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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF 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    *      https://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  
18  /*
19   * This is not the original file distributed by the Apache Software Foundation
20   * It has been modified by the Hipparchus project
21   */
22  
23  package org.hipparchus.geometry.euclidean.threed;
24  
25  import java.lang.reflect.Field;
26  
27  import org.hipparchus.exception.MathIllegalStateException;
28  import org.hipparchus.geometry.LocalizedGeometryFormats;
29  import org.junit.Assert;
30  import org.junit.Test;
31  
32  
33  public class RotationOrderTest {
34  
35    @Test
36    public void testName() {
37  
38      RotationOrder[] orders = {
39        RotationOrder.XYZ, RotationOrder.XZY, RotationOrder.YXZ,
40        RotationOrder.YZX, RotationOrder.ZXY, RotationOrder.ZYX,
41        RotationOrder.XYX, RotationOrder.XZX, RotationOrder.YXY,
42        RotationOrder.YZY, RotationOrder.ZXZ, RotationOrder.ZYZ
43      };
44  
45      for (int i = 0; i < orders.length; ++i) {
46        Assert.assertEquals(getFieldName(orders[i]), orders[i].toString());
47      }
48  
49    }
50  
51    @Test
52    public void testIssue72() {
53        for (RotationOrder order : RotationOrder.values()) {
54            RotationOrder buildOrder = RotationOrder.getRotationOrder(order.toString());
55            Assert.assertEquals(0.0, Vector3D.distance1(order.getA1(), buildOrder.getA1()), Double.MIN_VALUE);
56            Assert.assertEquals(0.0, Vector3D.distance1(order.getA2(), buildOrder.getA2()), Double.MIN_VALUE);
57            Assert.assertEquals(0.0, Vector3D.distance1(order.getA3(), buildOrder.getA3()), Double.MIN_VALUE);
58        }
59    }
60  
61    @Test
62    public void testIssue72InvalidName() {
63        String wrongName = "BCE";
64        try {
65            RotationOrder.getRotationOrder(wrongName);
66        } catch (MathIllegalStateException mise) {
67            Assert.assertEquals(LocalizedGeometryFormats.INVALID_ROTATION_ORDER_NAME, mise.getSpecifier());
68            Assert.assertEquals(wrongName, mise.getParts()[0]);
69        }
70    }
71  
72  
73    private String getFieldName(RotationOrder order) {
74      try {
75        Field[] fields = RotationOrder.class.getFields();
76        for (int i = 0; i < fields.length; ++i) {
77          if (fields[i].get(null) == order) {
78            return fields[i].getName();
79          }
80        }
81      } catch (IllegalAccessException iae) {
82        // ignored
83      }
84      return "unknown";
85    }
86  
87  }