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source: trunk/sources/HeuristicLab.Tests/HeuristicLab.Encodings.RealVectorEncoding-3.3/SimulatedBinaryCrossoverTest.cs @ 14353

Last change on this file since 14353 was 14353, checked in by bburlacu, 7 years ago

#2685: Add correction step for values miscalculated due to cyclical symbol dependencies in the grammar. Updated unit test.

File size: 4.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Core;
23using HeuristicLab.Data;
24using HeuristicLab.Tests;
25using Microsoft.VisualStudio.TestTools.UnitTesting;
26
27namespace HeuristicLab.Encodings.RealVectorEncoding.Tests {
28  /// <summary>
29  ///This is a test class for SimulatedBinaryCrossoverTest and is intended
30  ///to contain all SimulatedBinaryCrossoverTest Unit Tests
31  ///</summary>
32  [TestClass()]
33  public class SimulatedBinaryCrossoverTest {
34    /// <summary>
35    ///A test for Cross
36    ///</summary>
37    [TestMethod()]
38    [TestCategory("Encodings.RealVector")]
39    [TestProperty("Time", "short")]
40    public void SimulatedBinaryCrossoverCrossTest() {
41      var privateObject = new PrivateObject(typeof(SimulatedBinaryCrossover));
42      ItemArray<RealVector> parents;
43      TestRandom random = new TestRandom();
44      bool exceptionFired;
45      // The following test checks if there is an exception when there are more than 2 parents
46      random.Reset();
47      parents = new ItemArray<RealVector>(new RealVector[] { new RealVector(5), new RealVector(6), new RealVector(4) });
48      exceptionFired = false;
49      try {
50        RealVector actual = (RealVector)privateObject.Invoke("Cross", random, parents);
51      }
52      catch (System.ArgumentException) {
53        exceptionFired = true;
54      }
55      Assert.IsTrue(exceptionFired);
56      // The following test checks if there is an exception when there are less than 2 parents
57      random.Reset();
58      parents = new ItemArray<RealVector>(new RealVector[] { new RealVector(4) });
59      exceptionFired = false;
60      try {
61        RealVector actual = (RealVector)privateObject.Invoke("Cross", random, parents);
62      }
63      catch (System.ArgumentException) {
64        exceptionFired = true;
65      }
66      Assert.IsTrue(exceptionFired);
67    }
68
69    /// <summary>
70    ///A test for Apply
71    ///</summary>
72    [TestMethod()]
73    [TestCategory("Encodings.RealVector")]
74    [TestProperty("Time", "short")]
75    public void SimulatedBinaryCrossoverApplyTest() {
76      TestRandom random = new TestRandom();
77      RealVector parent1, parent2, expected, actual;
78      DoubleValue contiguity;
79      bool exceptionFired;
80      // The following test is not based on published examples
81      random.Reset();
82      random.DoubleNumbers = new double[] { 0.3, 0.9, 0.7, 0.2, 0.8, 0.1, 0.2, 0.3, 0.4, 0.8, 0.7 };
83      contiguity = new DoubleValue(0.3);
84      parent1 = new RealVector(new double[] { 0.2, 0.2, 0.3, 0.5, 0.1 });
85      parent2 = new RealVector(new double[] { 0.4, 0.1, 0.3, 0.2, 0.8 });
86      expected = new RealVector(new double[] { 0.644880972204315, 0.0488239539275703, 0.3, 0.5, 0.1 });
87      actual = SimulatedBinaryCrossover.Apply(random, parent1, parent2, contiguity);
88      Assert.IsTrue(Auxiliary.RealVectorIsAlmostEqualByPosition(actual, expected));
89      // The following test is not based on published examples
90      random.Reset();
91      random.DoubleNumbers = new double[] { 0.3, 0.9, 0.7, 0.2, 0.8, 0.1, 0.2, 0.3, 0.4, 0.8, 0.7 };
92      contiguity = new DoubleValue(0.3);
93      parent1 = new RealVector(new double[] { 0.2, 0.2, 0.3, 0.5, 0.1, 0.9 }); // this parent is longer
94      parent2 = new RealVector(new double[] { 0.4, 0.1, 0.3, 0.2, 0.8 });
95      exceptionFired = false;
96      try {
97        actual = SimulatedBinaryCrossover.Apply(random, parent1, parent2, contiguity);
98      }
99      catch (System.ArgumentException) {
100        exceptionFired = true;
101      }
102      Assert.IsTrue(exceptionFired);
103      // The following test is not based on published examples
104      random.Reset();
105      random.DoubleNumbers = new double[] { 0.3, 0.9, 0.7, 0.2, 0.8, 0.1, 0.2, 0.3, 0.4, 0.8, 0.7 };
106      contiguity = new DoubleValue(-0.3);  //  contiguity < 0
107      parent1 = new RealVector(new double[] { 0.2, 0.2, 0.3, 0.5, 0.1 });
108      parent2 = new RealVector(new double[] { 0.4, 0.1, 0.3, 0.2, 0.8 });
109      exceptionFired = false;
110      try {
111        actual = SimulatedBinaryCrossover.Apply(random, parent1, parent2, contiguity);
112      }
113      catch (System.ArgumentException) {
114        exceptionFired = true;
115      }
116      Assert.IsTrue(exceptionFired);
117    }
118  }
119}
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