151 lines
4.8 KiB
C#
151 lines
4.8 KiB
C#
#region Apache License 2.0
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/*
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Nuclex .NET Framework
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Copyright (C) 2002-2024 Markus Ewald / Nuclex Development Labs
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#endregion // Apache License 2.0
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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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internal class PairPriorityQueueTest {
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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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PairPriorityQueue<float, string> testQueue = new PairPriorityQueue<float, string>();
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Assert.AreEqual(0, testQueue.Count);
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testQueue.Enqueue(12.34f, "a");
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Assert.AreEqual(1, testQueue.Count);
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testQueue.Enqueue(56.78f, "b");
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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, "c");
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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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PairPriorityQueue<float, string> testQueue = new PairPriorityQueue<float, string>();
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testQueue.Enqueue(1.0f, "a");
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testQueue.Enqueue(9.0f, "i");
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testQueue.Enqueue(2.0f, "b");
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testQueue.Enqueue(8.0f, "h");
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testQueue.Enqueue(3.0f, "c");
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testQueue.Enqueue(7.0f, "g");
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testQueue.Enqueue(4.0f, "d");
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testQueue.Enqueue(6.0f, "f");
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testQueue.Enqueue(5.0f, "e");
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Assert.AreEqual("i", testQueue.Dequeue().Item);
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Assert.AreEqual("h", testQueue.Dequeue().Item);
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Assert.AreEqual("g", testQueue.Dequeue().Item);
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Assert.AreEqual("f", testQueue.Dequeue().Item);
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Assert.AreEqual("e", testQueue.Dequeue().Item);
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Assert.AreEqual("d", testQueue.Dequeue().Item);
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Assert.AreEqual("c", testQueue.Dequeue().Item);
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Assert.AreEqual("b", testQueue.Dequeue().Item);
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Assert.AreEqual("a", testQueue.Dequeue().Item);
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}
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/// <summary>Tests to ensure that the priority collection's Peek() method works</summary>
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[Test]
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public void TestPeek() {
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PairPriorityQueue<float, string> testQueue = new PairPriorityQueue<float, string>();
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testQueue.Enqueue(1.0f, "a");
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testQueue.Enqueue(2.0f, "b");
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testQueue.Enqueue(0.0f, "c");
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Assert.AreEqual("b", testQueue.Peek().Item);
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}
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/// <summary>Tests whether the priority collection can copy itself into an array</summary>
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[Test]
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public void TestCopyTo() {
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PairPriorityQueue<float, string> testQueue = new PairPriorityQueue<float, string>();
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testQueue.Enqueue(1.0f, "a");
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testQueue.Enqueue(9.0f, "i");
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testQueue.Enqueue(2.0f, "b");
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testQueue.Enqueue(8.0f, "h");
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testQueue.Enqueue(3.0f, "c");
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testQueue.Enqueue(7.0f, "g");
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testQueue.Enqueue(4.0f, "d");
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testQueue.Enqueue(6.0f, "f");
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testQueue.Enqueue(5.0f, "e");
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PriorityItemPair<float, string>[] itemArray = new PriorityItemPair<float, string>[9];
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testQueue.CopyTo(itemArray, 0);
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CollectionAssert.AreEquivalent(testQueue, itemArray);
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}
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/// <summary>
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/// Tests whether the priority collection provides a synchronization root
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/// </summary>
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[Test]
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public void TestSyncRoot() {
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PairPriorityQueue<int, int> testQueue = new PairPriorityQueue<int, int>();
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// If IsSynchronized returns true, SyncRoot is allowed to be null
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if(!testQueue.IsSynchronized) {
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lock(testQueue.SyncRoot) {
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testQueue.Clear();
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}
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}
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}
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/// <summary>
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/// Tests whether the priority collection provides a working type-safe enumerator
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/// </summary>
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[Test]
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public void TestEnumerator() {
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PairPriorityQueue<float, string> testQueue = new PairPriorityQueue<float, string>();
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testQueue.Enqueue(1.0f, "a");
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testQueue.Enqueue(2.0f, "b");
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testQueue.Enqueue(0.0f, "c");
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List<PriorityItemPair<float, string>> testList =
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new List<PriorityItemPair<float,string>>();
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foreach(PriorityItemPair<float, string> entry in testQueue) {
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testList.Add(entry);
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}
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CollectionAssert.AreEquivalent(testQueue, testList);
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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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