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source: stable/HeuristicLab.Tests/HeuristicLab.Encodings.RealVectorEncoding-3.3/BlendAlphaCrossoverTest.cs @ 11552

Last change on this file since 11552 was 11170, checked in by ascheibe, 10 years ago

#2115 updated copyright year in stable branch

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[3742]1#region License Information
2/* HeuristicLab
[11170]3 * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[3742]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
[4068]22using HeuristicLab.Core;
23using HeuristicLab.Data;
[6891]24using HeuristicLab.Tests;
[2914]25using Microsoft.VisualStudio.TestTools.UnitTesting;
26
[9885]27namespace HeuristicLab.Encodings.RealVectorEncoding.Tests {
[2914]28  /// <summary>
29  ///This is a test class for BlendAlphaCrossoverTest and is intended
30  ///to contain all BlendAlphaCrossoverTest Unit Tests
31  ///</summary>
32  [TestClass()]
33  public class BlendAlphaCrossoverTest {
34    /// <summary>
35    ///A test for Cross
36    ///</summary>
37    [TestMethod()]
[9885]38    [TestCategory("Encodings.RealVector")]
39    [TestProperty("Time", "short")]
[2914]40    public void BlendAlphaCrossoverCrossTest() {
41      BlendAlphaCrossover_Accessor target = new BlendAlphaCrossover_Accessor(new PrivateObject(typeof(BlendAlphaCrossover)));
[3060]42      ItemArray<RealVector> parents;
[2914]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();
[3060]47      parents = new ItemArray<RealVector>(new RealVector[] { new RealVector(5), new RealVector(6), new RealVector(4) });
[2914]48      exceptionFired = false;
49      try {
[3060]50        RealVector actual;
[2914]51        actual = target.Cross(random, parents);
[9885]52      } catch (System.ArgumentException) {
[2914]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();
[3060]58      parents = new ItemArray<RealVector>(new RealVector[] { new RealVector(4) });
[2914]59      exceptionFired = false;
60      try {
[3060]61        RealVector actual;
[2914]62        actual = target.Cross(random, parents);
[9885]63      } catch (System.ArgumentException) {
[2914]64        exceptionFired = true;
65      }
66      Assert.IsTrue(exceptionFired);
67    }
68
69    /// <summary>
70    ///A test for Apply
71    ///</summary>
72    [TestMethod()]
[9885]73    [TestCategory("Encodings.RealVector")]
74    [TestProperty("Time", "short")]
[2914]75    public void BlendAlphaCrossoverApplyTest() {
76      TestRandom random = new TestRandom();
[3060]77      RealVector parent1, parent2, expected, actual;
[3048]78      DoubleValue alpha;
[2914]79      bool exceptionFired;
80      // The following test is not based on published examples
81      random.Reset();
82      random.DoubleNumbers = new double[] { 0.5, 0.5, 0.5, 0.5, 0.5 };
[3048]83      alpha = new DoubleValue(0.5);
[3060]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[] { 0.3, 0.15, 0.3, 0.35, 0.45 });
[2914]87      actual = BlendAlphaCrossover.Apply(random, parent1, parent2, alpha);
[3061]88      Assert.IsTrue(Auxiliary.RealVectorIsAlmostEqualByPosition(actual, expected));
[2914]89      // The following test is not based on published examples
90      random.Reset();
91      random.DoubleNumbers = new double[] { 0.25, 0.75, 0.25, 0.75, 0.25 };
[3048]92      alpha = new DoubleValue(0.25);
[3060]93      parent1 = new RealVector(new double[] { 0.2, 0.2, 0.3, 0.5, 0.1 });
94      parent2 = new RealVector(new double[] { 0.4, 0.1, 0.3, 0.2, 0.8 });
95      expected = new RealVector(new double[] { 0.225, 0.1875, 0.3, 0.4625, 0.1875 });
[2914]96      actual = BlendAlphaCrossover.Apply(random, parent1, parent2, alpha);
[3061]97      Assert.IsTrue(Auxiliary.RealVectorIsAlmostEqualByPosition(actual, expected));
[2914]98      // The following test is not based on published examples
99      random.Reset();
100      random.DoubleNumbers = new double[] { 0.25, 0.75, 0.25, 0.75, 0.25 };
[3048]101      alpha = new DoubleValue(-0.25); // negative values for alpha are not allowed
[3060]102      parent1 = new RealVector(new double[] { 0.2, 0.2, 0.3, 0.5, 0.1 });
103      parent2 = new RealVector(new double[] { 0.4, 0.1, 0.3, 0.2, 0.8 });
104      expected = new RealVector(new double[] { 0.225, 0.1875, 0.3, 0.4625, 0.1875 });
[2914]105      exceptionFired = false;
106      try {
107        actual = BlendAlphaCrossover.Apply(random, parent1, parent2, alpha);
[9885]108      } catch (System.ArgumentException) {
[2914]109        exceptionFired = true;
110      }
111      Assert.IsTrue(exceptionFired);
112      // The following test is not based on published examples
113      random.Reset();
114      random.DoubleNumbers = new double[] { 0.25, 0.75, 0.25, 0.75, 0.25, .75 };
[3048]115      alpha = new DoubleValue(0.25);
[3060]116      parent1 = new RealVector(new double[] { 0.2, 0.2, 0.3, 0.5, 0.1, 0.9 }); // this parent is longer
117      parent2 = new RealVector(new double[] { 0.4, 0.1, 0.3, 0.2, 0.8 });
118      expected = new RealVector(new double[] { 0.225, 0.1875, 0.3, 0.4625, 0.1875 });
[2914]119      exceptionFired = false;
120      try {
121        actual = BlendAlphaCrossover.Apply(random, parent1, parent2, alpha);
[9885]122      } catch (System.ArgumentException) {
[2914]123        exceptionFired = true;
124      }
125      Assert.IsTrue(exceptionFired);
126    }
127  }
128}
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