1   /* Copyright 2002-2025 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
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16   */
17  package org.orekit.propagation.events.handlers;
18  
19  import org.hipparchus.ode.events.Action;
20  import org.junit.jupiter.api.Assertions;
21  import org.junit.jupiter.api.Test;
22  import org.orekit.frames.FramesFactory;
23  import org.orekit.orbits.KeplerianOrbit;
24  import org.orekit.orbits.PositionAngleType;
25  import org.orekit.propagation.SpacecraftState;
26  import org.orekit.time.AbsoluteDate;
27  import org.orekit.utils.Constants;
28  
29  public class StopOnIncreasingTest {
30  
31      @Test
32      public void testNoReset() {
33          SpacecraftState s = new SpacecraftState(new KeplerianOrbit(24464560.0, 0.7311, 0.122138, 3.10686, 1.00681,
34                                                                     0.048363, PositionAngleType.MEAN,
35                                                                     FramesFactory.getEME2000(),
36                                                                     AbsoluteDate.J2000_EPOCH,
37                                                                     Constants.EIGEN5C_EARTH_MU));
38          Assertions.assertSame(s, new StopOnIncreasing().resetState(null, s));
39      }
40  
41      @Test
42      public void testIncreasing() {
43          SpacecraftState s = new SpacecraftState(new KeplerianOrbit(24464560.0, 0.7311, 0.122138, 3.10686, 1.00681,
44                                                                     0.048363, PositionAngleType.MEAN,
45                                                                     FramesFactory.getEME2000(),
46                                                                     AbsoluteDate.J2000_EPOCH,
47                                                                     Constants.EIGEN5C_EARTH_MU));
48          Assertions.assertSame(Action.STOP, new StopOnIncreasing().eventOccurred(s, null, true));
49      }
50  
51      @Test
52      public void testDecreasing() {
53          SpacecraftState s = new SpacecraftState(new KeplerianOrbit(24464560.0, 0.7311, 0.122138, 3.10686, 1.00681,
54                                                                     0.048363, PositionAngleType.MEAN,
55                                                                     FramesFactory.getEME2000(),
56                                                                     AbsoluteDate.J2000_EPOCH,
57                                                                     Constants.EIGEN5C_EARTH_MU));
58          Assertions.assertSame(Action.CONTINUE, new StopOnIncreasing().eventOccurred(s, null, false));
59      }
60  
61  }
62