public void SearchTaskFailsWithNullActionTest()
{
const Func <string, CancellationToken, IEnumerable <string> > nullAction = null;
IEnumerable <string> inilialItems = new[] { "http://mail.ru" };
try
{
SearchTask
.StartNew(inilialItems, nullAction, CancellationToken.None)
.Wait(CancellationToken.None);
}
catch (AggregateException ex)
{
Assert.AreEqual(1, ex.InnerExceptions.Count);
Assert.IsTrue(ex.InnerExceptions.First() is ArgumentNullException);
}
}
private async Task StartUrlTest(ConcurrentBag <string> outputItems, CancellationToken cancellationToken,
SearchTaskOptions options = null)
{
Assert.IsNotNull(outputItems);
Assert.IsNotNull(cancellationToken);
var searchOptions = options ??
new SearchTaskOptions
{
MaxDegreeOfParallelism = Environment.ProcessorCount,
MaxHierarchyDepth = HierarchyDepth,
MaxQueueLength = int.MaxValue,
DequeueWaitTimeout = 5
};
var initialUrls = new Collection <string>();
for (var i = 0; i < InitialItemsCount; i++)
{
initialUrls.Add($"http://{i}");
}
await SearchTask.StartNew
(
initialUrls,
(url, token) =>
{
outputItems.Add(url);
Thread.Sleep(10);
var subItems = new Collection <string>();
for (var i = 0; i < SubItemsCount; i++)
{
subItems.Add($"{url}/{i}");
}
return(subItems);
},
cancellationToken,
searchOptions
);
}
public void SearchTaskFailsWithNullInitialItemCollectionTest()
{
Func <string, CancellationToken, IEnumerable <string> > action =
(url, token) => Enumerable.Empty <string>();
const IEnumerable <string> nullInilialItems = null;
try
{
SearchTask
.StartNew(nullInilialItems, action, CancellationToken.None)
.Wait(CancellationToken.None);
}
catch (AggregateException ex)
{
Assert.AreEqual(1, ex.InnerExceptions.Count);
Assert.IsTrue(ex.InnerExceptions.First() is ArgumentNullException);
}
}
