public void GivenFileSystemEventWatcherShouldExecuteCallback()
{
var changedFiles = new List <string>();
var config = new FileSystemEventConfiguration(Path.GetTempPath(), $"*.{_tempFileExtension}");
using (var cts = new CancellationTokenSource())
using (var watcher = new Watcher(InternalChanger, config, cts.Token))
{
watcher.Watch();
var tempFile = CreateTempFile();
Thread.Sleep(2000);
TryDeleteFile(tempFile);
cts.Cancel();
Assert.Contains(changedFiles, c => c == tempFile);
}
void InternalChanger(FileSystemEventArgs fse)
{
lock (changedFiles)
{
changedFiles.Add(fse.FullPath);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Watcher"/> class.
/// </summary>
/// <param name="callback">
/// Callback to execute on new file system event
/// </param>
/// <param name="configuration"> Initial configuration object </param>
/// <param name="cancellationToken"> Cancellation token to signal to stop watching </param>
/// <param name="logger"> Logger to use </param>
public Watcher(Action <FileSystemEventArgs> callback, FileSystemEventConfiguration configuration,
CancellationToken cancellationToken, ILogger <Watcher> logger = null)
{
if (cancellationToken == default)
{
throw new ArgumentNullException(nameof(cancellationToken));
}
_callback = callback;
_cancellationToken = cancellationToken;
_configuration = configuration;
_logger = logger ?? NullLogger <Watcher> .Instance;
Initialize();
}
/// <summary>
/// Initializes a new instance of <see cref="FileSystemEventCollection"/>
/// </summary>
/// <param name="configuration"> Configuration to use </param>
/// <param name="cancellationToken"> Cancellation token to signal to watcher to stop </param>
/// <param name="logger"> Logger to use </param>
public FileSystemEventCollection(FileSystemEventConfiguration configuration, CancellationToken cancellationToken,
ILogger <FileSystemEventCollection> logger = null)
{
if (cancellationToken == default)
{
throw new ArgumentNullException(nameof(cancellationToken));
}
if (configuration is null)
{
throw new ArgumentNullException(nameof(configuration));
}
_configuration = configuration;
_cancellationToken = cancellationToken;
_logger = logger ?? NullLogger <FileSystemEventCollection> .Instance;
}
/// <summary>
/// Initializes a new instance of the <see cref="Watcher"/> class.
/// </summary>
/// <param name="configuration"> Initial configuration object </param>
/// <param name="cancellationToken"> Cancellation token to signal to stop watching </param>
/// <param name="logger"> Logger to use </param>
public Watcher(FileSystemEventConfiguration configuration, CancellationToken cancellationToken, ILogger <Watcher> logger = null)
: this(null, configuration, cancellationToken, logger)
{
}
