Changeset 15218 for stable/HeuristicLab.Tests/HeuristicLab.IGraph/IGraphWrappersVectorTest.cs

Timestamp:

07/12/17 21:04:37 (7 years ago)

Author:

abeham

Message:

#2803: merged revisions 15191, 15192 to stable

Location:

stable

Files:

• . (modified) (1 prop)
• HeuristicLab.Tests (modified) (1 prop)
• HeuristicLab.Tests/HeuristicLab.IGraph/IGraphWrappersVectorTest.cs (modified) (7 diffs)

stable/HeuristicLab.Tests/HeuristicLab.IGraph/IGraphWrappersVectorTest.cs

@@ -20 +20 @@
 #endregion
 
+using System;
+using System.Collections.Generic;
 using System.Linq;
+using HeuristicLab.Encodings.RealVectorEncoding;
 using HeuristicLab.IGraph.Wrappers;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
@@ -32 +35 @@
     [TestProperty("Time", "short")]
     public void IGraphWrappersVectorConstructionAndFinalizationTest() {
-      var vector = new Vector(7);
-      Assert.AreEqual(7, vector.Length);
-      Assert.AreEqual(0, vector[0]);
-      vector[0] = 4;
-      var other = new Vector(vector);
-      Assert.AreEqual(7, other.Length);
-      Assert.AreEqual(4, other[0]);
-
+      using (var vector = new Vector(7)) {
+        Assert.AreEqual(7, vector.Length);
+        Assert.AreEqual(0, vector[0]);
+        vector[0] = 4;
+        using (var other = new Vector(vector)) {
+          Assert.AreEqual(7, other.Length);
+          Assert.AreEqual(4, other[0]);
+        }
+      }
       var myvec = new double[] { 1, 2, 3 };
-      vector = new Vector(myvec);
-      Assert.AreEqual(3, vector.Length);
-      Assert.AreEqual(myvec[0], vector[0]);
-      Assert.AreEqual(myvec[1], vector[1]);
-      Assert.AreEqual(myvec[2], vector[2]);
+      using (var vector = new Vector(myvec)) {
+        Assert.AreEqual(3, vector.Length);
+        Assert.AreEqual(myvec[0], vector[0]);
+        Assert.AreEqual(myvec[1], vector[1]);
+        Assert.AreEqual(myvec[2], vector[2]);
+      }
     }
 
@@ -53 +58 @@
     [TestProperty("Time", "short")]
     public void IGraphWrappersVectorGetSetTest() {
-      var vector = new Vector(5);
-      vector[0] = vector[1] = 4;
-      vector[2] = 3;
-      vector[3] = 1.5;
-      vector[4] = -0.5;
-      Assert.AreEqual(4, vector[0]);
-      Assert.AreEqual(4, vector[1]);
-      Assert.AreEqual(3, vector[2]);
-      Assert.AreEqual(1.5, vector[3]);
-      Assert.AreEqual(-0.5, vector[4]);
+      using (var vector = new Vector(5)) {
+        vector[0] = vector[1] = 4;
+        vector[2] = 3;
+        vector[3] = 1.5;
+        vector[4] = -0.5;
+        Assert.AreEqual(4, vector[0]);
+        Assert.AreEqual(4, vector[1]);
+        Assert.AreEqual(3, vector[2]);
+        Assert.AreEqual(1.5, vector[3]);
+        Assert.AreEqual(-0.5, vector[4]);
 
-      var netmat = vector.ToArray();
-      Assert.AreEqual(5, netmat.Length);
-      for (var i = 0; i < netmat.Length; i++)
-        Assert.AreEqual(vector[i], netmat[i]);
+        var netmat = vector.ToArray();
+        Assert.AreEqual(5, netmat.Length);
+        for (var i = 0; i < netmat.Length; i++)
+          Assert.AreEqual(vector[i], netmat[i]);
+      }
     }
 
