cefbc78868
git-svn-id: file:///srv/devel/repo-conversion/nusu@11 d2e56fa2-650e-0410-a79f-9358c0239efd
79 lines
2.6 KiB
C#
79 lines
2.6 KiB
C#
using System;
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using System.Collections.Generic;
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#if UNITTEST
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using NUnit.Framework;
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namespace Nuclex.Support.Collections {
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/// <summary>Unit Test for the priority queue class</summary>
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[TestFixture]
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public class PriorityQueueTest {
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/// <summary>Comparer for two floating point values</summary>
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private class FloatComparer : IComparer<float> {
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/// <summary>The default instance of this comparer</summary>
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public static readonly FloatComparer Default = new FloatComparer();
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/// <summary>Compares two floating points against each other</summary>
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/// <param name="left">First float to compare</param>
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/// <param name="right">Second float to compare</param>
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/// <returns>The relationship of the two floats to each other</returns>
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public int Compare(float left, float right) {
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return Math.Sign(left - right);
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}
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}
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/// <summary>Tests to ensure the count property is properly updated</summary>
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[Test]
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public void TestCount() {
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PriorityQueue<float> testQueue = new PriorityQueue<float>(FloatComparer.Default);
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Assert.AreEqual(0, testQueue.Count);
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testQueue.Enqueue(12.34f);
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Assert.AreEqual(1, testQueue.Count);
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testQueue.Enqueue(56.78f);
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Assert.AreEqual(2, testQueue.Count);
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testQueue.Dequeue();
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Assert.AreEqual(1, testQueue.Count);
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testQueue.Enqueue(9.0f);
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Assert.AreEqual(2, testQueue.Count);
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testQueue.Clear();
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Assert.AreEqual(0, testQueue.Count);
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}
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/// <summary>Tests to ensure that the priority collection actually sorts items</summary>
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[Test]
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public void TestOrdering() {
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PriorityQueue<float> testQueue = new PriorityQueue<float>(FloatComparer.Default);
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testQueue.Enqueue(1.0f);
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testQueue.Enqueue(9.0f);
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testQueue.Enqueue(2.0f);
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testQueue.Enqueue(8.0f);
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testQueue.Enqueue(3.0f);
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testQueue.Enqueue(7.0f);
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testQueue.Enqueue(4.0f);
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testQueue.Enqueue(6.0f);
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testQueue.Enqueue(5.0f);
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Assert.AreEqual(9.0f, testQueue.Dequeue());
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Assert.AreEqual(8.0f, testQueue.Dequeue());
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Assert.AreEqual(7.0f, testQueue.Dequeue());
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Assert.AreEqual(6.0f, testQueue.Dequeue());
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Assert.AreEqual(5.0f, testQueue.Dequeue());
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Assert.AreEqual(4.0f, testQueue.Dequeue());
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Assert.AreEqual(3.0f, testQueue.Dequeue());
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Assert.AreEqual(2.0f, testQueue.Dequeue());
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Assert.AreEqual(1.0f, testQueue.Dequeue());
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}
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}
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} // namespace Nuclex.Support.Collections
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#endif // UNITTEST
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