public void ForEachAsync_throws_on_null_arguments()
{
var progressReporter = new ProgressReporter <int>(processingStatus => { });
var items = Enumerable.Range(1, 4).ToList();
Func <Task> action = () => progressReporter.ForEachAsync(null, item => Task.FromResult(true));
action.ShouldThrow <ArgumentNullException>();
action = () => progressReporter.ForEachAsync(items, null);
action.ShouldThrow <ArgumentNullException>();
}
public async Task ForEachAsync_reports_status_with_expected_ItemCount()
{
var items = Enumerable.Range(1, 5).ToList();
var progressReporter = new ProgressReporter <int>(processingStatus => { processingStatus.ItemCount.Should().Be(items.Count); });
await progressReporter.ForEachAsync(items, item => Task.FromResult(true));
}
public async Task ForEachAsync_reports_status_with_each_iteration()
{
var sum = 0;
var progressReporter = new ProgressReporter <int>(processingStatus => { sum += processingStatus.SourceItem; });
var items = Enumerable.Range(1, 5).ToList();
await progressReporter.ForEachAsync(items, item => Task.FromResult(true));
sum.Should().Be(15);
}
public async Task ForEachAsync_continues_after_an_exception()
{
var last = 0;
var items = Enumerable.Range(1, 5).ToList();
var progressReporter = new ProgressReporter <int>(processingStatus => { last = processingStatus.SourceItem; });
await progressReporter.ForEachAsync(
items,
item => { throw new Exception("Test"); });
last.Should().Be(5);
}
public async Task ForEachAsync_reports_status_with_expected_Exception()
{
var items = Enumerable.Range(1, 1).ToList();
var progressReporter = new ProgressReporter <int>(processingStatus => { processingStatus.Exception.Should().BeNull(); });
await progressReporter.ForEachAsync(items, item => Task.FromResult(true));
var expectedException = new Exception("Test");
progressReporter =
new ProgressReporter <int>(processingStatus => { processingStatus.Exception.Should().BeSameAs(expectedException); });
await progressReporter.ForEachAsync(items, item => { throw expectedException; });
}
public async Task ForEachAsync_reports_status_with_expected_PercentageComplete()
{
var items = Enumerable.Range(1, 5).ToList();
var progressReporter =
new ProgressReporter <int>(
processingStatus =>
{
processingStatus.PercentageComplete.Should()
.Be(Convert.ToDouble(processingStatus.ItemsProcessed) / processingStatus.ItemCount);
});
await progressReporter.ForEachAsync(items, item => Task.FromResult(true));
}
public async Task ForEachAsync_iterates_each_item()
{
var sum = 0;
var progressReporter = new ProgressReporter <int>(processingStatus => { });
var items = Enumerable.Range(1, 5).ToList();
await progressReporter.ForEachAsync(
items,
item =>
{
sum += item;
return(Task.FromResult(true));
});
sum.Should().Be(15);
}