@@ -75 +81 @@
     [TestProperty("Time", "short")]
     public void IGraphWrappersVectorFillTest() {
-      var vector = new Vector(5);
-      vector.Fill(2.3);
-      Assert.IsTrue(new[] { 2.3, 2.3, 2.3, 2.3, 2.3 }.SequenceEqual(vector.ToArray()));
+      using (var vector = new Vector(5)) {
+        vector.Fill(2.3);
+        Assert.IsTrue(new[] { 2.3, 2.3, 2.3, 2.3, 2.3 }.SequenceEqual(vector.ToArray()));
+      }
     }
 
@@ -85 +92 @@
     [TestProperty("Time", "short")]
     public void IGraphWrappersVectorReverseTest() {
-      var vector = new Vector(5);
-      vector[0] = vector[1] = 4;
-      vector[2] = 3;
-      vector[3] = 1.5;
-      vector[4] = -0.5;
-      vector.Reverse();
-      Assert.IsTrue(new[] { -0.5, 1.5, 3, 4, 4 }.SequenceEqual(vector.ToArray()));
+      using (var vector = new Vector(5)) {
+        vector[0] = vector[1] = 4;
+        vector[2] = 3;
+        vector[3] = 1.5;
+        vector[4] = -0.5;
+        vector.Reverse();
+        Assert.IsTrue(new[] { -0.5, 1.5, 3, 4, 4 }.SequenceEqual(vector.ToArray()));
+      }
     }
 
@@ -99 +107 @@
     [TestProperty("Time", "short")]
     public void IGraphWrappersVectorShuffleTest() {
-      var vector = new Vector(5);
-      vector[0] = vector[1] = 4;
-      vector[2] = 3;
-      vector[3] = 1.5;
-      vector[4] = -0.5;
-      vector.Shuffle();
-      Assert.IsFalse(new[] { -0.5, 1.5, 3, 4, 4 }.SequenceEqual(vector.ToArray()));
-      Assert.IsFalse(new[] { 4, 4, 3, 1.5, -0.5 }.SequenceEqual(vector.ToArray()));
+      var different = new HashSet<RealVector>(new RealVectorEqualityComparer());
+      for (var i = 0; i < 100; i++) {
+        using (var vector = new Vector(5)) {
+          vector[0] = vector[1] = 4;
+          vector[2] = 3;
+          vector[3] = 1.5;
+          vector[4] = -0.5;
+          vector.Shuffle();
+          var result = vector.ToArray();
+          different.Add(new RealVector(result));
+          Assert.AreEqual(2, result.Count(x => x == 4));
+          Assert.AreEqual(1, result.Count(x => x == 3));
+          Assert.AreEqual(1, result.Count(x => x == 1.5));
+          Assert.AreEqual(1, result.Count(x => x == -0.5));
+        }
+      }
+      // There should be reasonable low probability that all 100 shuffles result in exactly the same vector
+      Assert.IsTrue(different.Count > 1);
+      Assert.IsTrue(different.Count <= 60); // there are a total of 60 different shuffles 5! / 2!
+      Console.WriteLine("Shuffle produced " + different.Count + " unique vectors");
     }
 
@@ -114 +134 @@
     [TestProperty("Time", "short")]
     public void IGraphWrappersVectorScaleTest() {
-      var vector = new Vector(5);
-      vector[0] = vector[1] = 4;
-      vector[2] = 3;
-      vector[3] = 1.5;
-      vector[4] = -0.5;
-      vector.Scale(2);
-      Assert.IsTrue(new double[] { 8, 8, 6, 3, -1 }.SequenceEqual(vector.ToArray()));
+      using (var vector = new Vector(5)) {
+        vector[0] = vector[1] = 4;
+        vector[2] = 3;
+        vector[3] = 1.5;
+        vector[4] = -0.5;
+        vector.Scale(2);
+        Assert.IsTrue(new double[] { 8, 8, 6, 3, -1 }.SequenceEqual(vector.ToArray()));
+      }
     }
   }