[2854] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[11171] | 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2854] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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[2906] | 22 | using HeuristicLab.Core;
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[6891] | 23 | using HeuristicLab.Tests;
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[2854] | 24 | using Microsoft.VisualStudio.TestTools.UnitTesting;
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| 25 |
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[9764] | 26 | namespace HeuristicLab.Encodings.PermutationEncoding.Tests {
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[2854] | 27 | /// <summary>
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| 28 | ///This is a test class for PositionBasedCrossover and is intended
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| 29 | ///to contain all PositionBasedCrossover Unit Tests
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| 30 | ///</summary>
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| 31 | [TestClass()]
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| 32 | public class PositionBasedCrossoverTest {
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| 33 | /// <summary>
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| 34 | ///A test for Cross
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| 35 | ///</summary>
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[9767] | 36 | [TestMethod]
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[9777] | 37 | [TestCategory("Encodings.Permutation")]
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| 38 | [TestProperty("Time", "short")]
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[2854] | 39 | public void PositionBasedCrossoverCrossTest() {
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| 40 | TestRandom random = new TestRandom();
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| 41 | PositionBasedCrossover_Accessor target = new PositionBasedCrossover_Accessor(
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| 42 | new PrivateObject(typeof(PositionBasedCrossover)));
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[4068] | 43 |
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[2854] | 44 | // perform a test with more than two parents
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| 45 | random.Reset();
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| 46 | bool exceptionFired = false;
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| 47 | try {
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[3053] | 48 | target.Cross(random, new ItemArray<Permutation>(new Permutation[] {
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[3231] | 49 | new Permutation(PermutationTypes.RelativeUndirected, 4), new Permutation(PermutationTypes.RelativeUndirected, 4), new Permutation(PermutationTypes.RelativeUndirected, 4) }));
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[9777] | 50 | } catch (System.InvalidOperationException) {
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[2854] | 51 | exceptionFired = true;
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| 52 | }
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| 53 | Assert.IsTrue(exceptionFired);
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| 54 | }
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| 55 |
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| 56 | /// <summary>
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| 57 | ///A test for Apply
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| 58 | ///</summary>
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[9767] | 59 | [TestMethod]
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[9777] | 60 | [TestCategory("Encodings.Permutation")]
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| 61 | [TestProperty("Time", "short")]
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[2854] | 62 | public void PositionBasedCrossoverApplyTest() {
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| 63 | TestRandom random = new TestRandom();
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[3053] | 64 | Permutation parent1, parent2, expected, actual;
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[2854] | 65 |
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| 66 | // The following test is based on an example from Larranaga, 1999. Genetic Algorithms for the Traveling Salesman Problem.
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| 67 | random.Reset();
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| 68 | random.IntNumbers = new int[] { 3, 1, 2, 5 };
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[3231] | 69 | parent1 = new Permutation(PermutationTypes.RelativeUndirected, new int[] { 0, 1, 2, 3, 4, 5, 6, 7 });
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[2854] | 70 | Assert.IsTrue(parent1.Validate());
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[3231] | 71 | parent2 = new Permutation(PermutationTypes.RelativeUndirected, new int[] { 1, 3, 5, 7, 6, 4, 2, 0 });
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[2854] | 72 | Assert.IsTrue(parent2.Validate());
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| 73 |
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[3231] | 74 | expected = new Permutation(PermutationTypes.RelativeUndirected, new int[] { 0, 3, 5, 1, 2, 4, 6, 7 });
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[2854] | 75 | Assert.IsTrue(expected.Validate());
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| 76 | actual = PositionBasedCrossover.Apply(random, parent1, parent2);
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| 77 | Assert.IsTrue(actual.Validate());
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| 78 | Assert.IsTrue(Auxiliary.PermutationIsEqualByPosition(expected, actual));
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| 79 |
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| 80 | // perform a test when two permutations are of unequal length
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| 81 | random.Reset();
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| 82 | bool exceptionFired = false;
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| 83 | try {
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[3231] | 84 | PositionBasedCrossover.Apply(random, new Permutation(PermutationTypes.RelativeUndirected, 8), new Permutation(PermutationTypes.RelativeUndirected, 6));
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[9777] | 85 | } catch (System.ArgumentException) {
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[2854] | 86 | exceptionFired = true;
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| 87 | }
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| 88 | Assert.IsTrue(exceptionFired);
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| 89 | }
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| 90 | }
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| 91 | }
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