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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.fraction;
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 BigFractionFieldTest {
34  
35      @Test
36      public void testZero() {
37          Assert.assertEquals(BigFraction.ZERO, BigFractionField.getInstance().getZero());
38      }
39  
40      @Test
41      public void testOne() {
42          Assert.assertEquals(BigFraction.ONE, BigFractionField.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              for (int j = 1; j < 100; ++j) {
51                  map.put(new BigFraction(i, j).getField(), 0);
52              }
53          }
54          // there should be only one field for all fractions
55          Assert.assertEquals(1, map.size());
56          Assert.assertTrue(BigFractionField.getInstance().equals(map.entrySet().iterator().next().getKey()));
57          Assert.assertFalse(BigFractionField.getInstance().equals(FractionField.getInstance()));
58      }
59  
60      @Test
61      public void testRunTImeClass() {
62          Assert.assertEquals(BigFraction.class, BigFractionField.getInstance().getRuntimeClass());
63      }
64  
65      @Test
66      public void testSerial() {
67          // deserializing the singleton should give the singleton itself back
68          BigFractionField field = BigFractionField.getInstance();
69          Assert.assertTrue(field == UnitTestUtils.serializeAndRecover(field));
70      }
71  
72  }