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FileHelperTests.cs
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FileHelperTests.cs
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
namespace Microsoft.TestPlatform.PerformanceTests
{
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using Microsoft.TestPlatform.TestUtilities.PerfInstrumentation;
using Microsoft.VisualStudio.TestPlatform.Utilities.Helpers;
using Microsoft.VisualStudio.TestTools.UnitTesting;
[TestClass]
public class FileHelperTests : PerformanceTestBase
{
[TestMethod]
public void EnumerateFilesPerfTests()
{
var fileHelper = new FileHelper();
var stopwatch = new Stopwatch();
var adapterPath = Directory.GetCurrentDirectory();
var patterns = new string[]
{
".*CoreUtilities.dll",
".*CommunicationUtilities.dll",
".*CrossPlatEngine.dll",
".*TestUtilities.dll"
};
stopwatch.Start();
var extensionAssemblies =
new List<string>(
fileHelper.EnumerateFiles(
adapterPath,
patterns[0],
SearchOption.AllDirectories));
extensionAssemblies.AddRange(
fileHelper.EnumerateFiles(
adapterPath,
patterns[1],
SearchOption.AllDirectories));
extensionAssemblies.AddRange(
fileHelper.EnumerateFiles(
adapterPath,
patterns[2],
SearchOption.AllDirectories));
extensionAssemblies.AddRange(
fileHelper.EnumerateFiles(
adapterPath,
patterns[3],
SearchOption.AllDirectories));
stopwatch.Stop();
var timeForOldApi = stopwatch.ElapsedMilliseconds;
stopwatch.Restart();
var extensionAssembliesNew =
new List<string>(fileHelper.EnumerateFiles(adapterPath, patterns, SearchOption.AllDirectories));
stopwatch.Stop();
var timeForNewApi = stopwatch.ElapsedMilliseconds;
Assert.AreEqual(extensionAssemblies.Count, extensionAssembliesNew.Count);
Assert.IsTrue(timeForNewApi < timeForOldApi);
}
}
}