public void GetEnumerator_IfFilesChangeDuringEnumeration_ThenTheyAreYielded()
{
using (var cts = new CancellationTokenSource(5000))
{
AutoResetEvent collectionCreated = new AutoResetEvent(false);
var tasks = new Task[]
{
new Task( () =>
{
var collection = new ChangedFileCollection(cts.Token, _directory);
collectionCreated.Set();
var results = collection.ToArray();
Assert.IsTrue(results.SequenceEqual(_addedFiles));
}),
new Task( () =>
{
collectionCreated.WaitOne();
Thread.Sleep(500);
CreateFiles(_addedFiles);
})
};
tasks[0].Start();
tasks[1].Start();
Task.WaitAll(tasks);
}
}
public void GetEnumerator_IfFilesPresentOnConstruction_ThenTheyAreYielded()
{
CreateFiles(_initialFiles);
using (var cts = new CancellationTokenSource(1000))
{
var results = new ChangedFileCollection(cts.Token, _directory);
Assert.IsTrue(results.SequenceEqual(_initialFiles));
}
}
public void GetEnumerator_IfNoFilesEver_ThenYieldsNothing()
{
using (var cts = new CancellationTokenSource(500))
{
var results = new ChangedFileCollection(cts.Token, _directory);
Assert.AreEqual(0, results.Count());
}
}
