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
15   * limitations under the License.
16   */
17  package org.orekit.time;
18  
19  import org.junit.jupiter.api.Assertions;
20  import org.junit.jupiter.api.BeforeEach;
21  import org.junit.jupiter.api.Test;
22  import org.orekit.Utils;
23  
24  public class GLONASSDateTest {
25  
26      private TimeScale glo;
27  
28      @BeforeEach
29      public void setUp() {
30          Utils.setDataRoot("regular-data");
31          glo = TimeScalesFactory.getGLONASS();
32      }
33  
34      @Test
35      public void testFromNaAndN4() {
36          GLONASSDate date = new GLONASSDate(251, 5, 7200.0);
37          AbsoluteDate ref  = new AbsoluteDate(new DateComponents(2012, 9, 7),
38                                               new TimeComponents(2, 0, 0.0),
39                                               glo);
40          Assertions.assertEquals(251, date.getDayNumber());
41          Assertions.assertEquals(5,   date.getIntervalNumber());
42          Assertions.assertEquals(2456177.5, date.getJD0(), 1.0e-16);
43          Assertions.assertEquals(29191.442830, date.getGMST(), 3.0e-3);
44          Assertions.assertEquals(0,   date.getDate().durationFrom(ref), 1.0e-15);
45      }
46  
47      @Test
48      public void testFromAbsoluteDate() {
49          GLONASSDate date = new GLONASSDate(new AbsoluteDate(new DateComponents(2012, 9, 7),
50                                                              new TimeComponents(2, 0, 0.0),
51                                                              glo));
52          Assertions.assertEquals(251,    date.getDayNumber());
53          Assertions.assertEquals(5,      date.getIntervalNumber());
54          Assertions.assertEquals(2456177.5, date.getJD0(), 1.0e-16);
55          Assertions.assertEquals(29191.442830, date.getGMST(), 3.0e-3);
56          Assertions.assertEquals(7200.0, date.getSecInDay(), 1.0e-15);
57      }
58  
59  }