public async Task ThrowsOnSimultaneousInstanceUsage()
{
var sum = 0;
var lockObject = new object();
var f = new AsyncFor();
var first = f.RunFor(0, 10, async i =>
{
lock (lockObject)
{
sum += i;
}
await Task.Delay(100);
});
await Assert.ThrowsAsync <InvalidOperationException>(async() =>
{
await f.RunFor(0, 10, async i =>
{
lock (lockObject)
{
sum += i;
}
await Task.Delay(100);
});
});
}
public async Task ReportsProgressThroughInstanceProperties()
{
var f = new AsyncFor();
await f.RunFor(0, 6, i =>
{
Assert.False(f.IsCompleted);
Assert.False(f.IsIndeterminate);
Assert.True(f.Progress < 1);
});
Assert.True(f.IsCompleted);
Assert.False(f.IsIndeterminate);
Assert.Equal(1, f.Progress, precision: 1);
}
public async Task RunsForEveryNumberWithSynchronousDelegate_InstanceMethod()
{
var sum = 0;
var lockObject = new object();
var f = new AsyncFor();
await f.RunFor(0, 10, i =>
{
lock (lockObject)
{
sum += i;
}
});
Assert.Equal(55, sum);
}
public async Task ReportsProgressThroughInstanceEvent()
{
var myCustomMessage = $"Loading... ({Guid.NewGuid()})";
var progressEventArgs = new ConcurrentBag <ProgressReportedEventArgs>();
var completedCount = 0;
void OnProgressChanged(object sender, ProgressReportedEventArgs e)
{
progressEventArgs.Add(e);
Assert.Equal(myCustomMessage, e.Message);
Assert.False(e.IsIndeterminate);
Assert.True(e.Progress <= 1);
}
void OnCompleted(object sender, EventArgs e)
{
Interlocked.Increment(ref completedCount);
}
var f = new AsyncFor();
f.Message = myCustomMessage;
f.ProgressChanged += OnProgressChanged;
f.Completed += OnCompleted;
f.BatchSize = 2;
await f.RunFor(1, 10, async data =>
{
await Task.CompletedTask;
});
f.ProgressChanged -= OnProgressChanged;
f.Completed -= OnCompleted;
Assert.Equal(10, progressEventArgs.Count);
Assert.Equal(1, completedCount);
var distinctProgressPercentages = progressEventArgs.Select(e => e.Progress).Distinct().ToList();
Assert.InRange(distinctProgressPercentages.Count, 2, 10);
Assert.All(distinctProgressPercentages, p => Assert.InRange(p, 0, 1));
Assert.Contains(distinctProgressPercentages, p => p != 0 && p != 1);
}