public async Task FindNext_finds_valid_positions_in_document()
{
var phrase = "Lorem";
var document = new TextDocument(
@"Lorem ipsum abs xddd work or noe iavb Lorem back down weug
. This is Lorem or not Lor working and not.");
var indexes = new int[] { 0, 38, 70, 0 };
var currentIndex = 0;
var engine = new SearchEngine();
var sut = new FindViewModel(engine);
sut.ChangeDocument(document);
sut.SearchedText = phrase;
sut.OnCaretPositionChanged += (s, e) =>
{
Assert.Less(currentIndex, indexes.Length);
Assert.AreEqual(indexes[currentIndex], e.NewPosition);
currentIndex++;
};
for (int i = 0; i < indexes.Length; i++)
{
await sut.FindNext();
}
Assert.AreEqual(indexes.Length - 1, currentIndex);
}
public async Task Changing_parameters_triggers_search_cancelation()
{
var searchCancelled = false;
Task verifier = null;
var engine = new Mock <ISearchEngine>();
engine.Setup(x =>
x.FindInDocument(
It.IsAny <TextReader>(),
It.IsAny <string>(),
It.IsAny <SearchModeEnum>(),
It.IsAny <CancellationToken>(),
It.IsAny <Action <int> >()))
.Callback <TextReader, string, SearchModeEnum, CancellationToken, Action <int> >(async(a, b, v, ct, e) =>
{
verifier = new Task(async() =>
{
while (true)
{
await Task.Delay(100);
if (ct.IsCancellationRequested)
{
searchCancelled = true;
ct.ThrowIfCancellationRequested();
}
}
}, ct);
await Task.Run(() => verifier);
});
var sut = new FindViewModel(engine.Object);
sut.ChangeDocument(new TextDocument());
await sut.FindNext();
sut.IgnoreCase = !sut.IgnoreCase;
await Task.Delay(150);
Assert.NotNull(verifier);
Assert.IsTrue(verifier.IsCanceled);
Assert.IsTrue(searchCancelled);
}