      public void testDecreasing() {
54          SpacecraftState s = new SpacecraftState(new KeplerianOrbit(24464560.0, 0.7311, 0.122138, 3.10686, 1.00681,
55                                                                     0.048363, PositionAngle.MEAN,
56                                                                     FramesFactory.getEME2000(),
57                                                                     AbsoluteDate.J2000_EPOCH,
58                                                                     Constants.EIGEN5C_EARTH_MU));
59          Assert.assertSame(Action.CONTINUE, new StopOnIncreasing<EventDetector>().eventOccurred(s, null, false));
60      }
61  
62  }
63