public void Can_Get_Notified_Of_Deltas()
{
IServiceCollection services = new ServiceCollection();
services.AddLogging();
var tokenSources = new List <CancellationTokenSource>();
// var cancellationToken = cancellationTokenSource.Token;
// var changeToken =
var changeTokenSource = new TestOptionsChangeTokenSource(() =>
{
var tokenSource = new CancellationTokenSource();
tokenSources.Add(tokenSource);
var changeToken = new CancellationChangeToken(tokenSource.Token);
return(changeToken);
});
services.AddSingleton <IOptionsChangeTokenSource <TestOptions> >(changeTokenSource);
int callCount = 0;
services.Configure <TestOptions>((a) =>
{
if (!tokenSources.Any(c => c.IsCancellationRequested))
{
a.Items.Add(new TestItemOptions()
{
Key = "A"
});
callCount = callCount + 1;
return;
}
else
{
a.Items.Add(new TestItemOptions()
{
Key = "B"
});
callCount = callCount + 1;
return;
}
});
services.AddOptionsItemChangeMonitor <TestOptions, TestItemOptions, string>((o) => o.Items);
var sp = services.BuildServiceProvider();
var itemMonitor = sp.GetRequiredService <IOptionsItemChangesMonitor <string, TestItemOptions> >();
var autoEvent = new AutoResetEvent(false);
itemMonitor.OnChange((changes) =>
{
Assert.Equal("Items", changes.MemberName);
var added = changes.Changes[ItemChangeType.Added];
Assert.Single(added);
var addedItem = added.First();
Assert.Equal("B", addedItem.Key);
var removed = changes.Changes[ItemChangeType.Removed];
Assert.Single(removed);
var removedItem = removed.First();
Assert.Equal("A", removedItem.Key);
var updated = changes.Changes[ItemChangeType.Modified];
Assert.Empty(updated);
autoEvent.Set();
});
var cts = tokenSources.First();
cts.Cancel();
autoEvent.WaitOne(10000);
}
public void Can_Get_Notified_Of_Deltas_Multiple_Lists()
{
IServiceCollection services = new ServiceCollection();
services.AddLogging();
var tokenSources = new List <CancellationTokenSource>();
// var cancellationToken = cancellationTokenSource.Token;
// var changeToken =
var changeTokenSource = new TestOptionsChangeTokenSource(() =>
{
var tokenSource = new CancellationTokenSource();
tokenSources.Add(tokenSource);
var changeToken = new CancellationChangeToken(tokenSource.Token);
return(changeToken);
});
services.AddSingleton <IOptionsChangeTokenSource <TestOptions> >(changeTokenSource);
var items = new List <TestItemOptions>
{
new TestItemOptions()
{
Key = "A"
}
};
var otherItems = new List <TestItemOptions>();
// otherItems.Add(new TestItemOptions() { Key = "A" });
services.Configure <TestOptions>((a) =>
{
if (items.Any())
{
a.Items.AddRange(items);
}
if (otherItems.Any())
{
a.OtherItems.AddRange(otherItems);
}
});
services.AddOptionsItemChangeMonitor <TestOptions, TestItemOptions, string>(
(o) => o.Items,
(o) => o.OtherItems);
var sp = services.BuildServiceProvider();
var itemMonitor = sp.GetRequiredService <IOptionsItemChangesMonitor <string, TestItemOptions> >();
// var autoEvent = new AutoResetEvent(false);
var autoEventAddedA = new AutoResetEvent(false);
var autoEventAddedOtherItem = new AutoResetEvent(false);
var callCount = 0;
itemMonitor.OnChange((changes) =>
{
var called = callCount;
if (called == 0)
{
Assert.Equal(nameof(TestOptions.Items), changes.MemberName);
callCount = 1;
var added = changes.Changes[ItemChangeType.Added];
Assert.Single(added);
var removed = changes.Changes[ItemChangeType.Removed];
Assert.Empty(removed);
var updated = changes.Changes[ItemChangeType.Modified];
Assert.Empty(updated);
autoEventAddedA.Set();
}
else if (called == 1)
{
Assert.Equal(nameof(TestOptions.OtherItems), changes.MemberName);
// Assert we added new item to OtherItems.
var added = changes.Changes[ItemChangeType.Added];
Assert.Single(added);
autoEventAddedOtherItem.Set();
}
// callCount = called + 1;
});
var cts = tokenSources.First();
// add an item key b
items.Add(new TestItemOptions()
{
Key = "B"
});
cts.Cancel();
Assert.True(autoEventAddedA.WaitOne(10000));
//Assert.True(autoEvent.WaitOne(0));
// autoEvent.Reset();
// callCount = 1;
var anotherCts = tokenSources[1];
// Add other item
otherItems.Add(new TestItemOptions()
{
Key = "B"
});
anotherCts.Cancel();
Assert.True(autoEventAddedOtherItem.WaitOne(10000));
//var waitHandleArray = new WaitHandle[] { autoEventAddedA, autoEventAddedOtherItem };
//Assert.True(WaitHandle.WaitAll(waitHandleArray, 10000));
}
