53 lines
1.6 KiB
C#
53 lines
1.6 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.IO;
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using System.Threading;
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namespace Microsoft.DotNet.Watcher.FunctionalTests
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{
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public class WaitForFileToChange : IDisposable
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{
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private readonly FileSystemWatcher _watcher;
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private readonly string _expectedFile;
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private readonly ManualResetEvent _changed = new ManualResetEvent(false);
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public WaitForFileToChange(string file)
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{
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_watcher = new FileSystemWatcher(Path.GetDirectoryName(file), "*" + Path.GetExtension(file));
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_expectedFile = file;
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_watcher.Changed += WatcherEvent;
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_watcher.Created += WatcherEvent;
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_watcher.EnableRaisingEvents = true;
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}
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private void WatcherEvent(object sender, FileSystemEventArgs e)
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{
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if (e.FullPath.Equals(_expectedFile, StringComparison.Ordinal))
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{
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Waiters.WaitForFileToBeReadable(_expectedFile, TimeSpan.FromSeconds(10));
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_changed.Set();
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}
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}
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public void Wait(TimeSpan timeout, bool expectedToChange, string errorMessage)
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{
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var changed = _changed.WaitOne(timeout);
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if (changed != expectedToChange)
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{
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throw new Exception(errorMessage);
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}
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}
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public void Dispose()
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{
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_watcher.Dispose();
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_changed.Dispose();
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}
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}
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}
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