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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  package org.hipparchus.util;
23  
24  
25  import java.util.HashMap;
26  import java.util.Map;
27  
28  import org.hipparchus.Field;
29  import org.hipparchus.UnitTestUtils;
30  import org.junit.Assert;
31  import org.junit.Test;
32  
33  public class BigRealFieldTest {
34  
35      @Test
36      public void testZero() {
37          Assert.assertEquals(BigReal.ZERO, BigRealField.getInstance().getZero());
38      }
39  
40      @Test
41      public void testOne() {
42          Assert.assertEquals(BigReal.ONE, BigRealField.getInstance().getOne());
43      }
44  
45      @SuppressWarnings("unlikely-arg-type")
46      @Test
47      public void testMap() {
48          Map<Field<?>, Integer> map = new HashMap<>();
49          for (int i = 1; i < 100; ++i) {
50              map.put(new BigReal(i).getField(), 0);
51          }
52          // there should be only one field for all values
53          Assert.assertEquals(1, map.size());
54          Assert.assertTrue(BigRealField.getInstance().equals(map.entrySet().iterator().next().getKey()));
55          Assert.assertFalse(BigRealField.getInstance().equals(Binary64Field.getInstance()));
56      }
57  
58      @Test
59      public void testRunTImeClass() {
60          Assert.assertEquals(BigReal.class, BigRealField.getInstance().getRuntimeClass());
61      }
62  
63      @Test
64      public void testSerial() {
65          // deserializing the singleton should give the singleton itself back
66          BigRealField field = BigRealField.getInstance();
67          Assert.assertTrue(field == UnitTestUtils.serializeAndRecover(field));
68      }
69  
70  }