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ShellSort_Tests.cs
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ShellSort_Tests.cs
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using System;
using System.Linq;
using Advanced.Algorithms.Sorting;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace Advanced.Algorithms.Tests.Sorting
{
[TestClass]
public class ShellSortTests
{
private static readonly int[] TestArray =
{ 12, 7, 9, 8, 3, 10, 2, 1, 5, 11, 4, 6, 0 };
[TestMethod]
public void ShellSort_Ascending_Smoke_Test()
{
var result = ShellSort<int>.Sort(TestArray);
for (var i = 0; i < TestArray.Length; i++) Assert.AreEqual(i, result[i]);
}
[TestMethod]
public void ShellSort_Descending_Smoke_Test()
{
var result = ShellSort<int>.Sort(TestArray, SortDirection.Descending);
for (var i = 0; i < TestArray.Length; i++) Assert.AreEqual(TestArray.Length - i - 1, result[i]);
}
[TestMethod]
public void ShellSort_Ascending_Stress_Test()
{
var rnd = new Random();
var nodeCount = 1000;
var randomNumbers = Enumerable.Range(1, nodeCount)
.OrderBy(x => rnd.Next())
.ToList();
var result = ShellSort<int>.Sort(randomNumbers.ToArray());
for (var i = 1; i <= nodeCount; i++) Assert.AreEqual(i, result[i - 1]);
}
[TestMethod]
public void ShellSort_Descending_Stress_Test()
{
var rnd = new Random();
var nodeCount = 1000;
var randomNumbers = Enumerable.Range(1, nodeCount)
.OrderBy(x => rnd.Next())
.ToList();
var result = ShellSort<int>.Sort(randomNumbers.ToArray(), SortDirection.Descending);
for (var i = 0; i < nodeCount; i++) Assert.AreEqual(randomNumbers.Count - i, result[i]);
}
}
}